Apparatus for detecting recorded data in a video tape recorder for audience rating purposes
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United States of America Patent
Stats
-
Dec 20, 1988
Grant Date -
N/A
app pub date -
Jun 27, 1986
filing date -
Sep 3, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system is disclosed for detecting the recording data of a video tape recorder, which is enabled to detect data concerning the time and channel a program played back was recorded at and through, by adding both calendar data such as the date and time and channel data indicating a channel to be recorded in the recording operation of the video tape recorder and by extracting the above-specified data in the playback operation.
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