Method and configuration for remote access control
First Claim
Patent Images
1. A method for remote access control, which comprises:
- providing a configuration having a transceiver unit for transmitting an interrogation signal and for receiving access code signals, and having an evaluation unit connected to the transceiver unit, for evaluating received access code signals and for outputting an access enable or inhibit signal in dependence on an evaluation result, and having a number of access code transmitters for receiving the interrogation signal and for transmitting a respective specific access code signal in reaction to receiving the interrogation signal;
outputting with the transceiver unit an interrogation signal configured to activate all the access code transmitters at the same time;
transmitting with each of the access code transmitters receiving the interrogation signal a respectively specific access code signal, substantially simultaneously; and
receiving the access code signals with the transceiver unit substantially simultaneously, and separating the access code signals on a basis of specific spread sequences applied to the signals.
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Abstract
Remote access (for example to a motor vehicle) is controlled with a configuration having a transceiver unit. The transceiver unit outputs an interrogation signal which activates all available access code transmitters at the same time, and all the access code transmitters which receive this interrogation signal then transmit their specific access code signals, essentially at the same time. The transceiver unit separates the access code signals received at the same time on the basis of a characteristic applied to them.
69 Citations
19 Claims
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1. A method for remote access control, which comprises:
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providing a configuration having a transceiver unit for transmitting an interrogation signal and for receiving access code signals, and having an evaluation unit connected to the transceiver unit, for evaluating received access code signals and for outputting an access enable or inhibit signal in dependence on an evaluation result, and having a number of access code transmitters for receiving the interrogation signal and for transmitting a respective specific access code signal in reaction to receiving the interrogation signal;
outputting with the transceiver unit an interrogation signal configured to activate all the access code transmitters at the same time;
transmitting with each of the access code transmitters receiving the interrogation signal a respectively specific access code signal, substantially simultaneously; and
receiving the access code signals with the transceiver unit substantially simultaneously, and separating the access code signals on a basis of specific spread sequences applied to the signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 10)
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8. A remote access control configuration, comprising:
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a transceiver unit having an interrogation signal transmitter for generating and transmitting an interrogation signal, and a receiver for receiving access code signals, said receiver having at least one section with a device for parallel processing of a plurality of received access code signals in accordance with specific spread sequences superimposed on the access code signals;
a plurality of access code transmitters each having a receiving and activation unit for receiving the interrogation signal and for controlling an output of the respective access code signal, a memory for storing specific spread sequences to be superimposed on the access code, and a transmission stage including a processing unit for superimposing the specific spread sequences to the access code. - View Dependent Claims (9, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification