Method of processing data by performing a predetermined operatio

Details Method of processing data by performing a predetermined operatio Method of processing data by performing a predetermined operatio

1992-12-23

2000-07-11

Sax, Steven

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Plural load device systems

315115, G06F 1520

Patent

active

060885130

ABSTRACT:
At a data output apparatus side, raster image information, which is obtained by means of performing an exclusive OR operation between raster image information on the preceding line and raster image information on the current line, is compression-processed in a raster direction and then transmitted to a data processing apparatus. In the data processing apparatus, the received image information is expansion-processed, an exclusive OR operation between image information after the expansion and image information on the preceding line is carried out, and a processing for recording and the like is performed taking the thus obtained information as the raster image information on the current line. Thus it is possible to provide a higher compression rate of the image information with a simple processing and to improve a processing speed.

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