| 摘要 |
<p>PURPOSE:To eliminate the effect to a reproduced video signal for a system which performs the selection and display of a mode under the control of a microcomputer, by setting a mode display command signal at a constant level in a reproduction mode. CONSTITUTION:A microcomputer which functions as a system control circuit 1 selects a mode in response to the operation of a control button part 2 and at the same time supplies a mode display command signal to a display part 3 to perform the display of a mode. The output is stopped periodically for the mode command signal in other modes than the reproduction mode. As a result, the part 3 has a blinking display. While the display is performed during the output of the mode display command signal in a reproduction mode. Thus the part 3 glows, and the mode display command signal is set at a constant level. In such a way, the power supply voltage or the earth potential have no fluctuation to eliminate an effect to a reproduced video signal.</p> |
