Method for detecting starting position of data recording block

Details Method for detecting starting position of data recording block Method for detecting starting position of data recording block

1990-12-18

1993-08-03

Psitos, Aristotelis

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal gain processing

369 54, 360 51, H04N 576, G11B 2736, G11B 509

Patent

active

052335925

ABSTRACT:
A method for detecting a starting position of each data recording block or sector on a data recording medium, such as an optical disk. A VFO pattern and a CRC code are recorded at a starting position of each of the sectors. The VFO pattern and the CRC code are utilized for detecting a starting position of each sector with no predetermined pattern or sector mark, on the recording medium, which is dedicated for the starting position detection. This improves data formatting efficiency of the recording medium while maintaining the accuracies of automatic focusing and tracking even in a system employing pit-edge recording/reproducing.

REFERENCES:
patent: 4811124 (1989-03-01), Dujari et al.
patent: 4839878 (1989-06-01), Inoue et al.
patent: 4862295 (1989-08-01), Tanaka et al.

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