Byte-wide encoder and decoder system for RLL (1,7) code

Details Byte-wide encoder and decoder system for RLL (1,7) code Byte-wide encoder and decoder system for RLL (1,7) code

1985-06-13

1987-08-18

Sloyan, T. J.

Communications: electrical

Audible indication

Percussion-type sound producer

360 39, 360 40, H03M 728

Patent

active

046880160

ABSTRACT:
A system for encoding consecutive parallel bytes of source data into an RLL (1,7) output symbol string and decoding an input RLL (1,7) symbol string to produce an output sequence of parallel bytes of data. The system accepts an input sequence of parallel data bytes occurring at a byte rate and provides, in response, the output RLL symbol string at a symbol string rate which is twelve times the byte rate. Similarly, the output byte sequence has a byte rate which is 1/12 of the input RLL symbol string rate. The system performs RLL encoding and decoding at the byte rate, thus eliminating the odd 2/3 f.sub.C source clock required in systems performing RLL coding and decoding functions on a bit-by-bit basis.

REFERENCES:
patent: 3685033 (1972-08-01), Srivastava et al.
patent: 4115768 (1978-09-01), Eggenberger et al.
patent: 4337458 (1982-06-01), Cohn et al.
patent: 4413251 (1983-11-01), Adler et al.
patent: 4488142 (1984-12-01), Franaszek

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