Title:
METHOD FOR REPRODUCING OPTICAL DISC SIGNAL, AND OPTICAL DISC DEVICE
Document Type and Number:
WIPO Patent Application WO/2007/015492
Kind Code:
A1
Abstract:
An optical disc device is provided with means (116, 117) for generating a synchronization signal
from a signal which is read from a wobble and has position information configured by
a wobble groove; a timing correction circuit (127) for generating a control signal
having a time width (TW) prescribed time after the synchronization signal is
generated; and a DC level correcting means (126) for correcting a DC level of an
information read signal through clamping with a time width of a control signal. After
performing DC level correction by the DC level correcting means (126) to the information
read signal close to a head of a recorded data region, the signal is reproduced
by a binarizing means at a subsequent stage.
Inventors:
IWANAGA TOSHIAKI (JP)
Application Number:
PCT/JP2006/315233
Publication Date:
February 08, 2007
Filing Date:
August 01, 2006
Export Citation:
Assignee:
NEC CORP (JP)
IWANAGA TOSHIAKI (JP)
IWANAGA TOSHIAKI (JP)
International Classes:
G11B7/005; G11B20/10
Foreign References:
| JPS62204433A | 1987-09-09 | |||
| JPH11306680A | 1999-11-05 |
Other References:
See also references of EP 1912211A4
Attorney, Agent or Firm:
INAGAKI, Kiyoshi (Rindo Building 5F 37, Kanda-Higashimatsushita-ch, Chiyoda-ku Tokyo 42, JP)
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