Patent ID: 6294951
Filing Date: 2001-09-25
Classification: G11B,H03K

Abstract:
A time domain filter circuit, comprising:an input change detecting circuit for detecting a change in an input signal to the time domain filter circuit relative to an output signal from the time domain filter circuit, and for providing an output of a detection signal; anda monostable multivibrator with a capacitor having a predetermined time constant of charge or discharge, the detection signal being fed to the capacitor,the time domain filter circuit preventing the input signal from being level-shifted before a prescribed fixed time elapses from a timing of change of the detection signal, by detecting the fixed time elapsed and changing a level of the output signal according to the input signal after the fixed time elapses,wherein gate means are provided between the input change detecting circuit and the monostable multivibrator to prohibit inputting of the detection signal for a predetermined time from the timing of change of the detection signal.