PT3025515T - Descorrelacionador multicanal, descodificador de áudio multicanal, codificador de áudio multicanal, métodos e programa de computador que usa uma pré-mistura dos sinais de entrada do descorrelacionador - Google Patents
Descorrelacionador multicanal, descodificador de áudio multicanal, codificador de áudio multicanal, métodos e programa de computador que usa uma pré-mistura dos sinais de entrada do descorrelacionadorInfo
- Publication number
- PT3025515T PT3025515T PT14741278T PT14741278T PT3025515T PT 3025515 T PT3025515 T PT 3025515T PT 14741278 T PT14741278 T PT 14741278T PT 14741278 T PT14741278 T PT 14741278T PT 3025515 T PT3025515 T PT 3025515T
- Authority
- PT
- Portugal
- Prior art keywords
- decorrelator
- channel
- premix
- methods
- computer program
- Prior art date
Links
- 238000004590 computer program Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
-
- 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
- G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
-
- 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
- G10L19/032—Quantisation or dequantisation of spectral components
-
- 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
-
- 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
- G10L19/22—Mode decision, i.e. based on audio signal content versus external parameters
-
- 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
- G10L19/26—Pre-filtering or post-filtering
- G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to encoding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/008—Systems employing more than two channels, e.g. quadraphonic in which the audio signals are in digital form, i.e. employing more than two discrete digital channels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
- H04S2400/03—Aspects of down-mixing multi-channel audio to configurations with lower numbers of playback channels, e.g. 7.1 -> 5.1
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
- H04S2400/11—Positioning of individual sound objects, e.g. moving airplane, within a sound field
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
- H04S2420/03—Application of parametric coding in stereophonic audio systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Computational Linguistics (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Mathematical Physics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Algebra (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- General Physics & Mathematics (AREA)
- Pure & Applied Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Stereophonic System (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Complex Calculations (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP13177374 | 2013-07-22 | ||
| EP20130189339 EP2830333A1 (en) | 2013-07-22 | 2013-10-18 | Multi-channel decorrelator, multi-channel audio decoder, multi-channel audio encoder, methods and computer program using a premix of decorrelator input signals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PT3025515T true PT3025515T (pt) | 2019-05-30 |
Family
ID=48832794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PT14741278T PT3025515T (pt) | 2013-07-22 | 2014-07-17 | Descorrelacionador multicanal, descodificador de áudio multicanal, codificador de áudio multicanal, métodos e programa de computador que usa uma pré-mistura dos sinais de entrada do descorrelacionador |
Country Status (19)
| Country | Link |
|---|---|
| US (6) | US11115770B2 (pt) |
| EP (5) | EP2830334A1 (pt) |
| JP (3) | JP6434013B2 (pt) |
| KR (1) | KR101893410B1 (pt) |
| CN (1) | CN105580390B (pt) |
| AR (2) | AR097014A1 (pt) |
| AU (2) | AU2014295206B2 (pt) |
| BR (1) | BR112016001245B1 (pt) |
| CA (1) | CA2919077C (pt) |
| ES (3) | ES2725427T3 (pt) |
| MX (3) | MX362548B (pt) |
| MY (1) | MY178904A (pt) |
| PL (1) | PL3025515T3 (pt) |
| PT (1) | PT3025515T (pt) |
| RU (1) | RU2666640C2 (pt) |
| SG (1) | SG11201600491SA (pt) |
| TW (1) | TWI587285B (pt) |
| WO (1) | WO2015011014A1 (pt) |
| ZA (1) | ZA201601047B (pt) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2830334A1 (en) * | 2013-07-22 | 2015-01-28 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Multi-channel audio decoder, multi-channel audio encoder, methods, computer program and encoded audio representation using a decorrelation of rendered audio signals |
| JP6212645B2 (ja) * | 2013-09-12 | 2017-10-11 | ドルビー・インターナショナル・アーベー | オーディオ・デコード・システムおよびオーディオ・エンコード・システム |
| ES2922373T3 (es) * | 2015-03-03 | 2022-09-14 | Dolby Laboratories Licensing Corp | Realce de señales de audio espacial por decorrelación modulada |
| EP3067885A1 (en) * | 2015-03-09 | 2016-09-14 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for encoding or decoding a multi-channel signal |
| CN107886960B (zh) * | 2016-09-30 | 2020-12-01 | 华为技术有限公司 | 一种音频信号重建方法及装置 |
| US10349196B2 (en) | 2016-10-03 | 2019-07-09 | Nokia Technologies Oy | Method of editing audio signals using separated objects and associated apparatus |
| US10839814B2 (en) * | 2017-10-05 | 2020-11-17 | Qualcomm Incorporated | Encoding or decoding of audio signals |
| US11004457B2 (en) * | 2017-10-18 | 2021-05-11 | Htc Corporation | Sound reproducing method, apparatus and non-transitory computer readable storage medium thereof |
| EP3588988B1 (en) * | 2018-06-26 | 2021-02-17 | Nokia Technologies Oy | Selective presentation of ambient audio content for spatial audio presentation |
| US11990141B2 (en) * | 2018-12-20 | 2024-05-21 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for controlling multichannel audio frame loss concealment |
| GB2582748A (en) | 2019-03-27 | 2020-10-07 | Nokia Technologies Oy | Sound field related rendering |
| GB2584630A (en) * | 2019-05-29 | 2020-12-16 | Nokia Technologies Oy | Audio processing |
| EP3761672B1 (en) | 2019-07-02 | 2023-04-05 | Dolby International AB | Using metadata to aggregate signal processing operations |
| KR20230001135A (ko) * | 2021-06-28 | 2023-01-04 | 네이버 주식회사 | 사용자 맞춤형 현장감 실현을 위한 오디오 콘텐츠를 처리하는 컴퓨터 시스템 및 그의 방법 |
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| US20030014439A1 (en) * | 2001-06-20 | 2003-01-16 | International Business Machines Corporation | Defining a markup language representation for state chart data |
| CA2992097C (en) * | 2004-03-01 | 2018-09-11 | Dolby Laboratories Licensing Corporation | Reconstructing audio signals with multiple decorrelation techniques and differentially coded parameters |
| DE602005006777D1 (de) * | 2004-04-05 | 2008-06-26 | Koninkl Philips Electronics Nv | Mehrkanal-codierer |
| TWI393121B (zh) | 2004-08-25 | 2013-04-11 | Dolby Lab Licensing Corp | 處理一組n個聲音信號之方法與裝置及與其相關聯之電腦程式 |
| US7720230B2 (en) | 2004-10-20 | 2010-05-18 | Agere Systems, Inc. | Individual channel shaping for BCC schemes and the like |
| SE0402649D0 (sv) * | 2004-11-02 | 2004-11-02 | Coding Tech Ab | Advanced methods of creating orthogonal signals |
| SE0402652D0 (sv) | 2004-11-02 | 2004-11-02 | Coding Tech Ab | Methods for improved performance of prediction based multi- channel reconstruction |
| MX2007011995A (es) | 2005-03-30 | 2007-12-07 | Koninkl Philips Electronics Nv | Codificacion y decodificacion de audio. |
| MX2007015118A (es) * | 2005-06-03 | 2008-02-14 | Dolby Lab Licensing Corp | Aparato y metodo para codificacion de senales de audio con instrucciones de decodificacion. |
| US8626503B2 (en) | 2005-07-14 | 2014-01-07 | Erik Gosuinus Petrus Schuijers | Audio encoding and decoding |
| JP4650343B2 (ja) | 2005-07-15 | 2011-03-16 | セイコーエプソン株式会社 | 電気光学装置及び電子機器 |
| KR20070025905A (ko) | 2005-08-30 | 2007-03-08 | 엘지전자 주식회사 | 멀티채널 오디오 코딩에서 효과적인 샘플링 주파수비트스트림 구성방법 |
| CN101253555B (zh) * | 2005-09-01 | 2011-08-24 | 松下电器产业株式会社 | 多声道音频信号处理装置及多声道音频信号处理方法 |
| US8073703B2 (en) * | 2005-10-07 | 2011-12-06 | Panasonic Corporation | Acoustic signal processing apparatus and acoustic signal processing method |
| KR100888474B1 (ko) | 2005-11-21 | 2009-03-12 | 삼성전자주식회사 | 멀티채널 오디오 신호의 부호화/복호화 장치 및 방법 |
| KR101218776B1 (ko) | 2006-01-11 | 2013-01-18 | 삼성전자주식회사 | 다운믹스된 신호로부터 멀티채널 신호 생성방법 및 그 기록매체 |
| US8411869B2 (en) * | 2006-01-19 | 2013-04-02 | Lg Electronics Inc. | Method and apparatus for processing a media signal |
| KR100773560B1 (ko) * | 2006-03-06 | 2007-11-05 | 삼성전자주식회사 | 스테레오 신호 생성 방법 및 장치 |
| TW200742275A (en) * | 2006-03-21 | 2007-11-01 | Dolby Lab Licensing Corp | Low bit rate audio encoding and decoding in which multiple channels are represented by fewer channels and auxiliary information |
| EP1999997B1 (en) | 2006-03-28 | 2011-04-13 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Enhanced method for signal shaping in multi-channel audio reconstruction |
| EP2000001B1 (en) | 2006-03-28 | 2011-12-21 | Telefonaktiebolaget LM Ericsson (publ) | Method and arrangement for a decoder for multi-channel surround sound |
| KR101346490B1 (ko) | 2006-04-03 | 2014-01-02 | 디티에스 엘엘씨 | 오디오 신호 처리 방법 및 장치 |
| US8027479B2 (en) | 2006-06-02 | 2011-09-27 | Coding Technologies Ab | Binaural multi-channel decoder in the context of non-energy conserving upmix rules |
| SG175632A1 (en) * | 2006-10-16 | 2011-11-28 | Dolby Sweden Ab | Enhanced coding and parameter representation of multichannel downmixed object coding |
| JP5337941B2 (ja) * | 2006-10-16 | 2013-11-06 | フラウンホッファー−ゲゼルシャフト ツァ フェルダールング デァ アンゲヴァンテン フォアシュンク エー．ファオ | マルチチャネル・パラメータ変換のための装置および方法 |
| KR101111520B1 (ko) | 2006-12-07 | 2012-05-24 | 엘지전자 주식회사 | 오디오 처리 방법 및 장치 |
| JP5133401B2 (ja) * | 2007-04-26 | 2013-01-30 | ドルビー・インターナショナル・アクチボラゲット | 出力信号の合成装置及び合成方法 |
| CN101816191B (zh) * | 2007-09-26 | 2014-09-17 | 弗劳恩霍夫应用研究促进协会 | 用于提取环境信号的装置和方法 |
| CA2701360C (en) | 2007-10-09 | 2014-04-22 | Dirk Jeroen Breebaart | Method and apparatus for generating a binaural audio signal |
| WO2009049895A1 (en) | 2007-10-17 | 2009-04-23 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Audio coding using downmix |
| EP2093911A3 (en) | 2007-11-28 | 2010-01-13 | Lg Electronics Inc. | Receiving system and audio data processing method thereof |
| US8126172B2 (en) | 2007-12-06 | 2012-02-28 | Harman International Industries, Incorporated | Spatial processing stereo system |
| KR101147780B1 (ko) | 2008-01-01 | 2012-06-01 | 엘지전자 주식회사 | 오디오 신호 처리 방법 및 장치 |
| US20090194756A1 (en) * | 2008-01-31 | 2009-08-06 | Kau Derchang | Self-aligned eletrode phase change memory |
| RU2469497C2 (ru) | 2008-02-14 | 2012-12-10 | Долби Лэборетериз Лайсенсинг Корпорейшн | Стереофоническое расширение |
| JP5366104B2 (ja) | 2008-06-26 | 2013-12-11 | オランジュ | マルチチャネル・オーディオ信号の空間合成 |
| EP2144229A1 (en) | 2008-07-11 | 2010-01-13 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Efficient use of phase information in audio encoding and decoding |
| EP2175670A1 (en) | 2008-10-07 | 2010-04-14 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Binaural rendering of a multi-channel audio signal |
| JP5358691B2 (ja) | 2009-04-08 | 2013-12-04 | フラウンホッファー−ゲゼルシャフト ツァ フェルダールング デァ アンゲヴァンテン フォアシュンク エー．ファオ | 位相値平滑化を用いてダウンミックスオーディオ信号をアップミックスする装置、方法、およびコンピュータプログラム |
| EP2420050B1 (en) * | 2009-04-15 | 2013-04-10 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Multichannel echo canceller |
| ES2524428T3 (es) | 2009-06-24 | 2014-12-09 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Decodificador de señales de audio, procedimiento para decodificar una señal de audio y programa de computación que utiliza etapas en cascada de procesamiento de objetos de audio |
| ES2690164T3 (es) | 2009-06-25 | 2018-11-19 | Dts Licensing Limited | Dispositivo y método para convertir una señal de audio espacial |
| EP2461321B1 (en) * | 2009-07-31 | 2018-05-16 | Panasonic Intellectual Property Management Co., Ltd. | Coding device and decoding device |
| TWI433137B (zh) | 2009-09-10 | 2014-04-01 | Dolby Int Ab | 藉由使用參數立體聲改良調頻立體聲收音機之聲頻信號之設備與方法 |
| JP5604933B2 (ja) | 2010-03-30 | 2014-10-15 | 富士通株式会社 | ダウンミクス装置およびダウンミクス方法 |
| JP5753899B2 (ja) * | 2010-07-20 | 2015-07-22 | ファーウェイ テクノロジーズ カンパニー リミテッド | オーディオ信号合成器 |
| BR112013004362B1 (pt) * | 2010-08-25 | 2020-12-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | aparelho para a geração de um sinal descorrelacionado utilizando informação de fase transmitida |
| RU2618383C2 (ru) * | 2011-11-01 | 2017-05-03 | Конинклейке Филипс Н.В. | Кодирование и декодирование аудиообъектов |
| EP2956935B1 (en) | 2013-02-14 | 2017-01-04 | Dolby Laboratories Licensing Corporation | Controlling the inter-channel coherence of upmixed audio signals |
| EP2830334A1 (en) | 2013-07-22 | 2015-01-28 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Multi-channel audio decoder, multi-channel audio encoder, methods, computer program and encoded audio representation using a decorrelation of rendered audio signals |
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2013
- 2013-10-18 EP EP20130189345 patent/EP2830334A1/en not_active Withdrawn
- 2013-10-18 EP EP20130189339 patent/EP2830333A1/en not_active Withdrawn
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2014
- 2014-07-17 CN CN201480052100.7A patent/CN105580390B/zh active Active
- 2014-07-17 SG SG11201600491SA patent/SG11201600491SA/en unknown
- 2014-07-17 BR BR112016001245-3A patent/BR112016001245B1/pt active IP Right Grant
- 2014-07-17 PL PL14741278T patent/PL3025515T3/pl unknown
- 2014-07-17 JP JP2016528442A patent/JP6434013B2/ja active Active
- 2014-07-17 MX MX2016000915A patent/MX362548B/es active IP Right Grant
- 2014-07-17 EP EP14741278.7A patent/EP3025515B1/en active Active
- 2014-07-17 KR KR1020167004501A patent/KR101893410B1/ko active IP Right Grant
- 2014-07-17 WO PCT/EP2014/065395 patent/WO2015011014A1/en active Application Filing
- 2014-07-17 ES ES14741278T patent/ES2725427T3/es active Active
- 2014-07-17 CA CA2919077A patent/CA2919077C/en active Active
- 2014-07-17 EP EP18178664.1A patent/EP3419314B1/en active Active
- 2014-07-17 AU AU2014295206A patent/AU2014295206B2/en active Active
- 2014-07-17 ES ES18178666T patent/ES2924174T3/es active Active
- 2014-07-17 EP EP18178666.6A patent/EP3419315B1/en active Active
- 2014-07-17 RU RU2016105468A patent/RU2666640C2/ru active
- 2014-07-17 MY MYPI2016000117A patent/MY178904A/en unknown
- 2014-07-17 PT PT14741278T patent/PT3025515T/pt unknown
- 2014-07-17 ES ES18178664T patent/ES2925038T3/es active Active
- 2014-07-21 TW TW103124969A patent/TWI587285B/zh active
- 2014-07-22 AR ARP140102718A patent/AR097014A1/es active IP Right Grant
- 2014-07-22 AR ARP140102719A patent/AR097015A1/es active IP Right Grant
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2016
- 2016-01-21 MX MX2018012891A patent/MX2018012891A/es unknown
- 2016-01-21 MX MX2018012892A patent/MX2018012892A/es unknown
- 2016-01-22 US US15/004,738 patent/US11115770B2/en active Active
- 2016-02-16 ZA ZA2016/01047A patent/ZA201601047B/en unknown
- 2016-04-25 US US15/138,160 patent/US11240619B2/en active Active
- 2016-04-25 US US15/138,168 patent/US11381925B2/en active Active
- 2016-04-25 US US15/138,176 patent/US10448185B2/en active Active
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2017
- 2017-10-20 AU AU2017248532A patent/AU2017248532B2/en active Active
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2018
- 2018-07-23 JP JP2018137637A patent/JP6687683B2/ja active Active
- 2018-12-20 US US16/228,257 patent/US11252523B2/en active Active
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2020
- 2020-04-02 JP JP2020066343A patent/JP7000488B2/ja active Active
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2021
- 2021-08-27 US US17/459,904 patent/US20220167102A1/en active Pending
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