发明名称 |
Distributing DBS Content to Multiple Receivers Over a Single Coaxial Cable |
摘要 |
A satellite transponder switch (STS) maintains a table that maps set-top boxes (STBs) to carrier frequencies. The STS receives a first request from a first STB for a first transponder band and a second request from a second STB for a second transponder band. The STS receives contact from the first STB on a control channel upon power-up of the first STB and in response to the contact from the first STB, assigns a first carrier frequency to the first STB. The STS frequency shifts the first transponder band to a first carrier frequency assigned to the first STB and the second transponder band to a second carrier frequency assigned to the second STB. The STS outputs a signal that comprises the frequency-shifted first and second transponder bands to the first STB and the second STB. The frequency-shifted first and second transponder bands are separated by a separation band. A first carrier frequency of the signal is unique to the first STB and a second carrier frequency of the signal is unique to the second STB.
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申请公布号 |
US2010169938(A1) |
申请公布日期 |
2010.07.01 |
申请号 |
US20100723167 |
申请日期 |
2010.03.12 |
申请人 |
AT&T INTELLECTUAL PROPERTY I,L.P. |
发明人 |
NADARAJAH DINESH;ANSARI AHMAD C. |
分类号 |
H04N7/20;H04H20/63;H04H20/76;H04H40/90 |
主分类号 |
H04N7/20 |
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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