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Location beacon database

DC
  • US 7,433,694 B2
  • Filed: 10/28/2005
  • Issued: 10/07/2008
  • Est. Priority Date: 10/29/2004
  • Status: Active Grant
First Claim
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1. A database of Wi-Fi access points for at least one target area having a radius on the order of tens of miles, said database being recorded in a computer-readable medium and including database records for substantially all Wi-Fi access points in the target area, each record including identification information for a corresponding Wi-Fi access point and calculated position information for the corresponding Wi-Fi access point, wherein said calculated position information is obtained from recording multiple readings of the Wi-Fi access point at different locations around the Wi-Fi access point so that the multiple readings avoid arterial bias in the calculated position information of the Wi-Fi access point, and wherein the database records for substantially all Wi-Fi access points in the target area provide reference symmetry within the target area.

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