RU2693329C2 - Способ и устройство отображения с оптимизацией перераспределения пикселей - Google Patents
Способ и устройство отображения с оптимизацией перераспределения пикселей Download PDFInfo
- Publication number
- RU2693329C2 RU2693329C2 RU2017101239A RU2017101239A RU2693329C2 RU 2693329 C2 RU2693329 C2 RU 2693329C2 RU 2017101239 A RU2017101239 A RU 2017101239A RU 2017101239 A RU2017101239 A RU 2017101239A RU 2693329 C2 RU2693329 C2 RU 2693329C2
- Authority
- RU
- Russia
- Prior art keywords
- display device
- image
- viewer
- pixel density
- geometric transformation
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
- G06T3/4023—Scaling of whole images or parts thereof, e.g. expanding or contracting based on decimating pixels or lines of pixels; based on inserting pixels or lines of pixels
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0176—Head mounted characterised by mechanical features
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/02—Viewing or reading apparatus
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
- G06F3/012—Head tracking input arrangements
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
- G06F3/013—Eye tracking input arrangements
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/04—Context-preserving transformations, e.g. by using an importance map
- G06T3/053—Detail-in-context presentations
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/18—Eye characteristics, e.g. of the iris
- G06V40/19—Sensors therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
- H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
- H04N3/22—Circuits for controlling dimensions, shape or centering of picture on screen
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/014—Head-up displays characterised by optical features comprising information/image processing systems
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0147—Head-up displays characterised by optical features comprising a device modifying the resolution of the displayed image
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B2027/0178—Eyeglass type
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0179—Display position adjusting means not related to the information to be displayed
- G02B2027/0187—Display position adjusting means not related to the information to be displayed slaved to motion of at least a part of the body of the user, e.g. head, eye
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0093—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20016—Hierarchical, coarse-to-fine, multiscale or multiresolution image processing; Pyramid transform
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20092—Interactive image processing based on input by user
- G06T2207/20104—Interactive definition of region of interest [ROI]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Optics & Photonics (AREA)
- Human Computer Interaction (AREA)
- General Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- General Health & Medical Sciences (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Data Mining & Analysis (AREA)
- Evolutionary Biology (AREA)
- Evolutionary Computation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Signal Processing (AREA)
- Artificial Intelligence (AREA)
- Bioinformatics & Computational Biology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Image Processing (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP14305923.6 | 2014-06-17 | ||
| EP14305923.6A EP2958074A1 (en) | 2014-06-17 | 2014-06-17 | A method and a display device with pixel repartition optimization |
| PCT/EP2015/063435 WO2015193287A1 (en) | 2014-06-17 | 2015-06-16 | A method and a display device with pixel repartition optimization |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| RU2017101239A RU2017101239A (ru) | 2018-07-17 |
| RU2017101239A3 RU2017101239A3 (enExample) | 2018-12-13 |
| RU2693329C2 true RU2693329C2 (ru) | 2019-07-02 |
Family
ID=51162628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2017101239A RU2693329C2 (ru) | 2014-06-17 | 2015-06-16 | Способ и устройство отображения с оптимизацией перераспределения пикселей |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US11593914B2 (enExample) |
| EP (2) | EP2958074A1 (enExample) |
| JP (1) | JP6684728B2 (enExample) |
| KR (1) | KR102503029B1 (enExample) |
| CN (1) | CN106461951B (enExample) |
| CA (1) | CA2952710C (enExample) |
| MX (1) | MX371370B (enExample) |
| RU (1) | RU2693329C2 (enExample) |
| TW (1) | TWI660201B (enExample) |
| WO (1) | WO2015193287A1 (enExample) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107209390A (zh) * | 2015-02-12 | 2017-09-26 | 谷歌公司 | 组合高分辨率窄场显示和中分辨率宽场显示 |
| CN106293047B (zh) * | 2015-06-26 | 2020-01-10 | 微软技术许可有限责任公司 | 通过动态分辨率缩放来减少移动设备的功耗 |
| US10958834B2 (en) | 2016-07-22 | 2021-03-23 | Immervision, Inc. | Method to capture, store, distribute, share, stream and display panoramic image or video |
| JP6844210B2 (ja) * | 2016-11-16 | 2021-03-17 | 凸版印刷株式会社 | 視覚的顕著性マップ生成装置、視覚的顕著性マップ生成方法及びプログラム |
| US10859812B2 (en) * | 2017-03-22 | 2020-12-08 | Magic Leap, Inc. | Dynamic field of view variable focus display system |
| WO2018217253A1 (en) * | 2017-05-26 | 2018-11-29 | Google Llc | Near-eye display with sparse sampling super-resolution |
| CN110832442A (zh) * | 2017-06-09 | 2020-02-21 | 索尼互动娱乐股份有限公司 | 注视点渲染系统中的优化的阴影和自适应网状蒙皮 |
| US20190079284A1 (en) * | 2017-09-08 | 2019-03-14 | Mediatek Inc. | Variable DPI Across A Display And Control Thereof |
| US10521881B1 (en) * | 2017-09-28 | 2019-12-31 | Apple Inc. | Error concealment for a head-mountable device |
| US10511842B2 (en) * | 2017-10-06 | 2019-12-17 | Qualcomm Incorporated | System and method for foveated compression of image frames in a system on a chip |
| TWI829656B (zh) | 2017-10-22 | 2024-01-21 | 以色列商魯姆斯有限公司 | 採用光具座的頭戴式增強現實設備 |
| CN111557092B (zh) | 2017-12-10 | 2022-09-27 | 鲁姆斯有限公司 | 图像投影仪 |
| WO2019221105A1 (ja) * | 2018-05-15 | 2019-11-21 | ソニーセミコンダクタソリューションズ株式会社 | 表示装置 |
| IL259518B2 (en) * | 2018-05-22 | 2023-04-01 | Lumus Ltd | Optical system and method for improving light field uniformity |
| US11221494B2 (en) * | 2018-12-10 | 2022-01-11 | Facebook Technologies, Llc | Adaptive viewport optical display systems and methods |
| EP3990967B1 (en) | 2019-06-27 | 2025-02-12 | Lumus Ltd. | Apparatus and methods for eye tracking based on eye imaging via a light-guide optical element |
| CN114175630B (zh) * | 2019-07-28 | 2024-11-01 | 谷歌有限责任公司 | 利用注视点网格渲染沉浸式视频内容的方法、系统和介质 |
| EP4538765A3 (en) | 2019-12-08 | 2025-06-18 | Lumus Ltd. | Optical systems with compact image projector |
| JP7706772B2 (ja) | 2019-12-25 | 2025-07-14 | ルムス エルティーディー. | 光ガイド光学素子と関連付けられた光学配置を使用して、眼からの光を方向転換することに基づく、アイトラッキングのための光学システムおよび方法 |
| CN115668037A (zh) * | 2020-05-27 | 2023-01-31 | 索尼集团公司 | 显示装置和显示方法 |
| US12039958B2 (en) | 2020-08-03 | 2024-07-16 | Arizona Board Of Regents On Behalf Of The University Of Arizona | Perceptual-driven foveated displays |
| TW202232186A (zh) | 2020-12-20 | 2022-08-16 | 以色列商魯姆斯有限公司 | 圖像投影儀 |
| US11899215B1 (en) * | 2022-07-29 | 2024-02-13 | Htc Corporation | Head mounted display, display device and image display method thereof |
| EP4542343A4 (en) | 2022-12-29 | 2025-11-19 | Samsung Electronics Co Ltd | VISIO-HELMET DEVICE INCLUDING AN EYE-TRACKING SENSOR AND OPERATING METHOD FOR VISIO-HELMET DEVICE |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020063807A1 (en) * | 1999-04-19 | 2002-05-30 | Neal Margulis | Method for Performing Image Transforms in a Digital Display System |
| RU2322771C2 (ru) * | 2005-04-25 | 2008-04-20 | Святослав Иванович АРСЕНИЧ | Стереопроекционная система |
| WO2012082807A2 (en) * | 2010-12-17 | 2012-06-21 | Microsoft Corporation | Optimized focal area for augmented reality displays |
| US20130016413A1 (en) * | 2011-07-12 | 2013-01-17 | Google Inc. | Whole image scanning mirror display system |
| WO2013090100A1 (en) * | 2011-12-12 | 2013-06-20 | John Clavin | Connecting head mounted displays to external displays and other communication networks |
| US20130235169A1 (en) * | 2011-06-16 | 2013-09-12 | Panasonic Corporation | Head-mounted display and position gap adjustment method |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01252993A (ja) | 1988-04-01 | 1989-10-09 | Nippon Telegr & Teleph Corp <Ntt> | 画像表示方法 |
| JPH0638219A (ja) | 1992-07-20 | 1994-02-10 | Olympus Optical Co Ltd | 映像表示装置 |
| JP2896291B2 (ja) | 1993-06-14 | 1999-05-31 | 株式会社エイ・ティ・アール通信システム研究所 | 画像表示装置 |
| JP2638444B2 (ja) * | 1993-10-04 | 1997-08-06 | 日本電気株式会社 | 頭部搭載型画像表示装置 |
| JP3283367B2 (ja) * | 1993-11-11 | 2002-05-20 | 三菱プレシジョン株式会社 | 潜望鏡映像表示装置 |
| JP3604443B2 (ja) * | 1995-02-28 | 2004-12-22 | 株式会社島津製作所 | テレビジョンシステム |
| US6734838B1 (en) | 1998-05-18 | 2004-05-11 | Dimension Technologies Inc. | Enhanced resolution for image generation |
| JP2000310747A (ja) | 1999-02-26 | 2000-11-07 | Mr System Kenkyusho:Kk | 画像観察装置 |
| JP4374708B2 (ja) * | 2000-03-30 | 2009-12-02 | 株式会社デンソー | 網膜走査ディスプレイ装置及び光走査装置 |
| JP2004523795A (ja) | 2001-02-21 | 2004-08-05 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | ビデオ信号を処理する表示システム |
| US7068813B2 (en) | 2001-03-28 | 2006-06-27 | Koninklijke Philips Electronics N.V. | Method and apparatus for eye gazing smart display |
| US20060145945A1 (en) | 2002-01-07 | 2006-07-06 | Lewis John R | Scanned beam system with distortion compensation |
| US7495638B2 (en) * | 2003-05-13 | 2009-02-24 | Research Triangle Institute | Visual display with increased field of view |
| JP2009510540A (ja) * | 2006-10-31 | 2009-03-12 | ビ−エイイ− システムズ パブリック リミテッド カンパニ− | 画像表示システム |
| IL196078A (en) | 2007-12-20 | 2014-09-30 | Raytheon Co | Imaging system |
| US8941559B2 (en) * | 2010-09-21 | 2015-01-27 | Microsoft Corporation | Opacity filter for display device |
| US9529191B2 (en) * | 2010-11-03 | 2016-12-27 | Trex Enterprises Corporation | Dynamic foveal vision display |
| US8749892B2 (en) | 2011-06-17 | 2014-06-10 | DigitalOptics Corporation Europe Limited | Auto-focus actuator for field curvature correction of zoom lenses |
| US20130215147A1 (en) | 2012-02-17 | 2013-08-22 | Esight Corp. | Apparatus and Method for Enhancing Human Visual Performance in a Head Worn Video System |
| US20130246967A1 (en) * | 2012-03-15 | 2013-09-19 | Google Inc. | Head-Tracked User Interaction with Graphical Interface |
| US9720231B2 (en) * | 2012-09-26 | 2017-08-01 | Dolby Laboratories Licensing Corporation | Display, imaging system and controller for eyewear display device |
| JP5935640B2 (ja) | 2012-10-01 | 2016-06-15 | ソニー株式会社 | 情報処理装置、表示制御方法及びプログラム |
| CN103593051B (zh) * | 2013-11-11 | 2017-02-15 | 百度在线网络技术(北京)有限公司 | 头戴式显示设备 |
-
2014
- 2014-06-17 EP EP14305923.6A patent/EP2958074A1/en not_active Withdrawn
-
2015
- 2015-05-15 TW TW104115461A patent/TWI660201B/zh active
- 2015-06-16 WO PCT/EP2015/063435 patent/WO2015193287A1/en not_active Ceased
- 2015-06-16 KR KR1020167035037A patent/KR102503029B1/ko active Active
- 2015-06-16 JP JP2016573551A patent/JP6684728B2/ja active Active
- 2015-06-16 CA CA2952710A patent/CA2952710C/en active Active
- 2015-06-16 CN CN201580031912.8A patent/CN106461951B/zh active Active
- 2015-06-16 MX MX2016016718A patent/MX371370B/es active IP Right Grant
- 2015-06-16 EP EP15728878.8A patent/EP3158531B1/en active Active
- 2015-06-16 US US15/318,997 patent/US11593914B2/en active Active
- 2015-06-16 RU RU2017101239A patent/RU2693329C2/ru active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020063807A1 (en) * | 1999-04-19 | 2002-05-30 | Neal Margulis | Method for Performing Image Transforms in a Digital Display System |
| RU2322771C2 (ru) * | 2005-04-25 | 2008-04-20 | Святослав Иванович АРСЕНИЧ | Стереопроекционная система |
| WO2012082807A2 (en) * | 2010-12-17 | 2012-06-21 | Microsoft Corporation | Optimized focal area for augmented reality displays |
| US20130235169A1 (en) * | 2011-06-16 | 2013-09-12 | Panasonic Corporation | Head-mounted display and position gap adjustment method |
| US20130016413A1 (en) * | 2011-07-12 | 2013-01-17 | Google Inc. | Whole image scanning mirror display system |
| WO2013090100A1 (en) * | 2011-12-12 | 2013-06-20 | John Clavin | Connecting head mounted displays to external displays and other communication networks |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3158531B1 (en) | 2024-04-24 |
| KR102503029B1 (ko) | 2023-02-23 |
| TWI660201B (zh) | 2019-05-21 |
| KR20170020351A (ko) | 2017-02-22 |
| MX371370B (es) | 2020-01-28 |
| EP2958074A1 (en) | 2015-12-23 |
| CN106461951A (zh) | 2017-02-22 |
| US11593914B2 (en) | 2023-02-28 |
| EP3158531A1 (en) | 2017-04-26 |
| JP2017522591A (ja) | 2017-08-10 |
| MX2016016718A (es) | 2017-04-13 |
| TW201600887A (zh) | 2016-01-01 |
| CA2952710A1 (en) | 2015-12-23 |
| RU2017101239A (ru) | 2018-07-17 |
| JP6684728B2 (ja) | 2020-04-22 |
| CA2952710C (en) | 2024-01-02 |
| WO2015193287A1 (en) | 2015-12-23 |
| CN106461951B (zh) | 2020-07-17 |
| US20170132757A1 (en) | 2017-05-11 |
| RU2017101239A3 (enExample) | 2018-12-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2693329C2 (ru) | Способ и устройство отображения с оптимизацией перераспределения пикселей | |
| US11727695B2 (en) | Language element vision augmentation methods and devices | |
| US20220222790A1 (en) | Gaze Direction-Based Adaptive Pre-Filtering of Video Data | |
| US11217021B2 (en) | Display system having sensors | |
| CN111602082B (zh) | 用于包括传感器集成电路的头戴式显示器的位置跟踪系统 | |
| US20190331914A1 (en) | Experience Sharing with Region-Of-Interest Selection | |
| JP2018523321A (ja) | 眼と異なるレンズの位置を補正する、実際のシーンを見るための仮想眼鏡セット | |
| US12423841B2 (en) | Scene camera retargeting | |
| KR102204212B1 (ko) | 실감형 콘텐츠 제공 장치 및 방법 | |
| Konrad et al. | Gazegpt: Augmenting human capabilities using gaze-contingent contextual ai for smart eyewear | |
| CN115985209B (zh) | 可穿戴显示设备、控制方法、装置、电子设备和存储介质 | |
| US10771774B1 (en) | Display apparatus and method of producing images having spatially-variable angular resolutions | |
| US10083675B2 (en) | Display control method and display control apparatus | |
| US20220180473A1 (en) | Frame Rate Extrapolation | |
| US20250245932A1 (en) | Tile processing and transformation for video see-through (vst) extended reality (xr) | |
| HK1236670A1 (en) | A method and a display device with pixel repartition optimization | |
| HK1236670B (en) | A method and a display device with pixel repartition optimization | |
| CN120722575A (zh) | 使用基于每度硬件像素估计的自动面板增强来改进扩展现实渲染及其系统和使用方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PD4A | Correction of name of patent owner | ||
| PC41 | Official registration of the transfer of exclusive right |
Effective date: 20200213 |