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Identification system for verifying an authorization for access to an object, or use of an object, in particular a motor vehicle

  • US 20050038574A1
  • Filed: 09/10/2004
  • Published: 02/17/2005
  • Est. Priority Date: 03/21/2002
  • Status: Abandoned Application
First Claim
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1. An identification system for verifying an authorization for access to an object, or for the use of an object, in particular of a motor vehicle, comprising:

  • a mobile code transmitter which is carried by a user and which, when triggered, sends out a response signal containing code information specific to said code transmitter, an object-side receive unit which is connected to an evaluation unit in which the code information contained in a received response signal is compared with reference code information, and a distance measuring device and a level measuring device both disposed on the object side which determine the position of the code transmitter from the received response signal, wherein the level measuring device determines the field strength of a received response signal or the difference in field strengths of different received response signals and determines a distance between code transmitter and receive unit by comparison with reference values, and the evaluation unit has a weighting device which weights the measured levels and distances with weighting factors and determines therefrom the position of the responding code transmitter or of all the responding code transmitters.

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