EP0539708A2 - Récepteur de radiodiffusion, en particulier récepteur pour véhicules - Google Patents

Récepteur de radiodiffusion, en particulier récepteur pour véhicules Download PDF

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Publication number
EP0539708A2
EP0539708A2 EP92115777A EP92115777A EP0539708A2 EP 0539708 A2 EP0539708 A2 EP 0539708A2 EP 92115777 A EP92115777 A EP 92115777A EP 92115777 A EP92115777 A EP 92115777A EP 0539708 A2 EP0539708 A2 EP 0539708A2
Authority
EP
European Patent Office
Prior art keywords
radio receiver
region
radio
traffic
station search
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
EP92115777A
Other languages
German (de)
English (en)
Other versions
EP0539708A3 (en
EP0539708B1 (fr
Inventor
Peter Dipl.-Ing. Braegas
Wadym Dr. Dr. Ing. Suchowerskyj
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 EP0539708A2 publication Critical patent/EP0539708A2/fr
Publication of EP0539708A3 publication Critical patent/EP0539708A3/de
Application granted granted Critical
Publication of EP0539708B1 publication Critical patent/EP0539708B1/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
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/55—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for traffic information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
    • H04H60/49—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying locations
    • H04H60/51—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
    • 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 radio receiver, in particular a vehicle receiver, with a decoder for decoding digitally coded traffic messages according to the preamble of the main claim.
  • a traffic radio decoder is described, which is set up for processing digital signals. These signals are superimposed, for example, on an auxiliary carrier which is broadcast together with the FM radio program in the radio transmitter. As a result, the information that is present in these digital signals can be transmitted undisturbed in parallel to the actual radio program. In particular, this also applies to traffic messages which can be decrypted by demodulating the subcarrier mentioned. In addition to the signal transmission by means of subcarriers, however, it is also possible to add the digital signals in question to a digital radio transmitter, for example interlaced with the digital radio information.
  • traffic messages transmitted as digital signals are drafted in accordance with the same education law as the traffic messages broadcast in plain text, then instead of the complete information, memory addresses can also be transmitted which call standardized texts stored in memories at the receiver. This means that you can manage with a significantly lower data capacity during transmission. The consequence of this is that significantly more traffic messages about individual events can now be transmitted than was previously the case.
  • the restriction to the route taken may be too narrow if the driver is also interested in the traffic situation from other locations or traffic disruptions that last longer there, since he may want to travel to these locations at short notice.
  • DE-OS 39 14 104 it has already been proposed to provide a selection device in the radio receiver, by means of which the user of the radio receiver can individually specify a region whose traffic situation he would like to find out more about. Based on the specification, a station is then sought which essentially transmits information about this region. Furthermore, decoders can be switched in such a way that the supraregional traffic messages, which are also transmitted by this transmitter, for example, are hidden, so that only the information is output that is actually related to the selected region.
  • a radio receiver has therefore been proposed, which furthermore has a transmission memory in that all receivable radio transmitters are stored at regular intervals.
  • This table is compared with a table stored in a memory of the receiver, in which the radio transmitter determined Regions are assigned. If a broad match is now found between the received radio stations and the stored radio stations, the associated region is output and only those traffic messages are output that are assigned to the corresponding region.
  • it is either necessary to provide a second receiver for this station search or to interrupt the current program for the station search. Both are often perceived as disturbing.
  • the radio receiver according to the invention with the characterizing features of the main claim has the advantage that the region is determined when the radio receiver is not needed for a short time. This makes it possible to determine the region in which the radio receiver is located without disrupting the program flow or without undesired interruptions in a current program. The comfort of the radio receiver is significantly increased without the need for additional expensive receiving means.
  • the station search is carried out when a traffic message is played back. This measure ensures that the station search is carried out at regular intervals without disturbing. In this way, leaving a certain region can be recognized quickly and safely. It is also advantageous to carry out the channel search when a signal from a cassette memory or a CD player is being played back. Because at these times the Receiving part of the radio receiver is not required, it is possible here to perform a channel search more often. This measure is particularly suitable for determining regions even in geographically difficult areas. It is also advantageous that the station search is also carried out while searching for a new station.
  • FIG. 1 shows a radio receiver according to the invention
  • FIG. 2 shows the structure of a traffic message
  • FIG. 3 shows a flowchart for the work of the microprocessor in relation to the invention
  • FIG. 4 shows a table as it is stored in the radio receiver.
  • FIG. 1 shows a vehicle receiver designed as a radio receiver with an antenna 1 and a receiving part 2.
  • the receiving part 2 has a tuning unit 11 with which it is possible to search the entire radio area for receivable transmitters.
  • the receiving part 2 is followed by a demodulator 3.
  • the demodulator 3 is connected via a switch 4 to a low-frequency amplifier 5, to the output of which a loudspeaker 6 is connected.
  • a line leads from the demodulator 3 to an RDS decoder 7. With the RDS decoder 7 it is possible to filter out and evaluate digital data signals superimposed on the broadcast signal.
  • the RDS decoder 7 is connected to a memory 8 via a data line.
  • a speech synthesizer 9 is connected on the one hand, with which it is possible to convert digital data into speech.
  • the output of the speech synthesizer 9 is connected to the switch 4.
  • the switch 4 can be switched so that either the speech signal from radio receivers or the speech signal from the speech synthesizer 9 is to be routed to the low-frequency amplifier 5.
  • Another data output of the RDS decoder 7 leads to an RDS display 10.
  • the traffic information can thus also be reproduced visually.
  • a data line also leads to a transmitter memory 13.
  • the program identification code of the received transmitter is evaluated and stored in the transmitter memory 13.
  • the transmitter memory 13 is connected via a data line in a transmitter comparison table 14, this comparison table 14 having a non-volatile memory.
  • the transmitter memory 13 is connected to a control computer 12 which transmits the associated frequency from the tuning unit 11 to the transmitter memory 13 for each received transmitter.
  • the tuning unit 11 is also connected to the control computer 12.
  • the control computer 12 continues to operate the switch 4 when it is signaled by the RDS decoder 7 that new traffic messages have been received.
  • the control computer 12 is connected to the RDS decoder 7 via a line.
  • the control computer 12 starts the station search run 11 and stores the corresponding station data and the associated frequency in the station memory 13.
  • FIG. 2 shows a typical data telegram as it is generated, for example, on the basis of the information in the memory 8 based on the digital signals received by the RDS decoder 7. This information was output on the digital display 10 and at the same time generated by the speech synthesizer 9 as speech and output via the low-frequency amplifier 5 and the loudspeaker 6. If the RDS decoder 7 recognizes that it has received a new traffic message, it communicates this to the control computer 12 via the data line. The control computer 12 now switches the switch 4 so that the information prepared by the speech synthesizer according to FIG. 2 can be given to the driver via the loudspeaker 6.
  • the control computer 12 regularly queries the RDS decoder 7 whether new traffic information has arrived. If no new traffic information occurs, the computer is on hold or performs other calculation tasks in connection for the recipient. If new traffic information has arrived, the computer performs several functions. On the one hand, the control computer 12 causes the RDS decoder 7 to pass this message on to the speech synthesizer 9 and switches the switch 4 over so that the traffic message can be read out.
  • the station search in the tuning unit 11 is activated at point 22. At position 23, the position of the tuning unit 11 and thus the frequency received is detected when a transmitter is found.
  • the RDS decoder 7 receives the instruction to deliver the program identification code into the transmit memory 13.
  • the control computer 12 transmits the associated frequency to the transmit memory 13. This step is repeated until all received stations are stored in the station memory 13.
  • control computer 12 finally initiates a comparison of the frequencies and transmitters stored in transmitter memory 13 with the transmitter comparison table in memory 14. The associated region is now determined.
  • the control computer 12 then continues its program at point 25.
  • FIG. 4 shows an example of a section of a transmitter comparison table as it is stored in the memory 14.
  • a frequency in the FM range is assigned the code of the corresponding radio transmitter and the region in which this transmitter is arranged on this frequency.
  • the transmitter SWF3 can be received on the frequency 80.8 MHz, which is received mainly in region A, but can also be heard in part in region B. In this case region A is the most important region while region B is more secondary.
  • the transmitter NDR1 can also be received on the same frequency, but can be heard in region D, which is completely different from region A, and at the same time still radiates into region E. Because of the large spatial distance, the transmitter distribution ensures that a radio receiver can only hear the transmitter SWF3 or NDR1.
  • the evaluation is now carried out by comparing the received transmitters stored in the transmitter memory with the transmitters in the comparison table. If, for example, it was found during a transmitter run that SWF3 was received at frequency 80.8, SDR1 received at frequency 81.2 and BR1 at frequency 83.0, it can be assumed with great probability that the receiver is located in region A. , although at 83.0 the transmitter BR1 can preferably be received in region F and only secondarily in region A. This should be seen as an indication that the vehicle is moving in the direction of region F. On the other hand, however, overreaches or particularly good reception situations are also decisive for the fact that a station was listened to at 83.0.
  • the determination of the region is of course more precise the more frequently a station search is carried out.
  • a station search can be carried out particularly frequently when the radio receiver has a cassette player or CD player and the radio listener hears the cassette program or the program on the CD. In this case points the switch 4 to a further position, in which the AF amplifier 5 and the loudspeaker 6 are connected to the cassette player or the CD player. Now the channel search can be activated continuously and the reception conditions can be continuously checked. Otherwise, a check is always made when traffic reports are issued. Here too, however, a kind of self-regulating effect is formed, since the region determination becomes more precise the more frequently traffic reports have to be transmitted.
  • a station search can also be carried out if the driver of a vehicle actuates the tuning device because he wants to hear another station. This will be the case in particular in poor reception conditions, or if the advantages of the RDS system are used and the system searches for a new transmitter on its own, since the old transmitter can only be received poorly. Since this also indicates a geographical change of location, it is particularly advantageous to also store the other receivable stations in order to check whether a certain region has been left in the meantime. Finally, this process must also be carried out when a radio receiver is switched on in order to obtain any information about the region in which the receiver is located.
  • the memory 8 and the memory 14 do not have to be arranged separately, as shown in FIG. 1. Rather, it is possible to combine the memories 8 and 14 into a common memory, different address spaces containing different digital information, for which one information is provided for the RDS decoder and the other information for the comparison of the received stations.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)
EP92115777A 1991-10-31 1992-09-16 Récepteur de radiodiffusion, en particulier récepteur pour véhicules Expired - Lifetime EP0539708B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4135942A DE4135942A1 (de) 1991-10-31 1991-10-31 Rundfunkempfaenger, insbesondere fahrzeugempfaenger
DE4135942 1991-10-31

Publications (3)

Publication Number Publication Date
EP0539708A2 true EP0539708A2 (fr) 1993-05-05
EP0539708A3 EP0539708A3 (en) 1993-11-24
EP0539708B1 EP0539708B1 (fr) 1998-07-01

Family

ID=6443860

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92115777A Expired - Lifetime EP0539708B1 (fr) 1991-10-31 1992-09-16 Récepteur de radiodiffusion, en particulier récepteur pour véhicules

Country Status (3)

Country Link
EP (1) EP0539708B1 (fr)
DE (2) DE4135942A1 (fr)
ES (1) ES2118099T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0661522A1 (fr) * 1993-12-30 1995-07-05 Sony Corporation Système d'affichage d'information
WO1996017450A1 (fr) * 1994-11-29 1996-06-06 Robert Bosch Gmbh Procede permettant de regler un recepteur radio mobile sur des programmes radio diffusant des informations relatives a la circulation
WO1996019785A3 (fr) * 1994-12-20 1996-08-29 Philips Electronics Nv Procede de traitement et de reproduction de message et recepteur correspondant
EP0762679A1 (fr) * 1995-09-08 1997-03-12 Robert Bosch Gmbh Méthode et dispositif pour la détermination de la position géographique d'un récepteur de radiodiffusion

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10225185A1 (de) * 2002-06-06 2003-12-18 Werner M Bless Bereitstellen von streckenspezifischen Informationen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3835870C1 (fr) * 1988-10-21 1990-01-18 Blaupunkt-Werke Gmbh, 3200 Hildesheim, De
DE3914104A1 (de) * 1989-04-28 1990-11-15 Bosch Gmbh Robert Rundfunkempfaenger, insbesondere fahrzeugempfaenger
DE3926984A1 (de) * 1989-08-16 1991-02-21 Blaupunkt Werke Gmbh Autoradio-kassettenspieler-kombinationsgeraet
DE3936577A1 (de) * 1989-11-03 1991-05-08 Bosch Gmbh Robert Rundfunkempfaenger, insbesondere fahrzeugempfaenger

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0661522A1 (fr) * 1993-12-30 1995-07-05 Sony Corporation Système d'affichage d'information
WO1996017450A1 (fr) * 1994-11-29 1996-06-06 Robert Bosch Gmbh Procede permettant de regler un recepteur radio mobile sur des programmes radio diffusant des informations relatives a la circulation
WO1996019785A3 (fr) * 1994-12-20 1996-08-29 Philips Electronics Nv Procede de traitement et de reproduction de message et recepteur correspondant
EP0762679A1 (fr) * 1995-09-08 1997-03-12 Robert Bosch Gmbh Méthode et dispositif pour la détermination de la position géographique d'un récepteur de radiodiffusion

Also Published As

Publication number Publication date
ES2118099T3 (es) 1998-09-16
EP0539708A3 (en) 1993-11-24
DE59209389D1 (de) 1998-08-06
DE4135942A1 (de) 1993-05-06
EP0539708B1 (fr) 1998-07-01

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