Television audience measuring system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 24, 1981
Grant Date -
N/A
app pub date -
Oct 30, 1978
filing date -
Jul 31, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus for television audience analysis comprising means for monitoring a television receiver, means responsive to a monitored signal for storing information representative of channel identification and of the time at which a channel is selected and at which the selection of a channel is terminated, and means for reading the stored information periodically.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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