CN101004900A - Device and method for automatic adjusting parameters of display based on visual performance - Google Patents
Device and method for automatic adjusting parameters of display based on visual performance Download PDFInfo
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- 210000001508 eye Anatomy 0.000 claims description 17
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Abstract
A device used for automatically regulating parameters of display according to visual effect consists of a display, a detection unit and a control unit. It is featured as setting detection unit at a preset position to detect visual effect variation of display user and regulating parameters of said display accordingly by control unit based on detected variation of visual effect to make user be able to operate said display comfortably at long time.
Description
Technical field
The present invention relates to a kind of devices and methods therefor of automatic adjustment parameters of display, particularly relevant for a kind of devices and methods therefor of adjusting parameters of display with the vision performance automatically.
Background technology
Vision is the main navigational system of human body, and it is in the mankind's the information that 80% to 90% human reception is provided in life.The performance of movable and each aspect of the influence individual that progresses greatly of vision technique.Yet along with today social education and work requirements be index and grow up, human visual system's running has been in a more and more environment of difficulty.Computing machine has become the main pipeline that service and information are provided.The rapid growth of computed population aspect work, family, shopping, reading news or the like, and use a computer and provide the service and the amount of information also to increase gradually.Along with computing machine utilization rate and other and vision for information about the explosivity of collection activity grow up, make that the demand to vision system also greatly increases.Video signal display terminal (Visual Display Terminal) is human main media of linking up with computing machine (VDT).Cathode-ray tube (CRT) (Cathode Ray Tube) is main welcome video signal display terminal (CRT), but because cathode-ray tube (CRT) is bulky and other drawbacks limit cathode-ray tube (CRT) is applied on the portable product.Because flat-panel screens (Flat Panel Display) (FPD) has overcome many shortcomings of cathode-ray tube (CRT), so flat-panel screens has been combined in mobile computer and word processor (word processor) is gone up and used in many workplaces.Display has become the electronic installation that the modern must use every day in fact.Yet the parameter of display is the setting of brightness and contrast and the demand can't satisfy the actual use of every user the time for example, and causes user's vision performance to reduce in time, even produces serious visual fatigue.
Whether the parameter adjustment of display generally focuses on under the power saving prerequisite, using display to come Switching Power Supply or backlight according to the user, or adjusts the intensity of backlight according to the ambient lighting degree, to reach the effect of power saving.The parameters of display adjustment of another form, be by the user when bringing into use display, go manual adjustment according to own subjective preferences, yet this kind setting is not best setting for eyes.
In view of the above, demanding a kind of display that can comply with individual visual demand adjustment parameters of display at any time urgently is developed.
Summary of the invention
The object of the present invention is to provide a kind of devices and methods therefor of adjusting parameters of display with the vision performance automatically.
For achieving the above object, provided by the inventionly adjust the device of parameters of display automatically with the vision performance, it comprises:
One display is read for a user in order to display message;
One detecting system is located at a precalculated position and is changed with the vision performance of detecting this user; And
One control system has the relative parameters of display mapping of vision performance variable quantity table, and this control system changes and this mapping table according to this vision performance, to adjust this parameters of display.
Describedly adjust the device of parameters of display automatically with the vision performance, wherein this detecting system is a sighting distance detecting system, a frequency surveillance system or an eyes tracing system at a wink.
Describedly adjust the device of parameters of display automatically with the vision performance, wherein this sighting distance detecting system is light transmitting-receiving detecting system, an image sensing system or an acoustic ranging system.
Describedly adjust the device of parameters of display automatically with the vision performance, wherein this frequency of wink detecting system is an image sensing system.
Describedly adjust the device of parameters of display automatically with the vision performance, wherein this eyes tracing system is an image sensing system.
Describedly adjust the device of parameters of display automatically with the vision performance, wherein this parameters of display comprise brightness, to font size etc. when.
The described device of adjusting parameters of display with the vision performance automatically, wherein this control system comprises an analog/digital converter, a reservoir and a processor, this analog/digital converter conversion changes signal and is sent to this processor from a vision performance of this detecting system, this reservoir stores this vision performance and parameters of display mapping table, and this processor is according to this vision performance variation signal and this vision performance and parameters of display mapping table, to adjust this parameters of display.
Describedly adjust the device of parameters of display automatically with the vision performance, wherein this detecting system is a sighting distance detecting system, a frequency surveillance system or an eyes tracing system at a wink.
Describedly adjust the device of parameters of display automatically with the vision performance, wherein this sighting distance detecting system is light transmitting-receiving detecting system, an image sensing system or an acoustic ranging system.
Describedly adjust the device of parameters of display automatically with the vision performance, wherein this frequency of wink detecting system is an image sensing system.
Describedly adjust the device of parameters of display automatically with the vision performance, wherein this eyes tracing system is an image sensing system.
Describedly adjust the device of parameters of display automatically with the vision performance, wherein this parameters of display comprise brightness, to font size etc. when.
Describedly adjust the device of parameters of display automatically with the vision performance, wherein this detecting system is located at a non-display area of this display.
Describedly adjust the device of parameters of display automatically with the vision performance, wherein this detecting system is located at a non-display area of this display.
Provided by the inventionly adjust the method for parameters of display automatically with the vision performance, it comprises:
Detect an initial visual performance of a display user;
Detect this vision performance of this user continuously;
Whether this vision performance of judging this user changes, and when this vision performance does not change, repeats abovementioned steps, when this vision performance changes, determines this vision performance variable quantity; And
According to the relative parameters of display mapping of vision performance variable quantity table, adjust this parameters of display.
Describedly adjust the method for parameters of display automatically with the vision performance, wherein also be included in this display of aforementioned detecting user this initial visual performance step before preestablish this parameters of display.
Describedly adjust the method for display automatically, wherein also be included in this vision performance that redeterminates this user after this parameters of display step of aforementioned adjustment with the vision performance.
Describedly adjust the method for display automatically, wherein also be included in when this vision of aforementioned decision is continuous imitates the variable quantity step to judge whether this vision performance variable quantity crosses a ultimate value,, then send a caution signal if cross this ultimate value with the vision performance.
Describedly adjust the method for display automatically with the vision performance, wherein this vision performance is a sighting distance, frequency or an eye movement speed at a wink.
Describedly adjust the method for display automatically with the vision performance, wherein this parameters of display comprise brightness, to font size etc. when.
Describedly adjust the method for display automatically with the vision performance, wherein this parameters of display comprise brightness, to font size etc. when.
By enforcement of the present invention; the vision performance that detecting system is detected this display user changes; and according to this user's vision performance the parameter of this display is adjusted in performance automatically; so that this user can cosily use this display for a long time; can protect simultaneously this user's eyes; and can adjust this parameters of display at any time according to this display user's vision performance performance and set in the best, to avoid unnecessary power consumption.
Description of drawings
Fig. 1 adjusts the functional block diagram of a specific embodiment of the device of parameters of display automatically with the vision performance for the present invention;
Fig. 2 A is the display appearance synoptic diagram of the present invention in conjunction with a sighting distance detector;
Fig. 2 B is that a user uses the synoptic diagram of the present invention in conjunction with the display of a sighting distance detector;
Fig. 3 adjusts the flow chart of steps of the method for parameters of display automatically with the vision performance for the present invention;
Fig. 4 A shows the relative parameters of display mapping of the present invention's one sighting distance variable quantity table;
Fig. 4 B shows the present invention's relative parameters of display mapping of frequency variation at a wink table; And
Fig. 4 C shows the relative parameters of display mapping of the present invention's one eye movement velocity variable table.
Embodiment
The people of display discovers because of the vision performance, the vision performance (visualperformance) of display or visual fatigue (visual fatigue) can present with user's multiple sign, for example, the change of sighting distance (viewing distance), frequency of wink (blinking rate) and eye movement speed (eyemovement velocity) etc.Therefore, can detect the variation of these messages with detector, and further feed back to the parameter that display system changes display, and reach the optimal comfortization of human eye vision.Moreover, the parameter of display, for example brightness, contrast, font size all have international standard, recommended value or people because of vision performance result of study recommended value to subtended angle, font and color combination of sighting distance or the like.For example; ISO 13406-2 has its recommended value such as following table 1 to font size; when display system detects vision performance variation; for example sighting distance diminishes or frequency of wink uprises; promptly can change font size; predicted value by original user changes toward preferable standard recommendation value, to reach the purpose of protection eyes.Other parameters of display also can be adjusted according to identical mode.The present invention promptly is to detect continuously with detector display user's vision performance, and in time adjusts parameters of display automatically according to user's vision performance performance, is in the state that the most suitable human eye is read at any time to make display, to guarantee the health of human eye.
Table 1
| Font | Minimum discernable read font size | The preferable read font size of distinguishing |
| Latin | 16’ | 20 ' to 22 ' |
| The Asia | 25’ | 30 ' to 35 ' |
A kind of device of adjusting parameters of display automatically with the vision performance provided by the invention mainly comprises a display, a detecting system and a control system.This display is read for a user in order to display message, this detecting system is located at a non-display area of this display, change in order to the vision performance of detecting this user, perhaps this detecting system is located at a precalculated position, be beneficial to detect this user's vision performance variation, reach this control system and have the relative parameters of display mapping of vision performance table, this control system changes and this mapping table according to this vision performance, to adjust this parameters of display.The device that the present invention adjusts parameters of display automatically with the performance of vision performance will be described in detail as follows by following specific embodiment conjunction with figs.:
Fig. 1 adjusts the functional block diagram of the device of parameters of display for the present invention automatically with the vision performance, and it comprises a display 10, a vision performance detecting system 12 and a control system 16.This control system 16 also comprise an internal memory 161, a processor 162 and a simulation digital quantizer 163.This control system 16 is connected to the central processing unit 18 of a computing machine, sets the setting of for example brightness, contrast, font and font size etc. to change parameters of display.In the present invention, this vision performance detecting system 12 can be for a sighting distance detecting system, frequency surveillance system or an eyes tracing system (eyetracking system) be as this user's vision performance detecting system at a wink.This sighting distance detecting system is in order to detecting the variation that this user uses sighting distance in these display 10 processes, and with the variation of the sighting distance performance as this user's vision performance.Shown in figure 2A, this sighting distance detecting system 12 can be light transmitting-receiving detecting system, an acoustic ranging system or an image sensing system, and is located at a non-display area of this display 10.This light transmitting-receiving detecting system comprises an optical transmitting set and an optical receiver, be projeced on one's body this user by the emission light of this optical transmitting set, and this optical receiver receives the reflected light from this user, according to this catoptrical intensity size and this sighting distance relation of being inversely proportional to, can detect the variation of this user's sighting distance, shown in Fig. 2 B.Moreover the present invention also can use an acoustic ranging system as this sighting distance detector, by being directly proportional reflective sound wave time of arrival with distance, and by detecting reflective sound wave time of arrival, with sighting distance or its variation of measuring this user.
On the other hand, the present invention also can use an image sensor to imitate detecting system 12 as this vision, via the acquisition and the processing of image, can analyze this user's sighting distance variation or frequency of wink and variation thereof.
Read Fig. 1 again, this vision performance detecting system 12 can be a glance eyeball tracing system.Via the acquisition and the processing of image, can draw the eye movement speed of eyeball.
Fig. 3 is the aforementioned method step process flow diagram of adjusting the device of parameters of display with the vision performance automatically of the present invention.Below cooperate Fig. 1 and Fig. 3, the method that the present invention is adjusted parameters of display automatically with the vision performance is described in detail as follows.At first, in step 31, after 10 starts of this display,, preestablish the various parameters (or display be not adjusted and be located at default value) of this display 10, for example brightness, contrast, font and font size or the like by this user in step 32.Then, in step 33, detect this display 10 users' an initial visual performance, and be sent to this analog/digital converter 163, converting the set of number signal to and to be stored in this internal memory 161, with as a vision performance setting value.Sighting distance that in the present invention can this user is as this user's vision performance, and detect this user's an initial sighting distance with this sighting distance detecting system, and will this initial sighting distance deliver to this analog/digital converter 163 of this control system 16, to convert the set of number signal to and to be stored in this internal memory 161.In addition, the present invention can use the vision performance of this user's frequency of wink as this user, and detect this user's initial frequency of wink with this frequency of wink detector, and be sent to this analog/digital converter 163, converting the set of number signal to and to be stored in this internal memory 161, with as frequency initial value at a wink.Perhaps, the present invention also can use the vision performance of this user's eye movement speed as this user, and detect this user's initial eye movement speed with this eyes tracing system, and be sent to this analog/digital converter 163, converting the set of number signal to and to be stored in this internal memory 161, with as an eye movement speed initial value.Then, in step 34, detect this vision performance of this user, for example detect this user's sighting distance, frequency of wink or eye movement speed etc., and deliver to this analog/digital converter 163, to convert the set of number signal to, deliver to this processor 162 again, be stored in this internal memory 161 simultaneously.
In step 35, be stored in the initial visual performance of this internal memory 161 by these processor 162 bases, whether this vision performance of judging this user changes, and for example judges whether this user's sighting distance shortens, whether its frequency of wink increases or whether its eye movement speed increases.If this vision performance of this user does not produce change, then get back to step 34, continue this vision performance of this user of detecting.If this vision performance of this user produces change, then then judge by this processor 162 whether this vision performance crosses a vision performance ultimate value (threshold value), and this vision performance ultimate value is stored in this internal memory 161 in step 36.If this vision performance has been crossed this ultimate value, for example this user's sighting distance has been higher than a maximum safe limit value less than a sighting distance limit value or its frequency of wink or eye movement speed, then send a caution signal by this processor 162 controls one warning horn (not shown), have a rest to remind this user whether to do a moment slightly, as step 37.If this vision performance is not crossed this vision performance ultimate value, then enter step 38, this processor 162 is according to the mapping table and the vision performance formula P=Σ a that are stored in the relative parameters of display of a vision performance variable quantity of this internal memory 161
iX
i(X
iCan be parameters such as brightness, contrast, font size, font; a
iBe X
iWeighted value), to obtain one group of (a
i), and adjust the brightness of this display 10 according to this, to parameter such as font size when.When with sighting distance during as this vision performance of this user, the relative parameters of display mapping of this vision performance variable quantity table is the relative parameters of display mapping of sighting distance variable quantity table, shown in Fig. 4 A, in step 38, can be according to a sighting distance that detects and a sighting distance setting value that is stored in this internal memory 161, obtain a sighting distance variable quantity, again according to the relative parameters of display mapping of this vision performance variable quantity table, to obtain corresponding luminance weighted value a
1, contrast weighted value a
2And font size weighted value a
3And other parameters of display weighted value a
iThis processor 162 promptly according to aforementioned every weighted value adjust the brightness of this display 10, to parameter such as font size when, thus, the inventive method can be adjusted these display 10 parameters in optimal setting according to this user's sighting distance at that time.When with frequency of wink during as this vision performance of this user, the relative parameters of display mapping of this vision performance variable quantity table is the table of the relative parameters of display mapping of frequency variation at a wink, shown in Fig. 4 B, in step 38, can be according to frequency at a wink that detects and the frequency setting value at a wink that is stored in this internal memory 161, obtain frequency variation at a wink, again according to the mapping table of the relative parameters of display of this frequency of wink variable quantity, to obtain corresponding luminance weighted value a
1, contrast weighted value a
2And font size weighted value a
3And other parameters of display weighted value a
i。This processor 162 promptly according to aforementioned every weighted value adjust the brightness of this display 10, to parameter such as font size when, thus, the inventive method can be adjusted these display 10 parameters in optimal setting according to this user's frequency of wink at that time.When with eye movement speed during as this vision performance of this user, the relative parameters of display mapping of this vision performance variable quantity table is the relative parameters of display mapping of eye movement velocity variable table, shown in Fig. 4 C, in step 38, can be according to an eye movement speed that detects and an eye movement speed setting value that is stored in this internal memory 161, obtain an eye movement velocity variable, again according to the mapping table of the relative parameters of display of this eye movement velocity variable, to obtain corresponding luminance weighted value a
1, contrast weighted value a
2And font size weighted value a
3And other parameters of display weighted value a
iThis processor 162 promptly according to aforementioned every weighted value adjust the brightness of this display 10, to parameter such as font size when, thus, the inventive method can be adjusted these display 10 parameters in optimal setting according to this user's eye movement speed at that time.Next, in step 39, processor 162 detects step 34 and be stored in this vision performance of this internal memory 161, and for example sighting distance or frequency of wink are reset to this user's vision performance setting value.Then, get back to step 34, continue this user's of detecting vision performance.
Can detect this display user's vision performance performance at any time by the invention described above device and method, and in time adjust this display parameters automatically, to reach the optimization of human eye vision according to this user's vision performance performance.
The above is specific embodiments of the invention only, is not in order to limit claim of the present invention; All other do not break away from the equivalence of being finished under the disclosed spirit and changes or modification, all should be included in the claim.
Claims (21)
1. adjust the device of parameters of display automatically with the vision performance for one kind, it comprises:
One display is read for a user in order to display message;
One detecting system is located at a precalculated position and is changed with the vision performance of detecting this user; And
One control system has the relative parameters of display mapping of vision performance variable quantity table, and this control system changes and this mapping table according to this vision performance, to adjust this parameters of display.
2. as claimed in claim 1ly adjust the device of parameters of display automatically with the vision performance, it is characterized in that, wherein this detecting system is a sighting distance detecting system, a frequency surveillance system or an eyes tracing system at a wink.
3. as claimed in claim 2ly adjust the device of parameters of display automatically, it is characterized in that wherein this sighting distance detecting system is light transmitting-receiving detecting system, an image sensing system or an acoustic ranging system with the vision performance.
4. as claimed in claim 2ly adjust the device of parameters of display automatically, it is characterized in that wherein this frequency of wink detecting system is an image sensing system with the vision performance.
5. as claimed in claim 2ly adjust the device of parameters of display automatically, it is characterized in that wherein this eyes tracing system is an image sensing system with the vision performance.
6. as claimed in claim 1ly adjust the device of parameters of display automatically, it is characterized in that with the vision performance, wherein this parameters of display comprise brightness, to font size etc. when.
7. the device of adjusting parameters of display with the vision performance automatically as claimed in claim 1, it is characterized in that, wherein this control system comprises an analog/digital converter, a reservoir and a processor, this analog/digital converter conversion changes signal and is sent to this processor from a vision performance of this detecting system, this reservoir stores this vision performance and parameters of display mapping table, and this processor is according to this vision performance variation signal and this vision performance and parameters of display mapping table, to adjust this parameters of display.
8. as claimed in claim 7ly adjust the device of parameters of display automatically with the vision performance, it is characterized in that, wherein this detecting system is a sighting distance detecting system, a frequency surveillance system or an eyes tracing system at a wink.
9. as claimed in claim 8ly adjust the device of parameters of display automatically, it is characterized in that wherein this sighting distance detecting system is light transmitting-receiving detecting system, an image sensing system or an acoustic ranging system with the vision performance.
10. as claimed in claim 8ly adjust the device of parameters of display automatically, it is characterized in that wherein this frequency of wink detecting system is an image sensing system with the vision performance.
11. as claimed in claim 8ly adjust the device of parameters of display automatically, it is characterized in that wherein this eyes tracing system is an image sensing system with the vision performance.
12. as claimed in claim 7ly adjust the device of parameters of display automatically with the vision performance, it is characterized in that, wherein this parameters of display comprise brightness, to font size etc. when.
13. as claimed in claim 1ly adjust the device of parameters of display automatically, it is characterized in that wherein this detecting system is located at a non-display area of this display with the vision performance.
14. as claimed in claim 7ly adjust the device of parameters of display automatically, it is characterized in that wherein this detecting system is located at a non-display area of this display with the vision performance.
15. adjust the method for parameters of display automatically with the vision performance for one kind, it comprises:
Detect an initial visual performance of a display user;
Detect this vision performance of this user continuously;
Whether this vision performance of judging this user changes, and when this vision performance does not change, repeats abovementioned steps, when this vision performance changes, determines this vision performance variable quantity; And
According to the relative parameters of display mapping of vision performance variable quantity table, adjust this parameters of display.
16. as claimed in claim 15ly adjust the method for parameters of display automatically with the vision performance, it is characterized in that, wherein also be included in this display of aforementioned detecting user this initial visual performance step before preestablish this parameters of display.
17. as claimed in claim 15ly adjust the method for display automatically with the vision performance, it is characterized in that, wherein also be included in this vision performance that redeterminates this user after this parameters of display step of aforementioned adjustment.
18. the method for adjusting display with the vision performance automatically as claimed in claim 15, it is characterized in that, wherein also be included in when this vision of aforementioned decision is continuous imitates the variable quantity step to judge whether this vision performance variable quantity crosses a ultimate value,, then send a caution signal if cross this ultimate value.
19. as claimed in claim 15ly adjust the method for display automatically, it is characterized in that wherein this vision performance is a sighting distance, frequency or an eye movement speed at a wink with the vision performance.
20. adjust the method for display automatically with the vision performance as claim 15 is described, it is characterized in that, wherein this parameters of display comprise brightness, to font size etc. when.
21. as claimed in claim 16ly adjust the method for display automatically with the vision performance, it is characterized in that, wherein this parameters of display comprise brightness, to font size etc. when.
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