Readout of Optical Disk Recorded by Pit Edge and Depth Modulation

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概要

• 論文の詳細を見る

• We report a Read-only (ROM) disc which is recorded by pit edge and depth modulation (PEDM). The information recorded by pit edge modulation is read out through an RF signal channel, and that recorded by pit depth modulation is read out through a tangential push-pull signal channel by detecting signal polarity at the pit edge. Each signal is sliced with a single level and is combined with another signal so that a multi-value recording is realized without multiple level slicing. The information recorded and read out using tangential push-pull signal polarity can never be copied onto recordable discs. Thus, not only a larger recording density and a higher transfer rate but also secure information storage are achieved with no change of the current optical and mechanical systems.

• Publication Office, Japanese Journal of Applied Physics, Faculty of Science, University of Tokyoの論文
• 2001-03-30

著者

• Terashima Shigeo

  Optical Disk Development Center Sharp Corporation

• Ohta Kenji

  Corporate Research & Development Group, Sharp Corporation, 2613-1 Ichinomoto-cho, Tenri, Nara 632-8567, Japan

• Nakajima Junsaku

  Recording Systems Division, Audio-Visual Systems Group, Sharp Corporation, 2613-1 Ichinomoto-cho, Tenri, Nara 632-8567, Japan

関連論文

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• Transition of Magnetization Direction in AS-MO Disks (Special Issue on Information Storage Technologies for the 21st Century)
• New Disc Format for Land/Groove Recording on Magnetically Induced Super-Resolution Disc
• Magnetically Induced Superresolutiom Using Domain Stability
• Readout of Optical Disk Recorded by Pit Edge and Depth Modulation

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