发明公开
EP0652559A2 Data readout system for optical disk 失效
Datenlesesystemfüroptische Platten。

Data readout system for optical disk
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.
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