Data reproducing apparatus and method

Details Data reproducing apparatus and method Data reproducing apparatus and method

1997-02-03

1998-12-08

Edun, Muhammad N.

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal gain processing

369124, 369 47, 360 48, G11B 700

Patent

active

058480404

ABSTRACT:
When performing data reproduction based on the partial response method, a reference pattern detection circuit detects the reference pattern directly from the reproduced signal that is supplied from a low pass filter, and supplies a timing signal to a calculation circuit. Based on the timing signal, the calculation circuit determines threshold levels that are used for data decoding in a decoder circuit based on the output level of an A/D converter circuit. As a result, a sector mark, which previously was used as a reference mark for reference pattern detection, does not need to be provided in the recording medium, thereby increasing the recording capacity for user data.

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patent: 5506827 (1996-04-01), Tobita
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