Appeal No. 1998-0879
Application 08/251,730
This is a decision on appeal under 35 U.S.C. § 134 from
the final rejection of claims 1-33.
We reverse.
BACKGROUND
The disclosed invention is directed to a method and
system for compressing and decompressing luminance and
chrominance information within a video data stream. The
selected compression techniques are encoded utilizing
selected escape codes and header codes. An escape code is
inserted into the video stream to indicate a common
compression characteristic; in the disclosed embodiment one
mode would indicate real-time compression and a second mode
would indicate off-line compression (figure 2A). Header
codes are inserted at the beginning of each data block. A
header code when taken together with a preceding escape code
indicates which of the multiple compression techniques was
utilized to compress the associated data. Compression
efficiency is achieved in two ways. First, because of the
escape code, the amount of encoded data in the compressed
video data stream is reduced. Second, a header code can
utilize a smaller number of bits to represent diverse
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