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Audio Information Apparatus for Providing Position Information.

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Patent, FIled 5 Dec 94, patented 3 Sep 96,

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An audio information apparatus for providing position information as to the location of a target comprising a global positioning system receiver affixed to the target for generating a string of fifty nine ASCII characters representing the latitude and longitude spherical coordinates of the global positioning receiver affixed to the target. The ASCII characters are supplied to a microprocessor, which in response to the ASCII characters, formulates a position message indicating the current location of the global positioning system receiver. A pair of voice recorderplayback circuits, coupled to the microprocessor, have a message table which includes 27 messages or words which when assembled in a predetermined sequence form a longitude and latitude coordinate position message. When the voice recorderplayback circuits are in a message cueing mode, the microprocessor provides a predetermined number of active low chip enable pulses to a selected one of the pair of voice recorderplayback circuits to select the desired word from the table. The microprocessor then disables the message cueing mode which, in turn, enables an audio amplifier of the selected one of the voice recorderplayback circuits. When the microprocessor provides a subsequent chip enable pulse the message is output from the voice recorderplayback circuit to a transmitter for transmission to a ground station. The microprocessor continues this process of utilizing the message cueing mode followed by audio playback addressing mode to output each word of the longitude and latitude coordinate position message from the voice recorderplayback circuits to the transmitter.

Subject Categories:

  • Navigation and Guidance
  • Recording and Playback Devices

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