×

Device for remote location of an object and method for operating the device

  • US 6,901,263 B2
  • Filed: 12/01/2000
  • Issued: 05/31/2005
  • Est. Priority Date: 12/01/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for operating a locating device for remote location of an object, where the locating device comprises a mobile communication unit and is arranged to be placed together with the object, where data concerning the communication unit'"'"'s position are determined and registered by means of existing infrastructure in a cellular network of which the communication unit forms a part when it is activated, and where the communication unit can be activated to a standby mode and deactivated to a sleep mode, characterized in thatthe communication unit is activated and deactivated depending on a time-variable signal, generated in the locating device, thus reducing the communication unit'"'"'s average power consumption, the time-variable signal is influenced by the locating device'"'"'s acceleration, the communication unit is activated when the said signal indicates that the acceleration exceeds a first threshold value, or when the signal indicates that the acceleration has been less than a second threshold value in a first period, preferably in the range 1 to 30 minutes, and that the said threshold values and/or periods can be altered as a response to a message received by the communication unit.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×