DE3407436A1 - A method for code protection for an electronic key - Google Patents

A method for code protection for an electronic key

Info

Publication number
DE3407436A1
DE3407436A1 DE19843407436 DE3407436A DE3407436A1 DE 3407436 A1 DE3407436 A1 DE 3407436A1 DE 19843407436 DE19843407436 DE 19843407436 DE 3407436 A DE3407436 A DE 3407436A DE 3407436 A1 DE3407436 A1 DE 3407436A1
Authority
DE
Grant status
Application
Patent type
Prior art keywords
method
electronic key
code protection
protection
code
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Revoked
Application number
DE19843407436
Other languages
German (de)
Inventor
Friedrich Dr Techn Dannhaeuser
Erwin Dipl Ing Heuwieser
Heinz Dipl Ing Preissinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME 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
    • G07C9/00Individual entry or exit registers
    • G07C9/00007Access-control involving the use of a pass
    • G07C9/00111Access-control involving the use of a pass the pass performing a presence indicating function, e.g. identification tag or transponder
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME 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
    • G07C9/00Individual entry or exit registers
    • G07C9/00174Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00182Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME 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
    • G07C9/00Individual entry or exit registers
    • G07C9/00174Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C2009/00753Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
    • G07C2009/00769Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means
    • G07C2009/00785Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means by light
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME 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
    • G07C2209/00Indexing scheme relating to groups G07C9/00 - G07C9/02
    • G07C2209/06Involving synchronization or resynchronization between transmitter and receiver; reordering of codes
DE19843407436 1984-02-29 1984-02-29 A method for code protection for an electronic key Revoked DE3407436A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19843407436 DE3407436A1 (en) 1984-02-29 1984-02-29 A method for code protection for an electronic key

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19843407436 DE3407436A1 (en) 1984-02-29 1984-02-29 A method for code protection for an electronic key
DE19843472814 DE3472814D1 (en) 1984-02-29 1984-12-17 Coding method for an electronic key
EP19840115594 EP0154019B1 (en) 1984-02-29 1984-12-17 Coding method for an electronic key

Publications (1)

Publication Number Publication Date
DE3407436A1 true true DE3407436A1 (en) 1985-08-29

Family

ID=6229210

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19843407436 Revoked DE3407436A1 (en) 1984-02-29 1984-02-29 A method for code protection for an electronic key

Country Status (2)

Country Link
EP (1) EP0154019B1 (en)
DE (1) DE3407436A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3636822C1 (en) * 1986-10-29 1987-10-15 Ruf Kg Wilhelm Electronic Fernbetaetigungseinrichtung, particularly for central locking systems of motor vehicles
US6690796B1 (en) 1995-05-17 2004-02-10 The Chamberlain Group, Inc. Rolling code security system
US6980655B2 (en) 2000-01-21 2005-12-27 The Chamberlain Group, Inc. Rolling code security system
US8194856B2 (en) 1995-05-17 2012-06-05 The Chamberlain Group, Inc. Rolling code security system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6175312B1 (en) 1990-05-29 2001-01-16 Microchip Technology Incorporated Encoder and decoder microchips and remote control devices for secure unidirectional communication
US6166650A (en) * 1991-05-29 2000-12-26 Microchip Technology, Inc. Secure self learning system
DE4325137A1 (en) * 1993-07-27 1995-02-02 Rbr Computertechnik Gmbh Process for actuating closure mechanisms with the aid of identification means
DE4421496B4 (en) * 1993-10-01 2006-09-07 Marquardt Gmbh Electronic door locking system on a motor vehicle
US6108326A (en) * 1997-05-08 2000-08-22 Microchip Technology Incorporated Microchips and remote control devices comprising same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2168972B1 (en) * 1972-01-28 1977-07-15 Cheops
DE2847730A1 (en) * 1978-11-03 1980-05-14 Sachs Systemtechnik Gmbh Magnetic switch lock
DE3225754A1 (en) * 1982-07-09 1984-01-12 Huelsbeck & Fuerst Process for schliesswirksamen interaction of a schluesselartigen partly with a castle-like part

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3636822C1 (en) * 1986-10-29 1987-10-15 Ruf Kg Wilhelm Electronic Fernbetaetigungseinrichtung, particularly for central locking systems of motor vehicles
US4847614A (en) * 1986-10-29 1989-07-11 Wilhelm Ruf Kg Electronic remote control means, especially for centrally controlled locking systems in motor vehicles
US6690796B1 (en) 1995-05-17 2004-02-10 The Chamberlain Group, Inc. Rolling code security system
US8194856B2 (en) 1995-05-17 2012-06-05 The Chamberlain Group, Inc. Rolling code security system
US8233625B2 (en) 1995-05-17 2012-07-31 The Chamberlain Group, Inc. Rolling code security system
US8284021B2 (en) 1995-05-17 2012-10-09 The Chamberlain Group, Inc. Rolling code security system
US8633797B2 (en) 1995-05-17 2014-01-21 The Chamberlain Group, Inc. Rolling code security system
US6980655B2 (en) 2000-01-21 2005-12-27 The Chamberlain Group, Inc. Rolling code security system

Also Published As

Publication number Publication date Type
EP0154019B1 (en) 1988-07-20 grant
EP0154019A1 (en) 1985-09-11 application

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Legal Events

Date Code Title Description
8130 Withdrawal
8165 Unexamined publication of following application revoked