TW366445B - Time pulse converting circuit for elimination of short-cycle signals generated by conversion of time pulse signals - Google Patents

Abstract

The present invention is a time pulse converting circuit for elimination of short-cycle signals generated by conversion of time pulse signals, having: a selection circuit, for the selection of time pulse signal generated by the first time pulse generator from a number of time pulse generators of different frequencies and outputting the same, having each of the time pulse signals 2 different logic potentials; a first detection circuit, for the detection of the a preset logic potential included in the output of the selected circuit after receiving a time pulse conversion signal and, after the first detection circuit detecting the preset logic circuit, said selection circuit, based on the time pulse selection signal, selects the time pulse signal generated by the second time pulse generator for outputting the same; a hold circuit, for holding of the output of the selected circuit and keeping it unchanged after the first detection circuit detects the preset logic potential; the first and second detection circuit, for the detection of the preset logic potential included in the output of the selection circuit, after the hold circuit holds the output of the selected circuit and, when the second detection circuit detects the preset logic circuit, the second detection circuit would close the hold circuit for outputting the selected circuit and passing through the hold circuit on.