Picture receiver for measurement

Abstract

Abstract PURPOSE:To eliminate the flicker of display on a screen, by synchronizing the start and the end of a marker with a horizontal synchronizing signal. CONSTITUTION:The vertical synchronizing signal from a terminal X1 in inputted to monostable multivibrators 2 and 3 through a buffer 1. The flyback pulse from a terminal X2 is inputted to a D type flip flop 4 as a clock pulse through a buffer 5. The output of the monostable multivibrator 3 is supplied to a video circuit as a blanking signal Y1 and is synthesized with a pulse of the horizontal period by a waveform synthesizing circuit consisting of amplifiers A1 and A2 and diodes D1 and D2. The output of the amplifier A2 is supplied as an oscillation start pulse of an oscillator 6. The output of the oscillating circuit 6 is applied to a buffer circuit through a differentiating circuit and a waveform shaping circuit 7 and is further supplied to a color circuit.

Inventors

• 👤 Minoru Ueda
• 👤 Hirosuke Yamamoto

Bibliographic Details