发明公开
- 专利标题: A MULTIPLE DISPLAY CONTROL APPARATUS FOR A TELEVISION RECEIVER
- 专利标题(中): 电视接收机的多显示控制装置
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申请号: EP83303510申请日: 1983-06-17
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公开(公告)号: EP0097500A3公开(公告)日: 1986-12-30
- 发明人: MIKI, YUTAKA , NOZOE, TOSHIROU , UCHIMURA, KIYOSHI
- 申请人: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- 专利权人: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- 当前专利权人: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- 优先权: JP10590582 1982-06-18; JP10590782 1982-06-18; JP10590882 1982-06-18
- 主分类号: H04N9/64
- IPC分类号: H04N9/64 ; H04N9/535 ; H04N9/537
摘要:
A multiple display control apparatus for a television receiver used for displaying a plurality of signals on a display tube. In a case of switching a first signal output and a second signal output of a signal process circuit are switched by switching circuits, when the two output signals are about equal in the brightness level to each other, the picture is very indistinct. Thus, the first signal level is lowered by means of gain control circuits, the characteristic thereof depending on an output impedance of the signal process circuit and resistances. The control signals for switching and gain control are superposed each other as one signal, so that only one line is used for control signal.
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