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Apparatus and method for providing indoor location, position, or tracking of a mobile computer using building information

  • US 8,174,931 B2
  • Filed: 10/08/2010
  • Issued: 05/08/2012
  • Est. Priority Date: 10/08/2010
  • Status: Active Grant
First Claim
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1. A mobile computer comprising:

  • circuitry configured to transmit a first and second ultrasound signal;

    circuitry configured to receive a reflection of the first and second ultrasound signal off a first and second wall of a room in a building where the mobile computer is present;

    circuitry configured to determine an orientation of the mobile computer in the room;

    circuitry configured to determine a length and width of the room based on the reflection of the first and second ultrasound signal off the first and second wall and the orientation; and

    circuitry configured to determine a location of the room within the building where the mobile computer is currently located based on comparison of the length and width of the room to room layout information of the building stored in the mobile computer.

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