Title:
OPTICAL DISC AND OPTICAL DISC RECORDING PIAYBACK APPARATUS
Document Type and Number:
Japanese Patent JP2001034951
Kind Code:
A
Abstract:
To enable the read of address information recorded as waveforms of wobbles provided at grooves of a disc for recording signals on lands and grooves even at the record playback time on not only the grooves but lands, using only one laser beam.
A detected wobble waveform 175 intersects time points 1761, 1762,..., 176n ascendingly in relation to a base axis, synchronizing signals D1, D2,..., Dn are generated at the points 1761, 1762,..., 176n, and hence synchronizing signals for playback signals can be generated, without forming special wobbles different from those for forming fine clock marks for generating the synchronizing signals in the tracks.
Inventors:
ASANO KENJI
TORASAWA KENJI
MAMIYA NOBORU
UCHIHARA KAJI
WASHIMI SATOSHI
NAKAO KENJI
HIOKI TOSHIAKI
MATSUYAMA HISASHI
HORI YOSHIHIRO
TORASAWA KENJI
MAMIYA NOBORU
UCHIHARA KAJI
WASHIMI SATOSHI
NAKAO KENJI
HIOKI TOSHIAKI
MATSUYAMA HISASHI
HORI YOSHIHIRO
Application Number:
JP2000205803A
Publication Date:
February 09, 2001
Filing Date:
June 05, 1997
Export Citation:
Assignee:
SANYO ELECTRIC CO
International Classes:
G11B7/004; G11B7/007; G11B7/24073; G11B7/24076; G11B7/24082; G11B11/105; G11B20/12; G11B20/18; (IPC1-7): G11B7/007; G11B7/24; G11B11/105; G11B20/12; G11B20/18
Attorney, Agent or Firm:
Masano Shibano
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