JPS5547574A - Optical character reading device - Google Patents

Abstract

PURPOSE: To read effectively the larger character than the sensor by detecting the respective white and black patterns respectively when the left end of the character reaches the left end portion of the view of the sensor and when the right end of the character reaches the right end portion of the view of the sensor, and synthesizing and processing.

CONSTITUTION: The analog signal read by the two dimensional sensor in which the photoelectrically converted element is arranged two-dimensionally is binary coded in the binary coded circuit 3. The output of the circuit 3 is added to the separate row black cell detecting circuit 13 for detecting the existence of the black cell of the respective row of the vertical direction and the temporary memory buffer memory 14 for memorizing temporarily the white and black pattern. In the circuit 13, the left and right end black cell detecting signals 15, 16 which detect the black cells of the right end and the left end rows are outputted and when there exist the black cells continuously throughout the several lines of the left and the right sides except the left and the right ends, the left side or the right side character element detection outputs 16 and 17 are outputted. The binary signal described in the memory 14 is accommodated in the left or the right image surface buffer memory 23, 24 based on the left or the right image surface detecting signals.

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