Optical disc and optical disc drive apparatus

Details Optical disc and optical disc drive apparatus Optical disc and optical disc drive apparatus

2005-06-21

2005-06-21

Hindi, Nabil (Department: 2651)

Dynamic information storage or retrieval

Binary pulse train information signal

Format arrangement processing for auxiliary information

C369S275300

Reexamination Certificate

active

06909683

ABSTRACT:
An optical disc is disclosed, having tracks formed in a spiral shape or a concentric circle shape, each of the tracks being radially divided into a plurality of zones, data being recorded and/or reproduced at different angular velocities in the individual zones in such a manner that the angular velocity in the same zone is the same, wherein a buffer area is formed at a zone boundary, and wherein at least one pit portion is formed in the buffer area so that the pit portion is almost radially adjacent to a pit portion of a zone on the inner periphery side and a pit portion of a zone on the outer periphery side.

REFERENCES:
patent: 5453974 (1995-09-01), Minoda et al.
patent: 6044051 (2000-03-01), Miyagawa et al.
patent: 04-301263 (1992-10-01), None
patent: 04-315823 (1992-11-01), None

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