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Akio Yamakawa

Sony Broadcast & Professional Research Laboratories

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Publication

Featured researches published by Akio Yamakawa.

Archive | 1996

Method and apparatus for playing back multilayer disk

Akio Yamakawa; Tetsuo Usui; Masamichi Utsumi

Archive | 2001

Optical pickup for discriminating between and reading different types of optical discs

Kamon Uemura; Kiyoshi Ohsato; Akio Yamakawa; Masamichi Utsumi

Archive | 1988

Optical information reproducing apparatus with tilt correction including projection and detection of a same diffusely illuminated field

Akio Yamakawa

Archive | 1996

Objective lens, optical head device and optical disc reproducing apparatus

Akio Yamakawa; Kamon Uemura

Archive | 1996

Method and device for identifying disc

Akio Yamakawa; Masamichi Utsumi

Archive | 1998

Objective lens, reproducing apparatus and reproducing method

Nobuyasu Kikuchi; Akio Yamakawa

Archive | 1996

Objective lens with two numerical apertures for reading/writing two optical discs

Akio Yamakawa; Kamon Uemura

Archive | 1995

Disk reproducing apparatus

Akio Yamakawa; Takehiko Saito; Yoshinori Matsumoto

Archive | 1983

Releasable cover locking device

Akio Yamakawa

Archive | 2010

Hologram device, tilt detection method, and tilt correction method

Akio Yamakawa; Yoshiki Okamoto; Kenji Tanaka; Kazutatsu Tokuyama; Koji Takasaki

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Kyoko Suzuki

Kitami Institute of Technology

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