05303393 is referenced by 337 patents and cites 25 patents.

A radio response system including a broadcast station, a satellite relay, a processing center, and a plurality of user terminals. Each user terminal has a broadcast receiver, a communications interface device, a controller and a data transmitter. The broadcast station broadcasts a program signal. The broadcast receiver receives the program signal. The communications interface device communicates the program signal to a user. The controller generates a user-data signal from identification information transmitted in connection with the program signal and/or timing, location and frequency information needed for identifying the program signal, and a user-input signal generated in response to the program signal. The data transmitter transmits the user-data signal at a carrier frequency as a transmitted-data signal. The satellite relays the user-data signal to the processing center.

Title
Integrated radio satellite response system and method
Application Number
607877
Publication Number
5303393
Application Date
April 12, 1991
Publication Date
April 12, 1994
Inventor
Theodore R Harper
Long Beach
CA, US
Gary Noreen
Pasadena
CA, US
Agent
David Newman & Associates
Assignee
Radio Satellite Corporation
CA, US
IPC
H04H 1/00
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