Audience rating measuring system for television and video tape recorder
First Claim
1. An audience rating measuring system for a television receiver adapted for receiving a plurality of channels and a video tape recorder having a plurality of operation modes connected thereto and adapted for selectively receiving said channels, said system comprising:
- video tape recorder channel discrimination means for detecting the channels received by the video tape recorder;
video tape recorder operation mode discrimination means for detecting the operation modes of the video tape recorder; and
television channel discrimination means for detecting the channels received by the television receiver;
said audience measuring system detecting the modes of the video tape recorder and the television receiver when used in combination.
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Accused Products
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.
140 Citations
6 Claims
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1. An audience rating measuring system for a television receiver adapted for receiving a plurality of channels and a video tape recorder having a plurality of operation modes connected thereto and adapted for selectively receiving said channels, said system comprising:
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video tape recorder channel discrimination means for detecting the channels received by the video tape recorder; video tape recorder operation mode discrimination means for detecting the operation modes of the video tape recorder; and television channel discrimination means for detecting the channels received by the television receiver; said audience measuring system detecting the modes of the video tape recorder and the television receiver when used in combination. - View Dependent Claims (2, 3, 4, 5)
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6. Apparatus for determining the operating state of a video tape recorder having erase signals and a reception channel and further having OFF, playback and recording modes of operation comprising a power ON/OFF detection means for detecting the power-on of the video tape recorder, erase signal detection means for detecting the erase signals of said video tape recorder and channel discrimination means for detecting the reception channel of said video tape recorder;
- and logic means operating on the detection outputs of said first power ON/OFF detection means, said erase signal detection means and said channel discrimination means for determining in which of the OFF, playback and recording modes the video tape recorder is operating.
Specification