Optical record carrier and method for recording and reproducing

Details Optical record carrier and method for recording and reproducing Optical record carrier and method for recording and reproducing

1998-01-30

1999-02-02

Edun, Muhammad N.

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

369 59, 369 58, G11B 700

Patent

active

058674756

ABSTRACT:
An optical record carrier and methods and apparatuses for recording and reproducing an information on and from said optical recording carrier, whereby the effects of crosstalk from adjacent tracks is reduced, and stable tracing control is possible, is achieved. A recording track to which information divided into sector units is recorded is formed in a spiral or concentric pattern on the surface of the optical record carrier. Each sector further comprises sixty frames. Each frame comprises a re-sync pattern, frame address, data, and postamble fields. Identification information identifying the sector location of the information is recorded to the data block of the first frame. The user data is recorded after the data is scrambled using a value generated by a fifteen-stage maximum-length sequence generator based on the value of this identification information. The correlation between signals on adjacent tracks is thus reduced, and the effects of crosstalk are randomized, thus reducing the effect on the track error signal and enabling extremely stable tracking control.

REFERENCES:
patent: 3876842 (1975-04-01), Bouwhuis
patent: 4057833 (1977-11-01), Braat et al.
patent: 4740940 (1988-04-01), Tanaka et al.
patent: 5541960 (1996-07-01), Satomura et al.

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