Image analysis – Image compression or coding – Lossless compression
Reexamination Certificate
2005-06-28
2005-06-28
Couso, Yon J. (Department: 2625)
Image analysis
Image compression or coding
Lossless compression
C382S233000, C358S426130
Reexamination Certificate
active
06912320
ABSTRACT:
Disclosed herein is a method for decompressing compressed data. First, a table is prepared in which the number of bits, consecutively present to the right of the certain bit and having the same color as the certain bit, is listed. Then, a predetermined number of reference data bits is taken from a reference line. Next, the table is searched with both the reference data bits and a position of an attentional bit in the data bits, in order to detect the number of bits of the same color as the attentional bit which are consecutively present to the right of the attentional bit. Thereafter, a pixel, right away from the attentional bit by a distance equal to the addition of 1 and the detected number of bits, is found as a color-changed pixel on the reference line. The compressed data is decoded based on the position of the found color-changed pixel.
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Igarashi Isao
Shimada Tsuyahiko
Shimada Yoshiharu
Arent & Fox PLLC
Couso Yon J.
Fujitsu Limited
Hung Yubin
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