CN108735165B - 一种水墨屏背光系统及其调节方法 - Google Patents

一种水墨屏背光系统及其调节方法 Download PDF

Info

Publication number
CN108735165B
CN108735165B CN201710262943.5A CN201710262943A CN108735165B CN 108735165 B CN108735165 B CN 108735165B CN 201710262943 A CN201710262943 A CN 201710262943A CN 108735165 B CN108735165 B CN 108735165B
Authority
CN
China
Prior art keywords
backlight
light
eink
module
screen
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
CN201710262943.5A
Other languages
English (en)
Other versions
CN108735165A (zh
Inventor
刘磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI ZHENGDA HIMALAYAN NETWORK TECHNOLOGY CO., LTD.
Original Assignee
Shanghai Himalaya Technology Co ltd
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 Shanghai Himalaya Technology Co ltd filed Critical Shanghai Himalaya Technology Co ltd
Priority to CN201710262943.5A priority Critical patent/CN108735165B/zh
Publication of CN108735165A publication Critical patent/CN108735165A/zh
Application granted granted Critical
Publication of CN108735165B publication Critical patent/CN108735165B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3433Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
    • G09G3/344Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on particles moving in a fluid or in a gas, e.g. electrophoretic devices
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406Control of illumination source

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

本发明公开了一种水墨屏背光系统,包括EINK面板、光传感器和背光模块,EINK面板包括具有0‑255灰阶显示能力的EINK屏和光感算法模块,背光模块包括背光光源和用于调控背光光源亮度的背光控制模块;光感算法模块包括光感测试条和Framebuffer;光传感器位于EINK面板和背光模块之间,处于遮蔽状态,只接收垂直EINK面板投射的环境光。一种水墨屏背光调节方法,通过遮蔽状态的光传感器感应环境光指数,从而判断最佳的护眼阶段,进入护眼模式后,通过背光控制模块计算出的拟合灰度值,来调节出光线过暗情况下的最佳阅读亮度,来保护人眼收到损伤。

Description

一种水墨屏背光系统及其调节方法
技术领域
本发明涉及显示屏的控制技术,特别是一种水墨屏背光系统及其调节方法。
背景技术
目前随着平板电脑技术的发展,平板设备已经成为一个普及的智能终端,特别是在儿童教育领域,以iPad为代表的平板电脑有着非常重要的应用,很多教育应用服务都是通过平板电脑这一载体与用户进行交互,然后普通的平板电脑有着本身的缺点,LCD或者OLED发光屏的显示原理决定了其对儿童的眼睛会有损伤,长期使用导致近视散光等严重的问题,为了解决这一问题,以电子墨水屏为显示器件的平板电脑运应而生,电子墨水屏具有与天然纸张一样的显示特性,都是被动反光显示,对眼睛具有很好的保护作用,但是墨水屏是一种被动显示设备,那么在暗光的条件下,使用会比较困难,所以在一般的墨水屏显示设备上都会增加背光模块,以便在暗光的条件下进行使用,但是背光和被动反光所形成的显示效果会不一样,从而影响使用效果。
发明内容
本发明的目的在于提供一种水墨屏背光系统及其调节方法,利用埋在EINK面板下的光传感器,通过背光控制模块计算环境光通量来控制背光的发光量,从而达到护眼的目的。
一种水墨屏背光系统,其特征在于,包括EINK面板、光传感器和背光模块,EINK面板包括具有0-255灰阶显示能力的EINK屏和光感算法模块,背光模块包括背光光源和用于调控背光光源亮度的背光控制模块;光感算法模块包括光感测试条和Framebuffer;
光传感器位于EINK面板和背光模块之间,处于遮蔽状态,只接收垂直EINK面板投射的环境光。
优选地,所述的光感测试条用来实现灰阶测试,利用光感测试条0-255的变化测出一组光通量值。
优选地,所述的Framebuffer用来实现内容测试,通过Framebuffer读取EINK屏显示的图像,并计算EINK屏的平均灰阶值。
优选地,所述的背光光源为LED模组。
一种墨水屏背光调节方法,其特征在于,利用权利要求1到4的墨水屏背光系统,步骤包括:
S1:开启墨水屏,同时光传感器打开;
S2:光传感器通过对投射的光进行遮罩算法,得到环境光指数R;
S3:判断环境光指数R是否小于等于5000,是则进行下一步,否则结束进程;
S4:开启背光模块;
S5:判断环境光指数R是否小于等于2000,否则结束进程,是则进入下一步护眼模式;
S6:进入护眼模式开启光感算法模块;
S7:开启光感测试条,开始灰阶测试,同时记录光通量[x,y];
S8:开启framebuffer读取EINK屏显示的图像,开始内容测试得到平均灰阶值M;
S9:将光通量[x,y]和平均灰度值M进行拟合计算得到一个拟合灰度值P;
S10:背光控制模块根据灰度值P作为输出参数进行背光调节;
S11:再次返回到步骤S2进行判断。
优选地,所述的灰阶测试,利用光感测试条0-255的变化测出光通量,且光感测试条每隔2毫秒从0-255变化一次灰阶。
本发明的有益效果为:通过遮蔽状态的光传感器感应环境光指数,从而判断最佳的护眼阶段,进入护眼模式后,通过背光控制模块计算出的拟合灰度值,来调节出光线过暗情况下的最佳阅读亮度,来保护人眼收到损伤。
附图说明
图1为水墨屏背光系统示意图;
图2为水墨屏背光调节方法流程图。
具体实施方式
如图1所示为水墨屏背光系统示意图,包括:EINK面板100、光传感器200和背光模块300,EINK面板100包括具有0-255灰阶显示能力的EINK屏和光感算法模块,背光模块300包括背光光源和用于调控背光光源亮度的背光控制模块;光感算法模块包括光感测试条和Framebuffer;
光传感器200位于EINK面板100和背光模块300之间,如图1所示处于遮蔽状态,只接收垂直EINK面板100投射的环境光。
其中,光感测试条用来实现灰阶测试,利用光感测试条0-255的变化测出一组光通量值;Framebuffer用来实现内容测试,通过Framebuffer读取EINK屏显示的图像,并计算EINK屏的平均灰阶值。
其中,背光光源为LED模组。
如图2所示为水墨屏背光调节方法流程图,利用如图1所示的背光系统来实现此调节方法,具体步骤包括:
S1:开启墨水屏,同时光传感器打开;
S2:光传感器通过对投射的光进行遮罩算法,得到环境光指数R;
S3:判断环境光指数R是否小于等于5000,是则进行下一步,否则结束进程;
S4:开启背光模块;
S5:判断环境光指数R是否小于等于2000,否则结束进程,是则进入下一步护眼模式;
S6:进入护眼模式开启光感算法模块;
S7:开启光感测试条,开始灰阶测试,同时记录光通量[x,y];
S8:开启framebuffer读取EINK屏显示的图像,开始内容测试得到平均灰阶值M;
S9:将光通量[x,y]和平均灰度值M进行拟合计算得到一个拟合灰度值P;
S10:背光控制模块根据灰度值P作为输出参数进行背光调节;
S11:再次返回到步骤S2进行判断。
其中,灰阶测试,利用光感测试条0-255的变化测出光通量,且光感测试条每隔2毫秒从0-255变化一次灰阶。
其中,根据实验数据得出环境光指数R的对比值:
环境光定义 R值 模式
亮光环境 ≥20000 背光关
微光环境 ≤5000 背光开
弱光环境 ≤2000 护眼模式开

Claims (6)

1.一种水墨屏背光系统,其特征在于,包括EINK面板、光传感器和背光模块,EINK面板包括具有0-255灰阶显示能力的EINK屏和光感算法模块,背光模块包括背光光源和用于调控背光光源亮度的背光控制模块;光感算法模块包括光感测试条和Framebuffer;
光传感器位于EINK面板和背光模块之间,处于遮蔽状态,只接收垂直EINK面板投射的环境光。
2.根据权利要求1所述的一种水墨屏背光系统,其特征在于,所述的光感测试条用来实现灰阶测试,利用光感测试条0-255的变化测出一组光通量值。
3.根据权利要求1所述的一种水墨屏背光系统,其特征在于,所述的Framebuffer用来实现内容测试,通过Framebuffer读取EINK屏显示的图像,并计算EINK屏的平均灰阶值。
4.根据权利要求1所述的一种水墨屏背光系统,其特征在于,所述的背光光源为LED模组。
5.一种水墨屏背光调节方法,其特征在于,根据权利要求1-4任一项所述的水墨屏背光系统,步骤包括:
S1:开启水墨屏,同时光传感器打开;
S2:光传感器通过对投射的光进行遮罩算法,得到环境光指数R;
S3:判断环境光指数R是否小于等于5000,是则进行下一步,否则结束进程;
S4:开启背光模块;
S5:判断环境光指数R是否小于等于2000,否则结束进程,是则进入下一步护眼模式;
S6:进入护眼模式开启光感算法模块;
S7:开启光感测试条,开始灰阶测试,同时记录光通量[x,y];
S8:开启Framebuffer读取EINK屏显示的图像,开始内容测试得到平均灰阶值M;
S9:将光通量[x,y]和平均灰度值M进行拟合计算得到一个拟合灰度值P;
S10:背光控制模块根据灰度值P作为输出参数进行背光调节;
S11:再次返回到步骤S2进行判断。
6.根据权利要求5所述的一种水墨屏背光调节方法,其特征在于,所述的灰阶测试,利用光感测试条0-255的变化测出光通量,且光感测试条每隔2毫秒从0-255变化一次灰阶。
CN201710262943.5A 2017-04-20 2017-04-20 一种水墨屏背光系统及其调节方法 Active CN108735165B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710262943.5A CN108735165B (zh) 2017-04-20 2017-04-20 一种水墨屏背光系统及其调节方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710262943.5A CN108735165B (zh) 2017-04-20 2017-04-20 一种水墨屏背光系统及其调节方法

Publications (2)

Publication Number Publication Date
CN108735165A CN108735165A (zh) 2018-11-02
CN108735165B true CN108735165B (zh) 2020-09-15

Family

ID=63933267

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710262943.5A Active CN108735165B (zh) 2017-04-20 2017-04-20 一种水墨屏背光系统及其调节方法

Country Status (1)

Country Link
CN (1) CN108735165B (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109712594A (zh) * 2019-02-28 2019-05-03 广东小天才科技有限公司 一种全反射屏护眼前光补偿方法及系统
CN111883069B (zh) * 2020-07-29 2021-05-18 深圳市泰霖科技有限公司 一种基于环境光传感器实现数字相框背光调节的方法及系统
CN113763893A (zh) * 2021-09-17 2021-12-07 咪咕数字传媒有限公司 背光调节方法、设备、系统及计算机程序产品

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7746317B2 (en) * 2005-12-23 2010-06-29 Innocom Technology (Shenzhen) Co., Ltd. Liquid crystal display having a light sensor and driving method thereof for adjusting luminance according to that of ambient light
CN101794554A (zh) * 2010-03-31 2010-08-04 华为终端有限公司 类纸显示装置中亮度调节方法及装置、类纸显示系统
CN102110421A (zh) * 2009-12-28 2011-06-29 京东方科技集团股份有限公司 灰阶调节方法及装置
CN102621738A (zh) * 2011-01-26 2012-08-01 索尼公司 显示系统和背光系统
EP2492904A1 (en) * 2011-02-24 2012-08-29 Research In Motion Limited System and method for adjusting display regions for a display on an electronic device
CN105304061A (zh) * 2015-02-10 2016-02-03 维沃移动通信有限公司 终端的显示画面的调节方法及终端

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI308315B (en) * 2005-12-23 2009-04-01 Innolux Display Corp Liquid crystal display and method for adjusting it
CN102142232A (zh) * 2010-02-02 2011-08-03 元太科技工业股份有限公司 电子纸与其亮度调整方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7746317B2 (en) * 2005-12-23 2010-06-29 Innocom Technology (Shenzhen) Co., Ltd. Liquid crystal display having a light sensor and driving method thereof for adjusting luminance according to that of ambient light
CN102110421A (zh) * 2009-12-28 2011-06-29 京东方科技集团股份有限公司 灰阶调节方法及装置
CN101794554A (zh) * 2010-03-31 2010-08-04 华为终端有限公司 类纸显示装置中亮度调节方法及装置、类纸显示系统
CN102621738A (zh) * 2011-01-26 2012-08-01 索尼公司 显示系统和背光系统
EP2492904A1 (en) * 2011-02-24 2012-08-29 Research In Motion Limited System and method for adjusting display regions for a display on an electronic device
CN105304061A (zh) * 2015-02-10 2016-02-03 维沃移动通信有限公司 终端的显示画面的调节方法及终端

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
《一种快速实用的灰度校正算法》;高建贞 等;《中国图象图形学报》;20020630;第7卷(第6期);全文 *
《液晶显示器全局动态背光调整的改进CDF方法》;章小兵 等;《光电工程》;20121231;第39卷(第12期);全文 *

Also Published As

Publication number Publication date
CN108735165A (zh) 2018-11-02

Similar Documents

Publication Publication Date Title
CN112289280B (zh) 屏幕亮度调整方法及装置、计算机可读介质和电子设备
CN103871377B (zh) 具强光可视性的显示方法与使用此方法的电子装置
CN108538265B (zh) 一种液晶显示屏的显示亮度调整方法及装置
CN106462339B (zh) 终端及检测环境光亮度的方法
CN102750927B (zh) 依据环境光的亮度调整画面灰阶度的显示装置及方法
CN108735165B (zh) 一种水墨屏背光系统及其调节方法
CN104916271A (zh) 一种自动调整主题模式的显示装置、电视机及其控制方法
US9824650B2 (en) Method of adjusting display unit and electronic device
JP2018531419A6 (ja) 端末および周囲光の輝度を検出するための方法
CN105374340B (zh) 一种亮度校正方法、装置和显示设备
CN108401078B (zh) 一种背光亮度调节方法、装置、移动终端及可读存储介质
CN107346653B (zh) 一种基于深度学习的gamma曲线调校方法及装置
EP3726520A1 (en) Displays with adjustable direct-lit backlight units
US10964275B2 (en) Displays with adjustable direct-lit backlight units and adaptive processing
CN104916259A (zh) 控制医疗显示器的显示屏亮度的方法、装置及医疗显示器
CN113053310A (zh) 显示面板的伽玛调节方法及调节装置、显示设备
CN104732943A (zh) 公共电压调节方法及调节装置、显示装置
CN105304066B (zh) 一种dicom特性曲线查找表生成的方法及装置
CN107731201B (zh) 屏幕亮度调节方法及调节装置
CN105632407B (zh) 一种amoled显示屏的显示调整方法及移动终端
CN105513019A (zh) 一种提升图像质量的方法和装置
CN105825819B (zh) 显示模组和显示模组的亮度调节方法
CN112233631B (zh) 一种全固平板电脑屏幕亮度自动调整装置及方法
CN109754761B (zh) 一种随环境光变化调整电润湿显示亮度的方法及装置
CN101964167A (zh) 消除液晶显示器画面闪烁现象的方法

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20190322

Address after: Room 2062, Building No. 588 Zixing Road, Minhang District, Shanghai, 200241

Applicant after: SHANGHAI ZHENGDA HIMALAYAN NETWORK TECHNOLOGY CO., LTD.

Address before: 518000 Nanhai Avenue, Nanshan District, Shenzhen City, Guangdong Province, No. 2239 New Energy Building, Block A, 3rd Floor 301

Applicant before: Shenzhen Yi Xinlei Technology Co., Ltd.

SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information
CB02 Change of applicant information

Address after: 200241 Shanghai city Minhang District Zixing Road No. 588 Building 2 room 2062

Applicant after: Shanghai Himalaya Technology Co., Ltd

Address before: 200241 Shanghai city Minhang District Zixing Road No. 588 Building 2 room 2062

Applicant before: SHANGHAI ZHENGDA HIMALAYAN NETWORK TECHNOLOGY CO., LTD.

GR01 Patent grant
GR01 Patent grant