发明名称 |
Video distribution system for digital and analog subscribers |
摘要 |
A cable distribution system with distributed architecture that can accommodate both digital and analog subscribers. Each home has at least one Room Interface Unit (RIU), one for each television. There is a local service module associated with a group of RIUs (e.g., one for every ten RIUs). There is also a local headend in the vicinity. The local headend has a block of integrated tuner/receiver/decoders that can be controlled to tune in a selected video channel. The selected video channels and a group of standard channels are multiplexed and sent to the local service modules where a group of programmable converters (one for each RIU) place the channel selected by its corresponding RIU at a predetermined frequency. Each of the RIUs associated with a particular local service module receive the corresponding channel. Depending upon whether the subscriber has subscribed to digital or analog service, they will have either a digital or an analog RIU. The analog RIU may include a bandpass filter while the digital RIU may include one or more IRDs. Forward and return DOCSIS channels are also provided.
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申请公布号 |
US7690022(B2) |
申请公布日期 |
2010.03.30 |
申请号 |
US20030675415 |
申请日期 |
2003.09.30 |
申请人 |
BASAWAPATNA GANESH;BASAWAPATNA VARALAKSHMI |
发明人 |
BASAWAPATNA GANESH;BASAWAPATNA VARALAKSHMI |
分类号 |
H04N7/16;H04N7/10;H04N7/167;H04N7/173 |
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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