MX357136B - Codificación de entropia basada en el contexto, de valores de muestras de una envoltura espectral. - Google Patents
Codificación de entropia basada en el contexto, de valores de muestras de una envoltura espectral.Info
- Publication number
- MX357136B MX357136B MX2016000509A MX2016000509A MX357136B MX 357136 B MX357136 B MX 357136B MX 2016000509 A MX2016000509 A MX 2016000509A MX 2016000509 A MX2016000509 A MX 2016000509A MX 357136 B MX357136 B MX 357136B
- Authority
- MX
- Mexico
- Prior art keywords
- context
- entropy coding
- spectral envelope
- sample values
- hand
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
- G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
- G10L19/028—Noise substitution, i.e. substituting non-tonal spectral components by noisy source
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
- G10L19/038—Vector quantisation, e.g. TwinVQ audio
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal 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
Abstract
Un concepto mejorado para la codificación de valores de muestras de una envoltura espectral se obtiene mediante la combinación de la predicción espectrotemporal por una parte, y la codificación de entropía basada en el contexto, de los residuales, por otra parte, mientras que se determina, en particular, el contexto para un valor de muestra actual dependiente de una medida de una desviación entre un par de valores de muestras ya codificados/decodificados de la envoltura espectral en una proximidad espectrotemporal del valor de muestra actual. La combinación de la predicción espectrotemporal por una parte, y la codificación de entropía basada en el contexto de los residuales de predicción, donde la selección del contexto depende de la medida de desviación, por otra parte, armoniza con la naturaleza de las envolturas espectrales.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP13177351 | 2013-07-22 | ||
| EP13189336.4A EP2830055A1 (en) | 2013-07-22 | 2013-10-18 | Context-based entropy coding of sample values of a spectral envelope |
| PCT/EP2014/065173 WO2015010966A1 (en) | 2013-07-22 | 2014-07-15 | Context-based entropy coding of sample values of a spectral envelope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MX2016000509A MX2016000509A (es) | 2016-04-07 |
| MX357136B true MX357136B (es) | 2018-06-27 |
Family
ID=48808217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MX2016000509A MX357136B (es) | 2013-07-22 | 2014-07-15 | Codificación de entropia basada en el contexto, de valores de muestras de una envoltura espectral. |
Country Status (20)
| Country | Link |
|---|---|
| US (5) | US9947330B2 (es) |
| EP (4) | EP2830055A1 (es) |
| JP (4) | JP6374501B2 (es) |
| KR (1) | KR101797407B1 (es) |
| CN (2) | CN105556599B (es) |
| AR (1) | AR096986A1 (es) |
| AU (1) | AU2014295314B2 (es) |
| BR (1) | BR112016001142B1 (es) |
| CA (1) | CA2918851C (es) |
| ES (2) | ES2905692T3 (es) |
| MX (1) | MX357136B (es) |
| MY (1) | MY192658A (es) |
| PL (2) | PL3025338T3 (es) |
| PT (2) | PT3333849T (es) |
| RU (1) | RU2663363C2 (es) |
| SG (1) | SG11201600492QA (es) |
| TR (1) | TR201807486T4 (es) |
| TW (1) | TWI557725B (es) |
| WO (1) | WO2015010966A1 (es) |
| ZA (1) | ZA201601009B (es) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI671736B (zh) | 2011-10-21 | 2019-09-11 | 南韓商三星電子股份有限公司 | 對信號的包絡進行寫碼的設備及對其進行解碼的設備 |
| EP2830065A1 (en) | 2013-07-22 | 2015-01-28 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for decoding an encoded audio signal using a cross-over filter around a transition frequency |
| EP2830055A1 (en) * | 2013-07-22 | 2015-01-28 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Context-based entropy coding of sample values of a spectral envelope |
| US10553228B2 (en) * | 2015-04-07 | 2020-02-04 | Dolby International Ab | Audio coding with range extension |
| TW201711475A (zh) * | 2015-09-02 | 2017-03-16 | 矽創電子股份有限公司 | 哥倫布-萊斯編碼電路與解碼電路 |
| EP3483882A1 (en) | 2017-11-10 | 2019-05-15 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Controlling bandwidth in encoders and/or decoders |
| EP3483879A1 (en) | 2017-11-10 | 2019-05-15 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Analysis/synthesis windowing function for modulated lapped transformation |
| EP3483880A1 (en) | 2017-11-10 | 2019-05-15 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Temporal noise shaping |
| EP3483878A1 (en) | 2017-11-10 | 2019-05-15 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Audio decoder supporting a set of different loss concealment tools |
| WO2019091573A1 (en) * | 2017-11-10 | 2019-05-16 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for encoding and decoding an audio signal using downsampling or interpolation of scale parameters |
| EP3483886A1 (en) | 2017-11-10 | 2019-05-15 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Selecting pitch lag |
| EP3483883A1 (en) | 2017-11-10 | 2019-05-15 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Audio coding and decoding with selective postfiltering |
| WO2019091576A1 (en) | 2017-11-10 | 2019-05-16 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Audio encoders, audio decoders, methods and computer programs adapting an encoding and decoding of least significant bits |
| EP3483884A1 (en) | 2017-11-10 | 2019-05-15 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Signal filtering |
| US11589360B2 (en) * | 2020-09-22 | 2023-02-21 | The United States Of America As Represented By The Secretary Of The Army | Distributed adaptive beamforming and nullforming for secure wireless communications |
Family Cites Families (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2313525B (en) | 1996-05-24 | 2000-06-07 | Motorola Ltd | Filter for multicarrier communication system and method for peak power control therein |
| US6778965B1 (en) * | 1996-10-10 | 2004-08-17 | Koninklijke Philips Electronics N.V. | Data compression and expansion of an audio signal |
| SE512719C2 (sv) | 1997-06-10 | 2000-05-02 | Lars Gustaf Liljeryd | En metod och anordning för reduktion av dataflöde baserad på harmonisk bandbreddsexpansion |
| SE9903553D0 (sv) | 1999-01-27 | 1999-10-01 | Lars Liljeryd | Enhancing percepptual performance of SBR and related coding methods by adaptive noise addition (ANA) and noise substitution limiting (NSL) |
| US6978236B1 (en) * | 1999-10-01 | 2005-12-20 | Coding Technologies Ab | Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching |
| SE0202159D0 (sv) * | 2001-07-10 | 2002-07-09 | Coding Technologies Sweden Ab | Efficientand scalable parametric stereo coding for low bitrate applications |
| US7447631B2 (en) * | 2002-06-17 | 2008-11-04 | Dolby Laboratories Licensing Corporation | Audio coding system using spectral hole filling |
| ATE486348T1 (de) * | 2003-06-30 | 2010-11-15 | Koninkl Philips Electronics Nv | Verbesserung der qualität von dekodierten audio mittels hinzufügen von geräusch |
| US7460990B2 (en) | 2004-01-23 | 2008-12-02 | Microsoft Corporation | Efficient coding of digital media spectral data using wide-sense perceptual similarity |
| JP2006047561A (ja) * | 2004-08-03 | 2006-02-16 | Matsushita Electric Ind Co Ltd | オーディオ信号符号化装置およびオーディオ信号復号化装置 |
| ES2350494T3 (es) * | 2005-04-01 | 2011-01-24 | Qualcomm Incorporated | Procedimiento y aparatos para codificar y decodificar una parte de banda alta de una señal de habla. |
| KR100866885B1 (ko) | 2005-10-20 | 2008-11-04 | 엘지전자 주식회사 | 멀티채널 오디오 신호의 부호화 및 복호화 방법과 그 장치 |
| US7720677B2 (en) * | 2005-11-03 | 2010-05-18 | Coding Technologies Ab | Time warped modified transform coding of audio signals |
| US8392176B2 (en) * | 2006-04-10 | 2013-03-05 | Qualcomm Incorporated | Processing of excitation in audio coding and decoding |
| EP1852849A1 (en) * | 2006-05-05 | 2007-11-07 | Deutsche Thomson-Brandt Gmbh | Method and apparatus for lossless encoding of a source signal, using a lossy encoded data stream and a lossless extension data stream |
| US8260609B2 (en) * | 2006-07-31 | 2012-09-04 | Qualcomm Incorporated | Systems, methods, and apparatus for wideband encoding and decoding of inactive frames |
| TR201906713T4 (tr) | 2007-01-10 | 2019-05-21 | Koninklijke Philips Nv | Audio kod çözücü. |
| US8548815B2 (en) * | 2007-09-19 | 2013-10-01 | Qualcomm Incorporated | Efficient design of MDCT / IMDCT filterbanks for speech and audio coding applications |
| US20090099844A1 (en) * | 2007-10-16 | 2009-04-16 | Qualcomm Incorporated | Efficient implementation of analysis and synthesis filterbanks for mpeg aac and mpeg aac eld encoders/decoders |
| JP5018557B2 (ja) | 2008-02-29 | 2012-09-05 | カシオ計算機株式会社 | 符号化装置、復号化装置、符号化方法、復号化方法及びプログラム |
| EP2346030B1 (en) | 2008-07-11 | 2014-10-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Audio encoder, method for encoding an audio signal and computer program |
| RU2536679C2 (ru) * | 2008-07-11 | 2014-12-27 | Фраунхофер-Гезелльшафт цур Фёрдерунг дер ангевандтен | Передатчик сигнала активации с деформацией по времени, кодер звукового сигнала, способ преобразования сигнала активации с деформацией по времени, способ кодирования звукового сигнала и компьютерные программы |
| BR122021007798B1 (pt) * | 2008-07-11 | 2021-10-26 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E. V. | Codificador de áudio e decodificador de áudio |
| MY181247A (en) | 2008-07-11 | 2020-12-21 | Frauenhofer Ges Zur Forderung Der Angenwandten Forschung E V | Audio encoder and decoder for encoding and decoding audio samples |
| PL2146344T3 (pl) * | 2008-07-17 | 2017-01-31 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Sposób kodowania/dekodowania sygnału audio obejmujący przełączalne obejście |
| KR20100136890A (ko) | 2009-06-19 | 2010-12-29 | 삼성전자주식회사 | 컨텍스트 기반의 산술 부호화 장치 및 방법과 산술 복호화 장치 및 방법 |
| ES2531013T3 (es) | 2009-10-20 | 2015-03-10 | Fraunhofer Ges Forschung | Codificador de audio, decodificador de audio, método para codificar información de audio, método para decodificar información de audio y programa de computación que usa la detección de un grupo de valores espectrales previamente decodificados |
| AU2011240239B2 (en) | 2010-04-13 | 2014-06-26 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Audio or video encoder, audio or video decoder and related methods for processing multi-channel audio or video signals using a variable prediction direction |
| US9047875B2 (en) * | 2010-07-19 | 2015-06-02 | Futurewei Technologies, Inc. | Spectrum flatness control for bandwidth extension |
| US8532985B2 (en) | 2010-12-03 | 2013-09-10 | Microsoft Coporation | Warped spectral and fine estimate audio encoding |
| EP2830055A1 (en) | 2013-07-22 | 2015-01-28 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Context-based entropy coding of sample values of a spectral envelope |
-
2013
- 2013-10-18 EP EP13189336.4A patent/EP2830055A1/en not_active Withdrawn
-
2014
- 2014-07-14 TW TW103124173A patent/TWI557725B/zh active
- 2014-07-15 PT PT172106528T patent/PT3333849T/pt unknown
- 2014-07-15 KR KR1020167003229A patent/KR101797407B1/ko active IP Right Grant
- 2014-07-15 CN CN201480041809.7A patent/CN105556599B/zh active Active
- 2014-07-15 PT PT147388664T patent/PT3025338T/pt unknown
- 2014-07-15 ES ES17210652T patent/ES2905692T3/es active Active
- 2014-07-15 EP EP21212614.8A patent/EP3996091A1/en active Pending
- 2014-07-15 TR TR2018/07486T patent/TR201807486T4/tr unknown
- 2014-07-15 EP EP17210652.8A patent/EP3333849B1/en active Active
- 2014-07-15 SG SG11201600492QA patent/SG11201600492QA/en unknown
- 2014-07-15 MY MYPI2016000068A patent/MY192658A/en unknown
- 2014-07-15 RU RU2016105764A patent/RU2663363C2/ru active
- 2014-07-15 ES ES14738866.4T patent/ES2665646T3/es active Active
- 2014-07-15 BR BR112016001142-2A patent/BR112016001142B1/pt active IP Right Grant
- 2014-07-15 PL PL14738866T patent/PL3025338T3/pl unknown
- 2014-07-15 JP JP2016528422A patent/JP6374501B2/ja active Active
- 2014-07-15 AU AU2014295314A patent/AU2014295314B2/en active Active
- 2014-07-15 WO PCT/EP2014/065173 patent/WO2015010966A1/en active Application Filing
- 2014-07-15 PL PL17210652T patent/PL3333849T3/pl unknown
- 2014-07-15 EP EP14738866.4A patent/EP3025338B1/en active Active
- 2014-07-15 MX MX2016000509A patent/MX357136B/es active IP Right Grant
- 2014-07-15 CN CN201911105761.2A patent/CN110895945B/zh active Active
- 2014-07-15 CA CA2918851A patent/CA2918851C/en active Active
- 2014-07-21 AR ARP140102688A patent/AR096986A1/es active IP Right Grant
-
2016
- 2016-01-19 US US15/000,844 patent/US9947330B2/en active Active
- 2016-02-15 ZA ZA2016/01009A patent/ZA201601009B/en unknown
-
2018
- 2018-03-16 US US15/923,643 patent/US10726854B2/en active Active
- 2018-07-19 JP JP2018135773A patent/JP6744363B2/ja active Active
-
2020
- 2020-07-01 US US16/918,835 patent/US11250866B2/en active Active
- 2020-07-30 JP JP2020129052A patent/JP7260509B2/ja active Active
-
2022
- 2022-01-07 US US17/571,237 patent/US11790927B2/en active Active
-
2023
- 2023-04-06 JP JP2023062397A patent/JP2023098967A/ja active Pending
- 2023-09-11 US US18/464,986 patent/US20240079020A1/en active Pending
Also Published As
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| MX2016000509A (es) | Codificacion de entropia basada en el contexto, de valores de muestras de una envoltura espectral. | |
| CY1121765T1 (el) | Μεθοδος για αποκωδικοποιηση με εντροπια τμηματος τεμαχιου | |
| PH12017500773A1 (en) | Parameter update method for entropy coding and decoding of conversion coefficient level, and entropy coding device and entropy decoding device of conversion coefficient level using same | |
| UA114418C2 (uk) | Визначення контекстів для кодування даних коефіцієнтів перетворення при кодуванні відео | |
| MX362424B (es) | Codificador y decodificador de audio usando un procesador de dominio de frecuencia con un relleno de intervalo de banda completa y un procesador de dominio de tiempo. | |
| JP2014520282A5 (es) | ||
| MY181965A (en) | Coding of spectral coefficients of a spectrum of an audio signal | |
| MY172238A (en) | Noise filling in perceptual transform audio coding | |
| BR112015006451A2 (pt) | parâmetros de decodificador de referência hipotético em codificação de vídeo | |
| MX2016011211A (es) | Codificacion de transformada inversa de color-espacio universal. | |
| PH12014502044A1 (en) | Deriving context for last position coding for video coding | |
| MX2012008075A (es) | Codificador de audio, decodificador de audio, metodo para codificar e informacion de audio, metodo para decodificar una informacion de audio y programa de computacion utilizando una modificacion de una representacion de un numero de un valor de contexto numerico previo. | |
| AR078706A1 (es) | Codificador de audio, decodificador de audio, metodo para codificar informacion de audio, metodo para decodificar informacion de audio y programa de computacion que usa una regla dependiente de la region para un mapeado mediante codificacion aritmetica | |
| MX2014014491A (es) | Aparato de procesamiento de imagenes y metodo de procesamiento de imagenes. | |
| WO2014005081A3 (en) | Coding of significance flags | |
| MX353385B (es) | Codificación de audio basada en predicción lineal que utiliza cálculo de distribución de probabilidades mejorado. | |
| NZ783117A (en) | An encoder, a decoder and corresponding methods for sub-block partitioning mode | |
| EP3046105A4 (en) | Energy lossless coding method and device, signal coding method and device, energy lossless decoding method and device, and signal decoding method and device | |
| MX2021015847A (es) | Derivacion de ponderacion de muestra croma para modo de particion geometrica. | |
| MY172894A (en) | System and method for mixed codebook excitation for speech coding | |
| MY173129A (en) | Audio encoding method and apparatus | |
| MX2021009323A (es) | Calculo de distancia de muestra para modo de division geometrica. | |
| TH171427A (th) | ตัวเข้ารหัสสัญญาณเสียง ตัวถอดรหัสสัญญาณเสียง และวิธีการที่เกี่ยวข้อง ซึ่งใช้การประมวลผลแบบสองช่องสัญญาณภายในขอบข่ายงาน ของการเติมช่องว่างอัจฉริยะ |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG | Grant or registration |