System for the locking and/or unlocking of a security device
First Claim
1. A system for the locking and/or unlocking of a security device, particularly an automobile locking device, comprisinga transmitting device for transmitting coded data;
- anda receiving device for receiving the coded data;
first storage means in said transmitting device for storing data to be transmitted;
second storage means in said receiving device for storing codes; and
a comparator for comparing the data sent by said transmitting device with data stored in said second storage means, said receiving device including means for generating a control signal to activate the security device in the event that the data at said comparator is in agreement; and
whereinsaid generating means comprises a signal generator for generating a plurality of further coded data suitable for storage in said first and said second storage means and sendable by the receiving device; and
the further coded data comprises at least one random number and an algorithm, there being computers located in said transmitting device and in said receiving device for modifying the at least one random number in response to operation of said security device enabling the random number to be newly selectable for each locking operation;
said system further comprisingsending means located in said receiving device for sending a random number from said signal generator to said transmitting device; and
accepting means located in said transmitting device for accepting the random number sent by the sending means, the computer of said transmitting device being operatively coupled to said accepting means for receiving the random number from the accepting means to provide the coded data to be transmitted by the transmitting device, the coded data transmitted by the transmitting device to the receiving device being based on a previous sending of the random number from the sending means of the receiving device to the accepting means of the transmitting device.
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Accused Products
Abstract
A system for the locking and/or unlocking of a security device, particularly an automobile locking device, comprising a transmitting device for transmitting coded data recording, a receiving device for receiving the coded data recording, a transmitter-end storage and a receiver-end storage for storing codes and a comparator for comparing the received data recording with the stored data recording, a control signal being adapted to be given off to the security device from the receiving device in the event that said data agree. The receiving device has a signal generator to produce several further coded data which are stored in the transmitting device and in the receiving device and can be employed upon the subsequent use of the system. The further coded data recording may be random number and/or algorithms for changing the random numbers. The production of the further coded data recording is effected preferably upon actuation of the ignition lock.
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Citations
15 Claims
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1. A system for the locking and/or unlocking of a security device, particularly an automobile locking device, comprising
a transmitting device for transmitting coded data; - and
a receiving device for receiving the coded data; first storage means in said transmitting device for storing data to be transmitted; second storage means in said receiving device for storing codes; and a comparator for comparing the data sent by said transmitting device with data stored in said second storage means, said receiving device including means for generating a control signal to activate the security device in the event that the data at said comparator is in agreement; and
whereinsaid generating means comprises a signal generator for generating a plurality of further coded data suitable for storage in said first and said second storage means and sendable by the receiving device; and the further coded data comprises at least one random number and an algorithm, there being computers located in said transmitting device and in said receiving device for modifying the at least one random number in response to operation of said security device enabling the random number to be newly selectable for each locking operation;
said system further comprisingsending means located in said receiving device for sending a random number from said signal generator to said transmitting device; and accepting means located in said transmitting device for accepting the random number sent by the sending means, the computer of said transmitting device being operatively coupled to said accepting means for receiving the random number from the accepting means to provide the coded data to be transmitted by the transmitting device, the coded data transmitted by the transmitting device to the receiving device being based on a previous sending of the random number from the sending means of the receiving device to the accepting means of the transmitting device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method, in a system for the locking and/or unlocking of a security device, particularly an automobile locking device, comprising
a transmitting device, separate from the security device, for transmitting coded data; - and
a receiving device, coupled to the security device, for receiving the coded data; first storage means in said transmitting device for storing data to be transmitted; second storage means in said receiving device for storing codes; and a comparator for comparing the data sent by said transmitting device with data stored in said second storage means, said receiving device including means for generating a control signal to activate the security device in the event that the data at said comparator is in agreement; and
whereinsaid generating means comprises a signal generator for generating a plurality of further coded data suitable for storage in said first and said second storage means and sendable by the receiving device; and the further coded data comprises at least one random number and an algorithm, there being computers located in said transmitting device and said receiving device for modifying the at least one random number; the method of securely activating a lock, comprising the steps of generating a set of random numbers at the receiving device; sending a random number from the receiving device to the transmitting device; sensing operation of a lock at the receiving device; selecting another of said random numbers of said set upon each operation of the lock by a computer at the receiving device; sending the random number to the transmitting device; updating a code with said another random number at the computers of both the transmitting and the receiving devices; and transmitting the code from the transmitting device to the receiving device. - View Dependent Claims (14, 15)
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Specification