Appeal No. 1998-0879
Application 08/251,730
Claim 1 is reproduced below.
1. An image processing system for compressing a
digital data stream comprising a sequential series of
data blocks, each of said data blocks having a
beginning and representing a portion of a digitized
video image which is displayed as a succession of
multi-block frames, the image processing system
comprising:
a frame buffer store responsive to the digital
data stream for storing a plurality of sequential data
blocks representing an entire frame of the digitized
video image;
apparatus responsive to digital data in each of
the sequential data blocks for compressing the digital
data in each data block using one of a plurality of
compression techniques;
a comparator mechanism responsive to the stored
data blocks and to the digital data stream for
inserting into the digital data stream an escape code
which indicates a common compression characteristic
shared by a plurality of digital data blocks following
the escape code; and
apparatus responsive to the one of the plurality
of compression techniques and to the escape code for
inserting a header code at a beginning of each data
block, which header code when taken together with a
preceding escape code indicates the one of the
plurality of compression techniques used.
The Examiner relies on the following references:
Kantner, Jr. et al. (Kantner) 5,463,701 October 31,
1995
(filed January 18, 1994)
Bhargava et al. (Bhargava) 5,471,248 November 28, 1995
(filed November 13, 1992)
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