Decoder for variable-length codes

Details Decoder for variable-length codes Decoder for variable-length codes

1978-01-13

1980-02-12

Springborn, Harvey E.

Boots, shoes, and leggings

340347DD, G06F 702

Patent

active

041886690

ABSTRACT:
Each data element in an inputted variable-length code word is matched simultaneously with correspondingly positioned data elements stored in a pair of memory units. The first memory unit has stored therein a plurality of variable-length code words which by their stored position in the memory unit represents the coded information contained in the inputted variable-length code word. The second memory unit has stored therein length-defining words each indicating the length of the corresponding variable-length code word stored in the first memory unit. The data elements of each corresponding word stored in both memory units and the variable-length code word are applied to substantially similar compare logic modules for outputting a signal which can be used to identify the information represented by the inputted variable-length coded word when a coincidence is found between one of the code words stored in the first memory unit and the inputted variable-length code word together with the sensing of the corresponding length-defining word stored in the second memory unit.

REFERENCES:
patent: 3675212 (1972-07-01), Raviv et al.
patent: 3701108 (1972-10-01), Loh et al.
patent: 3717851 (1973-02-01), Cocke et al.
patent: 3771139 (1973-11-01), Digby
patent: 3918047 (1975-11-01), Denes

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