EP0290679A1 - Einrichtung für Empfang und Verarbeitung von Strassennachrichtenmeldungen - Google Patents

Einrichtung für Empfang und Verarbeitung von Strassennachrichtenmeldungen Download PDF

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Publication number
EP0290679A1
EP0290679A1 EP87200845A EP87200845A EP0290679A1 EP 0290679 A1 EP0290679 A1 EP 0290679A1 EP 87200845 A EP87200845 A EP 87200845A EP 87200845 A EP87200845 A EP 87200845A EP 0290679 A1 EP0290679 A1 EP 0290679A1
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EP
European Patent Office
Prior art keywords
message
messages
route
regions
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.)
Granted
Application number
EP87200845A
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English (en)
French (fr)
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EP0290679B1 (de
EP0290679B2 (de
Inventor
Jacques Francois Mauge
Serge Verron
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8197615&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0290679(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Priority to EP87200845A priority Critical patent/EP0290679B2/de
Priority to AT87200845T priority patent/ATE158886T1/de
Priority to DE3752122T priority patent/DE3752122T3/de
Priority to CA000566001A priority patent/CA1323426C/en
Priority to US07/190,542 priority patent/US4907159A/en
Priority to AU15840/88A priority patent/AU614745B2/en
Priority to JP63110638A priority patent/JP2720975B2/ja
Publication of EP0290679A1 publication Critical patent/EP0290679A1/de
Publication of EP0290679B1 publication Critical patent/EP0290679B1/de
Publication of EP0290679B2 publication Critical patent/EP0290679B2/de
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0968—Systems involving transmission of navigation instructions to the vehicle
    • G08G1/0969—Systems involving transmission of navigation instructions to the vehicle having a display in the form of a map
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/123—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams
    • 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
    • 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 present invention relates to a device for receiving and processing road information messages sent in digital form, each message comprising at least a first section for indicating the area of the road network to which the message relates, which device comprises for monitoring of data processing a data processing unit which is connected to a bus for data transfer, to which bus are also connected a reception memory for temporarily storing the received messages, a selection unit making it possible to select from the stored messages those concerning a zone to be designated and a presentation unit for presenting the selected messages.
  • the traffic information messages are coded according to the specifications of the radio data system RDS (Radio Data System) and transmitted from a radio station.
  • RDS Radio Data System
  • a first section of each message sent indicates the area of the road network to which the message relates. This area can be formed by a road or by a region of a country.
  • the user who wishes the traffic information messages for a zone according to his choice will use the selection unit to indicate the zone chosen to the central unit. Under the control of this data processing unit, the content of the reception memory will be scanned entirely in search of messages relating to the designated area. Each message thus identified will be transmitted to the message presentation unit that the presentation to the user. Thus the user is able to receive only traffic information messages relating to the area of his choice.
  • a disadvantage of the known system is that during each request made by the user, the reception memory is scanned entirely. This places a heavy load on the data processing unit at each request and can, when there is a large quantity of messages stored in the reception memory, impose a relatively long search time.
  • the object of the invention is to provide a device for receiving and processing traffic information messages where it is not necessary during each request to browse the entire content of the reception memory and where the search time is substantially shortened.
  • a device for receiving and processing traffic information messages is characterized in that the device comprises a message analysis unit which comprises a memory-table of zones, which analysis unit is provided for recognizing on each reception of a message the zone in question on the basis of said first section of the received message and to arrange in the zone table, by means of at least one indicator for each message, the messages received according to the zones to which they belong , which selection unit is provided to have access to the zone table and to carry out said selection by taking messages from the zone table for the designated zone.
  • the message analysis unit will, after each reception of a message, analyze the first section of the message in order to recognize the zone to which it relates.
  • the analysis unit When the analysis unit has recognized the zone to which the received message relates, it will store at least one indicator for this message in the zone table at a location designated for this zone. This indicator is for example formed by the address where the message in question is stored in the reception memory.
  • the selection unit When the user has indicated his choice, the selection unit will select from the zone table only the place designated for the zone requested. Thus, the selection takes place more quickly since it is no longer necessary, during each request, to browse the entire content of the reception memory but only to take the indicators stored in the place designated for the requested area.
  • a first preferred form of a device according to the invention is characterized in that the memory-table of the zones comprises a table of routes where the messages are arranged according to the routes to which they relate and in that the indicators consist of the addresses at which the messages in question are stored in the reception memory.
  • the selection and storage in the route table can be carried out on the basis of the category and number of the routes.
  • a second preferred form of a device according to the invention is characterized in that the device is equipped with a tracking unit for locating in a received message the region to which it relates, which message analysis unit is connected to the locating unit and in that the zone memory table includes a table of regions where the messages are arranged according to the regions to which they relate and in that the indicators consist of the addresses to which the messages in question are stored in the reception memory.
  • the locating unit makes it possible to locate in a received message the region to which it relates and thus offers the possibility of carrying out a selection and storage based on the regions.
  • the device comprises a correspondence-routes-regions table for storing for a predetermined number of roads in the road network to which the correspondence-routes-regions table relates an overflow index indicating the maximum number of traffic messages for each of the routes. of said predetermined number, said device being equipped with a verification unit connected to the correspondence-routes-regions table and to the routes table to verify whether the number of messages stored for each route does not reach the number indicated by l overflow index for the route in question, and to eliminate the presence of a message for a route for which the number of messages stored in the route table has reached the number indicated by the overflow index.
  • the use of an overflow index and the verification unit makes it possible to limit the number of messages to be memorized and to better share the content of the reception memory between the different zones.
  • the verification unit is provided for carrying out said elimination of the presence of the oldest message among said number of messages.
  • the oldest messages are thus regularly eliminated, thus not obstructing the reception memory for the reception of new messages.
  • the locating unit comprises a correspondence table-roads-regions where are stored for each of the roads a predetermined number of roads in a road network at least one index indicating at least one region crossed by the road in question .
  • a correspondence-routes-regions table allows a certain freedom in the choice of the division of one or more countries into a number of regions. Thus it is possible either to divide a country according to the existing provinces or departments, or to take for each region a predetermined area.
  • a third preferred form of a device according to the invention is characterized in that the verification unit is also provided for locating with the aid of the correspondence-routes-regions table respectively of the correspondence table-regions-routes to which region respectively to which route the message whose presence has been eliminated relates to and also to eliminate from the table of regions respectively of the table of routes the message whose presence in the table of routes respectively of the regions has been eliminated.
  • the device is provided with a route table and a region table, it is essential when the presence of a message has been eliminated in one of the two tables, to also eliminate the presence of this message in the 'another table.
  • each message message includes at least one sequence composed of two blocks, and where each block comprises an information part and a control part, the control part further comprising an offset word for the synchronization of the blocks, and where for a predetermined block a first and a second word offset is usable
  • a preferred form of this device is characterized in that, for the first sequence of a message the first offset word is used and for the other sequences of this same message the second offset word is used, and in that the device is provided with a decoder for decoding the offset word of a received message and generating a positioning signal when decoding a first offset word, which device includes a sequence counter connected to the decoder, which sequence counter is positionable under the control of a positioning signal.
  • the sequence counter is used to check the correct sequence of reception of sequences.
  • the selection unit is provided with means allowing the selection between an intersection and / or a union of at least two zones.
  • means allowing the selection between an intersection and / or a union of at least two zones.
  • the device is provided with a conversion memory linked to the presentation unit and which is addressable by different code words and where other code words are stored for the presentation of the message.
  • a conversion memory linked to the presentation unit and which is addressable by different code words and where other code words are stored for the presentation of the message.
  • each message has a third section where an offset value is used to indicate another place relative to the place mentioned in the second section, and in that the device is provided with an address generator to form an address for the conversion memory on the basis of the second and third section of the message .
  • an address generator to form an address for the conversion memory on the basis of the second and third section of the message .
  • the device When the device according to the invention is connected the device is connected to a road navigation system for vehicles, which navigation system is equipped with means for determining a route between a point of departure and a destination, it is advantageous that the system of navigation is equipped with means for transmitting to the selection unit at least one area traversed by said route and for receiving messages relating to the designated area, said means for determining a route being provided for analyzing the received message and for recognizing in the message received if there is a traffic problem in the designated area and to determine a new route in the event of a traffic problem.
  • the road navigation system When the road navigation system is connected to the device according to the invention, it can itself select the messages for the zone or zones crossed by the route which it has just determined. When it now appears that there is a traffic problem on the initially determined route, the means for determining a route can then determine a new route, in order to circumvent the traffic problem.
  • the device according to the invention can contribute to improving road safety.
  • FIG. 1 illustrates the environment in which a device according to the invention is used.
  • a national (or regional) road information center (1) collects all the road information (accident, roadworks, traffic jam, freezing weather, etc.) transmitted to it. This traffic information is then selected and those which have a value for the proper functioning of road traffic are transmitted by means of a link 3 to a radio station 4.
  • the radio station is equipped to code the messages and transmit them in accordance RDS (Radio Data System).
  • RDS Radio Data System
  • the radio station can also add other messages, to those supplied to it by the traffic information center, for example the presence of radar control at a determined location.
  • the radio station is equipped with a unit 5 formed for example by a keyboard and an RDS encoder. The messages in RDS format are then transmitted on the air using transmitter 2 of the radio station.
  • a vehicle 7 To receive messages in RDS format, a vehicle 7 must be equipped with a receiving antenna 8 and a radio receiver 9 capable of receiving and decoding messages transmitted in RDS format.
  • the radio receiver 9 furthermore comprises a radio (cassette player) 10 a keyboard 11.
  • a person traveling on board a vehicle 7 equipped with a radio receiver 9 is able to receive the information in RDS formats transmitted by the transmitter 2.
  • the RDS system offers the user the possibility of having at any time of the day road traffic information for a route or a region according to his own choice and to hear this traffic information in his own language.
  • Figure 2 illustrates the different components of the group structure of the RDS system.
  • the group has 104 bits and is divided into four blocks. Each block is made up of a 16-bit information part and a 10-bit part for protecting this information.
  • the BL1 block includes: PI (16 bits) is the identification of program A and the 10 control bits which are used to protect and identify the block. Parts B, C and D of the other blocks have the same function in their respective blocks as part A in block BL1.
  • BL2 block includes: TG these are 5 bits which identify the group, for example traffic information, information concerning radio programs, etc.
  • TP is a bit which informs if the station gives traffic messages PTY these are five bits which indicate the type of program, for example sport, classical music, etc.
  • SYNC is a synchronization word used for the processing of the message by the receiver; which breaks down as follows:
  • a message will therefore consist of a maximum of eight sequences.
  • the advantage of counting by decrementation lies in the fact that the system can thus be aware of the number of sequences of the same message which will follow and can also detect if sequences are missing.
  • the blocks BL3 and BL4 comprise SMR1, SMR2 these are two sub-sequences of each 16 bits comprising the road information itself and the whole of which forms a sequence identified by the bits SI.
  • the messages if they remain current, are repeated and if not, are updated approximately every five minutes. In this period of approximately five minutes, the transmitter can send 420 traffic information messages in RDS format using 25% of the total capacity of the RDS resource.
  • FIG. 3 illustrates in more detail an example of the SMR1 and SMR2 parts of a group in RDS format.
  • the same message will consist of two sequences distributed over two successive groups.
  • FIGS. 3a and c respectively 3b and d represent the sub-sequences SMR1 and SMR2 of two successive groups.
  • the SMR2 sub-sequence illustrated in Figure 3b is composed only by PR-LOC information.
  • This PR-LOC information is composed of 16 bits and indicates the place or the surroundings to which the message relates (for example a tunnel, a motorway exit or the name of a city).
  • the SMR1 sub-sequence of the second sequence of the message and illustrated in FIG. 3c comprises the sections CLR, RNN.
  • the SMR2 sub-sequence of the second message sequence and illustrated in Figure 3d includes the DIR OFFS, ST and SAV sections.
  • the DIR section has a bit that indicates the direction.
  • the OFFS section has four bits and is used to provide a more detailed specification of the location (PR-LOC) to which the message relates.
  • the OFFS section therefore indicates a second location in relation to the location cited in PR-LOC.
  • the DIR section and the OFFS section can for example indicate: 0 0000 no second place in the same direction 1 0000 no second place in the opposite direction 0 0001 to 1111 a positive offset between 1 and 15 to add to PR-LOC 10001 to 1111 a negative shift between 1 and 15 to add to PR-LOC.
  • the ST section has 6 bits and indicates an estimate of the duration of the problem to which the message relates, for example in case the message indicates a blocked route, the ST section indicates for example a time at which the route will probably be opened again to circultion.
  • the 64 26 possibilities offered by the 6 bits can for example be divided into 48 (1/2 hours per day) + 7 (days per week) + 4 (weeks per month) + 5 (months).
  • the after-sales service section has 5 bits which indicate static driving advice, such as "winter equipment required" or "reduce speed".
  • the notices can be supplemented by means of long messages (part DAV of figures 3e and f), in these parts DAV can then be taken from dynamic advice, who can supplement the static advice if necessary.
  • DAV can indicate "at 70 km / h”.
  • the SMR1 sub-sequence illustrated in FIG. 3e comprises the sections PA, STT and DAV.
  • the STT section (6 bits) indicates a start time (for example from "22.00 hours").
  • the PA section has 4 bits and is used to indicate a country other than that covered by the transmitting station.
  • FIG. 4 schematically illustrates an example of a device according to the invention.
  • the device comprises a data collector terminal equipment (DCE) which further comprises a radio receiver 30 connected to an antenna 38 and provided for receiving coded messages in RDS format.
  • the DCE is connected to a terminal data processing equipment (DTE) which further comprises a reception memory 31 for storing the messages received by the DCE, which memory is in turn linked to a bus 32 for transporting information (addresses + data).
  • DTE terminal data processing equipment
  • a data processing unit 33 for example a microprocessor, a read only memory 35 a working memory 34, an extension table 36 and a table of places, a presentation unit formed by a generator speech 39 and an image generator 40 and a selection unit further comprising a keyboard 43, all of these elements are part of the terminal data processing equipment.
  • An output of the speech generator 39 respectively of the image generator 40 is connected to a speaker 41 (which may be the same as that used by the radio) respectively to a display unit.
  • the image generator and its display unit are optional.
  • Each message in RDS format received by the radio receiver is immediately stored in the reception memory 31 under the control of the data processing unit.
  • the data processing unit is informed, by means of a signal transmitted on line 44, each time that a new message is received.
  • the data processing unit then starts a process of analysis of the message whose an example which will be described by means of the flowchart illustrated in FIG. 5. The different stages of the analysis process will now be described below. 50 STRT start of the analysis process. 51.62 TG? the TG bits which identify the group are analyzed in order to check whether it is a message containing traffic information. 52 PG1 If the bits TG indicate that it is not traffic information, the data processing unit (33) jumps to another program PG1 which will then process the message in question.
  • the programs PG1 and PG2 will not be described in detail since the device according to the invention more particularly processes messages comprising road information. 55 OFF-C ⁇ ? It is a test which is used to check whether the sequence received is the first of a new message. In a preferred form of the device according to the invention, this verification is carried out using the shift word included in block BL3 of the group. To indicate that it is a first sequence of a new message a first shift word (C ⁇ ) is used instead of a second shift word (C) which is used to indicate the other sequences of the message (on this subject, see Annex 1 (page 33, March 1984 edition) specifications of the RDS system for the broadcasting of frequency modulated radio data published by the European Broadcasting Union).
  • the data processing unit then performs an offset operation on block BL3 to determine whether the first offset word C ⁇ has been used.
  • the offset of the first offset word will generate a position signal which will therefore indicate to the data processing unit that it is indeed the first sequence of the message.
  • the data processing unit will abandon the message and wait for the arrival of d 'another group.
  • 56.64 BB (n-1) BB (n)? It is a test which is used to determine whether the link bit BB of the group received (group n) is equal to the link bit of the previous group (group n-1). A negative result of this operation indicates that this is a new message.
  • the bit BB (n-1) is for example stored in a buffer register of the data processing unit.
  • 57 BB (n) -> ; SI -> CS The data processing unit loads the value BB (n) into the buffer register and postion, under control of the position signal, a sequence counter CS at the value SI.
  • the value SI being the value indicated by the group sequence identification bits received.
  • the counter CS is used on the one hand to indicate the number of addresses to be reserved in the reception memory, on the other hand to form the addresses in the reception memory to which the sequences must be stored.
  • the data processing unit forms, with the help of the counter CS, the addresses at which the sub-sequences SMR1 and SMR2 of a received sequence must be stored in the reception memory, and then stores the SMR1 and SMR2 sub-sequences at the addresses indicated.
  • 59 CS 0? It is a test which is used to check whether the counter CS indicates the value "0" indicating that all the sequences of the same message have been memorized.
  • 61 CS CS-1 Decrement by one the value indicated by the counter CS.
  • the message MB comprises two sequences and only the last sequence of the message MA is repeated in order to illustrate the change of the link bit BB.
  • the radio receiver When the radio receiver has received the first group of the message MB, it informs the data processing unit which starts (50) the analysis process.
  • step 55 (OFF-C ⁇ ?).
  • step 58 the address ADD1 is formed and where the parts SMR1 are stored ( YY) and SMR2 (Y ⁇ Y ⁇ ) at the address ADD1.
  • the value FF being the address of the first free location in the reception memory, this value is for example stored in a second buffer register of the data processing unit.
  • the values YY and Y ⁇ Y ⁇ represent the content of the parts SMR1 and SMR2).
  • the data processing unit After having stored a received message in the reception memory, the data processing unit will analyze the content of the message in order to detect to which zone (route, region) the message relates. To this end, the data processing unit uses a table memory of the zones formed by two tables which are illustrated in FIGS. 7 a and b. These tables form, in a preferred form of the device according to the invention, part of the working memory (34, FIG. 4) of the device. It will be clear that these tables can also be formed by two individual memories (RAM type) connected to the bus 32.
  • FIG. 7a illustrates the table of regions which is used to classify the messages according to the geographic regions to which it relates. These regions can correspond to the geographic division of the country (province, department) or be formed by an arbitrary division of the country.
  • the table is in matrix form and can be addressed by row and by column.
  • the indices indicating the different regions are stored (for example the regions B2 and B5).
  • the columns entitled ADD-MES are used to store indicators, for example the addresses (ADD) to which messages belonging to the region of their respective rank are stored in the reception memory.
  • ADD addresses
  • the column CS / R indicates the number of messages for the region in question (four for B2, one for B5) and the DEB column indicates the overflow index for the region in question.
  • the overflow index for the region is a number assigned to this region which indicates the maximum number of messages allocated for the region in question.
  • this overflow index is the same for each region and the column DEG-REG is not included in the table of regions.
  • a dedicated overflow index is assigned to each region.
  • the advantage of this preferred form is that the density of road traffic varies from region to region and from road to road. In France, for example, the Paris region, with high traffic density, will have a higher overflow index than that of Auvergne. It is obvious that the greater the density of traffic, the greater the probability that there will be one or more traffic messages.
  • the overflow index thus makes it possible to equitably share the present capacity of the tables and of the reception memory.
  • the different overflow indices are for example stored in a table as described below.
  • FIG. 7b illustrates the route table which is used to classify the messages according to the numbering of the routes (class + number, CLR, RNN) to which they relate.
  • the route table is organized in the same way as that of the regions.
  • the CS / RNN column indicates the number of messages for the route in question and the DEB-RN column indicates the overflow index for the route in question.
  • the route table and the region table are loaded, it is necessary to describe how the region to which it relates is obtained from a received message.
  • the message does not include a part where the region in question is taken up.
  • an indicator indicating the region could be taken up in the PR-LOC part and then the analysis based on the region using the PR-LOC part.
  • the device uses, to recognize to which region a received message relates, a correspondence-route-regions table, which is illustrated in FIG. 8a.
  • This correspondence-routes-region table can be taken up in the read-only memory 35 of DTE or can be formed by an independent memory connected to the bus, which could even, if necessary, be in the form of a cassette or a memory card, allowing regular updating of the correspondence-routes-regions table.
  • the route-regions correspondence table can be addressed using the CLR-RNN part of the message.
  • the road-regions correspondence table includes a REG-ALL column where the regions crossed by the road in question are mentioned, and a DEB column where the overflow index of the road in question is mentioned.
  • the A1 motorway crosses regions B8 and B9 and has an overflow index equal to 8.
  • the device according to the invention also comprises a correspondence-regions-routes table which is illustrated in FIG. 8b and which, like the correspondence-routes-regions table, can be taken up in the read-only memory 35 of DTE or be formed an independent memory connected to the bus.
  • the correspondence-regions-roads table is addressable by means of the region code (REG) and comprises an RNN-ALL column where the roads crossing the region in question are mentioned, and a DEB column where the index of overflow of the region in question.
  • REG region code
  • FIG. 9 illustrates by means of a flowchart the analysis of the content of the messages received. This content analysis is performed each time a new message has been stored in the reception memory, that is to say after the completion of the process described in FIG. 5.
  • the data processing unit in its function d the analysis unit starts (70) then the analysis of the content to execute the steps mentioned below.
  • 71AD CLR-RNN the CLR-RNN sections (figure 3c) of the message are read in order to identify the route concerned.
  • 72 E TB? this is a test to check whether messages concerning the route, to which the new message received relates, are already included in the route table ( Figure 7b).
  • the data processing unit traverses the CLR-RNN column of the route table.
  • CCOL in case there are already other messages present for the route in question, the data processing unit has identified in step 72 the row (R) where these other messages were taken up, and it will now look for the first free column (C) in the row in question.
  • 74,86RD-MA the address at which the received message is stored in the reception memory is identified.
  • 75.87 WRT this address is now entered in the route table at the location (RC) determined during step 73.
  • CS / R CS / R-1 if the message which, has been destroyed, is also found in the table of regions, its reference (s) is (are) canceled, the other messages are advanced one column and the CS / R counter is decremented by one. All traces of the message that has been destroyed are thus erased.
  • a flag is positioned to indicate that the analysis based on the region takes place.
  • the data processing unit then goes using the CLR-RNN section and using the route correspondence table to determine, according to the method described above, the region to which the message refers.
  • the program will then be resumed from step 72, this time taking into account the table of regions.
  • 92 STP if during test 77 it is found that the analysis on the basis of the region has taken place, the flag is reset and the analysis program is finished.
  • FIG. 10 illustrates an example of a control keyboard forming part of the device according to the invention.
  • the control keyboard includes a display unit, for example an LCD 91 unit which makes it possible to display numbers as well as letters making it possible to indicate categories of roads (motorway, national road, departmental road) or regions (surface , department) from one or more countries.
  • the CLR / RNN key is used to indicate the choice of a route and the REG key is used to indicate the choice of a region.
  • the + / + key is used in selection mode on the one hand to increment the number displayed on the display unit 91 and on the other hand to indicate a union operation, that is to say that the user wishes to information on one or more routes and regions.
  • this + / + key is used for a positive movement of a pointer in a selection table.
  • the - / VAL key is used in selection mode on the one hand to indicate an intersection between a road and a region and on the other hand to validate the number displayed on the display unit. In presentation mode this - / VAL key is used to move the pointer negatively in the selection table.
  • the ENT key allows you to enter the choice you have made.
  • the REP key repeats the last message presented.
  • the ST key stops the presentation.
  • the EJ key cancels a message.
  • the TDC key is used for transparency.
  • Each button is provided with a diode (LED, indicated by a dot) which lights up temporarily when the button in question is pressed.
  • the control keyboard also includes an encoder (not shown in Figure 10) which, among other things, encodes the signal produced when the ENT key is pressed to form a digital word which is transmitted via bus 32 to the control unit. data processing.
  • the CLR / RNN key When a driver or other user wishes traffic information on a route of his choice, he will press the CLR / RNN key, which will cause the display of a first class of routes, for example the letter A indicating a highway, on the display unit. If the required route class is displayed, the user will press the ENT key so as to send his choice to the data processing unit. If a road class other than that required is displayed, the user will press the + / + key to display other road classes. After entering the required road class, the user will again press the CLR / RNN key, which will cause the display of figures on the display unit. By means of the + / + key the user will increment the number displayed until the number of the required route appears, and he will then enter this number by means of the ENT key. If the user wants road information on a region, he will operate in the same way as choosing a route by pressing the REG key, however. The indication of a specific region can be done for example by means of a number, for example 75 for
  • the choice of a number can be made decimal by decimal using each time the - / VAL key to validate the displayed decimal.
  • the data processing unit When the data processing unit receives keyboard commands it will start (100) the selection program illustrated in figure 11 by means of a flowchart. The data processing unit will then execute the steps of the selection program mentioned below.
  • 101 CL the content of a selection table is deleted.
  • This selection table is for example made up of part of the working memory, and is used to temporarily store the selected messages, for example by means of the addresses at which they are stored in the reception memory.
  • 102 RD-SEL reading of the binary word identifying the choice of the user. In the event that this choice involves a union or intersection operation, only the part referring to the choice of a route or a region will be taken into consideration during this stage.
  • 103 RD-CNT the content of the selection table is read.
  • the data processing unit will scan the first column of the region table and / or the route table, as the user chooses, to check if there are messages for the region or route that the user has chosen. To this end, the data processing unit compares, for example, each word in this first column with the binary word received and, when the comparison is positive, the addresses stored in the row where the required route or region is located. are collected. 106 ST-COMM the content of the selection table is compared with the addresses taken from the row identified in step 105 and, since an intersection operation is required, only those addresses which are as well in the selection in the row marked are kept in the selection table, the others are deleted.
  • the keyboard will encode the signals of these keys and form one or more binary words which it sends to the data processing unit, which will then start the execution of the selection program by erasing the content of the selection table (step 101).
  • Data processing unit will then read part A8 of the choice and the content of the selection table. Since the first part of the driver selection is always a union operation, the data processing unit will, after execution of step 104, go to step 107 where it will check if there are messages for the A8 motorway stored in the route table and where it will find these messages in the first row.
  • the data processing unit will take these addresses 12, 13, 28, 34, 38, 52, 71 and store them in the selection table (step 108).
  • step 109 the data processing unit finds that all of the choices have not yet been taken into consideration and it will pass to step 111 where it will locate the intersection operation. It then goes again to step 102 to read the choice B2 there and to step 103 to read the content of the selection table there.
  • step 104 the unit then notes that an intersection operation is required and proceeds to step 105 where it notes that there are messages for the region B2 and takes the addresses 12, 21, 34 , 38.
  • step 106 the intersection operation is carried out and the addresses 12, 34, 38, which form the intersection between A8 and B2, are kept in the selection table, while the other addresses are deleted. . Since all the choice has now been taken into consideration (step 109) the data processing unit goes to subroutine 110 to present to the driver the messages stored at addresses 12, 34 and 38 of the reception memory. Since the TDC key has not been used, the selection program has ended.
  • a union or intersection operation is not limited to a region and a route but that it can be extended to several choices, such as for example (B2 U B5) (A8 U RN64) or the symbol U indicates a union operation and the symbol ⁇ an intersection operation. Such a choice will then require several courses in the selection program.
  • the choice of the user can also be formulated as follows. Indeed one can imagine that when a driver is going to take a motorway which spans several hundred kilometers, such as for example the A5 motorway in federal Germany, which goes from Darmstadt to Basel, and that when the driver does not will only use part of this highway, for example the part between Heidelberg and Düsseldorf, he will only be interested in road messages concerning the part he is going to take. The driver will then ask using the keyboard, the intersection between A5 and the Heidelberg - Düsseldorf region. If the keyboard would also be able to allow selection on the basis of the exit numbers of a motorway, it would suffice to type on the keyboard the numbers of the exits concerned.
  • Traffic information can also play a role in the planning of a route such as carried out by a road navigation system for vehicles.
  • road navigation system for vehicles In such car navigation systems are for example described in the article "Elektronische Lotsen” appeared in Funkschau No. 22, 1986, p. 99-102.
  • a road navigation system for vehicles is equipped with means for determining a route between a starting point and a destination.
  • the device according to the invention can be connected to a road navigation system and thus the means for determining the route can take into account the road information relating to the roads which make up the journey to be traveled.
  • the navigation system must determine a route between a starting point and a destination introduced by the driver and that the route as determined in the first place comprises inter alia a motorway whose exit to be taken would be blocked due to works.
  • the navigation system When the navigation system has determined its route, it then goes for each route or only for the main routes of its route, asking the device according to the invention for the road messages. This can be done for example by transmitting to the data processing unit a call indicating that traffic information is requested, and the binary code of the route or routes in question.
  • the data processing unit will then process these requests in a similar way to that used for commands from the keyboard, and transmit the required information to the navigation system.
  • the navigation system will now detect that the exit from the motorway to be taken according to the initially pre-blocked route, and will ask the means for determining a route to determine a new route where the exit in question will be avoided.
  • the navigation system in cooperation with the device according to the invention thus allows the driver avoid obstacles or traffic jams.
  • each message includes an ST part, indicating a probable duration of the problem
  • this ST part can also be taken into account in determining the route.
  • the ST section indicates "until 4:00 pm" and that the motorist leaves at 3:00 pm. 30 and that the exit in question is 150 km from the starting point.
  • the navigation system will then be equipped with means to take this information into consideration.
  • he will be equipped with a computer which will indicate to him that at an average speed of 100 km / h on the highway he will need an hour and a half to reach this exit.
  • This one and a half hour value will then be added to the present time (3.30 p.m.) indicated by the car clock (3.30 p.m. + 1.30 a.m.
  • the navigation system will be equipped to compare this calculated time (5:00 p.m.) with the time indicated in ST (4:00 p.m.) and it will note that for the time the motorist has reached the exit in question it will be again opened. In this case, the means for determining a route will not receive orders to determine a new route. Similarly, the navigation system in cooperation with the device according to the invention can also take the STT section into consideration when determining an route.
  • the device according to the invention uses to allow the presentation of a message, an extension table (36, Figure 4) and a table of places (37, Figure 4), which are illustrated in Figures 12a and b respectively.
  • This extension table and this places table can also be included in the read-only memory 35 and DTE. If they are made up of independent memories connected to the bus, they could even, if necessary, be in the form of cassettes or memory cards.
  • the extension table (FIG. 12a) is addressable by means of the CLR-RNN part of the message as well as the PR-LOC part.
  • a row For each road there is a number of reserved row, and a row includes an ORD part indicating a specific place of the road, for example for a motorway an exit or a resting place, and for a national or departmental road a crossing.
  • a row also includes an ADR part indicating a place in the table of places.
  • each row is not necessarily filled with information, this makes it possible in the event that there is the possibility of writing in the table (EEPROM memory, or magnetic tape) to add thereto at the required places new information, for example. example of new motorway exits.
  • the places table can be addressed using the address taken from the extension table (ADR column), and has a TXT APP column reserved for the name of the place indicated, a PAR column where the code to be stored is stored. speech generator to form a word into words, and a REG column indicates the region to which the indicated place appears.
  • the CLR-RNN, PR-LOC parties now form an A7.2 address to address a place in the extension table.
  • the data processing unit will address this space A7.2 and take there data 1024 which it will use to address the table of places. At the place bearing the address 1024 of the table of places it will find the code 022c which it presents to the generator of words which will form "HAMBURG" in the form of words.
  • this DIR-OFFS part indicates the binary value 0 1010 indicating a positive offset of 10 to add to PR-LOC.
  • PR-LOC 2
  • the data processing unit then presents this value 021Q to the speech generator which will form "KIEL" in the form of speech.
  • HDD does not have one of the values 00.01,10
  • HDD has the value 11 and is therefore intended for the data processing unit 127 HC + HT + EFF
  • the combination of values HC + HT + EFF forms one or more addresses to address one or more places in a local memory of the speech generator and where of images, depending on whether it has been activated.
  • the generator in question will present the information coded in CLR / RNN + PR-LOC + DIR 132 OFFS? It is a test to check if there is an OFFS value other than 00000 or 10000, indicating a second location in the message.
  • 133 PR-LOC + OFF If there is a second location in the message, the OFF value is added to the PR-LOC value and will thus form an address for a second location in the extension table and in the table. places. 135 LM? It is a test to check if it is a long message.
  • 136 AUT The other parts (SAV, DAV) of the group, if present, are transmitted to the generator in question and presented to the user.
  • STP This is the end of the program.
  • Figures 14a and b illustrate an alternative form of the SMR2 sub-sequences of two successive groups.
  • the sub-sequence illustrated in FIG. 14a comprises a LOC1 part (8 bits) and a LOC2 part (8 bits) which each indicate a respective location to which the message relates.
  • the DIR, ST and SAV parts are similar to those of the groups illustrated in FIG. 3d
  • the SCTN part represents a section of the route, mentioned in the CLR-RNN part of the message, for example the section between the Düsseldorf and Strass Victoria exits on the A8 motorway in federal Germany.
  • each route of the road network has been divided into different sections (32 sections maximum if the SCTN part has 5 bits) and the locations LOC1 and LOC2 then relate to the section mentioned in SCTN.
  • This different configuration is located at the level of the addressing of this table, the content of the ADR part being equal to that shown in figure 12a but organized in a different way.
  • the extension table 140 illustrated in FIG. 15 includes a first list of addresses 141 and n sections 142-i (1 ⁇ i ⁇ n ).
  • the first address of each section 142-i is indicated by a letter Pi.
  • the first address list 141 comprises these n addresses Pi and to each route Ri of the road network is assigned a Pi address.
  • Each section 142-i includes: - a first sub-section 143 where a number N is indicated indicating in how many sections the road Ri in question is divided; a second sub-section 144 comprises a second list of addresses 144 which is addressable by means of the SCTN part of the message (FIG. 14b) and indicates for each SCTN (i) an address SA (i) which is the first address d '' a third sub-section 145-j - m third sub-sections 145-j (1 ⁇ j ⁇ m).
  • the different places of each third sub-section being addressable by means of the LOC1 or LOC2 part of the message and at each place thus addressed is stored an ADR address (see FIG. 12a) indicating a place in the table of places.
  • This address ADR1 then indicates the place in the table of places where the name of the place to which the LOC1 part of the message relates is stored. The presentation of this part will then be done as described previously.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
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  • Remote Sensing (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Traffic Control Systems (AREA)
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EP87200845A 1987-05-09 1987-05-09 Einrichtung für Empfang und Verarbeitung von Strassennachrichtenmeldungen Expired - Lifetime EP0290679B2 (de)

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EP87200845A EP0290679B2 (de) 1987-05-09 1987-05-09 Einrichtung für Empfang und Verarbeitung von Strassennachrichtenmeldungen
AT87200845T ATE158886T1 (de) 1987-05-09 1987-05-09 Einrichtung für empfang und verarbeitung von strassennachrichtenmeldungen
DE3752122T DE3752122T3 (de) 1987-05-09 1987-05-09 Einrichtung für Empfang und Verarbeitung von Strassennachrichtenmeldungen
US07/190,542 US4907159A (en) 1987-05-09 1988-05-05 Device for receiving and processing road information
CA000566001A CA1323426C (en) 1987-05-09 1988-05-05 Device for receiving and processing road information
AU15840/88A AU614745B2 (en) 1987-05-09 1988-05-09 Device for receiving and processing road information
JP63110638A JP2720975B2 (ja) 1987-05-09 1988-05-09 道路情報メッセージ受信処理装置

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EP0451756A1 (de) * 1990-04-10 1991-10-16 COMPAGNIE GENERALE D'AUTOMATISME CGA-HBS Société Anonyme dite Informationsanlage für Busnetzbenützer
FR2660782A1 (fr) * 1990-04-10 1991-10-11 Cga Hbs Systeme pour l'information des usagers d'un reseau d'autobus.
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FR2701144A1 (fr) * 1993-01-29 1994-08-05 Renault Procédé et dispositif de consultation d'informations de trafic.
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EP0689742B1 (de) * 1993-03-15 2000-01-12 Command Audio Corporation Rundfunkempfänger zur informaionsverteilung unter verwendung eines hilfsträgers
EP0670565A1 (de) * 1994-03-04 1995-09-06 Regie Nationale Des Usines Renault S.A. Verfahren und Vorrichtung zur Wahl von Verkehrsnachrichten
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WO1996009615A1 (de) * 1994-09-23 1996-03-28 Robert Bosch Gmbh Verfahren und vorrichtung zum auffinden eines verfügbaren parkplatzes oder parkhauses
EP0725500A2 (de) * 1995-02-03 1996-08-07 Robert Bosch Gmbh Einrichtung zur Verwaltung von digital codierten Verkehrsmeldungen in Empfangsgeräten
EP0725504A2 (de) * 1995-02-03 1996-08-07 Robert Bosch Gmbh Radiodatenempfänger mit Einrichtung zur Ausgabe von empfangenen digital codierten Verkehrsmeldungen
EP0725504A3 (de) * 1995-02-03 1996-08-14 Robert Bosch Gmbh Radiodatenempfänger mit Einrichtung zur Ausgabe von empfangenen digital codierten Verkehrsmeldungen
EP0725500A3 (de) * 1995-02-03 1996-08-14 Robert Bosch Gmbh Einrichtung zur Verwaltung von digital codierten Verkehrsmeldungen in Empfangsgeräten
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WO1996037057A1 (de) * 1995-05-19 1996-11-21 Robert Bosch Gmbh Verfahren zur drahtlosen übertragung von digital codierten schiffahrts-/wasserstrassenmeldungen und vorrichtung zum empfang von schiffahrts-/wasserstrassenmeldungen
EP0768632A2 (de) * 1995-10-16 1997-04-16 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Funksignalempfänger für Kraftfahrzeuge mit einem RDS-Dekoder für digitale Signale
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EP1619642A2 (de) * 2004-07-23 2006-01-25 Robert Bosch Gmbh Verfahren zur Übertragung von digital codierten Meldungen in Datengruppen und Empfänger
EP1619642A3 (de) * 2004-07-23 2007-08-01 Robert Bosch Gmbh Verfahren zur Übertragung von digital codierten Meldungen in Datengruppen und Empfänger

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ATE158886T1 (de) 1997-10-15
JPS63294022A (ja) 1988-11-30
AU614745B2 (en) 1991-09-12
AU1584088A (en) 1988-11-10
DE3752122D1 (de) 1997-11-06
US4907159A (en) 1990-03-06
DE3752122T2 (de) 1998-04-02
EP0290679B1 (de) 1997-10-01
DE3752122T3 (de) 2004-07-29
CA1323426C (en) 1993-10-19
JP2720975B2 (ja) 1998-03-04
EP0290679B2 (de) 2003-08-06

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