Appeal No. 2001-0343
Application 08/911,526
Representative claim 1 is reproduced below:
1. A method for recompressing image representative input
pixel block data comprising a fixed first number of data bits to
provide recompressed pixel block data of a target fixed reduced
second number of bits less than said first number, the steps
comprising:
providing a hybrid quantization coding table including,
(a) a first codeword set comprising a plurality of
codewords of a first fixed bit length representing a
corresponding plurality of data quantization intervals of said
coding table,
(b) a second codeword set including a codeword of a
second fixed length shorter than said first length representing a
data quantization interval of said coding table;
dynamically selecting between codewords of said first and
second codeword sets in quantizing an input pixel block to
provide a recompressed pixel block of said target fixed reduced
second number of bits; and
assigning said selected codewords to data elements of said
input pixel block to provide a corresponding recompressed pixel
block containing said fixed reduced second number of bits.
The following references are relied on by the examiner:
Canfield et al. (Canfield) 5,818,530 Oct. 6, 1998
(filing date June 19, 1996)
Liu et al. (Liu) 6,009,203 Dec. 28, 1999
(effective filing date Apr. 18, 1995)
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