Information storage medium, information recording apparatus, and information playback apparatus
OwnerAkihito Ogawa, Hideo Ando +4inventors
InventorsAkihito Ogawa, Hideo Ando, Kazuo Watabe, Shintaro Takehara, Kazuto Kuroda, You Yoshioka
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Abstract
An information storage medium includes a wobbled track containing a wobble modulated in correspondence with playback control information. The playback control information contains address data. Part of the address data contains at least one item of sync information. The frequency of the wobble changes at the boundary of the sync information.
Claims10
An information storage medium comprising:
- a wobbled track containing a wobble modulated in correspondence with playback control information,
- wherein the playback control information contains header data,
- part of the header data contains at least one item of sync information, and
- the frequency of the wobble changes at the boundary of the sync information.
An information recording apparatus which records information on an information storage medium having a wobbled track containing a wobble modulated in correspondence with playback control information, in which the playback control information contains header data and address data, part of each of the header data and the address data contains at least one item of sync information, and the frequency of the wobble changes at the boundary of the sync information, comprising:
- a read section configured to read the playback control information from the wobble contained in the wobbled track;
- a sync signal detection section configured to detect a sync signal from the sync information contained in the playback control information read by the read section;
- and
- a recording section configured to play back the header data and the address data in synchronism with the sync signal detected by the sync signal detection section and record target information at a target position on the basis of the address data.
An information playback apparatus which plays back information from an information storage medium having a wobbled track containing a wobble modulated in correspondence with playback control information, in which the playback control information contains header data and address data, part of each of the header data and the address data contains at least one item of sync information, and the frequency of the wobble changes at the boundary of the sync information, comprising:
- a read section configured to read the playback control information from the wobble contained in the wobbled track;
- a sync signal detection section configured to detect a sync signal from the sync information contained in the playback control information read by the read section;
- and
- a playback section configured to play back the header data and the address data in synchronism with the sync signal detected by the sync signal detection section and playing back target information from a target position on the basis of the address data.
Dependencies are inferred from the claim text.