EP0930737A2 - Dispositif avec moyens de stockage limités pour la réception de messages codés numériques et liste de localités pour le décodage de messages codés numériques - Google Patents

Dispositif avec moyens de stockage limités pour la réception de messages codés numériques et liste de localités pour le décodage de messages codés numériques Download PDF

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Publication number
EP0930737A2
EP0930737A2 EP98123272A EP98123272A EP0930737A2 EP 0930737 A2 EP0930737 A2 EP 0930737A2 EP 98123272 A EP98123272 A EP 98123272A EP 98123272 A EP98123272 A EP 98123272A EP 0930737 A2 EP0930737 A2 EP 0930737A2
Authority
EP
European Patent Office
Prior art keywords
location table
segments
decoding
segment
sub
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.)
Ceased
Application number
EP98123272A
Other languages
German (de)
English (en)
Other versions
EP0930737A3 (fr
Inventor
Stefan Goss
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 EP0930737A2 publication Critical patent/EP0930737A2/fr
Publication of EP0930737A3 publication Critical patent/EP0930737A3/fr
Ceased 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
    • 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
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/86—Arrangements characterised by the broadcast information itself
    • H04H20/93—Arrangements characterised by the broadcast information itself which locates resources of other pieces of information, e.g. URL [Uniform Resource Locator]
    • 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
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
    • H04H2201/20—Aspects of broadcast communication characterised by the type of broadcast system digital audio broadcasting [DAB]
    • 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
    • H04H60/51—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 receiving stations
    • 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

Definitions

  • the invention relates to a device for receiving digitally coded messages, in particular traffic reports, a location table is required for decoding, and an area location table for decoding of digitally coded messages, in particular Traffic announcements, in a receiver.
  • Radio data system an additional and inaudible transmission of digital data parallel to Broadcast programs in a data channel.
  • Specifications of the radio data system for FM radio are among others in the publication Tech. 3244-E, March 1984 of the European Runfunk Union (EBU).
  • Radio receivers with suitable RDS decoders can transmitted data in addition to audio reception with the Record and decode the same receiver.
  • For the Data transmission is 32 groups of 104 bits each provided, each of the transmitted groups one each certain service is assigned.
  • Group 8a is for Time for the transmission of digitally coded Traffic announcements provided.
  • the structure and coding of these traffic reports are specified in CEN ENV 12313-1, which is based on the proposed standard ALERT C, November 1990, published by RDS ATT ALERT Consortium based.
  • the essential elements of a Traffic reports are the location of the event and the event. This information is cataloged that means that every traffic-relevant place and everyone assigned a unique code to traffic-relevant events is.
  • the chaining of the locations along the location table existing roads reflect the course. Except the usual facilities of a receiving device with a RDS decoders are used to use the traffic information channel TMC (Traffic Message Channel) Decoding devices for Storage, further processing and output of the Traffic announcements required.
  • TMC Traffic Message Channel
  • DAB digital audio broadcasting
  • FI Flust Information Channel
  • SMS Short Message Service
  • a traffic report location-related data is required, such as type a street, possibly a specific name of the Street, the name of the place, a second name of the place and if applicable, the geographic coordinates.
  • a digitally coded traffic report can only be decoded if the location code and the associated Information in the list is available in the recipient. There are therefore very large amounts of data are required if all Traffic reports should be decodable and reproducible. This applies all the more, the greater that of a uniform standardized system is covered area, for example the Federal Republic of Germany.
  • the interchangeability enables, among other things an adaptation to changes in the road network and the Decoding of TMC messages in other areas, that is usually in other countries.
  • the access time on the data relatively large, which translates into a delay that makes the message playback noticeable.
  • Another It is possible to save location tables by that the location table filed in a central facility is and that a data transmission device for Transfer of the location table from the central facility is provided. In the central facility, the latest location tables are available.
  • a data transmission device is suitable, for example Cellular device.
  • the object of the invention is the decoding of digital encoded messages despite the use of location tables on exchangeable data carriers or in central Facilities to accelerate without the capacity of the RAM for recording the entire location table must be designed.
  • At least one segment of each Location table can be loaded into a working memory, the Segments that contain locations of each sub-area.
  • the device according to the invention ensures that the memory volume of the memory in the receiver is not is exceeded, which is reserved for a download. This is even more advantageous than the life cycle of the replaceable disk significantly shorter than that functional lifetime of the receiver is. That's the way it is Up-date phase of a CD-ROM, for example, at half Year while the device for a life of eight years is designed. Since the media, that is, the removable media (CD-ROM) often from others Companies are manufactured and sold as the devices, with the device according to the invention emerging standardization problems avoided. At in a central facility stored location tables Expect even more frequent changes, since that's the one Advantage of the central facility in an ongoing Update exists.
  • the segments also for decoding required locations in adjacent sub-areas included, while another embodiment provides that at least two segments at a time in the RAM are loadable.
  • the device according to the invention provided that the reloading a segment is initiated by an operation.
  • a vehicle with a suitable tracking device provided that reloading of a segment depending on the respective position of a vehicle takes place automatically.
  • the size of the segments depending on Preconditions can be chosen in detail.
  • the RAM has at least a standardized size.
  • An advantageous embodiment does not make this possible too much RAM with enough Size of the sub-areas in that the standardized size 128 is kbytes.
  • the object of the invention is also at a Location table solved in that the location table in several each individually loadable into a memory of the receiver Segments is divided, the segments being the locations respectively of a sub-area included.
  • Facility mentioned can also be in the individual segments Locations required for coding in adjacent areas Sub-areas exist or at least two segments loaded into RAM at the same time. By this is the decoding of TMC messages that Contain location information from both affected sub-areas, possible. These further developments enable in particular a transition from adjacent areas, so usually in the north-south or east-west direction. However for decoding a TMC message not only places that are in these directions outside of what is being viewed Partial area, but also in the diagonal direction, would require an additional segment in the Load memory. To avoid such Measures is in a further development of the location table provided that additional segments of the location table are stored that contain locations in other sub-areas, that are spatially offset from the sub-areas.
  • Location table is that the segment boundary by two pairs of coordinates each, preferably in WGS84 format, and a segment identifier is characterized.
  • the above compatibility can be with a location table thereby ensuring that the segments at most have a standardized size. It is preferably the standardized size 128 kByte.
  • the location table according to the invention can on a exchangeable data storage or in a central Facility to be filed with a facility for Decoding of the messages via a transmission device is connectable.
  • Fig. 1 shows schematically the division of a location database an area 10 in segments 1 to 9, in each of which Places are listed in sub-areas.
  • a TMC message can can only be decoded if all are contained in it Location codes in the respective loaded in the working memory Segments are included. This applies, for example, to a message containing the location code of a location 11 or location codes of two locations 12, 13 - even if in RAM only loaded segment 2 of the location table is.
  • two locations 14, 15 are used for decoding different segments, so it is the case in Fig. 1 illustrated embodiment also a prerequisite that both segments are stored in the main memory.
  • the overlap Segments 1 'to 9' with the overlap only schematically in the form of strips representative of it it is shown that for decoding messages, that affect a sub-area, required locations of the adjacent subareas into the respective segment 1 'to 9' the place table are included.
  • 3 contains the removable media except segments 1 to 9 redundant segments 16 to 19, which are related to segments 1 to 9 in both north-south and east-west direction overlap. This allows you to travel in any direction always load the location table for a sub-area that is approximately in the direction of travel and for which at Driver of the vehicle interested in coding the Traffic announcements exist.
  • Fig. 4 shows a block diagram of an inventive Setup using the example of a recipient in which a Antenna 21 received signals in a receiving part 22 in be selected, amplified and demodulated in the usual way.
  • the resulting multiplex signal MPX is not except illustrated further circuits for reproducing the Audio signals fed to an RDS decoder 23 which is connected on the output side to a microcomputer 24.
  • the Microcomputer 24 is used to control the device and Decoding of those contained in the RDS signals TMC messages.
  • a read / write memory 25 serves as RAM for the microcomputer.
  • the Microcomputer with a keyboard 26 and a display 27 connected.
  • the invention Also set up in other end devices, for example for Cellular networks are installed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Circuits Of Receivers In General (AREA)
  • Mobile Radio Communication Systems (AREA)
EP98123272A 1998-01-14 1998-12-07 Dispositif avec moyens de stockage limités pour la réception de messages codés numériques et liste de localités pour le décodage de messages codés numériques Ceased EP0930737A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998101011 DE19801011A1 (de) 1998-01-14 1998-01-14 Einrichtung mit begrenztem Arbeitsspeicher zum Empfang und Ortstabelle zur Decodierung von digital codierten Meldungen
DE19801011 1998-01-14

Publications (2)

Publication Number Publication Date
EP0930737A2 true EP0930737A2 (fr) 1999-07-21
EP0930737A3 EP0930737A3 (fr) 2004-11-17

Family

ID=7854501

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98123272A Ceased EP0930737A3 (fr) 1998-01-14 1998-12-07 Dispositif avec moyens de stockage limités pour la réception de messages codés numériques et liste de localités pour le décodage de messages codés numériques

Country Status (2)

Country Link
EP (1) EP0930737A3 (fr)
DE (1) DE19801011A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0725505A1 (fr) * 1995-02-03 1996-08-07 Robert Bosch Gmbh Récepteur de radiodiffusion pour la réception la gestion et l'affichage d'informations routières codées numériques
EP0777210A2 (fr) * 1995-11-30 1997-06-04 Oki Electric Industry Company, Limited Système de lecture d'un texte à haute voix
WO1997041654A1 (fr) * 1996-04-29 1997-11-06 Telefonaktiebolaget Lm Ericsson Systeme de diffusion d'information de telecommunications
EP0901246A2 (fr) * 1997-09-08 1999-03-10 Robert Bosch Gmbh Méthode et récepteur pour la réception de signaux numériques codés, comme par exemple des informations routières, utilisant le système RDS

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0725505A1 (fr) * 1995-02-03 1996-08-07 Robert Bosch Gmbh Récepteur de radiodiffusion pour la réception la gestion et l'affichage d'informations routières codées numériques
EP0777210A2 (fr) * 1995-11-30 1997-06-04 Oki Electric Industry Company, Limited Système de lecture d'un texte à haute voix
WO1997041654A1 (fr) * 1996-04-29 1997-11-06 Telefonaktiebolaget Lm Ericsson Systeme de diffusion d'information de telecommunications
EP0901246A2 (fr) * 1997-09-08 1999-03-10 Robert Bosch Gmbh Méthode et récepteur pour la réception de signaux numériques codés, comme par exemple des informations routières, utilisant le système RDS

Also Published As

Publication number Publication date
EP0930737A3 (fr) 2004-11-17
DE19801011A1 (de) 1999-07-15

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