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Picture signal compressed manner and device, picture signal restoration manner and device, picture signal compressed restoration manner and device, and printer device
Picture signal compressed manner and device, picture signal restoration manner and device, picture signal compressed restoration manner and device, and printer device
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机译:图像信号压缩方式和装置,图像信号恢复方式和装置,图像信号压缩恢复方式和装置以及打印机装置
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摘要
PROBLEM TO BE SOLVED: To improve a compressibility and to shorten the time of a restoration processing in the compression technique of picture signals using run length encoding. ;SOLUTION: At the time of one-dimensionally encoding and compressing the picture signals, a white (or black) run length at present calculated in a run length calculation part 1 is compared with the white (or black) run length stored one cycle earlier in a previous data storage part 2 in a comparison part 3. When they do not match, a code chart 6 prepared beforehand is referred to and conversion to codes is performed in a code conversion part 4. When they match, the conversion to prescribed repetitive codes is performed in a repetitive code conversion part 5 without referring to the code chart 6.;COPYRIGHT: (C)1997,JPO
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