G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 20/14 (2006.01) G11B 11/105 (2006.01) G11B 20/10 (2006.01) H03K 5/08 (2006.01)
Patent
CA 2074691
An information reproducing circuit has a generating means, having virtually the same frequency transfer characteristic as a recording means. The generating means generates a slice signal having a level larger than the negative peak and smaller than the positive peak of a signal read out from a recording medium. A comparator compares the level of the readout signal with the slice signal and converts the readout signal into a binary signal. The information reproducing circuit is designed to minimize jitter contained in the readout signal, which appears due to the frequency transfer characteristic of the recording means. This is achieved by using the level variation of the slice signal, due to the selected frequency transfer characteristic of the generating means. Therefore, the signal read out from the recording medium can be accurately converted into a binary signal even if it contains jitter. Thus, the reliability of the reproduced data can be enhanced.
Fuji Hiroshi
G. Ronald Bell & Associates
Sharp Kabushiki Kaisha
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