EP1515466B1 - Verkehrsnachrichtempfangsvorrichtung und -verfahren - Google Patents

Verkehrsnachrichtempfangsvorrichtung und -verfahren Download PDF

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Publication number
EP1515466B1
EP1515466B1 EP04254515.2A EP04254515A EP1515466B1 EP 1515466 B1 EP1515466 B1 EP 1515466B1 EP 04254515 A EP04254515 A EP 04254515A EP 1515466 B1 EP1515466 B1 EP 1515466B1
Authority
EP
European Patent Office
Prior art keywords
traffic information
vehicle
country
broadcasting station
region
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
Application number
EP04254515.2A
Other languages
English (en)
French (fr)
Other versions
EP1515466A3 (de
EP1515466A2 (de
Inventor
Kou Torisawa
Akihisa Kawazoe
Kenji Ogi
Hideki Endo
Taku Oikawa
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.)
Alpine Electronics Inc
Original Assignee
Alpine Electronics Inc
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 Alpine Electronics Inc filed Critical Alpine Electronics Inc
Publication of EP1515466A2 publication Critical patent/EP1515466A2/de
Publication of EP1515466A3 publication Critical patent/EP1515466A3/de
Application granted granted Critical
Publication of EP1515466B1 publication Critical patent/EP1515466B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/091—Traffic information broadcasting
    • G08G1/092—Coding or decoding of the information
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/091—Traffic information broadcasting
    • G08G1/093—Data selection, e.g. prioritizing information, managing message queues, selecting the information to be output
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/55—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for traffic information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
    • H04H60/49—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying locations
    • H04H60/53—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying locations of destinations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
    • H04H2201/13—Aspects of broadcast communication characterised by the type of broadcast system radio data system/radio broadcast data system [RDS/RBDS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/27—Arrangements for recording or accumulating broadcast information or broadcast-related information

Definitions

  • the present invention relates to a traffic information receiver for receiving traffic information which is broadcast according to the region and providing it to users.
  • RDS radio data system
  • data multiplexed with audio broadcasts is referred to as "RDS data”.
  • the configuration of the RDS data is shown in Figs. 5A and 5B .
  • the RDS data is formed, as shown in Fig. 5A , in units of groups, each group having 104 bits and consisting of four blocks. Each block has 26 bits consisting of 16-bit information words (m0 through m15) and 10-bit check words and offset words (c'0 through c'9).
  • the RDS data groups are classified according to the type of information, and group type 8A is used as a channel for broadcasting traffic information programs (traffic message channel (TMC)).
  • TMC traffic message channel
  • Fig. 5B illustrates the data configurations of group type 8A and group type 3A.
  • block A contains, as shown in Fig. 5B , a program identification (PI) code for identifying a broadcasting station represented by a country code, an area code, and a broadcasting station code.
  • Block B contains, not only a four-bit group type code, but also various codes for message management and extended systems, for example, a one-bit short message code (S) indicating that this message is a short message, a one-bit group message ID code (G) indicating whether this message is a single group message transmitted in one group data or a multi group message transmitted in multi group data, and a three-bit traffic congestion duration (duration-and-persistence-of-the disturbance) code (DP) indicating an approximate duration of traffic congestion.
  • the DP code has eight levels of the traffic congestion duration (0 to 4 hours).
  • Block C contains a two-bit diversion ID code (D) indicating the presence or absence of a diversion, a three-bit extent code indicating the location offset address, and an 11-bit event code indicating an event, for example, weather conditions, construction work, traffic congestion, or public transportation.
  • D diversion ID code
  • 3 three-bit extent code
  • 11-bit event code indicating an event, for example, weather conditions, construction work, traffic congestion, or public transportation.
  • Block D contains a 16-bit location code indicating the location at which the event indicated by the event code is occurring.
  • Group 3A specifies a location table in which the relationship between the location code used in group 8A and the position is defined by a location table number (LTN).
  • LTN location table number
  • block A contains the PI code.
  • block B not only a four-bit group ID code representing the group 3A, but also the group type using the RDS data of the group 3A, i.e., the group 8A, are indicated.
  • Block C contains the LTN.
  • block D CD48 indicating the application concerning the RDS data of the group 3A is fixed.
  • the LTN of the group 3A and the location code of the group 8A can specify the location at which the event indicated by the event code of the group 8A is occurring.
  • a broadcast receiver decodes the data of the group 8A while selecting a required location table from a plurality of prestored location tables according to the LTN designated by the group 3A.
  • the broadcast receiver can then obtain traffic information (traffic congestion, accidents, weather, etc.) and provides it to the user.
  • the location code is represented by a combination of code representing the Federal State (codes 1 to 16 assigned to the 16 Federal States), code representing the district, administrative section, and local district, highway code representing, for example, Autobahn or national routes, code representing the Autobahn exit, interchange, and service area, and code representing a road diverged from a highway.
  • code representing the Federal State codes 1 to 16 assigned to the 16 Federal States
  • code representing the district, administrative section, and local district code representing, for example, Autobahn or national routes
  • code representing the Autobahn exit, interchange, and service area code representing a road diverged from a highway.
  • Each area or point can be hierarchically specified by the location code.
  • a car navigation system determines the country in which a vehicle (driver) is currently located (which is sometimes referred to as a "current country") and provides traffic information transmitted only from a broadcasting station in that country to the user without providing traffic information from broadcasting stations in other countries.
  • a driver driving (or user) in a certain country does not have to receive unnecessary information from the other countries.
  • the user is not confused, and an unnecessary load is not imposed on the receiver.
  • the navigation system may disadvantageously provide a congestion distance shorter than the actual distance for the user since information only concerning the current country can be obtained.
  • EP-A-1 139 065 and EP-A-1 148 641 disclose on-vehicle traffic receivers which can switch a broadcasting station from which traffic information is received according to prediction means predicting movement of a vehicle.
  • an object of the present invention to provide an on-vehicle traffic information receiver for receiving traffic information which is broadcast according to the region and suitably providing traffic information to a user.
  • the present invention provides an on-vehicle traffic information receiver for receiving traffic information according to claim 1.
  • the latest traffic information concerning the current region can still be obtained while continuing receiving the traffic information concerning the region to which the vehicle is moving.
  • the present invention also provides a traffic information reception method for controlling the reception of traffic information according to claim 6.
  • traffic information can be suitably provided to the user regardless of whether the vehicle remains in the same region or is moving to another region.
  • FIG. 1 The configuration of an on-vehicle traffic information receiver for receiving RDS broadcasting according to an embodiment of the present invention is shown in Fig. 1 .
  • the traffic information receiver includes, as shown in Fig. 1 , an antenna 1 for receiving radio waves broadcast from broadcasting stations, a front end (F/E) 2 for receiving a specific reception frequency channel, an intermediate-frequency (IM)-amplification/frequency modulation (FM)-detection circuit (IF/DET) 3 for conducting IM amplification and FM detection on an output signal of the F/E 2, a noise-cancellation/stereo-demodulation circuit (NC/MPX) 4 for conducting noise cancellation and stereo demodulation on an output signal of the IF/DET 3 and outputting the resulting signal to a speaker 12, an RDS decoder 5, a channel tuning circuit 6, a controller 7, an operation unit 8, a memory 9, a display unit 10, and a navigation system 11.
  • IM intermediate-frequency
  • FM frequency modulation
  • NC/MPX noise-cancellation/stereo-demodulation circuit
  • the RDS decoder 5 extracts traffic information from the RDS data contained in the IF signal output from the IF/DET 3, decodes the extracted RDS data, and sends it to the controller 7.
  • the channel tuning circuit 6 inputs the frequency signal according to the broadcasting station designated by the controller 7 into the F/E 2 so as to switch the reception frequency channel in the F/E 2.
  • the navigation system 11 further includes the following items.
  • a map data storage unit 112 stores road map data.
  • a current position calculator 113 includes a speed sensor, a gyroscope, a global positioning system (GPS), etc. so as to calculate the current position of the vehicle by using the road map data.
  • a route searcher 114 searches for a suitable route from the current position to a destination specified by the user.
  • a driving guidance unit 115 generates a driving guidance image, for example, a mark indicating the current position, a route diagram illustrating a searched suitable route, or a mark indicating the destination on a map of the area around the current position.
  • a navigation controller 111 controls the entirety of the navigation system 11.
  • the controller 7 controls the storage of traffic information transmitted from the RDS decoder 5 in the memory 9, the display of traffic information received within a predetermined past time and stored In the memory 9 on the display unit 10, and the display of driving guidance images generated by the driving guidance unit 115 and received via the navigation controller 111 on the display unit 10.
  • the display of traffic information on the display unit 10 may be performed as follows.
  • the controller 7 sends traffic information received within a predetermined past time and stored in the memory 9 to the navigation system 11.
  • the driving guidance unit 115 of the navigation system 11 generates a driving guidance image from the traffic information received via the navigation controller 111 as information on the map.
  • the controller 7 then controls the display of the driving guidance image generated by the driving guidance unit 115 on the display unit 10.
  • the controller 7 performs the following traffic information reception processing indicated by the flowchart of Fig. 2 to control the reception of traffic information to be displayed on the display unit 10.
  • the controller 7 performs the processing shown in Fig. 2 while regularly querying the navigation controller 111 to receive information concerning a country in which the vehicle is currently located.
  • the navigation controller 111 determines a country containing the current position of the vehicle as the current country based on the map data and the current position calculated by the current position calculator 113, and responds to the controller 7.
  • the controller 7 controls the channel tuning circuit 6 to change the reception frequency to search for the broadcasting station broadcasting the RDS data containing the PI code indicating the current country. Then, the controller 7 starts receiving the RDS data from the searched broadcasting station. The controller 7 also starts storing the traffic information decoded from the RDS data in the memory 9.
  • the controller 7 queries the navigation controller 111 as to whether the vehicle is moving to another country within predetermined L minutes (for example, 10 minutes). The navigation controller 111 then predicts whether the vehicle is moving to another country within the predetermined L minutes based on the current position, the current route, the map data, and the current driving speed. If it is predicted that the vehicle is moving to another country, the navigation controller 111 sends an affirmative response to the controller 7.
  • predetermined L minutes for example, 10 minutes
  • the controller 7 determines in step 206 from this response whether it is predicted that the vehicle is moving to another country. If the outcome of step 206 is NO, the controller 7 continues receiving the RDS data containing the PI code indicating the current country from the corresponding broadcasting station.
  • step 206 the controller 7 checks in step 208 for traffic information decoded and stored in the memory 9 within a predetermined past time (for example, 20 minutes) from the RDS data containing the PI code of the predicted country. If such information is not stored, in step 210, the controller 7 searches for the broadcasting station broadcasting the RDS data containing the PI code indicating the predicted country, and starts receiving the RDS data of the searched broadcasting station. The controller 7 also starts storing the traffic information decoded from the received RDS data in the memory 9.
  • a predetermined past time for example, 20 minutes
  • the controller 212 determines in step 212 whether predetermined m minutes (for example, 25 minutes) have elapsed after starting receiving the RDS data containing the PI code indicating the predicted country from the broadcasting station. If the result of step 212 is NO, the controller determines in step 214 whether the vehicle has moved to the predicted country. If the vehicle has moved to the predicted country before the predetermined m minutes have elapsed, the controller 7 returns to step 204.
  • predetermined m minutes for example, 25 minutes
  • step 208 determines in step 208 from the RDS data containing the PI code of the predicted country that traffic information decoded within a predetermined past time (for example, 20 minutes) is stored in the memory 9, the process proceeds to step 216.
  • the controller 7 determines in step 216 whether n minutes (for example, 15 minutes) have elapsed after the PI code contained in the RDS data was last switched, i.e., after the country from which traffic information is received was last switched. If the outcome of step 216 is YES, the process proceeds to step 210. If the result of step 216 is NO, the controller 7 waits until n minutes have elapsed, and proceeds to step 210.
  • step 218 If it is determined in step 218 that the vehicle has moved to the predicted country before n minutes have elapsed, the controller 7 queries the navigation controller 111 in step 220 as to whether the vehicle is moving to another country within L minutes. If the controller 7 determines in step 222 that the vehicle is moving to another country within L minutes, the process returns to step 208. It is assumed that n minutes is a sufficient time for obtaining traffic information on a certain country from RDS data containing the PI code of that country.
  • the second reception of the traffic information concerning country A is set to be shorter to extend the time to obtain the traffic information on country B.
  • Steps 218, 220, 222, and 208 are provided for a case where the vehicle is moving in the order of country A, country B, country A, and country C, as shown in Fig. 3C .
  • priority is given to the reception of traffic information concerning country C, which is not yet stored in the memory 9, over the extension of the time for obtaining the traffic information concerning country B in the zone 311 after the vehicle has moved in the order of country A, country B, and country A.
  • the traffic-information alternate reception is started in step 224.
  • the predetermined m minutes is a sufficient time, in relation to the L minutes used for predicting that the vehicle is moving to another country, for determining that the vehicle is caught in traffic congestion since the vehicle has not moved to the predicted country even after the lapse of m minutes.
  • the traffic-information alternate reception is to alternately receive, every predetermined minutes (for example, 15 minutes) for each country, RDS data containing the PI code of the current country from the corresponding broadcasting station and RDS data containing the PI code of the country to which the vehicle is moving within predetermined minutes (for example, 20 minutes).
  • step 226 Upon starting the traffic-information alternate reception, the controller 7 determines in step 226 whether the vehicle has moved to the predicted country. If the outcome of step 226 is YES, the controller 7 switches in step 228 the reception broadcasting station to the broadcasting station from which the RDS data containing the PI code indicating the position of the current country is received. Thereafter, the process returns to step 204.
  • Fig. 4A It is now assumed, as shown in Fig. 4A , that it is predicted at a point 401 in country A that the vehicle is moving to country B and starts receiving the traffic information concerning country B, however, the vehicle has not reached country B because of traffic congestion.
  • the above-described alternate traffic-information reception processing is started to alternately receive traffic information concerning country A and traffic information concerning country B in a zone from a point 402 at which traffic congestion has been detected to country B. Accordingly, the traffic information on country B can be received before the vehicle moves to country B, and also, the reception of the latest traffic information concerning country A can be continued.
  • the reception of traffic information is switched according to the country based on the PI code contained in the RDS data. If, however, the countries are not associated with the areas covered by the location table, the reception of traffic information may be switched according to the area covered by the location table based on the location table number contained in the RDS data.
  • the navigation system 11 predicts whether the vehicle is moving to another country within the predetermined L minutes based on the route. However, the navigation system 11 may predict the movement of a vehicle even when a route is not set. More specifically, the navigation system 11 may predict the movement of a vehicle based on the road in which the vehicle is traveling by referring to the current position, the driving direction, and the map data.
  • the factor for predicting the movement of a vehicle to another country is the predetermined L minutes.
  • another factor may be used, for example, the navigation system 11 may predict the movement of a vehicle to another country within a predetermined driving distance.
  • the traffic information receiver is adapted to simultaneously receive broadcasting from a plurality of broadcasting stations, it is preferable that traffic information concerning a current country and traffic information concerning a country to which the vehicle is moving be simultaneously received. In this case, regardless of whether the vehicle is moving to another country, traffic information concerning the current country and traffic information concerning an adjacent country may be simultaneously received.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Circuits Of Receivers In General (AREA)
  • Navigation (AREA)
  • Traffic Control Systems (AREA)

Claims (6)

  1. Fahrzeuggebundener Verkehrsnachrichtenempfänger zum Empfangen von Verkehrsnachrichten, die von einer Rundfunkstation gesendet werden, umfassend:
    Berechnungsmittel (113) für die Ist-Position zum Berechnen einer aktuellen Position des Fahrzeugs;
    Verkehrsnachrichtenempfangsmittel (6) zum Empfangen von Verkehrsnachrichten, die eine erste Region betreffen, welche die aktuelle Position ab einer ersten Rundfunkstation enthalten;
    Vorhersagemittel (11) zum Vorhersagen einer Bewegung des Fahrzeugs aus der genannten ersten Region in Richtung einer zweiten Region; und
    Steuermittel (7) für Verkehrsnachrichten vor dem Empfang zum Umschalten des genannten Verkehrsnachrichtenempfangsmittels (6) von der genannten ersten Rundfunkstation auf eine zweite Rundfunkstation, die Verkehrsnachrichten bezüglich der genannten zweiten Region sendet, wenn das Vorhersagemittel (11) die genannte Bewegung des Fahrzeugs vorhersagt;
    dadurch gekennzeichnet, dass;
    wenn das Fahrzeug die genannte zweite Region nach einem vorbestimmten Zeitablauf nicht erreicht hat, nach dem das Vorhersagemittel (11) die genannte Bewegung des Fahrzeugs vorhergesagt hat, das Steuermittel (7) für Verkehrsnachrichten vor dem Empfang, angepasst wird, das genannte Verkehrsnachrichtenempfangsmittel (6) zwischen einer Vielzahl von Rundfunkstationen abwechselnd zu schalten, wobei die genannte Vielzahl von Rundfunkstationen wenigstens die genannte zweite Rundfunkstation und die genannte erste Rundfunkstation einschließt.
  2. Fahrzeuggebundener Verkehrsnachrichtenempfänger nach Anspruch 1, wobei das Vorhersagemittel (11) ein Navigationssystem (11) ist.
  3. Fahrzeuggebundener Verkehrsnachrichtenempfänger nach Anspruch 1, wobei das Navigationssystem (11) die Bewegung des Fahrzeugs auf einer Route beruhend vorhersagt.
  4. Fahrzeuggebundener Verkehrsnachrichtenempfänger nach irgendeinem der Ansprüche 1 bis 3, wobei jede der genannten Regionen ein Land ist.
  5. Fahrzeuggebundener Verkehrsnachrichtenempfänger nach irgendeinem der Ansprüche 1 bis 4, wobei die Verkehrsinformation gemäß der Funkdatensystemnorm gesendet wird.
  6. Verkehrsnachrichtenempfangsverfahren zur Steuerung des Empfangs von Verkehrsnachrichten in einem fahrzeuggebundenen Verkehrsnachrichtenempfänger, die ab einer Rundfunkstation gesendet werden, umfassend:
    einen ersten Schritt zur Berechnung einer Ist-Position des Fahrzeugs;
    einen zweiten Schritt zum Empfangen von Verkehrsnachrichten ab einer ersten Rundfunkstation, die eine erste Region betreffen, welche die Ist-Position ab einer ersten Rundfunkstation enthalten;
    einen dritten Schritt der Vorhersage der Bewegung des Fahrzeugs aus der genannten ersten Region in Richtung einer zweiten Region;
    einen vierten Schritt der Umschaltung des Empfangs der Verkehrsnachrichten ab der genannten ersten Rundfunkstation auf eine zweite Rundfunkstation, die Verkehrsnachrichten bezüglich der genannten zweiten Region sendet, wenn die genannte Bewegung des Fahrzeugs vorhergesagt wird; und
    gekennzeichnet durch den Schritt der abwechselnden Umschaltung des Empfangs von Verkehrsnachrichten zwischen einer Vielzahl von Rundfunkstationen, wobei die genannte Vielzahl von Rundfunkstationen wenigstens die genannte zweite Rundfunkstation und die genannte erste Rundfunkstation einschließt, wenn das Fahrzeug nach einem vorbestimmten Zeitablauf, nach dem die Bewegung des Fahrzeugs vorhergesagt ist, die genannte zweite Region nicht erreicht hat.
EP04254515.2A 2003-09-10 2004-07-28 Verkehrsnachrichtempfangsvorrichtung und -verfahren Expired - Lifetime EP1515466B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003317763A JP4154301B2 (ja) 2003-09-10 2003-09-10 交通情報受信装置及び交通情報取得方法
JP2003317763 2003-09-10

Publications (3)

Publication Number Publication Date
EP1515466A2 EP1515466A2 (de) 2005-03-16
EP1515466A3 EP1515466A3 (de) 2009-05-06
EP1515466B1 true EP1515466B1 (de) 2015-12-30

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JP (1) JP4154301B2 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006057274A1 (de) * 2006-12-05 2008-06-12 Robert Bosch Gmbh Verfahren zum Betreiben eines Navigationsgeräts und entsprechend ausgebildetes Navigationsgerät
KR100852421B1 (ko) 2007-01-11 2008-08-14 한국단자공업 주식회사 아날로그 방송 채널의 자동 전환 장치 및 방법
KR100852422B1 (ko) 2007-01-11 2008-08-14 한국단자공업 주식회사 디지털 방송 채널의 자동 전환 장치 및 방법
WO2009143874A1 (en) * 2008-05-29 2009-12-03 Tomtom International B.V. Portable navigation device, portable electronic communications apparatus, and method of generating radio data system information therefor
ES2537165T3 (es) * 2011-06-30 2015-06-03 Technisat Digital Gmbh Procedimiento para la recepción de datos de tráfico mediante un dispositivo de navegación
EP3046278B1 (de) * 2015-01-19 2021-08-11 Harman Becker Automotive Systems GmbH Verfahren zum Einstellen unterschiedlicher Tuner-und HMI-Einstellungen, abhängig von der Position des Tuners
CN114217614A (zh) * 2021-12-09 2022-03-22 广州小鹏自动驾驶科技有限公司 一种车辆脱困方法、装置和远程驾驶系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4442413A1 (de) * 1994-11-29 1996-05-30 Bosch Gmbh Robert Verfahren zur Einstellung eines mobilen Rundfunkempfängers und Rundfunkempfänger
DE10015765A1 (de) 2000-03-30 2001-10-04 Mannesmann Vdo Ag Verfahren zur Auswahl eines Rundfunksenders für dynamische Fahrzeugnavigation
DE10019681A1 (de) 2000-04-20 2001-10-25 Grundig Ag Vorrichtung und Verfahren zur automatischen Auswahl von Sendern

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Publication number Publication date
EP1515466A3 (de) 2009-05-06
EP1515466A2 (de) 2005-03-16
JP4154301B2 (ja) 2008-09-24
JP2005086605A (ja) 2005-03-31

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