System for controlling communications on a cable television netw

Details System for controlling communications on a cable television netw System for controlling communications on a cable television netw

1984-05-31

1987-08-04

George, Keith E.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358349, 455 5, H04N 710, H04N 714, H04N 7173

Patent

active

046849807

ABSTRACT:
A system for controlling a cable television network includes a headend, a plurality of addressable external control units having subscriber converters located off the subscribers' premises, and one or more subscriber devices located on the subscriber premises for communicating with associated external control units. The headend can selectively and rapidly poll the external control units for information on a general or on a priority basis. Information is transmitted to the headend from the external control units on any of a plurality of reverse communication channels under control of the head end. External control units use a two-part polling scheme to poll a plurality of associated drop cables, and individual subscriber devices attached to the drop cables. The polling rapidly identifies subscriber devices desiring to communicate with the external control unit.

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