Apparatus for encoding extended run-length codes

Details Apparatus for encoding extended run-length codes Apparatus for encoding extended run-length codes

1975-07-17

1976-10-05

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

H03K 1324

Patent

active

039848337

ABSTRACT:
Apparatus for encoding ordinary run-length codes and run-length codes that have been extended to include two classes of code words, regular code words for runs and special code words for selected special situations. The encoder comprises table storage, select/combine circuitry, and shift-out circuitry. The table storage holds four small tables whose values can be adjusted to correspond to any ordinary or extended run-length code to be implemented. The select/combine circuitry accepts as input a binary value that uniquely identifies the desired code word, and combines this binary value with selected table values to calculate the desired code word. The code word bits are then outputted sequentially by the shift-out circuitry.

REFERENCES:
atrubin, "IBM Technical Disclosure Bulletin," vol. 14, No. 3, Aug. 1971, pp. 874-876.

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