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Mobile device system and mobile device

  • US 20080081649A1
  • Filed: 09/24/2007
  • Published: 04/03/2008
  • Est. Priority Date: 09/28/2006
  • Status: Active Grant
First Claim
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1. A mobile device system comprising:

  • a plurality of mobile devices, to each of which unique identification information is assigned, wherein each mobile device includes a location-information acquisition unit configured to acquire location information, a communication unit configured to communicate with other mobile devices, and a group registration unit, wherein, in each mobile device, the communication unit links location information acquired by the location-information acquisition unit of the mobile device and the identification information of the mobile device, sends the information to other mobile devices, and receives from the other mobile devices location information of the other mobile devices and identification information linked to the location information of the other mobile devices, and wherein, in each mobile device, the group registration unit detects other mobile devices located within a predetermined range of the mobile device on the basis of the location information of the other mobile devices received by the communication unit and the location information of the mobile device and registers the identification information of the detected other mobile devices as a group.

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