Dr. Hiroyuki Matsumoto Profile

Dr. Hiroyuki Matsumoto

at NHK Spring Co Ltd

SPIE Involvement:

Author

Publications (4)

Proceedings Article | 3 June 2004 Paper

Proposal of qualitative classification for security devices

Kenji Yamamotoya, Hiroyuki Matsumoto

Proceedings Volume 5310, (2004) https://doi.org/10.1117/12.527224

KEYWORDS: Information security, Manufacturing, Instrument modeling, Optical fibers, Measurement devices, Lead, Laser engraving, Diffraction, Adhesives

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Proceedings Article | 7 April 2000 Paper

Evaluating security of a clone preventive techinque using physical randomness and cryptography

Hiroyuki Matsumoto, Tsutomu Matsumoto

Proceedings Volume 3973, (2000) https://doi.org/10.1117/12.382182

KEYWORDS: Stochastic processes, Sensors, Computer security, Data modeling, Cryptography, Computer programming, Magnetism, Signal detection, Signal processing, Digital recording

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Proceedings Article | 7 April 2000 Paper

CPLgram: an advanced machine-readable OVD that is obtained by combining diffraction gratings and liquid crystals

Itsuo Takeuchi, Kenji Yamamotoya, Tsugutaka Sugahara, Hidekazu Hoshino, Hiroyuki Matsumoto, Tsutomu Matsumoto

Proceedings Volume 3973, (2000) https://doi.org/10.1117/12.382193

KEYWORDS: Diffraction, Liquid crystals, Diffraction gratings, Circular polarizers, Inspection, Holograms, Sensors, Eye, Polarization, Molecules

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Proceedings Article | 1 April 1998 Paper

Clone-preventive technique that features magnetic microfibers and cryptography

Hiroyuki Matsumoto, Keiichi Suzuki, Tsutomu Matsumoto

Proceedings Volume 3314, (1998) https://doi.org/10.1117/12.304696

KEYWORDS: Sensors, Magnetism, Signal processing, Computer programming, Magnetic sensors, Cryptography, Signal detection, Resistance, Data conversion, Head

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Conference Committee Involvement (2)

Optical Security and Counterfeit Deterrence Techniques VI

18 January 2006 | San Jose, California, United States

Optical Security and Counterfeit Deterrence Techniques V

20 January 2004 | San Jose, California, United States

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