Importance

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Abstract

In a video on demand system utilizing asymmetric digital subscriber line (ADSL) interfaces, a plurality of video channels are arranged at a central office into ADSL format and, together with a provisioning channel, are multiplexed into a composite spectrum. This composite spectrum is then transmitted to an intermediate distribution point, remote from the central office, over analog optical fiber. The composite spectrum is split and applied individually to channel selection mixers associated with the subscribers serviced by the intermediate distribution point. Telephone signals (POTS) are combined at the intermediate distribution point into the ADSL signal and transmitted with the video, to an ADSL multiplexer/demultiplexer at the subscriber's location. In the reverse direction, channel direction/change signals are split from the composite received from the subscriber's location at the intermediate distribution point and utilized to control channel selection. Program request information is forwarded back over the optical fiber link to the central office where it is extracted at the ADSL individual channel units for use in providing video on demand service.

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First Claim