EP0459360B1 - Récepteur radio avec RDS muni d'un dispositif pour la recherche de fréquences alternatives recevables en temps réel - Google Patents

Récepteur radio avec RDS muni d'un dispositif pour la recherche de fréquences alternatives recevables en temps réel Download PDF

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Publication number
EP0459360B1
EP0459360B1 EP91108609A EP91108609A EP0459360B1 EP 0459360 B1 EP0459360 B1 EP 0459360B1 EP 91108609 A EP91108609 A EP 91108609A EP 91108609 A EP91108609 A EP 91108609A EP 0459360 B1 EP0459360 B1 EP 0459360B1
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EP
European Patent Office
Prior art keywords
receiver
rds
memory
code
subsidiary
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91108609A
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German (de)
English (en)
Other versions
EP0459360A3 (en
EP0459360A2 (fr
Inventor
Arnold Prof. Dr. Grundig E.M.V. Glaab
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.)
Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
Original Assignee
Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
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Publication date
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Publication of EP0459360A2 publication Critical patent/EP0459360A2/fr
Publication of EP0459360A3 publication Critical patent/EP0459360A3/de
Application granted granted Critical
Publication of EP0459360B1 publication Critical patent/EP0459360B1/fr
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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
    • H04H20/20—Arrangements for broadcast or distribution of identical information via plural systems
    • H04H20/22—Arrangements for broadcast of identical information via plural broadcast systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/10—Arrangements for replacing or switching information during the broadcast or the distribution
    • H04H20/106—Receiver-side switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/26—Arrangements for switching distribution systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/55—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for traffic information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
    • H04H2201/13—Aspects of broadcast communication characterised by the type of broadcast system radio data system/radio broadcast data system [RDS/RBDS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/60—Aspects of broadcast communication characterised in that the receiver comprises more than one tuner
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H40/00—Arrangements specially adapted for receiving broadcast information
    • H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
    • H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
    • 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

Definitions

  • PI codes program identification codes
  • This RDS service is particularly useful for mobile radio receivers because changes in location can change the reception conditions constantly.
  • the receiving device In order to supply the radio receiver with the current program without an audible interruption, the receiving device must therefore be able to fall back on alternative frequencies that are already recognized as worth receiving if the reception conditions within an internal memory deteriorate.
  • the alternative frequencies transmitted by wave propagation with the RDS data are stored in a memory, but also an evaluation of the reception quality of the stored AFs is carried out at least with every change to an alternative frequency.
  • the quality assessment can only be carried out by briefly checking an alternative frequency, ie within a time window of approx. 20 ms including the necessary switchover times to the AF and returning to the currently received frequency to avoid an audible program interruption.
  • the particularly annoying multi-path reception disturbances can hardly be detected because they occur briefly, but have a follow-up time of 100 ms and longer.
  • the receiving device may be tuned to a usable but not the best quality AF. This condition may persist for a long time if the current tuning frequency has just not reached the thresholds for triggering an AF check.
  • the receiver can only access those AFs whose quality assessment is no longer up to date a priori, ie that u.
  • An AF may be set that was the best at the last quality check, but has deteriorated significantly in the meantime without falling below the minimum requirements for reception.
  • a complete check of all AFs that have been useful in the recent past is not possible due to the long interruption of the current program. The user must therefore occasionally accept a multiple AF change, during which the reception quality deteriorates audibly in the meantime.
  • the receiver can hold on to a tuning frequency for a very long time under good reception conditions, although an alternative frequency could now be received with better quality. Only when the quality threshold is undershot is the switchover to an AF and, in the process, generates u. An audible leap in quality (e.g. from slightly disturbed mono reception to good stereo reception).
  • the RDS receiver described in EP application 0 333 194 essentially contains one Data memory which is occupied by a second receiving part with the list of alternative frequencies transmitted via wave propagation in the RDS signal of the currently received program.
  • a selection device uses the second tuner to select the AF whose signal field strength exceeds a predetermined value and stores it in a selection memory.
  • a comparison device then decides whether the current reception frequency of the first reception section should be exchanged with one of these AFs.
  • the data memory contains the entire AF list of a program broadcast by a broadcaster and, on the other hand, in the case of an abrupt program change by pressing a program selection button, no AFs of the program can provide newly selected programs as long as the associated AF list has not been detected from the RDS signal transmitted via wave propagation.
  • a radio receiver in particular a car radio with a first receiving part, a second receiving part and a central control unit, is known.
  • the central control unit is connected to the tuner of the background receiver and a working memory and periodically tunes to the alternative frequencies stored in the working memory of the program currently received by the foreground receiver, evaluates the reception quality of the alternative frequencies in their ranking among themselves and in comparison to the currently received frequency and provides if an alternative frequency is more receivable, tune the foreground receiver to this frequency.
  • the object of the present invention was therefore to develop a two-receiver concept with a background receiver which can immediately offer a number of alternative frequencies which are worth receiving even in the case of a spontaneous program change.
  • the entire transmitter landscape tested for reception quality should also be saved, which corresponds to the radius of action of the mobile receiving device.
  • the alternative frequencies transmitted to the working memory when the program is called up spontaneously are to be periodically checked in terms of their reception quality and ranked in order to be able to switch to a reception-safe alternative frequency without loss of time even in the case of short-term, striking interferences.
  • the frequency changeover should only take place after prolonged interference in order to avoid a continuous frequency change.
  • the RF signal received via the antenna is fed to both the tuner 2 of the foreground receiver 1 and the tuner 17 of the background receiver 19 and converted into an intermediate frequency.
  • the low-frequency multiplex signal is available at the output of the IF amplifiers 3 and 18 for further processing.
  • the audio signals for the left and right stereo channels are obtained via the stereo decoder 4, which are fed to the power amplifier 5 and the loudspeakers.
  • both the foreground receiver 1 and the background receiver 19 each have a level detector 6 or 14 and a multi-path detector 7 or 15.
  • the level detectors receive a measurement variable from the IF amplifiers in accordance with the IF signal level to determine the signal field strength, which is processed in the microprocessor 9 acting as a central control unit.
  • the multipath detectors are fed with the demodulated multiplex signal and supply the microprocessor 9 with a control signal for recognizing multipath reception.
  • the analog / digital conversion of the control signals for the microprocessor 9 takes place either in the detectors 6 and 7 or 14 and 15 or in the microprocessor 9, provided that this is provided with corresponding converter inputs.
  • only the background receiver 19 contains one for evaluating the RDS data RDS decoder 16. A version in which the foreground receiver also has its own RDS decoder is also conceivable.
  • the demodulated multiplex signal is first subjected to 57 kHz bandpass filtering in the RDS decoder 16.
  • the quadrature-amplitude-modulated RDS signal is then demodulated and, after a further biphase and differential decoding, supplied to the microprocessor 9.
  • the microprocessor 9 supplies the tuning signals for the synthesizer tuners 2 and 17 and feeds the display 12, via which u.a.
  • the station names obtained from the PS code (Program Service Name Code) of the RDS signal are displayed alphanumerically.
  • control unit 13 which generates the corresponding commands for the microprocessor 9.
  • the operating program for the microprocessor 9 is stored in the ROM memory 8.
  • the EEPROM memory 10 serves as a non-volatile program memory and, assigned to the program selection buttons in the operating part 13, contains the PI code and the associated PS code for each stored program.
  • the current transmitter data are recorded in the three memory levels of the RAM 11a-c.
  • Memory level 11a represents the working memory and contains, in addition to the PI code and the tuning frequency for the transmitter currently received by the foreground receiver 1, the associated PS code and the alternative frequencies that can be received on site.
  • Memory level 11b forms the background memory, which is loaded via the background receiver 19 with the PI codes and the alternative frequencies of all programs currently or previously confirmed to be worth receiving.
  • the memory level 11c works as an additional memory in which all RDS-TP frequencies, ie all RDS frequencies with Traffic Program Identification (TP) are stored, which originate from the same broadcaster which broadcasts the program received by the foreground receiver 1.
  • TP Traffic Program Identification
  • the microprocessor 9 begins to tune the tuner 17 in the search run over the entire reception range from 87.5 to 108.0 MHz, whereby it checks via the level detector 14 and the multi-path detector 15 whether certain minimum values for the reception quality are met.
  • the microprocessor 9 uses the RDS demodulator 16 to determine whether the received frequency is an RDS transmission frequency with or without traffic information, and stores frequencies that are worth receiving, sorted according to PI codes and evaluated in order of priority according to their reception quality in the background memory 11b.
  • the microprocessor 9 then transmits the data of the transmitter with the highest field strength including the associated AFs automatically into the first memory level 11a of the RAM, which serves as a working memory, and delivers a transmitter-related tuning signal to the tuner 2 of the foreground receiver 1.
  • the microprocessor 9 periodically checks the reception quality of the AFs stored in the working memory 11a via the background receiver 19 and continuously updates their ranking. In between, at certain time intervals, the microprocessor 9 uses the background receiver 19 to repeat its automatic search over the entire reception frequency range and empirically extends the memory content of the background memory 11b in accordance with the changed reception conditions in the case of mobile radio reception, the evaluation of the reception quality in the order of the local conditions is adjusted in each case. As a result, the background memory 11b reflects the transmitter landscape in the action area of the mobile radio receiver over time.
  • the frequencies of the PI code that has not been transferred to the working memory 11a for a long time for tuning the foreground receiver 1 are automatically deleted.
  • Program data which should also be available spontaneously in the future, can be transferred to the program memory 10 by pressing a corresponding program selection key.
  • the microprocessor 9 only transfers the PI code and the PS code from the working memory 11a to the program memory 10.
  • the AFs which can currently be received are copied from the background memory 11b to the working memory 11a when the program is called up later spontaneously, and with the help of the PS code the station name can be displayed immediately without having to wait for the evaluation of the RDS data received via wave propagation.
  • the PS code subsequently obtained from the radio signal shows a difference the code stored in the program memory 10, e.g. B. because in the meantime the station name has been changed, the PS code assigned to a specific PI code is automatically corrected by the microprocessor 9 both in the working memory 11a and in the program memory 10.
  • the background receiver 19 can be activated for a short time after extended switch-off pauses when the audio mode is switched off, time-controlled by the microprocessor 9 which is fed in the standby mode.
  • the foreground receiver 1 can be tuned to a new frequency by pressing a corresponding program selection key, or a manual search can be carried out step by step using special up / down search keys. Since in the exemplary embodiment described, only the background receiver 19 has an RDS demodulator 16, the search must take place via the background receiver.
  • This frequency is transmitted from microprocessor 9 to work memory 11a for tuning foreground receiver 1 and thus for program presentation, the current AF list for the associated PI code in background memory 11b also being automatically copied into work memory 11a. If the associated PI code is also already stored in the program memory 10 together with the corresponding PS code, the PS code is also copied from there into the main memory 11a by the microprocessor 9 in order to be able to immediately display the station name in the display 12.
  • the memory content is then updated with regard to the reception quality in the manner described above.
  • the continuous checking of the reception quality in the background receiver 19 parallel to the reproduction of the currently received program in the foreground receiver 1 would initially also have a brief and minor one Changes in the reception conditions result in a frequent change of the foreground receiver 1 to an alternative frequency.
  • the switch to an alternative frequency is software-controlled in the device according to the invention such that, with a slightly better reception quality of an AF, a frequency change only after a longer exposure and with strong ones Differences in quality occur within a very short period of time.
  • the delay time for a frequency change is switched over in stages depending on the reception field strength and the size of the detection signal for multipath reception.
  • designs with a constant delay or exposure time without signal dependence are also obvious.
  • the foreground receiver 1 can be tuned to an RDS transmission frequency without traffic reports, while traffic reports on other transmission frequencies of the same broadcaster are monitored with the background receiver 19.
  • the invention is therefore based on the idea that the driver with the foreground receiver selects the program of a broadcaster within his current target area and that by monitoring a traffic program of the same broadcaster in the background receiver, he only receives traffic information that is relevant to his route.
  • the microprocessor 9 transmits all currently available traffic radio frequencies of the same broadcaster from the background memory 11b to the additional memory 11c. The frequencies in question are broken down using the PI code. As can be seen from FIG.
  • the PI code consists of four hexadecimal numbers of 4 bits each, the first HEX number (bits 1 to 4) representing the country code and the second HEX number (bits 5 to 8) representing the transmission area code, ie the second HEX number indicates whether the program is international, national, supraregional, regional or local.
  • the third and fourth HEX numbers (bits 9 to 16) form the program reference number and thus identify the respective programs of the various broadcasters in a country. In Germany, the third HEX number is the program area (e.g. Bavaria, Hesse etc.) and the fourth HEX number is the program code (e.g. 1st program, 2nd program etc.).
  • the microprocessor 9 uses the background receiver 19 to check whether the TP bit in the RDS data signal is set to 1, i.e. whether it is, by briefly tuning the tuner 17 is a traffic radio station, otherwise there is no frequency transfer.
  • the traffic radio frequencies stored in the additional memory 11c are periodically checked by the microprocessor 9 alternately with the frequencies stored in the working memory 11a for reception quality and sorted according to their ranking.
  • TA traffic announcement

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)

Claims (7)

  1. Récepteur radio d'un système de transmission de données radio RDS, notamment autoradio RDS, comportant une première partie de réception (récepteur de premier plan 1), une seconde partie de réception (récepteur d'arrière-plan 19) et une unité de commande centrale (9), et dans lequel l'unité de commande centrale (9) est reliée au syntoniseur (17) du récepteur d'arrière-plan (19) et à une mémoire de travail (11a) et se règle automatiquement sur les fréquences alternatives, mémorisées dans la mémoire de travail (11a), du programme actuellement reçu par le récepteur de premier plan (1), évalue la qualité de réception des fréquences alternatives dans leur succession réciproque et par rapport à la fréquence actuellement reçue et, dans le cas d'une aptitude accrue à la réception d'une fréquence alternative, règle le syntoniseur (2) du récepteur de premier plan (1) sur cette fréquence, caractérisé en ce que l'unité de commande (9) est reliée à une mémoire d'arrière-plan (11b) et règle, au bout d'intervalles de temps déterminés, dans le système de temps partagé, le syntoniseur (17) du récepteur d'arrière-plan (19) sur toutes les fréquences d'émission RDS ou RDS-TP pouvant être décodées et mémorise ces fréquences dans la mesure où elles satisfont à certaines exigences minimales du point de vue de la qualité de réception, d'une manière ordonnée en fonction d'un code d'identification de programme (code PI) et de la qualité de réception dans la mémoire d'arrière-plan (11b) et que l'unité de commande centrale (9) gère la mémoire d'arrière-plan (11b) de telle sorte que des fréquences, dont le code PI n'a pas été appelé pendant un assez long intervalle de temps pour le réglage du récepteur de premier plan (1), sont à nouveau effacées en premier lors de l'épuisement complet de la capacité de mémoire.
  2. Récepteur radio RDS suivant la revendication 1, caractérisé en ce que le contrôle de l'aptitude à la réception des fréquences alternatives dans la mémoire de travail (11a) et d'évaluation de la qualité de réception des fréquences RDS et RDS-TP mémorisées dans la mémoire d'arrière-plan (b), par le récepteur d'arrière-plan (19) s'effectuent aussi bien lorsque la reproduction audio est branchée que lorsqu'elle est débranchée.
  3. Récepteur radio RDS suivant la revendication 1 ou 2, caractérisé en ce que l'unité de commande centrale (9) accorde le syntoniseur (17) du récepteur d'arrière-plan (19) lors de la recherche d'émetteurs et transmet à la mémoire de travail (11a) la fréquence RDS ou RDS-TP, identifiée comme apte à la réception, lors d'un arrêt de la recherche, pour accorder le récepteur de premier plan (1).
  4. Récepteur radio RDS suivant l'une des revendications précédentes, caractérisé en ce que, lors du réglage d'accord du récepteur de premier plan (1) sur un autre programme, l'unité de commande centrale (9) transmet ladite liste actuelle de fréquences alternatives (liste AF), qui correspond au code PI associé, depuis la mémoire d'arrière-plan (11b) dans la mémoire de travail (11a), sous l'effet d'un appel spontané d'un nouveau code PI à partir de la mémoire de programme (10) à l'aide d'une touche de sélection de programme ou par transfert d'une nouvelle fréquence de réception à partir du récepteur d'arrière-plan (19), après une recherche d'émetteurs.
  5. Récepteur radio RDS suivant l'une des revendications précédentes, caractérisé en ce que respectivement seul le code PI et le code PS sont mémorisés dans la mémoire de programme (10) pour le programme associé aux touches de sélection de programme et que lors de la recherche d'émetteurs, l'unité de commande centrale (9) vérifie si pour la fréquence de réception trouvée par le récepteur d'arrière-plan (19), est déjà mémorisé dans la mémoire de programme (10), un code PS associé à son code PI et qui peut être transféré pour l'affichage immédiat du nom de l'émetteur dans la mémoire de travail (11a).
  6. Récepteur radio RDS suivant l'une des revendications précédentes, caractérisé en ce que l'unité de commande centrale (9) exécute le réglage d'accord du récepteur de premier plan (1) sur une fréquence alternative avec une qualité de réception légèrement améliorée, uniquement avec un retard et que le retard est commandé en fonction de la différence de qualité.
  7. Récepteur radio RDS suivant l'une des revendications précédentes, caractérisé en ce que dans le cas où le récepteur de premier plan (1) est réglé sur un émetteur RDS sans signalisations de trafic, l'unité de commande centrale (9) transmet des fréquences RDS-TP de la même station émettrice depuis la mémoire d'arrière-plan (11b) dans la mémoire additionnelle (11c), et évalue périodiquement la qualité de réception de ces fréquences, contrôle l'état du bit TA et règle le syntoniseur (2) du récepteur de premier plan (1) sur la fréquence TP fournissant la meilleure réception, tant que le bit TA est positionné égal à 1.
EP91108609A 1990-06-01 1991-05-27 Récepteur radio avec RDS muni d'un dispositif pour la recherche de fréquences alternatives recevables en temps réel Expired - Lifetime EP0459360B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4017756 1990-06-01
DE4017756A DE4017756A1 (de) 1990-06-01 1990-06-01 Rds-rundfunkempfaenger mit einer einrichtung zum aufsuchen aktuell empfangswuerdiger alternativer frequenzen

Publications (3)

Publication Number Publication Date
EP0459360A2 EP0459360A2 (fr) 1991-12-04
EP0459360A3 EP0459360A3 (en) 1992-04-08
EP0459360B1 true EP0459360B1 (fr) 1995-10-18

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EP91108609A Expired - Lifetime EP0459360B1 (fr) 1990-06-01 1991-05-27 Récepteur radio avec RDS muni d'un dispositif pour la recherche de fréquences alternatives recevables en temps réel

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EP (1) EP0459360B1 (fr)
DE (2) DE4017756A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1303065A2 (fr) * 2001-10-12 2003-04-16 Audi Ag Dispositif et procédé pour la mise à jour d'ensembles de données mémorisés, notamment de messages TMC

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59209341D1 (de) * 1991-02-01 1998-07-02 Blaupunkt Werke Gmbh Verfahren zur Überbrückung von Audiosignalunterbrechungen
DE4103062C2 (de) * 1991-02-01 1994-03-31 Blaupunkt Werke Gmbh Rundfunkempfänger
FR2699769A1 (fr) * 1992-12-21 1994-06-24 Electro Informatiques Eur Et Procédé pour optimiser le choix des fréquences dans une transmission radioélectrique à fréquences variables, et équipements pour sa mise en Óoeuvre.
US5812937B1 (en) * 1993-04-08 2000-09-19 Digital Dj Inc Broadcast data system with multiple-tuner receiver
DE4316685A1 (de) * 1993-05-16 1994-11-17 H U C Elektronik Gmbh Verfahren zur Ermittlung und Speicherung von empfangswürdigen Rundfunksendern in einem Empfangsteil
DE4316687A1 (de) * 1993-05-16 1994-11-17 H U C Elektronik Gmbh Verfahren und Schaltungsanordnung zum Rundfunkempfang
JPH0758598A (ja) * 1993-08-10 1995-03-03 Pioneer Electron Corp チャンネルプリセット機能を有するｒｄｓ受信機
DE19502359A1 (de) * 1995-01-26 1996-08-08 Becker Gmbh Rundfunkempfänger
DE19503540A1 (de) * 1995-02-03 1996-09-05 Bosch Gmbh Robert Verfahren zum Empfang und zur Ausgabe eines Rundfunkprogrammes mit zugefügten digitalen Informationen und Rundfunkempfängern dazu
DE19527183A1 (de) * 1995-07-26 1997-01-30 Philips Patentverwaltung RDS-TMC-Rundfunkempfänger
DE19531527C2 (de) * 1995-08-26 1999-09-02 Grundig Ag Verfahren und Schaltungsanordnung zum Programmwechsel bei kurzzeitigem Signalausfall
KR19980074982A (ko) * 1997-03-28 1998-11-05 배순훈 에프엠부가방송의 수신방법
DE19730218A1 (de) * 1997-07-15 1999-01-21 Bosch Gmbh Robert Rundfunkempfänger
DE19742494A1 (de) 1997-09-26 1999-04-01 Bosch Gmbh Robert Verfahren zur schnellen optimalen AF-Auswahl
DE19753715A1 (de) * 1997-12-04 1999-06-17 Grundig Ag Rundfunkempfänger mit Senderspeicheraktualisierung
DE19847018A1 (de) * 1998-10-13 2000-04-20 Bosch Gmbh Robert Verfahren zur Auswahl eines Rundfunkprogramms aus einem Hintergrundspeicher eines RDS-Rundfunkempfängers in logischer Folge
EP1032128A1 (fr) * 1999-02-23 2000-08-30 Mannesmann VDO Aktiengesellschaft Méthode de traitement de données de transmetteur et de programme dans un récepteur FM RDS
EP1056203A1 (fr) * 1999-05-26 2000-11-29 Mannesmann VDO Aktiengesellschaft Procédé de sélection d'une fréquence d'accord
DE10004002A1 (de) * 2000-01-29 2001-08-09 Bosch Gmbh Robert Verfahren zum Verdecken von Unterbrechnungen der Wiedergabe empfangener Rundfunksignale
DE10034039A1 (de) 2000-07-13 2002-01-31 Harman Becker Automotive Sys Runddfunkempfangssystem, Empfänger und Betriebsverfahren dafür
DE10133481A1 (de) * 2001-07-10 2003-01-30 Harman Becker Automotive Sys Funksignalempfänger
US7747232B2 (en) 2001-07-13 2010-06-29 Harman Becker Automotive Systems Gmbh Radio reception system with automatic tuning
DE10218697A1 (de) * 2002-04-26 2003-11-06 Bosch Gmbh Robert Mehrkanal-Funkempfänger
KR20080008636A (ko) * 2006-07-20 2008-01-24 삼성전자주식회사 고정채널을 제공하는 방송수신장치 및 그 방법
JP5999923B2 (ja) * 2012-02-27 2016-09-28 アルパイン株式会社 受信装置、放送局の表示方法および表示プログラム

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2946755C2 (de) * 1979-11-20 1984-08-09 Philips Patentverwaltung Gmbh, 2000 Hamburg Verfahren und Schaltungsanordnung für einen Rundfunkempfänger mit Sendersuchlauf
JPS6460115A (en) * 1987-08-31 1989-03-07 Fujitsu Ten Ltd Rds radio receiver
JP2760552B2 (ja) * 1988-03-17 1998-06-04 三洋電機株式会社 受信機

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1303065A2 (fr) * 2001-10-12 2003-04-16 Audi Ag Dispositif et procédé pour la mise à jour d'ensembles de données mémorisés, notamment de messages TMC
EP1303065A3 (fr) * 2001-10-12 2006-08-23 Audi Ag Dispositif et procédé pour la mise à jour d'ensembles de données mémorisés, notamment de messages TMC

Also Published As

Publication number Publication date
EP0459360A3 (en) 1992-04-08
DE4017756A1 (de) 1991-12-05
DE59106704D1 (de) 1995-11-23
EP0459360A2 (fr) 1991-12-04

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