DE60224985D1 - Verfahren und Vorrichtung zum Unterbinden von Einschaltgeräuschen am Ausgang eines Funktelefonhörers - Google Patents
Verfahren und Vorrichtung zum Unterbinden von Einschaltgeräuschen am Ausgang eines FunktelefonhörersInfo
- Publication number
- DE60224985D1 DE60224985D1 DE60224985T DE60224985T DE60224985D1 DE 60224985 D1 DE60224985 D1 DE 60224985D1 DE 60224985 T DE60224985 T DE 60224985T DE 60224985 T DE60224985 T DE 60224985T DE 60224985 D1 DE60224985 D1 DE 60224985D1
- Authority
- DE
- Germany
- Prior art keywords
- noise
- output
- radiotelephone handset
- suppressing switch
- suppressing
- 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.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
- H03F1/305—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in case of switching on or off of a power supply
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
- H03G3/348—Muting in response to a mechanical action or to power supply variations, e.g. during tuning; Click removal circuits
-
- 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
- H04M1/6016—Substation equipment, e.g. for use by subscribers including speech amplifiers in the receiver circuit
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Circuit For Audible Band Transducer (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02076863A EP1361656B1 (de) | 2002-05-10 | 2002-05-10 | Verfahren und Vorrichtung zum Unterbinden von Einschaltgeräuschen am Ausgang eines Funktelefonhörers |
Publications (2)
Publication Number | Publication Date |
---|---|
DE60224985D1 true DE60224985D1 (de) | 2008-03-27 |
DE60224985T2 DE60224985T2 (de) | 2009-01-29 |
Family
ID=29225710
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE60224985T Expired - Lifetime DE60224985T2 (de) | 2002-05-10 | 2002-05-10 | Verfahren und Vorrichtung zum Unterbinden von Einschaltgeräuschen am Ausgang eines Funktelefonhörers |
Country Status (3)
Country | Link |
---|---|
US (1) | US7084701B2 (de) |
EP (1) | EP1361656B1 (de) |
DE (1) | DE60224985T2 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI241821B (en) * | 2003-04-15 | 2005-10-11 | Mobitek Comm Corp | Mobile phone architecture for acquiring or viewing image and simultaneously functioning for calling services and design method thereof |
TWI235543B (en) * | 2004-05-17 | 2005-07-01 | Analog And Power Electronics C | Amplifier circuit that prohibits instantaneous turn-on pop and method thereof |
KR100702321B1 (ko) * | 2005-09-06 | 2007-03-30 | 엘지전자 주식회사 | 이동통신단말기의 코덱 초기화 잡음 제거 방법 및 이를위한 이동통신단말기 |
WO2007053068A1 (en) * | 2005-10-31 | 2007-05-10 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for repeating a signal in a wireless communication system |
KR100678168B1 (ko) * | 2006-02-24 | 2007-02-02 | 삼성전자주식회사 | 무음 모드 진입 방법 및 이를 위한 이동 통신 단말기 |
GB2440188B (en) * | 2006-07-14 | 2011-06-08 | Wolfson Ltd | Amplifier Circuits, Methods of Starting and Stopping Amplifier Circuits |
KR100810853B1 (ko) * | 2006-08-25 | 2008-03-06 | 삼성전자주식회사 | 오디오 출력장치에서 팝 노이즈를 방지하기 위한 장치 및방법 |
US8121556B2 (en) * | 2007-07-17 | 2012-02-21 | Audiovox Corporation | Active load isolator and wireless speaker for mixed signal environments |
US9014396B2 (en) * | 2008-01-31 | 2015-04-21 | Qualcomm Incorporated | System and method of reducing click and pop noise in audio playback devices |
US9020165B2 (en) * | 2012-10-09 | 2015-04-28 | Silicon Laboratories Inc. | Pop/click noise reduction circuitry for power-up and power-down of audio output circuitry |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5199079A (en) * | 1991-05-21 | 1993-03-30 | Thomson Consumer Electronics, Inc. | Supply voltage responsive audible transient (POP) suppression arrangement |
EP0678975B1 (de) * | 1994-04-15 | 1997-10-08 | STMicroelectronics S.r.l. | Niederfrequenzverstärker |
US5537081A (en) * | 1995-01-31 | 1996-07-16 | National Semiconductor Corporation | No turn-on pop noise amplifier |
US5768601A (en) * | 1996-01-17 | 1998-06-16 | Compaq Computer Corporation | Apparatus for eliminating audio noise when power is cycled to a computer |
US6118336A (en) * | 1998-10-30 | 2000-09-12 | Intersil Corporation | Start-up circuit for self oscillating class D modulator |
US6734724B1 (en) * | 2000-10-06 | 2004-05-11 | Tropian, Inc. | Power control and modulation of switched-mode power amplifiers with one or more stages |
US6605991B2 (en) * | 2001-08-30 | 2003-08-12 | Motorola, Inc. | Circuitry for creating a spectral null in a differential output switching amplifier and method therefor |
-
2002
- 2002-05-10 DE DE60224985T patent/DE60224985T2/de not_active Expired - Lifetime
- 2002-05-10 EP EP02076863A patent/EP1361656B1/de not_active Expired - Lifetime
- 2002-09-17 US US10/245,108 patent/US7084701B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20040204162A1 (en) | 2004-10-14 |
EP1361656A1 (de) | 2003-11-12 |
EP1361656B1 (de) | 2008-02-13 |
DE60224985T2 (de) | 2009-01-29 |
US7084701B2 (en) | 2006-08-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |