发明公开
- 专利标题: Data readout system for optical disk
- 专利标题(中): Datenlesesystemfüroptische Platten。
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申请号: EP94307006.0申请日: 1994-09-26
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公开(公告)号: EP0652559A2公开(公告)日: 1995-05-10
- 发明人: Taguchi, Masakazu, c/o Fujitsu Limited , Izumi, Haruhiko, c/o Fujitsu Limited
- 申请人: FUJITSU LIMITED
- 申请人地址: 1015, Kamikodanaka, Nakahara-ku Kawasaki-shi, Kanagawa 211 JP
- 专利权人: FUJITSU LIMITED
- 当前专利权人: FUJITSU LIMITED
- 当前专利权人地址: 1015, Kamikodanaka, Nakahara-ku Kawasaki-shi, Kanagawa 211 JP
- 代理机构: Godsill, John Kenneth
- 优先权: JP279943/93 19931109; JP333355/93 19931227; JP47543/94 19940317; JP167206/94 19940719; JP225433/94 19940920
- 主分类号: G11B20/10
- IPC分类号: G11B20/10 ; G11B7/00
摘要:
A system reproduces data from an optical disk (1) in which a signal obtained by encoding recording data in accordance with a recording rule including a rule corresponding to a partial response class I characteristic has been recorded. The system includes an optical head (2) for reproducing a signal from the optical disk, an analog-to-digital converter (13) for sampling the signal reproduced by the optical head (2) at predetermined timing and for outputting sampling data, a determination unit (51-55, 57) for determining, based on the sampling data from the analog-to-digital converter, a transition state of data to be reproduced in accordance with a transmission line characteristic of the reproduction system for the optical disk, and a data decision unit (56, 58-62) for deciding maximum likelihood reproduction data at present timing based on the determination result obtained by the determination unit.
公开/授权文献
- EP0652559B1 Data readout system for optical disk 公开/授权日:2006-08-09
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