发明名称 |
INTERDICTION METHOD AND APPARATUS WITH VARIABLE DW |
摘要 |
A cable television interdiction apparatus (130) comprises a microprocessor actuation and control means (300) for actuating and controlling one or more frequency agile voltage controlled oscillators (341-344). The voltage controlled oscillators (341-344) selectively jam only unauthorized premium programming transmitted from a headend (100) to a particular subscriber. The method of interdiction comprises the steps of generating and storing voltage control words for operating the oscillators (341-344) consistent with a headend selected jamming factor for a particular channel to be jammed and addressably transmitted and stored premium programming authorization data. |
申请公布号 |
AU7347491(A) |
申请公布日期 |
1991.09.03 |
申请号 |
AU19910073474 |
申请日期 |
1991.02.06 |
申请人 |
SCIENTIFIC-ATLANTA, INC. |
发明人 |
LAMAR E. WEST JR.;DAVID P. DURAND;MELVIN PAULICK;ANTHONY PRIMIANO |
分类号 |
H04N7/16 |
主分类号 |
H04N7/16 |
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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