EP0106273B1 - Safety device - Google Patents

Safety device Download PDF

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Publication number
EP0106273B1
EP0106273B1 EP83109958A EP83109958A EP0106273B1 EP 0106273 B1 EP0106273 B1 EP 0106273B1 EP 83109958 A EP83109958 A EP 83109958A EP 83109958 A EP83109958 A EP 83109958A EP 0106273 B1 EP0106273 B1 EP 0106273B1
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EP
European Patent Office
Prior art keywords
transmitter
code signal
code
receiver
switch
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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
Application number
EP83109958A
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German (de)
French (fr)
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EP0106273A3 (en
EP0106273A2 (en
Inventor
Walter Weishaupt
Arnost Proske
Michael Tigges
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Publication of EP0106273A2 publication Critical patent/EP0106273A2/en
Publication of EP0106273A3 publication Critical patent/EP0106273A3/en
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    • 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
    • G07C9/00857—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys where the code of the data carrier can be programmed
    • 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
    • G07C9/00182—Electronically 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
    • 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
    • G07C2009/00753—Electronically 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
    • G07C2009/00769—Electronically 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
    • G07C2009/00785—Electronically 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
    • 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
    • G07C9/00857—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys where the code of the data carrier can be programmed
    • G07C2009/00865—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys where the code of the data carrier can be programmed remotely by wireless communication
    • 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
    • G07C9/00857—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys where the code of the data carrier can be programmed
    • G07C2009/00888—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys where the code of the data carrier can be programmed programming by learning

Definitions

  • the invention relates to a security device, in particular as a door lock or anti-theft device in a motor vehicle, each with a portable first and second transmitter and a receiver arranged on the object to be secured for a code signal that is at least partially changeable, in the transmitters and in Each receiver a code signal memory is provided.
  • Such a security device is known from DE-A 2906665, in which it is possible in principle to set a second transmitter to the valid code signal. However, this is only possible by manually setting the valid code on the second transmitter. To do this, a series of switches must be operated, from whose position the code signal is derived. Apart from this very uncomfortable handling, there is the problem that the uniqueness of the valid code signal is not guaranteed. This results from the high number of options for the choice of the valid code required by security against misuse.
  • the code signal is changed in connection with the actual security function, for example when a switching signal for opening the locking device is generated when the code signals from the transmitter and receiver match.
  • This joint reprogramming of the transmitter and receiver takes place either automatically with each such switching signal or after a predetermined number of such switching signals.
  • Due to the electronic, non-mechanical generation of the code signal for example in the form of a pulse code transmitted by UHF or IR, it is not externally recognizable which code signal is present or whether the code signal has changed compared to an earlier use of the security device.
  • the object of the invention is to create a security device of the type mentioned at the outset which, although it retains the possibility of changing the code signal, is user-friendly and can also be operated clearly with the aid of a second transmitter.
  • the invention solves this problem in that the code signal of the first transmitter is transmitted by an arbitrary command by this first transmitter itself and can be written into the code signal memory of the second transmitter.
  • the arbitrary change in the code signal offers the possibility of also providing the second transmitter with the respectively valid code signal. This can be done, for example, in the form described in more detail below.
  • the code signal only needs to be written into the memory of the second transmitter if it has been changed for the first transmitter. This change is, however, readily known, since it is deliberately made by the owner of the first broadcaster.
  • the code signal can be changed in different ways.
  • a particularly simple form is to give the command to change the code signal by means of a switch which is located on the housing of the associated transmitter.
  • the code signal in turn can be generated in various ways.
  • a code signal generator can be provided within the one (first) transmitter housing, which is activated when the switch is actuated.
  • the code signal generator can be, for example, a random or pseudo-random generator.
  • the latter can be implemented, for example, solely by a counter with a high clock frequency, the duty cycle of which is determined by the switch and remains at a value which is determined by the duration of operation of the switch.
  • Such a generator is also known in principle from DE-A-3 006128.
  • the switch can also activate the read input of the code signal memory at which the changed code signal is present.
  • This can be transmitted, for example, by another transmitter with a code signal generator. In this way it is possible to provide only one such transmitter which generates the respectively valid original code signal and passes it on to the other transmitters in the manner described.
  • a programming part which is, for example, a coding rod or a coding disk and can be inserted or rotated in the housing of the first transmitter, can also serve as the code signal generator.
  • the state of which can be selected manually, for example, the code signal corresponding to the state of the programming part can now be scanned within the transmitter housing and written into the associated memory.
  • This change in the code signal with the aid of another transmitter can be carried out in a particularly simple manner by using the actual transmission element of the transmitter as a reception element. This is easily possible with a correspondingly small distance between the two transmitters. In the case of a UHF signal, this possibility is known per se, since each antenna also acts as a transmission element.
  • a diode is used as the IR transmitter element, it also acts as a receiver and delivers an output signal with a sufficiently high level when the input power is high.
  • the stamping of a new code signal can be ensured by the transmitter housing having a shape that is complementary to that of the other ren, is the valid code signal emitting transmitter.
  • a security device in the form of a locking device for a motor vehicle contains a transmitter 1, the housing 2 of which contains several push buttons. These are pushbuttons 3 and 3 'for sending out a code signal contained in a memory, not shown, with the aid of an IR diode 4 for opening or closing the locking device, and further pushbuttons 5, 6 and 7, with the aid of which a new code signal is stored in the memory is readable.
  • the housing 2 also shows two further IR diodes 9, which are located in the vicinity of the diode 4 and laterally emit an interference signal, as described in DE-A-3149259 (published on June 23, 1983).
  • the pushbuttons 6 or 7 released after a cover 8 is pushed back into the first or second latching position make it possible to change one of the two variable parts of the code signal. If the push button 6 is actuated, only the so-called change code is changed, but when the push button 7 is actuated the so-called owner code is changed in accordance with a generated new code signal.
  • change and owner code and the special way of changing it can be found in DE-AB-2 928 913.
  • the generation of one of the two partial codes takes place in such a way that when the pushbutton 6 or 7 is pressed, a fast-moving one contained in the housing 2 Counter is started and stopped when the pushbutton is released. The current meter reading is read into the memory as a new change or owner code.
  • a new code signal consisting of a change and owner code can be entered into the memory. If a corresponding code signal is present at transmitter 1, this is recorded with the aid of diode 4, which also acts as a receiver.
  • the transmitter 1 corresponding in structure to the transmitter 1 is, for example, 'as compared with that its corresponding one of the diode 4 transmitting diode 4' this is just opposite, and the code signal from the first station 1 by pressing the corresponding push-button 3 and 3 'sent out.
  • the orientation of the transmitters 1 and 1 ' is facilitated by the complementary design of the housings 2 and 2' of the transmitters 1 and 1 'in the form of cams 10 and 10' and receptacles 11 and 11 '. Furthermore, a light-emitting diode 12 is provided in the housing 2, which serves as an operating aid. It lights up when the stored code signal is sent out with pushbuttons 3 or 3 'or when an externally applied new code signal has been stored after pushbutton 5.
  • FIG. 2 An alternative to the code signal generation is shown in FIG. 2.
  • a new code signal is entered into the memory of the transmitter 1 with the aid of a coding rod 13, which can be inserted into the housing 2.
  • Two transmitted light light barriers 14 sit in the latter and, when the coding rod 13 is inserted, scan the code information which determines the code signal and is arranged one behind the other. This information is available on ten successive double fields 15, which can be provided with an erasable line marking 16 in different ways.

Description

Die Erfindung bezieht sich auf eine Sicherheitseinrichtung, insbesondere als Türverriegelung oder Diebstahlschutz in einem Kraftfahrzeug, mit jeweils einem tragbaren ersten und zweiten Sender und einem an dem zu sichernden Gegenstand angeordneten Empfänger für ein Codesignal, das zumindest teilweise veränderbar ist, wobei in den Sendern und im Empfänger jeweils ein Codesignal-Speicher vorgesehen ist.The invention relates to a security device, in particular as a door lock or anti-theft device in a motor vehicle, each with a portable first and second transmitter and a receiver arranged on the object to be secured for a code signal that is at least partially changeable, in the transmitters and in Each receiver a code signal memory is provided.

Aus der DE-A 2906665 ist eine derartige Sicherheitseinrichtung bekannt, bei der es im Prinzip möglich ist, einen zweiten Sender auf das gültige Codesignal einzustellen. Dies ist jedoch nur in der Weise möglich, dass am zweiten Sender selbst manuell der gültige Code eingestellt wird. Hierzu ist eine Reihe von Schaltern zu betätigen, aus deren Stellung sich das Codesignal ableitet. Abgesehen von dieser sehr unbequemen Handhabung besteht das Problem, dass die Eindeutigkeit des gültigen Codesignals nicht gewährleistet ist. Dies ergibt sich aus der durch die Sicherheit vor Missbrauch erforderliche hohe Zahl von Möglichkeiten für die Wahl des gültigen Codes.Such a security device is known from DE-A 2906665, in which it is possible in principle to set a second transmitter to the valid code signal. However, this is only possible by manually setting the valid code on the second transmitter. To do this, a series of switches must be operated, from whose position the code signal is derived. Apart from this very uncomfortable handling, there is the problem that the uniqueness of the valid code signal is not guaranteed. This results from the high number of options for the choice of the valid code required by security against misuse.

Bei einer weiteren bekannten Sicherheitseinrichtung (vgl. DE-A 2906665) erfolgt die Veränderung des Codesignals im Zusammenhang mit der eigentlichen Sicherheitsfunktion beispielsweise dann, wenn bei Übereinstimmung der Codesignale von Sender und Empfänger ein Schaltsignal zum Öffnen der Schliesseinrichtung erzeugt wird. Dieses gemeinsame Umprogrammieren von Sender und Empfänger erfolgt entweder bei jedem derartigen Schaltsignal oder nach einer vorgegebenen Anzahl von derartigen Schaltsignalen jeweils selbsttätig. Daraus ergibt sich das Problem, dass die Benutzung der Sicherheitseinrichtung mit Hilfe eines zweiten Senders nicht oder zumindest nur mit erheblichen Schwierigkeiten möglich ist. Aufgrund der elektronischen, nicht-mechanischen Erzeugung des Codesignals, beispielsweise in Form eines mittels UHF- oder IR-übertragenen Impulscode ist äusserlich nicht erkennbar, welches Codesignal vorliegt bzw. ob das Codesignal gegenüber einer früheren Benutzung der Sicherheitseinrichtung geändert ist.In another known security device (cf. DE-A 2906665), the code signal is changed in connection with the actual security function, for example when a switching signal for opening the locking device is generated when the code signals from the transmitter and receiver match. This joint reprogramming of the transmitter and receiver takes place either automatically with each such switching signal or after a predetermined number of such switching signals. This results in the problem that the use of the safety device with the aid of a second transmitter is not possible, or at least only with considerable difficulty. Due to the electronic, non-mechanical generation of the code signal, for example in the form of a pulse code transmitted by UHF or IR, it is not externally recognizable which code signal is present or whether the code signal has changed compared to an earlier use of the security device.

Der Erfindung liegt die Aufgabe zugrunde, eine Sicherheitseinrichtung der eingangs genannten Art zu schaffen, die zwar die Möglichkeit, das Codesignal zu verändern, beibehält, die jedoch benutzerfreundlich und eindeutig auch mit Hilfe eines zweiten Senders zu betreiben ist.The object of the invention is to create a security device of the type mentioned at the outset which, although it retains the possibility of changing the code signal, is user-friendly and can also be operated clearly with the aid of a second transmitter.

Die Erfindung löst diese Aufgabe dadurch, dass das Codesignal des ersten Senders auf einen willkürlichen Befehl hin durch diesen ersten Sender selbst ausgesandt wird und in den Codesignal-Speicher des zweiten Senders einschreibbar ist.The invention solves this problem in that the code signal of the first transmitter is transmitted by an arbitrary command by this first transmitter itself and can be written into the code signal memory of the second transmitter.

Die willkürliche Änderung des Codesignals bietet die Möglichkeit, auch den zweiten Sender mit dem jeweils gültigen Codesignal zu versehen. Dies kann beispielsweise in der Form geschehen, wie dies weiter unten näher beschrieben wird. Das Codesignal braucht nur dann in den Speicher des zweiten Senders eingeschrieben zu werden, wenn es für den ersten Sender geändert ist. Diese Änderung ist aber ohne weiteres bekannt, da sie durch den Inhaber des ersten Senders bewusst vorgenommen wird.The arbitrary change in the code signal offers the possibility of also providing the second transmitter with the respectively valid code signal. This can be done, for example, in the form described in more detail below. The code signal only needs to be written into the memory of the second transmitter if it has been changed for the first transmitter. This change is, however, readily known, since it is deliberately made by the owner of the first broadcaster.

Das Codesignal kann auf verschiedene Weise geändert werden. Eine besonders einfache Form besteht darin, den Befehl zum Ändern des Codesignals durch einen Schalter zu geben, der am Gehäuse des zugehörigen Senders sitzt.The code signal can be changed in different ways. A particularly simple form is to give the command to change the code signal by means of a switch which is located on the housing of the associated transmitter.

Das Codesignal seinerseits kann dabei in verschiedener Weise erzeugt werden. So kann innerhalb des einen (ersten) Sender-Gehäuses ein Codesignal-Generator vorgesehen sein, der bei Betätigen des Schalters aktiviert wird. Der Codesignal-Generator kann beispielsweise ein Zufalls-oder Pseudo-Zufallsgenerator sein. Letzterer kann beispielsweise allein durch einen Zähler mit hoher Taktfrequenz realisiert werden, dessen Einschaltdauer durch den Schalter bestimmt wird und auf einem durch die Betätigungsdauer des Schalters festgelegten Wert stehen bleibt. Ein derartiger Generator ist ebenfalls aus der DE-A-3 006128 im Prinzip bekannt.The code signal in turn can be generated in various ways. Thus, a code signal generator can be provided within the one (first) transmitter housing, which is activated when the switch is actuated. The code signal generator can be, for example, a random or pseudo-random generator. The latter can be implemented, for example, solely by a counter with a high clock frequency, the duty cycle of which is determined by the switch and remains at a value which is determined by the duration of operation of the switch. Such a generator is also known in principle from DE-A-3 006128.

Alternativ hierzu kann der Schalter auch den Leseeingang des Codesignal-Speichers aktivieren, an dem das geänderte Codesignal anliegt. Dieses kann beispielsweise durch einen anderen Sender mit Codesignal-Generator ausgesandt werden. Auf diese Weise ist es möglich, lediglich einen derartigen Sender vorzusehen, der das jeweils gültige Ur-Codesignal erzeugt und dieses an die anderen Sender in der beschriebenen Weise weitergibt.As an alternative to this, the switch can also activate the read input of the code signal memory at which the changed code signal is present. This can be transmitted, for example, by another transmitter with a code signal generator. In this way it is possible to provide only one such transmitter which generates the respectively valid original code signal and passes it on to the other transmitters in the manner described.

Als Codesignal-Generator kann auch ein Programmierteil dienen, das beispielsweise ein Codierstab oder eine Codierscheibe ist und in das Gehäuse des ersten Senders einschiebbar bzw. darin verdrehbar ist. Mit Hilfe des Programmierteils, dessen Zustand beispielsweise manuell wählbar ist, kann nun innerhalb des Sendergehäuses das dem Zustand des Programmierteils entsprechende Codesignal abgetastet und in den zugehörigen Speicher eingeschrieben werden.A programming part, which is, for example, a coding rod or a coding disk and can be inserted or rotated in the housing of the first transmitter, can also serve as the code signal generator. With the aid of the programming part, the state of which can be selected manually, for example, the code signal corresponding to the state of the programming part can now be scanned within the transmitter housing and written into the associated memory.

Dieses Ändern des Codesignals mit Hilfe eines anderen Senders kann auf besonders einfache Weise dadurch vorgenommen werden, dass das eigentliche Sendeelement des Senders als Empfangselement verwendet wird. Dies ist bei entsprechend geringem Abstand der beiden Sender ohne weiteres möglich. Im Falle eines UHF-Signals ist diese Möglichkeit an sich bekannt, da jede Antenne auch als Sendeelement wirkt.This change in the code signal with the aid of another transmitter can be carried out in a particularly simple manner by using the actual transmission element of the transmitter as a reception element. This is easily possible with a correspondingly small distance between the two transmitters. In the case of a UHF signal, this possibility is known per se, since each antenna also acts as a transmission element.

Es ist nun aber auch möglich, bei einem IR-Codesignal dieselbe Massnahme zu realisieren. Verwendet man als IR-Sendeelement eine Diode, so wirkt diese auch als Empfänger und liefert bei grosser Eingangsleistung ein Ausgangssignal mit hinreichend hohem Pegel. Dabei lässt sich das Aufprägen eines neuen Codesignals dadurch sicherstellen, dass das Sender-Gehäuse eine Form besitzt, die komplementär zu der des anderen, das gültige Codesignal ausstrahlenden Senders ist.However, it is now also possible to implement the same measure for an IR code signal. If a diode is used as the IR transmitter element, it also acts as a receiver and delivers an output signal with a sufficiently high level when the input power is high. The stamping of a new code signal can be ensured by the transmitter housing having a shape that is complementary to that of the other ren, is the valid code signal emitting transmitter.

In der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt und im folgenden näher erläutert. Es zeigt:

  • Fig. 1 zwei gleich programmierbare IR-Sender für ein Codesignal im Rahmen einer Sicherheitseinrichtung und
  • Fig. 2 einen alternativen Sender hierzu.
Exemplary embodiments of the invention are shown in the drawing and explained in more detail below. It shows:
  • Fig. 1 two identically programmable IR transmitters for a code signal in the context of a security device and
  • Fig. 2 shows an alternative transmitter for this.

Eine nicht im einzelnen dargestellte Sicherheitseinrichtung in Form einer Schliesseinrichtung für ein Kraftfahrzeug enthält einen Sender 1, dessen Gehäuse 2 mehrere Drucktasten enthält. Es sind dies Drucktasten 3 und 3' zum Aussenden eines in einem nicht dargestellten Speicher enthaltenen Codesignals mit Hilfe einer IR-Diode 4 zum Öffnen bzw. Schliessen der Schliesseinrichtung sowie weitere Drucktasten 5, 6 und 7, mit deren Hilfe ein neues Codesignal in den Speicher einlesbar ist. Das Gehäuse 2 zeigt ferner zwei weitere IR-Dioden 9, die in der Nähe der Diode 4 sitzen und seitlich ein Störsignal aussenden, wie es in der DE-A-3149259 (veröffentlicht am 23.6.1983) beschrieben ist.A security device, not shown in detail, in the form of a locking device for a motor vehicle contains a transmitter 1, the housing 2 of which contains several push buttons. These are pushbuttons 3 and 3 'for sending out a code signal contained in a memory, not shown, with the aid of an IR diode 4 for opening or closing the locking device, and further pushbuttons 5, 6 and 7, with the aid of which a new code signal is stored in the memory is readable. The housing 2 also shows two further IR diodes 9, which are located in the vicinity of the diode 4 and laterally emit an interference signal, as described in DE-A-3149259 (published on June 23, 1983).

Die nach Zurückschieben einer Abdeckung 8 in die erste bzw. zweite Raststellung freigegebenen Drucktasten 6 oder 7 ermöglichen einen der beiden veränderlichen Teile des Codesignals zu ändern. Wird die Drucktaste 6 betätigt, so wird nur der sog. Wechselcode, bei Betätigen der Drucktaste 7 hingegen der sog. Besitzercode entsprechend einem erzeugten neuen Codesignal geändert. Die Unterscheidung zwischen Wechsel-und Besitzercode und die besondere Art ihrer Änderung findet sich in der DE-AB-2 928 913. Die Erzeugung eines der beiden Teilcodes geschieht in der Weise, dass bei Drücken der Drucktaste 6 oder 7 ein im Gehäuse 2 enthaltener schnellaufender Zähler gestartet und bei Loslassen der Drucktaste angehalten wird. Der aktuelle Zählerstand wird als neuer Wechsel- bzw. Besitzercode in den Speicher eingelesen.The pushbuttons 6 or 7 released after a cover 8 is pushed back into the first or second latching position make it possible to change one of the two variable parts of the code signal. If the push button 6 is actuated, only the so-called change code is changed, but when the push button 7 is actuated the so-called owner code is changed in accordance with a generated new code signal. The distinction between change and owner code and the special way of changing it can be found in DE-AB-2 928 913. The generation of one of the two partial codes takes place in such a way that when the pushbutton 6 or 7 is pressed, a fast-moving one contained in the housing 2 Counter is started and stopped when the pushbutton is released. The current meter reading is read into the memory as a new change or owner code.

Nach Betätigen der Drucktaste 5 kann ein aus Wechsel- und Besitzercode bestehendes neues Codesignal in den Speicher eingegeben werden. Liegt ein entsprechendes Codesignal am Sender 1 an, so wird dieses mit Hilfe der Diode 4 aufgenommen, die auch als Empfänger wirkt. Hierzu wird beispielsweise ein zweiter, dem Sender 1 in seinem Aufbau entsprechender Sender 1' so gegenüber gestellt, dass dessen der Diode 4 entsprechende Sendediode 4' dieser genau gegenüber liegt, und das Codesignal des ersten Senders 1 durch Betätigen der entsprechenden Drucktasten 3 bzw. 3' ausgesandt. Durch komplementäre Gestaltung der Gehäuse 2 bzw. 2' der Sender 1 bzw. 1' in Form von Nocken 10 bzw. 10' und Aufnahmen 11 bzw 11' wird die Orientierung der Sender 1 und 1' erleichtert. Ferner ist eine Leuchtdiode 12 im Gehäuse 2 vorgesehen, die als Bedienhilfe dient. Sie leuchtet, wenn mittels der Drucktasten 3 bzw. 3' das gespeicherte Codesignal ausgesandt wird bzw. wenn nach Drücken der Drucktaste 5 ein extern angesandtes neues Codesignal gespeichert worden ist.After pressing pushbutton 5, a new code signal consisting of a change and owner code can be entered into the memory. If a corresponding code signal is present at transmitter 1, this is recorded with the aid of diode 4, which also acts as a receiver. For this purpose, a second, the transmitter 1 corresponding in structure to the transmitter 1 is, for example, 'as compared with that its corresponding one of the diode 4 transmitting diode 4' this is just opposite, and the code signal from the first station 1 by pressing the corresponding push-button 3 and 3 'sent out. The orientation of the transmitters 1 and 1 'is facilitated by the complementary design of the housings 2 and 2' of the transmitters 1 and 1 'in the form of cams 10 and 10' and receptacles 11 and 11 '. Furthermore, a light-emitting diode 12 is provided in the housing 2, which serves as an operating aid. It lights up when the stored code signal is sent out with pushbuttons 3 or 3 'or when an externally applied new code signal has been stored after pushbutton 5.

Auf diese Weise ist es möglich, allein das Codesignal des Senders 1 willkürlich zu verändern. Dies erfolgt unabhängig von der Veränderung des Codesignals in dem Speicher eines nicht dargestellten, mit dem zu sichernden Gegenstand verbundenen Empfängers. Die willkürliche Änderung allein des Codesignals für den Sender bietet den Vorteil, dass sie nur dann vorgenommen zu werden braucht, wenn das für die Sicherheitseinrichtung massgebliche Codesignal geändert ist. Einem zweiten Sender, wie beispielsweise dem dargestellten Sender 11 kann das massgebliche Codesignal ohne weiteres aufgeprägt werden. Ferner sind Fehler, die bei der Aufnahme des Codesignals im Speicher des Senders auftreten, ohne gravierenden Einfluss auf die Funktion der Sicherheitseinrichtung. Ein derartiger Fehler kann durch erneutes Einlesen des massgeblichen Codesignals in den Speicher des Senders 1 behoben werden. Folgt hingegen die Umcodierung von Sender und Empfänger gleichzeitig, so führt ein derartiger Fehler zu einer Diskrepanz der Codesignale von Sender und Empfänger. Die Folge davon ist, dass die Sicherheitseinrichtungen unwirksam bzw. unbrauchbarwird.In this way it is possible to arbitrarily change the code signal of the transmitter 1 alone. This is done regardless of the change in the code signal in the memory of a receiver, not shown, connected to the object to be secured. The arbitrary change of the code signal for the transmitter alone has the advantage that it only needs to be carried out if the code signal relevant for the security device has been changed. The relevant code signal can easily be impressed on a second transmitter, such as the transmitter 11 shown. Furthermore, errors that occur when the code signal is recorded in the memory of the transmitter have no serious influence on the function of the security device. Such an error can be remedied by reading the relevant code signal into the memory of the transmitter 1 again. If, on the other hand, the transcoding of transmitter and receiver follows at the same time, such an error leads to a discrepancy in the code signals from the transmitter and receiver. The consequence of this is that the safety devices become ineffective or unusable.

Eine Alternative zu der Codesignal-Generierung ist in Fig. 2 gezeigt. Hierbei erfolgt die Eingabe eines neuen Codesignals in den Speicher des Senders 1 mit Hilfe eine Codierstabs 13, der in das Gehäuse 2 einschiebbar ist. In diesem sitzen zwei Durchlicht-Lichtschranken 14, die bei Einschieben des Codierstabs 13 die das Codesignal bestimmenden, hintereinander angeordneten Codeinformationen abtasten. Diese Informationen liegen auf zehn hintereinander liegenden Doppelfeldern 15 vor, die unterschiedlich mit einer löschbaren Strichmarkierung 16 versehen werden können.An alternative to the code signal generation is shown in FIG. 2. Here, a new code signal is entered into the memory of the transmitter 1 with the aid of a coding rod 13, which can be inserted into the housing 2. Two transmitted light light barriers 14 sit in the latter and, when the coding rod 13 is inserted, scan the code information which determines the code signal and is arranged one behind the other. This information is available on ten successive double fields 15, which can be provided with an erasable line marking 16 in different ways.

Mit dem Codierstab 13 von Fig. 2 ist es ebenfalls möglich, einen Sender 1 unabhängig vom Empfänger umzuprogrammieren.With the coding rod 13 of FIG. 2 it is also possible to reprogram a transmitter 1 independently of the receiver.

Claims (7)

1. A security device, especially as a door lock or anti-theft device in a motor vehicle, having in each case a portable first and second transmitter (1 and 1') and a receiver, arranged on the article to be secured, for a code signal which is at least partially variable, a code signal store being provided in each of the transmitters (1 and 1') and in the receiver, characterised in that the code signal of the first transmitter (1) is transmitted by this first transmitter itself upon a voluntary command and is recordable in the code signal store of the second transmitter (1').
2. A device according to Claim 1, characterised in that the command is given by a switch.
3. A device according to Claim 2, characterised in that the switch (press button 6 and 7) activates a code signal generator in the first transmitter (1).
4. A device according to Claim 2, characterised in that the switch (press button 5) activates the code signal store for the reception of the code signal transmitted by the first transmitter.
5. A device according to Claim 4, characterised in that the second transmitter (1') contains a transmitter element (diode 4') which serves at the same time as a code signal receiver.
6. A device according to Claim 5, characterised in that the transmitter element is a diode (4') which transmits an infra-red code signal.
7. A device according to Claim 1, characterised in that the command is given by a code rod (13) of the first transmitter (1) which can be pushed into the housing (2) of this transmitter (1) and contains a variable programming.
EP83109958A 1982-10-11 1983-10-05 Safety device Expired EP0106273B1 (en)

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DE19823237622 DE3237622A1 (en) 1982-10-11 1982-10-11 SECURITY DEVICE
DE3237622 1982-10-11

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EP0106273A3 EP0106273A3 (en) 1984-08-15
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Also Published As

Publication number Publication date
US4652860A (en) 1987-03-24
EP0106273A3 (en) 1984-08-15
DE3371548D1 (en) 1987-06-19
DE3237622A1 (en) 1984-04-12
EP0106273A2 (en) 1984-04-25

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