Interactive video distribution systems – Video distribution system with upstream communication – Remote testing of cable system
Reexamination Certificate
2006-04-18
2006-04-18
Miller, John (Department: 2614)
Interactive video distribution systems
Video distribution system with upstream communication
Remote testing of cable system
C725S111000, C725S131000
Reexamination Certificate
active
07032238
ABSTRACT:
A terminal is coupled to a video distribution network headend, and transmits upstream packets to the headend. Each upstream packet has a transmission power. The terminal receives a downstream packet from the headend, indicating a change in power. The terminal calculates an adjusted transmission power, based on the change in power specified in the downstream packet, and sets the transmission power of the upstream packets to the adjusted transmission power. The headend can be coupled to one or more terminals. The headend receives upstream packets from the terminal. The headend senses a received transmission power of each packet, and calculates a weighted average transmission power based on the received transmission powers. The headend calculates a change in transmission power based on the weighted average and a predetermined set point. The headend transmits a downstream packet to the terminal, indicating the change in power.
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Blackmon Whitney
Booth Richard L.
Coonan Christopher
Parnell James Winton
Wang Charles Chuanming
Miller John
Parry Chris
Patterson & Sheridan LLP
Sedna Patent Services, LLC
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