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GB201001190D0 - Method and apparatus to reduce feedback between handsets in a communication system - Google Patents

Method and apparatus to reduce feedback between handsets in a communication system

Info

Publication number
GB201001190D0
GB201001190D0 GBGB1001190.6A GB201001190A GB201001190D0 GB 201001190 D0 GB201001190 D0 GB 201001190D0 GB 201001190 A GB201001190 A GB 201001190A GB 201001190 D0 GB201001190 D0 GB 201001190D0
Authority
GB
United Kingdom
Prior art keywords
handsets
communication system
reduce feedback
feedback
reduce
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Withdrawn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
GBGB1001190.6A
Other versions
GB2477156A (en
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.)
IML Ltd
Original Assignee
IML Ltd
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 IML Ltd filed Critical IML Ltd
Priority to GB1001190A priority Critical patent/GB2477156A/en
Publication of GB201001190D0 publication Critical patent/GB201001190D0/en
Priority to PCT/GB2011/000093 priority patent/WO2011089403A2/en
Publication of GB2477156A publication Critical patent/GB2477156A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/15—Conference systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
    • 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
    • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
    • H04M1/6041—Portable telephones adapted for handsfree use
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
GB1001190A 2010-01-25 2010-01-25 Reducing feedback between adjacent handsets in a communication system Withdrawn GB2477156A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1001190A GB2477156A (en) 2010-01-25 2010-01-25 Reducing feedback between adjacent handsets in a communication system
PCT/GB2011/000093 WO2011089403A2 (en) 2010-01-25 2011-01-25 Method and system to reduce feedback between handsets in a communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1001190A GB2477156A (en) 2010-01-25 2010-01-25 Reducing feedback between adjacent handsets in a communication system

Publications (2)

Publication Number Publication Date
GB201001190D0 true GB201001190D0 (en) 2010-03-10
GB2477156A GB2477156A (en) 2011-07-27

Family

ID=42046037

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1001190A Withdrawn GB2477156A (en) 2010-01-25 2010-01-25 Reducing feedback between adjacent handsets in a communication system

Country Status (2)

Country Link
GB (1) GB2477156A (en)
WO (1) WO2011089403A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160142875A1 (en) * 2014-11-14 2016-05-19 Qualcomm Incorporated Location aware personal communication device enabled public addressing (pa) system
US11019442B2 (en) 2016-07-08 2021-05-25 Hewlett-Packard Development Company, L.P. Muting microphones of physically colocated devices
CN108551534B (en) * 2018-03-13 2020-02-11 维沃移动通信有限公司 Method and device for multi-terminal voice call
CN110035372B (en) * 2019-04-24 2021-01-26 广州视源电子科技股份有限公司 Output control method, device, sound reinforcement system and computer equipment of sound reinforcement system
TWI829282B (en) * 2022-08-11 2024-01-11 明基電通股份有限公司 Multimedia system

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5575002A (en) * 1994-10-31 1996-11-12 Motorola, Inc. Method for muting a radio
GB2350969B (en) * 1999-06-07 2003-11-05 Ericsson Telefon Ab L M Loudspeaker volume range control
US6741874B1 (en) * 2000-04-18 2004-05-25 Motorola, Inc. Method and apparatus for reducing echo feedback in a communication system
US6952471B1 (en) * 2000-06-09 2005-10-04 Agere Systems Inc. Handset proximity muting
US6662027B2 (en) * 2001-03-16 2003-12-09 Motorola, Inc. Method of arbitrating speakerphone operation in a portable communication device for eliminating false arbitration due to echo
FR2841721B1 (en) * 2002-06-28 2004-08-20 France Telecom ECHO PROCESSING DEVICE FOR SINGLE-CHANNEL OR MULTI-CHANNEL COMMUNICATION SYSTEM
GB2425442B (en) 2002-08-15 2007-03-21 Iml Ltd Translation System
JP4149456B2 (en) * 2005-04-27 2008-09-10 株式会社第一興商 Howling prevention method, wireless microphone loudspeaker, karaoke equipment
US20090253418A1 (en) * 2005-06-30 2009-10-08 Jorma Makinen System for conference call and corresponding devices, method and program products
GB2466454B (en) * 2008-12-18 2011-04-13 Motorola Inc Method and system for reducing howling in a half-duplex communication system

Also Published As

Publication number Publication date
GB2477156A (en) 2011-07-27
WO2011089403A2 (en) 2011-07-28
WO2011089403A3 (en) 2011-12-08

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)