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Status monitoring apparatus for car radio

  • US 5,896,554 A
  • Filed: 04/02/1997
  • Issued: 04/20/1999
  • Est. Priority Date: 12/02/1996
  • Status: Expired due to Term
First Claim
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1. An apparatus for monitoring the status of use of a car radio, said apparatus being mounted on a mobile vehicle adjacently to said car radio capable of being tuned one by one to a group of radio stations located in geographical districts including a target district to be covered by radio audience survey based on said status of use, said apparatus comprising:

  • a first means for detecting the state in which said vehicle is occupied at least by a driver and for measuring the length of time in which said car radio could be turned ON;

    a second means for inputting data identifying said driver and other individuals expected to use said vehicle;

    a third means for detecting the ON and OFF states of said car radio, thereby measuring the length of time in which said car radio was in the ON state;

    a fourth means for identifying a radio station to which said car radio is tuned;

    a fifth means for storing measurement data including data supplied from said first, second, third and fourth means;

    a sixth means for periodically transmitting said measurement data to a survey center through a radio link; and

    a seventh means for supplying power to all of said first, second, third, fourth, fifth and sixth means separately from a storage battery mounted on said vehicle for energizing engine starter thereof.

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