Title: System for conducting a television audience survey

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.

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Inventors: Miyake, Nobuo (Yokohama, JA)

Application Number: 520049
Filing Date: 1974-11-01
Publication_date: 1976-03-30
Assignee: Totsu Co. Ltd. (Tokyo, JA)
Primary Class(es): 725/14
Other Classes:
US Patent Ref:

2674512	Apr, 1956	Bogert	325/31.
3483327	Dec, 1969	Schwartz	178/DIG.
3524015	Aug, 1970	Campbell	178/6.
3676580	Jul, 1972	Beck	178/DIG.
3733430	May, 1973	Thompson	178/DIG.
3757035	Sep, 1973	Sullivan	178/6.

Other Refs:
Primary Examiner: Britton, Howard W.
Assistant Examiner: Masinick, Michael A.
Attorney: Hinderstein; Philip M.