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发明名称
共用天线电视计时器
摘要
本实用新型涉及一种共用天线电视计时器,它是由微处理器与外接电路组成,外接电路包含有电源、复位,存储器。射频放大,微伏比较器,显示,按键。射频放大电路对输入射频信号放大后输出,微处理器自动监测射频信号是否被用户取用,被取用时,累计使用时间,并根据事先设定的收费方法计算费用。使用时间或费用通过显示屏显示。本实用新型具有掉电保护功能,可应用于共用天线电视系统计时收费或其他电器使用时间累计。
申请公布号
CN2253079Y
申请公布日期
1997.04.23
申请号
CN95206505.3
申请日期
1995.03.20
申请人
宋立昌
发明人
宋立昌
分类号
H04N7/16
主分类号
H04N7/16
代理机构
代理人
主权项
1.一种共用天线电视计时器,其特征在于它是由中央微处理器与外接电路组成,中央微处理器包含有单片机,通过地址,数据,控制线与外接电路相连,外接电路包含有电源复位。存储器射频放大、微伏比较器、显示、按键等单元电路。电源的输入端与市电相连,输出端与各电路的电源输入端相连,存储器输入输出均与微处理器相连,射频放大电路输入端与射频输入相连,输出端与射频输出,微伏比较器相连,微伏比较器输入端与射频放大器相连,输出端与中央处理器相连,显示电路输入端与微处理器相连,按健输出与微处理器相连。
地址
350015福建省福州市马尾君竹路83号
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