EP1619642A2 - Procédé pour transmettre des messages numériquement codés en groupes de données et recepteur - Google Patents

Procédé pour transmettre des messages numériquement codés en groupes de données et recepteur Download PDF

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Publication number
EP1619642A2
EP1619642A2 EP05104722A EP05104722A EP1619642A2 EP 1619642 A2 EP1619642 A2 EP 1619642A2 EP 05104722 A EP05104722 A EP 05104722A EP 05104722 A EP05104722 A EP 05104722A EP 1619642 A2 EP1619642 A2 EP 1619642A2
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EP
European Patent Office
Prior art keywords
identifier
additional
information
messages
bits
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
EP05104722A
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German (de)
English (en)
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EP1619642A3 (fr
Inventor
Ralf Duckeck
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 EP1619642A2 publication Critical patent/EP1619642A2/fr
Publication of EP1619642A3 publication Critical patent/EP1619642A3/fr
Ceased legal-status Critical Current

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    • 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

Definitions

  • the invention is based on a method for transmitting digitally coded messages in data groups and a receiver for receiving and evaluating these messages according to the preamble of the independent claims.
  • ISO 14819-1 In addition to a single data group comprising traffic reports, ISO 14819-1 also describes traffic reports which comprise several data groups, so-called multi group messages. Their structure and content is described in detail in Chapter 5. Accordingly, it is provided that basic information, such as in particular location and type of a traffic-related event in the first group of such a multi-group message are transmitted. In the at least one further group, supplementary information about basic information contained in the first group is provided transfer. The type of supplementary information is classified, with certain types of supplementary information being identified by identifiers, so-called labels.
  • a certain identifier is assigned further identification bits which characterize additional types of supplementary information.
  • This additional information may relate in particular, for example, to additional length information on traffic events, such as congestion, for example, to which only length data in the kilometer range has been transmitted so far.
  • traffic events such as congestion
  • this length information is often too inaccurate. This is especially true, for example, in the case of consideration of these traffic reports for the calculation of driving or detour routes in vehicle navigation systems.
  • the invention advantageously allows the specification of lengths or expansions in different orders of magnitude, that is, for example, in the 10 or 100 to 1000 meter range.
  • This supplementary information may in particular also be used, for example, for alternative lengths, for example in the form of number of houses or
  • the address space extended in the manner indicated can be further extended to identify further supplementary information types, in that additional additional identification bits are assigned to a specific additional identifier formed by the further identification bits, which mark additional additional supplementary information. If, for example, additional 4 bits are used for the additional identifier, the additional identifier 15 or 1111, for example, can span an address space for further additional identifiers, in turn then 4 bits in length.
  • the address space can be extended as part of a continuous standardization and definition of identifiers and additional identifiers for further future supplementary information types, whereby a downward compatibility is maintained.
  • FIG. 1 shows the first group 10 of a multi-group TMC message which is transmitted by means of the radio data signal in accordance with the RDS standard ISO 50 067.
  • the radio data signal is composed of groups of different group types but of constant length of 104 bits each.
  • Each group 10, 20,... Comprises four blocks 11, 12, 13 and 14, each having 26 bits, the first 16 bits 111, 121, 131, 141 of each block, the data word, the actual information , the remaining 10 bits 112, 122, 132, 142 of each block 11, 12, 13, 14, the correction word, redundancy information for error detection and correction included.
  • bits Y10 through Y0 indicate the type of event in coded form.
  • the codes for different events already contain length information, congestion 1km, congestion 2km, etc.
  • Bits Y13 through Y11 indicate an amount of traffic event such that it extends over one or more encoded locations along a road.
  • Y14 is a heading bit indicating the direction of travel along the affected road section.
  • the second and optionally further groups of a multi-group message have the structure shown in FIG.
  • the basic structure is identical to that of the group shown in FIG. 1 and described above. What is essential here is that for the supplementary information, first the bits Y11 bos Y0 of the third block 13 and the bits Z 15 to Z0 are available for additional information about the basic information contained in the first block.
  • the first four bits Y11 to Y8 are used according to standard as identifiers 21 for the type of additional information. According to the 1999 pre-standard, the labels have the meanings given in FIG.
  • Label is the identifier in decimal notation, behind the length of the spanned by the corresponding identifier data field and "Type of Information" in each case the meaning or type of supplementary information contained in the data field specified.
  • Label 0 thus spans, for example, into data fields of length 3 bits, in which information about the duration of the traffic disruption is contained in encoded form, whereas label 10, for example, has a data field of 16 bits length, in which detailed information about the bypassing of the encoded in the first block Traffic disruption are included.
  • Label 12 in the current version of the standard is already assigned for information on which point the traffic event is located exactly on a section of the route defined by a location code and the direction of travel.
  • the identifier 15, which has not yet been assigned is used to open an address space for further identifiers 22.
  • this additional address space may comprise further 4 bits Y7 to Y4, which already belong to the actual data field for the supplementary information in the labels 0 to 14.
  • 16 further identifiers 22 can be defined, which can accordingly define 16 additional types of supplementary information.
  • 16 other identifiers are used to identify other types of supplementary information, the 16th of the other identifiers, however, spans a further address space for second additional identifiers. This form of cascading is basically continued until the available bits Y7 through Z0 are exhausted.
  • the additional identifier 22 is followed by the data field 23 defined by it, for example 5 bits in length, that is to say with the data bits Y3, Y2, Y1, Y0 and Z15. This is followed by another data space 24 with the bits Z14 to Z0 of the fourth block 14, which can be used for other additional information as provided in the specification ISO 14819.
  • Length information about traffic events transmitted in the first group of the multi-group message can be specified in more detail with this supplementary information.
  • messages may include a message of content "Traffic jam three blocks between intersection A and intersection B" or "10 km of congested traffic 10km starting 500m before AS B on highway X between AS A and AS B" be coded.
  • the message would contain in the second group the identifier 21 or the label 15, furthermore the further identifier 22 with the content 0 or 1 and finally the corresponding additional information in coded form in which by the combination of label 15 and the corresponding one further identifier 22 defined data field 23.
  • FIG. 3 shows a receiver 50 for receiving and evaluating coded traffic reports broadcast by a transmitter 70.
  • a transmitter 70 for example, without restriction of the general public is an RDS radio receiver.
  • the antenna signal is demodulated in a receiver 52 in a conventional manner.
  • the resulting multiplex signal contains on the one hand audio signal information which is decoded in subsequent stages 54 and output via loudspeakers.
  • the multiplex signal also contains the RDS signal, which is evaluated in an evaluation circuit 55.
  • the traffic messages contained in the RDS signal are isolated and decoded by means of decoding information stored in a memory 60 and converted into outputable e.g. Font data or audio data converted.
  • the codes 61, 62, 63, 69 are associated with corresponding outputable information 71, 72, 73, 79 in the memory 60, so that by addressing the memory 60 with the received codes corresponding outputable information can be read out.
  • the overall message generated by decoding the basic information of the first group 10 and the supplementary information of the second group 20 can be displayed, for example, on a display 56 of the device.
  • the radio receiver 50 can be connected to a vehicle navigation system 57 or it can be an integrated device 50 in which both a radio receiver and a navigation system functionality 57 are present. This can be fed from the received information derived traffic message information, which is for a dynamic route calculation, i. a route calculation with congestion avoidance and / or other consideration of traffic disruptions are used.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Circuits Of Receivers In General (AREA)
  • Traffic Control Systems (AREA)
EP05104722A 2004-07-23 2005-06-01 Procédé pour transmettre des messages numériquement codés en groupes de données et recepteur Ceased EP1619642A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004035983A DE102004035983A1 (de) 2004-07-23 2004-07-23 Verfahren zur Übertragung von digital codierten Meldungen in Datengruppen und Empfänger

Publications (2)

Publication Number Publication Date
EP1619642A2 true EP1619642A2 (fr) 2006-01-25
EP1619642A3 EP1619642A3 (fr) 2007-08-01

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EP05104722A Ceased EP1619642A3 (fr) 2004-07-23 2005-06-01 Procédé pour transmettre des messages numériquement codés en groupes de données et recepteur

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EP (1) EP1619642A3 (fr)
DE (1) DE102004035983A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4419727A (en) * 1979-01-02 1983-12-06 Honeywell Information Systems Inc. Hardware for extending microprocessor addressing capability
US4432067A (en) * 1981-05-07 1984-02-14 Atari, Inc. Memory cartridge for video game system
DE3536820A1 (de) * 1985-10-16 1987-04-16 Bosch Gmbh Robert Verkehrfunk-decoder
ATE158886T1 (de) * 1987-05-09 1997-10-15 Koninkl Philips Electronics Nv Einrichtung für empfang und verarbeitung von strassennachrichtenmeldungen
DE19905893A1 (de) * 1999-02-11 2000-08-17 Bosch Gmbh Robert Verfahren zur Übertragung von digital codierten Verkehrsnachrichten und Funkempfänger dazu

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DE102004035983A1 (de) 2006-02-16
EP1619642A3 (fr) 2007-08-01

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