Adaptive runlength coding based on zero and non-zero subblocks

Details Adaptive runlength coding based on zero and non-zero subblocks Adaptive runlength coding based on zero and non-zero subblocks

1996-03-27

1998-05-05

Tung, Bryan S.

Television

Bandwidth reduction system

Data rate reduction

348420, H04N 730

Patent

active

057482446

ABSTRACT:
A method, for use in a video signal encoding system, for processing a block of quantized transform coefficients first divides the block of quantized transform coefficients into a predetermined number of subblocks and detects one or more non-zero subblocks, each of the non-zero subblocks having at least one non-zero valued quantized transform coefficients therein. Thereafter, a predetermined sequence of the quantized coefficients is provided based on the detected non-zero valued subblocks, the provided sequence of the quantized transform coefficients consisting of all the coefficients within the non-zero subblocks. The predetermined sequence of the coefficients is then runlength and variable length coded for the transmission thereof.

REFERENCES:
patent: 4821119 (1989-04-01), Gharavi
patent: 5253055 (1993-10-01), Civanlar
patent: 5461422 (1995-10-01), Hsieh
patent: 5500678 (1996-03-01), Puri

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