CN101887700A - Computer system, display device and backlight control method - Google Patents
Computer system, display device and backlight control method Download PDFInfo
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- CN101887700A CN101887700A CN2009102038252A CN200910203825A CN101887700A CN 101887700 A CN101887700 A CN 101887700A CN 2009102038252 A CN2009102038252 A CN 2009102038252A CN 200910203825 A CN200910203825 A CN 200910203825A CN 101887700 A CN101887700 A CN 101887700A
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Abstract
The invention discloses a computer system, a display device and a backlight control method. The use behavior (such as the position of the user) of a user and the environment variables (such as the position of an environment light source) are detected through the display device provided with an image acquisition system by using the judgment technique of computer vision so as to manage the power source of the display, and thus, the purpose of energy saving is achieved.
Description
Technical field
The present invention relates to a kind of display device, computer system and method for controlling backlight thereof.Be particularly related to the method for controlling backlight thereof of doing computer system, display device and this display device that different backlights adjust inside and outside a kind of particular block of the whole picture to display device.
Background technology
At present make display device operate in one of way of battery saving mode on the market, for utilizing manual mode that the whole backlight of the LCD of personal computer (as notebook computer) is adjusted, wherein notebook computer is when powered battery, automatically downgrade whole backlight and according to the analysis of image content thing (such as, bright dark degree, contrast degree, histogram (Histogram) distribute etc.) adjust whole backlight, to reach the power saving effect.Yet, when changing by pure powered battery, can make the decline backlight of whole picture usually and whole sharpness is reduced with existing adjustment mode, and then influence use experience when the power lead of pulling out notebook computer.
In addition, the backlight intensity that the brilliance control of commercially available display is revised display according to the content of image mostly (for example, if dark picture, then reduce backlight illumination), or utilize the environment light source sensor, revise the brightness (for example, if bright light environments then improves display brightness) of display by the acquisition environment light source.Yet, the technology of the picture of above-mentioned adjustment display device is the whole picture of adjusting display device, that is, other viewing area is not adjusted in case of necessity backlightly if only there is in the display frame certain a part of viewing area (for example zone that the user was absorbed in) must adjust backlight, then can't realize above-mentioned user demand according to tradition adjustment technology backlight.
Summary of the invention
For improving the defective of above-mentioned prior art, the present invention proposes a kind of method for controlling backlight thereof of computer system backlight, display device and display device of subregion of may command display screen, utilize image collecting module to obtain environmental images, obtain positional information such as user and environment light source etc. by image processing technique, to the zonal power management of make displays, thereby reach effect of saving energy.
The object of the present invention is to provide a kind of display device.This display device comprises display screen, image collection unit, analytic unit and control module.Wherein, the image collection unit is used to gather environmental images.Analytic unit analysis environments image, and produce environmental information.Control module is according to environmental information, the subregion of control display screen curtain backlight.
Another object of the present invention is to provide a kind of computer system.This computer system comprises display screen, image collection unit, processing unit and control module.Wherein, the image collection unit is used to gather environmental images.Control module is used for subregion backlight of control display screen curtain.Processing unit analysis environments image produces environmental information.Wherein, control module is according to environmental information, the subregion of control display screen curtain backlight.
Another purpose again of the present invention is to provide a kind of method for controlling backlight thereof, is used in display screen.This method for controlling backlight thereof comprises the following step: use the image collection unit to gather environmental images.By analytic unit analysis environments image, produce environmental information.And, by control module according to environmental information, the subregion of control display screen curtain backlight.
In sum, the method for controlling backlight thereof of computer system of the present invention, display device and display device has one or more following advantages:
(1) by having on the display of image acquisition system, utilize the judgment technology of computer vision, survey user's usage behavior (for example user's position) and acquisition environment variable (for example position of environment light source), come the power supply of administration display, thereby reach energy-conservation purpose.
(2) under specific circumstances, do the adjustment of different backlights inside and outside the particular block to the whole picture of display device, reach power saving thus simultaneously and keep the sharpness that the user is absorbed in block.
(3) by the judgment technology of method for controlling backlight thereof and computer vision, can improve viewing area brightness automatically, and balance adjustment display device reduces the glare effect of viewing area to human eye thus from light source viewing area far away near light source.
Description of drawings
By the description of carrying out below in conjunction with accompanying drawing, above-mentioned and other purposes of the present invention and characteristics will become apparent, wherein:
Fig. 1 is the synoptic diagram of first embodiment of the invention;
Fig. 2 is the synoptic diagram of second embodiment of the invention;
Fig. 3 is used in the process flow diagram of the method for controlling backlight thereof of display screen for the present invention.
Main symbol description: 1 is environmental images; 2 is display device; 21,311 is the image collection unit; 22 is analytic unit; 23,33 is environmental information; 24,312 is control module; 25,313 is display screen; 26,314 is the backlight of subregion; 3 is computer system; 31 is display module; 32 is processing unit; S1-S3 is a step.
Embodiment
Fig. 1 is the synoptic diagram of the first embodiment of the present invention.In this embodiment, display device 2 of the present invention comprises display screen 25, image collection unit 21, analytic unit 22 and control module 24.Wherein, display screen 25 can be LCD.Image collection unit 21 (such as network camera (Webcam) or other camera head) is used to gather environmental images 1.Analytic unit 22 is used for analysis environments image 1, thereby produces environmental information 23, and wherein, preferably, environmental information 23 comprises the relative position of user and display screen 25, perhaps the relative position of environment light source and display screen 25.Control module 24 is used for according to environmental information 23, the subregion of control display screen curtain 25 backlight.
In this embodiment, if tangible light source (for example desk lamp) reflection is arranged in user's environment of living on display screen 25, then the reflective of this light source can occur on the display screen 25 and influence user's the impression of watching, then control module 24 can be according to the environmental information 23 of analytic unit 22 outputs, the backlight of zone of corresponding this light source position lightened, improve the reflective phenomenon of light source on display screen 25 thus.
In addition, control module 24 can be according to environmental information 23, judge the relative position of user and display screen 25, and then judge the viewing area that the user is being absorbed at present, and keep or heighten the backlight of this viewing area, simultaneously with the reduction backlight outside this viewing area, reaching power saving effect, and do not influence the image sharpness of the block that the user is being absorbed in.
In addition, image collection unit 21 optionally can have first operator scheme and second operator scheme.When first operator scheme is carried out in image collection unit 21 (for example normal manipulation mode), image collection unit 21 is also the environmental images 1 of being gathered to be sent to host side (be not shown in graphic in), and control module 24 is obtained environmental information 23 by host side.In addition, when under specific circumstances (for example, manually boot battery saving mode or pull out the situation that power supply enters pure battery power supply), second operator scheme (for example battery saving mode) can be carried out in image collection unit 21, the environmental images 1 of being gathered is sent to analytic unit 22, by analytic unit 22 analysis environments images 1 and produce environmental information 23, for example, produce the relative position of user and display screen 25, the perhaps relative position of environment light source and display screen 25, and control module 24 is after reception environment information 23, promptly the inside and outside scope of particular block is done the adjustment of different backlights, that is, with the extraneous reduction backlight of block, but keep or improve backlight in the block scope, reach not only power saving thus but also keep the sharpness of the block that the user is being absorbed in.In addition, when being judged to be park mode or not having the user in display device the place ahead, perhaps unmanned use (not carrying out any software or application program) is promptly closed the backlight of display device 2 during a period of time.
It is noted that at this, the visual user of above-mentioned block determine mechanism need and in be located in display device 2 or the signal output part.If be located in the display device 2 in the block determine mechanism, can utilize this block determine mechanism, can find out the block scope be absorbed at present or comparison regional extent by the image discriminant approach near light source.In addition, if be located at signal output part in the block determine mechanism, then can utilize operating system (OS) directly to obtain the block scope of application program this moment.
Fig. 2 is the synoptic diagram of the second embodiment of the present invention.In this embodiment, computer system 3 of the present invention comprises display module 31 and processing unit 32.Wherein, display module 31 comprises image collection unit 311, control module 312 and display screen 313.Image collection unit 311 is used to gather environmental images 1.Processing unit 32 is used for analysis environments image 1, to produce environmental information 33 (for example, the relative position of user and display screen 313, the perhaps relative position of environment light source and display screen 313).Control module 312 is then according to environmental information 33, with backlight 314 of the subregion of control display screen curtain 313.
In addition, computer system 3 can also comprise analytic unit 22, analytic unit 22 analysis environments images 1, and produce environmental information 33.When first operator scheme is carried out in image collection unit 311, normal manipulation mode for example, processing unit 32 analysis environments images 1 by host side then, thus produce environmental information 33, and provide control module 312 control display screen curtains 313 the subregion backlight 314.When under specific circumstances (for example, manually boot battery saving mode or pull out the situation that power supply enters pure battery power supply), second operator scheme can be carried out in image collection unit 311, and for example battery saving mode then can be sent to analytic unit 22 with the environmental images 1 that collecting unit 311 is gathered.Analytic unit 22 analysis environments images 1 back produces environmental information 33 (for example, the relative position of user and display screen 313, the perhaps relative position of environment light source and display screen 313).And control module 312 is promptly done the adjustment of different backlights to the inside and outside scope of particular block after reception environment information 33.That is, with the extraneous reduction backlight of block, but keep or improve backlight in the block scope, reach not only power saving thus but also keep the sharpness of the block that the user is being absorbed in.In addition, when being judged to be park mode or not having the user in display module 31 the place aheads, perhaps unmanned use (not carrying out any software or application program) is promptly closed the backlight of display module 31 during a period of time.
It is noted that at this, the visual user of above-mentioned block determine mechanism need and in be located in display module 31 or the signal output part.If be located in the display module 31 in the block determine mechanism, the mode that can utilize this block determine mechanism to differentiate by image this moment can be found out absorbed at present block scope or the comparison regional extent near light source.In addition, if be located at signal output part in the block determine mechanism, then can utilize operating system (OS) directly to obtain the block scope of application program this moment.
Then, Fig. 3 is used in the process flow diagram of the method for controlling backlight thereof of display screen for the present invention.Wherein, method for controlling backlight thereof comprises the following step: use the image collection unit to gather environmental images (step S1).By analytic unit analysis environments image, produce environmental information (step S2).And, by control module according to environmental information, (the step S3) backlight of the subregion of control display screen curtain.Wherein, the environmental information that analytic unit produced for example can comprise: the relative position of user and display screen, the perhaps relative position of environment light source and display screen.In addition, the image collection unit also is sent to host side with the environmental images of gathering, and control module is obtained environmental information by host side.
When first operator scheme was carried out in the image collection unit, for example normal manipulation mode was sent to host side with the environmental images of being gathered, and control module is then obtained environmental information by host side.When under specific circumstances (for example, manually boot battery saving mode or pull out the situation that power supply enters pure battery power supply) time, second operator scheme can be carried out in the image collection unit, battery saving mode for example, the environmental images of being gathered is sent to analytic unit, by analytic unit analysis environments image and (for example produce environmental information, the relative position of user and display screen, the perhaps relative position of environment light source and display screen), and control module is promptly done the adjustment of different backlights to the inside and outside scope of particular block after reception environment information.That is, with the extraneous reduction backlight of block, but keep or improve backlight in the block scope, reach not only power saving thus but also keep the sharpness of the block that the user is being absorbed in.In addition, when being judged to be park mode or not having the user in display device the place ahead, perhaps unmanned use (not carrying out any software or application program) is promptly closed the backlight of display device during a period of time.
It is noted that at this, the visual user of above-mentioned block determine mechanism need and in be located in display screen or the signal output part.If be located in the display screen in the block determine mechanism, the mode that can utilize this block determine mechanism to differentiate by image this moment can be found out absorbed at present block scope or the comparison regional extent near light source.In addition, if be located at signal output part in the block determine mechanism, then can utilize operating system (OS) directly to obtain the block scope of application program this moment.
What deserves to be mentioned is, because more and more manufacturers all will be assemblied on the display such as the image collecting module of network camera (Webcam), to increase the surcharge that display uses in network, so the present invention utilizes the mechanism of image processing to survey the relevant information of user's behavior and environmental images, and then reach the backlight of the part viewing area of adjusting display device, and to have less electricity consumption simultaneously be feasible.
The invention is not restricted to the foregoing description, without departing from the present invention, can carry out various changes and modifications.For example: the present invention causing picture contrast to descend because of reduction backlight or unsharp situation under, can be under the prerequisite that does not influence the power saving purpose, adjust other parameter (such as brightness, contrast, saturation degree, sharpness ... or the like) to improve image quality; In addition, block determine mechanism of the present invention also can be applicable on the network film, when when watching the network film, can only will be absorbed in extra-regional reduction backlight, and it is carried out image optimization (adjusting other image parameters to improve image quality), alleviate thus because of the picture that causes backlight unintelligible; In addition, processing unit can have the image process unit that image processing algorithm, object-detection, the judgement that comprises character contour and/or picture area brightness are surveyed; Moreover the image collection unit can be sent to the image data that is collected outer computer and handle, and transmits backlight control by outer computer again and instructs to display screen; In addition, can be information such as size such as particular block, reference position, level by the obtained block information of above-mentioned block determine mechanism.Therefore protection scope of the present invention should be as the criterion with claims.
Claims (10)
1. a display device is characterized in that, comprises:
Display screen;
The image collection unit is used to gather environmental images;
Analytic unit is analyzed described environmental images, produces environmental information; And
Control module according to described environmental information, is controlled subregion backlight of described display screen.
2. display device according to claim 1, it is characterized in that, described environmental information comprises the relative position of user and described display screen, and described control module is according to the relative position of described user and described display screen, judge the viewing area that described user is absorbed at present, and described absorbed viewing area backlight remained unchanged or lighten.
3. display device according to claim 1 is characterized in that described environmental information comprises the relative position of environment light source and described display screen, and described control module lightens the backlight of described subregion of the described environment light source of correspondence position.
4. display device according to claim 1, it is characterized in that, when first operator scheme is carried out in described image collection unit, the described environmental images of gathering is sent to the host side that is connected with described display device, described control module is then obtained described environmental information by described host side; And when second operator scheme is carried out in described image collection unit, described environmental images is sent to described analytic unit.
5. a computer system is characterized in that, comprises:
Display screen;
The image collection unit is used to gather environmental images;
Control module is used to control subregion backlight of described display screen; And
Processing unit is analyzed described environmental images, produces environmental information;
Wherein, described control module is according to described environmental information, controls subregion backlight of described display screen.
6. computer system according to claim 5, it is characterized in that, described environmental information comprises the relative position of user and described display screen, and described control module is according to the relative position of described user and described display screen, judge the viewing area that described user is absorbed at present, and described absorbed viewing area backlight remained unchanged or lighten.
7. computer system according to claim 5 is characterized in that described environmental information comprises the relative position of environment light source and described display screen, and described control module lightens the backlight of described subregion of the described environment light source of correspondence position.
8. a method for controlling backlight thereof is used in display screen, it is characterized in that, comprises the following step:
Use the image collection unit to gather environmental images;
Analyze described environmental images by analytic unit, produce environmental information; And
According to described environmental information, control subregion backlight of described display screen by control module.
9. method for controlling backlight thereof according to claim 8, it is characterized in that, described environmental information comprises the relative position of user and described display screen, and described control module is according to the relative position of described user and described display screen, judge the viewing area that described user is absorbed at present, and described absorbed viewing area backlight remained unchanged or lighten.
10. method for controlling backlight thereof according to claim 8, it is characterized in that, also comprise the model selection step, when first operator scheme is carried out in described image collection unit, the described environmental images of gathering is sent to the host side that is connected with described display device,, described control module is then obtained described environmental information by described host side; And when second pattern is carried out in described image collection unit, described environmental images is sent to described analytic unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009102038252A CN101887700A (en) | 2009-05-15 | 2009-05-15 | Computer system, display device and backlight control method |
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| CN2009102038252A CN101887700A (en) | 2009-05-15 | 2009-05-15 | Computer system, display device and backlight control method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842291A (en) * | 2012-09-04 | 2012-12-26 | 济南微晶电子技术有限公司 | Backlight adjusting system and method based on frontal-view face detection |
| CN103207665A (en) * | 2012-01-16 | 2013-07-17 | 联想(北京)有限公司 | Screen position adjustment method and device as well as electronic equipment |
| CN103400567A (en) * | 2013-08-02 | 2013-11-20 | 苏州鼎富软件科技有限公司 | Automatic screen brightness adjusting method |
| CN104461425A (en) * | 2014-11-28 | 2015-03-25 | 广东欧珀移动通信有限公司 | Screen content display adjusting method and device and terminal |
| CN104616626A (en) * | 2015-02-28 | 2015-05-13 | 京东方科技集团股份有限公司 | Brightness adjusting device and method of display device |
| CN105812678A (en) * | 2016-03-07 | 2016-07-27 | 合肥联宝信息技术有限公司 | Electronic equipmentcapable of improving light reflection phenomenon and method thereof |
| CN107146434A (en) * | 2017-06-30 | 2017-09-08 | 北京中交华安科技有限公司 | Show the method and system of speed-limiting messages |
| CN110037685A (en) * | 2019-04-01 | 2019-07-23 | 上海数创医疗科技有限公司 | With the portable electrocardiograph for improving convolutional neural networks recognizer |
| CN112259053A (en) * | 2020-11-05 | 2021-01-22 | 上海摩软通讯技术有限公司 | Display method and display device |
| CN112799433A (en) * | 2021-01-20 | 2021-05-14 | 深圳市达特文化科技股份有限公司 | Character display system based on point light source |
| CN116682383A (en) * | 2023-05-30 | 2023-09-01 | 惠科股份有限公司 | Display panel, backlight compensation method thereof and display device |
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2009
- 2009-05-15 CN CN2009102038252A patent/CN101887700A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103207665B (en) * | 2012-01-16 | 2017-04-19 | 联想(北京)有限公司 | Screen position adjustment method and device as well as electronic equipment |
| CN103207665A (en) * | 2012-01-16 | 2013-07-17 | 联想(北京)有限公司 | Screen position adjustment method and device as well as electronic equipment |
| CN102842291A (en) * | 2012-09-04 | 2012-12-26 | 济南微晶电子技术有限公司 | Backlight adjusting system and method based on frontal-view face detection |
| CN103400567A (en) * | 2013-08-02 | 2013-11-20 | 苏州鼎富软件科技有限公司 | Automatic screen brightness adjusting method |
| CN104461425A (en) * | 2014-11-28 | 2015-03-25 | 广东欧珀移动通信有限公司 | Screen content display adjusting method and device and terminal |
| CN104616626A (en) * | 2015-02-28 | 2015-05-13 | 京东方科技集团股份有限公司 | Brightness adjusting device and method of display device |
| CN105812678A (en) * | 2016-03-07 | 2016-07-27 | 合肥联宝信息技术有限公司 | Electronic equipmentcapable of improving light reflection phenomenon and method thereof |
| CN107146434A (en) * | 2017-06-30 | 2017-09-08 | 北京中交华安科技有限公司 | Show the method and system of speed-limiting messages |
| CN110037685A (en) * | 2019-04-01 | 2019-07-23 | 上海数创医疗科技有限公司 | With the portable electrocardiograph for improving convolutional neural networks recognizer |
| CN112259053A (en) * | 2020-11-05 | 2021-01-22 | 上海摩软通讯技术有限公司 | Display method and display device |
| CN112799433A (en) * | 2021-01-20 | 2021-05-14 | 深圳市达特文化科技股份有限公司 | Character display system based on point light source |
| CN112799433B (en) * | 2021-01-20 | 2022-08-12 | 深圳市达特文化科技股份有限公司 | Character display system based on point light source |
| CN116682383A (en) * | 2023-05-30 | 2023-09-01 | 惠科股份有限公司 | Display panel, backlight compensation method thereof and display device |
| CN116682383B (en) * | 2023-05-30 | 2024-05-03 | 惠科股份有限公司 | Display panel, backlight compensation method thereof and display device |
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Application publication date: 20101117 |