System and method for time division multiplexing of...

Details System and method for time division multiplexing of... System and method for time division multiplexing of...

2006-09-19

2006-09-19

Rao, Andy (Department: 2613)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240260

Reexamination Certificate

active

07110457

ABSTRACT:
A system and method for time division multiplexing multiple lower bandwidth signals into a high bandwidth signals such as a high-definition television signal. The invention provides an integrated transmission, distribution and routing signal format in which low-bandwidth signals are embedded in the active video and vertical blanking areas of a high-bandwidth signal. Data from the source data streams, including timing data, is formatted in packets, each packet comprising a plurality of channels. The packets are inserted into the high-bandwidth signal along with a header word providing a ‘data valid bit’ or ‘status bit’ for each of the channels, which identifies valid data words within the packet. The source data streams are accurately reconstituted by de-multiplexing according to header data specifying routing destination, stream ID, stream type, channel usage and stream clock reference for clock recovery at the receiving end.

REFERENCES:
patent: 5523795 (1996-06-01), Ueda
patent: 5589993 (1996-12-01), Naimpally
patent: 5757416 (1998-05-01), Birch et al.
patent: 6024164 (2000-02-01), Sorbel
patent: 6219357 (2001-04-01), Ishikawa
patent: 6438145 (2002-08-01), Movshovich et al.
patent: 0 855 820 (1998-07-01), None

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