G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 7/0037 (2006.01) G11B 7/007 (2006.01) G11B 19/247 (2006.01) G11B 27/19 (2006.01) G11B 27/24 (2006.01) G11B 27/30 (2006.01) G11B 7/26 (2006.01)
Patent
CA 2288596
Disclosed herein are a disc recording medium, a recording apparatus and a playback apparatus, more concretely, the present invention provides a disc recording medium wherein a circular track is created in advance to be used for recording data as a groove or a land, said track is wobbled to contain approximately fixed number of wobbling periods as counted in a longitudinal direction of said track, and said track includes rotational-angle marks each showing a predetermined rotational angular position on said disc recording medium. As a result, the precision and the reliability of recording can be attained.
Ishikawa Hideki
Kumai Satoshi
Mikami Tatsuo
Mine Norichika
Munekata Kazumi
Gowling Lafleur Henderson Llp
Sony Corporation
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