Method of delivering video information over a telecommunications

Details Method of delivering video information over a telecommunications Method of delivering video information over a telecommunications

1996-10-16

1999-12-28

Ton, Dang

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

370468, H04J 324

Patent

active

060090995

ABSTRACT:
A video telecommunications delivery network (10) provides video channels to a plurality of set top units (24). Each set top unit sends a video channel request to an associated cell multiplexing unit (20). If the video channel is available, the cell multiplexing unit (20) provides the video channel to the set top unit (22). If the requested video channel is not available, the cell multiplexing unit (20) passes the request to an associated cell routing unit (18). The cell routing unit (18) provides the requested video channel to the set top unit (22) according to availability. If unavailable, cell routing unit 18 provides the video channel request to a digital multicast bank (16). Digital multicast bank (16) delivers the requested video channel if available, otherwise the video channel request is routed to a video information provider (12) through an asynchronous transfer mode (ATM) switch (14). The video information provider (12) delivers the requested video channel to the digital multi-cast bank (16) through the ATM switch (14) for ultimate delivery to a video subscriber at the set top box.

REFERENCES:
patent: 5345558 (1994-09-01), Opher et al.
patent: 5473598 (1995-12-01), Takatori et al.
patent: 5519707 (1996-05-01), Subramanian et al.
patent: 5539884 (1996-07-01), Rebrock
patent: 5673265 (1997-09-01), Gupta et al.
patent: 5745837 (1998-04-01), Fuhrmann
PCT Search Report, dated Dec. 2, 1997.
Chang, et al., "An Open-Systems Approach to Video on Demand," IEEE (May 1994), No. 5.

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