Data reproduction system synchronized by recording data

Details Data reproduction system synchronized by recording data Data reproduction system synchronized by recording data

1994-08-11

1997-01-28

Hindi, Nabil

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal gain processing

369124, 369 48, G11B 700

Patent

active

055983928

ABSTRACT:
A data reproducing system obtains a reproduction signal via a head from an optical disk recording medium in which signals obtained by modulation of recording data in accordance with a rule corresponding to a partial response characteristic have been recorded and generates a data signal corresponding to the recording data based on the reproduction signal. The data reproducing system includes a clock generator for generating a synchronizing clock based on the reproduction signal, and a signal generating unit, operating in synchronism with the synchronizing clock generated by the clock generator, for sampling levels of the reproduction signal and for generating the data signal from the sampled levels in accordance with a maximum likelihood sequence estimation method.

REFERENCES:
patent: 5363352 (1994-11-01), Tobita et al.
patent: 5400189 (1995-03-01), Sato et al.
patent: 5420893 (1995-05-01), Ward
patent: 5450389 (1995-09-01), Hayashi
patent: 5455813 (1995-10-01), Hayashi
patent: 5469415 (1995-11-01), Fujita et al.

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