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International Conferences (Not Full-Reviewed)
Ryoma Akai and Masashi Konyo, "Enhancing Audiovisual Experience with Realistic Vibration Feedback Based on the Human Perceptual Intensity Generated from Sound Sources," The 30th International Display Workshops (IDW'23), pp. IDEMO-17, December. 2023.
Abstract: We demonstrate a novel realistic vibration feedback that can be used with a small LRA-type transducer to deliver enhanced audio-visual experiences. Realistic vibration stimuli are generated using Intensity Segment Modulation (ISM), a method that generates vibrotactile signals based on the perceptual intensity from acoustic signals, including high-frequency signals. ISM generated vibration waveforms can be presented via the iPhone's standard API, and can be synchronized with video. We also demonstrate a system that automatically generates a haptic experience using sound effects automatically generated from human movements.
BibTeX:
          @inproceedings{Akai_IDW23,
            author = {Akai, Ryoma and Konyo, Masashi},
            title = {Enhancing Audiovisual Experience with Realistic Vibration Feedback Based on the Human Perceptual Intensity Generated from Sound Sources},
            booktitle = {The 30th International Display Workshops (IDW'23)},
            year = {2023},
            pages = {IDEMO-17},
            doi = {}
          }
          
Masashi Konyo, "A Novel Vibration Feedback Method Based on the Human Perceptual Intensity to Deliver Realistic Audiovisual Experiences," International Display Workshops (IDW'23), vol. 30, pp. 1217-1220, December. 2023.
Abstract: This paper introduces a novel vibration feedback method that uses low-frequency vibration to reproduce a sensory experience that is strictly sensory equivalent to the original high-frequency vibration experience. This paper reports the overview of the proposed method and an application of haptic-enhanced video using iPhone and Core Haptics API for realistic audiovisual experiences.
BibTeX:
          @inproceedings{Konyo2023,
            author = {Masashi Konyo},
            title = {A Novel Vibration Feedback Method Based on the Human Perceptual Intensity to Deliver Realistic Audiovisual Experiences},
            booktitle = {International Display Workshops (IDW'23)},
            year = {2023},
            volume = {30},
            pages = {1217--1220},
            doi = {}
          }
          
Akio Ichijo, Natsumi Morita, Masashi Konyo, Kazuya Sase, Hikaru Nagano and Satoshi Tadokoro, "Cutaneous Sensory Representation of Surface Shape Using a High-resolution Suction Tactile Display through a Real-time Contact Simulation," 2023 IEEE World Haptics Conference, Hand-on Demos, July. 2023.
Abstract: Tactile receptors on the skin respond to this dis- tributed tactile information and could detect the magnitude and direction of reaction force to recognize object geometry. We focused on suction stimulation as a method to represent tactile information on the contact surface and developed a high- resolution suction tactile display. Real-time simulation of finger skin deformation and suction pressure control using a finite element model. In the demonstration, users can experience that the surface shape can be presented only by stimulating the cutaneous sensation.
BibTeX:
          @inproceedings{Ichijo2023-wh,
            author = {Ichijo, Akio and Morita, Natsumi and Konyo, Masashi and Sase, Kazuya and Nagano, Hikaru and Tadokoro, Satoshi},
            title = {Cutaneous Sensory Representation of Surface Shape Using a High-resolution Suction Tactile Display through a Real-time Contact Simulation},
            booktitle = {2023 IEEE World Haptics Conference, Hand-on Demos},
            year = {2023},
            url = {https://2023.worldhaptics.org/hands-on-demos/},
            doi = {}
          }
          
Toru Matsubara, Masamune Waga, Masashi Konyo and Satoshi Tadokoro, "Bidirectional Haptic Transmission through a Bracelet Device using a Sensory Equivalence Conversion of High-frequency Vibration," 2023 IEEE World Haptics Conference, Hand-on Demos, July. 2023.
Abstract: We have developed a bracelet device that can interactively transmit vibrotactile information in both directions. There are two key points. A sensory equivalence signal conversion method is applied to suppress feedback. The use of multiple trans- ducers and vibration sensors can reproduce spatial distribution.
BibTeX:
          @inproceedings{Matsubara2023-wh,
            author = {Matsubara, Toru and Waga, Masamune and Konyo, Masashi and Tadokoro, Satoshi},
            title = {Bidirectional Haptic Transmission through a Bracelet Device using a Sensory Equivalence Conversion of High-frequency Vibration},
            booktitle = {2023 IEEE World Haptics Conference, Hand-on Demos},
            year = {2023},
            url = {https://2023.worldhaptics.org/hands-on-demos/},
            doi = {}
          }
          
Gen Ohara, Daiki Kikuchi, Masashi Konyo and Satoshi Tadokoro, "Stereohaptic Vibration: Out-of-Body Localization of Virtual Vibration Source through Multiple Vibrotactile Stimuli on the Forearms," 2023 IEEE World Haptics Conference, Hand-on Demos, July. 2023.
Abstract: A phantom sensation (PS) can represent a virtual vibration source between multiple vibrotactile stimuli on the body surface. We propose “stereohaptic vibration,” a technology that extends the localization of PS to the three-dimensional space outside the body. This technology localizes a virtual vibration source by distributing the perceived amount of vibrotactile sensation to multiple vibrators, just as stereophonic sound. In the demonstration, users can feel the movement of a virtual vibration source around the arm, which gives the sensation of releasing an object from the body, like the magical experience of releasing a fire.
BibTeX:
          @inproceedings{Ohara2023-wh,
            author = {Ohara, Gen and Kikuchi, Daiki and Konyo, Masashi and Tadokoro, Satoshi},
            title = {Stereohaptic Vibration: Out-of-Body Localization of Virtual Vibration Source through Multiple Vibrotactile Stimuli on the Forearms},
            booktitle = {2023 IEEE World Haptics Conference, Hand-on Demos},
            year = {2023},
            url = {https://2023.worldhaptics.org/hands-on-demos/},
            doi = {}
          }
          
Masayuki Kajiura, Taku Hachisu, Toshihiro Takeshita, Yusuke Takei, Takeshi Kobayashi and Masashi Konyo, "Enhancement of Tactile Intensity for Thin Film Vibrators using Lever Mechanism," 2023 IEEE World Haptics Conference, Work-in-Progress Papers, July. 2023.
BibTeX:
          @inproceedings{Kajiura2023-wh,
            author = {Kajiura, Masayuki and Hachisu, Taku and Takeshita, Toshihiro and Takei, Yusuke and Kobayashi, Takeshi and Konyo, Masashi},
            title = {Enhancement of Tactile Intensity for Thin Film Vibrators using Lever Mechanism},
            booktitle = {2023 IEEE World Haptics Conference, Work-in-Progress Papers},
            year = {2023},
            url = {https://2023.worldhaptics.org/work-in-progress/},
            doi = {}
          }
          
Masamune Waga, Toru Matsubara, Masashi Konyo, Toshihiro Takeshita, Yusuke Takei, Takeshi Kobayashi and Satoshi Tadokoro, "Representing Pencil Hardness Using Ultra-Thin PZT-MEMS Vibrators by a Sensory Equivalence Conversion of High-Frequency Vibration," 2023 IEEE World Haptics Conference, Hand-on Demos, July. 2023.
Abstract: It is known that recording-based vibrotactile pre- sentation methods can express texture sensations for a digital stylus. We focus on high-frequency vibrations that produce exquisite tactile differences. This study aims to reproduce fine textures such as pencil hardness with film-type vibrators by a sensory equivalence conversion of high-frequency vibration. In the demonstration, you can feel the difference in pencil hardness by our methods.
BibTeX:
          @inproceedings{Waga2023-wh,
            author = {Waga, Masamune and Matsubara, Toru and Konyo, Masashi and Takeshita, Toshihiro and Takei, Yusuke and Kobayashi, Takeshi and Tadokoro, Satoshi},
            title = {Representing Pencil Hardness Using Ultra-Thin PZT-MEMS Vibrators by a Sensory Equivalence Conversion of High-Frequency Vibration},
            booktitle = {2023 IEEE World Haptics Conference, Hand-on Demos},
            year = {2023},
            url = {https://2023.worldhaptics.org/hands-on-demos/},
            doi = {}
          }
          
Yushi Nakaya, Yusuke Takahashi, Shuntaro Suzuki, Sota Nishiyama, Kenichi Higuchi, Masamune Waga, Toru Matsubara and Masashi Konyo, "Interactive Approach to AI-Based Source Separation of Vibrotactile Signals for Haptic Transmission," 2023 IEEE World Haptics Conference, Work-in-Progress Papers, July. 2023.
Abstract: No well-established method currently exists for re- motely transmitting vibrotactile signals in real time by sepa- rating signal components and emphasizing the information to be conveyed. Thus, we present an interactive signal adjustment approach that leverages AI-based signal decomposition and a dedicated interface to modulate intensity during playback of tactile sensations for each component.
BibTeX:
          @inproceedings{Nakaya2023-wh,
            author = {Nakaya, Yushi and Takahashi, Yusuke and Suzuki, Shuntaro and Nishiyama, Sota and Higuchi, Kenichi and Waga, Masamune and Matsubara, Toru and Konyo, Masashi},
            title = {Interactive Approach to AI-Based Source Separation of Vibrotactile Signals for Haptic Transmission},
            booktitle = {2023 IEEE World Haptics Conference, Work-in-Progress Papers},
            year = {2023},
            url = {https://2023.worldhaptics.org/work-in-progress/},
            doi = {}
          }
          
Toru Matsubara, Masamune Waga, Masashi Konyo, Kosuke Yamaguchi, Daiki Kikuchi and Satoshi Tadokoro, "Multi-channel Vibrotactile Transmission through a Bracelet Device based on the Intensity Segment Modulation," AsiaHaptics 2022, November. 2022. (AsiaHaptics 2022 Tokyo Satellite Best Demonstration Award Honorable Mention)
BibTeX:
          @inproceedings{Matsubara2022,
            author = {Matsubara, Toru and Waga, Masamune and Konyo, Masashi and Yamaguchi, Kosuke and Kikuchi, Daiki and Tadokoro, Satoshi},
            title = {Multi-channel Vibrotactile Transmission through a Bracelet Device based on the Intensity Segment Modulation},
            booktitle = {AsiaHaptics 2022},
            year = {2022},
            doi = {}
          }
          
Yuya Hoshi, Masashi Konyo and Satoshi Tadokoro, "Haptic Broadcast for Smartphones Using a High-Reality Vibration Conversion Method," AsiaHaptics 2022, November. 2022. (AsiaHaptics 2022 Tokyo Satellite Best Demonstration Award Gold Winner)
BibTeX:
          @inproceedings{Hoshi2022,
            author = {Hoshi, Yuya and Konyo, Masashi and Tadokoro, Satoshi},
            title = {Haptic Broadcast for Smartphones Using a High-Reality Vibration Conversion Method},
            booktitle = {AsiaHaptics 2022},
            year = {2022},
            doi = {}
          }
          
Natsumi Morita, Akio Ichijo, Masashi Konyo, Kazuya Sase, Hikaru Nagano and Satoshi Tadokoro, "A high-resolution suction tactile display integrated with a kinesthetic haptic display," AsiaHaptics 2022, November. 2022. (AsiaHaptics 2022 Tokyo Satellite Best Demonstration Award Silver Winner)
BibTeX:
          @inproceedings{Morita2022,
            author = {Morita, Natsumi and Ichijo, Akio and Konyo, Masashi and Sase, Kazuya and Nagano, Hikaru and Tadokoro, Satoshi},
            title = {A high-resolution suction tactile display integrated with a kinesthetic haptic display},
            booktitle = {AsiaHaptics 2022},
            year = {2022},
            doi = {}
          }
          
Gen Ohara, Toru Matsubara, Takuma Inagaki, Masashi Konyo and Satoshi Tadokoro, "Stereo Representation of External Environments with Multiple Vibration Stimuli on the Sole," AsiaHaptics 2022, November. 2022.
BibTeX:
          @inproceedings{Ohara2022,
            author = {Ohara, Gen and Matsubara, Toru and Inagaki, Takuma and Konyo, Masashi and Tadokoro, Satoshi},
            title = {Stereo Representation of External Environments with Multiple Vibration Stimuli on the Sole},
            booktitle = {AsiaHaptics 2022},
            year = {2022},
            doi = {}
          }
          
Yuya Hoshi, Masashi Konyo and Satoshi Tadokoro, "Haptic Enhanced Videos Using a High-Reality Vibration Conversion Method Available on Smartphones," 11th International Workshop on Haptic and Audio Interaction Design (HAID2022), August. 2022.
BibTeX:
          @inproceedings{Hoshi2022a,
            author = {Hoshi, Yuya and Konyo, Masashi and Tadokoro, Satoshi},
            title = {Haptic Enhanced Videos Using a High-Reality Vibration Conversion Method Available on Smartphones},
            booktitle = {11th International Workshop on Haptic and Audio Interaction Design (HAID2022)},
            year = {2022},
            doi = {}
          }
          
Hisato Ando, Yuichi Ambe, Yu Yamauchi, Yukihiro Maezawa, Masashi Konyo, Kenjiro Tadakuma, Hiroyuki Torikai, Shigenao Maruyama and Satoshi Tadokoro, "Novel Fire Extinguishing Method using Flying-Hose-Type Robot “Dragon Firefighter”," Proc. International Symposium on Fire Safety Science (IAFSS2020), April. 2021.
BibTeX:
          @inproceedings{Ando2021,
            author = {Ando, Hisato and Ambe, Yuichi and Yamauchi, Yu and Maezawa, Yukihiro and Konyo, Masashi and Tadakuma, Kenjiro and Torikai, Hiroyuki and Maruyama, Shigenao and Tadokoro, Satoshi},
            title = {Novel Fire Extinguishing Method using Flying-Hose-Type Robot “Dragon Firefighter”},
            booktitle = {Proc. International Symposium on Fire Safety Science (IAFSS2020)},
            year = {2021},
            doi = {}
          }
          
Masashi Konyo, "Buttock Skin Stretch Devices for Enhancing Driving Experience," International Display Workshops (IDW'19), no. 28, pp. 1664-1667, November. 2019. doi:10.36463/idw.2019.inp3-3. (IDW'19 Best Demonstration Award)
Abstract: A new concept of buttock skin stretch to induce the perception of shear forces while sitting is reported. The buttock skin stretch is suitable for a driving simulator to enhance the whole-body experiences such as the centrifugal force of the car and the inclination of the car body in driving.
BibTeX:
          @inproceedings{Konyo2019,
            author = {Masashi Konyo},
            title = {Buttock Skin Stretch Devices for Enhancing Driving Experience},
            booktitle = {International Display Workshops (IDW'19)},
            year = {2019},
            number = {28},
            pages = {1664--1667},
            doi = {10.36463/idw.2019.inp3-3}
          }
          
Daniel Gongora, Hikaru Nagano, Masashi Konyo and Satoshi Tadokoro, "Exciting but Comfortable: Applying Haptic Feedback to Stabilized Action-Cam Videos," Haptic Interaction : perception, devices and algorithms. AsiaHaptics2018. Lecture Notes in Electrical Engineering, vol. 535, 2018.
Abstract: Videos recorded with action cameras let viewers experience extreme activities from a safe environment. Unfortunately, these videos can be uncomfortable to watch due to intense camera shaking, and video stabilization limits the experience of motion. Here we propose using vibrotactile feedback to preserve the feeling of motion in first-person view videos that have been stabilized. First, we created vibrations from camera motion estimates for two vibrotactile actuators that emphasize the feelings of turns and jumps. Then, we conducted a pilot user study to assess viewers perception of motion in stabilized videos with and without vibrotactile feedback. We observed that motion vibrations added to a stable video did not preserve the motion intensity ratings of a raw video without vibrations. We also observed that motion vibrations had a significant effect on comfort and satisfaction, and that video stabilization did not have a signicant effect on the perceived synchronization between a stable video and vibrations generated from the original video.Videos recorded with action cameras let viewers experience extreme activities from a safe environment. Unfortunately, these videos can be uncomfortable to watch due to intense camera shaking, and video stabilization limits the experience of motion. Here we propose using vibrotactile feedback to preserve the feeling of motion in first-person view videos that have been stabilized. First, we created vibrations from camera motion estimates for two vibrotactile actuators that emphasize the feelings of turns and jumps. Then, we conducted a pilot user study to assess viewers perception of motion in stabilized videos with and without vibrotactile feedback. We observed that motion vibrations added to a stable video did not preserve the motion intensity ratings of a raw video without vibrations. We also observed that motion vibrations had a significant effect on comfort and satisfaction, and that video stabilization did not have a signicant effect on the perceived synchronization between a stable video and vibrations generated from the original video.
BibTeX:
@inproceedings{Daniel2018asiahapitcs,
  author = {Gongora, Daniel and Nagano, Hikaru and Konyo, Masashi and Tadokoro, Satoshi},
  editor = {Kajimoto, Hiroyuki and Lee, Dongjun and Kim, Sang-Youn and Konyo, Masashi and Kyung, Ki-Uk},
  title = {Exciting but Comfortable: Applying Haptic Feedback to Stabilized Action-Cam Videos},
  booktitle = {Haptic Interaction : perception, devices and algorithms. AsiaHaptics2018. Lecture Notes in Electrical Engineering},
  publisher = {Springer Singapore},
  year = {2018},
  volume = {535},
  doi = {}
}
Arata Horie, Akito Nomura, Kenjiro Tadakuma, Hikaru Nagano, Masashi Konyo and Satoshi Tadokoro, "Enhancing Haptic Experience in a Seat with Two-DoF Buttock Skin Stretch," Haptic Interaction : perception, devices and algorithms. AsiaHaptics2018. Lecture Notes in Electrical Engineering 535, 2018. (Asiahaptics 2018 Best Demonstration Award Gold Winner)
Abstract: We propose a buttock skin stretch device that adopts a two-degree-of-freedom horizontal movement mechanism. We have confirmed that an acceleration sensation of self-motion can be induced by a buttock skin stretch device with one degree of freedom. In this paper, we propose a two-degree-of-freedom buttock skin deforming device that extends the direction of skin deformation, which was only in the left and right directions, to the forward and backward directions. We focused on the range of motion, position accuracy, and driving speed, and evaluated the performance of the device as a buttock skin-deforming device.We propose a buttock skin stretch device that adopts a two-degree-of-freedom horizontal movement mechanism. We have confirmed that an acceleration sensation of self-motion can be induced by a buttock skin stretch device with one degree of freedom. In this paper, we propose a two-degree-of-freedom buttock skin deforming device that extends the direction of skin deformation, which was only in the left and right directions, to the forward and backward directions. We focused on the range of motion, position accuracy, and driving speed, and evaluated the performance of the device as a buttock skin-deforming device.
BibTeX:
@inproceedings{Horie2018asiahapitcs,
  author = {Horie, Arata and Nomura, Akito and Tadakuma, Kenjiro and Nagano, Hikaru and Konyo, Masashi and Tadokoro, Satoshi},
  editor = {Kajimoto, Hiroyuki and Lee, Dongjun and Kim, Sang-Youn and Konyo, Masashi and Kyung, Ki-Uk},
  title = {Enhancing Haptic Experience in a Seat with Two-DoF Buttock Skin Stretch},
  booktitle = {Haptic Interaction : perception, devices and algorithms. AsiaHaptics2018. Lecture Notes in Electrical Engineering 535},
  publisher = {Springer Singapore},
  year = {2018},
  doi = {}
}
Dennis Babu, Hikaru Nagano, Masashi Konyo, Ryunosuke Hamada and Satoshi Tadokoro, "Stable Haptic Feedback Generation during Mid Air Interactions Using Hidden Markov Model Based Motion Synthesis: Increasing and Stabilizing Motion Frame Rate," The 24th International Display Workshops (IDW'17), pp. HAPp1-1, December. 2017. (IDW'17 Outstanding Poster Paper Award)
BibTeX:
									@inproceedings{Babu_IDW17,
										author = {Babu, Dennis and Nagano, Hikaru and Konyo, Masashi and Hamada, Ryunosuke and Tadokoro, Satoshi},
										title = {Stable Haptic Feedback Generation during Mid Air Interactions Using Hidden Markov Model Based Motion Synthesis: Increasing and Stabilizing Motion Frame Rate},
										booktitle = {The 24th International Display Workshops (IDW'17)},
										year = {2017},
										pages = {HAPp1-1},
										doi = {}
									}
									
Daniel Gongora, Hikaru Nagano, Masashi Konyo and Satoshi Tadokoro, "Vibrotactile Representation of Camera Motion with Two Vibrators," The 24th International Display Workshops (IDW'17), December. 2017. (IDW'17 Outstanding Poster Paper Award)
BibTeX:
									@inproceedings{Gongora_IDW17,
										author = {Gongora, Daniel and Nagano, Hikaru and Konyo, Masashi and Tadokoro, Satoshi},
										title = {Vibrotactile Representation of Camera Motion with Two Vibrators},
										booktitle = {The 24th International Display Workshops (IDW'17)},
										year = {2017},
										doi = {}
									}
									
Masashi Konyo, "Haptic Feedback by Skin Pressure and Vibration for Assistive Technologies," International Symposium on Intelligent Functional Reconstruction of the Hand (IFRH), April. 2017.
Abstract: Human body movement requires haptic cues to accomplish the motion. It is reasonable to think that kinesthetic feedback is dominant because these sensory receptors are located at muscles to create body movement. We, however, focus on the contribution of cutaneous (tactile) sensation that can deliver kinesthetic information. Cutaneous receptors detect all information associated with skin deformations. In this sense, skin deformation could encode the body movement because these are linked together. For example, high-frequency vibrations at the fingerpad during hand exploration could reflect the normal force and the sliding velocity of the finger. For a tool manipulation with a grasping object, we could integrate the skin pressure distribution at the multiple fingerpads to perceive the external forces against the grasping tool. We introduce our haptic display system using 1) skin pressure device to reproduce force-like feeling during tool manipulations, and 2) skin vibration to represent friction force sensation without any physical forces. The proposed approaches will contribute to assistive technologies, especially in wearable and VR systems.
BibTeX:
									@conference{IFRH2017,
									  author = {Konyo, Masashi},
									  title = {Haptic Feedback by Skin Pressure and Vibration for Assistive Technologies},
									  booktitle = {International Symposium on Intelligent Functional Reconstruction of the Hand (IFRH)},
									  year = {2017},
									  doi = {}
									}
									
Dennis Babu, Hikaru Nagano, Masashi Konyo, Ryunosuke Hamada and Satoshi Tadokoro, "Stable Haptic Feedback Generation During Mid Air Interactions Using Hidden Markov Model Based Motion Synthesis," Lecture Notes in Electrical Engineering (AsiaHaptics 2016), vol. 432, pp. 225-231, . 2018. doi:10.1007/978-981-10-4157-0_39.
Abstract: textcopyright Springer Nature Singapore Pte Ltd. 2018. Generation of stable and realistic haptic feedback in 3 dimensional midair interaction systems has garnered significant research interests recently. But the limitations in the sensing technologies such as unstable tracking, range limitations and occlusions occurred during interactions, along with the motion recognition faults significantly distort motion based haptic feedback. In this paper, a Hidden Markov Model based motion element synthesis for stable haptic feedback generation is proposed. The subjective evaluation experimental results using the proposed model on 3 subjects during a zooming task have shown improvements in user perception of the gestures.
BibTeX:
									@incollection{Babu2018,
									  author = {Babu, Dennis and Nagano, Hikaru and Konyo, Masashi and Hamada, Ryunosuke and Tadokoro, Satoshi},
									  title = {Stable Haptic Feedback Generation During Mid Air Interactions Using Hidden Markov Model Based Motion Synthesis},
									  booktitle = {Lecture Notes in Electrical Engineering (AsiaHaptics 2016)},
									  year = {2018},
									  volume = {432},
									  pages = {225--231},
									  url = {http://link.springer.com/10.1007/978-981-10-4157-039},
									  doi = {10.1007/978-981-10-4157-0_39}
									}
									
Daniel Gongora, Hikaru Nagano, Masashi Konyo and Satoshi Tadokoro, "Experiments on Two-Handed Localization of Impact Vibrations," Lecture Notes in Electrical Engineering (AsiaHaptics 2016), vol. 432, pp. 33-39, . 2018. doi:10.1007/978-981-10-4157-0_6.
Abstract: textcopyright Springer Nature Singapore Pte Ltd. 2018. Impact vibration measurements were employed to determine which signal parameters serve as cues to localize impacts on a bar held with both hands. We considered three types of materials: Aluminum, polyoxymethylene (POM) and wood. Impact localization was better when the vibrations obtained from the wood bar were presented to the participants. We observed that to estimate the impact point participants relied primarily on amplitude and duration differences in the vibrations delivered to their hands. When short sine-wave bursts of varying amplitude and duration were used instead of impact vibrations, participants' capacity to localize the impacts improved. The goal of this submission is to further assess this observation with data obtained from the conference attendees.
BibTeX:
									@incollection{Gongora2018,
									  author = {Gongora, Daniel and Nagano, Hikaru and Konyo, Masashi and Tadokoro, Satoshi},
									  title = {Experiments on Two-Handed Localization of Impact Vibrations},
									  booktitle = {Lecture Notes in Electrical Engineering (AsiaHaptics 2016)},
									  year = {2018},
									  volume = {432},
									  pages = {33--39},
									  url = {http://link.springer.com/10.1007/978-981-10-4157-06},
									  doi = {10.1007/978-981-10-4157-0_6}
									}
									
Kosuke Higashi, Shogo Okamoto, Hikaru Nagano, Masashi Konyo and Yoji Yamada, "Perceived Hardness by Tapping: The Role of a Secondary Mode of Vibration," Lecture Notes in Electrical Engineering (AsiaHaptics 2016), vol. 432, pp. 27-32, . 2018. doi:10.1007/978-981-10-4157-0_5.
Abstract: textcopyright Springer Nature Singapore Pte Ltd. 2018. Humans can discriminate among the hardness of objects by tapping their surfaces. The damped natural vibration caused by tapping and its frequency are known to be the cue for the perception of hardness. This study is an investigation of the characteristics of this perception of hardness, as induced by vibration stimuli including multiple frequency components. We performed a comparative experiment using several damped vibration stimuli, which included either one or two frequency components, and investigated the significance of the secondary vibration mode and the change in its frequency. We found that the presence of the secondary mode significantly enhanced the perceived hardness; however, its frequency had a lesser effect on hardness perception.
BibTeX:
									@incollection{Higashi2018,
									  author = {Higashi, Kosuke and Okamoto, Shogo and Nagano, Hikaru and Konyo, Masashi and Yamada, Yoji},
									  title = {Perceived Hardness by Tapping: The Role of a Secondary Mode of Vibration},
									  booktitle = {Lecture Notes in Electrical Engineering (AsiaHaptics 2016)},
									  year = {2018},
									  volume = {432},
									  pages = {27--32},
									  url = {http://link.springer.com/10.1007/978-981-10-4157-05},
									  doi = {10.1007/978-981-10-4157-0_5}
									}
									
Shota Iizuka, Hikaru Nagano, Masashi Konyo and Satoshi Tadokoro, "Whole Hand Interaction with Multi-finger Movement-Based Vibrotactile Stimulation," Lecture Notes in Electrical Engineering (AsiaHaptics 2016), vol. 432, pp. 157-161, . 2018. doi:10.1007/978-981-10-4157-0_27.
Abstract: textcopyright Springer Nature Singapore Pte Ltd. 2018. Humans usually use their multiple fingers for several types of whole hand touch interaction such as stroking and grasping. During whole hand interaction, multiple fingers show respective velocity behaviors, which may lead to respective vibrating phenomena. For realistic haptic rendering of fine roughness of surfaces during multi-finger interaction, we proposed a multi-finger vibrotactile rendering method using velocities of multi-fingers. For each finger, a virtual fine rough surface is represented by a sinusoidal vibratory stimulus based on velocity of the corresponding finger and a touched material. We demonstrate the proposed method through two types of application with a multi-finger vibrotactile wearable display. In a first demonstration, a subject touches a virtual surface in a computational 3-D environment and perceives fine roughness of it. In a second demonstration, a subject touches a real surface and perceives augmented fine roughness of the surface on which vibrotactile stimulation is superimposed to modulate the fine roughness of the real surface.
BibTeX:
									@incollection{Iizuka2018,
									  author = {Iizuka, Shota and Nagano, Hikaru and Konyo, Masashi and Tadokoro, Satoshi},
									  title = {Whole Hand Interaction with Multi-finger Movement-Based Vibrotactile Stimulation},
									  booktitle = {Lecture Notes in Electrical Engineering (AsiaHaptics 2016)},
									  year = {2018},
									  volume = {432},
									  pages = {157--161},
									  url = {http://link.springer.com/10.1007/978-981-10-4157-027},
									  doi = {10.1007/978-981-10-4157-0_27}
									}
									
Shunya Sakata, Hikaru Nagano, Masashi Konyo and Satoshi Tadokoro, "Measurements of Vibration Propagation on a Forearm during Tennis Shot for Realistic Tactile Displays," The 6th international conference on advanced mechatronics (ICAM2015), vol. 2015, no. 6, pp. 203-204, dec. 2015.
BibTeX:
									@inproceedings{Sakata2015,
									  author = {Sakata, Shunya and Nagano, Hikaru and Konyo, Masashi and Tadokoro, Satoshi},
									  title = {Measurements of Vibration Propagation on a Forearm during Tennis Shot for Realistic Tactile Displays},
									  booktitle = {The 6th international conference on advanced mechatronics (ICAM2015)},
									  publisher = {The Japan Society of Mechanical Engineers},
									  year = {2015},
									  volume = {2015},
									  number = {6},
									  pages = {203-204},
									  url = {http://ci.nii.ac.jp/naid/110010043633/en/},
									  doi = {}
									}
									
Eri TAKANE, Kenjiro TADAKUMA, Seiji SAKIYAMA, Tomonari YAMAMOTO, O. H. N. O. Kazunori, Masashi KONYO and Satoshi TADOKORO, "Omnidirectional Curving Arm Mechanism with Passive Touch Detection," The 6th international conference on advanced mechatronics (ICAM2015), vol. 2015, no. 6, pp. 119-120, dec. 2015.
BibTeX:
									@inproceedings{Takane2015omni,
									  author = {TAKANE, Eri and TADAKUMA, Kenjiro and SAKIYAMA, Seiji and YAMAMOTO, Tomonari and OHNO, Kazunori and KONYO, Masashi and TADOKORO, Satoshi},
									  title = {Omnidirectional Curving Arm Mechanism with Passive Touch Detection},
									  booktitle = {The 6th international conference on advanced mechatronics (ICAM2015)},
									  publisher = {The Japan Society of Mechanical Engineers},
									  year = {2015},
									  volume = {2015},
									  number = {6},
									  pages = {119-120},
									  url = {http://ci.nii.ac.jp/naid/110010043589/en/},
									  doi = {}
									}
									
Tomonari Yamamoto, Masashi Konyo, Kenjiro Tadakuma and Satoshi Tadokoro, "Rolling Resistance between Roller and Flexible Tube of Pneumatic Hollow-shaft Actuator," The 6th international conference on advanced mechatronics (ICAM2015), vol. 2015, no. 6, pp. 269-270, dec. 2015.
BibTeX:
									@inproceedings{Yamamoto2015rolling,
									  author = {Yamamoto, Tomonari and Konyo, Masashi and Tadakuma, Kenjiro and Tadokoro, Satoshi},
									  title = {Rolling Resistance between Roller and Flexible Tube of Pneumatic Hollow-shaft Actuator},
									  booktitle = {The 6th international conference on advanced mechatronics (ICAM2015)},
									  publisher = {The Japan Society of Mechanical Engineers},
									  year = {2015},
									  volume = {2015},
									  number = {6},
									  pages = {269-270},
									  url = {http://ci.nii.ac.jp/naid/110010043668/en/},
									  doi = {}
									}
									
Seonghwan Kim, Hikaru Nagano, Masashi Konyo and Satoshi Tadokoro, "Haptic 3D canvas: haptic assistance of 3d writing and drawing with vibrotactile feedback for gesture interfaces," SIGGRAPH Asia 2015 Haptic Media And Contents Design on - SA '15, pp. 1-2, nov. 2015. doi:10.1145/2818384.2818400.
Abstract: This study proposes vibrotactile feedback methods to assist writing texts and drawing shapes in the air. The proposed methods demonstrated two types of tactile feedbacks depending on phases of writing. The first is a vibrotactile feedback like collision, which notifies start and end transitional times of drawing a character or a shape. The second displays a friction-induced vibration and keeps during writing, which is proportional to the velocity of writing finger movement.
BibTeX:
									@inproceedings{Kim2015,
									  author = {Kim, Seonghwan and Nagano, Hikaru and Konyo, Masashi and Tadokoro, Satoshi},
									  title = {Haptic 3D canvas: haptic assistance of 3d writing and drawing with vibrotactile feedback for gesture interfaces},
									  booktitle = {SIGGRAPH Asia 2015 Haptic Media And Contents Design on - SA '15},
									  publisher = {ACM Press},
									  year = {2015},
									  pages = {1--2},
									  url = {http://dl.acm.org/citation.cfm?doid=2818384.2818400},
									  doi = {10.1145/2818384.2818400}
									}
									
Masashi Konyo, "TAKO-Pen: a pen-type pseudo-haptic interface using multipoint suction pressures," SIGGRAPH Asia 2015 Haptic Media And Contents Design on - SA '15, pp. 1-2, nov. 2015. doi:10.1145/2818384.2818399.
Abstract: Human dexterity of manipulating tools is associated with haptic information achieved from multiple contact points of the skin with a grasping tool. For example, we can perceive external forces applied on a grasping tool based on skin pressure distribution. By understanding the nature of this mechanism, a new haptic interface to enhance our tool manipulation skills can be realized.
BibTeX:
									@inproceedings{konyo2015tako,
									  author = {Konyo, Masashi},
									  title = {TAKO-Pen: a pen-type pseudo-haptic interface using multipoint suction pressures},
									  booktitle = {SIGGRAPH Asia 2015 Haptic Media And Contents Design on - SA '15},
									  publisher = {ACM Press},
									  year = {2015},
									  pages = {1--2},
									  url = {http://dl.acm.org/citation.cfm?id=2818399},
									  doi = {10.1145/2818384.2818399}
									}
									
Seonghwan Kim, Masashi Konyo and Satoshi Tadokoro, "Haptic Assistance of Spatial Pointing with Simple Vibrotactile Feedback for Gesture Interfaces," Haptic Interaction, Perception, Devices and Applications (AsiaHaptics 2014), vol. 277, pp. 37-39, jun. 2015. doi:10.1007/978-4-431-55690-9_7.
Abstract: Gesture input with body motion has an operating limitation due to a lack of human precise positioning capability of the hand in the air. This study proposes simplified vibrotactile feedback methods to assist spatial pointing performances. The proposed methods demonstrated simplified tactile feedbacks, which were just non-directional vibratory intensity or a few vibration patterns.
BibTeX:
									@inproceedings{kim2015haptic,
									  author = {Kim, Seonghwan and Konyo, Masashi and Tadokoro, Satoshi},
									  title = {Haptic Assistance of Spatial Pointing with Simple Vibrotactile Feedback for Gesture Interfaces},
									  booktitle = {Haptic Interaction, Perception, Devices and Applications (AsiaHaptics 2014)},
									  publisher = {Springer Japan},
									  year = {2015},
									  volume = {277},
									  pages = {37--39},
									  url = {http://link.springer.com/10.1007/978-4-431-55690-97},
									  doi = {10.1007/978-4-431-55690-9_7}
									}
									
Daiki Maemori, Lope Ben Porquis, Masashi Konyo and Satoshi Tadokoro, "Pseudo-Haptic Interface Using Multipoint Suction Pressures and Vibrotactile Stimuli," Haptic Interaction, Perception, Devices and Applications (AsiaHaptics 2014), vol. 277, pp. 131-133, jun. 2015. doi:10.1007/978-4-431-55690-9_24.
Abstract: Dexterity for fine manipulation requires information from multiple skin contacts to detect the external forces applied on a tool. In this study, we developed a haptic interface to represent the external forces or stiffness of objects so that the pressure distributions at the contact pads can be controlled by using suction stimuli. The original interface had the drawback of being unable to represent high-frequency force sensations such as friction and collision because of air stimuli have large-scale characteristics. Thus, we integrated vibrotactile stimuli into the interface to represent high-frequency force sensations.
BibTeX:
									@inproceedings{maemori2015pseudo,
									  author = {Maemori, Daiki and Porquis, Lope Ben and Konyo, Masashi and Tadokoro, Satoshi},
									  editor = {Kajimoto, Hiroyuki and Ando, Hideyuki and Kyung, Ki-Uk},
									  title = {Pseudo-Haptic Interface Using Multipoint Suction Pressures and Vibrotactile Stimuli},
									  booktitle = {Haptic Interaction, Perception, Devices and Applications (AsiaHaptics 2014)},
									  publisher = {Springer Japan},
									  year = {2015},
									  volume = {277},
									  pages = {131--133},
									  url = {http://link.springer.com/10.1007/978-4-431-55690-924},
									  doi = {10.1007/978-4-431-55690-9_24}
									}
									
Robin Murphy, Masashi Konyo, Pedro Davalas, Gabe Knezek, Satoshi Tadokoro, Kazuna Sawata and Maarten Van Zomeren, "Preliminary observation of HRI in robot-assisted medical response," Proceedings of the 4th ACM/IEEE international conference on Human robot interaction - HRI '09, pp. 201, . 2009. doi:10.1145/1514095.1514135.
Abstract: This video captures human-robot interaction which occurred during an evaluation of a novel, snake-like search and rescue robot assisting with victim management. Most of the observations confirmed previous findings- That a 2:1 H-R ratio ratio is appropriate, Team coordination is enhanced by shared visual perception, and Poor interfaces continue to lead to incomplete coverage. However, the victims responded to the robot in two surprising ways: grabbing the robot and being concerned about its appearance.
BibTeX:
									@inproceedings{murphy2009preliminary,
									  author = {Murphy, Robin and Konyo, Masashi and Davalas, Pedro and Knezek, Gabe and Tadokoro, Satoshi and Sawata, Kazuna and Van Zomeren, Maarten},
									  title = {Preliminary observation of HRI in robot-assisted medical response},
									  booktitle = {Proceedings of the 4th ACM/IEEE international conference on Human robot interaction - HRI '09},
									  publisher = {ACM Press},
									  year = {2009},
									  pages = {201},
									  url = {http://portal.acm.org/citation.cfm?doid=1514095.1514135},
									  doi = {10.1145/1514095.1514135}
									}
									
Satoshi Tadokoro, Robin Murphy, Samuel Stover, William Brack, Masashi Konyo, Toshihiko Nishimura and Osachika Tanimoto, "Application of Active Scope Camera to forensic investigation of construction accident," 2009 IEEE Workshop on Advanced Robotics and its Social Impacts, pp. 47-50, nov. 2009. doi:10.1109/ARSO.2009.5587076.
Abstract: A rescue robot, Active Scope Camera was applied to forensic investigation of collapse of parking building under construction in Jacksonville, Florida, USA. It could enter 7 m deep into the rubble pile through gaps 3 cm wide and gathered image data, shape and direction of cracks, and section surface of concrete flakes, which was the world's first.
BibTeX:
									@inproceedings{Tadokoro2009,
									  author = {Tadokoro, Satoshi and Murphy, Robin and Stover, Samuel and Brack, William and Konyo, Masashi and Nishimura, Toshihiko and Tanimoto, Osachika},
									  title = {Application of Active Scope Camera to forensic investigation of construction accident},
									  booktitle = {2009 IEEE Workshop on Advanced Robotics and its Social Impacts},
									  publisher = {IEEE},
									  year = {2009},
									  pages = {47--50},
									  url = {http://ieeexplore.ieee.org/document/5587076/},
									  doi = {10.1109/ARSO.2009.5587076}
									}
									
Yusuke Hidaka, Yuta Shiokawa, Kaoru Tashiro, Takashi Maeno, Masashi Konyo and Takahiro Yamauchi, "Development of an elastic tactile sensor emulating human fingers for tele-presentation systems," 2009 IEEE Sensors, pp. 1919-1922, oct. 2009. doi:10.1109/ICSENS.2009.5398363.
Abstract: We have developed a tactile sensor for tactile tele-presentation systems by focusing on four features of the human finger considered to play an important role in texture perception; the existence of nails and bone, the multilayer structure of soft tissue, the distribution of mechanoreceptors, and the deployment of epidermal ridges. As a result, the developed sensor could detect roughness, softness and friction known to constitute texture perception of humans with precision equivalent to human. In addition, our sensor can be equipped with robot hands as it satisfies the requirements such as size equivalent to human finger, durability to withstand the wearing for repeated use, correspondence for scanning two dimensions.
BibTeX:
									@inproceedings{Hidaka2009,
									  author = {Hidaka, Yusuke and Shiokawa, Yuta and Tashiro, Kaoru and Maeno, Takashi and Konyo, Masashi and Yamauchi, Takahiro},
									  title = {Development of an elastic tactile sensor emulating human fingers for tele-presentation systems},
									  booktitle = {2009 IEEE Sensors},
									  publisher = {IEEE},
									  year = {2009},
									  pages = {1919--1922},
									  url = {http://ieeexplore.ieee.org/document/5398363/},
									  doi = {10.1109/ICSENS.2009.5398363}
									}
									
Yusuke Hidaka, Yuta Shiokawa, Kaoru Tashiro, Takashi Maeno, Masashi Konyo and Takahiro Yamauchi, "Development of an elastic tactile sensor emulating human fingers for tele-presentation systems," 2009 IEEE Sensors, pp. 1919-1922, oct. 2009. doi:10.1109/ICSENS.2009.5398363.
Abstract: We have developed a tactile sensor for tactile tele-presentation systems by focusing on four features of the human finger considered to play an important role in texture perception; the existence of nails and bone, the multilayer structure of soft tissue, the distribution of mechanoreceptors, and the deployment of epidermal ridges. As a result, the developed sensor could detect roughness, softness and friction known to constitute texture perception of humans with precision equivalent to human. In addition, our sensor can be equipped with robot hands as it satisfies the requirements such as size equivalent to human finger, durability to withstand the wearing for repeated use, correspondence for scanning two dimensions.
BibTeX:
									@inproceedings{Hidaka2009,
									  author = {Hidaka, Yusuke and Shiokawa, Yuta and Tashiro, Kaoru and Maeno, Takashi and Konyo, Masashi and Yamauchi, Takahiro},
									  title = {Development of an elastic tactile sensor emulating human fingers for tele-presentation systems},
									  booktitle = {2009 IEEE Sensors},
									  publisher = {IEEE},
									  year = {2009},
									  pages = {1919--1922},
									  url = {http://ieeexplore.ieee.org/document/5398363/},
									  doi = {10.1109/ICSENS.2009.5398363}
									}
									
Yuta Shiokawa, Atsushi Tazo, Masashi Konyo and Takashi Maeno, "Hybrid Display of Roughness, Softness and Friction Senses of Haptics," Proc. of the 18th International Conference of Artificial Reality and Tel-existence (ICAT), pp. 72-79, . 2008.
BibTeX:
									@inproceedings{Shiokawa2008,
									  author = {Shiokawa, Yuta and Tazo, Atsushi and Konyo, Masashi and Maeno, Takashi},
									  title = {Hybrid Display of Roughness, Softness and Friction Senses of Haptics},
									  booktitle = {Proc. of the 18th International Conference of Artificial Reality and Tel-existence (ICAT)},
									  year = {2008},
									  pages = {72--79},
									  doi = {}
									}
									
Kazuya Isaki, Akira Niitsuma, Masashi Konyo, Fumiaki Takemura and Satoshi Tadokoro, "Development of an Active Flexible Cable Driven by Ciliary Vibration Mechanism," Proc. 10th International Conference on New Actuators, vol. 219, pp. 219-222, . 2006.
BibTeX:
									@inproceedings{Isaki2006,
									  author = {Isaki, Kazuya and Niitsuma, Akira and Konyo, Masashi and Takemura, Fumiaki and Tadokoro, Satoshi},
									  title = {Development of an Active Flexible Cable Driven by Ciliary Vibration Mechanism},
									  booktitle = {Proc. 10th International Conference on New Actuators},
									  year = {2006},
									  volume = {219},
									  pages = {219--222},
									  url = {http://www.actuator.de/contents/pdf/programm/shorties/A66isakis.pdf},
									  doi = {}
									}
									
Daisuke Inoue, Masashi Konyo and Satoshi Tadokoro, "Distributed Tactile Sensors for Tracked Robots," 2006 5th IEEE Conference on Sensors, pp. 1309-1312, oct. 2006. doi:10.1109/ICSENS.2007.355870.
Abstract: A tracked wheel i.e. a crawler is one of suitable movement mechanisms to traverse extreme environments without getting stuck on obstacles. For improving their mobility, tactile sensing of the contact surface of the tracked wheel will help the motion control efficiently by detecting slips and stumbles. This research proposes a useful distributed tactile sensing system for the tracked wheel. To apply a number of tactile sensors to the tracked wheel, an electric wiring is a big problem because the wheel rotates continuously. The optical tactile sensing system proposed can estimate contact conditions of the surface in a non-contact way. When the tracked wheel gets deformed by friction, crawler shoes on the contact area incline against the tangential force. Our system can detect the inclination of the shoes by the pairs of a LED and a phototransistor attached on the inside chassis. We developed a special optical reflector, which responses only to its inclination not to its vertical movements, using a retroreflector and a microlouver film. The reflector showed enough performances for the proposed sensing system.
BibTeX:
									@inproceedings{inoue2006distributed,
									  author = {Inoue, Daisuke and Konyo, Masashi and Tadokoro, Satoshi},
									  title = {Distributed Tactile Sensors for Tracked Robots},
									  booktitle = {2006 5th IEEE Conference on Sensors},
									  publisher = {IEEE},
									  year = {2006},
									  pages = {1309--1312},
									  url = {http://ieeexplore.ieee.org/document/4178865/},
									  doi = {10.1109/ICSENS.2007.355870}
									}
									
Masashi Konyo, Takashi Maeno, Akinori Yoshida and Satoshi Tadokoro, "Roughness Sense Display Representing Temporal Frequency Changes of Tactile Information in Response to Hand Movements," First Joint Eurohaptics Conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems (WHC'05), pp. 609-610, mar. 2005. doi:10.1109/WHC.2005.113.
Abstract: We propose a hypothesis on mechanism of roughness perception based on temporal frequency changes of tactile information. Roughness sense can be considered as relative information to the hand velocity. Finite element analysis using human finger model showed that spatial information of the rough surface can be reflected in the temporal frequency changes at the position of tactile receptors. It should be important for roughness sense display to make a vibratory stimulation changing frequencies in response to the hand velocities.
BibTeX:
									@inproceedings{konyo2005roughness,
									  author = {Konyo, Masashi and Maeno, Takashi and Yoshida, Akinori and Tadokoro, Satoshi},
									  title = {Roughness Sense Display Representing Temporal Frequency Changes of Tactile Information in Response to Hand Movements},
									  booktitle = {First Joint Eurohaptics Conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems (WHC'05)},
									  publisher = {IEEE},
									  year = {2005},
									  pages = {609--610},
									  url = {http://ieeexplore.ieee.org/document/1407027/},
									  doi = {10.1109/WHC.2005.113}
									}
									
Masashi Konyo, Yoshiki Konishi, Satoshi Tadokoro and Takumi Kishima, "Development of velocity sensor using ionic polymer-metal composites," Proceedings of SPIE, vol. 5385, no. 1, pp. 307, jul. 2004. doi:10.1117/12.540266.
BibTeX:
									@inproceedings{Konyo2004,
									  author = {Konyo, Masashi and Konishi, Yoshiki and Tadokoro, Satoshi and Kishima, Takumi},
									  editor = {Bar-Cohen, Yoseph},
									  title = {Development of velocity sensor using ionic polymer-metal composites},
									  booktitle = {Proceedings of SPIE},
									  publisher = {Spie},
									  year = {2004},
									  volume = {5385},
									  number = {1},
									  pages = {307},
									  url = {http://proceedings.spiedigitallibrary.org/proceeding.aspx?doi=10.1117/12.540266},
									  doi = {10.1117/12.540266}
									}
									
Masashi Konyo, Satoshi Tadokoro, Toshi Takamori and Keisuke Oguro, "EAP application to artificial tactile feel display of virtual reality," Proceedings of SPIE Vol. 4329, pp. 389, jul. 2001. doi:10.1117/12.432671.
BibTeX:
									@inproceedings{Konyo2001,
									  author = {Konyo, Masashi and Tadokoro, Satoshi and Takamori, Toshi and Oguro, Keisuke},
									  editor = {Bar-Cohen, Yoseph},
									  title = {EAP application to artificial tactile feel display of virtual reality},
									  booktitle = {Proceedings of SPIE Vol. 4329},
									  year = {2001},
									  pages = {389},
									  url = {http://proceedings.spiedigitallibrary.org/proceeding.aspx?doi=10.1117/12.432671},
									  doi = {10.1117/12.432671}
									}
									
Books (in English)
Masashi Konyo, Yuichi Ambe, Hikaru Nagano, Yu Yamauchi, Satoshi Tadokoro, Yoshiaki Bando, Katsutoshi Itoyama, Hiroshi G. Okuno, Takayuki Okatani, Kanta Shimizu and Eisuke Ito, "ImPACT-TRC thin serpentine robot platform for urban search and rescue," Springer Tracts in Advanced Robotics, vol. 128, pp. 25-76, . 2019. doi:10.1007/978-3-030-05321-5_2.
Abstract: The Active Scope Camera has self-propelled mobility with a ciliary vibration drive mechanism for inspection tasks in narrow spaces but still lacks necessary mobility and sensing capabilities for search and rescue activities. The ImPACT-TRC program aims to improve the mobility of ASC drastically by applying a new air-jet actuation system to float ASC in the air and integrate multiple sensing systems, such as vision, auditory and tactile sensing functions, to enhance the searching ability. This paper reports an overview of the air-floating-type Active Scope Camera integrated with multiple sensory functions as a thin serpentine robot platform.
BibTeX:
          @incollection{KonyoBook2019,
            author = {Konyo, Masashi and Ambe, Yuichi and Nagano, Hikaru and Yamauchi, Yu and Tadokoro, Satoshi and Bando, Yoshiaki and Itoyama, Katsutoshi and Okuno, Hiroshi G. and Okatani, Takayuki and Shimizu, Kanta and Ito, Eisuke},
            title = {ImPACT-TRC thin serpentine robot platform for urban search and rescue},
            booktitle = {Springer Tracts in Advanced Robotics},
            publisher = {Springer Verlag},
            year = {2019},
            volume = {128},
            pages = {25--76},
            doi = {10.1007/978-3-030-05321-5_2}
          }
          
Hiroshi Yoshinada, Keita Kurashiki, Daisuke Kondo, Keiji Nagatani, Seiga Kiribayashi, Masataka Fuchida, Masayuki Tanaka, Atsushi Yamashita, Hajime Asama, Takashi Shibata, Masatoshi Okutomi, Yoko Sasaki, Yasuyoshi Yokokohji, Masashi Konyo, Hikaru Nagano, Fumio Kanehiro, Tomomichi Sugihara, Genya Ishigami, Shingo Ozaki, Koich Suzumori, Toru Ide, Akina Yamamoto, Kiyohiro Hioki, Takeo Oomichi, Satoshi Ashizawa, Kenjiro Tadakuma, Toshi Takamori, Tetsuya Kimura, Robin R. Murphy and Satoshi Tadokoro, "Dual-arm construction robot with remote-control function," Springer Tracts in Advanced Robotics, vol. 128, pp. 195-264, . 2019. doi:10.1007/978-3-030-05321-5_5.
Abstract: In disaster areas, operating heavy construction equipment remotely and autonomously is necessary, but conventional remote-controlled heavy equipment has problems such as insufficient operability, limited mobility on slopes and stairs, and low work efficiency because of difficult remote control. As part of the ImPACT-TRC Program, a group of Japanese researchers attempts to solve these problems by developing a construction robot for disaster relief tasks with a new mechanism and new control methods. This chapter presents the overview of construction robot and the details of main elemental technologies making up the robot. Section 5.1 describes the basic configuration of the robot and the teleoperation system. Section 5.2 is a tether powered drone which provides extra visual information. Sections 5.4 and 5.3 are force and tactile feedback for skillful teleoperation. Section 5.5 is visual information feedback which consists of an arbitrary viewpoint visualization system and a visible and LWIR camera system to observe surrounding of the robot in a dark night scene and/or a very foggy scene. These functions can dramatically increase construction equipment's capacity to deal with large-scale disasters and accidents.
BibTeX:
          @incollection{YoshinadaBook2019,
            author = {Yoshinada, Hiroshi and Kurashiki, Keita and Kondo, Daisuke and Nagatani, Keiji and Kiribayashi, Seiga and Fuchida, Masataka and Tanaka, Masayuki and Yamashita, Atsushi and Asama, Hajime and Shibata, Takashi and Okutomi, Masatoshi and Sasaki, Yoko and Yokokohji, Yasuyoshi and Konyo, Masashi and Nagano, Hikaru and Kanehiro, Fumio and Sugihara, Tomomichi and Ishigami, Genya and Ozaki, Shingo and Suzumori, Koich and Ide, Toru and Yamamoto, Akina and Hioki, Kiyohiro and Oomichi, Takeo and Ashizawa, Satoshi and Tadakuma, Kenjiro and Takamori, Toshi and Kimura, Tetsuya and Murphy, Robin R. and Tadokoro, Satoshi},
            title = {Dual-arm construction robot with remote-control function},
            booktitle = {Springer Tracts in Advanced Robotics},
            publisher = {Springer Verlag},
            year = {2019},
            volume = {128},
            pages = {195--264},
            doi = {10.1007/978-3-030-05321-5_5}
          }
          
Masashi Konyo, "Remote Transmission of Multiple Tactile Properties," Pervasive Haptics, pp. 285-303, apr. 2016. doi:10.1007/978-4-431-55772-2_19.
Abstract: To transmit realistic tactile textures remotely, we need to represent multiple tactile properties and to compensate communication delays. This chapter introduces a real-time remote transmission system that can deliver multiple tactile properties using a master-slave robot system. The author discusses required tactile properties to represent texture feelings and potential ways to transmit them through a robotic master-slave system in real-time. Three tactile properties are introduced: roughness, friction, and softness, which are associated with physical properties such as wavelengths, friction coefficients, and spring constants. Vibrotactile stimulation methods proposed by the authors can transmit the multiple tactile properties. Synchronization between hand exploration and tactile stimulation is also necessary to transmit natural texture feelings. The presented methods compensate time delays between the master and the slave by generating vibrotactile stimuli with local models on the master side. Tactile stimulations are synthesized in real time with the tactile properties transmitted from the slave side. Discrimination experiments of materials showed the feasibility of the proposed tactile transmission system.
BibTeX:
										@book{Konyo2016,
										  author = {Konyo, Masashi},
										  editor = {Kajimoto, Hiroyuki and Konyo, Masashi and Saga, Satoshi},
										  title = {Remote Transmission of Multiple Tactile Properties},
										  booktitle = {Pervasive Haptics},
										  publisher = {Springer Japan},
										  year = {2016},
										  pages = {285--303},
										  url = {http://link.springer.com/10.1007/978-4-431-55772-219},
										  doi = {10.1007/978-4-431-55772-2_19}
										}
										
Hiroyuki Kajimoto, Masashi Konyo and Satoshi Saga, "Pervasive Haptics," Pervasive Haptics: Science, Design, and Application, apr. 2016. doi:10.1007/978-4-431-55772-2.
Abstract: This book examines the state of the art in diverse areas of haptics (touch)-related research, including the psychophysics and neurophysiology of haptics, development of haptics displays and sensors, and applications to a wide variety of fields such as industry, education, therapy, medicine, and welfare for the visually impaired. It also discusses the potential of future haptics interaction, such as haptics for emotional control and remote haptics communication. The book offers a valuable resource not only for haptics and human interface researchers, but also for developers and designers at manufacturing corporations and in the entertainment industries.
BibTeX:
										@book{Kajimoto2016,
										  author = {Kajimoto, Hiroyuki and Konyo, Masashi and Saga, Satoshi},
										  editor = {Kajimoto, Hiroyuki and Saga, Satoshi and Konyo, Masashi},
										  title = {Pervasive Haptics},
										  booktitle = {Pervasive Haptics: Science, Design, and Application},
										  publisher = {Springer Japan},
										  year = {2016},
										  url = {http://link.springer.com/10.1007/978-4-431-55772-2},
										  doi = {10.1007/978-4-431-55772-2}
										}
										
Masashi Konyo and Satoshi Tadokoro, "Actuation of Long Flexible Cables Using Ciliary Vibration Drive," Next-Generation Actuators Leading Breakthroughs, pp. 177-188, . 2010. doi:10.1007/978-1-84882-991-6_16.
Abstract: Long flexible cables have difficulty in handling their movement with just pulling or pushing. We proposed an actuation mechanism for long flexible ca- bles to get active mobility using a ciliary vibration drive. The ciliary vibration drive generates driving force on a cable by vibrating inclined thin sting or wire cilia. Ciliary bending and recovery movement during vibration makes cilia tips stick and slip rapidly and generates distributed driving force on the cable. We made observation and modeling of physical phenomena of cilia movement to de- sign the optimal ciliary vibration drive. We also determined optimal parameters such as material, a diameter, density and an inclination angle of cilia, and interval of vibration motors on a trial basis. We also developed an active scope camera which was installed the proposed mechanism. A prototype of the active scope camera showed good performance in practical rescue activities. A prototype of a scope camera 8 m long crawls at a maximum speed of 47 mm/s, climbs slopes of 20 deg, surmounts obstacles 200mm high, follows walls, and turns on floors. Ex- periments at Collapsed House Simulation Facility demonstrate its practical advan- tage in rubble pile.
BibTeX:
										@book{Konyo2010,
										  author = {Konyo, Masashi and Tadokoro, Satoshi},
										  editor = {Toshiro, Higuchi and Koichi, Suzumori and Satoshi, Tadokoro},
										  title = {Actuation of Long Flexible Cables Using Ciliary Vibration Drive},
										  booktitle = {Next-Generation Actuators Leading Breakthroughs},
										  publisher = {Springer London},
										  year = {2010},
										  pages = {177--188},
										  url = {http://link.springer.com/10.1007/978-1-84882-991-616},
										  doi = {10.1007/978-1-84882-991-6_16}
										}
										
Masashi Konyo and Satoshi Tadokoro, "Biomedical Applications of Electroactive Polymer Actuators," Biomedical Applications of Electroactive Polymer Actuators, pp. 161-174, apr. 2009. doi:10.1002/9780470744697.
BibTeX:
										@book{Konyo2009,
										  author = {Konyo, Masashi and Tadokoro, Satoshi},
										  editor = {Carpi, Federico and Smela, Elisabeth},
										  title = {Biomedical Applications of Electroactive Polymer Actuators},
										  booktitle = {Biomedical Applications of Electroactive Polymer Actuators},
										  publisher = {John Wiley & Sons, Ltd},
										  year = {2009},
										  pages = {161--174},
										  url = {http://doi.wiley.com/10.1002/9780470744697},
										  doi = {10.1002/9780470744697}
										}
										
Masashi Konyo, Satoshi Tadokoro and Kinji Asaka, "Applications of Ionic Polymer-Metal Composites: Multiple-DOF Devices Using Soft Actuators and Sensors," Electroactive Polymers for Robotic Applications, pp. 227-262, . 2007. doi:10.1007/978-1-84628-372-7_9.
BibTeX:
										@book{konyo2007applications,
										  author = {Konyo, Masashi and Tadokoro, Satoshi and Asaka, Kinji},
										  editor = {Kim, Kwang J. and Tadokoro, Satoshi},
										  title = {Applications of Ionic Polymer-Metal Composites: Multiple-DOF Devices Using Soft Actuators and Sensors},
										  booktitle = {Electroactive Polymers for Robotic Applications},
										  publisher = {Springer London},
										  year = {2007},
										  pages = {227--262},
										  url = {http://link.springer.com/10.1007/978-1-84628-372-79},
										  doi = {10.1007/978-1-84628-372-7_9}
										}
										
Satoshi Tadokoro, Masashi Konyo and Keisuke Oguro, "Modeling IPMC for Design of Actuation Mechanisms," Electroactive Polymer (EAP) Actuators as Artificial Muscles: Reality, Potential, and Challenges, Second Edition, pp. 385-427, mar. 2004. doi:10.1117/3.547465.ch13.
BibTeX:
										@book{Tadokoro2004,
										  author = {Tadokoro, Satoshi and Konyo, Masashi and Oguro, Keisuke},
										  editor = {Bar-Cohen, Yoseph},
										  title = {Modeling IPMC for Design of Actuation Mechanisms},
										  booktitle = {Electroactive Polymer (EAP) Actuators as Artificial Muscles: Reality, Potential, and Challenges, Second Edition},
										  publisher = {SPIE},
										  year = {2004},
										  pages = {385--427},
										  url = {http://ebooks.spiedigitallibrary.org/content.aspx?doi=10.1117/3.547465.ch13},
										  doi = {10.1117/3.547465.ch13}
										}
										
The full publication list including Japanese books is available here.


Invited Talks (International Events)

Masashi Konyo, "A Novel Vibration Feedback Method Based on the Human Perceptual Intensity to Deliver Realistic Audiovisual Experiences," The 30th International Display Workshops (IDW'23), INP-WS, Niigata, Dec. 8, 2023.
Masashi Konyo, "Buttock Skin Stretch Devices for Enhancing Driving Experience," The 26th International Display Workshops (IDW'19), INP-WS, Sapporo, Nov. 28, 2019.
Masashi Konyo, "Disaster Response Robots and Remote Technologies," Session: Toward Restoration after Fukushima Daiichi Nuclear Accident, World BOSAI Forum/IDRC 2019, Sendai, Nov. 12, 2019.
Masashi Konyo, "ImPACT-TRC: Thin Serpentine Robot and Frying Firefighter Robot," DRC-IRS International Workshop on Disaster Response Robot Technology: Test Field and Methodology, Pohang, June 17, 2019.
Masashi Konyo, "ImPACT-TRC: Thin Serpentine Robot Platform for Urban Search and Rescue," IROS2018 Workshop: ImPACT Tough Robotics Challenge: A National Project of Disaster Robotics Aiming at Social Innovation in Safety and Security, Madrid, Oct. 5, 2018.
Masashi Konyo, "Vibration Feedback for Representing Haptic Interaction," The 24th International Display Workshops (IDW'17) Topical Session: Haptics Technologies, Sendai, Dec. 8, 2017.
Masashi Konyo, "Haptic Display by Skin Deformation," AsiaHaptics 2016 Workshop: Design of Weight: How do we feel force, and how can we apply it to product design?, Kashiwanoha, Nov. 29, 2016.
Masashi Konyo, "Active Topics and Trends in Haptics," IEEE Digital Senses Initiative 3rd Workshop, San Jose, Dec 1, 2015.
Masashi Konyo, "Creating Haptic Feedback by Motion-oriented Skin Vibration for Assistive Technologies," IEEE International Conference on Robotics and Automation (ICRA2014), Workshop on Human Modeling and Control for Assistive Technologies, June 1, 2014.
Masashi Konyo, "Haptics Everywhere: Generating Haptic Feedbacks with Motion-Oriented Skin Vibrations," Common CoTeSys / CREATE Workshop, Technische Universitat Munchen, 5 October, 2012.
Masashi Konyo, Satoshi Tadokoro, "Robotic Applications of Ionic Polymer-Metal Composites: Multiple-DOF Devices Using Soft Actuators and Sensors," IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS2004), Tutorial on Electro-Active Polymers for Use in Robotics, Sendai, Sept.28-Oct.2, 2004.
Masashi Konyo, Satoshi Tadokoro, "Wearable Tactile Display in Response to Human Active Touch," IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS2004), Workshop on Touch and Haptics, Sendai, Sept.28-Oct.2, 2004.
The full invited talk list including seminors in Japan is available here.


Awards (Selected)

AsiaHaptics2022 Tokyo Satellite Best Demonstration Award Gold Winner (Nov. 2022)
For "Haptic Broadcast for Smartphones Using a High-Reality Vibration Conversion Method," presented in AsiaHaptics 2023 Tokyo Satellite.
AsiaHaptics2022 Tokyo Satellite Best Demonstration Award Silver Winner (Nov. 2022)
For "A high-resolution suction tactile display integrated with a kinesthetic haptic display," presented in AsiaHaptics 2023 Tokyo Satellite.
AsiaHaptics2022 Tokyo Satellite Best Demonstration Award Honorable Mentions (Nov. 2022)
For "Multi-channel Vibrotactile Transmission through a Bracelet Device based on the Intensity Segment Modulation," presented in AsiaHaptics 2023 Tokyo Satellite.
IDW'19 Best Demonstration Award (Nov. 2019)
For "Buttock Skin Stretch Devices for Enhancing Driving Experience," presented in The 26th International Display Workshops (IDW'19).
AsiaHaptics 2018 Best Demonstration Award Gold Winner (Nov. 2018)
For "Enhancing Haptic Experience in a Seat with Two-DoF Buttock Skin Stretch," presented in AsiaHaptics 2018. [link]
IEEE/ASME AIM2018 Best Paper Award (Jul. 2018)
For "A Robotic Thruster That Can Handle Hairy Flexible Cable of Serpentine Robots for Disaster Inspection," presented in AIM2018.[link]
Eurohaptics2018 Best Poster Award (June 2018)
"A Pilot Study: Introduction of Time-domain Segment to Intensity-based Perception Model of High-frequency Vibration," presented in Eurohaptics 2018 [link]
Advanced Robotics Best Paper Award (Sept. 2016)
For "Posture estimation of hose-shaped robot by using active microphone array," Advanced Robotics, vol. 29, no. 1, pp. 35-49, jan. 2015. [link]
SSRR2015 Most Innovative Paper Award (Oct. 2015)
For "Human-voice enhancement based on online RPCA for a hose-shaped rescue robot with a microphone array," 2015 IEEE International Symposium on Safety, Security, and Rescue Robotics (SSRR), pp. 1-6, oct. 2015. [link]
SSRR2015 People's Choice Demo Award (Oct. 2015)
For "Human-Voice Enhancement based on Online RPCA for a Hose-shaped Rescue Robot with a Microphone Array" demonstrated at SSRR2015.
The Young Scientists Prize, the Commendation for Science and Technology by MEXT (Apr. 2015)
For the contributions on the studies of Pseudo-haptic display methods based on vibrotactile stimuli.
Kisoi Motohiro Award (Jan. 2015)
For the contribution on the research and development of Active Scope Camera. The Kisoi Motohiro Awards are organized by International Rescue System Institute.
IROS2014 Best Paper Award Finalist (Sept. 2014)
For "Remote vertical exploration by Active Scope Camera into collapsed buildings," 2014 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), pp. 1882-1888, sep. 2014. [link]
IEEE Haptics Symposium 2014 Best Demonstration Award (Feb. 2014)
For "Presenting Virtual Stiffness by Modulating the Perceived Force Profile with Suction Pressure" demonstrated at Haptics Symposium 2014. [link]
Best Poster Award of WorldHaptics 2013 (Apr. 2013)
For "Sharp tactile sensation using superposition of vibrotactile stimuli in different phases," 2013 IEEE World Haptics Conference (WHC), pp. 235-240, apr. 2013. [link]
Journal of Robotics and Mechatoronics Best Paper Award (2010)
For "Ciliary Vibration Drive Mechanism for Active Scope Cameras," Journal of Robotics and Mechatronics, vol. 20, no. 3, pp. 490-499, jun. 2008. [link]
Award for The Best Hands on Demo at the EuroHaptics 2008 Meeting (Jun. 2008)
For "Alternative Display of Friction Represented by Tactile Stimulation without Tangential Force" demonstarted at EuroHaptics 2008. [link]
Best Paper Award of Transactions of the Virtual Reality Society of Japan (Jul. 2007)
"Reflective Grasp Force Control of Humans Induced by Distributed Vibration Stimuli on Finger Skin with ICPF Actuators [in Japanese]," Transactions of the Virtual Reality Society of Japan, vol. 11, no. 1, pp. 3-10, mar. 2006. [link]
The Best Poster Award of the World Haptics Conference 2007 (Sept. 2007)
"Roughness Feeling Telepresence System with Communication Time-Delay," Second Joint EuroHaptics Conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems (WHC'07), pp. 595-596, mar. 2007. [link]
Best Paper Award of Transactions of the Virtual Reality Society of Japan (Spet. 2002)
"Tactile Feeling Display for Touch of Cloth Using Soft High Polymer Gel Actuators [in Japanese]," Transactions of the Virtual Reality Society of Japan, vol. 6, no. 4, pp. 323-328, dec. 2001. [link]
The full award list including Japanese is available here.