Sync signal detection apparatus for accurately synchronizing rep

Details Sync signal detection apparatus for accurately synchronizing rep Sync signal detection apparatus for accurately synchronizing rep

1987-02-27

1989-08-29

Richardson, Robert L.

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal gain processing

360 39, 360 41, 360 48, 375108, 375113, H04L 706, G11B 509, H03M 500

Patent

active

048624438

ABSTRACT:
A sync signal detection apparatus is provided wherein a sync signal represents the top of recorded data. The sync signal includes a plurality of marks each having a different pattern from the pattern of any other mark. The apparatus is equipped with a circuit for sequentially detecting the patterns of the individual marks in a reproduction mode. Also, a circuit is provided generating a sync pulse at the top of the data in accordance with the address pattern of the mark after a predetermined number of marks are detected. The apparatus ensures accurate reproduction of the recorded data with a small number of bits and an increase in data reliability.

REFERENCES:
patent: 3947878 (1976-03-01), McGrath et al.
patent: 4275466 (1981-06-01), Yamamoto
patent: 4697167 (1987-09-01), O'Keeffe et al.

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