EP2034641A2 - Procédé et dispositif de représentation d'informations RDS pouvant être affichées - Google Patents

Procédé et dispositif de représentation d'informations RDS pouvant être affichées Download PDF

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Publication number
EP2034641A2
EP2034641A2 EP08105259A EP08105259A EP2034641A2 EP 2034641 A2 EP2034641 A2 EP 2034641A2 EP 08105259 A EP08105259 A EP 08105259A EP 08105259 A EP08105259 A EP 08105259A EP 2034641 A2 EP2034641 A2 EP 2034641A2
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EP
European Patent Office
Prior art keywords
string
cache
rds
concatenation information
information
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.)
Withdrawn
Application number
EP08105259A
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German (de)
English (en)
Other versions
EP2034641A3 (fr
Inventor
Frank Schlenker
Karl-Heinz Knobl
Bernd Weymann
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.)
Aumovio Germany GmbH
Original Assignee
Continental Automotive Technologies 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 Continental Automotive Technologies GmbH filed Critical Continental Automotive Technologies GmbH
Publication of EP2034641A2 publication Critical patent/EP2034641A2/fr
Publication of EP2034641A3 publication Critical patent/EP2034641A3/fr
Withdrawn legal-status Critical Current

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    • 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
    • H04H60/68—Systems specially adapted for using specific information, e.g. geographical or meteorological information
    • H04H60/73—Systems specially adapted for using specific information, e.g. geographical or meteorological information using meta-information
    • H04H60/74—Systems specially adapted for using specific information, e.g. geographical or meteorological information using meta-information using programme related information, e.g. title, composer or interpreter

Definitions

  • the invention relates to a method and a device for displaying digital character strings, which are transmitted via the RDS PS service, on a terminal, in particular with a radio receiver.
  • the Radio Data System is standardized in DIN EN 62106. (see also http://de.wikipedia.org/wiki/Radio_Data_System) RDS recognition is mainly used in car radios, since it is possible by the transmission of alternative frequencies (alternative frequencies), without user intervention automatically change the frequency and thus one once set program to follow. This avoids the manual search for the new frequency when the vehicle leaves the transmission range of a transmitter while driving.
  • the RDS signal must be generated specifically for each transmitter location, usually directly at the transmitter.
  • RDS offers additional options for additional information / services, which are only occasionally used by the broadcasters and only partially supported by many devices.
  • PS Program Service Name
  • Programs Type refers to the classification of stations by divisions, z. Pop music, news, classical music, jazz. PTY selection is one of the standard features of common RDS receivers.
  • PTY-31 provides an automatic switchover solution for emergency and disaster reporting.
  • a traffic program signal (TP) is sent when a station offers the so-called traffic service, i. H. when information about traffic jams and dangers or ghosting messages are announced by a special signal. If TP is activated, causes a Traffic Announcement (German: traffic announcement, abbreviated TA) for the time of the announcement, for example, an increase in the volume (depending on the device) or the change of playback from CD to the radio and then back again.
  • TA Traffic Announcement
  • EON Enhanced Other Networks
  • EON is also theoretically suitable for other types of programs (PTY) z.
  • B. Switch messages to a connected station when there begins a program with the PTY concerned. This function is not used by the stations.
  • EON is supported, there is usually an EON icon on the front panel.
  • the Traffic Message Channel contains coded traffic announcements that can be viewed by a navigation system and used directly for route planning. In foreign-language foreign countries, the recipient can generate reports in their own language.
  • the Alternative Frequency (AF) feature allows you to automatically change the reception frequency when leaving the reception area of a broadcast station.
  • the AF table in the RDS are constantly alternative frequencies of surrounding stations broadcast, which also transmit the program set.
  • the receiver should constantly check the quality of the received signal and, if necessary, change to another frequency specified in the AF table. The change is successful only if the PI code matches as well. This avoids that a radio changes to a frequency that is occupied by another program at this point.
  • the program identification code (PI) is a station-internal identification code, which is used among other things in the search for AFs. It consists of a four-digit hexadecimal number, which allows a globally unique identification of the transmitter.
  • Radio Text transmits additional information, such as the current music track and artist or contact information of the station.
  • the text is transmitted line by line, a line contains a maximum of 64 characters.
  • the clock-time signal is used for time synchronization.
  • CT clock-time signal
  • Open Data Applications was introduced to make the RDS system easily extensible, allowing it to quickly implement additional data services without having to explicitly adapt the standard.
  • the data bits are transmitted at a data rate of 1,187.5 bits per second.
  • a modulation method a digital double-sideband method is used, wherein the carrier used is the rotated by 90 ° ARI pilot tone of 57 kHz. Due to the 90 ° phase rotation, the ARI signal and the RDS signal are to be received independently of each other, since these two signals are orthogonal to each other. In addition, the carrier is suppressed. Carrier and transmission rate are related: carrier frequency (57 kHz) / 48. The condition for independent reception is coherent demodulation. The necessary phase information is derived from the phase of the stereo pilot tone with 19 kHz (1/3 of the RDS carrier frequency) in the receiver.
  • each 26 bits form a block, which in turn consists of 16 data bits and 10 check bits.
  • a linear code is used, which has a minimum Hamming distance of 5, d. h., 2 random errors can be corrected within one block.
  • the code is designed to correct up to 11 further errors if it is considered a burst fault, i. H. directly next to each other.
  • the check bits can also be used to detect the block boundaries and the type of block.
  • Four blocks each (ABCD or ABC'D) form an RDS group.
  • Block A the 16-bit transmitter ID (program information PI) is always transmitted.
  • Block B contains the program type (PTY), an indicator for traffic information (TP) and the RDS group number (Group Type GT). This provides information on the use of the remaining five bits of block B and the 32 bits of blocks C and D. There are a number of RDS groups that are used for various additional data services.
  • the Radio Data System includes several services.
  • the Program Service Name is provided for transmitting the station name. As already discussed, this is limited to 8 characters. However, titles and artist names are transmitted in everyday use in almost all popular car radios. The problem is that this information does not fit in 8 characters, which breaks the information together.
  • Object of the present invention is to provide a simplified representation of longer information about the PS service.
  • a concatenation is defined, which can either be fixed, such.
  • the device When updating the PS, the device according to the invention now checks whether a concatenation mark has been transmitted at the end. If this is the case, it is deleted, the transmitted data is stored and, if necessary, already displayed, and the following information is immediately assembled with the preceding one, in order then to display it completely. Thus, arbitrarily long terms can be assembled in the memory / cache and then displayed. Of course, it is also conceivable that the concatenation mark is inserted at the beginning of the transmitted character string. In this case, the transmitted information is assembled with the previous ones.
  • a certain number of concatenated information is kept in a cache. If new 8 characters are added via PS, they will check if they are part of the cached information. If so, the enriched information from the cache is immediately displayed. Otherwise a new information will be created.
  • Bruce Springsteen Born in the USA New PS Bruce -> show cache: Bruce Springsteen Born in the USA New PS: jumping Summarize: Bruce Spring show cache: Bruce Springsteen Born in the USA
  • This approach ensures that a constant change of information is avoided.
  • the display will not change that often. Instead of 6 different ads, only one ad will be shown. This allows the user to see the title information at a glance without having to keep checking for updates on the display. The user can thus grasp the information at a glance without being distracted by traffic.
  • the FIG. 1 shows the procedure of the procedure.
  • the data to be displayed is received. Now it is checked whether in the meantime a channel change (eg by the user) was present. If so, the cache is cleared and the new data is written to the cache. After that they are displayed.
  • each channel may have its own cache area or that the memory be chosen large enough to provide a storage area for a plurality of channels before a cache area is cleared.
  • known algorithms for garbage collection can be used. In the present embodiment ( Fig. 1 ) is based only on a cache area, which is deleted. If several cache areas were available, a new cache area would be requested at the described step.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)
  • Information Transfer Between Computers (AREA)
EP08105259A 2007-09-10 2008-09-08 Procédé et dispositif de représentation d'informations RDS pouvant être affichées Withdrawn EP2034641A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007042974A DE102007042974A1 (de) 2007-09-10 2007-09-10 Verfahren und Vorrichtung zur Darstellung von anzeigbaren RDS-Informationen

Publications (2)

Publication Number Publication Date
EP2034641A2 true EP2034641A2 (fr) 2009-03-11
EP2034641A3 EP2034641A3 (fr) 2012-06-20

Family

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EP08105259A Withdrawn EP2034641A3 (fr) 2007-09-10 2008-09-08 Procédé et dispositif de représentation d'informations RDS pouvant être affichées

Country Status (2)

Country Link
EP (1) EP2034641A3 (fr)
DE (1) DE102007042974A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2768167A1 (fr) * 2013-02-14 2014-08-20 Technisat Digital Gmbh Procédé de réception et d'affichage d'une information de texte à l'aide d'un dispositif de réception radio
EP3373485A1 (fr) * 2017-03-10 2018-09-12 Alps Electric Co., Ltd. Appareil de réception de diffusion, procédé de commande associé et programme de commande associé
FR3071117A1 (fr) * 2017-09-14 2019-03-15 Psa Automobiles Sa Procede de fourniture d’informations relatives a un programme audio diffuse par une station de radio

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010005498A1 (de) 2010-01-23 2011-07-28 Audi Ag, 85057 Anzeige von Künstler und/oder Titel bei der Senderwahl
DE102013219129B4 (de) * 2013-09-24 2015-12-24 Technisat Digital Gmbh Verfahren zum Empfangen und Anzeigen einer Textinformation

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19813678A1 (de) * 1998-03-27 1999-10-07 Becker Gmbh RDS-Empfänger und Verfahren zum Betreiben eines solchen
DE19832471A1 (de) * 1998-07-20 2000-01-27 Bosch Gmbh Robert Verfahren und Vorrichtung zum Abspeichern von Sendernamen von RDS-Rundfunksendern
US7502589B2 (en) * 2002-12-06 2009-03-10 Bose Corporation Supplemental broadcast data processing
US7739152B2 (en) * 2005-09-15 2010-06-15 Bby Solutions, Inc. Audio playlist creation system and method
GB2423877B (en) * 2006-03-06 2007-05-30 Imagination Tech Ltd A method and system for selectively storing information received from a broadcast signal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2768167A1 (fr) * 2013-02-14 2014-08-20 Technisat Digital Gmbh Procédé de réception et d'affichage d'une information de texte à l'aide d'un dispositif de réception radio
EP3373485A1 (fr) * 2017-03-10 2018-09-12 Alps Electric Co., Ltd. Appareil de réception de diffusion, procédé de commande associé et programme de commande associé
FR3071117A1 (fr) * 2017-09-14 2019-03-15 Psa Automobiles Sa Procede de fourniture d’informations relatives a un programme audio diffuse par une station de radio

Also Published As

Publication number Publication date
DE102007042974A1 (de) 2009-03-26
EP2034641A3 (fr) 2012-06-20

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