JPS57125591A - Recorded picture control system - Google Patents

Abstract

PURPOSE:To eliminate the need for control lines required for recorded picture control and to enable recorded picture control from a camera side, by superimposing a control signal for VTR recording control during each vertical blanking signal period of a TV camera output signal and after the 2nd equivalent pulse period. CONSTITUTION:An output signal A from a TV camera 2 of a picture transmitter 1 is applied to a control signal generating circuit 14 and a mixer 3, and the circuit 14 generates a control signal B from the start point of the 1st equivalent pulse to 10-13 times the repetitive period of a horizontal synchronizing pulse. This signal B is taken as the same frequency as a color burst signal, and when a switch 5 is closed, a signal A from the camera 2 and the signal B from the circuit 14 are mixed at the mixer 3, and a signal C is applied to a timing pulse generating circuit 8, closed circuit 9 and VTR7 of a recorder 6. Timing pulse is outputted from the circuit 8 at each vertical blanking signal, the circuit 9 closes the horizontal synchronism and burst pulse and recording control of the VTR is made after the 2nd equivalent pulse period at the blanking period.