System for conducting a television audience survey

Details System for conducting a television audience survey System for conducting a television audience survey

1974-11-01

1976-03-30

Britton, Howard W.

Telegraphy

Systems

Simplex-reversing periodic

178DIG13, 375 31, H04N 702

Patent

active

039476243

ABSTRACT:
A method and apparatus for conducting a television audience survey in which a channel switch position detector and a television receiver on/off detector is attached to each television receiver in a sampled household and the information obtained from the channel switch position detectors is transmitted as a pulse train signal via a transmission media to a survey center. At the survey center, the pulse train signal is demodulated to recover the transmitted information which is processed in a computer as statistical data.

REFERENCES:
patent: 2674512 (1956-04-01), Bogert
patent: 3483327 (1969-12-01), Schwartz
patent: 3524015 (1970-08-01), Campbell
patent: 3676580 (1972-07-01), Beck
patent: 3733430 (1973-05-01), Thompson
patent: 3757035 (1973-09-01), Sullivan

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