GB2407744A - System and method for speakerphone operation in a communications device - Google Patents

System and method for speakerphone operation in a communications device Download PDF

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Publication number
GB2407744A
GB2407744A GB0502502A GB0502502A GB2407744A GB 2407744 A GB2407744 A GB 2407744A GB 0502502 A GB0502502 A GB 0502502A GB 0502502 A GB0502502 A GB 0502502A GB 2407744 A GB2407744 A GB 2407744A
Authority
GB
United Kingdom
Prior art keywords
communications device
channel
path
speakerphone operation
criteria
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
GB0502502A
Other versions
GB0502502D0 (en
GB2407744B (en
Inventor
Pratik Desai
Ali Behboodian
Chin Pan Wong
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of GB0502502D0 publication Critical patent/GB0502502D0/en
Publication of GB2407744A publication Critical patent/GB2407744A/en
Application granted granted Critical
Publication of GB2407744B publication Critical patent/GB2407744B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/082—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using echo cancellers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephone Function (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

The invention provides a cellular telephone or other communications device with intelligence to manage speakerphone operation to more nearly approximate normal conversation, even when using a one-way only transmission mode. The microphone path (128) and speaker path (130) maybe continuously monitored using dual voice activity detectors (114, 118) to assess the energy and other characteristics of each channel, and switch between one or the other depending on dynamic criteria. In noisy environments, a hangtime may be applied before permitting switching to avoid premature dropouts. Other criteria used to trigger the seizure of the channel may be adjusted, such as to eliminate a lower threshold below which the speaker path (130) switches out automatically.

Description

GB 2407744 A continuation (72) Inventor(s): Pratik Desai All Behboodian
Chin Pan Wang (74) Agent and/or Address for Service: Boult Wade Tennant Verulam Gardens, 70 Gray's Inn Road, LONDON, WC1X BET, United Kingdom
GB0502502A 2002-07-26 2003-07-24 System and method for speakerphone operation in a communications device Expired - Fee Related GB2407744B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US39857802P 2002-07-26 2002-07-26
PCT/US2003/023113 WO2004012426A1 (en) 2002-07-26 2003-07-24 System and method for speakerphone operation in a communications device

Publications (3)

Publication Number Publication Date
GB0502502D0 GB0502502D0 (en) 2005-03-16
GB2407744A true GB2407744A (en) 2005-05-04
GB2407744B GB2407744B (en) 2006-06-07

Family

ID=31188421

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0502502A Expired - Fee Related GB2407744B (en) 2002-07-26 2003-07-24 System and method for speakerphone operation in a communications device

Country Status (6)

Country Link
JP (1) JP2005534258A (en)
KR (1) KR100736246B1 (en)
CN (1) CN1692618A (en)
AU (1) AU2003256725A1 (en)
GB (1) GB2407744B (en)
WO (1) WO2004012426A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100720589B1 (en) * 2005-08-26 2007-05-22 엘지전자 주식회사 System and Method for controlling speaker-phone using asynchronous HDLC
KR101714546B1 (en) * 2011-01-11 2017-03-10 삼성전자주식회사 Device and method for processing voice communication in mobile terminal
CN104093178A (en) * 2013-04-01 2014-10-08 联想(北京)有限公司 Communication method and mobile terminal
US20150139428A1 (en) * 2013-11-20 2015-05-21 Knowles IPC (M) Snd. Bhd. Apparatus with a speaker used as second microphone

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6570985B1 (en) * 1998-01-09 2003-05-27 Ericsson Inc. Echo canceler adaptive filter optimization
US6611693B2 (en) * 1996-02-23 2003-08-26 Nokia Mobile Phones Ltd. Multi-service mobile station

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6223154B1 (en) 1998-07-31 2001-04-24 Motorola, Inc. Using vocoded parameters in a staggered average to provide speakerphone operation based on enhanced speech activity thresholds

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6611693B2 (en) * 1996-02-23 2003-08-26 Nokia Mobile Phones Ltd. Multi-service mobile station
US6570985B1 (en) * 1998-01-09 2003-05-27 Ericsson Inc. Echo canceler adaptive filter optimization

Also Published As

Publication number Publication date
KR100736246B1 (en) 2007-07-06
JP2005534258A (en) 2005-11-10
WO2004012426A1 (en) 2004-02-05
CN1692618A (en) 2005-11-02
AU2003256725A1 (en) 2004-02-16
KR20050029280A (en) 2005-03-24
GB0502502D0 (en) 2005-03-16
GB2407744B (en) 2006-06-07

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20110127 AND 20110202

732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20170831 AND 20170906

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20210724