DE10111552A1 - Mobile transponder for vehicles stores Global Positioning System data relating to vehicle position and displays direction information to user based on derived direction information - Google Patents

Mobile transponder for vehicles stores Global Positioning System data relating to vehicle position and displays direction information to user based on derived direction information

Info

Publication number
DE10111552A1
DE10111552A1 DE2001111552 DE10111552A DE10111552A1 DE 10111552 A1 DE10111552 A1 DE 10111552A1 DE 2001111552 DE2001111552 DE 2001111552 DE 10111552 A DE10111552 A DE 10111552A DE 10111552 A1 DE10111552 A1 DE 10111552A1
Authority
DE
Germany
Prior art keywords
vehicle
transponder
direction information
positioning system
data relating
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.)
Withdrawn
Application number
DE2001111552
Other languages
German (de)
Inventor
Stephan Augustin
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Priority to DE2001111552 priority Critical patent/DE10111552A1/en
Priority to DE2001112994 priority patent/DE10112994A1/en
Publication of DE10111552A1 publication Critical patent/DE10111552A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/20—Means to switch the anti-theft system on or off
    • B60R25/25—Means to switch the anti-theft system on or off using biometry
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/20—Means to switch the anti-theft system on or off
    • B60R25/25—Means to switch the anti-theft system on or off using biometry
    • B60R25/252—Fingerprint recognition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/30—Detection related to theft or to other events relevant to anti-theft systems
    • B60R25/33—Detection related to theft or to other events relevant to anti-theft systems of global position, e.g. by providing GPS coordinates
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/14—Receivers specially adapted for specific applications
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/35—Constructional details or hardware or software details of the signal processing chain
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
    • G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/42—Determining position
    • G01S19/51—Relative positioning
    • 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
    • G07C9/00944—Details of construction or manufacture
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mechanical Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Manufacturing & Machinery (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

The transponder has a visual display for indicating the location of the vehicle in relation to the transponder. The transponder has a GPS (Global Positioning System) receiver for determining the position of the transponder. The transponder compares its own position with the position of the vehicle and derives direction information (6') for display. The transponder has a memory for storing the GPS Data relating to he position of the vehicle when the vehicle is left.

Description

Die Erfindung bezieht sich auf einen mobilen Transponder für ein Fahrzeug mit einer optischen Anzeige.The invention relates to a mobile transponder for a vehicle an optical display.

Ein derartiger Transponder als Bestandteil eines Fahrzeugsschlüssels ist aus der DE 198 20 921 A1 bekannt. Dabei wird über die optische Anzeige sichtbar gemacht, wo sich das Fahrzeug befindet. Hierzu wird das Fahrzeug mittels eines Funksignals durch den Transponder angesprochen. Aus der Richtung des von dort ausgehenden Positionssignals wird die relative Lage des Transponders durch diesen bestimmt und am Transponder durch eine richtungsselektive Anzeige kenntlich gemacht.Such a transponder as part of a vehicle key is from the DE 198 20 921 A1 known. The visual display shows where the vehicle is located. To do this, the vehicle uses a radio signal addressed by the transponder. From the direction of the outgoing from there Position signal, the relative position of the transponder is determined by this and identified on the transponder by a direction-selective display.

Der Erfindung liegt die Aufgabe zugrunde, einen mobilen Transponder für Fahrzeuge zu schaffen, der eine Aussage über die Lage des Fahrzeugs auch dann liefert, wenn ein ungestörter Funkkontakt zwischen dem Fahrzeug und dem Transponder nicht möglich ist.The invention has for its object a mobile transponder for To create vehicles that make a statement about the location of the vehicle even then delivers when there is undisturbed radio contact between the vehicle and the Transponder is not possible.

Gelöst wird diese Aufgabe durch die Merkmale des Patentanspruchs 1.This object is achieved by the features of patent claim 1.

An die Stelle eines vom Fahrzeug ausgehenden Funksignals treten nun GPS- Informationen über die Lage des Transponders und des Fahrzeugs. Beide Informationen werden in den zugehörigen Komponenten Transponder bzw. Fahrzeug gewonnen. Aus dem Vergleich der beiden Positionen wird im Schlüssel eine Richtungsinformation für die Lage des Fahrzeugs relativ zum Transponder erzeugt.Instead of a radio signal coming from the vehicle, GPS Information about the location of the transponder and the vehicle. Both Information is stored in the associated transponder or Vehicle won. The comparison of the two positions becomes the key a directional information for the position of the vehicle relative to the transponder generated.

Die GPS-Daten bezüglich der Lage des Fahrzeugs können fahrzeugintern beim Abstellen oder beim Verschließen des Fahrzeugs oder bedarfsweise (beim Auffinden des Fahrzeugs) gewonnen werden und im Transponder gespeichert oder aber dort ohne Speicherung nur zum Auffinden des Fahrzeugs mit den aktuellen Positionsdaten des Transponders verarbeitet werden. Im letztem Fall erfolgt die Übertragung der Fahrzeugpositionsdaten erst bei Anforderung, beispielsweise per Funk durch den Transponder.The GPS data regarding the position of the vehicle can be found inside the vehicle Park or when locking the vehicle or if necessary (when Locating the vehicle) and saved in the transponder or but there without saving only to find the vehicle with the current one Position data of the transponder are processed. In the latter case, the  Transmission of the vehicle position data only when requested, for example by Radio through the transponder.

Die optische Anzeige kann wie in der DE 198 20 921 A1 in verschiedenen Formen beschrieben ausgebildet sein.As in DE 198 20 921 A1, the visual display can take various forms be described.

Anhand der Zeichnung ist die Erfindung weiter erläutert. Es zeigen die Fig. 1 bis 4 vier Ausführungsbeispiele der Erfindung jeweils in der Draufsicht.The invention is further explained on the basis of the drawing. There, Figs. 1 to 4 four embodiments of the invention respectively in plan view.

Ein in Fig. 1 gezeigter mobiler Transponder 1 ist in einem mechanischen Fahrzeug- Schlüssel 2 integriert. Der Transponder 1 enthält einen GPS-Chip, einen Speicher und eine Recheneinheit (nicht dargestellt) sowie eine Antenne 3, die im Schlüsselbart 4 enthalten ist.A shown in FIG. 1, mobile transponder 1 is integrated into a mechanical vehicle key. 2 The transponder 1 contains a GPS chip, a memory and a computing unit (not shown) and an antenna 3 , which is contained in the key bit 4 .

Die Antenne 3 sendet auf einen manuell aufgegebenen Befehl hin jeweils ein Fragesignal aus, das von dem gesuchten Fahrzeug aufgenommen wird und durch Ausgabe jeweils eines Antwortsignals durch das Fahrzeug beantwortet wird. Dieses Fragesignal wird durch Betätigen einer Fernbedienungstaste 5 im Schlüssel 2 aufgegeben und dient gleichzeitig als Befehl zum Verriegeln des Fahrzeugs nach dem Abstellen. Wird das Fragesignal bei dieser Gelegenheit aufgegeben, liefert das Fahrzeug dann gleich das Antwortsignal.In response to a manually issued command, the antenna 3 sends out a question signal which is picked up by the vehicle sought and which is answered by the vehicle by outputting a response signal. This question signal is given by pressing a remote control button 5 in the key 2 and at the same time serves as a command to lock the vehicle after it has been parked. If the question signal is given up on this occasion, the vehicle then immediately delivers the answer signal.

Das Antwortsignal des Fahrzeugs enthält eine Information über den Standort des Fahrzeugs. Diese Information wird fahrzeugintern im Rahmen eines dort installierten Navigationssystem (nicht dargestellt) gewonnen. Sie besteht aus GPS-Daten für den absoluten Standort des Fahrzeugs und wird mit dem Speicher im Schlüssel 2 vorgehalten.The response signal of the vehicle contains information about the location of the vehicle. This information is obtained inside the vehicle as part of a navigation system (not shown) installed there. It consists of GPS data for the absolute location of the vehicle and is held in memory in key 2 .

Zum Wiederauffinden seines Fahrzeugs dient eine optische Anzeige 6, die in der Oberfläche des Schlüsselkopfes 7 angeordnet ist. Die Anzeige 6 besteht aus im Kreis angeordneten LEDs. Von diesen wird die in der Richtung des gesuchten Fahrzeuges gelegene LED 6' aktiviert. Bei einer waagrechten Anordnung des Schlüsselkopfes 8 ist durch die gedachte Verbindung von der Mitte des Schlüsselkopfs 8 über diese LED 6' hinaus die Richtung bestimmt, in der sich das gesuchte Fahrzeug befindet.An optical display 6 , which is arranged in the surface of the key head 7 , serves to find his vehicle again. The display 6 consists of LEDs arranged in a circle. Of these, the LED 6 'located in the direction of the vehicle sought is activated. In the case of a horizontal arrangement of the key head 8 , the imaginary connection from the center of the key head 8 via this LED 6 'determines the direction in which the vehicle sought is located.

Diese Richtungsinformation wird aus dem Vergleich der aktuellen Position des Transponders 1 und der im Speicher gespeicherten Position des Fahrzeugs erzeugt. Die aktuelle Position wird mit Hilfe des GPS-Chips aus den GPS- Informationen der GPS-Satelliten gewonnen, die mit der Antenne 3 aufgenommen werden. Mit Hilfe eines im Schlüssel 2 angeordneten Erdmagnetfeldsensors (nicht gezeigt) wird die Ausrichtung des Schlüssels 2 in Bezug auf den Richtungsvektor zwischen Transponder 1 und Fahrzeug justiert.This directional information is generated from the comparison of the current position of the transponder 1 and the position of the vehicle stored in the memory. The current position is obtained with the help of the GPS chip from the GPS information from the GPS satellites, which are recorded with the antenna 3 . With the help of an earth magnetic field sensor (not shown) arranged in the key 2 , the orientation of the key 2 is adjusted with respect to the direction vector between transponder 1 and vehicle.

Damit ist es möglich, auch bei eingeschränkter Funkverbindung zwischen Fahrzeug und Transponder 1 die Lage des Fahrzeugs präzise anzugeben.This makes it possible to precisely indicate the position of the vehicle even when the radio connection between the vehicle and transponder 1 is restricted.

Beim Ausführungsbeispiel von Fig. 2 ist die optische Anzeige in Form eines Richtungspfeils 9 ausgebildet, dessen Ausrichtung variabel ausgebildet ist. Alternativ kann der Pfeil so gestaltet sein, dass er lagefest ist und nur dann beleuchtet wird, wenn die vorgegebene Richtung mit der tatsächlichen Richtung des Fahrzeugs in Bezug auf den Transponder 1 übereinstimmt.In the embodiment of FIG. 2, the optical display is in the form of a directional arrow 9 , the orientation of which is variable. Alternatively, the arrow can be designed in such a way that it is fixed in position and is only illuminated if the predefined direction corresponds to the actual direction of the vehicle with respect to the transponder 1 .

Das Ausführungsbeispiel von Fig. 3 und von 4 entspricht weitgehend den Beispielen von Fig. 1 und 2. Es ist lediglich anstelle eines Fahrzeugschlüssels eine Armbanduhr 11 der Träger der Richtungsinformation. Die Antenne 12 sitzt nunmehr im Armband 13. Als Auslöser für das Fragesignal bzw. die Anzeige dient ein Druckknopf 14, der seitlich am Gehäuse 15 angeordnet ist.The exemplary embodiment of FIGS. 3 and 4 largely corresponds to the examples of FIGS. 1 and 2. Instead of a vehicle key, a wristwatch 11 is the carrier of the directional information. The antenna 12 is now seated in the bracelet 13 . A push button 14 , which is arranged on the side of the housing 15 , serves as a trigger for the question signal or the display.

Mit sämtlichen Ausführungen ist es möglich, die Lage des Fahrzeugs in Bezug zum Fahrzeugbenutzer anzuzeigen.With all versions, it is possible to determine the position of the vehicle in relation to Display vehicle users.

Claims (5)

1. Mobiler Transponder für Fahrzeuge, mit einer optischen Anzeige für den Standort des Fahrzeugs in Bezug zum Transponder, dadurch gekennzeichnet, dass der mobile Transponder 1 einen GPS-Empfänger enthält und die Position, in der sich der Transponder befindet, ermittelt, und dass der Transponder die eigene Position mit der Position des Fahrzeugs vergleicht und aus dem Vergleich der beiden eine Richtungsinformationen (6', 9) ableitet und anzeigt dergestalt, in welcher Richtung sich das Fahrzeug in Bezug auf die Position des Transponders befindet.1. Mobile transponder for vehicles, with an optical display for the location of the vehicle in relation to the transponder, characterized in that the mobile transponder 1 contains a GPS receiver and determines the position in which the transponder is located, and that the The transponder compares its own position with the position of the vehicle and derives direction information ( 6 ', 9 ) from the comparison of the two and thus displays the direction in which the vehicle is in relation to the position of the transponder. 2. Transponder nach Anspruch 1, dadurch gekennzeichnet, dass der Transponder einen Speicher für GPS-Daten enthält und darin die Position des Fahrzeugs beim Verlassen des Fahrzeugs vorhält.2. Transponder according to claim 1, characterized in that the transponder contains a memory for GPS data and therein the position of the vehicle at Leaves the vehicle. 3. Transponder nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Position des Fahrzeugs aus fahrzeugintern vorliegenden GPS-Daten gewonnen wird.3. Transponder according to claim 1 or 2, characterized in that the position of the vehicle is obtained from GPS data present in the vehicle. 4. Transponder nach Anspruch 3, dadurch gekennzeichnet, dass die Position des Fahrzeugs beim Abstellen des Antriebsaggregats in den Speicher eingelesen wird.4. Transponder according to claim 3, characterized in that the position of the Vehicle is read into the memory when the drive unit is switched off. 5. Transponder nach Anspruch 1 bis 3, dadurch gekennzeichnet, dass die Position des Fahrzeugs bedarfsweise übermittelt wird.5. Transponder according to claim 1 to 3, characterized in that the position the vehicle is transmitted as needed.
DE2001111552 2001-03-10 2001-03-10 Mobile transponder for vehicles stores Global Positioning System data relating to vehicle position and displays direction information to user based on derived direction information Withdrawn DE10111552A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE2001111552 DE10111552A1 (en) 2001-03-10 2001-03-10 Mobile transponder for vehicles stores Global Positioning System data relating to vehicle position and displays direction information to user based on derived direction information
DE2001112994 DE10112994A1 (en) 2001-03-10 2001-03-17 Mobile transponder for vehicle position indication has GPS receiver, stores position of transponder on leaving vehicle as vehicle position

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2001111552 DE10111552A1 (en) 2001-03-10 2001-03-10 Mobile transponder for vehicles stores Global Positioning System data relating to vehicle position and displays direction information to user based on derived direction information

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DE10111552A1 true DE10111552A1 (en) 2002-09-12

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007137655A1 (en) 2006-05-25 2007-12-06 Daimler Ag Device for retrieving a parked vehicle
US7358894B2 (en) 2004-05-04 2008-04-15 Volkswagen Aktiengesellschaft Key for a vehicle
DE102008034230A1 (en) 2007-08-15 2009-02-26 Daimler Ag Method for determining a vehicle position
DE102008033744A1 (en) 2008-07-18 2009-03-12 Daimler Ag Vehicle i.e. bus, locating method for use during city walking tour, involves outputting warning signal depending on difference between time of arrival of vehicle and remaining time up to preset time
WO2009095472A2 (en) * 2008-01-31 2009-08-06 Continental Teves Ag & Co. Ohg Vehicle key
DE102005042081B4 (en) * 2004-09-06 2013-12-19 Denso Corporation Anti-theft system for vehicles

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19529742A1 (en) * 1995-08-12 1997-02-13 Bayerische Motoren Werke Ag Motor vehicle with a satellite-based navigation device for position determination and with an anti-theft device
DE19621424A1 (en) * 1996-05-28 1997-12-04 Telemedia Gmbh Scanned data selection method for momentary vehicle position
DE19738323C1 (en) * 1997-09-02 1999-02-04 Siemens Ag Locating transponder based remote control unit used for car central locking system
DE19820921A1 (en) * 1998-05-09 1999-11-11 Bayerische Motoren Werke Ag Mobile transponder for automobile with optical display e.g. for providing vehicle direction indication.
DE19938951A1 (en) * 1999-08-17 2001-03-01 Deutsche Telekom Ag Mobile object locating device with GPS-receiver e.g. for finding position of vehicles, including automobiles and motorcycles, and items of luggage, has device for computing the direction and distance of user to current position of object

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19529742A1 (en) * 1995-08-12 1997-02-13 Bayerische Motoren Werke Ag Motor vehicle with a satellite-based navigation device for position determination and with an anti-theft device
DE19621424A1 (en) * 1996-05-28 1997-12-04 Telemedia Gmbh Scanned data selection method for momentary vehicle position
DE19738323C1 (en) * 1997-09-02 1999-02-04 Siemens Ag Locating transponder based remote control unit used for car central locking system
DE19820921A1 (en) * 1998-05-09 1999-11-11 Bayerische Motoren Werke Ag Mobile transponder for automobile with optical display e.g. for providing vehicle direction indication.
DE19938951A1 (en) * 1999-08-17 2001-03-01 Deutsche Telekom Ag Mobile object locating device with GPS-receiver e.g. for finding position of vehicles, including automobiles and motorcycles, and items of luggage, has device for computing the direction and distance of user to current position of object

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7358894B2 (en) 2004-05-04 2008-04-15 Volkswagen Aktiengesellschaft Key for a vehicle
DE102004061781B4 (en) * 2004-05-04 2017-11-23 Volkswagen Ag Key for a motor vehicle
DE102005042081B4 (en) * 2004-09-06 2013-12-19 Denso Corporation Anti-theft system for vehicles
WO2007137655A1 (en) 2006-05-25 2007-12-06 Daimler Ag Device for retrieving a parked vehicle
US7495580B2 (en) 2006-05-25 2009-02-24 Daimler Ag Arrangement for locating a parked vehicle
DE102008034230A1 (en) 2007-08-15 2009-02-26 Daimler Ag Method for determining a vehicle position
WO2009095472A2 (en) * 2008-01-31 2009-08-06 Continental Teves Ag & Co. Ohg Vehicle key
WO2009095472A3 (en) * 2008-01-31 2009-10-15 Continental Teves Ag & Co. Ohg Vehicle key, and method for locating a motor vehicle within a close range with the help of a vehicle key
US8643510B2 (en) 2008-01-31 2014-02-04 Continental Teves Ag & Co. Ohg Vehicle key
DE102008033744A1 (en) 2008-07-18 2009-03-12 Daimler Ag Vehicle i.e. bus, locating method for use during city walking tour, involves outputting warning signal depending on difference between time of arrival of vehicle and remaining time up to preset time

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