SELF-ADJUSTING WINDOW CIRCUIT WITH TIMING CONTROL

摘要

OF THE DISCLOSURE A self-adjusting window circuit suitable for fabrication as a monolithic integrated circuit, said self-adjusting window circuit comprising: (a) an input port for receiving an input sync pulse signal having a sequence of pulses appearing at a predetermined scan rate; (b) a positive edge detector coupled to said input port for producing a pulse output signal in response to detecting a pulse in said input sync pulse signal, (c) a latch for latching saidpulse output signal and producing a charging control signal; (d) a charging stage coupled to said latch and being responsive to said charging control signal for producing a window control signal in response to said pulse being detected; (e) a feedback network for coupling said window control signal to said positive edge detector and said positive edge detector having means for disabling and enabling operation of said positive edge detector in response to said window control signal.