EP0948779A1 - Dispositif pour adapter une unite fonctionnelle d'accuse de reception sur un appareil - Google Patents

Dispositif pour adapter une unite fonctionnelle d'accuse de reception sur un appareil

Info

Publication number
EP0948779A1
EP0948779A1 EP97913100A EP97913100A EP0948779A1 EP 0948779 A1 EP0948779 A1 EP 0948779A1 EP 97913100 A EP97913100 A EP 97913100A EP 97913100 A EP97913100 A EP 97913100A EP 0948779 A1 EP0948779 A1 EP 0948779A1
Authority
EP
European Patent Office
Prior art keywords
signal
actuating element
actuating
assigned
search signal
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.)
Granted
Application number
EP97913100A
Other languages
German (de)
English (en)
Other versions
EP0948779B1 (fr
Inventor
Heidrun Hacker
Stephan Schmitz
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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
Priority claimed from DE19743101A external-priority patent/DE19743101B4/de
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0948779A1 publication Critical patent/EP0948779A1/fr
Application granted granted Critical
Publication of EP0948779B1 publication Critical patent/EP0948779B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

Definitions

  • the invention relates to a device according to the preamble of the main claim. Such is as
  • Access control system known from EP-A-285 419.
  • the device described enables a questioning unit to clearly identify an assigned transponder from a group of several transponders located simultaneously in the access area of the questioning unit by querying the transponder codes step by step.
  • the latter are designed as a multi-digit binary word.
  • the question unit checks whether the first digit of the binary code word matches the first digit of a reference code word present in the question unit. The transponders that do not match afterwards are no longer taken into account in the further check.
  • the questioning unit checks the remaining transponders to determine whether the second digit of their binary code words matches the second digit of the
  • Reference code word in the question unit matches.
  • the process is repeated until a single transponder remains, the binary coding of which corresponds in all places to the reference coding in the question unit. In this way, at least n question steps are necessary for the unambiguous determination of one among 2n transponders.
  • the device according to the invention allows one or more of a group of actuating elements to be clearly identified in only one question-answer step. In order to secure the assignment obtained, an exchange of alternating, encrypted codes between the elements involved is expedient.
  • the device according to the invention offers the possibility of assigning several authorized actuating means to one device. After a call from a
  • Device outgoing search signal answers each of them after a period of time characteristic of the actuating element in question.
  • the delivery of a search signal by the associated device for example the
  • the door locking device is expediently triggered by actuating the door handle.
  • the device according to the invention offers the possibility of teaching new actuating elements to the associated device.
  • one of the actuating elements is expediently specially marked, and learning of new actuating elements is only possible if the specially marked actuating element is in the communication environment of the device.
  • FIG. 1 shows a block diagram of an assignment device
  • FIG. 2 shows a flowchart to illustrate its operation
  • FIG. 3 shows the relationship between the time at which a contact signal is received and an actuation element
  • FIG. 4 shows a flowchart to illustrate the operation of the assignment device when teaching in new actuation elements
  • FIG. 5 the construction of a search signal.
  • reference number 10 denotes a device, for example an access control device for a motor vehicle or a building, a computer or other consumer goods.
  • the reference numeral 20 denotes a device called an actuating element, which is functionally assigned to the device 10.
  • An actuating element 20 can be a transponder, for example.
  • the device 10 there is a transmitting / receiving device 11 for the delivery or receipt of contactlessly via a radio link 30 transferable signals.
  • a decoder 12 Connected to its output is a decoder 12 which receives encrypted signals received by the transceiver 11 for decoding.
  • the decoder 12 is assigned a memory 31 with the necessary information, in particular in the form of a cryptic key code.
  • the decrypted signals are fed to a downstream microprocessor 13, which evaluates them and initiates follow-up measures depending on the result of the evaluation. In particular, it controls the delivery of signals via the transmitting / receiving device 11.
  • a memory 15 is also assigned to the microprocessor 13. This includes a serial number 16, a manufacturer code 17, and a directory 18 with the group numbers of the device 10
  • Actuators 20 The manufacturer code 17 is assigned by the manufacturer of the device and clearly identifies it.
  • the serial number 16 is characteristic of devices 10 and actuating elements 20 assigned to one another, the group numbers serve to distinguish actuators 20 assigned to a common device 10 with the same serial numbers.
  • Transmit / receive device 11 signals to be emitted are usually encrypted.
  • an encoder 14 is connected between the microprocessor 13 and the transceiver, which is also connected to the memory 31 in order to carry out the coding.
  • the device 10 has an input device 19 in order to allow a user access to the microprocessor 13.
  • the input device 19 can, for example, as indicated in FIG. 1, be designed as a keypad; any other configurations are also possible.
  • the actuating element 20 has a corresponding to the device-side transmitting / receiving device Transmitter / receiver device 21 for receiving signals emitted by device 10 or for emitting contactless signals to device 10. Analogously to the device, transmitter / receiver device 21 is followed by a decoder 22 for decoding coded signals. to
  • the decoder When the decoding is carried out, the decoder is likewise connected to a memory 31, the content of which corresponds to that of the memory 31 on the device side, and in which the cryptic key code used for signal encryption in the device 10 is stored.
  • Decoder 22 is also connected to a microprocessor 24 which processes signals received via transceiver 21 and encoder 22 and initiates follow-up measures depending on the result.
  • the microprocessor 24 controls in particular the signal output to the device 10 via the
  • Transmitting / receiving device 21 It is done in order to prevent eavesdropping or imitation, usually in encrypted form.
  • an encoder 23 is connected between the microprocessor 24 and the transceiver 21 - analogously to the device - which is used to carry out the
  • a memory device 25 is also assigned to the microprocessor 24. In particular, it includes a memory location 16 for storing a serial number, a memory location 26 for storing a group number, and a memory location 27 for storing a manufacturer code. The latter is assigned by the manufacturer of the actuating element 20 and clearly identifies that.
  • the serial number is a code characteristic of the overall device consisting of device 10 and actuating elements 20. It is expediently determined by the manufacturer or, if applicable, by the user of the overall device and is identical to the serial number 16 present in the device 10.
  • the group number serves to differentiate between several actuating elements 20 having the same serial number determined by the user when using the device.
  • usage information 28 for defining the functional scope of the respective actuating element 20.
  • the usage information 28 can limit the radius of action for the validity of an actuating element 20 to a specific value.
  • the usage information 28 can also be stored in the device 10 in its memory.
  • Radio link 30 for the transmission of contactless signals between the device-side transceiver 11 and the actuator-side receiving device 21. Signals from the device-side transceiver 11 simultaneously reach all actuating elements 20 within their range. As signals infrared signals or high-frequency signals are expediently used.
  • the operation of the device shown in Figure 1 is explained below. From the letters G and B located at each sequence step, it can be seen whether the relevant sequence step takes place in the device 10: G or in the actuating element 20: B.
  • the assignment process is usually initiated by a user actuating a mechanical, electrical or electro-optical trigger mechanism (not shown), step 100.
  • the trigger mechanism can consist, for example, of actuating the door handle.
  • the microprocessor 13 in the device 10 conducts the delivery on the basis of a signal which is subsequently delivered of a search signal by the transmitting / receiving device 11, step 102. As indicated in FIG.
  • the search signal essentially comprises a start sequence 35, preferably implemented as a start bit, and the serial number 16 stored in the memory 15. It is expediently unencrypted.
  • the search signal emitted by the device 10 is received by all the actuating elements 20 located within the range of the radio link 30 via its transmitting / receiving devices 21.
  • the microprocessor 24 of all actuation elements 20 reached checks in each case whether the serial number transmitted with the search signal matches the serial number 16 stored in the memory 25 and serving as a reference signal, step 104.
  • the start bit 35 also transmitted serves for this Synchronization of the microprocessor 24 on the received search signal. If the test carried out in the actuating element 20 in step 104 shows that the reference serial number 16 present in the memory 25 does not match the serial number transmitted with the search signal, this switches
  • Actuating element 20 in a sleep state step 101. It no longer participates in the subsequent communication with device 10.
  • the microprocessor 24 prepares a response in the form of a contact signal.
  • the contact signal is a short, simple signal, for example the group number 26 of the associated actuating element 20 in bit-coded form.
  • the processor 24 initiates its transmission after a period of time which is characteristic of the actuating element 20 from the receipt of the search signal.
  • the contact signal is then transmitted in a time window of a predetermined length, Step 105.
  • the length of the time window is dimensioned such that a reliable assignment of a contact signal is possible both on the part of the actuating elements 20 and on the part of the device.
  • FIG. 3 illustrates the function of the actuating elements 20 after the test of step 104 in a graphical representation.
  • the abscissa denotes a time axis t, divided into eight time windows F0, ..., F7, which begins with the arrival of the search signal in the actuating elements.
  • the ordinate indicates the characteristic group number 26 of the respective actuating element 20.
  • eight actuating elements 20 with the group numbers 0 to 7 are assigned to one device 10. Of these, the actuating elements 20 with the group numbers 2 and 6 are present when the device 10 sends out a search signal in the field of action of the search signal.
  • Both actuating elements 2 and 6 present respond accordingly to the search signal by sending out a contact signal in accordance with step 106.
  • the time of sending the contact signal corresponds, i.e. the order number of the selected time window, the group number of the respective actuator. Therefore, the actuator 2 sends its contact signal after the
  • the actuating element number 6 after the end of the waiting time T6 ie the time window F0 to F5, in the time window F6.
  • the microprocessor 13 now determines the actuating elements 20 present by checking in which time windows F0, ..., F7 contact signals have been received, step 106. In doing so, it checks by as many repetitions as many - m - time windows as actuating elements can at most be assigned, Step 107.
  • Actuating elements 20 present are noted by corresponding entries in the memory 15, step 103. If no actuating element 20 is determined, an abort signal is issued, steps 108, 111. After determining the operating elements 20 present, the operating mode is determined, step 109; The modes of assignment and teaching as well as other functions such as deleting, blocking, enabling and the like are possible. For this purpose, the microprocessor 13 checks whether there is a command for selecting the teaching mode. In the affirmative, it continues with the execution of the steps 200ff explained later. If there is no corresponding command, the microprocessor 13 makes a decision as to which of the actuating elements 20 present is another
  • Assignment communication is to take place, step 110.
  • the decision can be based, for example, on a ranking of the actuating elements 20, in which the actuating elements 20 are given different functions. For example, when used in motor vehicles, certain actuation elements 20 can be assigned a limited geographical area within which the vehicle can function with the actuation element. The one selected from the actuators 20 present
  • Confirmation element informs the microprocessor 13 by sending its group number. Any other actuation elements 20 with other group numbers that may be present no longer participate in the subsequent communication.
  • the device 10 then subjects the selected actuating element 20 to an assignment correctness check. In the example, this is done using the known challenge-response method.
  • the device 10 uses its transceiver 11 to send an encrypted challenge signal that is intended for the selected actuating element 20 and is only executed by it, step 112.
  • the microprocessor 13 on the device side determines a target response signal. The calculation is carried out from the challenge signal according to a predetermined algorithm using the cryptic key stored in the memory 31 and the manufacturer code 17 present in the memory 15.
  • the challenge signal is meanwhile received by the transmitting / receiving device 21 in the actuating element 20, decoded in the decoder 22 with the aid of the cryptic key 31 and fed to the microprocessor 24.
  • the latter derives a response signal from the received challenge signal in the same way as the device-side microprocessor 13 and sends it back to the device 10, step 114.
  • the transceiver 11 decoded again in the decoder 12 and fed to the microprocessor 13.
  • the latter compares it with the previously determined target response signal, step 116. If the two do not match, device 10 and actuating element 20 are not associated with one another.
  • the processor 13 then initiates appropriate follow-up measures, for example it locks the device 10 against use, step 117.
  • a notice to the user is advised that an assignment has not been made, for example by means of a visual or acoustic display. Further connection measures can also be provided, for example a repetition of the assignment process starting with step 112 or with step 102.
  • step 116 result in a correspondence of the response signal returned by the actuating element 20 with the previously determined target response signal a confirmation that the assignment is correct. It expediently takes place in a form that is visually or acoustically perceptible to the user and leads, for example, to the release of the device 10, step 118.
  • the above-described device 10, 20, 30 also allows, by teaching, the assignment of new, in particular brand-new actuation elements 20 to an existing device 10.
  • the implementation of such a reassignment is shown in FIG. 4 as a flow chart. From the addition in the form of the letter G or B given in each sequence step, it can again be seen whether the relevant sequence step takes place in the device 10: G or in the actuating element 20: B.
  • the teaching of actuating elements 20 to be reassigned initially proceeds like the assignment of already known units shown in FIG. 2 and begins with the initiation of an assignment communication in accordance with step 100.
  • the known actuating elements 20 located in the area of effect of the device 10 are then determined in accordance with
  • Steps 102 to 108 the teach-in operating mode is determined, step 200.
  • the change between the assigning and teaching-in modes is expediently carried out by the user with the aid of the input device 17.
  • the microprocessor 13, step 202 checks whether a specific one , as
  • Main actuator treated actuator 20 is present.
  • the main actuating element is, for example, the actuating element with the group number 0, which correspondingly after the search signal has been received in the first Time window F0 sends back a contact signal. If the microprocessor 13 determines that the main operating element 20 is not present, it stops the teaching operation.
  • step 202 If the check in step 202 reveals that the
  • step 203 If the main operating element is present, it is subjected to an assignment correctness check, step 203, in accordance with steps 112 to 118. If there is an incorrect assignment, the teaching operation is terminated, step 201. If a correct assignment of the main operating element and device is found, the microprocessor 13 uses the directory 18 to check whether there are still free group numbers that have not yet been assigned to an operating element, and an assignment of further operating elements 20 to the device 10 is possible at all, step 204. In the event of a negative determination, it stops the teaching operation again, step 201. If the determination is positive, the microprocessor 13 initiates the transmission of a zero search signal, step 205.
  • the zero search signal corresponds to in its structure is a search signal, as it is issued in step 104 during normal operation, and is also unencrypted.
  • the serial number instead of the serial number, however, there is a new serial number which is characteristic of brand-new actuating elements 20.
  • binary serial numbers it simply consists, for example, of a sequence of zeros. If there are brand-new actuating elements 20 in the effective range of the radio link 30, these receive the zero search signal.
  • Their respective microprocessors 24 then cause a random selection of a time window in which they send a contact signal back to the device 10, step 206. For this purpose, they link, for example, the manufacturer code 27 present in the memory 25 with a random number generated by the microprocessor 24.
  • the device 10 checks the input of for the transmission of the zero search signal incoming contact signals, step 208. If the microprocessor 13 determines that no contact signal has been received, it terminates the teaching operation, step 201. On the other hand, the microprocessor 13 puts the input of a signal caused by a zero search signal
  • Contact signal fixed in a time window, it causes the transmission of a control signal, step 210, which immediately puts all other possibly present actuating elements 20 in idle state, i.e. even those who have a contact signal in a later one
  • Actuators 20 responded in the same time window, only a single actuator 20 participates in reassignment communication. Since in this way only a single active actuating element 20 to be learned remains in the range of action of the radio link 30, the microprocessor 13 initiates the transmission of the serial number 16, the cryptic code key 31 and one of the characteristic group numbers 26 assigned to the actuating element 20 in the future.
  • the transmitted code information 16, 26, 31 takes over the actuating element 20 into the spaces provided for this purpose in the memory 25 up to this point in time.
  • the actuating element 20 sends an acknowledgment signal to the device 10. This can be manufacturer number 27, for example.
  • the device-side microprocessor 13 It is stored by the device-side microprocessor 13 and causes the deposition of a locking command to the actuator 20. It causes the previously written into the memory 25 'serial number 16 and in the Memory 31 stored cryptic code information can be protected against writing and reading.
  • the actuating element 20 is then assigned to the device 10.
  • the device 10 issues a wake-up command, by means of which the possibly further actuating elements 20, which are in the sleep state, are activated again.
  • the teaching of further actuation elements 20 to be reassigned can then be continued by repeating steps 202.
  • the prescribed device can be designed and modified in a variety of ways. This applies, for example, to the structure of the device and actuating elements, to the design and sequence of procedural steps, for example with regard to the implementation of the access correctness check, or to the form and structure of the code information exchanged via the radio link.

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

Abstract

La présente invention concerne un dispositif permettant d'adapter une unité fonctionnelle d'accusé de réception (20) sur un appareil (10). Ledit dispositif comprend, côté appareil, un système émetteur (11) prévu pour émettre un signal de recherche et, côté bloc fonctionnel d'accusé de réception (20), un dispositif de traitement (21 à 24) équipé d'un récepteur de signaux de recherche, qui émet un signal de contact lorsque le signal de recherche correspond à un signal de référence convenu. Ce signal de contact est généré par le dispositif de traitement (21 à 24) uniquement après expiration d'un délai d'attente (T2, T6) préétabli et spécifique à un certain type d'unité d'accusé de réception (20), à compter de la réception du signal de recherche.
EP97913100A 1996-11-07 1997-10-15 Dispositif pour attribuer un élément d'opération à un appareil Expired - Lifetime EP0948779B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19645769 1996-11-07
DE19645769 1996-11-07
DE19743101A DE19743101B4 (de) 1996-11-07 1997-09-30 Verfahren zum Zuordnen eines Betätigungselementes zu einem Gerät
DE19743101 1997-09-30
PCT/DE1997/002362 WO1998020463A1 (fr) 1996-11-07 1997-10-15 Dispositif pour adapter une unite fonctionnelle d'accuse de reception sur un appareil

Publications (2)

Publication Number Publication Date
EP0948779A1 true EP0948779A1 (fr) 1999-10-13
EP0948779B1 EP0948779B1 (fr) 2004-06-02

Family

ID=26031035

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97913100A Expired - Lifetime EP0948779B1 (fr) 1996-11-07 1997-10-15 Dispositif pour attribuer un élément d'opération à un appareil

Country Status (5)

Country Link
US (1) US6982628B1 (fr)
EP (1) EP0948779B1 (fr)
AU (1) AU716515B2 (fr)
ES (1) ES2222506T3 (fr)
WO (1) WO1998020463A1 (fr)

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DE19703998A1 (de) * 1997-02-04 1998-08-06 Bosch Gmbh Robert Verfahren zum Betrieb einer Fernwirkeinrichtung und Fernwirkeinrichtung
DE19962622B4 (de) * 1999-12-23 2004-12-16 Siemens Ag Verfahren zum Ermitteln von im Zugriffsbereich einer Anfrageeinheit eines Zugangskontrollsystems befindlichen Datenträgern sowie Zugangskontrollsystem
DE10059561B4 (de) * 2000-11-30 2005-08-25 Siemens Ag Verfahren zum Betreiben eines Zugangskontrollsystems
DE10211930B4 (de) * 2002-03-18 2004-11-04 Siemens Ag Verfahren zur Kommunikation zwischen einer Basiseinheit und mehreren Identifikationsgebern eines Zugangskontrollsystems und Zugangskontrollsystem
AU2002952753A0 (en) * 2002-11-19 2003-01-16 Australian Arrow Pty Ltd Passive entry system
US7753245B2 (en) * 2007-06-22 2010-07-13 Ethicon Endo-Surgery, Inc. Surgical stapling instruments
US9129455B2 (en) * 2012-02-21 2015-09-08 Fca Us Llc System and method to enable passive entry

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US4495496A (en) * 1981-12-15 1985-01-22 Johnson Engineering Corp. Personnel monitoring and locating system
EP0285419B1 (fr) 1987-03-31 1994-08-24 Identec Limited Equipement de contrôle d'accès
US4837568A (en) 1987-07-08 1989-06-06 Snaper Alvin A Remote access personnel identification and tracking system
US5357141A (en) * 1988-04-02 1994-10-18 Robert Bosch Gmbh Electronic device
US4998249A (en) * 1988-10-28 1991-03-05 Executone Information Systems, Inc. Method and system for multiplexing telephone line circuits to highway lines
SE464946B (sv) * 1989-11-10 1991-07-01 Philips Norden Ab Oeverfoeringssystem innefattande en fraagestation och ett antal svarsstationer
US5640151A (en) * 1990-06-15 1997-06-17 Texas Instruments Incorporated Communication system for communicating with tags
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GB2259227B (en) * 1991-08-30 1995-10-18 Marconi Gec Ltd Improvements in or relating to transponders
DE4392671C2 (de) * 1992-06-10 2000-06-21 Ford Werke Ag Kommunikationssystem für Kraftfahrzeuge
DE4337637A1 (de) * 1993-11-04 1995-05-11 Licentia Gmbh Transponder und Datenkommunikationssystem
US5450087A (en) 1994-04-06 1995-09-12 Texas Instruments Incorporated Transponder maintenance mode method
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Title
See references of WO9820463A1 *

Also Published As

Publication number Publication date
US6982628B1 (en) 2006-01-03
EP0948779B1 (fr) 2004-06-02
AU716515B2 (en) 2000-02-24
WO1998020463A1 (fr) 1998-05-14
ES2222506T3 (es) 2005-02-01
AU5047598A (en) 1998-05-29

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