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Motor vehicle audio information system

  • US 4,190,819 A
  • Filed: 01/31/1977
  • Issued: 02/26/1980
  • Est. Priority Date: 01/31/1977
  • Status: Expired due to Term
First Claim
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1. A compact audio information system for connection to a motor vehicle including a tape recorder for delivering messages in a sequential order at predetermined intervals related to the distance traveled by the motor vehicle, comprising:

  • means responsive to vehicle movement for generating an output pulse train proportional to the distance traveled by the vehicle; and

    means connected to an output of the generating means including a pulse memory for accumulating the pulse train, a programmable memory for storing preselected distance data, and means for comparing the accumulated pulse train with the stored distance data for energizing the tape recorder to deliver one of the sequential messages every time the incoming accumulated pulse train in the pulse memory is approximately equal to the addressed distance data in the programmable memory;

    means connected to a first output of the energizing means and to an input of the tape recorder and responsive to a signal at the first output of the energizing means for recording a tone signal of a predetermined frequency on the tape;

    means for sensing the tone signal connected to an output of the tape recorder and connected to an input of the energizing means whereby the tone signal acts to separate the sequential messages from one another and to stop the playback of the tape recorder when the tone signal is sensed; and

    wherein the tape includes a format comprising a first distance data, the tone signal, a first message, a second distance data, the tone signal, a second message and so on in that order until the nth message on the tape is reached followed by the tone signal for stopping the playback of the tape recorder.

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