| 摘要 |
<p>PURPOSE:To select any one of both left/right ends on a screen of a MUSE signal and to project the selected one by providing a transfer circuit varying the phase of a write control signal to a horizontal period conversion circuit. CONSTITUTION:A transfer circuit 9 varies the phase of write timing pulses Pc, Py from a synchronizing circuit 4 and is provided with variable delay lines (10-1)-(10-5) comprising flip-flops and an OR circuit 11. The delay quantity in all variable delay lines (10-1)-(10-5) is the same and the delay quantity is set simultaneously the same in response to the delay control signal. Thus, the delay quantity in the variable delay lines (10-1)-(10-5) is varied by operating the delay control signal. Since the phase of the part enabling and disabling the write by the write control signal is varied, the write area onto the video signal storage means in the MUSE signal is varied in the horizontal scanning direction and any one of both left and right ends on the screen of the MUSE signal is selected and projected.</p> |
