METHOD AND DEVICE FOR ISSUING AN ACCESS AUTHORIZATION
0 Assignments
0 Petitions
Accused Products
Abstract
A method and a device for issuing an authorization for access to a secured area, particularly a building, a room, a vehicle, a computer system or the like, or for starting a machine, a vehicle, a computer or the like, having a monitoring unit comprising a transmitter, a receiver, and an evaluation device, and having a key, a key card or similar, referred to as a key in short below, having a transmitter, a receiver and an electronic device. A permissible position and/or a permissible distance between the transmitter of the monitoring unit to a permissible key is captured for issuing an authorization, wherein the transmitter of the monitoring unit transmits signals and the key transmits response signals back to the monitoring unit. The permissible position and/or the permissible distance of the key are determined from the signals of the transmitter received by the key, wherein a signal strength of said signals is evaluated in various directions and/or angles. A monitoring unit and a key are suitable for use in a device according to the preceding claims.
-
Citations
50 Claims
-
1-30. -30. (canceled)
-
31. An access authorization system comprising:
-
a monitoring unit comprising; a first transmitter to transmit first signals at a first frequency, and a first receiver to receive a response signal; and a key comprising; a second transmitter to transmit the response signal to the monitoring unit at a second frequency, a second receiver to receive the first signals, and an electronic device configured to determine signal strengths of the first signals in at least one direction; and an evaluation device configured to perform a fingerprinting procedure to validate the key, the fingerprinting procedure comprises determining at least one of a distance and a relative position between the key and the monitoring unit based on the response signal. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39)
-
-
40. A method for accessing an authorization system, the method comprising:
-
transmitting via a first transmitter first signals at a first frequency from a monitoring unit to a first receiver that is designed to receive a response signal; transmitter via a second transmitter the response signal to the monitoring unit at a second frequency; determining signal strengths of the first signal in at least one direction; and performing a fingerprinting procedure to validate a key via an electronic device, the fingerprinting procedure comprising determining at least one of a distance and a relative position between the key and the monitoring unit based on the response signal. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
-
Specification