WO2012003820A1 - The invention relates to a transfer method for additional rds data on fm using the free frequency ranges - Google Patents

The invention relates to a transfer method for additional rds data on fm using the free frequency ranges Download PDF

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Publication number
WO2012003820A1
WO2012003820A1 PCT/DE2011/001120 DE2011001120W WO2012003820A1 WO 2012003820 A1 WO2012003820 A1 WO 2012003820A1 DE 2011001120 W DE2011001120 W DE 2011001120W WO 2012003820 A1 WO2012003820 A1 WO 2012003820A1
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WO
WIPO (PCT)
Prior art keywords
rds
extended
khz
data stream
data
Prior art date
Application number
PCT/DE2011/001120
Other languages
German (de)
French (fr)
Inventor
Attila Ladanyi
Original Assignee
Attila Ladanyi
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 Attila Ladanyi filed Critical Attila Ladanyi
Publication of WO2012003820A1 publication Critical patent/WO2012003820A1/en

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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
    • H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
    • H04H20/33—Arrangements for simultaneous broadcast of plural pieces of information by plural channels
    • H04H20/34—Arrangements for simultaneous broadcast of plural pieces of information by plural channels using an out-of-band subcarrier signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/44—Arrangements characterised by circuits or components specially adapted for broadcast
    • H04H20/46—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95
    • H04H20/47—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95 specially adapted for stereophonic broadcast systems
    • H04H20/48—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95 specially adapted for stereophonic broadcast systems for FM stereophonic broadcast systems
    • 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 is a transmission method for additional RDS data on FM using the free frequency ranges.
  • RDS tuners are in all vehicles today, almost all smartphones. most mobile phones and in many other consumer devices. Every citizen in the developed countries, but mostly also in the developing countries, owns more than one radio in the household, which has been controlled by RDS for the last 20 years. It is the only actual world standard used in broadcasting technology.
  • the transmission should be fully compatible, without the need to redesign today's standard equipment and devices. This includes:
  • the decay is reversed and the frequency ranges are released from the multiplex and shifted to the original 57 kHz.
  • Demodulation of the RDS bitstream is done either parallell by multiple identical hardware or by DSP. Again, there is only a single carrier, namely 57 kHz, despite multiple data streams. Since the carrier is suppressed during transmission through the air interface, the demodulator will first attempt carrier recovery, and this must result in the 57 kHz standard carrier each time.
  • bitstreams can be processed in a time-division multiplexing process by a single decoder or you can pack the whole thing into a DSP that can mathematically perform the same functions.
  • DSP receivers exist in numerous SDR (Software Defined Radio) projects.
  • SDR Software Defined Radio
  • the invention relates to the method itself and not to the hardware parts or software solutions used.

Abstract

The invention relates to a transfer method of an extended radio data system (RDS), wherein on the transmitter side a plurality of individually modulated 57 kHz RDS carriers are shifted to free frequencies between 60 and 100 kHz in an FM frequency multiplex according to VHF and inserted and on a receiver side the modulated information is demodulated individually or in parallel and is output as an RDS data stream, wherein an original RDS data stream is retained individually or as part of a data multiplex and an error correction mechanism in the receiver, if available, allows the PI code for the extended carrier to be omitted and makes corrections in real-time using information from the original RDS data stream and thus achieves a higher user data capacity for the extended RDS sidebands.

Description

Beschreibung der Erfindung  Description of the invention
Bei der Erfindung handelt es sich um ein Übertragungsverfahren für zusätzliche RDS Daten auf FM unter Nutzung der freien Frequenzbereiche. The invention is a transmission method for additional RDS data on FM using the free frequency ranges.
Historie und Ziele:  History and goals:
RDS Tuner befinden sich heute in sämtlichen Fahrzeugen, fast alle Smartphones. die meisten Mobiltelefone und in vielen ganz anderweitig benutzten Konsumgeräten. Jeder Bürger in den entwickelten Ländern aber meist auch in den Entwicklungsländern besitzt im Haushalt mehr als ein Radio, welche seit 20 Jahren mehrheitlich RDS gesteuert sind. Es ist der einzige tatsächlich benutzte Weltstandard in der Rundfunktechnik.  RDS tuners are in all vehicles today, almost all smartphones. most mobile phones and in many other consumer devices. Every citizen in the developed countries, but mostly also in the developing countries, owns more than one radio in the household, which has been controlled by RDS for the last 20 years. It is the only actual world standard used in broadcasting technology.
Aufgrund des Verbreitungsgrads wird immer mehr versucht weitere Daten als ursprünglich vorgesehen mittels RDS zu den Empfängern zu liefern. Dazu müsste man jedoch bald die Übertragungskapazitäten erweitern.  Due to the degree of dissemination is increasingly more data than originally provided by RDS to the recipients to deliver. However, one would soon have to expand the transmission capacities.
Die Übertragung soll voll kompatibel erfolgen, ohne die heute üblichen Einrichtungen und Geräte neu konzipieren zu müssen. Dies beinhaltet:  The transmission should be fully compatible, without the need to redesign today's standard equipment and devices. This includes:
• Alle RDS-Daten sollen mit 57 kHz Modulation senderseitig zugeführt werden können. • All RDS data should be able to be fed with 57 kHz modulation on the transmitter side.
• Es sollen nach Bedarf bis zu den UKW-FM Grenzen Daten dynamisch dazugesendet werden. • Data should be sent dynamically as required up to the FM-FM limits.
• Alle RDS Daten sollen als einheitlichen Datenstrom vom Tuner erhältlich sein.  • All RDS data should be available as a unified data stream from the tuner.
• Die Originalfunktionalität von RDS darf nicht beeinträchtigt werden.  • The original functionality of RDS must not be affected.
Angesichts der Anzahl der RDS Empfänger weltweit von einigen Milliarden Stück und den jährlichen Zuwachs von etwa 500 Millionen Stück (Quelle RDS-Forum / Tom-Tom) kann man nicht einfach nach belieben die Methoden, Träger und Protokolle wechseln.  Given the number of RDS receivers worldwide of a few billion pieces and the annual increase of about 500 million pieces (source RDS Forum / Tom-Tom) you can not just change the methods, carriers and protocols as you like.
Dies alles schliesst ein übliches Mehrträgerverfahren wie in DAB, DRM, DVB, DARC aus, da dies zu mehrfacher Demodulation und Remodulation auf beiden Seiten der  All this excludes a common multicarrier method as in DAB, DRM, DVB, DARC, since this leads to multiple demodulation and remodulation on both sides of the
Datenübertragungsweg führen müsste. Dazu wären auch noch fixe Unterträger nötig und damit weder flexibel noch preiswert zu realisieren ist. Data transmission path would have to. This would also require fixed subcarriers and thus neither flexible nor inexpensive to realize.
Nach aktuellem Stand der Foschung, Lehre und Industrie existiert kein Verfahren der die oben genannte Funktionalität wie erwünscht ermöglichen würde. Deswegen wird seit 1984 die magere 1 187.5 bit/s Übertragungsgeschwindigkeit als notwendiges Übel hingenommen.  According to current research, teaching and industry, there is no method which would allow the above functionality as desired. Therefore, since 1984, the meager 1 187.5 bit / s transmission speed is accepted as a necessary evil.
Lösung des Problems: The solution of the problem:
Das neue System muss kompatibler und flexibler werden. Deswegen werden entgegen von Stand der Technik und Lehre folgende Neuerungen vorgesehen:  The new system needs to become more compatible and flexible. Therefore, contrary to the state of the art and teaching following changes are provided:
Es gibt keine fixen Unterträger die für sich moduliert werden, sondern nur der 57 kHz Standard Unterträger. Die Encoderausgabe mit dem 57 +/- 2,4 kHz Träger wird aus dem Frequenzbereich in der Standard RDS Breite von 4,8 kHz geschnitten und kann in den freien UKW-FM-MPX Frequenbereich auf andere Frequenzen verschoben werden. Dabei wird kein Träger generiert, kein Träger moduliert, rein gamichts. Normalerweise ist so ein Datenpaket auf dieser„neuen" (verschobenen bzw. hochgemischten) Frequenz nicht bzw. nicht ohne weiteres zu demodulieren, ganz im Gegensatz zu den klassischen Mehrträgerverfahren. Ein Frequenzbereich in dem Band zu verschieben ist natürlich eine bekannte Methode und Werkzeug, lediglich für diese Zwecke noch nie benutzt. There are no fixed subcarriers that are modulated for themselves, but only the 57 kHz standard subcarrier. The encoder output with the 57 +/- 2.4 kHz carrier is cut from the frequency range in the standard RDS width of 4.8 kHz and can be shifted to the free FM FM-MPX frequency range to other frequencies. No carrier is generated, no carrier modulated, purely gamichts. Normally such a data packet is not or not easily demodulated on this "new" (shifted or highly mixed) frequency, in contrast to the classical multicarrier method. Of course, moving a frequency range in the band is a well-known method and tool, never used for those purposes.
Um die Positionen der einzelnen modulierten Bereiche wiederzufinden werden RDS To find the positions of the individual modulated areas are RDS
Mechanismen benutzt, die eine Signalisierung mittels RDS Standards in dem Primärkanal (57 kHz) ermöglichen.. Für solche Zwecke ist normalerweise der Gruppe 3A (ODA) vorgesehen. (Stand 2010) Mechanisms are used which allow signaling by means of RDS standards in the primary channel (57 kHz). For such purposes, group 3A (ODA) is normally provided. (As of 2010)
In dem Empfangsgerät (Tuner) wird das Verfallen umgedreht und die Frequenzbereiche aus dem Multiplex gelöst und auf die Original 57 kHz verschoben. Eine Demodulierung des RDS Bitstroms erfolgt entweder parallell durch mehrfach identische Hardware oder mittels DSP. Auch hier gibt es nur einen einzigen Träger, nämlich 57 kHz, trotz mehrfacher Datenströme. Da der Träger während der Übertragung durch die Luftschnittstelle unterdrückt wird, versucht der Demodulator erst eine Träger-Rückgewinnung und das muss jedesmal den 57 kHz Standard Träger ergeben. In the receiver (tuner) the decay is reversed and the frequency ranges are released from the multiplex and shifted to the original 57 kHz. Demodulation of the RDS bitstream is done either parallell by multiple identical hardware or by DSP. Again, there is only a single carrier, namely 57 kHz, despite multiple data streams. Since the carrier is suppressed during transmission through the air interface, the demodulator will first attempt carrier recovery, and this must result in the 57 kHz standard carrier each time.
Vgl. http://www.datasheetcatalog.org/datasheet/SGSThomsonMicroelectronics/niXvtuv.pdf See http://www.datasheetcatalog.org/datasheet/SGSThomsonMicroelectronics/niXvtuv.pdf
Durch die Technologie muss lediglich der Demodulator mehrfach ausgelegt werden. Dies belegt nur minimale Chipfläche und kann nach Bedarf zu oder abgeschaltet werden. Die entstehenden Bitströme kann man im Zeitmultiplexverfahren durch einen einzigen Dekoder verarbeiten lassen oder man packt das Ganze in einen DSP der mathematisch die gleichen Funktionen ausführen kann.. Due to the technology only the demodulator has to be designed several times. This occupies only minimal chip area and can be switched on or off as required. The resulting bitstreams can be processed in a time-division multiplexing process by a single decoder or you can pack the whole thing into a DSP that can mathematically perform the same functions.
Beispiel für DSP Empfänger gibt es in zahlreichen SDR (Software Defined Radio) Projekten. In ein DSP kann man näherungsweise die gleichen Funktionen als Programme ausführen die oben in Form einzelner Chips oder Schaltungen beschrieben wurden. Die Erfindung bezieht sich selbstverständlich auf das Verfahren selber und nicht auf die verwendeten Hardwareteile oder Softwarelösungen. Examples of DSP receivers exist in numerous SDR (Software Defined Radio) projects. In a DSP, one can perform approximately the same functions as programs described above in terms of individual chips or circuits. Of course, the invention relates to the method itself and not to the hardware parts or software solutions used.
Es ist jedem unbenommen zum Bsp. über DARC , DAB, DVB oder Satellitenfunk ein RDS Datenstrom zu übertragen und in Endgeräte einzuspeisen. Das hat nur mit den Dateninhalten zu tun, aber nichts mit der hier vorgestellten Technologie des„Mehrf requenz- Ein träge r- Verfahrens".  It is up to anyone for example to transmit via DARC, DAB, DVB or satellite radio an RDS data stream and feed it into terminals. This has to do only with the data content, but nothing to do with the presented technology of the "multi-frequency-inertia-method".

Claims

Patentansprüche claims
Anspruch 1 : Claim 1:
Ein Übertragungsverfahren eines erweiterten Radio Daten Systems (RDS) ist dadurch gekennzeichnet, dass  A transmission method of an extended radio data system (RDS) is characterized in that
mehrere, einzeln modulierte 57 kHz RDS Träger senderseitig auf freie Frequenzen zwischen 60 bis 100 kHz in einem FM Frequenzmultiplex gemäß UKW verschoben und eingefügt werden,  several individually modulated 57 kHz RDS carriers are transposed and inserted on the transmitter side to free frequencies between 60 and 100 kHz in an FM frequency division according to VHF,
auf einer Empfängerseite die aufmodulierten Informationen einzeln oder parallel demoduliert und als ein RDS-Datenstrom ausgegeben werden,  on a receiver side, the modulated information is demodulated individually or in parallel and output as an RDS data stream,
wobei ein original RDS-Datenstrom einzeln oder als Teil eines Datenmultiplex erhalten bleibt und  wherein an original RDS data stream is maintained singly or as part of a data multiplex, and
ein Fehlerkorrektur-Mechanismus im Empfänger, sofern vorhanden, das Weglassen des Pl-Codes für die erweiterten Träger zulässt und in Echtzeit durch Informationen aus dem original RDS-Datenstrom korrigiert und dadurch eine höhere Nutzdaten- Kapazität für die erweiterten RDS Seitenbänder erreicht.  an error correcting mechanism in the receiver, if any, allows omission of the extended carrier Pl code and corrects in real time by information from the original RDS data stream, thereby achieving higher payload capacity for the extended RDS sidebands.
Anspruch 2: Claim 2:
Ein Übertragungsverf ah ren eines erweiterten Radio Daten Systems (RDS) nach Anspruch 1 ist dadurch gekennzeichnet, dass  A transmission method of an extended radio data system (RDS) according to claim 1 is characterized in that
die Anzahl und die Frequenzen der erweiterten RDS Träger zwischen 60 und 100 kHz in dem FM Frequenzmultiplex gemäß» UKW nach Bedarf generierbar sind.  the number and frequencies of the extended RDS carriers between 60 and 100 kHz can be generated as required in the FM frequency multiplex according to »VHF.
PCT/DE2011/001120 2010-05-27 2011-05-26 The invention relates to a transfer method for additional rds data on fm using the free frequency ranges WO2012003820A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010022011 DE102010022011B4 (en) 2010-05-27 2010-05-27 Extended data transfer to FM using the RDS protocol
DE102010022011.6 2010-05-27

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WO2012003820A1 true WO2012003820A1 (en) 2012-01-12

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Publication number Priority date Publication date Assignee Title
WO2016180432A1 (en) 2015-05-08 2016-11-17 Attila Ladanyi Increased data transfer for fm radio with modified usage of rds

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2146204A (en) * 1983-09-06 1985-04-11 Mcmartin Ind Inc FM subsidiary transmission method and system
US4660193A (en) * 1983-10-11 1987-04-21 Regency Electronics, Inc. Digital modulation method for standard broadcast FM subcarrier
US5581576A (en) * 1995-01-12 1996-12-03 International Business Machines Corp. Radio information broadcasting and receiving system
US6088577A (en) * 1999-01-13 2000-07-11 Clariti Telecommunications International, Ltd. Multiple subcarrier communication system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5649297A (en) * 1994-10-21 1997-07-15 Seiko Communications Holding N.V. Transmitting digital data using multiple subcarriers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2146204A (en) * 1983-09-06 1985-04-11 Mcmartin Ind Inc FM subsidiary transmission method and system
US4660193A (en) * 1983-10-11 1987-04-21 Regency Electronics, Inc. Digital modulation method for standard broadcast FM subcarrier
US5581576A (en) * 1995-01-12 1996-12-03 International Business Machines Corp. Radio information broadcasting and receiving system
US6088577A (en) * 1999-01-13 2000-07-11 Clariti Telecommunications International, Ltd. Multiple subcarrier communication system

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DE102010022011A1 (en) 2011-12-01

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