Reproducing apparatus and reproduction method

Details Reproducing apparatus and reproduction method Reproducing apparatus and reproduction method

2011-03-15

2011-03-15

Pardo, Thuy N (Department: 2627)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Control of information signal processing channel

C369S047250, C369S053130, C369S053150

Reexamination Certificate

active

07907484

ABSTRACT:
A reproducing apparatus includes the following elements. A reproducing head unit irradiates an optical disk with a laser beam to obtain a reproduced signal. An offset cancellation circuit cancels an offset element of the reproduced signal. An automatic gain control circuit adjusts the amplitude of the reproduced signal processed through the offset cancellation circuit. A band switching control unit detects a fingerprint period during which the reproduced signal is affected by a fingerprint on the surface of the optical disk and, for the fingerprint period, switches a frequency band in which the offset cancellation circuit and the automatic gain control circuit function to a higher frequency band than that associated with a non-fingerprint period. A decoding unit decodes the reproduced signal processed through the automatic gain control circuit to output binary data. A data reproduction processing unit performs reproduction processing on the binary data to obtain reproduced data.

REFERENCES:
patent: 2002/0159347 (2002-10-01), Sasaki et al.
patent: 2003/0012105 (2003-01-01), Miyazaki et al.
patent: 2003/0076761 (2003-04-01), Abe et al.
patent: 2006/0188819 (2006-08-01), Takazawa et al.
patent: 2006/0215520 (2006-09-01), Lai et al.
patent: 2007/0153661 (2007-07-01), Ando et al.
patent: 2007/0247998 (2007-10-01), Maruyama et al.
patent: 2002-288839 (2002-10-01), None
patent: 2003-132533 (2003-05-01), None
patent: 2005-285293 (2005-10-01), None
patent: 2006-114074 (2006-04-01), None
patent: 2006-120255 (2006-05-01), None
patent: WO 01/52249 (2001-07-01), None

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