Optical disk, tracking error signal generating apparatus, and tr

Details Optical disk, tracking error signal generating apparatus, and tr Optical disk, tracking error signal generating apparatus, and tr

1993-07-09

1995-07-18

Epps, Georgia Y.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4426, 3692753, 369 4428, 369 54, G11B 700

Patent

active

054348366

ABSTRACT:
An optical disk includes: a plurality of recording tracks, each of the recording tracks having a data area for storing data, and a servo control information area for storing servo information; and tracking pits respectively formed on n neighboring recording tracks, which are adjacent to each other in a radial direction of the optical disk, where n is an integer not less than 3. The tracking pits are located in the servo control information area of each of the n neighboring recording tracks and are spaced apart from each other by a distance not less than a radius of a beam spot for reading data from the optical disk. The tracking pits of the n neighboring recording tracks are located on different radial lines of the optical disk.

REFERENCES:
patent: 5099467 (1992-03-01), Sumihiro et al.
patent: 5128916 (1992-07-01), Ito et al.
patent: 5157645 (1992-10-01), Takahara et al.
patent: 5191571 (1993-03-01), Fukumoto et al.
patent: 5193081 (1993-03-01), Osawa et al.
patent: 5214629 (1993-05-01), Watanabe et al.
patent: 5272686 (1993-12-01), Shigemori

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