EP1227608A3 - Method for switching a broadcast receiver to a different broadcast transmission with the same audio content - Google Patents

Method for switching a broadcast receiver to a different broadcast transmission with the same audio content Download PDF

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Publication number
EP1227608A3
EP1227608A3 EP01126167A EP01126167A EP1227608A3 EP 1227608 A3 EP1227608 A3 EP 1227608A3 EP 01126167 A EP01126167 A EP 01126167A EP 01126167 A EP01126167 A EP 01126167A EP 1227608 A3 EP1227608 A3 EP 1227608A3
Authority
EP
European Patent Office
Prior art keywords
switching
time offset
determined
audio
audio 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
Other languages
German (de)
French (fr)
Other versions
EP1227608B1 (en
EP1227608A2 (en
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/en
Publication of EP1227608A3 publication Critical patent/EP1227608A3/en
Application granted granted Critical
Publication of EP1227608B1 publication Critical patent/EP1227608B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H04H20/20—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]

Abstract

Es wird ein Verfahren zur Audioserviceumschaltung bei einem Rundfunkempfänger vorgeschlagen, wobei ein Zeitversatz zwischen äquivalenten Audioservices bestimmt wird und dieser Zeitversatz bei der Umschaltung berücksichtigt wird, so daß für einen Zuhörer keine merklichen Umschalteffekte auftreten. Der Zeitversatz wird entweder durch einen Vergleich von Sprachpausen oder durch einen Vergleich einer gemittelten Kurzzeitleistung der verschiedenen Audioservices bestimmt. Die Signale des Audioservices, der zeitlich vorausläuft, werden für die Umschaltung zwischengespeichert. Durch die Verwendung eines asynchronen Abtastratenumsetzers kann eine Verzögerung entsprechend dem Zeitversatz zwischen den übertragenen Audioservices eingestellt werden. Aus der Kurzzeitleistung kann weiterhin ein Lautstärkefaktor zwischen den übertragenen Audioservices ermittelt werden, um die Lautstärke bei der Umschaltung anzupassen. Bei der Umschaltung wird zunächst auf Mono geschaltet und dann langsam auf Stereo.

Figure 00000001
A method for audio service switching in a radio receiver is proposed, wherein a time offset between equivalent audio services is determined and this time offset is taken into account when switching over, so that no noticeable switching effects occur for a listener. The time offset is determined either by a comparison of speech pauses or by a comparison of an average short-term performance of the different audio services. The signals of the audio service that is running ahead of time are buffered for the switchover. By using an asynchronous sample rate converter, a delay can be set according to the time offset between the audio services being transmitted. A volume factor between the transmitted audio services can also be determined from the short-term power in order to adjust the volume when switching. When switching over, the switch is first made to mono and then slowly to stereo.
Figure 00000001
EP20010126167 2001-01-26 2001-11-03 Method for switching a broadcast receiver to a different broadcast transmission with the same audio content Expired - Lifetime EP1227608B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001103400 DE10103400A1 (en) 2001-01-26 2001-01-26 Audio service switching method for a radio receiver
DE10103400 2001-01-26

Publications (3)

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

Family

ID=7671765

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010126167 Expired - Lifetime EP1227608B1 (en) 2001-01-26 2001-11-03 Method for switching a broadcast receiver to a different broadcast transmission with the same audio content

Country Status (4)

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

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006115200A (en) * 2004-10-14 2006-04-27 Fujitsu Ten Ltd Receiver
DE102005041653A1 (en) * 2005-09-02 2007-03-08 Robert Bosch Gmbh Method and apparatus for switching between the outputs of multiple audio signals from different broadcast sources
JP4845709B2 (en) * 2006-12-20 2011-12-28 アルパイン株式会社 Audio-visual equipment and audio / video frame creation method thereof
DE102008002689A1 (en) 2008-06-26 2009-12-31 Robert Bosch Gmbh Apparatus and method for adjusting the reproduction spectrum of two audio sources
DE112009002283B4 (en) * 2008-11-20 2012-12-27 Mitsubishi Electric Corp. Radio receiver
EP2355381A1 (en) * 2009-12-09 2011-08-10 Alpine Electronics, Inc. Audio processing device and method for processing audio signals
JP5540953B2 (en) * 2010-07-12 2014-07-02 パナソニック株式会社 Clock regeneration circuit and digital audio playback apparatus using the same
EP2536043A1 (en) 2011-06-14 2012-12-19 Panasonic Automotive Systems Europe GmbH Optimized delay detection of simulcast broadcast signals
CN102255680B (en) * 2011-07-12 2013-01-30 北京海尔集成电路设计有限公司 Method and device for automatically switching digital audio broadcasting (DAB) signal and frequency modulation (FM) signal
JP5919500B2 (en) * 2011-12-28 2016-05-18 パナソニックＩｐマネジメント株式会社 Clock regeneration circuit and digital audio playback device
DE102012012272A1 (en) 2012-06-21 2013-01-17 Daimler Ag Method for uninterrupted changeover of digitally transmitted audio services in radio device e.g. broadcast receiver, involves delaying analog transmitted audio service to time delay between previous and last audio services
EP2747314A1 (en) * 2012-12-19 2014-06-25 Nxp B.V. A system for blending signals
SG11202111519XA (en) * 2017-10-24 2021-11-29 Skywave Networks Llc Clock synchronization when switching between broadcast and data transmission modes

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993009615A1 (en) * 1991-11-01 1993-05-13 Telefunken Fernseh Und Rundfunk Gmbh Radio transmission system and radio receiver
EP0588741A1 (en) * 1992-09-18 1994-03-23 France Telecom System for broadcasting digital signals with active time diversity and corresponding transmitter and receiver
EP0863632A2 (en) * 1997-03-04 1998-09-09 Sony Corporation Apparatus for receiving audio broadcast signals
EP0865175A2 (en) * 1997-01-24 1998-09-16 Kabushiki Kaisha Kenwood Radio receiver capable of receiving signals from a plurality of trnsmission systyms such as Digital Audio Broadcast (DAB) and Radio Data System (RDS)
WO1999020007A1 (en) * 1997-10-09 1999-04-22 Usa Digital Radio, Inc. A system and method for mitigating intermittent interruptions in an audio radio broadcast system
EP0954131A2 (en) * 1998-04-28 1999-11-03 Pioneer Electronic Corporation Broadcast receiver comprising both a receiver for Digital Audio Broadcasts as well as an FM broadcast receiver with a Radio Data System decoder
EP1022873A2 (en) * 1999-01-22 2000-07-26 Sony Corporation Receiver for receiving both Digital Audio Broadcasts (DAB) as well as frequency modulated (FM) broadcasts comprising supplementary information
WO2000051272A1 (en) * 1999-02-24 2000-08-31 Usa Digital Radio, Inc. Audio blend method, transmitter and receiver for am and fm in band on channel digital audio broadcasting
DE19857888A1 (en) * 1998-12-17 2000-10-19 Becker Gmbh Digital audio broadcasting receiver controls DAB and RDS for receiving units so that they receive programs with corresponding program identifier with switch which is changed over through control unit quality

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4103064A1 (en) * 1991-02-01 1992-08-13 Blaupunkt Werke Gmbh Radio data signal receiver esp. for car
DE4103061C2 (en) * 1991-02-01 1995-04-13 Blaupunkt Werke Gmbh Radio receiver

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993009615A1 (en) * 1991-11-01 1993-05-13 Telefunken Fernseh Und Rundfunk Gmbh Radio transmission system and radio receiver
EP0588741A1 (en) * 1992-09-18 1994-03-23 France Telecom System for broadcasting digital signals with active time diversity and corresponding transmitter and receiver
EP0865175A2 (en) * 1997-01-24 1998-09-16 Kabushiki Kaisha Kenwood Radio receiver capable of receiving signals from a plurality of trnsmission systyms such as Digital Audio Broadcast (DAB) and Radio Data System (RDS)
EP0863632A2 (en) * 1997-03-04 1998-09-09 Sony Corporation Apparatus for receiving audio broadcast signals
WO1999020007A1 (en) * 1997-10-09 1999-04-22 Usa Digital Radio, Inc. A system and method for mitigating intermittent interruptions in an audio radio broadcast system
EP0954131A2 (en) * 1998-04-28 1999-11-03 Pioneer Electronic Corporation Broadcast receiver comprising both a receiver for Digital Audio Broadcasts as well as an FM broadcast receiver with a Radio Data System decoder
DE19857888A1 (en) * 1998-12-17 2000-10-19 Becker Gmbh Digital audio broadcasting receiver controls DAB and RDS for receiving units so that they receive programs with corresponding program identifier with switch which is changed over through control unit quality
EP1022873A2 (en) * 1999-01-22 2000-07-26 Sony Corporation Receiver for receiving both Digital Audio Broadcasts (DAB) as well as frequency modulated (FM) broadcasts comprising supplementary information
WO2000051272A1 (en) * 1999-02-24 2000-08-31 Usa Digital Radio, Inc. Audio blend method, transmitter and receiver for am and fm in band on channel digital audio broadcasting

Also Published As

Publication number Publication date
EP1227608B1 (en) 2011-05-11
BR0200175A (en) 2002-10-22
EP1227608A2 (en) 2002-07-31
JP2002261635A (en) 2002-09-13
JP4002110B2 (en) 2007-10-31
DE10103400A1 (en) 2002-08-14

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