Optical disc medium, optical disc playback and recorder

Details Optical disc medium, optical disc playback and recorder Optical disc medium, optical disc playback and recorder

G - Physics

11

B

G11B 7/004 (2006.01) G11B 7/0045 (2006.01) G11B 7/007 (2006.01) G11B 20/10 (2006.01) G11B 20/12 (2006.01) G11B 27/19 (2006.01) G11B 27/24 (2006.01) G11B 27/30 (2006.01) G11B 7/005 (2006.01)

Patent

CA 2424008

A address information is recorded in a meandering track groove (2) of an optical disc medium. The track groove (2) consists of unit sections (22, 23), where the side faces of the unit sections (22, 23) are displaced periodically in the radial direction of the disc. This displacement oscillates in a single cycle along the track, and the pattern of displacement differs with the bit (subinformation) of address information allocated to each of the sections (22, 23).

Selon l'invention, des informations d'adressage sont enregistrées dans un sillon de piste en dents de scie (2) d'un disque optique. Le sillon de piste (2) est formé de sections unitaires (22, 23), des parties latérales des sections unitaires (22, 23) étant déplacées périodiquement dans la direction radiale du disque. Ce déplacement provoque l'oscillation d'un cycle unique le long de la piste, et le motif de déplacement diffère en fonction du "bit (sous-informations) d'informations d'adressage" associé à chacune des sections (22, 23).

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