Velocity tolerant decoding technique

Details Velocity tolerant decoding technique Velocity tolerant decoding technique

1978-12-21

1980-09-09

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

In specific code or form

360 51, G11B 509

Patent

active

042220807

ABSTRACT:
A decoding technique applicable to binary data encoded by phase encoding (PE), frequency modulation (FM), or modified frequency modulation (MFM). Resynchronization of the decoding clocking circuitry occurs upon every flux transition, rather than at less than all flux transitions, such as only at each data flux transition in the case of phase encoding. The technique provides substantially greater velocity tolerance than previous techniques for decoding codes encoded in this manner.

REFERENCES:
patent: 3597751 (1971-08-01), Heidecker et al.
patent: 3727202 (1973-04-01), Fort
patent: 3795903 (1974-03-01), Lindsey
patent: 3828167 (1974-08-01), Goldfarb
patent: 4040100 (1977-08-01), Chan
Encoding Serial Data for Error Minimization & Error Recovery--Webb et al., IBM T.D.B., vol. 16, #6, 11/73.
Standard 3M Recording Techniques Could Spur Low-Cost .mu.C Use--Kramer, EDN 5/5/78, pp. 75-81.

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