Shirai, Ryo(Graduate School of Informatics, Department of Informatics) | Activity Database on Education and Research, Kyoto University

Shirai, Ryo

Graduate School of Informatics, Department of Informatics Assistant Professor

Last Updated :2025/06/30

Basic Information

Faculty

工学部

Academic Degree

修士（情報科学）(大阪大学)

博士（情報科学）(大阪大学)

Academic Resume (Graduate Schools)

大阪大学, 大学院情報科学研究科情報システム工学専攻博士後期課程, 修了

大阪大学, 大学院情報科学研究科情報システム工学専攻博士前期課程, 修了

Academic Resume (Undergraduate School/Majors)

大阪大学, 工学部電子情報工学科, 卒業

High School

High School
洛星高等学校

Research History

From Apr. 2021, To Present
Kyoto University, Graduate School of Informatics Department of Communications and Computer Engineering, Assistant Professor

From Apr. 2019, To Mar. 2021
Japan Society for the Promotion of Science, Research Fellow

Language of Instruction

Japanese

English

ID,URL

J-Global ID
202101000365220836
Researcher number
70910834

researchmap URL

https://researchmap.jp/ryoshirai

Last Updated :2025/06/30

Research

Papers

Localization of Embedded Sensors in Reinforced Concrete via Time-Series Magnetic Field Sensing and Maximum Likelihood Estimation
Ryosuke Sada; Toshihisa Tanaka; Hisafumi Asaue; Toomoki Shiotani; Masanori Hashimoto; Ryo Shirai
IEEE Sensors Letters, Oct. 2025, Peer-reviewed, Last author, Corresponding author

TACHI: Tests as a Chip Identifier
Ryosuke Sada; Ryo Shirai; Michihiro Shintani; Takashi Sato
IEEE International Conference on Microelectronic Test Structures (ICMTS), Mar. 2025, Peer-reviewed

A Current Chopper-Assisted Magnetic Field-Based Backscatter Communication Method With WPT Overcoming Ultralow Coupling Coefficients
Ryota Fukugasako; Hisafumi Asaue; Tomoki Shiotani; Masanori Hashimoto; Ryo Shirai
IEEE Sensors Journal, 15 May 2025, Peer-reviewed, Last author, Corresponding author

Development of Tiny Wireless Position Tracker Enabling Real-Time Intuitive 3D Modeling
Yuki Maegawa; Masanori Hashimoto; Ryo Shirai
SIGGRAPH Asia 2024 Posters, 02 Dec. 2024, Peer-reviewed, Last author, Corresponding author

Analytical Equivalent Circuit Extraction of Foreign Metal Objects in WPT Systems
Ryo Shirai; Goro Nakao; Masanori Hashimoto
IEEE Access, Nov. 2024, Peer-reviewed, Lead author
Access this paper :

A Proof-Of-Concept Prototyping of Reservoir Computing with Quantum Dots and an Image Sensor for Image Classification
Takuto Matsumoto; Ryo Shirai; Masanori Hashimoto
IEEE International Conference on Rebooting Computing (ICRC), Dec. 2023, Peer-reviewed

Toward Instant 3D Modeling: Highly Parallelizable Shape Reproduction Method for Soft Object Containing Numerous Tiny Position Trackers
Minoru Harimaya; Ryo Shirai; Masanori Hashimoto
28th International Conference on Intelligent User Interfaces, 27 Mar. 2023, Peer-reviewed

DC Magnetic Field-Based Analytical Localization Robust to Known Stationary Magnetic Object
Toshihisa Tanaka; Ryo Shirai; Masanori Hashimoto
2022 IEEE 65th International Midwest Symposium on Circuits and Systems (MWSCAS), 07 Aug. 2022, Peer-reviewed

Society6.0を目指した，IoT機器のパーベイシブ化に必要な要素
白井僚
電子情報通信学会ソサイエティ大会講演論文集, Aug. 2022, Invited, Lead author, Corresponding author

Shape-Flexible Underwater Display System with Wirelessly Powered and Controlled Smart LEDs
Ryo Shirai; Masanori Hashimoto
27th International Conference on Intelligent User Interfaces (IUI ’22 Companion), Mar. 2022, Peer-reviewed, Lead author

Submarine LED: Wirelessly powered underwater display controlling its buoyancy
Ryo Shirai; Masanori Hashimoto
SIGGRAPH Asia 2021 Posters, 14 Dec. 2021, Peer-reviewed, Lead author

CoiLED Display: Striped Flexible Displays Capable of Wrapping Around Objects
Saya Suzuanaga; Kazuyuki Fujita; Ryo Shirai; Yuichi Itoh
日本バーチャルリアリティ学会論文誌, Dec. 2021, Peer-reviewed

Make it Trackable: An Instant Magnetic Tracking System With Coil-Free Tiny Trackers
Ryo Shirai; Yuichi Itoh; Masanori Hashimoto
IEEE Access, 2021, Peer-reviewed, Lead author

StickyTouch：局所的粘着性を制御可能なタッチディスプレイ
伊藤雄一; 石原好貴; 白井僚; 藤田和之; 高嶋和毅; 尾上孝雄
日本バーチャルリアリティ学会論文誌, 25 Dec. 2020, Peer-reviewed

CoiLED Display: Make Everything Displayable
Saya Suzunaga; Yuichi Itoh; Kazuyuki Fujita; Ryo Shirai; Takao Onoye
SIGGRAPH Asia 2020 Emerging Technologies, 04 Dec. 2020, Peer-reviewed

CoiLED Display: ストライプ状LED群を用いたフレキシブルディスプレイ
鈴永紗也; 藤田和之; 白井僚; 伊藤雄一; 尾上孝雄
ヒューマンインタフェース学会研究報告集, Oct. 2020

Position and Posture Estimation of Capsule Endoscopy with a Single Wearable Coil Toward Daily Life Diagnosis
Ryohei Shimizu; Ryo Shirai; Masanori Hashimoto
2020 IEEE 63rd International Midwest Symposium on Circuits and Systems (MWSCAS), Aug. 2020, Peer-reviewed

DC Magnetic Field Based 3D Localization With Single Anchor Coil
Ryo Shirai; Masanori Hashimoto
IEEE Sensors Journal, 01 Apr. 2020, Peer-reviewed, Lead author

StickyTouch: A Tactile Display with Changeable Adhesive Distribution
Yoshitaka Ishihara; Yuichi Itoh; Ryo Shirai; Kazuyuki Fujita; Kazuki Takashima; Takao Onoye
2020 IEEE Haptics Symposium (HAPTICS), Mar. 2020, Peer-reviewed

StickyTouch: An Adhesion Changeable Surface
Yoshitaka Ishihara; Ryo Shirai; Yuichi Itoh; Kazuyuki Fujita; Takao Onoye
SIGGRAPH Asia 2019 Emerging Technologies, 17 Nov. 2019, Peer-reviewed

Coverage-scalable instant tabletop positioning system with self-localizable anchor nodes
Pei Hao Chen; Ryo Shirai; Masanori Hashimoto
Proceedings of the 24th International Conference on Intelligent User Interfaces: Companion, 16 Mar. 2019, Peer-reviewed

単一アンカーコイルによる直流磁界を用いた位置推定手法の検討
白井僚; 陳沛豪; 清水綾平; 橋本昌宜
電子情報通信学会技術研究報告; 信学技報, Dec. 2018

地磁気センサアレイの時系列データを用いた動き予測の検討
清水綾平; 白井僚; 陳沛豪; 橋本昌宜
電子情報通信学会技術研究報告；信学技報, Dec. 2018

OptRod: Constructing Interactive Surface with Multiple Functions and Flexible Shape by Projected Image
Ryo Shirai; Yuichi Itoh; Shori Ueda; Takao Onoye
The 31st Annual ACM Symposium on User Interface Software and Technology Adjunct Proceedings, 11 Oct. 2018, Peer-reviewed, Lead author

A Multifunctional Sensor Node Sharing Coils in Wireless Power Supply, Wireless Communication and Distance Sensing Modes
Ryo Shirai; Tetsuya Hirose; Masanori Hashimoto
2018 16th IEEE International New Circuits and Systems Conference (NEWCAS), Jun. 2018, Peer-reviewed, Lead author

42-2: Invited Paper: OptRod: A Shape-Free and Multi-Functional Display System Operated by Projected Images
Yuichi Itoh; Ryo Shirai; Shori Ueda; Taichi Fukamachi; Mayu Yamashita; Takao Onoye
SID Symposium Digest of Technical Papers, May 2018, Invited

近傍界磁界通信・電界測距共用mm^3級アンテナの実装と評価
白井僚; 河野仁; 廣瀬哲也; 橋本昌宜
電子情報通信学会技術研究報告; 信学技報, Dec. 2017, Lead author

IoTノード向けアンテナ組込型小体積高効率トランスミッタの開発
白井僚; 廣瀬哲也; 橋本昌宜
電子情報通信学会技術研究報告; 信学技報, Dec. 2017, Lead author

OptRod: operating multiple various actuators simultaneously by projected images
Ryo Shirai; Yuichi Itoh; Taichi Fukamachi; Mayu Yamashita; Takao Onoye
SIGGRAPH Asia 2017 Emerging Technologies, 27 Nov. 2017, Peer-reviewed, Lead author

Toward real-time 3D modeling system with cubic-millimeters wireless sensor nodes
Masanori Hashimoto; Ryo Shirai; Yuichi Itoh; Tetsuya Hirose
2017 IEEE 12th International Conference on ASIC (ASICON), Oct. 2017, Invited

Dedicated antenna less power efficient OOK transmitter for mm-cubic IoT nodes
Ryo Shirai; Tetsuya Hirose; Masanori Hashimoto
2017 47th European Microwave Conference (EuMC), Oct. 2017, Peer-reviewed, Lead author

Near-field dual-use antenna for magnetic-field based communication and electrical-field based distance sensing in mm3-class sensor node
Ryo Shirai; Jin Kono; Tetsuya Hirose; Masanori Hashimoto
2017 IEEE International Symposium on Circuits and Systems (ISCAS), May 2017, Peer-reviewed, Lead author

Misc.

360度視野角を有する3Dディスプレイの実現に向けた極小画素ドットへの水中無線給電技術
白井僚; 森聖太; 渡辺悠介; 中村柚希; 橋本昌宜
電子情報通信学会集積回路研究会学生若手研究会, Dec. 2021, Lead author

磁性体金属異物に対してロバストな直流磁界を用いた位置推定手法の検討
田中稔久; 白井僚; 橋本昌宜
電子情報通信学会集積回路研究会学生若手研究会, Dec. 2021

小体積 IoT ノード向け磁界式バックスキャッタ通信手法の提案と評価
木村侑希大; 白井僚; 橋本昌宜
電子情報通信学会集積回路研究会学生若手研究会, Dec. 2021

小体積位置推定センサノードを利用した3次元リアルタイムモデリングシステム
白井僚; 清水綾平; 橋本昌宜
電子情報通信学会集積回路研究会学生若手研究会, Dec. 2019, Lead author

日常生活が可能なウェアラブルコイルを用いたカプセル内視鏡の姿勢・位置推定の検討
清水綾平; 白井僚; 橋本昌宜
電子情報通信学会集積回路研究会学生若手研究会, Dec. 2019

送信機と電源線のインピーダンスを整合させる電源線アンテナ化手法
白井僚; 橋本昌宜
電子情報通信学会集積回路研究会学生若手研究会, Dec. 2019, Lead author

単一アンカーコイルと地磁気センサによる3次元位置推定
白井僚; 橋本昌宜
LSIとシステムのワークショップ, May 2019

超小型IoTノード向けアンテナ組み込み型OOKトランスミッタの実装と評価
白井僚; 廣瀬哲也; 橋本昌宜
第45回アナログRF研究会, Mar. 2016, Lead author

Awards

17 Apr. 2025
電子情報通信学会関西支部, 活動功労賞
Japan, Others
白井僚

10 May 2024
IEEE Solid-State Circuits Society Kansai Chapter, IEEE SSCS Kansai Chapter Academic Research Award
微弱なコイル間磁界結合を利用して高効率無線給電と省電力無線通信を両立する磁界式バックスキャッタ通信回路, Japan, Japan society
Ryota Fukugasako, Masanori Hashimoto, Ryo Shirai

10 May 2023
電子情報通信学会集積回路研究会, 集積回路研究会優秀若手講演賞
Japan, Japan society
田中稔久，白井僚，橋本昌宜

10 May 2022
電子情報通信学会集積回路研究会, LSIとシステムのワークショップ最優秀ポスター賞
Japan society
白井僚，橋本昌宜

10 May 2022
電子情報通信学会集積回路研究会, 集積回路研究会優秀若手講演賞
Japan society
白井僚 , 森聖太 , 渡辺祐介 , 中村柚希 , 橋本昌宜

01 Mar. 2022
Konica Minolta Science and Technology Promotion Foundation, Konica Minolta Imaging Science Award
Publisher
Ryo Shirai

19 Feb. 2022
Tokyo Denki University, Yasujiro Niwa Outstanding Paper Award
Ryo Shirai

Sep. 2021
日本バーチャルリアリティ学会, 日本バーチャルリアリティ学会論文賞

Feb. 2021
IEEE 関西支部, 学生研究奨励賞

May 2020
電子情報通信学会集積回路研究会, 集積回路研究会優秀若手講演賞

Nov. 2019
ACM SIGGRAPH Asia, ACM SIGGRAPH Asia 2019 Best Demo Voted by Committee

May 2019
IEEE SSCS Kansai Chapter, IEEE SSCS Kansai Chapter Academic Research Award

May 2019
電子情報通信学会集積回路研究会, 集積回路研究会優秀若手講演賞

Jan. 2019
電子情報通信学会回路とシステム研究会, 回路とシステム研究会学生優秀賞

Mar. 2018
大阪大学, 情報科学研究科賞

Nov. 2017
ACM SIGGRAPH Asia, ACM SIGGRAPH Asia 2017 Emerging Technologies Best Demo Voted by Attendees

External funds: Kakenhi

Analysis and Development of Optimal Circuit Structure for Small Volume Wireless Communication Circuits for IoT
Grant-in-Aid for Research Activity Start-up
1001:Information science, computer engineering, and related fields
Kyoto University
Ryo Shirai
From 30 Aug. 2021, To 31 Mar. 2023, Project Closed
無線通信回路;磁界結合;電磁界;無線給電;無線通信;磁界;センサノード;IoT;磁界解析
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21K21284/

多数デバイスへ同時給電可能な，電磁理論的に安全かつ高効率なユビキタス無線給電技術
Grant-in-Aid for Early-Career Scientists
Basic Section 60040:Computer system-related
Kyoto University
白井僚
From 01 Apr. 2022, To 31 Mar. 2025, Granted
無線給電;磁界結合;電流チョッパ;水中無線給電;電磁理論;磁界;金属異物検知
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22K17867/

鉄筋コンクリート内に埋設可能な無線給電センサの開発と道路劣化診断システムへの応用
Grant-in-Aid for Early-Career Scientists
Basic Section 60040:Computer system-related
Kyoto University
白井僚
From 01 Apr. 2025, To 31 Mar. 2028, Granted
無線給電;鉄筋コンクリート;劣化診断;埋設センサ;弾性波センシング
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-25K21172/

Last Updated :2025/06/30

Education

Teaching subject(s)

From 01 Apr. 2025, To 31 Mar. 2026
Fundamental Practice of Electrical & Electronic Engineering
6119, Fall, Faculty of Engineering, 2

From 01 Apr. 2024, To 31 Mar. 2025
Fundamental Practice of Electrical & Electronic Engineering
6119, Fall, Faculty of Engineering, 2

From 01 Apr. 2023, To 31 Mar. 2024
Fundamental Practice of Electrical & Electronic Engineering
6119, Fall, Faculty of Engineering, 2

Last Updated :2025/06/30

Administration

Faculty management (title, position)

From 01 Apr. 2022, To 31 Mar. 2023
システム運用WG委員

From 01 Apr. 2022, To 31 Mar. 2023
情報セキュリティWG委員

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