JPS56103774A - Discrimination data fetching device of character - Google Patents

Abstract

PURPOSE:To make circuit configuration simpler and reliability of character discrimination higher by so constituting a device as to discriminate characters by segmenting characters into one direction, reading them as analog signals and digitizing these analog signals. CONSTITUTION:As a card is run with respect to a magnetic head 3, the analog signals for detecting characters are inputted to an integrating circuit 4 and a monostable multi 5, respectively. The circuit 4 integrates the input signals and outputs the integrated signal to an offset circuit 6 and a holding circuit 7. The monostable multi 5 outputs a pulse to a clock oscillator 8 every time when the signal is inputted. While this pulse is continuous, a sampling pulse oscillator 9 outputs a sampling pulse to the circuit 7 and a discrimination circuit 14. The circuit 7 holds the voltage of the input signal at the point of this sampling pulse. The outputs of the circuits 6, 7 are applied to comparators 10, 11, which in turn apply the signals indicating whether the output of the circuit 4 is of increasing tendency or decreasing tendency to the circuit 14 via FF12, 13. The circuit 14 discriminates the characters of the card by these input signals.