G - Physics – 11 – B
Patent
G - Physics
11
B
352/32.1, 352/32
G11B 7/00 (2006.01) G11B 7/007 (2006.01) G11B 11/10 (2006.01) G11B 11/105 (2006.01) G11B 13/04 (2006.01) G11B 20/12 (2006.01) G11B 27/19 (2006.01) G11B 27/24 (2006.01) G11B 27/30 (2006.01)
Patent
CA 2039700
In an optical recording medium on which the main information is recorded on a pre-formed recording track along the track direction and in which the recorded data are read out by optical means, frame sync signals based on the same format as the format for the main information are pre-recorded by offsetting the recording track itself along its width for each frame as an information recording unit, for facilitating frame synchronization and simplifying the construction through the of a sole common synchronizing circuit. The information pre-recorded by offsetting the track itself along its width includes not only the frame sync signals but also any reproduce-only information for increasing the disc recording capacity. The reproducing circuit for reproducing the frame sync signals of the main information recorded along the track direction of the recording track, and the reproducing circuit for reproducing the frame sync signals having the same format as the main information among the information recorded by offsetting the track along its width, are formed as a common circuit for simplifying the circuit construction.
Sako Yoichiro
Yamagami Tamotsu
Yamamoto Masanobu
Gowling Lafleur Henderson Llp
Sony Corporation
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