CN1753077A - Brightness control method of image display and its device - Google Patents
Brightness control method of image display and its device Download PDFInfo
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- CN1753077A CN1753077A CN 200410051642 CN200410051642A CN1753077A CN 1753077 A CN1753077 A CN 1753077A CN 200410051642 CN200410051642 CN 200410051642 CN 200410051642 A CN200410051642 A CN 200410051642A CN 1753077 A CN1753077 A CN 1753077A
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Abstract
The invention relates to a video display brightness control method and device, and the device comprises a display device and also comprises a storage device to store and record a brightness information table according to temperature and illumination, sensing devices for sensing peripheral illumination and temperature of display device of video display, and a control device for extracting the optimum brightness information from the storage device according to the temperature-brightness curve transmitted by the sensing devices, judging if the extracted brightness information is adapted to the previous brightness information, and regulating the brightness of the display device.
Description
(1) technical field
The invention relates to the brightness control method and the device of the video display that is equipped with LCD.
(2) background technology
In order to cater to the development of home theater,, also can watch the program of transmission in the general family by this projection display recently along with the projection TV of 40 inches higher levels using in company or the public building or the supply of projection machine change.
Identical therewith, projection machine and projection TV utilize the product of LCD just constantly to be widely used in general family for increasing brightness and vividness, and relevant exploitation also increases with production thereupon.
With last identical, when machine was equipped with the situation of LCD, most user kept and the once fixing identical level of brightness according to the horizontal adjustment brightness of selecting.In special product, utilize the illuminance transducer of the outside brightness of perception to regulate brightness.The device that utilizes illuminance transducer to carry out brightness regulation describes with reference to Fig. 1.
Fig. 1 is the simple piece figure of the brightness controlling device of existing image display.
As shown in Figure 1, the brightness controlling device of image display comprises illuminance transducer 100, control device 110 and display device 120.
Above said control device 110 judge the peripheral monochrome information of sending from illuminance transducer 100, and the brightness control signal that will regulate display device 120 brightness is sent to display device 120.
Above said display device 120 regulate and the corresponding brightness of brightness control signal.
Below the operation of the image display brightness controlling device of formation same as described above is described.
Above said control device 110 judge the illuminance information that transmits from illuminance transducer 100, and regulate the brightness of display device 120.
For example, if the illuminance information that transmits from illuminance transducer 100 compares fixed reference value height, control device 110 will make display device brighter.
In addition, if top illuminance information is lower than the reference value of having set, control device 110 will make the brightness deepening of display device 120.
But exist the illumination characteristic of not considering according to the LCD temperature in the identical therewith conventional device, and make the problem of LCD heating.
(3) summary of the invention
The brightness control method and the device that the purpose of this invention is to provide a kind of video display can be considered the illumination characteristic of LCD temperature and the brightness of scalable LCD.
Another object of the present invention is exactly even the user does not control picture brightness especially, also can provide optimal picture brightness.
For achieving the above object, the brightness controlling device of video display of the present invention comprises display device, also comprises: memory storage is used for the monochrome information table of stored record according to the monochrome information of temperature and illumination; Sensing device is used for perception video display periphery illumination and display device temperature; Control device is according to the brightness curve of the temperature that transmits from sensing device optimum monochrome information to be extracted out from memory storage, judges whether the monochrome information of extracting out adapted with former monochrome information, and the brightness of adjusting display device.
Above said sensing device comprise: illuminance transducer, it is an illumination of utilizing induction element to come perception image display periphery through certain time interval; Temperature sensor is through the temperature of certain time interval perception display device.
If above the monochrome information that extracts of said control device identical with former brightness, no longer regulate the brightness of display device; If incompatible, the brightness of display device is regulated.
According to a further aspect in the invention, brightness control method for the video display that is equipped with display device comprises: after certain time interval perception image display periphery illumination and display device temperature, from memory storage, extract the most suitable monochrome information according to the temperature of perception, judge that whether the monochrome information extract adapts with former brightness, judged result is if monochrome information that extracts and the incompatible words of monochrome information in the past, regulate the brightness of display device, itself and monochrome information are adapted.
Effect of the present invention:
Identical with the above, brightness control method and device according to video display of the present invention have appended temperature sensor and illuminance transducer, thus in the brilliance control of LCD picture, even the user does not control picture brightness especially, also can provide best picture brightness to it.
In addition, brightness control method and device according to video display of the present invention, on the bias light that uses in the brightness regulation of LCD (Back Light) characteristic, when the very low situation of temperature, can not control sufficient brightness, bigger influence is also arranged in certainty, also prolonged simultaneously to adjusting intrinsic brilliance and arrived time of necessary temp, at this moment, welcome raising brightness, and offer the needed brightness of user, and can promptly arrive the state of operation, make user's inconvenience drop to minimum.
In addition, brightness control method and device according to video display of the present invention, different with the LCD of existing single display device, when being provided with the situation of touch-screen, the user is because direct contact screen surface, so control can prevent that to the brightness that the LCD surface temperature directly exerts an influence the user from touching overheated LCD display automatically.
In addition, brightness controlling device according to video display of the present invention, temperature sensor is installed, when the temperature of display device low excessively, under the situation that the brightness that the user requires does not have to occur, automatically improve the brightness of display device and when making temperature too high, it is too high to prevent the display device temperature that brightness controlling device reduces brightness immediately.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
(4) description of drawings
Fig. 1 is the concise and to the point piece figure of the brightness controlling device of existing video display;
Fig. 2 is the concise and to the point piece figure according to the video display brightness controlling device formation of embodiments of the invention;
Fig. 3 is the brightness control method process flow diagram according to the video display of embodiments of the invention.
The symbol description of major part in the accompanying drawing:
100.200: illuminance transducer 110.210: control device
120.220: display device 205: temperature sensor
230: memory storage
(5) embodiment
Followingly the brightness control method of video display of the present invention and the embodiment of device are described in detail with reference to accompanying drawing.
Fig. 2 is the concise and to the point piece figure of formation according to the brightness controlling device of the image display of embodiments of the invention.
Referring to Fig. 2, the brightness controlling device of image display comprises: illuminance transducer 200, temperature sensor 205, control device 210, display device 220 and memory storage 230, wherein illuminance transducer 200, and temperature sensor 205 is referred to as sensing device, are perception video display periphery illumination and display device 220 temperature.
Above said temperature sensor 205 through certain time intervals, the temperature of perception LCD display devices, and the temperature information that perceives is sent to control device 210.
Above said control device 210 have from illuminance transducer 200 illuminance information that transmits and the temperature information that from temperature sensor 205, transmits, control display device 220 for reaching best picture brightness.That is, above said control device 210 judge from illuminance transducer 200 illuminance information that transmits and the temperature information that transmits from temperature sensor 205, and produce the brightness control signal of regulating display device 220 brightness.
Above said memory device stores comprise monochrome information table according to the monochrome information of temperature and illumination, in addition, the initial stage monochrome information that memory storage 230 storage users have been provided with.
Above said display device 220 carry out brightness regulation, brightness and the brightness control signal that transmits from control device 210 are adapted.
Below, to describing with the operation of the brightness controlling device of the image display of above identical formation.
Above said illuminance transducer 200 utilize the induction element of photoconduction electric unit (CDS) etc., after the brightness of perception image display periphery, the illuminance information of institute's perception is sent to control device 210, temperature sensor 205 passes through the temperature of certain time interval perception display device (LCD) 220, and the temperature information of perception is sent to control device 210.
Above said control device 210 after receiving the temperature information that illuminance information that illuminance transducer 200 transmits and temperature sensor 205 transmit, the family curve of the display device brightness that forms according to temperature information extracts in the monochrome information table of monochrome information from be stored in memory storage 230 that will be fit to the most the user.
After this, control device 210 judges whether the information that extracts and former brightness adapt, and adapts 210 brightness of no longer regulating display device 220 of control device if judged result is the monochrome information that extracts and former monochrome information.
If top judged result is that the monochrome information that extracts and former monochrome information are incompatible, top control device 210 sends to regulating the brightness control signal of display device 220 brightness, and is sent to display device 220.
In that event, display device 220 adjusting brightness make with brightness control signal and adapt.
That is, if user's operation video display, by illuminance transducer 200 and temperature sensor 205, control device 210 polymerization illuminance information and temperature informations, afterwards, control device 210 has illuminance information and temperature information, controls display device 220 for adjusting best picture brightness.
When the lower situation of temperature, because the characteristic of display device 220 is to guarantee that sufficient brightness needs long time, so improve picture brightness arbitrarily, improve the temperature of display device 220 rapidly, identical with the illumination of reality, and, receive the illuminance information and the temperature information that send from illuminance transducer 200 and temperature sensor 205 every the regular hour, adjust best brightness according to the family curve of display device brightness gradually to the user.
Identical therewith method when the excessive situation of the thermal value of display device 220, is regulated the heating that brightness reduces display device 220.
Fig. 3 is the process flow diagram according to the brightness control method of the video display of embodiments of the invention.
As reference Fig. 3:
S300, brightness controlling device utilize timer through certain time interval, perception periphery brightness (illumination) and LCD temperature.
S302 according to the family curve of the display device of the temperature of perception, extracts the monochrome information of user's the best from the monochrome information table.
In the monochrome information table, stored monochrome information according to illumination and temperature.Brightness controlling device utilizes timer to confirm sensor every the regular hour, if LCD temperature and brightness stability just prolong the interval of timer.
S304, brightness controlling device judge the monochrome information in step S302, extract whether with before monochrome information adapt.
The judged result of step 304, if monochrome information that extracts and former monochrome information adapt, brightness controlling device is got back to step S300 and is operated.
S306, just in case the judged result of step 304 is that the monochrome information that extracts and former monochrome information are incompatible, top control device is that the monochrome information that makes and extract adapts, and regulates the brightness of video display.
Identical with the above, the temperature that the brightness controlling device of image display is worked as display device is low excessively, the brightness that the user requires not have under the situation of appearance, improves the brightness of display device automatically and when making temperature too high, it is too high to prevent the display device temperature that brightness controlling device reduces brightness immediately.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.
Claims (4)
1, a kind of brightness controlling device of video display includes display device, it is characterized in that also comprising:
Memory storage is to be used for stored record according to the monochrome information table of the monochrome information of temperature and illumination;
Sensing device is used for the described video display of perception periphery illumination and described display device temperature;
Control device, be optimum monochrome information to be extracted out from described memory storage according to the brightness curve of the temperature that transmits from described sensing device, judge whether the monochrome information of extraction and former monochrome information adapt, and regulate the brightness of described display device.
2, the brightness controlling device of video display as claimed in claim 1 is characterized in that described sensing device comprises:
Illuminance transducer is an illumination of utilizing induction element to come the described video display periphery of perception through certain time interval;
Temperature sensor is through the temperature of the described display device of certain time interval perception.
3, the brightness controlling device of video display as claimed in claim 1 is characterized in that:
If the monochrome information that described control device extracts is identical with former brightness, no longer regulate the brightness of described display device; If incompatible, the brightness of described display device is regulated.
4, a kind of brightness controlling device of video display as claimed in claim 1 that utilizes carries out brightness control method, it is characterized in that comprising following several steps:
First step: through certain time interval perception video display periphery illumination and described display device temperature;
Second step: from memory storage, extract the most suitable monochrome information according to sense temperature;
Third step: judge that whether the monochrome information extract adapts with former brightness;
The 4th step: judged result is regulated the brightness of described display device if the monochrome information that extracts is incompatible with monochrome information in the past, adapts to such an extent as to make with monochrome information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410051642 CN1753077A (en) | 2004-09-24 | 2004-09-24 | Brightness control method of image display and its device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410051642 CN1753077A (en) | 2004-09-24 | 2004-09-24 | Brightness control method of image display and its device |
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| CN1753077A true CN1753077A (en) | 2006-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200410051642 Pending CN1753077A (en) | 2004-09-24 | 2004-09-24 | Brightness control method of image display and its device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101281726B (en) * | 2008-05-21 | 2010-06-23 | 旭丽电子(广州)有限公司 | Automatic control system for image and sound |
| CN101136192B (en) * | 2006-08-11 | 2013-06-05 | Geo半导体有限公司 | System and method for automated calibration and correction of display geometry and color |
-
2004
- 2004-09-24 CN CN 200410051642 patent/CN1753077A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101136192B (en) * | 2006-08-11 | 2013-06-05 | Geo半导体有限公司 | System and method for automated calibration and correction of display geometry and color |
| CN101281726B (en) * | 2008-05-21 | 2010-06-23 | 旭丽电子(广州)有限公司 | Automatic control system for image and sound |
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