EP0901246B1 - Méthode et récepteur pour la réception de signaux numériques codés, comme par exemple des informations routières, utilisant le système RDS - Google Patents

Méthode et récepteur pour la réception de signaux numériques codés, comme par exemple des informations routières, utilisant le système RDS Download PDF

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Publication number
EP0901246B1
EP0901246B1 EP98114628A EP98114628A EP0901246B1 EP 0901246 B1 EP0901246 B1 EP 0901246B1 EP 98114628 A EP98114628 A EP 98114628A EP 98114628 A EP98114628 A EP 98114628A EP 0901246 B1 EP0901246 B1 EP 0901246B1
Authority
EP
European Patent Office
Prior art keywords
location table
receiver
messages
portions
message
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
EP98114628A
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German (de)
English (en)
Other versions
EP0901246A2 (fr
EP0901246A3 (fr
Inventor
Bernd Hessing
Frank Blischke
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
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0901246A2 publication Critical patent/EP0901246A2/fr
Publication of EP0901246A3 publication Critical patent/EP0901246A3/fr
Application granted granted Critical
Publication of EP0901246B1 publication Critical patent/EP0901246B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H04H60/76—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet
    • H04H60/81—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself
    • H04H60/90—Wireless transmission systems
    • H04H60/91—Mobile communication networks
    • 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
    • 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
    • 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]

Definitions

  • the invention relates to a method and a receiver for receiving digitally encoded messages that are broadcast by at least one transmitter and are decoded in a receiver using a location table.
  • Digitally coded traffic reports - also referred to below as TMC messages - can be transmitted using the Radio Data System (RDS), which enables additional and inaudible transmission of digital data parallel to broadcast programs in a data channel.
  • RDS Radio Data System
  • Specifications of the radio data system for VHF radio are inter alia in the publication Tech. 3244 - E, March 1984 of the European Broadcasting Union (EBU).
  • Radio receivers with suitable RDS decoders can record and decode transmitted data in addition to audio reception with the same receiver.
  • a location table is required in the receiver, on the basis of which information transmitted with the TMC message, the location affected, the extent or the direction of an event in the receiver, can be decoded. For this purpose, a considerable amount of data is required for an area for which TMC messages should be decodable, for example a state the size of Germany. Also, come through
  • the tables are stored in known receivers not in read-only memory (ROMs), but in removable storage, such as memory cards, smart cards, CD-ROMs, hard drives, read-only memory. Decoding a single message requires only a very small portion of the table. To reduce memory requirements, the parts of a complete table stored in the receiver could be split, e.g. B. in different states. However, longer runs would have to be prepared by using such small memory by appropriately handling the removable memories.
  • EP-A-0 725 505 discloses a receiver for broadcast coded traffic messages which are decoded by means of a location table stored in the receiver.
  • the location table is stored on an exchangeable data carrier, in particular a chip card.
  • Suitable service providers can make the rewriting of the smart card.
  • a service computer is provided which has an operating unit by means of which from the set of available in a central location location lists desired location lists can be selected.
  • the selected data is written to the memory of the smart card.
  • the thus modified chip card can then be used in a traffic message receiver for decoding coded received traffic reports.
  • the object of the present invention is to propose a method and a receiver which, with a low storage capacity, enable the decoding of digitally coded messages, whereby no special operating procedures are required by the user.
  • this object is achieved in that it is checked whether the required for the decoding part of the location table is stored in the receiver, that, if appropriate, the decoding takes place and that if not on request of the recipient via a telecommunications network from a service computer of required part of the location table is sent, received by the receiver, stored and used to decode the message.
  • the inventive method has the advantage that no complete storage of the respective location table in the receiver is required. Thus, memories with smaller capacity, lower power consumption, and less maintenance can be used. In addition, any change and expansion of the road network can be taken into account centrally in the service computer, so that the latest version of the location table is always available for decoding in the receiver.
  • the transmission of an identifier (number) is provided with which of several place tables the message is to be decoded. This is exploited in the inventive method such that the part of the location table is also requested when a corresponding part of the location table is present in the receiver, but this has a different identifier than the received. Since the identifier also reflects the update status, obsolete parts of the location table are overwritten with new ones.
  • An advantageous embodiment of the method according to the invention is that, when the capacity limit of a memory provided for the parts of the location table is reached, previously stored parts of the location table are overwritten according to predetermined criteria. This ensures that the existing parts of the location table are largely adapted to the expected TMC messages.
  • this embodiment can be developed such that those parts of a location table are overwritten first, not by one made in the receiver Area selection of the messages are recorded.
  • an area selection made in the receiver is transmitted with the request to the service computer. It is preferably provided that, in addition to the parts required for the respective message to be decoded, parts of the location table, which are detected by the area selection, are sent to the receiver in response to a request with an area selection.
  • This embodiment can be developed further in that the service computer, in response to a request with an area selection for messages concerning locations outside the selected area, does not transmit any part of the location table to the receiver. This avoids that parts of the location table, which are currently of no interest to the user of the receiver, are stored in the memory and thus potentially more interesting parts for the user are overwritten.
  • various telecommunication networks are suitable for the method according to the invention.
  • mobile receivers especially recipients in motor vehicles
  • the use of a mobile network is advantageous.
  • stationary receivers for example, the ISDN or packet-switched services come into question.
  • a non-volatile rewritable memory is provided which has a capacity sufficient for the storage of at least some parts of the location table that in the memory those parts of the location table are writable to decode each received message are required, and that a transmitting / receiving device is provided for a telecommunications network with which requests can be sent and parts of the location table can be received.
  • the transmitting / receiving device is a terminal of a mobile network.
  • the location table not only contains the information required for the decoding, but also those required for a user-friendly reproduction, for example the names of the locations.
  • the receiver according to the invention it is provided that for an output of the messages required information of the location table are stored in a read-only memory.
  • the non-volatile rewritable memory need not be provided with a capacity which is sufficient even for the non-variable information, such as the place names.
  • the receiver according to the invention can be delivered to the user without location table in the memory.
  • the parts of the location table required for the respective application area are stored in the memory. If the reception behavior of the receiver changes, for example because other stations are regularly received by the RDS tuner (example: moving, selling the vehicle, vacation trip), then the receiver automatically reconfigures itself to the new conditions. The selection, the purchase and a manual exchange of the place table in the receiver are eliminated.
  • the receiver contains programs for communication recording with the service computer of an information service provider.
  • the data packets used for request and response during data transmission by mobile phone can be embedded in the "General Message" format described in prENV / 278/4/3/0015.
  • the received data are written into the memory and stored there non-volatile. A received message can thus be decoded.
  • Requests may be made to provide not only the location codes necessary to decode a single message but location codes compiled according to other criteria in the response. For example, a single request may request all of the location codes contained within a particular area, road, or stock of a TMC sender. Such requests can shorten the time it takes to decode all messages from a sender.
  • the receiver shown in Fig. 1 in a conventional manner an antenna 1, a receiving part 2, a stereo decoder 4, a low-frequency amplifier 5 and power amplifier 6, 7 and speakers 8, 9 on.
  • the output from the receiving part 2 stereo multiplex signal is supplied in addition to the stereo decoder 4 a RDS decoder 3, whose output is connected to a microcomputer 13.
  • the microcomputer 13 is used in addition to the control of the receiver for decoding, management, editing for the playback and selection of the TMC messages.
  • a keyboard 14 and a display device (display) 15 is connected to the microcomputer 13, .
  • the output of the selected TMC messages can be done either via the display 15 or as a voice output, to which the microcomputer 13 is connected via a speech synthesizer 16 to an input 10 of the low-frequency amplifier 5.
  • the microcomputer 13 is also connected to a non-volatile rewritable memory 17 which receives the location table or parts thereof.
  • A likewise connected to the microcomputer 13 terminal 18 of a mobile network with an antenna 19 is used for communication with a service computer, not shown.
  • a terminal 18 a conventional mobile phone, for example, according to the GSM standard, can be used, which has a suitable for data exchange with the microcomputer 13 interface.
  • FIG. 2 shows as a flow chart an embodiment of the method according to the invention which is implemented as a program in the microcomputer 13. It runs alongside a number of other programs for the functions of the microcomputer illustrated in connection with FIG.
  • a TMC message arrives at 22 and includes, for example, location code (loc) 12273, extent (ext) 2, and direction (dir) +.
  • DEC decoder
  • DEC also included in the form of a program in microprocessor 13
  • an attempt is made to read out the decoding information from the stored internal location table (LOCTAB) using the data loc: 12273, ext: 2, dir: +.
  • LOCTAB stored internal location table
  • the TMC message is decoded at 26 and output at 27.
  • the program ends.
  • the program is started every time a TMC message is received.
  • the program can run several times, almost simultaneously, so that in the waiting time between 29 and 33 other messages can be decoded.
  • a request (REQ) is made to the service computer of a service provider at 29.
  • An essential part of this requirement is the TMC message obtained at 22, in particular the location, the extent and the direction.
  • other information may also be included in the request, for example the respectively selected area selection.
  • the request shown schematically at 31 is received, processed and answered at 32 at the service provider. Furthermore, the response is transmitted to the requesting recipient as a text message.
  • the content of the response (ANS) is shown schematically.
  • xxx means "Aalen / Westhausen", yyy "Heidenheim” and zzz "Ulm / Würzburg". This answer is received at 34 by the receiver, after which he has been waiting in the program part 35 for the answer.
  • the answer is entered into an already existing location table. This incorporation can be done by additional storage if there is no information in the stored location table for the locations concerned, or by replacing if a more recent version of the relevant part of the location table is received.
  • the decoding of the TMC message may be performed at 26.
  • the text to be output is: "A7 from Ulm direction Würzburg between junction 116 Heidenheim and junction 114 Aalen / Westhausen ". This is followed by an event, for example "traffic jam", for the decoding of which the location table is not needed.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Circuits Of Receivers In General (AREA)

Claims (14)

  1. Procédé pour la réception de messages numériques codés, émis par au moins un émetteur et décodés dans un récepteur en utilisant une table de lieux,
    caractérisé en ce qu'
    on vérifie si la partie de la table de lieux nécessaire pour le décodage est mémorisée dans le récepteur, et dans l'affirmative on effectue le décodage, mais dans la négative, la partie nécessaire de la table de lieux est envoyée à la demande du récepteur, par un ordinateur serveur via un réseau de télécommunication, reçue par le récepteur, mémorisée et utilisée pour le décodage du message.
  2. Procédé selon la revendication 1, dans lequel on reçoit avec le message une caractéristique indiquant avec quelle table de lieux le message doit être décodé,
    caractérisé en ce qu'
    on demande encore la partie de la table de lieux lorsqu'une partie correspondante de la table de lieux est présente dans le récepteur mais qu'elle comporte une autre caractéristique que la caractéristique reçue.
  3. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    lorsque l'on atteint la limite de capacité d'une mémoire prévue pour les parties de la table de lieux, on écrase des parties de la table de lieux mémorisées antérieurement, selon des critères prédéterminés.
  4. Procédé selon la revendication 3,
    caractérisé en ce qu'
    on écrase chaque fois les parties de la table de lieux mémorisées le plus tôt.
  5. Procédé selon la revendication 3,
    caractérisé en ce qu'
    un critère prédéterminé est la situation géographique des parties de la table de lieux à écraser.
  6. Procédé selon la revendication 5,
    caractérisé en ce qu'
    on écrase d'abord les parties de la table de lieux, qui ne sont pas comprises dans une sélection régionale des messages effectuée dans le récepteur.
  7. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce qu'
    on transmet ensemble à l'ordinateur serveur plusieurs demandes qui concernent des messages non décodables.
  8. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce qu'
    on transmet avec la demande à l'ordinateur serveur une sélection régionale effectuée dans le récepteur.
  9. Procédé selon la revendication 8,
    caractérisé en ce que
    suite à une demande avec une sélection régionale, l'ordinateur serveur envoie au récepteur des parties de la table de lieux qui sont comprises dans la sélection régionale, en plus des parties nécessaires pour le décodage de chaque message.
  10. Procédé selon l'une quelconque des revendications 8 ou 9,
    caractérisé en ce que
    suite à une demande avec une sélection régionale, l'ordinateur serveur ne transmet au récepteur aucune partie de la table de lieux pour des messages qui concernent des lieux situés à l'extérieur de la région sélectionnée.
  11. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le réseau de télécommunication est un réseau de téléphonie mobile.
  12. Récepteur pour la réception de messages numériques codés, émis par au moins un émetteur et décodés dans le récepteur en utilisant une table de lieux,
    caractérisé en ce qu'
    une mémoire non volatile réinscriptible (17) présente une capacité suffisante pour le stockage d'au moins quelques parties de la table de lieux, on peut réécrire dans la mémoire les parties de la table de lieux nécessaires pour le décodage du message respectif reçu, et un dispositif émetteur/récepteur (18, 19) pour un réseau de télécommunication, permet d'envoyer des demandes et de recevoir des parties de la table de lieux.
  13. Récepteur selon la revendication 12,
    caractérisé en ce que
    le dispositif émetteur/récepteur (18, 19) est un appareil terminal d'un réseau de téléphonie mobile.
  14. Récepteur selon l'une quelconque des revendications 12 ou 13,
    caractérisé en ce que
    des informations de la table de lieux nécessaires pour l'émission des messages sont stockées dans une mémoire morte.
EP98114628A 1997-09-08 1998-08-04 Méthode et récepteur pour la réception de signaux numériques codés, comme par exemple des informations routières, utilisant le système RDS Expired - Lifetime EP0901246B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19739257 1997-09-08
DE1997139257 DE19739257A1 (de) 1997-09-08 1997-09-08 Verfahren und Empfänger zum Empfang von digital codierten Meldungen

Publications (3)

Publication Number Publication Date
EP0901246A2 EP0901246A2 (fr) 1999-03-10
EP0901246A3 EP0901246A3 (fr) 2001-12-05
EP0901246B1 true EP0901246B1 (fr) 2007-05-23

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EP98114628A Expired - Lifetime EP0901246B1 (fr) 1997-09-08 1998-08-04 Méthode et récepteur pour la réception de signaux numériques codés, comme par exemple des informations routières, utilisant le système RDS

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EP (1) EP0901246B1 (fr)
DE (2) DE19739257A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19801011A1 (de) * 1998-01-14 1999-07-15 Bosch Gmbh Robert Einrichtung mit begrenztem Arbeitsspeicher zum Empfang und Ortstabelle zur Decodierung von digital codierten Meldungen
DE19801012A1 (de) * 1998-01-14 1999-07-15 Bosch Gmbh Robert Einrichtung zum Empfang und Ortstabelle zur Decodierung von digital codierten Meldungen
DE19937372A1 (de) * 1999-08-12 2001-02-15 Bosch Gmbh Robert Verfahren zur Anforderung und zur Verarbeitung von Verkehrsmeldungen
DE10015765A1 (de) * 2000-03-30 2001-10-04 Mannesmann Vdo Ag Verfahren zur Auswahl eines Rundfunksenders für dynamische Fahrzeugnavigation
GB2364209A (en) * 2000-06-30 2002-01-16 Nokia Oy Ab Combined digital video broadcast receiver and cellular receiver
US7548518B2 (en) 2001-06-29 2009-06-16 Nokia Corporation Receiver
DE102004025191A1 (de) * 2004-05-18 2005-12-22 Deutsche Telekom Ag Verfahren zur individuellen Steuerung von Endgeräten durch ein Broadcast-Signal
DE102012223780A1 (de) * 2012-12-19 2014-06-26 Bayerische Motoren Werke Aktiengesellschaft Verfahren und System zum Erzeugen von Verkehrsinformationen für mindestens ein Fahrzeug
WO2016190843A1 (fr) * 2015-05-22 2016-12-01 Here Global B.V. Sauvegarde de télécommunication pour un service de données radio (rds)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2249447B (en) * 1990-10-30 1995-05-24 Technophone Ltd Combined broadcast radio receiver and radio telephone
DE19503420A1 (de) * 1995-02-03 1996-08-08 Bosch Gmbh Robert Rundfunkempfänger zum Empfang und zur Wiedergabe von digital codierten Verkehrsmeldungen
JP3709629B2 (ja) * 1996-01-31 2005-10-26 株式会社デンソー 情報サービス装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP0901246A2 (fr) 1999-03-10
EP0901246A3 (fr) 2001-12-05
DE59814011D1 (de) 2007-07-05
DE19739257A1 (de) 1999-03-11

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