EP1227608A2 - Méthode pour commuter un récepteur de radiodiffusion vers une transmission différente qui comporte le même contenu audiophonique - Google Patents

Méthode pour commuter un récepteur de radiodiffusion vers une transmission différente qui comporte le même contenu audiophonique Download PDF

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Publication number
EP1227608A2
EP1227608A2 EP01126167A EP01126167A EP1227608A2 EP 1227608 A2 EP1227608 A2 EP 1227608A2 EP 01126167 A EP01126167 A EP 01126167A EP 01126167 A EP01126167 A EP 01126167A EP 1227608 A2 EP1227608 A2 EP 1227608A2
Authority
EP
European Patent Office
Prior art keywords
audio
radio receiver
switching
time offset
services
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.)
Granted
Application number
EP01126167A
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German (de)
English (en)
Other versions
EP1227608A3 (fr
EP1227608B1 (fr
Inventor
Kurt Gieske
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1227608A2 publication Critical patent/EP1227608A2/fr
Publication of EP1227608A3 publication Critical patent/EP1227608A3/fr
Application granted granted Critical
Publication of EP1227608B1 publication Critical patent/EP1227608B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/20—Arrangements for broadcast or distribution of identical information via plural systems
    • H04H20/22—Arrangements for broadcast of identical information via plural 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
    • H04H2201/20—Aspects of broadcast communication characterised by the type of broadcast system digital audio broadcasting [DAB]

Definitions

  • the invention is based on a method for Audio service switching for a radio receiver after the Genre of the independent claim.
  • Radio receivers are already known which are both analog as well as digitally transmitted audio services received and in Dependency on signal parameters for equivalent digital and analogue audio services, if applicable Switch to switch to the audio service which has a much better transmission quality. This is particularly the case with such broadcast distribution systems displayed that have incomplete care or around Spreading effects in the atmosphere that only or at least predominantly a broadcast transmission system influence compensation by switching to reach.
  • Procedure switching between systems proposed that takes into account the time offset and also the bandwidth and the volume when switching adapts to minimize a switching effect.
  • to Minimize switching between two systems with same audio content must have the essential differences the audio signals are analyzed and when switching be adjusted accordingly.
  • the main differences are therefore time delay, volume, bandwidth and mono or. Stereo broadcasting.
  • FIG. 2 shows this as Block diagram.
  • the PCM audio signals 8 and 9 of the FM or DAB receiver 3 and 4 go to short-term integrators 10 and 11, which provide output signals 14 and 15, which in one subsequent comparator 12 are compared. As The output signal is then the time offset.
  • Another method can be used to search for the time delay via the short-term power instead of the last equation.
  • a few maxima and minima are searched for in the DAB section and the time intervals and amplitude ratios of these extremes to one another are determined.
  • This pattern is then searched for in the FM signal.
  • P [ k max 1 . k min 1 . k max 2 . k min 2 . k max 3 ]
  • the patterns E q and P d are then determined.
  • the asynchronous conversion of the sampling rate converter can be carried out slowly from, for example, 44.3 kHz to 44.1 kHz along a continuous function.
  • the memory is being set up, however, no time-synchronized switchover can take place as long as the time offset has not yet been found.
  • the sampling rate converter must adapt F in to the output sampling rate F out . This can be done along a function.
  • the continuous function with which the sample rate converter slowly builds up the memory 26 must have some criteria for inaudibility.
  • the function must be continuous and have the value F in divided by F out at time T 0 , when the memory is full, so that the memory 26 does not continue to run full or empty.
  • This function p (T) determines how many samples are read from the memory 26 by the sample rate converter.
  • the procedure for determining the delay determines short-term services. These services can also be used to adjust the volume. After the time synchronization has been found, the time delay d, the time profiles of the short-term services look approximately the same. Only a gain factor can distinguish the time profiles. This amplification factor is expressed in a difference in the volume level. The volume factor between DAB and FM can be determined, for example, by averaging over the gain factor.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)
  • Stereo-Broadcasting Methods (AREA)
EP20010126167 2001-01-26 2001-11-03 Méthode pour commuter un récepteur de radiodiffusion vers une transmission différente qui comporte le même contenu audiophonique Expired - Lifetime EP1227608B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10103400 2001-01-26
DE2001103400 DE10103400A1 (de) 2001-01-26 2001-01-26 Verfahren zur Audioserviceumschaltung bei einem Rundfunkempfänger

Publications (3)

Publication Number Publication Date
EP1227608A2 true EP1227608A2 (fr) 2002-07-31
EP1227608A3 EP1227608A3 (fr) 2003-01-02
EP1227608B1 EP1227608B1 (fr) 2011-05-11

Family

ID=7671765

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010126167 Expired - Lifetime EP1227608B1 (fr) 2001-01-26 2001-11-03 Méthode pour commuter un récepteur de radiodiffusion vers une transmission différente qui comporte le même contenu audiophonique

Country Status (4)

Country Link
EP (1) EP1227608B1 (fr)
JP (1) JP4002110B2 (fr)
BR (1) BR0200175A (fr)
DE (1) DE10103400A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007025813A1 (fr) * 2005-09-02 2007-03-08 Robert Bosch Gmbh Procede et dispositif pour commuter entre les emissions de plusieurs signaux audio de differentes sources emettrices
EP2355381A1 (fr) * 2009-12-09 2011-08-10 Alpine Electronics, Inc. Dispositif de traitement audio et procédé pour le traitement des signaux audio
CN102255680A (zh) * 2011-07-12 2011-11-23 北京海尔集成电路设计有限公司 自动切换数字音频广播信号和调频信号的方法和装置
EP2536043A1 (fr) 2011-06-14 2012-12-19 Panasonic Automotive Systems Europe GmbH Détection de retard optimisée pour signaux de diffusion simultanée
DE112009002283B4 (de) * 2008-11-20 2012-12-27 Mitsubishi Electric Corp. Rundfunkempfänger
DE102012012272A1 (de) 2012-06-21 2013-01-17 Daimler Ag Unterbrechungsfreies Umschalten zwischen digital übertragenen Audioservices in einem Rundfunkempfänger
EP2747314A1 (fr) 2012-12-19 2014-06-25 Nxp B.V. Système permettant de mélanger des signaux

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006115200A (ja) * 2004-10-14 2006-04-27 Fujitsu Ten Ltd 受信機
JP4845709B2 (ja) * 2006-12-20 2011-12-28 アルパイン株式会社 オーディオ・ビジュアル機器及びそのオーディオ・ビデオフレーム作成方法
DE102008002689A1 (de) 2008-06-26 2009-12-31 Robert Bosch Gmbh Vorrichtung und Verfahren zur Anpassung des Widergabespektrums zweier Audioquellen
JP5540953B2 (ja) * 2010-07-12 2014-07-02 パナソニック株式会社 クロック再生成回路およびこれを用いたデジタルオーディオ再生装置
JP5919500B2 (ja) * 2011-12-28 2016-05-18 パナソニックＩｐマネジメント株式会社 クロック再生成回路およびデジタルオーディオ再生装置
CA3116833A1 (fr) * 2017-10-24 2019-05-02 Skywave Networks Llc Synchronisation d'horloge lors d'une commutation entre des modes de transmission de diffusion et de donnees

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993009615A1 (fr) * 1991-11-01 1993-05-13 Telefunken Fernseh Und Rundfunk Gmbh Systeme de radiodiffusion et recepteur de radiodiffusion
EP0588741A1 (fr) * 1992-09-18 1994-03-23 France Telecom Système de diffusion de signaux numériques à génération active de la diversité en temps, émetteur et récepteur correspondants
EP0863632A2 (fr) * 1997-03-04 1998-09-09 Sony Corporation Dispositif pour la réception de programmes radiophoniques numériques
EP0865175A2 (fr) * 1997-01-24 1998-09-16 Kabushiki Kaisha Kenwood Récepteur de programmes radiophoniques, qui est capable de capter plusieurs systèmes de transmission, comme par example la radiodiffusion numérique (DAB) et la transmission de données supplémentaires (RDS)
WO1999020007A1 (fr) * 1997-10-09 1999-04-22 Usa Digital Radio, Inc. Systeme et procede attenuant les interruptions intermittentes dans un systeme d'emissions radio
EP0954131A2 (fr) * 1998-04-28 1999-11-03 Pioneer Electronic Corporation Récepteur de radiodiffusion comportant à la fois un récepteur pour la radiodiffusion numérique DAB et pour la réception d'émissions à modulation de fréquence avec un décodeur de signaux RDS
EP1022873A2 (fr) * 1999-01-22 2000-07-26 Sony Corporation Récepteur pour la réception de transmissions de radiodiffusion numérique ainsi que de transmissions de radiodiffusion en modulation de fréquence, comportant des données supplémentaires
WO2000051272A1 (fr) * 1999-02-24 2000-08-31 Usa Digital Radio, Inc. Procede de melange audio, emetteur et recepteur pour radiodiffusion numerique sur voie dans les bandes ma et mf
DE19857888A1 (de) * 1998-12-17 2000-10-19 Becker Gmbh DAB-Empfänger mit einem RDS-FM-Empfänger

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4103061C2 (de) * 1991-02-01 1995-04-13 Blaupunkt Werke Gmbh Rundfunkempfänger
DE4103064A1 (de) * 1991-02-01 1992-08-13 Blaupunkt Werke Gmbh Rundfunkempfaenger

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993009615A1 (fr) * 1991-11-01 1993-05-13 Telefunken Fernseh Und Rundfunk Gmbh Systeme de radiodiffusion et recepteur de radiodiffusion
EP0588741A1 (fr) * 1992-09-18 1994-03-23 France Telecom Système de diffusion de signaux numériques à génération active de la diversité en temps, émetteur et récepteur correspondants
EP0865175A2 (fr) * 1997-01-24 1998-09-16 Kabushiki Kaisha Kenwood Récepteur de programmes radiophoniques, qui est capable de capter plusieurs systèmes de transmission, comme par example la radiodiffusion numérique (DAB) et la transmission de données supplémentaires (RDS)
EP0863632A2 (fr) * 1997-03-04 1998-09-09 Sony Corporation Dispositif pour la réception de programmes radiophoniques numériques
WO1999020007A1 (fr) * 1997-10-09 1999-04-22 Usa Digital Radio, Inc. Systeme et procede attenuant les interruptions intermittentes dans un systeme d'emissions radio
EP0954131A2 (fr) * 1998-04-28 1999-11-03 Pioneer Electronic Corporation Récepteur de radiodiffusion comportant à la fois un récepteur pour la radiodiffusion numérique DAB et pour la réception d'émissions à modulation de fréquence avec un décodeur de signaux RDS
DE19857888A1 (de) * 1998-12-17 2000-10-19 Becker Gmbh DAB-Empfänger mit einem RDS-FM-Empfänger
EP1022873A2 (fr) * 1999-01-22 2000-07-26 Sony Corporation Récepteur pour la réception de transmissions de radiodiffusion numérique ainsi que de transmissions de radiodiffusion en modulation de fréquence, comportant des données supplémentaires
WO2000051272A1 (fr) * 1999-02-24 2000-08-31 Usa Digital Radio, Inc. Procede de melange audio, emetteur et recepteur pour radiodiffusion numerique sur voie dans les bandes ma et mf

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007025813A1 (fr) * 2005-09-02 2007-03-08 Robert Bosch Gmbh Procede et dispositif pour commuter entre les emissions de plusieurs signaux audio de differentes sources emettrices
DE112009002283B4 (de) * 2008-11-20 2012-12-27 Mitsubishi Electric Corp. Rundfunkempfänger
US8611438B2 (en) 2008-11-20 2013-12-17 Mitsubishi Electric Corporation Broadcast receiver
EP2355381A1 (fr) * 2009-12-09 2011-08-10 Alpine Electronics, Inc. Dispositif de traitement audio et procédé pour le traitement des signaux audio
EP2536043A1 (fr) 2011-06-14 2012-12-19 Panasonic Automotive Systems Europe GmbH Détection de retard optimisée pour signaux de diffusion simultanée
CN102255680A (zh) * 2011-07-12 2011-11-23 北京海尔集成电路设计有限公司 自动切换数字音频广播信号和调频信号的方法和装置
CN102255680B (zh) * 2011-07-12 2013-01-30 北京海尔集成电路设计有限公司 自动切换数字音频广播信号和调频信号的方法和装置
DE102012012272A1 (de) 2012-06-21 2013-01-17 Daimler Ag Unterbrechungsfreies Umschalten zwischen digital übertragenen Audioservices in einem Rundfunkempfänger
EP2747314A1 (fr) 2012-12-19 2014-06-25 Nxp B.V. Système permettant de mélanger des signaux

Also Published As

Publication number Publication date
DE10103400A1 (de) 2002-08-14
BR0200175A (pt) 2002-10-22
EP1227608A3 (fr) 2003-01-02
EP1227608B1 (fr) 2011-05-11
JP4002110B2 (ja) 2007-10-31
JP2002261635A (ja) 2002-09-13

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