Patent EP0122244A2 successfully refreshed from Google Patents.
EP0122244A2
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A lock system
Assignee: BESAM SECURITY AB
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Filing: 1984-03-30
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Granted: —
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Expires: 2004-03-30
Abstract
Abstract The invention relates to a lock system for rooms which are to be made exclusively accessible to different uses over different periods of time, for example hotel rooms. The keys of the system comprise magnetic cards which are provided with magnetically registered data, which for each card includes lock-identification data valid for a given lock or a given group of locks, a validity time expressed in real time and a randomly selected legitimacy code. Each lock includes an electrically actuable lock mechanism (4), a magnetic-card reader (3), a memory (6) for the storage of data, a real-time clock (7), a programming unit (10), a legitimacy comparator (8), and a time comparator (9). The memory (6) has stored therein the lock-identification data valid for the lock. When a magnetic card is introduced for the first time into the card reader (3) of a lock, the legitimacy comparator (8) compares the lock-identification data registered on the card with the lock-identification data stored in the memory (6), and the time comparator (9) compares the validity time registered on the card with the real time given by the real-time clock (7). If these comparisons show agreement, the lock opens and the programming unit (10) is instructed to store into the memory the validity time and the legitimacy code registered on the card. When a magnetic card is later introduced to the card reader (3) the time comparator compares the real time given by the real-time clock (7) with the validity time in the card data stored in the memory and the legitimacy comparator (8) compares the data registered on the card with the data stored in the memory (6) of the lock, and the lock is opened when agreement is found between the data compared. If the comparison made by the time comparator (9) show disagreement, the time comparator compares the validity time registered on the card with the real time given by the real-time clock (7) and the legitimacy comparator (8) compares the lock-identification data registered on the card with the lock-identification data stored in the memory and, if these comparisons show agreement, the lock is opened and the programming unit (10) is used to replace the card data already stored in the memory (6) with the data registered on the card.
Inventors
- 👤 Bengt Olenfalk
- 👤 Göran Witt
- 👤 Anders Sarberg
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 11:33
CPC Classifications
G; G07; G07C; G07C9/00; G07C9/00174; G07C9/00896; G07C9/00904; G07C9/20; G07C9/21; G07C9/215
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
451 words
A lock system including at least one lock and at least one key for unlocking the lock, in which the key comprises a card (1) provided with magnetically* registered data (2), and the lock includes a locking mechanism (4) having electrically actuable means for unlocking the same, a magnetic-card reader (3) arranged to receive a card (1) of the aforementioned kind and to read the data registered thereon, a memory (6) for storing data, and a comparison means (8, 9) for comparing the data stored in said memory (6) with data read from said card by means of said magnetic-card reader (3) and for acting upon the locking mechanism (4) in response to said comparison, characterized in that the data (2) registered on the card (1) includes a lock identification allotted to the lock, a validity time expressed in real time, and a randomly selected legitimacy code allotted individually to the card; the lock includes a real-time clock (7) and a programming unit (10) for entering data into said memory (6) and for changing the data content of said memory; the comparison means of the lock includes a legitimacy comparator (8) and a time comparator (9); the memory (6) of said lock includes said lock-identification data and is capable of storing card data of the aforementioned kind; and in that upon insertion of a card of the aforementioned kind in the card reader (3), a) the time comparator (9) is arranged to compare the real time given by the real-time clock (7) with the validity time in the card data stored in the memory (6) and the legitimacy comparator (8) is arranged to compare the data registered on said card with the card data stored in the memory (6), the locking mechanism (4) being caused to take its unlocked state if all said comparisons are in agreement, b) whereas, if the comparison made by the time comparator (9) between the real time given by the real-time clock (7) and the validity time in the card data store in the memory (6) indicates disagreement, or no card data is stored in the memory (6), the time comparator (9) is arranged to compare the validity time registered on said card with the real time given by the real-time clock (7), and the legitimacy comparator (8) is arranged to compare the lock-identification data registered on said card with the lock-identification data stored in the memory (6), and if these comparisons are in agreement, the lock mechanism (4) is caused to take its unlocked state and the programming unit (10) is caused to remove any card date already stored in the memory and to store the data registered on said card in the memory (6),
Claim 2
Dependent Claim
451 words
A lock system including at least one lock and at least one key for unlocking the lock, in which the key comprises a card (1) provided with magnetically* registered data (2), and the lock includes a locking mechanism (4) having electrically actuable means for unlocking the same, a magnetic-card reader (3) arranged to receive a card (1) of the aforementioned kind and to read the data registered thereon, a memory (6) for storing data, and a comparison means (8, 9) for comparing the data stored in said memory (6) with data read from said card by means of said magnetic-card reader (3) and for acting upon the locking mechanism (4) in response to said comparison, characterized in that the data (2) registered on the card (1) includes a lock identification allotted to the lock, a validity time expressed in real time, and a randomly selected legitimacy code allotted individually to the card; the lock includes a real-time clock (7) and a programming unit (10) for entering data into said memory (6) and for changing the data content of said memory; the comparison means of the lock includes a legitimacy comparator (8) and a time comparator (9); the memory (6) of said lock includes said lock-identification data and is capable of storing card data of the aforementioned kind; and in that upon insertion of a card of the aforementioned kind in the card reader (3), a) the time comparator (9) is arranged to compare the real time given by the real-time clock (7) with the validity time in the card data stored in the memory (6) and the legitimacy comparator (8) is arranged to compare the data registered on said card with the card data stored in the memory (6), the locking mechanism (4) being caused to take its unlocked state if all said comparisons are in agreement, b) whereas, if the comparison made by the time comparator (9) between the real time given by the real-time clock (7) and the validity time in the card data store in the memory (6) indicates disagreement, or no card data is stored in the memory (6), the time comparator (9) is arranged to compare the validity time registered on said card with the real time given by the real-time clock (7), and the legitimacy comparator (8) is arranged to compare the lock-identification data registered on said card with the lock-identification data stored in the memory (6), and if these comparisons are in agreement, the lock mechanism (4) is caused to take its unlocked state and the programming unit (10) is caused to remove any card date already stored in the memory and to store the data registered on said card in the memory (6),
Claim 3
Dependent Claim
200 words
A lock system according to claim l, characterized in that the data registered on the card may also include a separate override code, which the legitimacy comparator (8) in the lock is arranged to detect, when the card is introduced to the magnetic-card reader (3), in which case, if the aforementioned comparison made by the time comparator (9) between the real time given by the real-time clock (7) and the validity time stored in the memory (6) results in agreement, whereas the aforesaid comparison made by the legitimacy comparator (8) between the data registered on the card and the card data stored in the memory(6)indicates disagreement, l1 the time comparator (9) is arranged to compare the validity time registered on said card with the real time given by the real-time clock (7), and the legitimacy comparator (8) is arranged to compare the lock-identification data registered on said card with the lock-identification data stored in the memory and, if these comparisons are in agreement, the lock mechanism (4) is caused to take its unlocked state and the programming unit (10) is caused to replace the card data previously stored in the memory (6) with the card data registered on said card.
Claim 4
Dependent Claim
128 words
A lock system according to claim 1 or claim 2 and including a plurality of locks, characterized in that mutually different locks have mutually different lock-identification codes stored in their memories and also a system-identification code common for the whole of the system; in that all the magnetic cards intended for unlocking respective locks in the system also contain said system identification in the data registered on the card, the legitimacy comparators (8) in respective locks being arranged to compare the system-identification code registered on an inserted card with the system-identification code stored in the memory (6) of said lock in the same manner as the comparison between the lock identification code registered on an inserted card with the lock-identification code stored in the memory of said lock.
Claim 5
Dependent Claim
87 words
A lock system according to Claim 3, characterized in that it includes at least one further magnetic card, the stored data of which, in addition to said system identification, the validity time expressed in real time and a randomly selected legitimacy code, also contains a lock identification which is so formed as to coincide with lock identification data stored in the memories in a pre-determined number of the locks incorporated in the system, so that said card can be used for unlocking said pre-determined number of locks.
Claim 6
Dependent Claim
183 words
A lock system according to Claim 3, characterized in that it includes at least one further magnetic card, whose registered data includes said system identification, a lock identification valid for a given lock or a number of given locks in the system, and a validity time expressed in real time, but no randomly selected legitimacy code, but merely a code which identifies this type of additional card, wherewith the legitimacy comparator (8) incorporated in a lock is arranged, when said additional card is introduced to the card reader (3) of said lock, to detect said code identifying said card type, wherewith the legitimacy comparator is arranged to compare the system and lock identification data registered on the card with the system and lock identification data registered in the memory (6) of the lock, and the time comparator (9) of said lock is arranged to compare the validity time registered on the card with the real time given by the real-time clock (7) and, when all the comparisons are in agreement with another, to cause the lock mechanism (4) to take an unlocking state.
References Cited (Backward Citations)
No citation records indexed.
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