Method and apparatus for recording and reproducing coded digital

Details Method and apparatus for recording and reproducing coded digital Method and apparatus for recording and reproducing coded digital

1985-12-11

1988-05-31

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data in specific format

360 53, G11B 509

Patent

active

047485191

ABSTRACT:
Methods and apparatus for recording and reproducing coded digital signals typically assign values of a signal to 2 categories which are separately coded, delayed differently, and subsequently recorded. In order to reduce the loss of such values in the cases of damage to the recording to the greatest possible extent, the values of the signals are coded at least twice in parallel and recorded onto several tracks. In one of the recordings, the sequence of values is modified in such a way that even major damage to the recording can be accommodated without producing non-correctable errors.

REFERENCES:
patent: 3761903 (1973-09-01), Bird Jr. et al.
patent: 4316223 (1982-02-01), Baldwin et al.
patent: 4328580 (1982-05-01), Stockham Jr. et al.
patent: 4393502 (1983-07-01), Tanaka et al.
patent: 4506306 (1985-03-01), Veillarb
"A Design of Professional Digital Audio Recorder" by Doi et al., A.E.S. Preprint, 3/82.

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