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Featured researches published by Toshiya Akagi.


Joint International Symposium on Optical Memory and Optical Data Storage 1999 | 1999

Recording laser power control method based on wobble signal amplitude detection

Chikashi Inokuchi; Toshiya Akagi; Seiji Nishiwaki; Kenji Nagashima; Atsushi Miyazaki; Hiroyuki Yamaguchi

The DVD-RAM, now a world standard among rewritable high-capacity optical disks, is expected to have wide applications in the PC and AV fields. However, when a recording and reproducing optical disk’s surface is soiled with fingerprints or dust, generally some writing error can be happened. As a solution to this problem, this paper presents the method for controlling recording laser power to improve recording reliability.


Archive | 2001

Apparatus and method of controlling laser power

Yoshiyuki Miyabata; Toshiya Akagi


Archive | 1993

Controller and control method of laser power for recording information in an optical record medium

Toshiya Akagi; Yasuhiro Tai


Archive | 2000

Semiconductor laser control method and semiconductor laser control apparatus

Toshiya Akagi; Yoshiyuki Miyabata


Archive | 1999

Laser power controller and optical disk device

Chikashi Inokuchi; Shigeru Furumiya; Yoshiyuki Miyabata; Yuji Hisakado; Atsushi Miyazaki; Toshiya Akagi


Archive | 1999

Laser power control method and optical disk device

Atsushi Miyazaki; Hiroyuki Yamaguchi; Chikashi Inokuchi; Toshiya Akagi


Archive | 2002

Laser drive device

Kenichi Tatehara; Kiyoshi Nakamori; Toshiya Akagi


Archive | 2001

Method and apparatus for determining optical recording power used for recording onto an optical disk

Mamoru Shoji; Ariaki Ito; Takashi Ishida; Yukihiro Yamasaki; Toshiya Akagi


Archive | 2000

Information recording/reproducing device using optical disk and method therefor and information recording system and information recording method

Toyoji Gushima; Toshiya Akagi; Chikashi Inokuchi


Archive | 1992

Magneto-optic disk apparatus

Toshiya Akagi; Yukinori Okazaki

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