Macroblock mode decision biasing for video compression systems
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United States of America Patent
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Dec 13, 2005
Grant Date -
Jun 12, 2003
app pub date -
Jul 12, 2001
filing date -
Jul 12, 2001
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Abstract
A method, system, and computer program for coding video frames in a video compression system. One aspect includes automatically scaling coding mode biases as a function of the number of bits of coding precision in the video compression system, or dynamic range and/or contrast range, or quantization parameter. Another aspect includes selecting coding mode biases as a function of the total number of bits required for macroblock coding, or setting all biases to zero. Another aspect includes selecting one of a plurality of coding modes (1) resulting in no more than a selected number of coded bits, or (2) having at least a selected image quality, or (3) having a combination of number of coded bits and image quality. Another aspect includes selecting, as a preferred coding mode, one of a plurality of coding modes having a selected combination of number of coded bits and image quality based on various AC and DC motion vectors. Another aspect includes selecting, as a preferred frame coding choice, one of a plurality of frame coding choices having a selected combination of number of coded bits and image quality. The number of coded bits can also be determined for a set of selected quantization parameter (QP) values or quantization frequency weighting matrices, for each frame coding choice. This approach may also be used to select a preferred QP value or quantization frequency weighting matrix.
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Patent Owner(s)
- DEMOGRAFX;DOLBY LABORATORIES LICENSING CORPORATION;DOLBY LICENSING CORPORATION
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Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Demos, Gary A | Culver City, CA | 75 | 3571 |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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