Adaptive coding and decoding of frames and fields

专利名称：Adaptive coding and decoding of frames and

fields of video

发明人：Atul Puri,Rangarajan Aravind申请号：US07/793063申请日：19911115公开号：US05227878A公开日：19930713

摘要：Improved compression of digital signals relating to high resolution videoimages is accomplished by an adaptive and selective coding of digital signals relating toframes and fields of the video images. Digital video input signals are analyzed and acoding type signal is produced in response to this analysis. This coding type signal may beused to adaptively control the operation of one or more types of circuitry which are usedto compress digital video signals so that less bits, and slower bit rates, may be used totransmit high resolution video images without undue loss of quality. For example, thecoding type signal may be used to improve motion compensated estimation techniques,quantization of transform coefficients, scanning of video data, and variable word lengthencoding of the data. The improved compression of digital video signals is useful forvideo conferencing applications and high definition television, among other things.

申请人：AT&T BELL LABORATORIES

代理人：E. S. Indyk

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