CN101133655B - 用于音调检测的可调谐滤波器 - Google Patents
用于音调检测的可调谐滤波器 Download PDFInfo
- Publication number
- CN101133655B CN101133655B CN200680006843.6A CN200680006843A CN101133655B CN 101133655 B CN101133655 B CN 101133655B CN 200680006843 A CN200680006843 A CN 200680006843A CN 101133655 B CN101133655 B CN 101133655B
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- CN
- China
- Prior art keywords
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- filter
- component
- filtering
- calculating
- 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 - Fee Related
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/46—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies comprising means for distinguishing between a signalling current of predetermined frequency and a complex current containing that frequency, e.g. speech current
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Circuits Of Receivers In General (AREA)
- Noise Elimination (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Measurement Of Radiation (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
Claims (10)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0504552.1 | 2005-03-04 | ||
GBGB0504552.1A GB0504552D0 (en) | 2005-03-04 | 2005-03-04 | Signal detection techniques |
PCT/GB2006/000686 WO2006092571A1 (en) | 2005-03-04 | 2006-02-27 | Tunable filter for tone detection |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101133655A CN101133655A (zh) | 2008-02-27 |
CN101133655B true CN101133655B (zh) | 2015-09-02 |
Family
ID=34451842
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN200680006843.6A Expired - Fee Related CN101133655B (zh) | 2005-03-04 | 2006-02-27 | 用于音调检测的可调谐滤波器 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8270458B2 (zh) |
EP (1) | EP1854306B1 (zh) |
CN (1) | CN101133655B (zh) |
GB (1) | GB0504552D0 (zh) |
TW (1) | TWI363567B (zh) |
WO (1) | WO2006092571A1 (zh) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7590419B2 (en) * | 2006-05-12 | 2009-09-15 | Freescale Semiconductor, Inc. | Frequency correction channel burst detector in a GSM/EDGE communication system |
US8457301B2 (en) * | 2008-06-30 | 2013-06-04 | Freescale Semiconductor, Inc. | Multi-frequency tone detector |
US8300749B2 (en) * | 2008-12-19 | 2012-10-30 | Alcatel Lucent | Method, apparatus and system for frequency synchronization between devices communicating over a packet network |
US8156805B2 (en) * | 2009-04-15 | 2012-04-17 | Freescale Semiconductor, Inc. | MEMS inertial sensor with frequency control and method |
US8578775B2 (en) * | 2010-02-08 | 2013-11-12 | Freescale Semiconductor, Inc. | Generation, injection and use of pilot tones for gyro system characterization |
JP5605158B2 (ja) * | 2010-10-19 | 2014-10-15 | アイコム株式会社 | Ctcss用のトーン信号回路およびそれを用いる無線受信機 |
US8576743B2 (en) | 2010-12-28 | 2013-11-05 | Qualcomm Incorporated | Apparatus and methods for estimating an unknown frequency error of a tone signal |
US9667458B1 (en) * | 2015-06-03 | 2017-05-30 | Qualcomm Incorporated | Feed-forward phase tracking |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5353346A (en) * | 1992-12-22 | 1994-10-04 | Mpr Teltech, Limited | Multi-frequency signal detector and classifier |
US5477465A (en) * | 1993-08-31 | 1995-12-19 | Talx Corporation | Multi-frequency receiver with arbitrary center frequencies |
CN1322081A (zh) * | 2000-03-17 | 2001-11-14 | 米特尔公司 | 多频音检测器 |
US6771767B1 (en) * | 1999-01-05 | 2004-08-03 | Legerity, Inc. | Signal detector with coefficient swapping transform unit |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5457818A (en) | 1990-06-08 | 1995-10-10 | Butler; James A. | Detection threshold adjustment method for linear matched filter receivers |
US5241688A (en) * | 1990-12-17 | 1993-08-31 | Motorola, Inc. | Frequency and time slot synchronizaton using adaptive filtering |
EP0548438A1 (en) * | 1991-12-20 | 1993-06-30 | International Business Machines Corporation | A method for detecting dual tone multi-frequency signals and device for implementing said method |
US5930308A (en) | 1996-02-01 | 1999-07-27 | Airnet Communications Corp. | Method and apparatus for detecting signaling tones in wide-band digitized cellular-telephone signals |
US5734577A (en) | 1996-03-11 | 1998-03-31 | Lucent Technologies Inc. | Adaptive IIR multitone detector |
KR100193837B1 (ko) | 1996-08-24 | 1999-06-15 | 윤종용 | 시분할다윈접속 디지탈 이동통신 시스템의 주파수 교정 버스트 검출방법 |
US6674855B1 (en) * | 1999-10-06 | 2004-01-06 | Comverse Ltd. | High performance multifrequency signal detection |
JP2002044560A (ja) * | 2000-07-26 | 2002-02-08 | Mitsubishi Electric Corp | 受信装置 |
KR100644271B1 (ko) * | 2004-07-16 | 2006-11-10 | 한국전자통신연구원 | 군지연 등화된 다중 통과 대역 필터 구현 방법 |
-
2005
- 2005-03-04 GB GBGB0504552.1A patent/GB0504552D0/en not_active Ceased
-
2006
- 2006-02-27 CN CN200680006843.6A patent/CN101133655B/zh not_active Expired - Fee Related
- 2006-02-27 EP EP06709911.9A patent/EP1854306B1/en not_active Not-in-force
- 2006-02-27 WO PCT/GB2006/000686 patent/WO2006092571A1/en not_active Application Discontinuation
- 2006-03-03 TW TW095107190A patent/TWI363567B/zh not_active IP Right Cessation
-
2007
- 2007-07-24 US US11/782,242 patent/US8270458B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5353346A (en) * | 1992-12-22 | 1994-10-04 | Mpr Teltech, Limited | Multi-frequency signal detector and classifier |
US5477465A (en) * | 1993-08-31 | 1995-12-19 | Talx Corporation | Multi-frequency receiver with arbitrary center frequencies |
US6771767B1 (en) * | 1999-01-05 | 2004-08-03 | Legerity, Inc. | Signal detector with coefficient swapping transform unit |
CN1322081A (zh) * | 2000-03-17 | 2001-11-14 | 米特尔公司 | 多频音检测器 |
Also Published As
Publication number | Publication date |
---|---|
EP1854306B1 (en) | 2018-06-13 |
WO2006092571A8 (en) | 2006-12-21 |
TWI363567B (en) | 2012-05-01 |
TW200706015A (en) | 2007-02-01 |
GB0504552D0 (en) | 2005-04-13 |
CN101133655A (zh) | 2008-02-27 |
WO2006092571A1 (en) | 2006-09-08 |
US20070265791A1 (en) | 2007-11-15 |
US8270458B2 (en) | 2012-09-18 |
EP1854306A1 (en) | 2007-11-14 |
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C41 | Transfer of patent application or patent right or utility model | ||
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Effective date of registration: 20090327 Address after: Cayman Islands, Grand Cayman Applicant after: Cayman Morningstar Semiconductor Co-applicant after: MSTAR FRANCE S.A.S. Co-applicant after: Mstar Semiconductor,Inc. Address before: Cayman Islands Grand Cayman Applicant before: Cayman Morningstar Semiconductor Effective date of registration: 20090327 Address after: Cayman Islands Grand Cayman Applicant after: Cayman Morningstar Semiconductor Address before: Hertfordshire Applicant before: TTPCOM Ltd. |
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Owner name: KAIMAN CHENXING SEMICONDUCTOR CO., LTD. Free format text: FORMER OWNER: TTPCOM CO., LTD. Effective date: 20090327 |
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 Termination date: 20190227 |
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