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Featured researches published by Akio Fukushima.


international conference on consumer electronics | 2008

Development of Optical Disc Servo Simulation Based on Actual Waveform Data

Shinsuke Onoe; Yoshinori Ishikawa; Motoyuki Suzuki; Akio Fukushima

A new servo simulation method based on actual waveform data has been developed. The actual track displacement of an optical disc is calculated from a measured servo error signal using an inverse model of the optical disc drive. The simulation result well corresponds with the actual servo response.


Archive | 1997

Optical disc apparatus accessing method and system therefor

Kazuhiko Ono; Eiji Ikeda; Hiroshi Minoda; Akio Fukushima; Hiroaki Shioyama; Shigeki Inoue


Archive | 2002

Watermark information detection method

Isao Echizen; Hiroshi Yoshiura; Hiroyuki Kimura; Akio Fukushima; Kousuke Anzai


Archive | 2001

Method and apparatus for data reproduction

Akio Fukushima; Hiroyuki Kimura; Hiroo Okamoto


Archive | 1994

Disk reproducing apparatus capable of increasing speed of access to disks recorded at constant linear velocity

Toshifumi Takeuchi; Shigeki Inoue; Akio Fukushima; Takao Arai; Yutaka Nagai


Archive | 2002

Data encryption method, recording medium, data transfer apparatus, and encrypted data decryption method

Akio Fukushima; Hiroyuki Kimura


Archive | 2001

Electronic watermark embedding apparatus and method and a format conversion device having a watermark embedding function

Akio Fukushima; Hiroyuki Kimura; Michihiro Tateishi


Archive | 1987

INFORMATION RECORDING AND REPRODUCING SYSTEM AND INFORMATION RECORDING MEDIUM

Akio Fukushima; Yuji Kishi; Yoshio Miura; Junji Nakajima


Archive | 1997

Method and apparatus for automatically discriminating types of optical disks

Shigeki Inoue; Hiroshi Minoda; Hiroyuki Tanaka; Akio Fukushima; Kazuhiko Ono


Archive | 1994

High-deesity optical disk and reproducing device therefor

Akio Fukushima; Masayuki Inoue; Junji Nakajima; Yoshio Suzuki; 順次 中島; 雅之 井上; 秋夫 福島; 芳夫 鈴木

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