JPS5690373A - Digitizing processing system for binary pattern - Google Patents

Abstract

PURPOSE: To convert a large amount of binary two-dimensional pattern information into a relatively small amount of numeric information nearly simultaneously with image pickup operation, by fetching binary-coded picture signals in all areas in frames successively into a window consisting of parallel outputs of a shift register group.

CONSTITUTION: Data of seven-by-seven elements from which parallel outputs of shift register group 7 can be extracted are inputted from an input terminal from picture signals and this element group is regarded as a window. Then, binary-coded picture signal 6 from ITV camera 2 is inputted to the shift register group with a shift clock signal, so that the binary-coded picture signal of an area of seven-by- seven picture elements at the left upper end will be inputted. Every time an advance is made by one clock, the window moves to right and, after reaching the right upper end, moves to the part under the left upper end. Thus, binary-coded picture signals of all areas in frames appear in the window successively. For this purpose, the output of the window is led to a logic circuit that detects the angle of a pattern, so that a large amount of binary two-dimensional pattern information can be converted into a relatively small amount of numeric information nearly simultaneously with image pickup operation.

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