Interactive video distribution systems – Video distribution system with upstream communication – Having link to external network
Reexamination Certificate
2005-04-05
2005-04-05
Miller, John (Department: 2614)
Interactive video distribution systems
Video distribution system with upstream communication
Having link to external network
C725S107000, C725S121000, C725S124000, C725S125000, C725S127000, C725S130000, C455S068000, C455S522000
Reexamination Certificate
active
06877166
ABSTRACT:
A technique is disclosed for selectively adjusting the power and/or frequency of cable modems without relying solely on the most recent measurement of these values to determine whether a change is necessary. Rather, it considers multiple recent measurements and from these makes its assessment. In one approach, the technique employs an average of the recent measurements to determine whether a change in power or frequency is necessary. There are actually at least three determinations that can make use of multiple recent measurements. These include (1) determining whether the signals are fluctuating to an extent that requires a special adjustment technique, (2) determining whether an adjustment is necessary (using the special technique), and (3) determining how large of an adjustment is necessary.
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Millet Mark E.
Nguyen Son D.
Roeck Guenter E.
Beyer Weaver & Thomas LLP
Cisco Technology Inc.
Miller John
Shang Annan Q
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