Character image processing system

TL;DR: In this article, the authors proposed a method to obtain contour point information at high speed by detecting the position of a bit existing in one word data, by only the time of a clock portion corresponding to the number of bits existing in the one-word data.

Abstract: PURPOSE:To obtain contour point information at high speed by detecting the position of a bit existing in one word data, by only the time of a clock portion corresponding to the number of bits existing in one word data CONSTITUTION:One word data 52 is stored in a register 4 through a selector 3, and the lowest order bit detecting part 5 outputs an output signal 6 for showing whether a bit exists or not A second bit is detected, and 0010 is outputted as bit position information 7 through a gate circuit 8, and sent as contour point information (a) to a painting-out processing part together with the memory address 51 of one word data 52 An encoder 9 outputs one word data in which only the bit shown by the bit position information 7 is set to '0', and an AND circuit 10 outputs one word data 0000000000000100 In the same way, the bit position information 7 of 1101 for showing the 13th bit is outputted from the lowest order bit detecting part 5, and contour point information (b) is obtained