发明名称 |
A POWER CONTROL CIRCUIT FOR A COLOR ENCODER OF A VIDEO CAMERA |
摘要 |
<p>A power control circuit for a color encoder of a video camera having a camera head portion, a signal processing circuit for generating a luminance signal and a chrominance signal, a color encoder supplied with the luminance signal and the chrominance signal and for generating a composite video signal, and an external output terminal at which the composite video signal is obtained includes a power switch for controlling the power supply to the color encoder, a comparator connected to the external output terminal and for comparing the level of a synchronizing signal at the external output terminal with a reference level and a control circuit supplied with the output of the comparator and for controlling the power switch such that the power switch is turned on when the external output terminal is terminated.</p> |
申请公布号 |
EP0203859(A3) |
申请公布日期 |
1988.07.27 |
申请号 |
EP19860401091 |
申请日期 |
1986.05.23 |
申请人 |
SONY CORPORATION |
发明人 |
YAMAMOTO, ISAMU;NAITO, MASAO |
分类号 |
H04N5/77;(IPC1-7):H04N5/76 |
主分类号 |
H04N5/77 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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