EP1017916B1 - Verfahren zum zuordnen einer fernbedienung zu einer basisstation - Google Patents
Verfahren zum zuordnen einer fernbedienung zu einer basisstation Download PDFInfo
- Publication number
- EP1017916B1 EP1017916B1 EP98958152A EP98958152A EP1017916B1 EP 1017916 B1 EP1017916 B1 EP 1017916B1 EP 98958152 A EP98958152 A EP 98958152A EP 98958152 A EP98958152 A EP 98958152A EP 1017916 B1 EP1017916 B1 EP 1017916B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- base station
- signal
- remote control
- signals
- association
- 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.)
- Expired - Lifetime
Links
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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
- G07C9/20—Individual registration on entry or exit involving the use of a pass
- G07C9/28—Individual registration on entry or exit involving the use of a pass the pass enabling tracking or indicating presence
-
- 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
- G07C9/20—Individual registration on entry or exit involving the use of a pass
- G07C9/21—Individual registration on entry or exit involving the use of a pass having a variable access code
Definitions
- the invention is based on a method of the type of the main claim, as in the German patent application AZ: 196 45 769.6.
- the assignment then takes place a remote control to one arranged in a motor vehicle Base station, in which the latter emits a search signal, what is in the range of the search signal Remote controls by sending back a contact signal at times that are characteristic of the remote controls reply.
- the base station determines those present Remote controls. She selects one of them and leads with it a "Challenge-Response" verification. Because clear remote control recognition through replacement of only one signal is possible, and the signal because it is not safety-relevant, simply be constructed can, the entire recognition takes place very quickly.
- determining for the assignment speed is therefore above all subsequent challenge-response verification. It is based on the execution of safety-relevant computing operations, which are extensive and require time accordingly.
- user-specific integrated circuits ASIC
- the challenge or response calculation in less than three milliseconds. So that can Trigger the assignment check by operating the door handle a vehicle so that the door only opens is possible if the remote control belongs to the vehicle has been verified. The user notices the mapping process Not.
- the aforementioned ASICs fulfill their function well, they are comparative in production expensive.
- An access control device is already known from EP-A-0 285 419 known. It includes a query unit, the one Issues query signal.
- the receiving the interrogation signal Transponders differ from one another in each case deposited identity code.
- the problem is solved by a method with the features of the main claim.
- the method according to the invention is easily as a program in the base station or remote control microprocessor already available, and eliminates the need to provide an ASIC. It ensures the same security as when using a ASICs.
- a gain in security can advantageously be realized, by the speed of the challenge response calculation is specifically controlled when the challenge-response dialog carried out several times in a row becomes.
- FIG. 1 shows a block diagram of an access device
- Figure 2 is a flow chart to illustrate your Operation.
- Figure 1 shows a base station 10, which is part of a device or can be an object or permanently assigned to such is.
- the base station can be part of the access control device of a building or a motor vehicle his.
- Another component of the shown in Figure 1 Access device is a remote control in the following called actuator 20, which the base station functionally contactless via a signal transmission path 30 assigned.
- the remote control can in particular be a transponder.
- About active connections, not shown acts the base station 10 on the technical device one whose part or which it is assigned to. Using in a motor vehicle, for example, it controls the Access to the vehicle or its commissioning.
- a microprocessor 13 is part of the base station 10, which controls the operation of base station 10 especially prompted the output of signals and incoming Evaluates signals. Connected to the microprocessor is a transmitting / receiving device 11 for delivery or receipt from contactless via the signal transmission path 30 transmitted signals.
- the microprocessor 13 is a memory 14 is also assigned. Inside are Assignment information on the basis of which the base station 10 assigned remote controls 20 recognizes. The mapping information are: a serial number 15, a manufacturer code 17, a cryptic key code 31, a directory 16 with Information about those assigned to base station 10 Remote controls 20, as well as a random number 18.
- the serial number 15 is characteristic of mutually assigned base stations 10 and remote controls 20. It is made by the manufacturer the technical facility that defines the base station 10 or the remote controls 20 are assigned.
- the manufacturer code 17 denotes the associated device, i.e. the base station 10 clearly. It is assigned by the manufacturer of the base station and is unchangeable.
- the directory 16 contains for each assigned remote control 20 a data record 16a, 16b, 16c, which is the group number 25 of a remote control 20, their manufacturer code 27, a random number and one Contains target response. Distinguish the group numbers 25 the remote controls assigned to a base station 10 with the same serial numbers, the corresponding one Manufacturer code 27 is used in conjunction with the cryptic Key code 31 and random number 18 by the microprocessor 13 is generated to form the target response.
- the cryptic key code 31 is preferably also from Manufacturer of the related technical equipment, such as one Vehicle manufacturers set.
- One complete record at a time 16a, 16b, 16c allows the verification of an associated one Remote control 20.
- the remote control has one on the base station side Transmitting / receiving device 11 corresponding transmitting / receiving device 21, for reception from the base station 10 emitted signals or for emitting signals to the base station 10.
- the transmitter / receiver device is analogous to the base station 21 is followed by a microprocessor 23 which controls the operation of the remote control 20, while especially the evaluation of the via the transceiver 22 incoming signals, depending initiates follow-up action from the results and the Output signals monitored.
- the microprocessor 23 is assigned a storage unit 24, in which assignment information to assign the remote control 20 to a Base station 10 are stored. Stored for this - analog to base station 10 - a serial number 15, a group number 25, a manufacturer code 27 and a cryptic Key code 31.
- the meaning of the memory contents corresponds to each of the meaning of the same memory contents in the memory 14 of the base station 10.
- the manufacturer code is awarded by the manufacturer of the remote control 20 and clearly describes them.
- Serial number 15 is for those from base station 10 and associated remote controls 20 existing overall device characteristic code and identical to the memory 14 of the base station 10 contained Serial number.
- the group number 25 distinguishes the same Serial numbers 15 having remote controls 20 from each other. It is used when using the entire device specified the user.
- the cryptic key code 31 is by the manufacturer of the base station 10 associated technical equipment and is identical to the one in the base station. In connection with the Manufacturer code 27 and that of the base station 10 via the Signal transmission link 30 fed challenge signal dinet he used to verify membership of a base station 10th
- a plurality of remote controls 20 can be assigned to a base station 10 his. All remote controls 20 and the base station 10 have an identical one in their memories 14, 24 Serial number 15 and use one for verification cryptic key code 31. The individual remote controls 20 differ by their group numbers 25 and their Manufacturer Codes 27.
- the assignment process is not activated by pressing one illustrated mechanical, electrical or electro-optical Trigger mechanism triggered by a user Step 100.
- the Trigger mechanism especially when the door handle is actuated consist.
- the Microprocessor 13 of base station 10 On the basis of a signal given when it was triggered, the Microprocessor 13 of base station 10 first has an internal one Counter A to the value 0, step 102. Then it unloads the memory 14, the random number 18, which then activation signal called “Challenge” signal below forms, and the "target response" signals below called, expected response signals 16a, 16b, 16c for all the remote controls 20 assigned to the base station 10, Step 104. He then increments counter A by 1, step 106. The microprocessor 13 then directs the delivery of a Search signals by the transceiver 11 a, step 108.
- the search signal includes a Start and synchronization information especially in the Memory 14 stored serial number 15. It is expediently not encrypted and is within reach of everyone remote controls located on the signal transmission path 30 20 received via their transmitting / receiving devices 21.
- the microprocessor 13 By checking in which time windows contact signals are received are, the microprocessor 13 now provides the base station 10 determines which remote controls 20 with which group numbers are present, step 114. Will not be present Remote control 20 determined, the microprocessor 13 checks the Value of counter A, step 116. If it is less than a predetermined one Reference value, for example 5, is caused immediately again sending a search signal and repeated continue the procedure from step 106. Becomes the reference value exceeded, the microprocessor 13 breaks the membership test ab, step 117. Passed the test in Step 114 that at least one remote control 20 is present is, the microprocessor 13 selects from the remote controls present 20 one from which he subsequently carries out a membership test carries out step 118. After selection a remote control he counts a second internal counter B up one step, step 120. The Microprocessor 13 the transmission of a subsequent challenge signal via the transceiver 11. As Challenge signal is the random number stored in the memory 14 18th
- the selected remote control 20 receives via its transceiver 21 the challenge signal and forms from it by linking with manufacturer code 27 and cryptic key code 31 a "response" signal, which sends it back to base station 10 as a response signal, Step 124.
- the microprocessor 13 Upon receipt of the microprocessor 13 compares that of the Remote control 20 returned response signal with the previously target response signal 16a, 16, 16c loaded in step 104 the selected remote control 20, step 126. Voices The target response signal and response signal match, the Microprocessor 13 returns the internal counter B to the value 0, Step 132 and causes the release of an enable signal, which, for example, gives access to a motor vehicle and / or enables its operation, step 134. The microprocessor 13 then determines a random number 18 and thus determined for everyone entered in directory 16 Group number 25 a new target response signal, Step 136. With the random number 18 and the newly formed ones Target occupancy signals it occupies memory locations 16a, 16b, 16c and 18 then new. The new memory contents serve as the basis for the assignment check after the next triggering. By rewriting the Memory contents 16 and 18 is the membership check process ended, step 138.
- step 126 If the check in step 126 reveals that this is from the remote control 20 response signal sent back does not match that of Processor loaded target response signal 16a, 16b, 16c matches, the microprocessor 13 sets the internal counter B. up one step, step 128. He then checks whether the content counter B has a predetermined limit value, for example exceeds 3, step 130. Is that the If so, the microprocessor 13 determines one in accordance with step 136 new random number 18 and new target response signals 16a, 16b, 16c with which he the corresponding memory contents in memory 14 overwrites. Then it breaks the mapping check process off, step 138.
- step 130 If the check in step 130 reveals that the one assigned to counter B. Limit has not yet been exceeded, the Microprocessor 13 also redetermines the random number 18 and the target response signals 16a, 16b, 16c according to Step 136 through. However, he then continues with the repetition step 104 and loads the redetermined ones Memory contents 18 and 16a, 16b, 16c immediately new to then perform step 106 ..
Description
Claims (10)
- Verfahren zum Zuordnen einer Fernbedienung zu einer Basisstation, wobei die Basisstation (10) ein Suchsignal aussendet (108), die Fernbedienung (20) bei Übereinstimmung des Suchsignales mit einem abgespeicherten Referenzsignal ein Kontaktsignal zurücksendet (112), und die Basisstation (10) daraufhin ein bei jeder Zuordnung veränderliches Aktivierungssignal zur Verifikation der Zugehörigkeit zu der Fernbedienung abgibt (122), dadurch gekennzeichnet, daß das veränderliche Aktivierungssignal bereits vor Aussendung des Suchsignales von der Basisstation festgelegt (136) und für die Zuordnung nur abgerufen wird (104).
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß von der Basisstation (10) bereits vor Absetzen des Suchsignales auch das Antwortsignal festgelegt wird (136), mit dem die zugehörige Fernbedienung (20) nach Erhalt des veränderlichen Aktierungssignales antworten soll.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Festlegung des veränderlichen Aktivierungsignales jeweils nach Abschluß einer erfolgreichen Zuordnung (126, 134) einer Fernbedienung (20) zu einer Basisstation (10) erfolgt.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß ein neues veränderliches Aktivierungssignal festgelegt wird (136), wenn ein von einer Fernbedienung (20) auf ein Aktivierungssignal hin zurückgesandtes Antwortsignal nicht mit dem in der Basisstation (10) vorbestimmten Sollantwortsignal übereinstimmt.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Suchsignal mehrfach unmittelbar hintereinander ausgesandt wird, wenn auf das vorhergehende Suchsignal ein Kontaktsignal nicht eingeht.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die Durchführungszeit bei der Neufestlegung des veränderlichen Aktierungssignales gegenüber der kürzestmöglichen Durchführungszeit verlängert wird.
- Basisstation miteiner Sende-/Empfangseinrichtung (11), welche zur Abgabe von Such- und Aktivierungssignalen sowie zum Empfang von Kontakt- sowie Antwortsignalen von Fernbedienungen (20) ausgebildet ist,Mitteln (13) zur Veranlassung/Auswertung der über die Sende-/Empfangseinrichtung (11) abzusetzenden/empfangenen Signale,einer nichtflüchtigen Speichereinheit (14) zur Ablage von feststehenden und veränderlichen Zuordnungsinformationen (15, 17, 31, 16, 18), welche der Basisstation (10) wenigstens eine Fernbedienung (20) zuordnen und die Prüfung der Zugehörigkeit erlauben, dadurch gekennzeichnet, daß die Mittel (13) das veränderliche Aktivierungssignal bereits vor Aussendung des Suchsignals von der Basisstation (10) festlegen und für die Zuordnung nur abrufen.
- Basisstation nach Anspruch 7, dadurch gekennzeichnet, daß die nichtflüchtige Speichereinheit (14) als genau einmal programmierbares Speichermedium ausgeführt ist.
- System umfassend eine Fernbedienung, dieeine Sende-/Empfangseinrichtung (21), welche zum Empfang von Such- und Aktivierungssignalen, sowie zur Abgabe von Kontakt- und Antwortsignalen ausgebildet ist,Mittel (23) zur Auswertung/Veranlassung empfangener/abzusetzender Signale,sowie eine nichtflüchtige Speichereinheit (24) zur Ablage von Zuordnungsinformationen (15, 25, 27, 31), welche die Fernbedienung (20) einer Basisstation (10) zuordnen, umfasst, sowie weiterhin umfassend eine Basisstation miteiner Sende-/Empfangseinrichtung (11), welche zur Abgabe von Such- und Aktivierungssignalen sowie zum Empfang von Kontakt- sowie Antwortsignalen von Fernbedienungen (20) ausgebildet ist,Mitteln (13) zur Veranlassung/Auswertung der über die Sende-/Empfangseinrichtung (11) abzusetzenden/empfangenen Signale,einer nichtflüchtigen Speichereinheit (14) zur Ablage von feststehenden und veränderlichen Zuordnungsinformationen (15, 17, 31, 16, 18), welche der Basisstation (10) wenigstens eine Fernbedienung (20) zuordnen und die Prüfung der Zugehörigkeit erlauben, dadurch gekennzeichnet, daß die Mittel (13) das veränderliche Aktivierungssignal bereits vor Aussendung des Suchsignals von der Basisstation (10) festlegen und für die Zuordnung nur abrufen.
- System nach Anspruch 9, dadurch gekennzeichnet, dass die nichtflüchtige Speichereinheit (14) der Basisstation (10) als genau einmal programmierbares Speichermedium ausgeführt ist.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742495 | 1997-09-26 | ||
DE19742495 | 1997-09-26 | ||
DE19841514A DE19841514A1 (de) | 1997-09-26 | 1998-09-10 | Verfahren zum Zuordnen einer Fernbedienung zu einer Basisstation |
DE19841514 | 1998-09-10 | ||
PCT/DE1998/002808 WO1999016989A1 (de) | 1997-09-26 | 1998-09-22 | Verfahren zum zuordnen einer fernbedienung zu einer basisstation |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1017916A1 EP1017916A1 (de) | 2000-07-12 |
EP1017916B1 true EP1017916B1 (de) | 2004-04-14 |
Family
ID=26040328
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98958152A Expired - Lifetime EP1017916B1 (de) | 1997-09-26 | 1998-09-22 | Verfahren zum zuordnen einer fernbedienung zu einer basisstation |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1017916B1 (de) |
AU (1) | AU730422B2 (de) |
ES (1) | ES2219920T3 (de) |
WO (1) | WO1999016989A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6475724B1 (en) | 1997-01-28 | 2002-11-05 | The Regents Of The University Of California | Nucleic acids, kits, and methods for the diagnosis, prognosis and treatment of glaucoma and related disorders |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2946942C2 (de) * | 1979-11-21 | 1985-07-18 | Brown, Boveri & Cie Ag, 6800 Mannheim | Verfahren zum Erkennen einer Vielzahl von Objekten |
EP0285419B1 (de) * | 1987-03-31 | 1994-08-24 | Identec Limited | Zugangskontrolleinrichtung |
US5266925A (en) * | 1991-09-30 | 1993-11-30 | Westinghouse Electric Corp. | Electronic identification tag interrogation method |
US5856788A (en) * | 1996-03-12 | 1999-01-05 | Single Chips Systems Corp. | Method and apparatus for radiofrequency identification tags |
-
1998
- 1998-09-22 ES ES98958152T patent/ES2219920T3/es not_active Expired - Lifetime
- 1998-09-22 WO PCT/DE1998/002808 patent/WO1999016989A1/de active IP Right Grant
- 1998-09-22 AU AU14325/99A patent/AU730422B2/en not_active Expired
- 1998-09-22 EP EP98958152A patent/EP1017916B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
AU730422B2 (en) | 2001-03-08 |
WO1999016989A1 (de) | 1999-04-08 |
AU1432599A (en) | 1999-04-23 |
ES2219920T3 (es) | 2004-12-01 |
EP1017916A1 (de) | 2000-07-12 |
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