Variable length encoding system

Details Variable length encoding system Variable length encoding system

1997-12-29

2000-01-11

Williams, Howard L.

Coded data generation or conversion

Digital code to digital code converters

To or from variable length codes

341 63, 341 60, 348423, 348403, 382245, 382246, H03M 740

Patent

active

06014095&

ABSTRACT:
There is provided a high speed variable length coding system having a small hardware scale. This variable length coding system includes a variable length code table, a memory for storing quantized DCT coefficients, a section for sequentially coding the read-out quantized DCT coefficients, so as to output a variable length code table address in the case of a variable length code, and a code word and a code length in the case of a fixed length code, a section for coding information to be coded other than the quantized DCT coefficients, so as to output a variable length code table address in the case of a variable length code and a code word and a code length in the case of a fixed length code, a selector for selecting an address for the variable length code, a selector for selecting a code of the fixed length code, a delay circuit for delaying the code of the fixed length code, a selector for selecting one of the variable length code and the fixed length code, and a unit for putting the selected codes in a string so as to form a code string.

REFERENCES:
patent: 5381144 (1995-01-01), Wilson et al.
patent: 5400075 (1995-03-01), Savatier
patent: 5539401 (1996-07-01), Kumaki et al.
patent: 5563593 (1996-10-01), Puri
patent: 5644306 (1997-07-01), Brent
patent: 5835145 (1998-11-01), Ouyang et al.

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