发明授权
- 专利标题： Cable subscriber control device using shared jamming modules
- 专利标题（中）： 使用共享模块的电缆订户控制设备
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申请号： US673872申请日： 1991-03-22
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公开(公告)号： US5140633A公开(公告)日： 1992-08-18
- 发明人: Aravanan Gurusami , Robert Chamberlin , Victor Jacek , Thomas Strong , Jeffrey Cox
- 申请人： Aravanan Gurusami , Robert Chamberlin , Victor Jacek , Thomas Strong , Jeffrey Cox
- 申请人地址： NY New York
- 专利权人： North American Philips Corporation
- 当前专利权人： North American Philips Corporation
- 当前专利权人地址： NY New York
- 主分类号： H04N7/16
- IPC分类号： H04N7/16 ; H04N7/167 ; H04N21/2347 ; H04N21/266
摘要：
A device is disclosed for controlling access to cable television signals. Jamming oscillators are shifted in frequency, jamming multiple services each. The oscillators are shared between multiple subscriber ports, providing a cost effective, high security control system. A modular approach allows security to be added as additional capacity is required.
公开/授权文献
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