Appeal No. 2001-2575
Application No. 09/074,545
BACKGROUND
Appellant’s invention is directed to a method and apparatus
for compressing small amounts of image data to improve the
compression ratio and to reduce the effects of lost data
associated with the data compression. A data compression
algorithm transforms image data from RGB color space to luminance
and chrominance data values, reduces the number of chrominance
data values and performs a run length encoding of the reduced
data.
Representative independent claim 1 is reproduced below:
1. A method for compressing image data of a graphical
icon, comprising the steps of:
receiving image data of a graphical icon having a size which
is less than a 256 x 256 pixel array in a first format;
transforming said image data of said graphical icon from
said first format to a luminance format comprising luminance and
chrominance data values;
reducing the number of chrominance data values by a factor
of N:1, where N>1;
run length encoding said luminance data values and said
reduced chrominance data values to generate a compressed data
stream; and
storing said compressed data stream in a memory device.
2
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