| 摘要 |
PURPOSE:To perform the comparison arithmetic processing of the image information at a high speed by providing a comparison arithmetic part between a control part and an image memory part, comparing immediately an address designated by the control part in an image memory part with the color information read out of the image memory part, and outputting the result of the comparison to the control part. CONSTITUTION:A control part 2 designates an address of an image memory part 1 storing the desired image information to be compared and then reads out the color information. This color information is fetched to a comparison arithmetic part 4 for immediate comparison arithmetic. At the same time, the color information to be compared and set to a comparison register part 3 is fetched by the part 4. Thus the part 4 performs immediately the comparison between both color information. The result of the comparison is outputted to the part 2 as it is. Therefore the result of comparison is read out of the part 4 at the same time point when the part 2 usually designates and reads out the address of the part 1. Thus the comparison arithmetic processing of the image information is carried out at a high speed. |
