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Digital traffic news evaluation method

  • US 5,065,452 A
  • Filed: 12/07/1989
  • Issued: 11/12/1991
  • Est. Priority Date: 06/18/1988
  • Status: Expired due to Fees
First Claim
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1. A method for evaluating traffic announcements received in digitally encoded form in a data packet forming part of a broadcast radio signal a complete cycle of reports and data being repeated periodically,comprising the steps ofdecoding said data packet from said broadcast signal;

  • evaluating said data packet to generate elements of traffic announcements;

    storing said traffic announcements in a memory (14);

    said evaluating step including identification and storage of a variable-value check number, contained in a predesignated portion of said data packet, which indicates a total number of reports which are being broadcast during a current cycle of data, and maintenance of a running count of reports actually received in said cycle;

    and comparing, at an end of each cycle, said stored variable-value check number with said running count of reports actually received,thereby permitting checking, of traffic announcement data received, for omissions due to poor transmission conditions.

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