Interactive video distribution systems – Video distribution system with upstream communication – Receiver
Reexamination Certificate
2006-05-09
2006-05-09
Srivastava, Vivek (Department: 2617)
Interactive video distribution systems
Video distribution system with upstream communication
Receiver
C725S151000
Reexamination Certificate
active
07043750
ABSTRACT:
A circuit arrangement for combining signals in a cable set-top box or television receiver. An out-of-band upstream amplifier and a cable modem upstream amplifier have their outputs combined at a combiner before being passed to the cable through a diplexer. The output of the diplexer provides incoming signals for an in-band tuner, a cable modem tuner and an out-of-band tuner that can be passed through a low noise amplifier before passing through a three-way splitter to divide the signals to each of the tuners.
REFERENCES:
patent: 4520507 (1985-05-01), Moon
patent: 5898900 (1999-04-01), Richter et al.
patent: 6305019 (2001-10-01), Dyer et al.
patent: 6343315 (2002-01-01), Stoel et al.
patent: 6363262 (2002-03-01), McNicol
patent: 6757909 (2004-06-01), Maruo et al.
Miller Jerry A.
Miller Patent Services
Sheleheda James
Sony Corporation
Sony Electronics Inc.
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