Audience rating measuring system for television and video tape recorder
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 4, 1986
Grant Date -
N/A
app pub date -
Apr 20, 1984
filing date -
Apr 22, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to an audience rating measuring system for a television and a video tape recorder and provides an audience rating measuring system which can give accurate audience data under various conditions, such as when a television and a video tape recorder are used in combination, that can not be measured by the conventional audience rating measuring systems in general use. The audience rating measuring system of the invention comprises means for video tape recorder channel discrimination, video tape recorder operation mode discrimination, and television channel discrimination.
First Claim
Family
International Classification(s)
Cited Art Landscape
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