Sampled-servo type optical disk having clock pits arranged offse

Details Sampled-servo type optical disk having clock pits arranged offse Sampled-servo type optical disk having clock pits arranged offse

1994-11-17

1996-12-24

Nguyen, Viet Q.

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

3692753, 369 58, 369 52, G11B 700

Patent

active

055879926

ABSTRACT:
An optical disk is formed by arranging synchronization pits present on each track of the optical disk to align with each other in the radial direction of the disk. Further, the clock pits which are present on the tracks of the optical disk are arranged to deviate from each other in a reading direction of the disk per adjacent track in the radial direction of the disk. An apparatus for reproducing the recorded information compares the size of each value of read-out signal obtained at the respective estimated detection timing of the clock pits for detecting phase, and corrects the phase of the reproducing clock on the read-out signal obtained by the estimated detection timing corresponding to the result of such comparison. With the structure as described above, the phase of the reproducing clock can be corrected without being affected by cross talks from the adjacent tracks.

REFERENCES:
patent: 5172352 (1992-12-01), Kobayashi
patent: 5214629 (1993-05-01), Watanabe et al.

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