Electronic access control device
DCFirst Claim
1. A battery powered access control device for accessing a safe comprising:
- a non-volatile memory containing an access code;
a circuit generating a wake-up signal in response to pressing a first key on a keypad used in entering an input code comprising the first key and at least one subsequent keypad entry;
a processor that is woke-up for a period of time in response to the wake-up signal, compares the input code with the access code, and generates a signal to open the safe if the input code matches the access code;
wherein the processor enters a sleep mode after the period of time, the sleep mode causing the processor to operate at a lower power consumption rate than when the processor is awake.
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Accused Products
Abstract
An electronic lock utilizes two microprocessors remote from each other for enhanced security. The first microprocessor is disposed close to an input device such as a keypad, and the second microprocessor is disposed close to the lock mechanism and well protected from external access. The first microprocessor transmits a communication code to the second microprocessor when it receives via the input device an access code that matches a preset access code. The second microprocessor opens the lock if the transmitted communication code matches a preset communication code. The dual-microprocessor arrangement is advantageously used in a voice controlled access control system and in a motorcycle ignition control system. The present invention further provides an electronic access control system which has a master electronic key having a preset number of access, and an electronic alarm system for a bicycle that has a remote control mounted in the helmet of the rider.
55 Citations
20 Claims
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1. A battery powered access control device for accessing a safe comprising:
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a non-volatile memory containing an access code; a circuit generating a wake-up signal in response to pressing a first key on a keypad used in entering an input code comprising the first key and at least one subsequent keypad entry; a processor that is woke-up for a period of time in response to the wake-up signal, compares the input code with the access code, and generates a signal to open the safe if the input code matches the access code; wherein the processor enters a sleep mode after the period of time, the sleep mode causing the processor to operate at a lower power consumption rate than when the processor is awake. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for accessing a safe comprising:
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storing an access code within a non-volatile memory; providing a wake-up signal in response to pressing a first key on a keypad used to enter an input code comprising the first key and at least one subsequent keypad entry; waking-up a microprocessor for a period of time in response to the wake-up signal; transmitting an input code to the microprocessor; comparing the input code with the access code during the period of time; activating a lock actuator to open the safe if the input code matches the access code; entering a sleep mode after the period of time, wherein during the sleep mode the microprocessor operates at a lower power consumption rate than when the microprocessor is awake.
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10. A battery-powered electronic access control device for accessing a safe comprising:
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a keypad having a plurality of keys and a program key mounted thereon; a microprocessor-based control circuit comprising a microprocessor comprising a non-volatile memory storing a permanent access code, the microprocessor being programmed to enter a sleep-mode to conserve battery power between operations and to awaken from a sleep mode upon pressing a first key on the keypad used for entering an input code comprising the first key and at least one subsequent keypad entry on the keypad; the microprocessor-based control circuit operatively connected to the keypad for receiving user inputs entered through pressing the keys of the keypad, the microprocessor being configured to switch from sleep-mode into an operation mode in response to entering the input code, receive an input key code through the keypad, compare the input key code with the permanent access code in the non-volatile memory and activate the lock actuator if the input key code matches the stored access code, the microprocessor being configured to enter a code programming operation in response to pressing of the program key, receive an input key code through the keypad in response to detecting the pressing of the program key, and store the input key code in the non-volatile memory as the access code for the access control device. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. An electronic access control device comprising:
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a microprocessor-based control circuit comprising a microprocessor and a non-volatile memory; and
,at least two communication ports operatively coupled to the control circuit, the first port receiving an input code to control a lock actuator, and the second port dedicated to reading an access code from the non-volatile memory upon the second port receiving a communication signal, wherein if the input code received by the first port matches the access code, then the lock actuator unlocks a lock.
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19. An electronic access control device comprising:
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a microprocessor-based control circuit comprising a microprocessor and a non-volatile memory; and
,at least two communication ports operatively coupled to the control circuit, the first port receiving an input code to control a lock actuator, and the second port dedicated to writing and reading an access code from the non-volatile memory, wherein if the input code received by the first port matches the access code, then the lock actuator unlocks a lock.
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20. A battery-powered electronic access control device comprising:
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a keypad having at least one row of keys mounted thereon, the keypad comprising a program key for pressing by a user to enter a user input; a microprocessor-based control circuit comprising a microprocessor and a non-volatile memory storing a permanent access code, the microprocessor comprising multiple inputs for receiving an interrupt signal, and the program key operatively connected to one of the multiple inputs, the microprocessor programmed to enter a sleep mode to conserve battery power between operations and to awaken from the sleep mode upon pressing a first key on a keypad used for entering an input code comprising the first key and at least one subsequent keypad entry; the microprocessor-based control circuit operatively connected to the keypad for receiving the user input, the microprocessor configured to switch from the sleep mode into an operation mode and to enter a code programming operation in response to pressing of the program key, receive a first key code in response to detecting the pressing of the program key, compare the first key code with the permanent access code, receive a second key code, and store the second key code in the volatile memory as an access code for the access control device if the first key code matches the permanent access code in the non-volatile memory.
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Specification