Lewis D Dumbauld

48233862, Apr 18, 1989

May 27, 1987

7/057675

Lewis D. Dumbauld - Phoenix AZ
Gilbert L. Tash - San Clemente CA

Texscan Corporation - Scottsdale AZ

H04N 7167

380 13

An addressable cable television system includes a transmission cable for transmitting a plurality of television signals driven onto the cable from a head end thereof and a plurality of multiple subscriber controllers coupled to the cable for controlling reception of television signals by a plurality of subscribers associated with each of the multiple subscriber controllers. Each of the multiple subscriber controllers includes a plurality of programmable frequency converters, each of which is coupled by a drop cable to the antenna of a television receiver within the subscriber's home. Authorization signals are transmitted from the head end of the cable to the plurality of multiple subscriber controllers for indicating which of the plurality of television signals a particular subscriber is authorized to receive. Each subscriber is provided with channel request circuitry for transmitting a channel request over the drop cable to the associated multiple subscriber controller. Upon receiving a request from a subscriber for access to a television signal, the associated controller compares the channel requested to those channels for which the subscriber is authorized to receive.

44751230, Oct 2, 1984

Apr 2, 1981

6/250214

Lewis D. Dumbauld - Phoenix AZ
Gilbert L. Tash - San Clemente CA

Theta-Com., Division of Texscan - Indianapolis IN

H04N 716
H04K 100

358114

An addressable cable television system includes a transmission cable for transmitting a plurality of television signals driven onto the cable from a head end thereof and a plurality of multiple subscriber controllers coupled to the cable for controlling reception of television signals by a plurality of subscribers associated with each of the multiple subscriber controllers. Each of the multiple subscriber controllers includes a plurality of programmable frequency converters, each of which is coupled by a drop cable to the antenna of a television receiver within the subscriber's home. Authorization signals are transmitted from the head end of the cable to the plurality of multiple subscriber controllers for indicating which of the plurality of television signals a particular subscriber is authorized to receive. Each subscriber is provided with channel request circuitry for transmitting a channel request over the drop cable to the associated multiple subscriber controller. Upon receiving a request from a subscriber for access to a television signal, the associated controller compares the channel requested to those channels for which the subscriber is authorized to receive.