EP0364749B1 - Récepteur radio - Google Patents
Récepteur radio Download PDFInfo
- Publication number
- EP0364749B1 EP0364749B1 EP89117351A EP89117351A EP0364749B1 EP 0364749 B1 EP0364749 B1 EP 0364749B1 EP 89117351 A EP89117351 A EP 89117351A EP 89117351 A EP89117351 A EP 89117351A EP 0364749 B1 EP0364749 B1 EP 0364749B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stage
- memory
- output
- microprocessor
- input
- 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.)
- Revoked
Links
Images
Classifications
-
- 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
-
- 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 subject of property rights belongs to the area of radio receivers with a radio data signal decoder, or RDS decoder for short. This area includes car radios with RDS decoders.
- the broadcasts of each broadcaster are transmitted over several carrier frequencies.
- the transmitter locations for this are distributed over the transmission area of the broadcaster so that the weak reception zones of one carrier frequency are overlaid by strong reception zones of other carrier frequencies.
- the entirety of these transmitter locations forms a program chain, and all carrier frequencies together result in the list of alternative frequencies, referred to briefly in the professional world as the AF list. These alternative frequencies therefore always transmit the same program.
- the AF list belonging to the set carrier frequency has been transmitted for some time via the radio data signal.
- This AF list is at the exit of the RDS decoder removable and is stored in a suitable memory, which is managed by a microprocessor.
- the AF list for switching the radio receiver is available in the device if the field strength of the set carrier frequency is too low for interference-free reception.
- a special form of transmission of the AF lists is described by Mielke in DE-OS 34 48 043.
- the microprocessor controls the switchover of the car radio to the reception of one of the alternative frequencies stored in the memory. Frequently, this switchover first looks for the frequency that can be received with the greatest field strength.
- the digital signals that can be taken off at the output of the RDS decoder are even more sensitive to interference than the analog signals with which the programs are transmitted to the carrier frequencies. Since there is basically the task of not storing any faulty digital signals in the memory, sometimes none or only after a long time some of the transmitted alternative frequencies get into the memory, even when a program is still worth listening to.
- the object of the invention was to avoid these disadvantages and to achieve safe and rapid storage of at least a partial list of alternative frequencies.
- the radio receiver shown in FIG. 1 as a block diagram is connected via an antenna 1 to the electromagnetic alternating field surrounding it.
- the radio receiver has an input stage 2, which comprises a tunable mixing oscillator 3.
- the mixing oscillator receives a corresponding control signal from a tuning unit 4.
- This tuning unit includes a long-term memory 5, in which u. a. alternative frequencies are stored for a longer period.
- the tuning unit 4 comprises a station search stage 6, in which a search can be started either by reducing the field strength, which triggers a search for the next stored alternative frequency, or by hand using a switch 7.
- the intermediate frequency to which the modulation of the carrier frequency has been converted can be removed at the output of the input stage 2. This intermediate frequency is fed to the intermediate frequency stage 8.
- the low-frequency modulation of the transmitter, the MPX signal is available at its output for further processing.
- the 57 kHz subcarrier, which is modulated with the radio data signal, is filtered out of the MPX signal with the filter 10 and fed to the RDS decoder 11.
- the actual useful signal is amplified in the NF stage 12 and reproduced via the loudspeaker 13.
- a measuring stage 9 for the field strength of the set carrier frequency is also connected to the intermediate frequency stage 8. Its output is connected to station search stage 6. If the field strength of the set carrier frequency falls below a predefined threshold value, the next stored alternative frequency is searched for by the station search.
- this information also includes the information about the program chain to which the set carrier frequency is assigned, the PI code (program identification).
- the removal of the respectively desired data from the data stream which leaves the RDS decoder is controlled by a microprocessor 14. This microprocessor opens the individual circuits in the block diagram according to FIG. 1 at the time period provided in the microprocessor operating program, for which predetermined modules are then connected to one another for the exchange of data.
- Gate outputs 15, -15 N are connected downstream of the output of the RDS decoder.
- the gate circuit 15 is connected to an input stage 16 of the long-term memory 5, which comprises a group of memory locations 17, which are provided for storing PI codes.
- the PI code of the set transmitter is stored in a free memory location. This PI code is contained in the received radio data signal several times more often than the AF lists according to Mielke's proposed transmission.
- the detection of the PI code is therefore considerably more reliable, even if the reception of the digital data should already be disturbed.
- a comparison stage 18 which checks whether the received PI code has already been stored in the memory. In this case, the PI code is not saved again.
- Another input stage 20 of the long-term memory 5 is connected to the output of the tuning unit 4 via a gate circuit 19. Via this gate circuit 19, the control signal which sets the car radio to the received carrier frequency is converted into a data word which corresponds to the data word for this frequency in the list of alternative frequencies.
- Several chains 21 of AF memory locations are connected to the input stage 20. Each chain 21 is assigned to a storage location 17.
- the operating program of the microprocessor 14 ensures that in the long-term memory 5 the memory chain, which is assigned to the PI code transmitted by the transmitter, is called up to record the data word offered by the gate circuit 19; ie the control signal for the carrier frequency taken from the tuning system is stored in the called up memory chain.
- the long-term memory 5 is not deleted by the normal operating program of the microprocessor.
- the circuit described so far is the basis for the following method.
- a programming station search is started via switch 7.
- every RDS station received is automatically searched for and remains set for a certain period of time during which the station broadcasts its PI code several times.
- This PI code is written into one of the free memory locations 17.
- the output signal of the gate circuit 19 is also written into the memory chain 21 assigned to the PI code memory location.
- the frequency information stored in the memory chains is available in a known manner to the transmitter search stage 6 during a search run triggered by the field strength measuring device 9 via the output stage 22 of the long-term memory.
- the number of alternative frequencies that can be received at the vehicle location may well be smaller than the actually existing alternative frequencies in the program chain, especially in mountainous areas.
- a second exemplary embodiment of the invention contains a development of the previously described circuit for filling in the missing alternative frequencies, which is explained with reference to FIG. 2. With this development, the list of alternative frequencies recorded at the vehicle location can be supplemented by the other alternative frequencies contained in the RDS signal.
- the gate 151 at the output of the RDS decoder is assigned to the output of the data which contains the list of alternative frequencies. These data are stored in the free memory locations of the called chain 21 via the input stage 24 controlled by the microprocessor 14. This input stage 24 is followed by a changeover switch 25, to the second input of which the input stage 20 is connected.
- the switch 25 comprises a comparison stage 26 which compares the alternative frequencies already stored with the alternative frequencies transmitted by the RDS signal and avoids the allocation of memory cells in the chain with the same frequency information.
- the comparison stage 26 also provides a statement as to whether, in addition to the carrier frequency that has been set, other alternative frequencies are also read in the chain 21 that is called up, that is to say whether alternative frequencies are available in the long-term memory 5. If this is not the case, a station search is started, which searches for a station with the same PI code. For this purpose, the PI code is entered into the station search stage 6 instead of an alternative frequency via the output stage 23 assigned to the PI memory locations via a switch 27. The output stage 22 for the storage chains 21 is connected to the second input of the switch 27. This circuit is the basis for the following procedure.
- the output stage 22 assigned to the memory chains 21 does not provide a signal because the comparison stage 26 can only determine the correspondence between the readable alternative frequencies and the setting of the receiver, then the output signal of the output stage 23 assigned to the PI memory locations is switched through to the transmitter search stage 6 via the switch 27 .
- the receiver now looks for the next transmitter whose PI code matches the PI code of the previously received transmitter. The correspondence is checked in the comparison stage 18 which, in the event of a match, outputs a stop signal to the station search stage 6.
- the programming search mentioned can also be switched on continuously during the playing time of a cassette.
- the switchover of the low-frequency stage 12 to the switching stage 30 which effects cassette reproduction is connected via a switch 28 to the station search stage 6, to the second input of which the switch 7 is connected.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Circuits Of Receivers In General (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Claims (4)
- Récepteur radio avec un détecteur de signal de données radio, avec un microprocesseur et une mémoire pour des fréquences alternatives qui est relié du côté de la sortie à une entrée de l'étage d'accord du récepteur radio par l'intermédiaire de circuits de porte commandés par le microprocesseur, caractérisé en ce que la mémoire (15) comprend plusieurs chaînes de stockage (21) pour des listes de fréquences alternatives, en ce qu'à chaque chaîne de stockage correspond un emplacement de stockage (17) pour le code PI (information programme), qui est commun aux fréquences alternatives listées dans la chaîne de stockage correspondante (21), en ce que l'étage d'entrée (16) pour les emplacements de stockage (17) est relié par l'intermédiaire d'un circuit de porte (15) commandé par le microprocesseur (14) à la sortie du décodeur RDS (11), les étages d'entrée (20) pour les chaînes de stockage (21) sont par contre reliés par l'intermédiaire d'un circuit de porte (19) commandé par le microprocesseur à la sortie de l'étage d'accord (4), tandis que le microprocesseur (14) est programmé lors d'une marche de détection de telle façon qu'est déposé un code PI reçu dans l'emplacement de stockage (17) et en même temps les données qui correspondent à la fréquence momentanément réglée à la sortie du circuit de porte (19) sont mises en mémoire dans la chaîne de stockage (21) qui correspond à cet emplacement de stockage (17).
- Récepteur radio selon la revendication 1, caractérisé en ce qu'en aval de l'étage d'entrée (20) pour les chaînes de stockage (21) est monté un commutateur (25), dont la deuxième entrée est reliée par l'intermédiaire d'un circuit de porte (151) commandé par le microprocesseur à la sortie du décodeur RDS pour les listes AF.
- Récepteur radio selon la revendication 1 ou 2, caractérisé en ce que l'étage de sortie (23) pour les emplacements de stockage (17) est relié à une entrée de commande de l'étage d'accord (4) par l'intermédiaire d'un commutateur (27), étage d'accord qui déclenche lors de la connexion de l'étage de sortie (23) une marche de détection d'un émetteur avec le code PI délivré.
- Récepteur radio selon la revendication 1, 2 ou 3, caractérisé en ce que l'on raccorde un lecteur de cassette (29) avec un étage de branchement (30) par l'intermédiaire d'un commutateur (31) à un étage NF (12) et que l'on relie la sortie de l'étage de branchement au moyen d'un commutateur (28) commandé par le microprocesseur à une entrée de commande de l'étage d'accord (4), qui lors de la connexion de l'étage de branchement déclenche une mise en marche programmée de l'étage de détection des émetteurs (6) sur tout le spectre des émetteurs.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3835870 | 1988-10-21 | ||
DE3835870A DE3835870C1 (fr) | 1988-10-21 | 1988-10-21 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0364749A2 EP0364749A2 (fr) | 1990-04-25 |
EP0364749A3 EP0364749A3 (fr) | 1991-09-04 |
EP0364749B1 true EP0364749B1 (fr) | 1995-01-11 |
Family
ID=6365613
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89117351A Revoked EP0364749B1 (fr) | 1988-10-21 | 1989-09-20 | Récepteur radio |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0364749B1 (fr) |
JP (1) | JPH02165715A (fr) |
AT (1) | ATE117144T1 (fr) |
DE (2) | DE3835870C1 (fr) |
ES (1) | ES2068864T3 (fr) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4005413C2 (de) * | 1990-02-21 | 1993-12-16 | Grundig Emv | RDS-Rundfunkempfänger mit einer Einrichtung zum beschleunigten Auffinden alternativer Frequenzen |
DE4024366C2 (de) * | 1990-08-01 | 1993-12-09 | Blaupunkt Werke Gmbh | Autoradio mit einem Radiodatensignaldecoder |
DE4038597A1 (de) * | 1990-12-04 | 1992-06-11 | Grundig Emv | Rds-rundfunkempfaenger mit erweiterter speicherkapazitaet zur erfassung alternativer frequenzen |
DE4103062C2 (de) * | 1991-02-01 | 1994-03-31 | Blaupunkt Werke Gmbh | Rundfunkempfänger |
DE4103779C2 (de) * | 1991-02-08 | 1995-02-16 | Blaupunkt Werke Gmbh | RDS-Rundfunkempfänger |
DE4135942A1 (de) * | 1991-10-31 | 1993-05-06 | Robert Bosch Gmbh, 7000 Stuttgart, De | Rundfunkempfaenger, insbesondere fahrzeugempfaenger |
DE4137000C2 (de) * | 1991-11-11 | 1994-06-09 | Opel Adam Ag | Verfahren zur feldstärkeabhängigen Auswertung von Rundfunkinformationen für Fahrzeuge |
DE4206475C1 (fr) * | 1992-03-02 | 1993-07-08 | Blaupunkt-Werke Gmbh, 3200 Hildesheim, De | |
JPH05344015A (ja) * | 1992-06-09 | 1993-12-24 | Pioneer Electron Corp | Rds受信機を含むオーディオ装置 |
DE19622432C2 (de) * | 1996-06-04 | 1999-05-12 | Rundfunkschutzrechte Ev | Funkempfänger mit einem Stationsspeicher |
DE19746960B4 (de) * | 1997-10-24 | 2006-06-29 | Robert Bosch Gmbh | Verfahren zur Speicherung von Daten von Rundfunksendefrequenzen in einem Datenspeicher eines Rundfunkempfängers |
DE19936114A1 (de) * | 1999-07-31 | 2001-02-01 | Bosch Gmbh Robert | Verfahren und Anordnung zur Selektion von mit mindestens einem mobilen Empfänger empfangbaren Verkehrsinformationsdiensten |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3448043A1 (de) * | 1984-09-07 | 1986-06-05 | Institut für Rundfunktechnik GmbH, 8000 München | Verfahren zum abstimmen eines mobilen rundfunkempfaengers |
DE3432848C2 (de) * | 1984-09-07 | 1986-09-11 | Institut Fuer Rundfunktechnik Gmbh, 8000 Muenchen | Verfahren zum Übertragen einer digitalen Information |
JP2571247B2 (ja) * | 1988-01-07 | 1997-01-16 | パイオニア株式会社 | ラジオデータ受信機における受信周波数選択方法 |
-
1988
- 1988-10-21 DE DE3835870A patent/DE3835870C1/de not_active Expired - Lifetime
-
1989
- 1989-09-20 AT AT89117351T patent/ATE117144T1/de not_active IP Right Cessation
- 1989-09-20 DE DE58908878T patent/DE58908878D1/de not_active Revoked
- 1989-09-20 EP EP89117351A patent/EP0364749B1/fr not_active Revoked
- 1989-09-20 ES ES89117351T patent/ES2068864T3/es not_active Expired - Lifetime
- 1989-10-20 JP JP1271920A patent/JPH02165715A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
EP0364749A2 (fr) | 1990-04-25 |
JPH02165715A (ja) | 1990-06-26 |
DE58908878D1 (de) | 1995-02-23 |
ES2068864T3 (es) | 1995-05-01 |
EP0364749A3 (fr) | 1991-09-04 |
ATE117144T1 (de) | 1995-01-15 |
DE3835870C1 (fr) | 1990-01-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0497116B1 (fr) | Récepteur de radiodiffusion avec RDS | |
DE69114238T2 (de) | Verfahren zur Auswahl der Empfangsfrequenz für einen RDS-Empfänger. | |
EP0364749B1 (fr) | Récepteur radio | |
DE4024366C2 (de) | Autoradio mit einem Radiodatensignaldecoder | |
DE2850733C2 (de) | Rundfunkempfänger, insbesondere UKW- Empfänger, mit einer Einrichtung zur Programm-Direktwahl | |
EP0415132B1 (fr) | Récepteur de radiodiffusion avec RDS muni d'un dispositif de commutation automatique sur un programme régional alternatif | |
DE3942339C2 (fr) | ||
DE3104845A1 (de) | "rundfunkempfaenger mit einer durch ein digitales datenwort steuerbaren abstimmeinheit und verfahren zum steuern desselben | |
DE69020192T2 (de) | Verfahren zum Verarbeiten eines Rundfunkdatensignals, sowie Empfänger zum Durchführen dieses Verfahrens. | |
EP0314995B1 (fr) | Récepteur pour système RDS | |
EP0902564B1 (fr) | Méthode d'évaluation des signaux numériques, en particulier des signaux de données radio | |
DE69120331T2 (de) | Verfahren zum Wählen einer Frequenz für einen RDS-Empfänger | |
DE3825886C2 (de) | Radiodatensystem-Rundfunkempfänger | |
DE19753715A1 (de) | Rundfunkempfänger mit Senderspeicheraktualisierung | |
DE4005413C2 (de) | RDS-Rundfunkempfänger mit einer Einrichtung zum beschleunigten Auffinden alternativer Frequenzen | |
DE69010721T2 (de) | Verfahren zum Verarbeiten eines Rundfunkdatensignals, sowie Empfänger zum Durchführen dieses Verfahrens. | |
EP0381937B1 (fr) | Système de reproduction de messages d'avertissement | |
DE19701042C2 (de) | Verfahren zur Auswertung von digitalen Signalen | |
DE3934282C2 (de) | RDS-Empfänger | |
EP0853846B1 (fr) | Recepteur radio avec memoire pour frequences d'emission et codes affectes a ces frequences | |
DE3208360A1 (de) | Empfangsgeraet der unterhaltungselektronik mit einem hf-empfangsteil und einer abstimmanordnung | |
DE3844975C2 (de) | Verfahren zum Auswählen einer Empfangsfrequenz eines RDS-Empfängers | |
DE3626295C2 (fr) | ||
DE3145961C2 (fr) | ||
DE3050980C2 (fr) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT CH DE ES FR GB IT LI SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT CH DE ES FR GB IT LI SE |
|
17P | Request for examination filed |
Effective date: 19920217 |
|
17Q | First examination report despatched |
Effective date: 19931214 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT CH DE ES FR GB IT LI SE |
|
REF | Corresponds to: |
Ref document number: 117144 Country of ref document: AT Date of ref document: 19950115 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 58908878 Country of ref document: DE Date of ref document: 19950223 |
|
ITF | It: translation for a ep patent filed |
Owner name: STUDIO JAUMANN |
|
ET | Fr: translation filed | ||
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19950317 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2068864 Country of ref document: ES Kind code of ref document: T3 |
|
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
26 | Opposition filed |
Opponent name: PIONEER ELECTRONIC CORPORATION Effective date: 19951011 |
|
PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
PLBQ | Unpublished change to opponent data |
Free format text: ORIGINAL CODE: EPIDOS OPPO |
|
PLAB | Opposition data, opponent's data or that of the opponent's representative modified |
Free format text: ORIGINAL CODE: 0009299OPPO |
|
R26 | Opposition filed (corrected) |
Opponent name: PIONEER ELECTRONIC CORPORATION Effective date: 19951011 |
|
RDAH | Patent revoked |
Free format text: ORIGINAL CODE: EPIDOS REVO |
|
APAC | Appeal dossier modified |
Free format text: ORIGINAL CODE: EPIDOS NOAPO |
|
APAE | Appeal reference modified |
Free format text: ORIGINAL CODE: EPIDOS REFNO |
|
APAC | Appeal dossier modified |
Free format text: ORIGINAL CODE: EPIDOS NOAPO |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19990907 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19990923 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19990924 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19990927 Year of fee payment: 11 Ref country code: CH Payment date: 19990927 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 19990928 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19991124 Year of fee payment: 11 |
|
APAC | Appeal dossier modified |
Free format text: ORIGINAL CODE: EPIDOS NOAPO |
|
RDAG | Patent revoked |
Free format text: ORIGINAL CODE: 0009271 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: PATENT REVOKED |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
27W | Patent revoked |
Effective date: 19991111 |
|
GBPR | Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state |
Free format text: 991111 |
|
APAH | Appeal reference modified |
Free format text: ORIGINAL CODE: EPIDOSCREFNO |