Multi-channel broadband content distribution system
US7353004B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2002 |
| Grant date | Apr 1, 2008 |
| Priority date | — |
| Expiry date | Jun 14, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/14
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The system of a content head end of a distribution system includes a program multiplexer, a multi-channel modulating module, a channel multiplexer, a digital-to-analog converter and a frequency block-up converter, all arranged in a sequential configuration. Packets representing respective content programs are fed to the program multiplexer. The program multiplexer multiplexes the packets into an output queue. Packets from the output queue are then fed to the multi-channel modulating module. The multi-channel modulating module receives the packets and routes them to various modulators representing corresponding RF channels. The various modulators then modulate the respective packets to generate corresponding RF signals. These RF signals are then multiplexed by the channel multiplexer into a multi-channel RF signal. The multi-channel RF signal is then forwarded to the digital-to-analog converter for conversion into an analog, multi-channel RF signal. The frequency block-up converter then takes the analog multi-channel RF signal and shifts its to a higher frequency band for transmission to one or more customer premises equipment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.