PL2449554T3 - Kodery rozszerzania szerokości pasma, dekoder rozszerzania szerokości pasma oraz wokoder fazowy, jak również odpowiadające im sposoby oraz program komputerowy - Google Patents
Kodery rozszerzania szerokości pasma, dekoder rozszerzania szerokości pasma oraz wokoder fazowy, jak również odpowiadające im sposoby oraz program komputerowyInfo
- Publication number
- PL2449554T3 PL2449554T3 PL10725483T PL10725483T PL2449554T3 PL 2449554 T3 PL2449554 T3 PL 2449554T3 PL 10725483 T PL10725483 T PL 10725483T PL 10725483 T PL10725483 T PL 10725483T PL 2449554 T3 PL2449554 T3 PL 2449554T3
- Authority
- PL
- Poland
- Prior art keywords
- bandwidth extension
- well
- computer program
- corresponding methods
- encoders
- Prior art date
Links
- 238000004590 computer program Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
- G10L19/0204—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders using subband decomposition
- G10L19/0208—Subband vocoders
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
- G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
- G10L19/16—Vocoder architecture
- G10L19/18—Vocoders using multiple modes
- G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/04—Time compression or expansion
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
- G10L19/16—Vocoder architecture
- G10L19/18—Vocoders using multiple modes
- G10L19/20—Vocoders using multiple modes using sound class specific coding, hybrid encoders or object based coding
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Computational Linguistics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Human Computer Interaction (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Quality & Reliability (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Stereophonic System (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US22144209P | 2009-06-29 | 2009-06-29 | |
| EP10153530A EP2273493B1 (en) | 2009-06-29 | 2010-02-12 | Bandwidth extension encoding and decoding |
| EP10725483.1A EP2449554B1 (en) | 2009-06-29 | 2010-06-24 | Bandwidth extension encoders, bandwidth extension decoder and phase vocoder, as well as corresponding methods and computer program |
| PCT/EP2010/059025 WO2011000780A1 (en) | 2009-06-29 | 2010-06-24 | Bandwidth extension encoder, bandwidth extension decoder and phase vocoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL2449554T3 true PL2449554T3 (pl) | 2015-08-31 |
Family
ID=42537947
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL10153530T PL2273493T3 (pl) | 2009-06-29 | 2010-02-12 | Kodowanie i dekodowanie z rozszerzaniem szerokości pasma |
| PL10725483T PL2449554T3 (pl) | 2009-06-29 | 2010-06-24 | Kodery rozszerzania szerokości pasma, dekoder rozszerzania szerokości pasma oraz wokoder fazowy, jak również odpowiadające im sposoby oraz program komputerowy |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL10153530T PL2273493T3 (pl) | 2009-06-29 | 2010-02-12 | Kodowanie i dekodowanie z rozszerzaniem szerokości pasma |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US8606586B2 (pl) |
| EP (2) | EP2273493B1 (pl) |
| JP (1) | JP5329714B2 (pl) |
| KR (1) | KR101425157B1 (pl) |
| CN (1) | CN102473414B (pl) |
| AU (1) | AU2010268160B2 (pl) |
| BR (1) | BRPI1010165B1 (pl) |
| CA (2) | CA2766573C (pl) |
| ES (2) | ES2400661T3 (pl) |
| MX (1) | MX2011013610A (pl) |
| PL (2) | PL2273493T3 (pl) |
| RU (1) | RU2563164C2 (pl) |
| WO (1) | WO2011000780A1 (pl) |
Families Citing this family (43)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL2234103T3 (pl) | 2009-03-26 | 2012-02-29 | Fraunhofer Ges Forschung | Urządzenie i sposób manipulacji sygnałem audio |
| US9093080B2 (en) | 2010-06-09 | 2015-07-28 | Panasonic Intellectual Property Corporation Of America | Bandwidth extension method, bandwidth extension apparatus, program, integrated circuit, and audio decoding apparatus |
| KR101826331B1 (ko) * | 2010-09-15 | 2018-03-22 | 삼성전자주식회사 | 고주파수 대역폭 확장을 위한 부호화/복호화 장치 및 방법 |
| JP5704397B2 (ja) * | 2011-03-31 | 2015-04-22 | ソニー株式会社 | 符号化装置および方法、並びにプログラム |
| US9177570B2 (en) * | 2011-04-15 | 2015-11-03 | St-Ericsson Sa | Time scaling of audio frames to adapt audio processing to communications network timing |
| WO2013079524A2 (en) * | 2011-11-30 | 2013-06-06 | Dolby International Ab | Enhanced chroma extraction from an audio codec |
| TWI591620B (zh) | 2012-03-21 | 2017-07-11 | 三星電子股份有限公司 | 產生高頻雜訊的方法 |
| CN104221082B (zh) * | 2012-03-29 | 2017-03-08 | 瑞典爱立信有限公司 | 谐波音频信号的带宽扩展 |
| CN103368682B (zh) * | 2012-03-29 | 2016-12-07 | 华为技术有限公司 | 信号编码和解码的方法和设备 |
| EP2709106A1 (en) * | 2012-09-17 | 2014-03-19 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for generating a bandwidth extended signal from a bandwidth limited audio signal |
| EP2720222A1 (en) | 2012-10-10 | 2014-04-16 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for efficient synthesis of sinusoids and sweeps by employing spectral patterns |
| RU2641461C2 (ru) * | 2013-01-29 | 2018-01-17 | Фраунхофер-Гезелльшафт Цур Фердерунг Дер Ангевандтен Форшунг Е.Ф. | Аудиокодер, аудиодекодер, способ обеспечения кодированной аудиоинформации, способ обеспечения декодированной аудиоинформации, компьютерная программа и кодированное представление с использованием сигнально-адаптивного расширения полосы пропускания |
| SG10201608613QA (en) * | 2013-01-29 | 2016-12-29 | Fraunhofer Ges Forschung | Decoder For Generating A Frequency Enhanced Audio Signal, Method Of Decoding, Encoder For Generating An Encoded Signal And Method Of Encoding Using Compact Selection Side Information |
| MY172161A (en) | 2013-01-29 | 2019-11-15 | Fraunhofer Ges Forschung | Apparatus and method for generating a frequency enhanced signal using shaping of the enhancement signal |
| US9319510B2 (en) * | 2013-02-15 | 2016-04-19 | Qualcomm Incorporated | Personalized bandwidth extension |
| EP2830054A1 (en) | 2013-07-22 | 2015-01-28 | Fraunhofer Gesellschaft zur Förderung der angewandten Forschung e.V. | Audio encoder, audio decoder and related methods using two-channel processing within an intelligent gap filling framework |
| JP6396459B2 (ja) * | 2013-10-31 | 2018-09-26 | フラウンホーファー−ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン | 周波数領域における時間的予備整形雑音の挿入によるオーディオ帯域幅拡張 |
| EP2881943A1 (en) | 2013-12-09 | 2015-06-10 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for decoding an encoded audio signal with low computational resources |
| CN103714822B (zh) * | 2013-12-27 | 2017-01-11 | 广州华多网络科技有限公司 | 基于silk编解码器的子带编解码方法及装置 |
| KR102356012B1 (ko) | 2013-12-27 | 2022-01-27 | 소니그룹주식회사 | 복호화 장치 및 방법, 및 프로그램 |
| US10410645B2 (en) | 2014-03-03 | 2019-09-10 | Samsung Electronics Co., Ltd. | Method and apparatus for high frequency decoding for bandwidth extension |
| KR102386736B1 (ko) * | 2014-03-03 | 2022-04-14 | 삼성전자주식회사 | 대역폭 확장을 위한 고주파 복호화 방법 및 장치 |
| KR102653849B1 (ko) | 2014-03-24 | 2024-04-02 | 삼성전자주식회사 | 고대역 부호화방법 및 장치와 고대역 복호화 방법 및 장치 |
| EP3128513B1 (en) * | 2014-03-31 | 2019-05-15 | Fraunhofer Gesellschaft zur Förderung der Angewand | Encoder, decoder, encoding method, decoding method, and program |
| KR102191506B1 (ko) * | 2014-05-14 | 2020-12-16 | 삼성전자주식회사 | 통신 시스템에서 송신 신호 처리 장치 및 방법 |
| CN110083221A (zh) * | 2014-06-09 | 2019-08-02 | 威盛电子股份有限公司 | 电子装置及音频播放方法 |
| EP2980794A1 (en) | 2014-07-28 | 2016-02-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Audio encoder and decoder using a frequency domain processor and a time domain processor |
| EP2980795A1 (en) | 2014-07-28 | 2016-02-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Audio encoding and decoding using a frequency domain processor, a time domain processor and a cross processor for initialization of the time domain processor |
| JP2016038435A (ja) * | 2014-08-06 | 2016-03-22 | ソニー株式会社 | 符号化装置および方法、復号装置および方法、並びにプログラム |
| CN104269173B (zh) * | 2014-09-30 | 2018-03-13 | 武汉大学深圳研究院 | 切换模式的音频带宽扩展装置与方法 |
| WO2016142002A1 (en) | 2015-03-09 | 2016-09-15 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Audio encoder, audio decoder, method for encoding an audio signal and method for decoding an encoded audio signal |
| US10117247B2 (en) * | 2015-03-13 | 2018-10-30 | Futurewei Technologies, Inc. | Windowing methods for efficient channel aggregation and deaggregation |
| KR101642112B1 (ko) | 2015-10-29 | 2016-07-22 | 주식회사 님버스 | 이동통신망에서 실시간 멀티미디어를 송수신하기 위한 모뎀 본딩 시스템 및 방법 |
| US10504530B2 (en) | 2015-11-03 | 2019-12-10 | Dolby Laboratories Licensing Corporation | Switching between transforms |
| KR101688647B1 (ko) | 2016-04-04 | 2016-12-22 | 주식회사 님버스 | 이동통신망에서 실시간 저지연 전송을 위한 모뎀 본딩 시스템 및 방법 |
| RU169931U1 (ru) * | 2016-11-02 | 2017-04-06 | Акционерное Общество "Объединенные Цифровые Сети" | Устройство сжатия аудиосигнала для передачи по каналам распространения данных |
| CN110062945B (zh) * | 2016-12-02 | 2023-05-23 | 迪拉克研究公司 | 音频输入信号的处理 |
| US11771779B2 (en) | 2018-01-26 | 2023-10-03 | Hadasit Medical Research Services & Development Limited | Non-metallic magnetic resonance contrast agent |
| IL313348B2 (en) | 2018-04-25 | 2025-08-01 | Dolby Int Ab | Integration of high frequency reconstruction techniques with reduced post-processing delay |
| IL313391B2 (en) | 2018-04-25 | 2025-05-01 | Dolby Int Ab | Integrating high-frequency audio restoration techniques |
| WO2020094263A1 (en) * | 2018-11-05 | 2020-05-14 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and audio signal processor, for providing a processed audio signal representation, audio decoder, audio encoder, methods and computer programs |
| CN113593586B (zh) * | 2020-04-15 | 2025-01-10 | 华为技术有限公司 | 音频信号编码方法、解码方法、编码设备以及解码设备 |
| WO2025199960A1 (zh) * | 2024-03-29 | 2025-10-02 | 瑞声开泰声学科技(上海)有限公司 | 一种音频处理方法、电子设备及存储介质 |
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| US5455888A (en) | 1992-12-04 | 1995-10-03 | Northern Telecom Limited | Speech bandwidth extension method and apparatus |
| US5848391A (en) * | 1996-07-11 | 1998-12-08 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. | Method subband of coding and decoding audio signals using variable length windows |
| SE512719C2 (sv) * | 1997-06-10 | 2000-05-02 | Lars Gustaf Liljeryd | En metod och anordning för reduktion av dataflöde baserad på harmonisk bandbreddsexpansion |
| US6921740B1 (en) * | 1999-08-31 | 2005-07-26 | Mitsubishi Paper Miils Ltd. | Electron-receiving compound and thermal recording material |
| US6978236B1 (en) * | 1999-10-01 | 2005-12-20 | Coding Technologies Ab | Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching |
| US6704711B2 (en) * | 2000-01-28 | 2004-03-09 | Telefonaktiebolaget Lm Ericsson (Publ) | System and method for modifying speech signals |
| US6636830B1 (en) * | 2000-11-22 | 2003-10-21 | Vialta Inc. | System and method for noise reduction using bi-orthogonal modified discrete cosine transform |
| US20020128839A1 (en) * | 2001-01-12 | 2002-09-12 | Ulf Lindgren | Speech bandwidth extension |
| US6895375B2 (en) | 2001-10-04 | 2005-05-17 | At&T Corp. | System for bandwidth extension of Narrow-band speech |
| US7389226B2 (en) * | 2002-10-29 | 2008-06-17 | Ntt Docomo, Inc. | Optimized windows and methods therefore for gradient-descent based window optimization for linear prediction analysis in the ITU-T G.723.1 speech coding standard |
| CN1748247B (zh) * | 2003-02-11 | 2011-06-15 | 皇家飞利浦电子股份有限公司 | 音频编码 |
| EP1672618B1 (en) * | 2003-10-07 | 2010-12-15 | Panasonic Corporation | Method for deciding time boundary for encoding spectrum envelope and frequency resolution |
| EP1678617A4 (en) | 2003-10-08 | 2008-03-26 | Unisys Corp | COMPUTER SYSTEM PARAVIRTUALIZATION BY USING A HYPERVISOR IMPLEMENTED IN A PARTITION OF THE HOST SYSTEM |
| DE102004009954B4 (de) * | 2004-03-01 | 2005-12-15 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Vorrichtung und Verfahren zum Verarbeiten eines Multikanalsignals |
| US7953605B2 (en) * | 2005-10-07 | 2011-05-31 | Deepen Sinha | Method and apparatus for audio encoding and decoding using wideband psychoacoustic modeling and bandwidth extension |
| JP2007304258A (ja) * | 2006-05-10 | 2007-11-22 | Matsushita Electric Ind Co Ltd | オーディオ信号符号化およびその復号化装置、方法ならびにプログラム |
| US8463412B2 (en) * | 2008-08-21 | 2013-06-11 | Motorola Mobility Llc | Method and apparatus to facilitate determining signal bounding frequencies |
-
2010
- 2010-02-12 ES ES10153530T patent/ES2400661T3/es active Active
- 2010-02-12 EP EP10153530A patent/EP2273493B1/en active Active
- 2010-02-12 PL PL10153530T patent/PL2273493T3/pl unknown
- 2010-06-24 AU AU2010268160A patent/AU2010268160B2/en active Active
- 2010-06-24 CA CA2766573A patent/CA2766573C/en active Active
- 2010-06-24 WO PCT/EP2010/059025 patent/WO2011000780A1/en not_active Ceased
- 2010-06-24 ES ES10725483.1T patent/ES2534944T3/es active Active
- 2010-06-24 MX MX2011013610A patent/MX2011013610A/es active IP Right Grant
- 2010-06-24 CN CN2010800291647A patent/CN102473414B/zh active Active
- 2010-06-24 EP EP10725483.1A patent/EP2449554B1/en active Active
- 2010-06-24 PL PL10725483T patent/PL2449554T3/pl unknown
- 2010-06-24 BR BRPI1010165-9A patent/BRPI1010165B1/pt active IP Right Grant
- 2010-06-24 JP JP2012518070A patent/JP5329714B2/ja active Active
- 2010-06-24 KR KR1020117031327A patent/KR101425157B1/ko active Active
- 2010-06-24 CA CA2856587A patent/CA2856587C/en active Active
- 2010-06-24 RU RU2012102411/08A patent/RU2563164C2/ru active
-
2011
- 2011-12-22 US US13/335,096 patent/US8606586B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| AU2010268160B2 (en) | 2014-03-06 |
| EP2449554B1 (en) | 2015-03-25 |
| CA2856587C (en) | 2016-09-13 |
| RU2012102411A (ru) | 2013-08-20 |
| ES2534944T3 (es) | 2015-04-30 |
| JP5329714B2 (ja) | 2013-10-30 |
| CN102473414B (zh) | 2013-11-06 |
| EP2273493A1 (en) | 2011-01-12 |
| KR20120031957A (ko) | 2012-04-04 |
| AU2010268160A1 (en) | 2012-02-02 |
| BRPI1010165A2 (pt) | 2016-03-29 |
| ES2400661T3 (es) | 2013-04-11 |
| EP2449554A1 (en) | 2012-05-09 |
| MX2011013610A (es) | 2012-03-26 |
| RU2563164C2 (ru) | 2015-09-20 |
| BRPI1010165B1 (pt) | 2021-01-05 |
| US8606586B2 (en) | 2013-12-10 |
| JP2012531632A (ja) | 2012-12-10 |
| HK1170331A1 (en) | 2013-02-22 |
| US20120158409A1 (en) | 2012-06-21 |
| CA2766573C (en) | 2015-06-23 |
| CA2856587A1 (en) | 2011-01-06 |
| CA2766573A1 (en) | 2011-01-06 |
| PL2273493T3 (pl) | 2013-07-31 |
| HK1153035A1 (en) | 2012-03-16 |
| WO2011000780A1 (en) | 2011-01-06 |
| EP2273493B1 (en) | 2012-12-19 |
| CN102473414A (zh) | 2012-05-23 |
| KR101425157B1 (ko) | 2014-08-01 |
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