EP1968220A2 - Dispositif et procédé de préparation d'informations en vue de leur envoi radio - Google Patents

Dispositif et procédé de préparation d'informations en vue de leur envoi radio Download PDF

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Publication number
EP1968220A2
EP1968220A2 EP08101454A EP08101454A EP1968220A2 EP 1968220 A2 EP1968220 A2 EP 1968220A2 EP 08101454 A EP08101454 A EP 08101454A EP 08101454 A EP08101454 A EP 08101454A EP 1968220 A2 EP1968220 A2 EP 1968220A2
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EP
European Patent Office
Prior art keywords
radio
program
information
classification
determined
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Withdrawn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
EP08101454A
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German (de)
English (en)
Other versions
EP1968220A3 (fr
Inventor
Reiner Wuerz
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.)
Continental Automotive GmbH
Original Assignee
Continental Automotive 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 GmbH filed Critical Continental Automotive GmbH
Publication of EP1968220A2 publication Critical patent/EP1968220A2/fr
Publication of EP1968220A3 publication Critical patent/EP1968220A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H04H60/56—Arrangements characterised by components specially adapted for monitoring, identification or recognition covered by groups H04H60/29-H04H60/54
    • H04H60/58—Arrangements characterised by components specially adapted for monitoring, identification or recognition covered by groups H04H60/29-H04H60/54 of audio
    • 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
    • H04H60/61—Arrangements for services using the result of monitoring, identification or recognition covered by groups H04H60/29-H04H60/54
    • H04H60/65—Arrangements for services using the result of monitoring, identification or recognition covered by groups H04H60/29-H04H60/54 for using the result on users' side
    • 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
    • H04H60/47—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 recognising genres

Definitions

  • the invention relates to a method and a device for providing information in a radio receiver to radio broadcasts transmitted by analog broadcasting.
  • Radio receivers typically convert a radio frequency signal from a single radio program to a lower intermediate frequency. This reaction is analogous by means of a suitable mixer arrangement.
  • the radio program to be converted is selectable by specifying a frequency of an oscillator whose signal is supplied to the mixer arrangement. If more than one radio program is to be received simultaneously, a corresponding number of analogue mixer arrangements and oscillators must be provided.
  • radio broadcasts for example by means of a radio data system, or in short: RDS
  • further information is transmitted digitally to the associated radio program, for example a station name or a program type.
  • further information is generally not available for every received radio program.
  • this further information is not always updated according to a current content of the radio broadcast, for example, when a music broadcast is interrupted by news bulletins.
  • the object of the invention is to provide a method and a device which provides information on radio broadcasts.
  • the invention is characterized by a method and a corresponding device for providing information on radio broadcasts in a radio receiver, which are transmitted by means of analog broadcasting.
  • a respective audio signal of at least one received radio program in each case at least one feature is determined which is representative of a content of the respective radio program.
  • at least one classification representing the content of the respective radio program is determined.
  • the respectively determined classification of the at least one radio program is provided as information about the respective radio program in the radio receiver.
  • the respectively determined at least one feature and the respective classification are in particular representative of a supposed content of the respective radio program.
  • the respective at least one feature is based, for example, on a frequency spectrum of the respective audio signal and / or a time profile of the respective audio signal and / or a time-frequency spectrum of the respective audio signal.
  • the advantage is that content-related information in the radio receiver in this way are also available for radio broadcasts to which no further information is broadcast, in particular to a program type of the respective radio program.
  • the type of program may be provided as information allowing, for example, a distinction between a language program or a music program and, if appropriate, between different musical genres, for example between classical music or pop music.
  • the respective classification of the respective associated radio program is stored in a data memory.
  • At least one further information on the respective radio program is determined, which is optionally broadcast by a respective radio station.
  • the at least one further information is stored in the data memory.
  • the classifications and other information stored in the data store are provided in the radio receiver.
  • the at least one further piece of information is broadcast according to the radio data system, for example.
  • the at least one further information comprises, for example, a station name of the associated radio station, the program type of the radio program, a music track or artist currently or next played.
  • At least one of the at least one received radio program is selected as a function of the respectively determined classification and, if appropriate, depending on the at least one further information item.
  • the selection relates to an automatic playback of the selected radio program or a presentation, for example in an automatically created selection list presented to the user for manual selection.
  • the received radio broadcasts are automatically filtered or sorted and possibly presented as a function of the user's specifications, for example with regard to a preferred music direction or messages or with respect to a preferred artist.
  • This automatically filtered or sorted representation forms the selection of radio broadcasts. This allows the user a particularly simple and quick access to the radio programs that are likely to interest them.
  • it can also be provided be automatically reproduce an automatically selected radio program, for example, the one with the best match with the user's preferences or the one that has the best signal strength and thus allows a low-noise playback.
  • At least one predetermined frequency band in which at least two radio broadcasts are received, is digitized directly and the at least two radio broadcasts are digitally processed substantially parallel to one another with respect to the determination of the respective classification and, optionally, at least one further information item.
  • Direct digitizing makes it possible to dispense with a previous analog frequency conversion, for example to an intermediate frequency or on a baseband.
  • a high-frequency signal which is received by an antenna of the radio receiver and optionally subsequently amplified by a low-noise amplifier unit is therefore directly sampled and digitized.
  • circuitry for the radio receiver by dispensing with analog frequency translation and filtering is low and independent of a number of received and parallel processed radio broadcasts.
  • all received radio broadcasts in the at least one predetermined frequency band are available for processing simultaneously and parallel to one another. This does not require frequency tuning to a frequency at which the particular radio program is received.
  • the entire processing of the radio broadcasts and in particular the frequency conversion can be done digitally. This allows the information and other information to be kept up to date very easily.
  • At least two radio broadcasts are processed and reproduced digitally with respect to an acoustic reproduction substantially parallel to one another.
  • two or more than two occupants of a vehicle may each listen to different radio broadcasts, for example via headphones.
  • a radio receiver comprises an antenna ANT, an amplifier unit VE, an analog-to-digital converter ADW, a digital signal processor DSP, a first digital / analog converter DAW1 and optionally a second digital / analog converter DAW2 (FIG. FIG. 1 ).
  • the antenna ANT is coupled to an input of the amplifier unit VE.
  • the amplifier unit VE is output coupled to an input of the analog-to-digital converter ADW.
  • the analog-to-digital converter ADW is coupled on the output side to an input of the digital signal processor DSP.
  • the digital signal processor DSP is coupled to an input of the first and optionally the second digital-to-analog converter DAW1, DAW2.
  • a first loudspeaker LS1 is coupled to an output of the first digital-to-analog converter DAW1.
  • a power amplifier is further provided, which amplifies an analog audio signal, which is provided on the output side of the first digital-to-analog converter DAW1, for the reproduction by the first loudspeaker LS1.
  • further digital-to-analog converters and further loudspeakers preferably each with a power amplifier for amplifying the respective analog audio signal.
  • the antenna ANT at least one predetermined frequency range FB is received, in which at least one radio program RS can be received.
  • This at least one predetermined frequency range FB is amplified by the preferably low-noise amplifier unit VE and fed to the analog-to-digital converter ADW.
  • the amplifier unit VE can also comprise a filter unit, not shown, which is preferably designed as a low-pass filter or as a band-pass filter, which is designed to let pass the at least one predetermined frequency range FB.
  • the analog-to-digital converter ADW is designed to digitize the at least one predetermined frequency range FB and to supply it in digital form to the digital signal processor DSP.
  • the analog-to-digital converter ADW is designed to scan the input side supplied at least one predetermined frequency range FB depending on the respective at least one predetermined frequency range FB with a high sampling frequency.
  • This sampling frequency is preferably so high that all radio broadcasts RS that can be received in the at least one predetermined frequency range FB are detected. If necessary, the sampling frequency must be more than 100 MHz.
  • the sampling frequency is preferably selected to be so high that it is greater than twice the highest frequency of the at least one predetermined frequency range FB received by the antenna ANT.
  • the digital signal processor DSP can also be designed as a reconfigurable logic, as a microcontroller or as another arithmetic unit.
  • the digital signal processor DSP may also comprise a plurality of separately formed or jointly arranged on a chip or in a common chip housing computing units or processor cores.
  • the radio receiver further comprises a data memory MEM and a user interface unit BSE.
  • the data memory MEM is coupled to the output of the digital signal processor DSP and to the user interface unit BSE.
  • the user interface unit BSE comprises, for example, a display unit for displaying, for example, a selection list of the received radio broadcasts RS, a station name or a program type of the respective radio program RS.
  • the user interface unit BSE preferably also includes, for selecting radio broadcasts RS by a user, an input unit with controls, for example, with buttons or knobs, or a voice input unit.
  • FIG. 2 shows a digital signal processing in the digital signal processor DSP.
  • the at least one predetermined frequency range FB which is provided to the digital signal processor DSP in digital form by the analog-to-digital converter ADW
  • at least one received radio program RS is digitally processed.
  • two or more than two radio broadcasts RS and particularly preferably all received radio broadcasts RS are digitally processed in the at least one predetermined frequency range FB.
  • the digital processing of the received radio broadcasts RS preferably takes place substantially parallel to one another, that is to say substantially simultaneously.
  • a base band converter unit BKE is provided for this purpose, which converts a frequency range of the respective radio program RS into a baseband frequency range, for example by digital mixing and filtering, in which the further processing preferably takes place.
  • the digital processing also includes a decoding or extraction of a respective audio signal of the radio program RS, which is further processed as a digital audio signal AS.
  • an audio signal evaluation unit ASAE is provided, to which the respectively extracted or decoded digital audio signals AS are supplied.
  • the audio signal evaluation unit ASAE is designed to determine, depending on the respective digital audio signal AS, at least one classification K representing a supposed content of the respective radio program RS and to provide it as information I1 to the respective radio program RS in the radio receiver.
  • the classification K or the information I1 is preferably stored in the data memory MEM assigned to the respectively associated radio program RS.
  • the information I1 preferably relates to a program type of the associated radio program RS.
  • the program type for example, allows a distinction between a language program and a music program MUSIC.
  • the language program includes, for example, news broadcasts NEWS.
  • the music program MUSIC includes, for example, different musical genres such as classical music CLASSIC, rock music ROCK or pop music POP. Other or further types of programs as well as language programs or music programs may also be provided.
  • the audio signal evaluation unit is for determining the respective classification K or the respective information I1 ASAE formed, for example, depending on the respective digital audio signal AS to determine at least one feature MM, which is representative of the supposed content of the respective radio program RS.
  • the respective feature MM is determined, for example, as a function of a time profile and / or a frequency spectrum and / or a time-frequency spectrum of the respective digital audio signal AS.
  • the respective feature MM includes a spectral fingerprint of the respective digital audio signal AS or is determined depending on such.
  • the frequency spectrum and / or its timing that is the time-frequency spectrum, is generally different for voice programs and music programs MUSIC and is also different for different music programs MUSIC such as classical music CLASSIC and pop or rock music POP, ROCK.
  • the respective classification K or information I1 is determined as a function of the respective at least one feature MM.
  • the information I1 is determined for each received radio program RS, that is to say in particular for those radio broadcasts RS which are currently not reproduced.
  • the determination of the classification K and the information I1 preferably takes place substantially parallel to one another.
  • it can also be provided to evaluate the received radio broadcasts RS sequentially and to determine the respectively associated classification K and information I1.
  • the digital signal processor DSP is preferably so powerful that the information I1 is up to a few seconds or a few tens of seconds for all received radio broadcasts RS.
  • a data signal evaluation unit DSAE is also provided.
  • an additional data signal DS may be broadcast, if necessary is also received and extracted or decoded, and which is preferably supplied to the data signal evaluation unit DSAE.
  • the data signal DS is formed, for example, according to the radio data system, or RDS for short.
  • the respective station name and / or the respective program type of the radio program RS are transmitted in the data signal DS.
  • Data transmitted by means of the data signal DS are provided by the data signal evaluation unit DSAE as at least one further piece of information 12.
  • the at least one further piece of information 12 is preferably also stored in the data memory MEM.
  • both the information I1 and the at least one further information 12 are determined. However, it can also be provided to carry out the determination of the information I1 only for radio broadcasts RS for which the data signal DS is not available.
  • the information I1 stored in the data memory MEM and optionally at least one further piece of information 12 relating to the respective radio broadcasts RS is available to the user interface unit BSE.
  • this information is displayed on the display unit or the display is determined on the display unit depending on this information.
  • the station name possibly determined from the data signal DS and the program type determined from the digital audio signal AS and / or the data signal DS are displayed or used for the display.
  • radio broadcasts RS may be provided to display the radio broadcasts RS sorted according to their respective program type. Furthermore, it can be provided that, depending on a specification of a user, only those radio programs RS assigned to a given program type or to a plurality of predetermined program types are automatically selected for display or playback.
  • One program type or several types of programs can be, for example are preset as the preference of the respective user and the received radio broadcasts RS are sorted according to the respective preference for display by the user or automatically reproduced.
  • the respective user can store a currently displayed radio program RS as a preference, for example by pressing a key.
  • a predetermined feature VMM As a result, other radio broadcasts RS whose respective at least one feature MM is similar to this at least one predetermined feature VMM can be automatically selected and displayed as a preferred radio program RS.
  • FIG. 3 Fig. 10 shows a flowchart of a program executed in the radio receiver and in particular by the digital signal processor DSP.
  • the program starts in a step S1.
  • the digital audio signal AS of the respective radio program RS is extracted or decoded.
  • the digital audio signal AS of a radio program RS can also comprise two or more than two audio channels, for example for stereo playback or surround sound.
  • the second step S2 if appropriate, the converting of the received and digitized high-frequency signal by means of the baseband converter unit BKE takes place as appropriate.
  • the respective classification K is determined as a function of the respective at least one feature MM, that is to say determined in particular as a function of the respective at least one feature MM.
  • the respective information I1 is determined as a function of the respectively determined classification K.
  • the determination of the respective classification K as a function of the respectively at least one feature MM comprises, for example, that in a step S5 a predetermined variable is assigned to a counter variable i, for example zero.
  • a deviation of the respective at least one feature MM from a corresponding predetermined feature VMM is determined.
  • several predetermined features VMM are stored for different program types.
  • predefined features VMM are already specified ex works for the various program types.
  • possibly predetermined features VMM can also be predetermined by the user selecting a radio program RS as being preferred, for example by pressing a key, and the features MM determined from the associated digital audio signal AS being stored as predefined features VMM.
  • the predefined features VMM are stored, for example, in a table or in a database and can be called up, for example, by means of the counting variable i as an index.
  • the respective feature MM is compared with at least one of the predefined features VMM and preferably with all predefined features VMM. The deviation of the respective feature MM from the respective predetermined feature VMM with the count variable i as index is determined.
  • a class assigned to each factory-set feature VMM which in particular represents the associated program type and, correspondingly, a content of the radio program RS.
  • step S6 If the condition is not met in step S6 or if the respective feature MM has not yet been compared with all predefined features VMM, then the program is continued in a step S7 in which the count variable i is increased. The program is continued in step S6. If the condition has been met in step S6 and / or if the respective feature MM has been compared with all predefined features VMM, then the program is continued in a step S8. In step S8, the respective information I1 is determined as classification K.
  • the classification K depends on the predefined features VMM that satisfy the condition in step S6.
  • the classification K of the respective radio transmitter RS is for example determined as the class which is assigned to the predetermined feature VMM which has the minimum deviation value MIN to the respective feature MM.
  • the classification K can also be determined differently.
  • the determined information I1 is provided in the radio receiver, for example for use through the user interface unit BSE.
  • the step S4 can also be designed differently and comprise other or further steps than the steps S5 to S8.
  • a step S9 may be provided, in which the respective information I1 assigned to the associated radio program RS is stored in the data memory MEM. Furthermore, a step S10 may be provided, in which the data signal DS, which is optionally received at the radio program RS, is extracted or decoded. In a step S11, the at least one further information 12 is then determined as a function of the data signal DS. Preferably, in a step S12, the respective further information 12 assigned to the respective radio program RS is stored in the data memory MEM.
  • a step S13 may be provided, in which a selection SEL of a radio program RS or several radio broadcasts RS is determined as a function of the at least one information I1 and optionally the at least one further information 12, ie in particular depending on the at least one information I1 and possibly the at least one further information 12 is determined.
  • the selection SEL can for example be done by filtering a list of all received radio broadcasts RS according to the specifications of the respective user.
  • the specifications relate, for example, to the type of program or even a title or artist of a piece of music.
  • the title or artist can be determined, for example, from the associated data signal DS of the radio program RS.
  • it can also be provided to determine the title by an evaluation of the digital audio signal AS and by comparison with patterns which are stored in a database.
  • the step S13 is preferably executed by the user interface unit BSE.
  • the user interface unit calls for the at least one information I1 and optionally the at least one further information 12 from the data memory MEM.
  • the program ends in a step S14.
  • the program is continuously executed during operation of the radio receiver in order to keep the at least one information I1 and possibly the at least one further information 12 to the received radio broadcasts RS current and to allow a corresponding current selection SEL.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Circuits Of Receivers In General (AREA)
EP08101454.0A 2007-02-28 2008-02-11 Dispositif et procédé pour fournir des informations pour des programmes de radio Withdrawn EP1968220A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710009730 DE102007009730A1 (de) 2007-02-28 2007-02-28 Verfahren und Vorrichtung zum Bereitstellen von Informationen zu Radiosendungen

Publications (2)

Publication Number Publication Date
EP1968220A2 true EP1968220A2 (fr) 2008-09-10
EP1968220A3 EP1968220A3 (fr) 2013-06-05

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Application Number Title Priority Date Filing Date
EP08101454.0A Withdrawn EP1968220A3 (fr) 2007-02-28 2008-02-11 Dispositif et procédé pour fournir des informations pour des programmes de radio

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EP (1) EP1968220A3 (fr)
DE (1) DE102007009730A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2928094A1 (fr) * 2014-04-03 2015-10-07 Alpine Electronics, Inc. Appareil de réception et procédé de fourniture d'informations associées à des signaux de radiodiffusion reçus

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0907265A2 (fr) * 1997-10-02 1999-04-07 Robert Bosch Gmbh Récepteur de radiodiffusion RDS avec une mémoire pour les fréquences alternatives et méthode pour organiser la mémoire
US6654428B1 (en) * 1998-01-13 2003-11-25 Massachusetts Institute Of Technology Systems and methods for wireless communications
US20050124330A1 (en) * 2003-12-03 2005-06-09 Samsung Electronics Co., Ltd. Reception apparatus and method of a mobile station in an mobile communication system
US20050157818A1 (en) * 2004-01-20 2005-07-21 Leonard Dauphinee Direct digital conversion tuner and method for using same
EP1557957A1 (fr) * 2004-01-20 2005-07-27 Broadcom Corporation Récepteur de radio à transformation directe et procédé pour son utilisation
US20060056546A1 (en) * 2004-09-13 2006-03-16 Hitachi, Ltd. Orthogonality detector, and quadrature demodulator and sampling quadrature demodulator using detector thereof
US20060062363A1 (en) * 2004-09-19 2006-03-23 Sirenada, Inc. Method and apparatus for interacting with broadcast programming

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Publication number Priority date Publication date Assignee Title
CA2066851C (fr) * 1991-06-13 1996-08-06 Edwin A. Kelley Appareil et methode de reception de signaux numeriques par plusieurs utilisateurs utilisant des canaux multifrequence
DE19502359A1 (de) * 1995-01-26 1996-08-08 Becker Gmbh Rundfunkempfänger
US6961550B2 (en) * 2000-12-12 2005-11-01 International Business Machines Corporation Radio receiver that changes function according to the output of an internal voice-only detector
US7076233B2 (en) * 2003-03-28 2006-07-11 Sandbridge Technologies, Inc. AM receiver and demodulator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0907265A2 (fr) * 1997-10-02 1999-04-07 Robert Bosch Gmbh Récepteur de radiodiffusion RDS avec une mémoire pour les fréquences alternatives et méthode pour organiser la mémoire
US6654428B1 (en) * 1998-01-13 2003-11-25 Massachusetts Institute Of Technology Systems and methods for wireless communications
US20050124330A1 (en) * 2003-12-03 2005-06-09 Samsung Electronics Co., Ltd. Reception apparatus and method of a mobile station in an mobile communication system
US20050157818A1 (en) * 2004-01-20 2005-07-21 Leonard Dauphinee Direct digital conversion tuner and method for using same
EP1557957A1 (fr) * 2004-01-20 2005-07-27 Broadcom Corporation Récepteur de radio à transformation directe et procédé pour son utilisation
US20060056546A1 (en) * 2004-09-13 2006-03-16 Hitachi, Ltd. Orthogonality detector, and quadrature demodulator and sampling quadrature demodulator using detector thereof
US20060062363A1 (en) * 2004-09-19 2006-03-23 Sirenada, Inc. Method and apparatus for interacting with broadcast programming

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2928094A1 (fr) * 2014-04-03 2015-10-07 Alpine Electronics, Inc. Appareil de réception et procédé de fourniture d'informations associées à des signaux de radiodiffusion reçus

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Publication number Publication date
EP1968220A3 (fr) 2013-06-05
DE102007009730A1 (de) 2008-09-18

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