Pulse or digital communications – Bandwidth reduction or expansion
Reexamination Certificate
2007-02-13
2007-02-13
An, Shawn S. (Department: 2621)
Pulse or digital communications
Bandwidth reduction or expansion
C375S240260, C375S240270, C375S240230, C375S240010, C382S235000, C382S246000
Reexamination Certificate
active
09203672
ABSTRACT:
A method of representing encoding or non-encoding by extending a video information field of a block when coding video information, is provided. The method of representing encoding or non-encoding by extending an information field for representing encoding or non-encoding is applied to an error allowable mode. Also, the amount of bits depending on the characteristics of video information to be encoded can be reduced. In this method, an image is encoded by extending a code (COD) field which is used in H.263 and MPEG-4 to indicate the cases where neither a motion vector (MV) nor a discrete cosine transform (DCT) value are encoded, where both the MV and the DCT value are encoded, and where only the MV is encoded. Therefore, in a channel with errors, the extended OCD field can be used in the error allowable mode. Also, video information can be encoded using a smaller amount of bits where the motion of an image is constant, than in the conventional art.
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Park Jeong-hoon
Villasenor John D.
Wen Jiangtao
An Shawn S.
Sughrue & Mion, PLLC
The Regents of the University of California
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