04816904 is referenced by 408 patents and cites 11 patents.

A data gathering system includes a plurality of remote units which are controlled from a central location. Each of the remote units is attached to a television receiver which is generally but not necessarily attached to a cable system. Each of the remote units can function to determine which of several TV modes is in use as well as to store TV channel selector data, data from an optical input device, and/or data input by viewers representative of the composition of the viewing audience. The data is stored for either later collection by a portable data collector, or for direct transmission via telephone to the central location. A video message for a TV viewer, such as a survey, may be transmitted from the central location and stored at the remote units, for later display on the TV receiver associated with the remote units. Substitution of alternate programming information may also be achieved by the central control point on selected of the remote units.

Title
Television and market research data collection system and method
Application Number
502654
Publication Number
4816904
Application Date
April 10, 1987
Publication Date
March 28, 1989
Inventor
Bohdan Stryzak
Bridge Water
NJ, US
Joseph A Cullity
Jersey City
NJ, US
Harold R Walker
Edison
NJ, US
Russell J Welsh
Toronto
CA
Rand B Nickerson
Scarborough
CA
Kenneth W Silvers
Frankfort
IL, US
William J McKenna
Barrington
IL, US
Agent
Irell & Manella
Assignee
Control Data Corporation
MN, US
IPC
H04H 9/00
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