Interactive video on demand network

Details Interactive video on demand network Interactive video on demand network

H - Electricity

04

N

H04N 7/173 (2006.01)

Patent

CA 2135990

- 30 - ABSTRACT INTERACTIVE VIDEO ON DEMAND NETWORK The interactive video on demand network is intended for a plurality of user stations (US11, ..., USNM) and includes a video server (VS) producing a plurality of delayed instances of a video signal for transmission to the user stations, and a buffer means (IB1, ..., IBN) to an input of which a selected one of these instances is applied and at an output of which a version of the video signal as requested by a said user station is provided. The buffer means generates the requested version under control of control signals issued by the user stations and selects the instance based on that requested version. The buffer means (IB1, ... IBN) is able to transmit a load request signal to the video server (VS) which in response thereat applies at least part of the video signal to the input of the buffer means for storage therein, at a rate substantially higher than real time. In this way the buffer means always contains at least that part of the video signal needed to provide to the user station the version it has requested for and to provide functions such as pause, (fast) forward, (fast) rewind and resume.

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