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Dive into the research topics where Yasuaki Edahiro is active.

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Featured researches published by Yasuaki Edahiro.


1994 Topical Meeting on Optical Data Storage | 1994

High-speed and large-capacity phase-change rewritable disk recording for digital video

Kenji Koishi; Shigeru Furumiya; Yoshiharu Kobayashi; Hiromu Kitaura; Tadakatsu Shimada; Yasuaki Edahiro; Tadashige Furutani; Akira Kurahashi; Noboru Yamada

A rewritable digital video disc recorder, using four optical heads on both sides of a 30 cm disk which improves the data transfer rate up to 128 Mbps for phase change rewritable media, has been developed. We achieved 19 GB large capacity which realizes 20 minute Composite digital video signal recording, with new double sided multi-head MCAV method and high density mark edge recording.


Archive | 1996

Optical disk thickness discriminating apparatus

Shinichi Yamada; Mitsurou Moriya; Yasuaki Edahiro; Kouichi Takamine; Katsuya Watanabe


Archive | 1992

Tracking control apparatus for correcting tracking error signal according to approximate equation of a function of track address

Katsuya Watanabe; Masayuki Shibano; Hiroyuki Yamaguchi; Yasuaki Edahiro; Mitsuro Moriya


Archive | 1998

Tilt control apparatus with tilt target value based on bit error rate signal

Kouichi Takamine; Yasuaki Edahiro; Hiromichi Ishibashi; Mitsurou Moriya


Archive | 1996

Tilt control apparatus based on pulsed width detection of an information reproduced signal

Kouichi Takamine; Yasuaki Edahiro; Hiromichi Ishibashi; Mitsurou Moriya


Archive | 1991

Optical recording/reproducing device having means for adjusting servo loop gain and phase characteristics

Yasuaki Edahiro; Katsuya Watanabe


Archive | 1996

Disk rotation control apparatus with deceleration means

Kouichi Takamine; Shinichi Yamada; Yasuaki Edahiro; Mitsurou Moriya


Archive | 1997

Control devices for optical disk based on driving signal saturation

Shinichi Yamada; Takeharu Yamamoto; Yasuaki Edahiro; Mitsurou Moriya


Archive | 1990

Control apparatus for tracking a light beam on a track of an optical recording medium

Yasuaki Edahiro; Katsuya Watanabe; Mitsuro Moriya


Archive | 1991

Optical disk recording/reproducing apparatus and a photoelectric conversion amplifier therefor

Kazuhiro Aoki; Yasuaki Edahiro; Akira Kurahashi

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