EP2863562B1 - Procédé de détermination d'une identification d'émetteur radio et unité multimédia avec fonction radio - Google Patents

Procédé de détermination d'une identification d'émetteur radio et unité multimédia avec fonction radio Download PDF

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Publication number
EP2863562B1
EP2863562B1 EP13464014.3A EP13464014A EP2863562B1 EP 2863562 B1 EP2863562 B1 EP 2863562B1 EP 13464014 A EP13464014 A EP 13464014A EP 2863562 B1 EP2863562 B1 EP 2863562B1
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Prior art keywords
data
data content
radio
station
programme
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EP13464014.3A
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German (de)
English (en)
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EP2863562A1 (fr
Inventor
Mircea Rila
Valentin Pop
Maik Bollmann
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Continental Automotive GmbH
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Continental Automotive GmbH
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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
    • H04H60/35—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
    • H04H60/38—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 broadcast time or space
    • H04H60/41—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 broadcast time or space for identifying broadcast space, i.e. broadcast channels, broadcast stations or broadcast areas
    • H04H60/44—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 broadcast time or space for identifying broadcast space, i.e. broadcast channels, broadcast stations or broadcast areas for identifying broadcast 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 method for determining a radio station name from the data contents of a program station data stream and a multimedia unit with a radio function set up for this purpose.
  • the program station data stream is transmitted as part of a radio data system, for example the Radio Data System RDS, from a program station together with the radio program and can alternately contain the radio station name and possibly other names as data content, even if the program station data stream actually was intended to transmit only the radio station name.
  • a radio data system for example the Radio Data System RDS
  • the chronological sequence of the data stream i.e. of the successively transmitted data contents
  • the occurrence of a data content in the program station data stream is identified.
  • the frequency of occurrence of each of the identified data contents is evaluated. This is to be understood in such a way that the occurrence of this identified data content is evaluated over time in the program data stream, each data content being identified, for example, in sections.
  • the data content is recognized from the time-progressing program station data stream and the frequency of occurrence in the program station data stream is evaluated for each recognized data content, for example a word or a character string.
  • a modern radio system for example the FM radio data system RDS (Radio Data System) is not limited to broadcasting the audible radio program for different receivers, but instead introduces a data stream into this audible radio program that is in the radio receiver can be evaluated and displayed as text information.
  • the radio station name (program station name, PS name) is transmitted in the RDS data system as one of these codified information items.
  • the name of the radio station was intended to transmit the current program station name of the program station or radio station as static, non-temporal information.
  • the program stations in the program station data stream instead of or in addition to the radio station designation also transmit variable text which is shown in the radio display. This naturally has the consequence that the radio station name as such can no longer be reliably recognized in the radio receiver, since the data content varies and, for example, the title of a song currently being played is also displayed instead of the radio station name.
  • Some radio receivers or multimedia units with radio function allow the user to store the radio station name locally.
  • the user can press a button which causes the currently displayed data content of the program station data stream to be saved as the radio station name.
  • this is complex and prone to errors because if the button is accidentally pressed, for example, another, just randomly transmitted data content is stored as the radio station name.
  • it is often difficult for the user to identify the radio station name, especially if he is in an unfamiliar environment with the radio receiver, for example abroad. This is regularly the case with multimedia units installed in motor vehicles, to which the invention relates in particular.
  • Some radio receivers also offer automatic detection of the radio station name, in which the data content of the program station data stream is evaluated using learning or evaluation algorithms in order to automatically determine the radio station name from the (changing or varying) data content of the program station data stream based on statistical considerations in the background to investigate.
  • the FR 2 977 417 A1 suggests recording the frequency and duration of the transmission of individual data content in the program station data stream within a certain period of time and using the data content as the program station name that was broadcast most frequently and longest within the period.
  • a weighting factor is assigned to each of the data contents identified in the program station data stream and that the weighting factor of each of the data contents that have already been identified and are carried out in the context of statistics is identified when a new data content is identified in the program station data stream is adjusted.
  • the identification of a new data content in the program station data stream always takes place in a time sequence when the data content of a program station data stream changes or is retransmitted as data content, the same data content of course also being transmitted two or more times in succession from the program station data stream can be.
  • the term “new data content” therefore also includes, in particular, the retransmission of data content that has already been sent once.
  • the weighting factors of all data content contained in the statistics are adjusted according to the invention.
  • the radio station name is then determined on the basis of the weight factor from the various identified data contents.
  • the data content in particular can be adopted as a radio station name who has the highest weight factor.
  • the data content can be more reliably assessed with suitable algorithms, which are described in more detail below, with regard to whether they contain a radio station name.
  • the data content can simply be a text word or a sequence of characters in the program station data stream.
  • the determination can take place in parallel with the reception of the radio program in the background, without the user having to intervene or perceive the processing in the background.
  • the weight factor is increased when the data content occurs again in the program station data stream and, at the same time, the weight factors of the other (already identified) data content are reduced when the one data content occurs again. The reduction thus relates to the data contents from the program station data stream that have already been identified and which do not correspond to the currently identified data stream.
  • the weight factor of this data content is increased and the weight factors of all other data content contained in the statistics are reduced. This can be done, for example, according to a specific, predetermined formula. Increasing the weight factor of the data content just identified and simultaneously lowering all others already identified Data content takes into account a temporal component in the occurrence of the data content, which allows a more reliable determination of the radio station name than a mere statistic about the occurrence in the sense of a histogram.
  • a particularly advantageous embodiment of the method according to the invention is that when the weight factor for a data content is increased and / or decreased, for example by means of a calculation rule, the weight factor is taken into account that corresponds to this data content when identifying a data content prior to it
  • the data content may be the same or different in content.
  • x (t) describes the occurrence of this data content in the current identification of the data content from the program station data stream.
  • This procedure is an approach from neural networks, in which a learning rule is provided which has predetermined learning content.
  • weighting factors w are carried as vectors, the vector w having exactly as many entries as there are different ones in the program station data stream Data contents were identified. Each vector entry is therefore assigned to an identified data content, for example a data word.
  • the vector size can be managed dynamically, so that the vector is increased by one entry when a new data content is identified.
  • weight factor For example an average weight factor between a high weight factor and a low weight factor. This can be done, for example, in that the weight constant ⁇ from the above formula contains the value 0.5. At the first occurrence of data content, the weighting factor also assumes the value 0.5 when the above equation is applied. Of course, it is also possible according to the invention to assign the weight factor directly accordingly. Overall, the weight factors can range from 0 to 1 based on the definition of the above equation.
  • the weight constant for data content is preferably no longer changed according to the invention once it has been set.
  • a particularly preferred algorithm provides for the data contents identified from the data stream to be sorted into different predefined groups and for each predefined group to have its own weight constant ⁇ , which is given to the data content when it is first identified in the program station data stream, ie one first occurrence of the data content in the program station data stream, is assigned as a weight factor and which is taken into account in the increase and decrease in the weight factor in the event of a repeated occurrence or non-occurrence.
  • this allows the algorithm to be determined in a particularly simple manner as a vector equation.
  • the defined characteristics for sorting into the predefined groups take place on the basis of a character analysis of the individual characters of the data content or a sequence of characters.
  • a character is to be understood as an identifiable character in the program station data stream, for example a word character in the sense of an ASCII character set or the like. Specific examples of this are explained in more detail in the description of an exemplary embodiment.
  • the method for determining a radio station name can in each case be carried out for a specific life cycle.
  • the life cycle can be predefined in a simple manner by changing the radio station or the program station or a predetermined period, for example several hours or a day.
  • the number of different identified data contents, each of which is assigned a weight factor can be limited. This means that the statistics maintained for the identified data content (for example in the sense of a weight factor vector) with the respectively assigned weight factors is limited in such a way that only a maximum number of different data contents is permitted. If the statistics are carried out as a weight factor vector, this means that the number of entries in the vector is limited by a maximum number.
  • the data content with the currently lowest weighting factor is preferably used deleted, ie removed from the statistics, for example the vector, and the new data content added to the statistics.
  • Statistics in the above sense is understood to mean keeping a list of identified data contents and respectively assigned weight factors, for example in the form of a weight factor vector.
  • a unique program station identification is also transmitted in the RDS radio system for each program station.
  • PI code unique program station identification
  • RDS Radio Data System
  • the result of the determination of the radio station name for a program station identified by a PI code is preferably stored permanently, for example when changing a program station. This makes it possible to display the determined radio station name immediately when changing back to this program station.
  • the data content with the currently highest weight factor together with this (current) weight factor in a permanent memory for the program station for example with the program station identification (PI Code) is stored as an identifier, the data content stored as a result in the memory even when the program station is changed or when the radio receiver is switched off or the multimedia unit with radio function is retained.
  • PI Code program station identification
  • the determined radio station name is thus immediately available when the program station is changed. Nevertheless, only a limited storage space is required for this information.
  • the invention also relates to a multimedia unit with a radio function, in particular the multimedia unit of a motor vehicle, with a memory and a computing unit, for example in the form of a processor or with a processor, the computing unit using a program code that can be executed on the computing unit to carry out the above-described method or parts thereof. Furthermore, the invention relates to a computer program product with program code means which are suitable, when executed on a computing unit of a multimedia unit with radio function, to set up this computing unit for carrying out the above-described method or parts thereof. Further advantages, features and possible uses of the present invention also result from the following description of an exemplary embodiment and the drawing.
  • Fig. 1 The schematically illustrated method for determining 1 a radio station name begins when the radio is switched on or, more precisely, the selection 2 of a new program station, commonly also referred to as a radio station, possibly also after switching on the radio.
  • a detection 3 for changing data content takes place in the program station data stream sent out by the program station, which can usually contain the radio station designation and other designations as data content in alternation with time. If there is no changing data content, it can be assumed that the data content indicates the radio station name. In this case the name of the radio station is known and the procedure can be ended in step 4.
  • a temporary statistic 5 is created for the data content, in which at least the data content identified in the data stream and a weighting factor assigned to this data content are kept.
  • the actual execution of the method then begins with waiting 7 for a new data content in the program station data stream. This can be done, for example, by storing the old data content in a temporary memory and comparing it with the newly queried or identified data content. If they match, waiting 7 for a new data content is continued. There is a new data content from the program station data stream before, it is checked in step 8 whether this newly identified data content is already carried out in the temporary statistic 5 created for this program station. If this is the case, the weight factor for this data content is increased in the temporary statistics 9. Otherwise, a newly identified data content is added to the temporary statistics 5 by adding 10. In a next step 11, common in the schematically illustrated process flow, the weighting factors of all data contents that do not correspond to the currently identified data content of the program station data stream are reduced.
  • the radio station name is then selected in step 12 as part of the method 1 for determining the radio station name by identifying the entry in the temporary statistics 5 for the data content with the largest weighting factor as the radio station name.
  • the method 1 for determining the radio station name is then continued in step 7 with waiting for new data content.
  • the data content with the currently largest weight factor, or the radio station name determined in this way is stored in a permanent memory 13, preferably together with the currently determined weight factor.
  • the temporary statistic 5 is deleted after the radio station name has been saved in step 14 before the method 4 ends.
  • the temporary statistic 5 represents the vector w contains as different vector entries the data contents determined in the program station data stream together with the assigned weight factors w.
  • the vector w also only contain the weight factors, provided the positions of the vector, ie the individual weight factors, are clearly correlated with a data content.
  • the vector w is a time-dependent vector, so the vector w (t) has the weighting factor w for all data contents at the current time t , ie for the currently identified data content.
  • the vector is accordingly w ( t -1) the weight vector w at the time of the previously identified data content, ie the last identified data content before the current data content.
  • the weight constant ⁇ is a weighting (weight constant) assigned to the data content, preferably in the value range between 0 and 1.
  • the vector w ( t ) has the value 1 for the currently identified data content and the value 0 for all data contents which have already been identified in advance but do not correspond to the current data content.
  • the advantage of the invention lies in the approach of using a neural network with a learning algorithm and further classifying the data content according to certain types according to a character analysis. This classification into groups can also be extended to other types if they are identified.

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

Claims (11)

  1. Procédé de détermination d'une dénomination d'émetteur radio (1) à partir de contenus de données d'un flux de données de station de programme, lequel est émis au moyen d'un système de données radio par une station de programme conjointement avec un programme radio, la dénomination d'émetteur radio et d'autres dénominations étant émises en alternance dans le temps en tant que contenus de données, plusieurs contenus de données étant identifiés dans le flux de données de station de programme et étant mémorisés au moins temporairement, un facteur de poids étant associé à chacun des plusieurs contenus de données et après un changement des contenus de données transmis dans le flux de données de station de programme, le facteur de poids d'un contenu de données mémorisé étant augmenté lors d'une nouvelle identification dans le flux de données de station de programme, et le facteur de poids d'un contenu de données mémorisé qui n'est pas de nouveau identifié dans le flux de données de station de programme étant diminué, et la dénomination d'émetteur radio étant déterminée à l'aide des facteurs de poids des plusieurs contenus de données à partir des contenus de données ayant le facteur de poids le plus élevé.
  2. Procédé selon la revendication 1, caractérisé en ce que l'augmentation et/ou la diminution du facteur de poids (9, 11) pour un contenu de données tient respectivement compte du facteur de poids qui a été attribué à ce contenu de données lors de l'identification précédente dans le temps de ce contenu de données.
  3. Procédé selon l'une des revendications précédentes, caractérisé en ce que les contenus de données identifiés sont triés conformément à des caractéristiques fixées en différents groupes prédéfinis et une constante de poids est prédéfinie pour chaque groupe prédéfini, laquelle est attribuée en tant que facteur de poids à un contenu de données lors d'une première identification de ce contenu de données dans le flux de données de station de programme et prise en compte lors de l'augmentation et de la diminution du facteur de poids de ce contenu de données.
  4. Procédé selon la revendication 3, caractérisé en ce que les caractéristiques fixées sont contrôlées à l'aide d'une analyse de caractère des caractères individuels des contenus de données.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que le procédé de détermination d'une dénomination d'émetteur radio (1) est respectivement mis en œuvre pendant un cycle de vie déterminé.
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que le nombre des différents contenus de données identifiés auxquels est respectivement attribué un facteur de poids est limité.
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'une identification séparée d'une dénomination d'émetteur radio (1) est effectuée pour chaque station de programme.
  8. Procédé selon la revendication 7, caractérisé en ce qu'une liste de contenus de données identifiés est mémorisée (13) pour chaque station de programme.
  9. Procédé selon la revendication 8, caractérisé en ce que pour la mémorisation (13) d'un résultat, le contenu de données ayant le facteur de poids actuellement le plus élevé est mémorisé conjointement avec ce facteur de poids pour la station de programme, le contenu de données mémorisé comme résultat dans une mémoire étant également conservé lors d'un changement de la station de programme ou d'une mise hors tension d'une unité multimédia avec fonction radio.
  10. Unité multimédia avec fonction radio comprenant une mémoire et une unité de calcul, caractérisée en ce que l'unité de calcul est conçue pour mettre en œuvre le procédé selon l'une des revendications 1 à 9 à l'aide de moyens de code de programme pouvant être exécutés sur l'unité de calcul.
  11. Produit de programme informatique comprenant des moyens de code de programme qui sont adaptés pour, lors de l'exécution sur une unité de calcul de l'unité multimédia avec fonction radio selon la revendication 10, configurer celle-ci pour mettre en œuvre le procédé selon l'une des revendications 1 à 9.
EP13464014.3A 2013-10-16 2013-10-16 Procédé de détermination d'une identification d'émetteur radio et unité multimédia avec fonction radio Active EP2863562B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13464014.3A EP2863562B1 (fr) 2013-10-16 2013-10-16 Procédé de détermination d'une identification d'émetteur radio et unité multimédia avec fonction radio

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EP13464014.3A EP2863562B1 (fr) 2013-10-16 2013-10-16 Procédé de détermination d'une identification d'émetteur radio et unité multimédia avec fonction radio

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EP2863562A1 EP2863562A1 (fr) 2015-04-22
EP2863562B1 true EP2863562B1 (fr) 2020-03-18

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Publication number Priority date Publication date Assignee Title
JP2018152658A (ja) * 2017-03-10 2018-09-27 アルプス電気株式会社 放送受信装置、放送受信装置の制御方法、及び放送受信装置の制御プログラム
FR3070807B1 (fr) * 2017-09-05 2019-08-30 Continental Automotive France Procede de determination des noms de station d'une liste de stations radio

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DE19813678A1 (de) 1998-03-27 1999-10-07 Becker Gmbh RDS-Empfänger und Verfahren zum Betreiben eines solchen
EP2008384B1 (fr) * 2006-04-20 2018-05-16 QUALCOMM Incorporated Langage de repérage pour la diffusion radio
FR2977417B1 (fr) * 2011-06-29 2015-08-07 Continental Automotive France Procede d'identification d'une chaine de caracteres recue sur un recepteur radio fm.

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