JP7479062B2 - 指数関数的分割の方法およびシステム - Google Patents

指数関数的分割の方法およびシステム Download PDF

Info

Publication number
JP7479062B2
JP7479062B2 JP2021542084A JP2021542084A JP7479062B2 JP 7479062 B2 JP7479062 B2 JP 7479062B2 JP 2021542084 A JP2021542084 A JP 2021542084A JP 2021542084 A JP2021542084 A JP 2021542084A JP 7479062 B2 JP7479062 B2 JP 7479062B2
Authority
JP
Japan
Prior art keywords
block
region
exponential
coding tree
decoder
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
Application number
JP2021542084A
Other languages
English (en)
Japanese (ja)
Other versions
JPWO2020072494A5 (https=
JP2022508522A (ja
JP2022508522A5 (https=
Inventor
ハリ カルバ，
ボリヴォイェ ファート，
Original Assignee
オーピー ソリューションズ， エルエルシー
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by オーピー ソリューションズ， エルエルシー filed Critical オーピー ソリューションズ， エルエルシー
Publication of JP2022508522A publication Critical patent/JP2022508522A/ja
Publication of JPWO2020072494A5 publication Critical patent/JPWO2020072494A5/ja
Publication of JP2022508522A5 publication Critical patent/JP2022508522A5/ja
Priority to JP2024066091A priority Critical patent/JP7836108B2/ja
Application granted granted Critical
Publication of JP7479062B2 publication Critical patent/JP7479062B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/119—Adaptive subdivision aspects, e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/136—Incoming video signal characteristics or properties
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/124—Quantisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/1883—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit relating to sub-band structure, e.g. hierarchical level, directional tree, e.g. low-high [LH], high-low [HL], high-high [HH]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/593—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
    • H04N19/619—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding the transform being operated outside the prediction loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H04N19/91—Entropy coding, e.g. variable length coding [VLC] or arithmetic coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H04N19/96—Tree coding, e.g. quad-tree coding

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Error Detection And Correction (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
JP2021542084A 2018-10-01 2019-10-01 指数関数的分割の方法およびシステム Active JP7479062B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2024066091A JP7836108B2 (ja) 2018-10-01 2024-04-16 指数関数的分割の方法およびシステム

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US201862739531P 2018-10-01 2018-10-01
US201862739446P 2018-10-01 2018-10-01
US201862739677P 2018-10-01 2018-10-01
US62/739,446 2018-10-01
US62/739,677 2018-10-01
US62/739,531 2018-10-01
PCT/US2019/054069 WO2020072494A1 (en) 2018-10-01 2019-10-01 Methods and systems of exponential partitioning

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2024066091A Division JP7836108B2 (ja) 2018-10-01 2024-04-16 指数関数的分割の方法およびシステム

Publications (4)

Publication Number Publication Date
JP2022508522A JP2022508522A (ja) 2022-01-19
JPWO2020072494A5 JPWO2020072494A5 (https=) 2022-10-12
JP2022508522A5 JP2022508522A5 (https=) 2022-10-12
JP7479062B2 true JP7479062B2 (ja) 2024-05-08

Family

ID=70054787

Family Applications (2)

Application Number Title Priority Date Filing Date
JP2021542084A Active JP7479062B2 (ja) 2018-10-01 2019-10-01 指数関数的分割の方法およびシステム
JP2024066091A Active JP7836108B2 (ja) 2018-10-01 2024-04-16 指数関数的分割の方法およびシステム

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP2024066091A Active JP7836108B2 (ja) 2018-10-01 2024-04-16 指数関数的分割の方法およびシステム

Country Status (10)

Country Link
US (1) US20210218977A1 (https=)
EP (1) EP3861732A4 (https=)
JP (2) JP7479062B2 (https=)
KR (2) KR20210089654A (https=)
CN (1) CN113039793A (https=)
BR (1) BR112021006349A2 (https=)
MX (2) MX2021003854A (https=)
PH (1) PH12021550727A1 (https=)
SG (1) SG11202103372XA (https=)
WO (1) WO2020072494A1 (https=)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112602324B (zh) 2018-06-22 2024-07-23 Op方案有限责任公司 块水平几何划分
SG11202108103WA (en) 2019-01-28 2021-08-30 Op Solutions Llc Inter prediction in geometric partitioning with an adaptive number of regions
CN113597757B (zh) 2019-01-28 2025-05-27 Op方案有限责任公司 具有区域数自适应的几何划分的形状自适应离散余弦变换
WO2020159988A1 (en) * 2019-01-28 2020-08-06 Op Solutions, Llc Inter prediction in exponential partitioning
CN119544999B (zh) * 2020-03-31 2025-10-10 Oppo广东移动通信有限公司 帧间预测方法、编码器、解码器及计算机可读存储介质
WO2025077156A1 (zh) * 2023-10-08 2025-04-17 海信视像科技股份有限公司 视频编码方法、视频解码方法及装置
EP4629618A1 (en) * 2024-04-04 2025-10-08 InterDigital CE Patent Holdings, SAS Merge mode sgpm

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090196342A1 (en) 2006-08-02 2009-08-06 Oscar Divorra Escoda Adaptive Geometric Partitioning For Video Encoding
US20140247871A1 (en) 2011-11-11 2014-09-04 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Adaptive partition coding
US20150229957A1 (en) 2012-09-24 2015-08-13 Qualcomm Incorporated Depth map coding
US20180278932A1 (en) 2013-11-19 2018-09-27 Google Llc Method and apparatus for encoding a block using a partitioned block and weighted prediction values
WO2020159988A1 (en) 2019-01-28 2020-08-06 Op Solutions, Llc Inter prediction in exponential partitioning

Family Cites Families (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6292582B1 (en) * 1996-05-31 2001-09-18 Lin Youling Method and system for identifying defects in a semiconductor
KR100727972B1 (ko) * 2005-09-06 2007-06-14 삼성전자주식회사 영상의 인트라 예측 부호화, 복호화 방법 및 장치
US8165205B2 (en) * 2005-09-16 2012-04-24 Sony Corporation Natural shaped regions for motion compensation
US8422555B2 (en) * 2006-07-11 2013-04-16 Nokia Corporation Scalable video coding
US8068695B2 (en) * 2008-11-07 2011-11-29 Xerox Corporation Positional distortion compensation
US8810578B2 (en) * 2009-04-27 2014-08-19 Blackberry Limited Conversion of SWF shape definitions for vector graphics rendering
US8879632B2 (en) * 2010-02-18 2014-11-04 Qualcomm Incorporated Fixed point implementation for geometric motion partitioning
EP2559248A2 (en) * 2010-04-12 2013-02-20 Qualcomm Incorporated Fixed point implementation for geometric motion partitioning
US9020043B2 (en) * 2010-05-10 2015-04-28 Google Inc. Pathway indexing in flexible partitioning
JP2012023597A (ja) * 2010-07-15 2012-02-02 Sony Corp 画像処理装置及び画像処理方法
EP2421266A1 (en) * 2010-08-19 2012-02-22 Thomson Licensing Method for reconstructing a current block of an image and corresponding encoding method, corresponding devices as well as storage medium carrying an images encoded in a bit stream
US9060174B2 (en) * 2010-12-28 2015-06-16 Fish Dive, Inc. Method and system for selectively breaking prediction in video coding
US9807424B2 (en) * 2011-01-10 2017-10-31 Qualcomm Incorporated Adaptive selection of region size for identification of samples in a transition zone for overlapped block motion compensation
US8897527B2 (en) * 2011-06-07 2014-11-25 Varian Medical Systems, Inc. Motion-blurred imaging enhancement method and system
KR20250111411A (ko) 2011-11-11 2025-07-22 지이 비디오 컴프레션, 엘엘씨 분할 코딩을 이용한 효과적인 예측
EP2813079B1 (en) * 2012-06-20 2019-08-07 HFI Innovation Inc. Method and apparatus of inter-layer prediction for scalable video coding
GB2503691B (en) * 2012-07-04 2019-08-14 Advanced Risc Mach Ltd Methods of and apparatus for encoding and decoding data
US10616607B2 (en) * 2013-02-25 2020-04-07 Lg Electronics Inc. Method for encoding video of multi-layer structure supporting scalability and method for decoding same and apparatus therefor
JP2014207536A (ja) * 2013-04-12 2014-10-30 ソニー株式会社 画像処理装置および方法
WO2014172387A1 (en) * 2013-04-15 2014-10-23 Huawei Technologies Co., Ltd. Method and apparatus of depth prediction mode selection
KR102003460B1 (ko) * 2013-08-27 2019-07-24 한화테크윈 주식회사 왜곡제거장치 및 방법
HK1218820A1 (zh) * 2013-09-27 2017-03-10 高通股份有限公司 用於深度幀內預測模式的殘餘譯碼
CA2925183C (en) * 2013-10-14 2020-03-10 Microsoft Technology Licensing, Llc Features of base color index map mode for video and image coding and decoding
CN106688238B (zh) * 2013-10-17 2019-12-17 华为技术有限公司 改进后的深度图帧内编码的参考像素点选择和滤波
JP6268989B2 (ja) * 2013-11-29 2018-01-31 富士通株式会社 動画像符号化装置、動画像符号化方法及び動画像符号化用コンピュータプログラム
US9756359B2 (en) * 2013-12-16 2017-09-05 Qualcomm Incorporated Large blocks and depth modeling modes (DMM'S) in 3D video coding
JP2015173404A (ja) * 2014-03-12 2015-10-01 富士通株式会社 動画像符号化装置、動画像符号化方法及び動画像符号化用コンピュータプログラム
US9147232B1 (en) * 2014-03-26 2015-09-29 Eastman Kodak Company Reducing halo artifacts in electrophotographic printing systems
US10038919B2 (en) * 2014-05-29 2018-07-31 Apple Inc. In loop chroma deblocking filter
US10136141B2 (en) * 2014-06-11 2018-11-20 Qualcomm Incorporated Determining quantization parameter (QP) values and delta QP values for palette coded blocks in video coding
CN106664423B (zh) * 2014-10-08 2020-04-07 Lg电子株式会社 视频编译中的深度图片编译方法
WO2016074746A1 (en) * 2014-11-14 2016-05-19 Huawei Technologies Co., Ltd. Systems and methods for mask based processing of a block of a digital image
US10425659B2 (en) * 2015-01-30 2019-09-24 Qualcomm Incorporated Coding escape pixels for palette coding
EP3273694A4 (en) 2015-05-12 2018-04-25 Samsung Electronics Co., Ltd. Image decoding method for performing intra prediction and device thereof, and image encoding method for performing intra prediction and device thereof
EP3181050B1 (en) * 2015-12-18 2020-02-12 Episurf IP Management AB System and method for creating a decision support material indicating damage to an anatomical joint
US20170359596A1 (en) * 2016-06-09 2017-12-14 Apple Inc. Video coding techniques employing multiple resolution
US10116957B2 (en) * 2016-09-15 2018-10-30 Google Inc. Dual filter type for motion compensated prediction in video coding
EP3529984B1 (en) * 2016-10-19 2024-11-27 Huawei Technologies Co., Ltd. Apparatuses and methods for encoding and decoding a video coding block of a video signal
US10694181B2 (en) * 2017-01-27 2020-06-23 Qualcomm Incorporated Bilateral filters in video coding with reduced complexity
GB2560720B (en) * 2017-03-20 2021-08-25 Canon Kk Method and apparatus for encoding and transmitting at least a spatial part of a video sequence
US10789682B2 (en) * 2017-06-16 2020-09-29 The Boeing Company Apparatus, system, and method for enhancing an image
WO2019010267A1 (en) * 2017-07-05 2019-01-10 Arris Enterprises Llc POST-FILTERING FOR WEIGHTED ANGULAR PREDICTION
US10223912B1 (en) * 2017-11-21 2019-03-05 Aptiv Technologies Limited Virtual barrier system
US11378961B2 (en) * 2018-04-17 2022-07-05 Baidu Usa Llc Method for generating prediction trajectories of obstacles for autonomous driving vehicles
US11199847B2 (en) * 2018-09-26 2021-12-14 Baidu Usa Llc Curvature corrected path sampling system for autonomous driving vehicles

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090196342A1 (en) 2006-08-02 2009-08-06 Oscar Divorra Escoda Adaptive Geometric Partitioning For Video Encoding
US20140247871A1 (en) 2011-11-11 2014-09-04 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Adaptive partition coding
US20150229957A1 (en) 2012-09-24 2015-08-13 Qualcomm Incorporated Depth map coding
US20180278932A1 (en) 2013-11-19 2018-09-27 Google Llc Method and apparatus for encoding a block using a partitioned block and weighted prediction values
WO2020159988A1 (en) 2019-01-28 2020-08-06 Op Solutions, Llc Inter prediction in exponential partitioning

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Oscar Divorra, Peng Yin, and Cristina Gomila，Geometry-adaptive Block Partioning，ITU - Telecommunications Standardization Sector STUDY GROUP 16 Question 6 Video Coding Experts Group (VCEG)，VCEG-AF10，32nd Meeting: San Jose, CA，2007年04月，pp.1-8

Also Published As

Publication number Publication date
JP7836108B2 (ja) 2026-03-26
WO2020072494A1 (en) 2020-04-09
PH12021550727A1 (en) 2021-12-06
JP2024088802A (ja) 2024-07-02
SG11202103372XA (en) 2021-04-29
EP3861732A1 (en) 2021-08-11
US20210218977A1 (en) 2021-07-15
KR20210089654A (ko) 2021-07-16
CN113039793A (zh) 2021-06-25
KR20250048380A (ko) 2025-04-08
EP3861732A4 (en) 2022-07-06
MX2021003854A (es) 2021-05-27
JP2022508522A (ja) 2022-01-19
MX2025001029A (es) 2025-03-07
BR112021006349A2 (pt) 2021-07-06

Similar Documents

Publication Publication Date Title
CN112602324B (zh) 块水平几何划分
JP7479062B2 (ja) 指数関数的分割の方法およびシステム
JP6931690B2 (ja) コンテンツをエンコードする方法及び計算装置
KR20210035152A (ko) 영상의 부호화/복호화 방법 및 이를 이용하는 장치
JP7646258B2 (ja) 適応的な数の領域を伴う幾何学的分割のための形状適応離散コサイン変換
JP7650526B2 (ja) 非直線の非長方形分割を用いた幾何学的分割におけるインター予測
KR102582887B1 (ko) 동화상 부호화 장치, 동화상 복호 장치, 동화상 부호화 방법 및 동화상 복호 방법
RU2788631C2 (ru) Способы и системы экспоненциального разбиения
US20250350737A1 (en) Systems and methods for encoding with non-rectangular partitioning
CN113056913B (zh) 包括添加非相邻对角空间合并候选的构造合并候选列表的方法和系统
RU2825342C1 (ru) Видеокодер, видеодекодер, способ кодирования видео, способ декодирования видео
HK40042082A (en) Block level geometric partitioning
RU2814971C2 (ru) Видеокодер, видеодекодер, способ кодирования видео, способ декодирования видео
RU2829493C2 (ru) Адаптивное по форме дискретное косинусное преобразование для геометрического разбиения с адаптивным количеством областей
RU2771669C1 (ru) Видеокодер, видеодекодер, способ кодирования видео, способ декодирования видео
HK40042082B (zh) 块水平几何划分

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20221003

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20221003

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20230802

A601 Written request for extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A601

Effective date: 20231101

A601 Written request for extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A601

Effective date: 20231228

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20240131

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20240220

A601 Written request for extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A601

Effective date: 20240321

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20240416

R150 Certificate of patent or registration of utility model

Ref document number: 7479062

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150