EP0077101A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Electronic lock-key system
Assignee: Individual
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Filing: 1982-10-08
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Granted: —
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Expires: 2002-10-08
Abstract
Abstract The invention concerns a lock and related key of electronic type, which bases the unlocking of the lock on the matching of codes memorized in the lock and in the key, making It possible for one key to unlock a considerable number of pre-selected locks.
Inventors
- 👤 Antonino Invernizzi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 19:12
CPC Classifications
G; G07; G07C; G07C9/00; G07C9/00174; G07C9/00309; G07C2009/00753; G07C2009/00761
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
212 words
A lock comprising a movable locking element controlled to take up an unlocking position by an actuator operating by effect of an electrical pulse, characterized by the fact that it further comprises a first indelible memory storing a code, a second indelible memory not accessible from the outside and containing the result of the execution of an algorithm on the code of the lock, a third service memory adapted to receive asinformation a code comparable with the code stored in the second memory, means being provided for comparing the codes stored in the second and the third memory and, if they match, for piloting a switch which connects said actuator to a pulse generator, the key for said lock comprising a memory in which is stored at least one code identical to the one stored in the first memory of a lock and the related algorithm, a microprocessor and an interface of interconnection with the lock; so that, after connection of key with lock, the microprocessor compares the code stored in the first memory of the lock with the code stored in the memory of the key and, if they match , processes the code according to the same algorithm as aforesaid and relays it to the third memory of the lock.
Claim 2
Dependent Claim
212 words
A lock comprising a movable locking element controlled to take up an unlocking position by an actuator operating by effect of an electrical pulse, characterized by the fact that it further comprises a first indelible memory storing a code, a second indelible memory not accessible from the outside and containing the result of the execution of an algorithm on the code of the lock, a third service memory adapted to receive asinformation a code comparable with the code stored in the second memory, means being provided for comparing the codes stored in the second and the third memory and, if they match, for piloting a switch which connects said actuator to a pulse generator, the key for said lock comprising a memory in which is stored at least one code identical to the one stored in the first memory of a lock and the related algorithm, a microprocessor and an interface of interconnection with the lock; so that, after connection of key with lock, the microprocessor compares the code stored in the first memory of the lock with the code stored in the memory of the key and, if they match , processes the code according to the same algorithm as aforesaid and relays it to the third memory of the lock.
Claim 3
Dependent Claim
33 words
A lock according to Claim 1, characterized by the fact that said key comprises a clock for extracting according to a pre-established sequence the bits constituting the code memorized in the lock memory.
Claim 4
Dependent Claim
56 words
A lock according to Claim 1, characterized by the fact that provision is made for first comparators for singly comparing each of the bits contained in the second and in the third memory of the lock connected to the key, and a second comparator for verifying the output of the first comparators for piloting the switch.
Claim 5
Dependent Claim
25 words
A lock according to Claim 1, characterized by the fact that said actuator consists of an electromagnet, connected via said switch to a pulse generator.
Claim 6
Dependent Claim
58 words
A lock according to Claim 1, characterized by the fact that it is accompanied by a card on which is memorized the code of the lock and the related algorithm which with adequate means per se known can be read and sent to the memory of a key so as to make it fit to unlock the lock.
Claim 7
Dependent Claim
34 words
A lock-according to Claim 1, characterized by the fact that to said key is associated a pulse strip for feeding pre-established data to make possible the activation of the circuits of the said key.
Claim 8
Dependent Claim
21 words
A lock according to one or more of the preceding Claims, substantially as described above and illustrated in the attached drawing.
References Cited (Backward Citations)
No citation records indexed.
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