CN113808598B - 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 - Google Patents
针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 Download PDFInfo
- Publication number
- CN113808598B CN113808598B CN202111089783.1A CN202111089783A CN113808598B CN 113808598 B CN113808598 B CN 113808598B CN 202111089783 A CN202111089783 A CN 202111089783A CN 113808598 B CN113808598 B CN 113808598B
- Authority
- CN
- China
- Prior art keywords
- hoa
- representation
- signal
- compressed
- sound
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000007906 compression Methods 0.000 title abstract description 17
- 230000006835 compression Effects 0.000 title abstract description 16
- 239000011159 matrix material Substances 0.000 claims description 37
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000003786 synthesis reaction Methods 0.000 claims description 5
- 239000013598 vector Substances 0.000 description 48
- 238000012545 processing Methods 0.000 description 24
- 230000005236 sound signal Effects 0.000 description 20
- 230000006870 function Effects 0.000 description 19
- 238000010606 normalization Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 9
- 230000006837 decompression Effects 0.000 description 8
- 238000002156 mixing Methods 0.000 description 8
- 238000012986 modification Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 7
- 238000005070 sampling Methods 0.000 description 7
- 238000009877 rendering Methods 0.000 description 6
- 241001306293 Ophrys insectifera Species 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 230000009466 transformation Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 4
- 238000013139 quantization Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000002441 reversible effect Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 101100001674 Emericella variicolor andI gene Proteins 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 229940050561 matrix product Drugs 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 230000005428 wave function Effects 0.000 description 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
- G10L19/008—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
- G10L19/04—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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Computational Linguistics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Mathematical Physics (AREA)
- Quality & Reliability (AREA)
- Stereophonic System (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP14306026.7 | 2014-06-27 | ||
| EP14306026 | 2014-06-27 | ||
| CN201580035127.XA CN106663434B (zh) | 2014-06-27 | 2015-06-22 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
| PCT/EP2015/063917 WO2015197516A1 (en) | 2014-06-27 | 2015-06-22 | Method for determining for the compression of an hoa data frame representation a lowest integer number of bits required for representing non-differential gain values |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580035127.XA Division CN106663434B (zh) | 2014-06-27 | 2015-06-22 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113808598A CN113808598A (zh) | 2021-12-17 |
| CN113808598B true CN113808598B (zh) | 2025-03-18 |
Family
ID=51178841
Family Applications (9)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111089783.1A Active CN113808598B (zh) | 2014-06-27 | 2015-06-22 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
| CN202111089793.5A Active CN113793617B (zh) | 2014-06-27 | 2015-06-22 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
| CN202111089797.3A Active CN113808599B (zh) | 2014-06-27 | 2015-06-22 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
| CN202510112715.4A Pending CN119864039A (zh) | 2014-06-27 | 2015-06-22 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
| CN202111089841.0A Active CN113808600B (zh) | 2014-06-27 | 2015-06-22 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
| CN202510186185.8A Pending CN120032651A (zh) | 2014-06-27 | 2015-06-22 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
| CN201580035127.XA Active CN106663434B (zh) | 2014-06-27 | 2015-06-22 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
| CN202111089981.8A Active CN113793618B (zh) | 2014-06-27 | 2015-06-22 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
| CN202510186602.9A Pending CN120032652A (zh) | 2014-06-27 | 2015-06-22 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
Family Applications After (8)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111089793.5A Active CN113793617B (zh) | 2014-06-27 | 2015-06-22 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
| CN202111089797.3A Active CN113808599B (zh) | 2014-06-27 | 2015-06-22 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
| CN202510112715.4A Pending CN119864039A (zh) | 2014-06-27 | 2015-06-22 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
| CN202111089841.0A Active CN113808600B (zh) | 2014-06-27 | 2015-06-22 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
| CN202510186185.8A Pending CN120032651A (zh) | 2014-06-27 | 2015-06-22 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
| CN201580035127.XA Active CN106663434B (zh) | 2014-06-27 | 2015-06-22 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
| CN202111089981.8A Active CN113793618B (zh) | 2014-06-27 | 2015-06-22 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
| CN202510186602.9A Pending CN120032652A (zh) | 2014-06-27 | 2015-06-22 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
Country Status (7)
| Country | Link |
|---|---|
| US (3) | US9922657B2 (enExample) |
| EP (3) | EP4057280B1 (enExample) |
| JP (5) | JP6641303B2 (enExample) |
| KR (3) | KR102428425B1 (enExample) |
| CN (9) | CN113808598B (enExample) |
| TW (4) | TW202403729A (enExample) |
| WO (1) | WO2015197516A1 (enExample) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2960903A1 (en) | 2014-06-27 | 2015-12-30 | Thomson Licensing | Method and apparatus for determining for the compression of an HOA data frame representation a lowest integer number of bits required for representing non-differential gain values |
| CN113808598B (zh) * | 2014-06-27 | 2025-03-18 | 杜比国际公司 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
| US10075802B1 (en) | 2017-08-08 | 2018-09-11 | Qualcomm Incorporated | Bitrate allocation for higher order ambisonic audio data |
| AU2020299973B2 (en) * | 2019-07-02 | 2025-06-05 | Dolby International Ab | Methods, apparatus and systems for representation, encoding, and decoding of discrete directivity data |
| CN117395591A (zh) * | 2021-03-05 | 2024-01-12 | 华为技术有限公司 | Hoa系数的获取方法和装置 |
| CN115346537B (zh) * | 2021-05-14 | 2024-11-29 | 华为技术有限公司 | 一种音频编码、解码方法及装置 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106663434B (zh) * | 2014-06-27 | 2021-09-28 | 杜比国际公司 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
Family Cites Families (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994012972A1 (en) * | 1992-11-30 | 1994-06-09 | Digital Voice Systems, Inc. | Method and apparatus for quantization of harmonic amplitudes |
| US5956674A (en) * | 1995-12-01 | 1999-09-21 | Digital Theater Systems, Inc. | Multi-channel predictive subband audio coder using psychoacoustic adaptive bit allocation in frequency, time and over the multiple channels |
| SE522453C2 (sv) * | 2000-02-28 | 2004-02-10 | Scania Cv Ab | Sätt och anordning för styrning av ett mekaniskt tillsatsaggregat i ett motorfordon |
| CN1138254C (zh) * | 2001-03-19 | 2004-02-11 | 北京阜国数字技术有限公司 | 一种基于小波变换的音频信号压缩编/解码方法 |
| EP1513137A1 (en) * | 2003-08-22 | 2005-03-09 | MicronasNIT LCC, Novi Sad Institute of Information Technologies | Speech processing system and method with multi-pulse excitation |
| CN1926607B (zh) * | 2004-03-01 | 2011-07-06 | 杜比实验室特许公司 | 多信道音频编码 |
| US8788264B2 (en) | 2007-06-27 | 2014-07-22 | Nec Corporation | Audio encoding method, audio decoding method, audio encoding device, audio decoding device, program, and audio encoding/decoding system |
| EP2094032A1 (en) * | 2008-02-19 | 2009-08-26 | Deutsche Thomson OHG | Audio signal, method and apparatus for encoding or transmitting the same and method and apparatus for processing the same |
| ES2547545T3 (es) * | 2008-09-17 | 2015-10-07 | Panasonic Intellectual Property Management Co., Ltd. | Medio de grabación, dispositivo de reproducción y circuito integrado |
| TWI529703B (zh) * | 2010-02-11 | 2016-04-11 | 杜比實驗室特許公司 | 用以非破壞地正常化可攜式裝置中音訊訊號響度之系統及方法 |
| AU2011231565B2 (en) * | 2010-03-26 | 2014-08-28 | Dolby International Ab | Method and device for decoding an audio soundfield representation for audio playback |
| BR122019013299B1 (pt) * | 2010-04-09 | 2021-01-05 | Dolby International Ab | aparelho e método para emitir um sinal de áudio esterofônico possuindo um canal esquerdo e um canal direito e meio legível por computador não transitório |
| EP2450880A1 (en) * | 2010-11-05 | 2012-05-09 | Thomson Licensing | Data structure for Higher Order Ambisonics audio data |
| EP2451196A1 (en) * | 2010-11-05 | 2012-05-09 | Thomson Licensing | Method and apparatus for generating and for decoding sound field data including ambisonics sound field data of an order higher than three |
| EP2469741A1 (en) * | 2010-12-21 | 2012-06-27 | Thomson Licensing | Method and apparatus for encoding and decoding successive frames of an ambisonics representation of a 2- or 3-dimensional sound field |
| CN102760437B (zh) * | 2011-04-29 | 2014-03-12 | 上海交通大学 | 实时声道控制转换的音频解码装置 |
| EP2541547A1 (en) * | 2011-06-30 | 2013-01-02 | Thomson Licensing | Method and apparatus for changing the relative positions of sound objects contained within a higher-order ambisonics representation |
| EP2637427A1 (en) * | 2012-03-06 | 2013-09-11 | Thomson Licensing | Method and apparatus for playback of a higher-order ambisonics audio signal |
| EP2665208A1 (en) * | 2012-05-14 | 2013-11-20 | Thomson Licensing | Method and apparatus for compressing and decompressing a Higher Order Ambisonics signal representation |
| JP6230602B2 (ja) | 2012-07-16 | 2017-11-15 | ドルビー・インターナショナル・アーベー | オーディオ再生のためのオーディオ音場表現をレンダリングするための方法および装置 |
| EP2688066A1 (en) * | 2012-07-16 | 2014-01-22 | Thomson Licensing | Method and apparatus for encoding multi-channel HOA audio signals for noise reduction, and method and apparatus for decoding multi-channel HOA audio signals for noise reduction |
| EP2733963A1 (en) * | 2012-11-14 | 2014-05-21 | Thomson Licensing | Method and apparatus for facilitating listening to a sound signal for matrixed sound signals |
| EP2738962A1 (en) * | 2012-11-29 | 2014-06-04 | Thomson Licensing | Method and apparatus for determining dominant sound source directions in a higher order ambisonics representation of a sound field |
| EP2743922A1 (en) * | 2012-12-12 | 2014-06-18 | Thomson Licensing | Method and apparatus for compressing and decompressing a higher order ambisonics representation for a sound field |
| EP2800401A1 (en) | 2013-04-29 | 2014-11-05 | Thomson Licensing | Method and Apparatus for compressing and decompressing a Higher Order Ambisonics representation |
| EP2824661A1 (en) | 2013-07-11 | 2015-01-14 | Thomson Licensing | Method and Apparatus for generating from a coefficient domain representation of HOA signals a mixed spatial/coefficient domain representation of said HOA signals |
| CN107077852B (zh) * | 2014-06-27 | 2020-12-04 | 杜比国际公司 | 包括与hoa数据帧表示的特定数据帧的通道信号关联的非差分增益值的编码hoa数据帧表示 |
| EP2960903A1 (en) * | 2014-06-27 | 2015-12-30 | Thomson Licensing | Method and apparatus for determining for the compression of an HOA data frame representation a lowest integer number of bits required for representing non-differential gain values |
| EP3860154B1 (en) * | 2014-06-27 | 2024-02-21 | Dolby International AB | Method for decoding a compressed hoa dataframe representation of a sound field. |
-
2015
- 2015-06-22 CN CN202111089783.1A patent/CN113808598B/zh active Active
- 2015-06-22 US US15/319,711 patent/US9922657B2/en active Active
- 2015-06-22 CN CN202111089793.5A patent/CN113793617B/zh active Active
- 2015-06-22 CN CN202111089797.3A patent/CN113808599B/zh active Active
- 2015-06-22 JP JP2016575018A patent/JP6641303B2/ja active Active
- 2015-06-22 EP EP22165452.8A patent/EP4057280B1/en active Active
- 2015-06-22 CN CN202510112715.4A patent/CN119864039A/zh active Pending
- 2015-06-22 CN CN202111089841.0A patent/CN113808600B/zh active Active
- 2015-06-22 EP EP18196350.5A patent/EP3489953B8/en active Active
- 2015-06-22 KR KR1020167036543A patent/KR102428425B1/ko active Active
- 2015-06-22 CN CN202510186185.8A patent/CN120032651A/zh active Pending
- 2015-06-22 CN CN201580035127.XA patent/CN106663434B/zh active Active
- 2015-06-22 CN CN202111089981.8A patent/CN113793618B/zh active Active
- 2015-06-22 WO PCT/EP2015/063917 patent/WO2015197516A1/en not_active Ceased
- 2015-06-22 CN CN202510186602.9A patent/CN120032652A/zh active Pending
- 2015-06-22 KR KR1020227026372A patent/KR102655047B1/ko active Active
- 2015-06-22 KR KR1020247011011A patent/KR20240047489A/ko active Pending
- 2015-06-22 EP EP15732579.6A patent/EP3161821B1/en active Active
- 2015-06-26 TW TW112108235A patent/TW202403729A/zh unknown
- 2015-06-26 TW TW104120628A patent/TWI681385B/zh active
- 2015-06-26 TW TW110123995A patent/TWI797658B/zh active
- 2015-06-26 TW TW108142370A patent/TWI735083B/zh active
-
2018
- 2018-02-07 US US15/891,066 patent/US10224044B2/en active Active
- 2018-12-03 US US16/208,284 patent/US10621995B2/en active Active
-
2019
- 2019-12-27 JP JP2019237723A patent/JP6872002B2/ja active Active
-
2021
- 2021-04-16 JP JP2021069477A patent/JP7275191B2/ja active Active
-
2023
- 2023-05-02 JP JP2023076033A patent/JP7516610B2/ja active Active
-
2024
- 2024-07-03 JP JP2024107100A patent/JP7757471B2/ja active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106663434B (zh) * | 2014-06-27 | 2021-09-28 | 杜比国际公司 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
| CN113793617A (zh) * | 2014-06-27 | 2021-12-14 | 杜比国际公司 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
| CN113793618A (zh) * | 2014-06-27 | 2021-12-14 | 杜比国际公司 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
| CN113808599A (zh) * | 2014-06-27 | 2021-12-17 | 杜比国际公司 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
| CN113808600A (zh) * | 2014-06-27 | 2021-12-17 | 杜比国际公司 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
Also Published As
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112216292B (zh) | 声音或声场的压缩hoa声音表示的解码方法和装置 | |
| CN110415712B (zh) | 用于解码声音或声场的高阶高保真度立体声响复制(hoa)表示的方法 | |
| CN112951254B (zh) | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法和设备 | |
| CN113808598B (zh) | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 | |
| HK40064597A (en) | Method for determining for the compression of an hoa data frame representation a lowest integer number of bits required for representing non-differential gain values | |
| HK40064596A (en) | Method for determining for the compression of an hoa data frame representation a lowest integer number of bits required for representing non-differential gain values | |
| HK40064516A (en) | Method for determining for the compression of an hoa data frame representation a lowest integer number of bits required for representing non-differential gain values | |
| HK40053165A (en) | Method and apparatus for determining for the compression of an hoa data frame representation a lowest integer number of bits required for representing non-differential gain values | |
| HK40050669A (en) | Method and apparatus for determining for the compression of an hoa data frame representation a lowest integer number of bits required for representing non-differential gain values | |
| HK40045794B (en) | Method and apparatus for determining for the compression of an hoa data frame representation a lowest integer number of bits required for representing non-differential gain values | |
| HK40039421A (en) | Method and apparatus for decoding a compressed hoa sound representation of a sound or sound field | |
| HK40039253A (en) | Method and apparatus for decoding a higher order ambisonics (hoa) representation of a sound or soundfield | |
| HK40045794A (en) | Method and apparatus for determining for the compression of an hoa data frame representation a lowest integer number of bits required for representing non-differential gain values | |
| HK40010362A (en) | Method for decoding a higher order ambisonics (hoa) representation of a sound or soundfield | |
| HK40013036A (en) | Method for decoding a higher order ambisonics (hoa) representation of a sound or soundfield | |
| HK40014969B (en) | Method for decoding a higher order ambisonics (hoa) representation of a sound or soundfield | |
| HK40014969A (en) | Method for decoding a higher order ambisonics (hoa) representation of a sound or soundfield | |
| HK1233104A1 (en) | Apparatus for determining for the compression of an hoa data frame representation a lowest integer number of bits required for representing non-differential gain values | |
| HK1233043A1 (en) | Method for determining for the compression of an hoa data frame representation a lowest integer number of bits required for representing non-differential gain values | |
| HK1233044A1 (en) | Method and apparatus for determining for the compression of an hoa data frame representation a lowest integer number of bits required for representing non-differential gain values | |
| HK1238407A1 (en) | Coded hoa data frame representation that includes non-differential gain values associated with channel signals of specific ones of the data frames of an hoa data frame representation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 40064516 Country of ref document: HK |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |