Classifications

• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
  • G07C9/00—Individual registration on entry or exit
  • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
  • G07C9/00658—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys
  • G07C9/00674—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys with switch-buttons
  • G07C9/0069—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys with switch-buttons actuated in a predetermined sequence

Definitions

• the invention relates to coded locking devices, that is to say the control of which unlocking requires the composition of a code.
• unlocking should be understood in the broadest sense of issuing an authorization whether or not accompanied by an appropriate command, such as the release of access to a room, a receptacle or information, ticket distribution, etc.
• the code is identifiable by a decimal number or the like (for example by a random sequence of numbers and letters) and can be translated by a series of binary signals.
• such a change requires the intervention on the spot of an approved specialist dispatched by a manager such as the company having mounted the locking device.
• the main object of the invention is to ensure such a temporary "overlap" of the two codes.
• the three operations above are deferred in a predetermined manner from the first composition of the second code y.
• the invention includes, apart from these main provisions, certain other provisions which are preferably used at the same time and which will be more explicitly discussed below.
• these keys can be sixteen in number, the numbers being all of those between 0 and 9 and the letters A, B, C, D, E and F.
• Unlocking such a device is only possible by an authorized user, that is to say knowing the code, code here characterized by a series of numbers and / or letters such as for example 724B.
• Such unlocking is ensured by dialing the code by successive presses of the corresponding keys on the keyboard, namely, for the example above, keys 7, 2, 4 and B.
• this device is made sensitive at any time to two codes, namely not only the code in service at this time or "first code x”, but also a secret code at said instant or "second code y ", this second code being deductible from the first by a predetermined law.
• Said law is another bet recorded in the device, or more precisely in an electronic assembly associated with this device, so that the latter is able to automatically carry out successive code changes, each change of a code being triggered automatically by dialing the following code from the list.
• the law in question can be any of those likely to correspond to a number x, preferably available in binary form, another number y or at least one of the various numbers therein forming part of a set. well defined.
• the successively valid codes are x, f (x), f 2 ( x ) ... f n ( x ) ...
• n denotes an integer
• f n (x) means f [f n-1 (x)] and the symbol f (x) is equivalent to f 1 (x).
• each expression of the first code x is composed of two halves, namely a first half a and a second half b whose respective locations in said expression are well determined, and the corresponding first half is constituted. to the second code y by the half b above, the second half 2 corresponding to this code y then automatically playing the role previously held by the second half b in the code x.
• the two halves a and b of the code x are respectively 72 and 4B and therefore constitute a code y following by a new set of four symbols of which the first two would be 4B, the other two symbols being arbitrary and chosen by the person responsible for the device, but becoming definitive as soon as they have been composed for the first time on the keyboard following the first two symbols 4 and B.
• these two halves are composed by sampling the binary number corresponding to each code.
• this number is 0 1 1 1 0 0 1 0 0 1 0 0 1 0 0 1 0 1 1 1 1
• Sampling could also be carried out in an irregular manner instead of one of the two regular ways given in example above, the distribution of the samples being able for example to be the continuation of rows 2, 3, 4, 6, 9 , 10, 12 and 16.
• each new code y is not completely determined in advance as a function of the previous code x.
• the law of deduction of each code y from a code x expressed in the form of a binary number consists in suppressing the first binary unit of this number, in shifting to the left all its other units and to replace the last binary unit with a new one which can still be chosen by the manager.
• the invalidation of the code in service is not carried out immediately after the first composition of a new code, but deferred so as to avoid that the users of the device are caught off guard: the two codes considered remain thus valid simultaneously during an information period for these users.
• the delay R can be one day to allow all the inhabitants of the building to be informed of the code change at intervene.
• the delay R can be defined not by a duration, but by a predetermined number N of compositions of the code in service and / or of the new code: this is how, for the application which has just been reported when the door of a collective building is unlocked, if the average number N of opening operations for this door is 100 per day, the triggering of the above three operations can be postponed until this operation opening has been carried out 100 times, using either of the two codes, from the first dialing of the new code.
• signaling means such as for example the lighting of an indicator light, are provided to signal the user that the locking device is in its "delayed code change" period. ", period initiated by the first composition of a new code, so as to remind this user of the imminent change of the code or to encourage him to inquire if he is not aware said new code.
• the successive codes are recorded in an electronic memory, for example with semiconductor, supplied by a backup battery or arranged in such a way that successive registrations and erasures of codes can be carried out there. by electrical control and that the recorded codes are kept there even in the absence of any electrical supply.
• the invention is in no way limited to those of the modes of application and embodiments which have been more especially envisaged; on the contrary, it embraces all variants, in particular those where the number of codes (x l , x 2, etc.) normally in service at a given instant or during a given period for actuating the unlocking device would be greater than 1, as is the case for locks that can be actuated by two different day and night codes, or even for locks that can be activated by hierarchical codes suitable for actuating numbers of different locks respectively and brought to the attention of users meeting different authorization criteria, each of these codes x l , x 2 can be "changed” automatically on site by simply dialing a "next code" (yi, y 2 ) after a predetermined delay (R 1 , R Z ) consecutive to this composition, the various delays considered being able to be different from one code to another.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Lock And Its Accessories (AREA)

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• 1984
  • 1984-07-20 FR FR8411568A patent/FR2568032B1/fr not_active Expired
• 1985
  • 1985-07-19 EP EP85401499A patent/EP0169150B1/de not_active Expired
  • 1985-07-19 DE DE8585401499T patent/DE3566697D1/de not_active Expired
• 1986
  • 1986-07-17 US US06/886,779 patent/US4870411A/en not_active Expired - Fee Related

Patent Citations (3)

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