Rotary-head type PCM data recording/reproducing method and appar

Details Rotary-head type PCM data recording/reproducing method and appar Rotary-head type PCM data recording/reproducing method and appar

1984-12-24

1986-11-11

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

Converting an analog signal to digital form for recording;...

360 48, 360 49, G11B 509

Patent

active

046226001

ABSTRACT:
A rotary-head PCM data recorder in which PCM signals of m in number, a synchronizing signal, control signals related to the PCM signals, and a parity signal for error detection and correction are formed into data blocks, and data blocks of n in number are recorded on one track of a magnetic tape. Among the control signals, bits of signals common to n data blocks (i.e., information needed once for each track) are formed in distributed data allocated in a group of consecutive blocks or tracks, and multiple block distributive control data are recorded on one track multiple number of times, or multiple track distributive control data are recorded along n block strings a multiple number of times. In reproduction, block or track distributive data are composed to reproduce the control signals. The recorder thus arranged reduces the bit number needed for the control signals and compensates dropout of reproduced data due to scratches on the tape and the like.

REFERENCES:
patent: 4143406 (1979-03-01), Tsuiki et al.
patent: 4389681 (1983-06-01), Tanaka et al.
patent: 4403261 (1983-09-01), Tanaka et al.
patent: 4492989 (1985-01-01), Watanbe et al.

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