Title:
DIGITAL SIGNAL REPRODUCING DEVICE
Document Type and Number:
WIPO Patent Application WO/2007/010994
Kind Code:
A1
Abstract:
A digital signal reproducing device is provided with an analog-digital converter,
which performs sampling and quantization of a signal read out from an optical
recording medium by following a reproduction clock having a frequency which
is a half of a channel bit frequency, and outputs an obtained digital RF signal;
an offset correcting circuit which reduces an offset component in an amplitude
direction from the digital RF signal; and a simple interpolation filter which
restores and outputs a signal indicating a prescribed pattern recorded in the
optical recording medium from the output signal from the offset correcting circuit.
Controlling is performed to have a small value indicated by first phase error
information of a section of the prescribed pattern and second phase error information
of sections other than the section of the prescribed pattern.
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Inventors:
OGURA YOUICHI
HIRAKI TATSUSHI
TAKAO YORIKAZU
HIRAKI TATSUSHI
TAKAO YORIKAZU
Application Number:
PCT/JP2006/314407
Publication Date:
January 25, 2007
Filing Date:
July 20, 2006
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
OGURA YOUICHI
HIRAKI TATSUSHI
TAKAO YORIKAZU
OGURA YOUICHI
HIRAKI TATSUSHI
TAKAO YORIKAZU
International Classes:
G11B20/14; G11B20/10
Foreign References:
| JP2003036612A | 2003-02-07 | |||
| JP2000200467A | 2000-07-18 | |||
| JPH05274797A | 1993-10-22 | |||
| JP2000100083A | 2000-04-07 | |||
| JPH06195892A | 1994-07-15 | |||
| JPH0594664A | 1993-04-16 |
Attorney, Agent or Firm:
MAEDA, Hiroshi et al. (Hommachi 2-chome Chuo-k, Osaka-shi Osaka53, JP)
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