CN102915706A - Elevator liquid crystal display system provided with backlight control device and control method of elevator liquid crystal display system - Google Patents
Elevator liquid crystal display system provided with backlight control device and control method of elevator liquid crystal display system Download PDFInfo
- Publication number
- CN102915706A CN102915706A CN2011102199726A CN201110219972A CN102915706A CN 102915706 A CN102915706 A CN 102915706A CN 2011102199726 A CN2011102199726 A CN 2011102199726A CN 201110219972 A CN201110219972 A CN 201110219972A CN 102915706 A CN102915706 A CN 102915706A
- Authority
- CN
- China
- Prior art keywords
- backlight
- illumination
- liquid crystal
- crystal display
- expectation
- 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.)
- Granted
Links
Images
Landscapes
- Liquid Crystal Display Device Control (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses an elevator liquid crystal display system provided with a backlight control device. The elevator liquid crystal display system comprises a liquid crystal display unit and a display control unit. The liquid crystal display unit comprises a liquid crystal display panel and a backlight source, wherein the backlight source is connected with a backlight control device through a signal transmission line, the backlight control device detects environmental illuminance of the liquid crystal display unit, or detects both environment illuminance of the liquid crystal display unit and brightness of the backlight source and then controls the brightness of the backlight source according to a detection result. The backlight brightness can be regulated automatically according to service environment of the elevator liquid crystal display system, so that the elevator liquid crystal display system can provide information display service for passengers in suitable brightness, and the backlight source is turned down or even turned off when no passengers on landing of an elevator. Accordingly, the elevator liquid crystal display system has the advantages of long service life, low energy consumption, no maintenance, in-time regulation, no affection on calling of the landing of the elevator, and the like, and effectively overcomes defects of maintenance complexity and delayed regulation in the prior art. The invention further discloses a control method of the elevator liquid crystal display system.
Description
Technical field
The present invention relates to a kind of elevator information display device, particularly relate to a kind of elevator liquid crystal display systems that is provided with backlight control apparatus.The invention still further relates to a kind of control method of elevator liquid crystal display systems.
Background technology
Liquid crystal indicator is because the demonstration that it has contains much information, the plurality of advantages such as abundant in content, lively has obtained progressively promoting in recent years in the information of elevator shows.
Because the display effect of liquid crystal indicator easily is subject to its brightness impact (being ambient light illumination) of environment for use on every side, so need to adjust according to the ambient brightness of its place floor.At present, the public technology that relates to the brightness adjustment of liquid crystal indicator mainly contains Japanese kokai publication hei 10-333628 and Chinese invention patent application 201010251102.2 (display control unit of elevator device).The former discloses the method that a kind of landing button that utilizes each floor is adjusted liquid crystal indicator brightness, but the method is take an elevator as prerequisite, can not be applied to have the elevator device of many numbering equipments.The disclosed liquid crystal indicator luminance regulating method of the latter is the landing button that utilizes each floor equally, but has overcome the former and can not be applied to the shortcoming of many elevator devices by setting up the pattern switching part and calling out the registration judging part.But there is a common shortcoming in these two kinds of methods, namely all need the overlooker to check termly and carry out brightness adjustment.Obviously, the overlooker make regular check on mode exist safeguard loaded down with trivial details, adjust untimely, as to affect floor call when the adjusting weak points such as normal use.
In addition, consider from the serviceable life that prolongs backlight source of liquid crystal display apparatus and the angle of saving electric energy, in time reduce back light source brightness when the backlight of wishing liquid crystal indicator does not have the passenger in stop or even close backlight, reach with this and increase the service life and energy-conservation purpose.
Therefore, need a kind of elevator liquid crystal display systems backlight control apparatus that can automatically carry out according to the environment for use of elevator liquid crystal display systems the backlight illumination adjustment of exploitation, under the control of this backlight control apparatus, the elevator liquid crystal display systems can provide take suitable brightness as the passenger information to show service, and when stop does not have the passenger, reduce or even close backlight effectively prolong the elevator liquid crystal display systems serviceable life, reduce its power consumption.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of elevator liquid crystal display systems that is provided with backlight control apparatus, it can be adjusted the brightness of backlight in the elevator liquid crystal display systems, and when stop does not have the passenger, reduce or even close backlight effectively prolong the elevator liquid crystal display systems serviceable life, reduce its power consumption.
For solving the problems of the technologies described above, the technical solution that the present invention is provided with the elevator liquid crystal display systems of backlight control apparatus is:
Comprise liquid crystal display, indicative control unit, liquid crystal display is connected by signal transmssion line with indicative control unit; Described liquid crystal display comprises display panels, backlight, and backlight is arranged at the back side of display panel; Described backlight is connected by signal transmssion line with backlight control apparatus; Described backlight control apparatus detects the ambient light illumination of described liquid crystal display, or the brightness of ambient light illumination and described backlight, and according to testing result back light source brightness is controlled.
Described backlight control apparatus comprises the ambient light illumination detecting device, for detection of the illumination of liquid crystal display place environment; Backlight controller is used for controlling the brightness of described backlight; Expectation backlight illumination generation unit is for the expectation backlight illumination that generates described backlight; The ambient light illumination that described expectation backlight illumination generation unit detects according to the ambient light illumination detecting device generates the expectation backlight illumination of described backlight; Described backlight controller is according to the expectation backlight illumination of the described backlight of expectation backlight illumination generation unit generation, perhaps resulting final expectation backlight illumination after stack is by one or more the determined amount of bias in the floor call of date, time and elevator is adjusted to the expectation backlight illumination with back light source brightness.
The backlight control signal of described backlight controller output is directly exported to described backlight, perhaps be admitted to a smoothing processing unit as input, the level and smooth backlight control signal of smoothing processing unit output is output to described backlight, by this with the brightness adjustment of described backlight to expecting backlight illumination.
The present invention also provides a kind of control method that is provided with the elevator liquid crystal display systems of backlight control apparatus, and its technical solution is:
Described backlight control apparatus is carried out the detection of the ambient light illumination of described liquid crystal display or ambient light illumination and back light source brightness and the control action that back light source brightness is implemented thereof with periodic manner.
Further, comprise the steps:
Step 1, ambient light illumination detecting device detect the illumination of liquid crystal display place environment;
Step 2, expectation backlight illumination generation unit generate the expectation backlight illumination of described backlight according to the ambient light illumination that detects;
The expectation backlight illumination that described step 2 expectation backlight illumination generation unit generates described backlight is carried out with periodic manner.
By the expectation backlight illumination that described step 2 obtains, directly conduct is used for generating the expectation backlight illumination of backlight control signal; Perhaps after stack is by one or more the determined amount of bias in the floor call of date, time and elevator, as the final expectation backlight illumination that is used for generating backlight control signal.
Step 3, backlight controller generate backlight control signal with open loop control mode;
Described step 3 backlight controller generates backlight control signal and carries out with periodic manner.
Step 4, utilize backlight control signal that control is implemented in the brightness of described backlight.
The backlight control signal of backlight controller output is re-used as the final backlight control signal that back light source brightness is adjusted in the described step 4 after carrying out smoothing processing through a smoothing processing unit, realizes the gradual change adjustment of back light source brightness with this.
Perhaps, described backlight control apparatus comprises the ambient light illumination detecting device, for detection of the illumination of liquid crystal display place environment; The back light source brightness detecting device is for detection of the intrinsic brilliance of described backlight; Backlight controller is used for controlling the brightness of described backlight; Expectation backlight illumination generation unit is for the expectation backlight illumination that generates described backlight; The ambient light illumination that described expectation backlight illumination generation unit detects according to the ambient light illumination detecting device generates the expectation backlight illumination of described backlight, described backlight controller is according to the expectation backlight illumination of the described backlight of expectation backlight illumination generation unit generation, the intrinsic brilliance of the described backlight that perhaps resulting final expectation backlight illumination after stack is by one or more the determined amount of bias in the floor call of date, time and elevator, and described back light source brightness detecting device detects is adjusted to the expectation backlight illumination with back light source brightness.
The backlight control signal of described backlight controller output is directly exported to described backlight, perhaps be admitted to a smoothing processing unit as input, the level and smooth backlight control signal of smoothing processing unit output is output to described backlight, by this with the brightness adjustment of described backlight to expecting backlight illumination.
The control method of this elevator liquid crystal display systems comprises the steps:
Step 1, ambient light illumination detecting device detect the illumination of liquid crystal display place environment; The back light source brightness detecting device detects the intrinsic brilliance of described backlight;
Step 2, expectation backlight illumination generation unit generate the expectation backlight illumination of described backlight according to the ambient light illumination that detects;
The expectation backlight illumination that described step 2 expectation backlight illumination generation unit generates described backlight is carried out with periodic manner.
By the expectation backlight illumination that described step 2 obtains, directly conduct is used for generating the expectation backlight illumination of backlight control signal; Perhaps after stack is by one or more the determined amount of bias in the floor call of date, time and elevator, as the final expectation backlight illumination that is used for generating backlight control signal.
Step 3, backlight controller generate backlight control signal according to the intrinsic brilliance of expectation backlight illumination and backlight with the close-loop feedback control mode;
Described step 3 backlight controller generates backlight control signal and carries out with periodic manner.
Step 4, utilize backlight control signal that control is implemented in the brightness of described backlight.
The backlight control signal of backlight controller output is re-used as the final backlight control signal that back light source brightness is adjusted in the described step 4 after carrying out smoothing processing through a smoothing processing unit, realizes the gradual change adjustment of back light source brightness with this.
The beneficial effect that the present invention can reach is:
The present invention can carry out automatically according to the environment for use of elevator liquid crystal display systems the backlight illumination adjustment of elevator liquid crystal display systems, under the control of this backlight control apparatus, the elevator liquid crystal display systems can provide take suitable brightness as the passenger information to show service, and when stop has the passenger, reduce or even close backlight, thus effectively prolong the elevator liquid crystal display systems serviceable life, reduce its power consumption.Be in particular in following some:
1) by periodically detecting ambient light illumination or ambient light illumination and the back light source brightness of described liquid crystal display, realizes the automatic adjusting of back light source brightness, overcome prior art and safeguarded shortcoming loaded down with trivial details, that adjustment is untimely;
2) adjusting of back light source brightness need not by means of landing button, does not affect the normal use of floor call during adjustment;
3) by regulate the final expectation backlight illumination of backlight according to information such as date, time and floor calls, can effectively prolong the elevator liquid crystal display systems serviceable life, reduce its power consumption.
The maximum difference of elevator liquid crystal display systems backlight control apparatus of the present invention and prior art is: elevator liquid crystal display systems backlight control apparatus of the present invention is finished automatically to the adjustment of back light source brightness, and prior art is then made regular check on by the overlooker and finished.
Description of drawings
The present invention is further detailed explanation below in conjunction with accompanying drawing and embodiment:
Fig. 1 is the general structure schematic diagram that the present invention is provided with the elevator liquid crystal display systems of backlight control apparatus;
Fig. 2 to Fig. 5 is the workflow schematic diagram of the first embodiment of the present invention;
Fig. 6 to Fig. 9 is the workflow schematic diagram of the second embodiment of the present invention.
Embodiment
As shown in Figure 1, the elevator liquid crystal display systems that is provided with backlight control apparatus comprises liquid crystal display, indicative control unit, and liquid crystal display is connected by signal transmssion line with indicative control unit;
Wherein liquid crystal display further comprises display panels, backlight, backlight control apparatus; Backlight is arranged at the back side of display panels, and backlight control apparatus is connected by signal transmssion line with backlight; Backlight control apparatus is used for adjusting the brightness of backlight.
Embodiment one
The first embodiment of backlight control apparatus of the present invention comprise for detection of the ambient light illumination detecting device of liquid crystal display place ambient light illumination, be used for the control back light source brightness backlight controller, be used for generating the expectation backlight illumination generation unit of the expectation backlight illumination of backlight;
The ambient light illumination that expectation backlight illumination generation unit detects according to the ambient light illumination detecting device generates the expectation backlight illumination of described backlight; Described backlight controller is according to the expectation backlight illumination of the described backlight of expectation backlight illumination generation unit generation, perhaps resulting final expectation backlight illumination after stack is by one or more the determined amount of bias in the floor call of date, time and elevator is adjusted to the expectation backlight illumination with back light source brightness.
Backlight controller is adjusted to the expectation backlight illumination according to the ambient light illumination signal of ambient light illumination detecting device output with back light source brightness, and detailed process comprises the steps: as shown in Figure 2
Step 1, detected the illumination of liquid crystal display place environment by the ambient light illumination detecting device, its testing result is as the ambient light illumination signal and deliver to expectation backlight illumination generation unit;
Step 2, expectation backlight illumination generation unit, generate the expectation backlight illumination of backlight, and deliver to backlight controller according to the relation between ambient light illumination and the corresponding backlight illumination of best liquid crystal display effect according to the ambient light illumination signal that receives;
Step 3, backlight controller generate the backlight control signal corresponding with the expectation backlight illumination, and deliver to backlight according to the ambient light illumination signal that receives;
Step 4, backlight produce backlight with the backlight control signal corresponding brightness under the control action of the backlight control signal of sending here, so far finish the control to back light source brightness.
Obviously, in above-mentioned control procedure, backlight controller does not utilize any actual information (mainly referring to the intrinsic brilliance backlight that backlight sends) of backlight when implementing control action, therefore the direction of transfer of used signal is from left to right, and what above-mentioned backlight controller was controlled employing to backlight is open loop control mode.
For serviceable life of effectively prolonging the elevator liquid crystal display systems, reduce its power consumption, when can not have the passenger at the stop at the display panel place of elevator liquid crystal display systems, the temporary transient brightness that reduces backlight, even in the time can judging stop and do not have the passenger for a long time, close backlight fully.And whether stop has the passenger and whether will not have the passenger within the following long period, can make comparatively accurately by comprehensive current date, time and floor call etc. and estimating.Such as: for the elevator in being installed in commercial building, the floor of considerable part does not nearly all have the passenger and takes elevator during festivals or holidays, and the LCD backlight control device of these floors just can cut out backlight like this; In some time period, some floor the long period can occur does not equally all have passenger's situation, so the landing button of these floors the long period can occur and do not have the situation of calling, this moment then can reduce the backlight illumination of backlight.This can expect that the basis of backlight illumination increases an amount of bias Δ and realizes by the backlight that expectation backlight illumination generation unit in above-mentioned steps 2 generates, as shown in Figure 3.
In the present embodiment, the backlight control signal of backlight controller output is re-used as the level and smooth backlight control signal that back light source brightness is adjusted after carrying out smoothing processing through a smoothing processing unit, realize the gradual change adjustment of back light source brightness with this, as shown in Figure 4 and Figure 5.
Embodiment two
The second embodiment of backlight control apparatus of the present invention comprise for detection of the ambient light illumination detecting device of liquid crystal display place ambient light illumination, for detection of the back light source brightness detecting device of the intrinsic brilliance of backlight, be used for the control back light source brightness backlight controller, be used for generating the expectation backlight illumination generation unit of the expectation backlight illumination of described backlight;
The ambient light illumination that expectation backlight illumination generation unit detects according to the ambient light illumination detecting device generates the expectation backlight illumination of described backlight, described backlight controller is according to the expectation backlight illumination of the described backlight of expectation backlight illumination generation unit generation, the intrinsic brilliance of the described backlight that perhaps resulting final expectation backlight illumination after stack is by one or more the determined amount of bias in the floor call of date, time and elevator, and described back light source brightness detecting device detects is adjusted to the expectation backlight illumination with back light source brightness.
Backlight controller is adjusted to the expectation backlight illumination according to the intrinsic brilliance of the backlight that ambient light illumination signal and the back light source brightness detecting device of ambient light illumination detecting device output detects with back light source brightness, and detailed process comprises the steps: as shown in Figure 6
Step 1, detected the illumination of liquid crystal display place environment by the ambient light illumination detecting device, its testing result is as the ambient light illumination signal and deliver to expectation backlight illumination generation unit;
Step 2, expectation backlight illumination generation unit according to the relation between ambient light illumination and the corresponding backlight illumination of best liquid crystal display effect, generate the expectation backlight illumination of backlight according to the ambient light illumination signal that receives;
Step 3, detected the intrinsic brilliance of backlight by the back light source brightness detecting device, its testing result is delivered to backlight controller with the difference of the expectation backlight illumination of expectation backlight illumination generation unit output;
Step 4, backlight controller generate backlight control signal according to the signal that receives, and deliver to backlight;
Step 5, backlight produce backlight with the backlight control signal corresponding brightness under the control action of the backlight control signal of sending here, so far finish the control to back light source brightness.
In above-mentioned control procedure, backlight controller has utilized when implementing control action from the intrinsic brilliance information of the backlight of back light source brightness detecting device and has controlled as feedback signal, and what therefore above-mentioned backlight controller was controlled employing to backlight is the close-loop feedback control mode.
Similar to embodiment one, for serviceable life of effectively prolonging the elevator liquid crystal display systems, reduce its power consumption, the basis that can expect the backlight expectation backlight illumination that the backlight illumination generation unit generates in above-mentioned steps 2 increases an amount of bias Δ realizes, as shown in Figure 7.
Same similar to embodiment one, the backlight control signal of backlight controller output is re-used as the level and smooth backlight control signal that back light source brightness is adjusted after carrying out smoothing processing through a smoothing processing unit, realize the gradual change adjustment of back light source brightness with this, such as Fig. 8 and shown in Figure 9.
Among the present invention, described backlight control apparatus is carried out the detection of the ambient light illumination of liquid crystal display or ambient light illumination and back light source brightness and the control action that back light source brightness is implemented thereof with periodic manner.Be that step 2, step 3 and step 4 are carried out once at set intervals.
Claims (13)
1. an elevator liquid crystal display systems that is provided with backlight control apparatus comprises liquid crystal display, indicative control unit, and liquid crystal display is connected by signal transmssion line with indicative control unit; Described liquid crystal display comprises display panels, backlight, and backlight is arranged at the back side of display panel; It is characterized in that: described backlight is connected by signal transmssion line with backlight control apparatus;
Described backlight control apparatus detects the ambient light illumination of described liquid crystal display, or the brightness of ambient light illumination and described backlight, and according to testing result back light source brightness is controlled.
2. the elevator liquid crystal display systems that is provided with backlight control apparatus according to claim 1 is characterized in that, described backlight control apparatus comprises
The ambient light illumination detecting device is for detection of the illumination of liquid crystal display place environment;
Backlight controller is used for controlling the brightness of described backlight;
Expectation backlight illumination generation unit is for the expectation backlight illumination that generates described backlight;
The ambient light illumination that described expectation backlight illumination generation unit detects according to the ambient light illumination detecting device generates the expectation backlight illumination of described backlight; Described backlight controller is according to the expectation backlight illumination of the described backlight of expectation backlight illumination generation unit generation, perhaps resulting final expectation backlight illumination after stack is by one or more the determined amount of bias in the floor call of date, time and elevator is adjusted to the expectation backlight illumination with back light source brightness.
3. the elevator liquid crystal display systems that is provided with backlight control apparatus according to claim 2, it is characterized in that, the backlight control signal of described backlight controller output is directly exported to described backlight, perhaps be admitted to a smoothing processing unit as input, the level and smooth backlight control signal of smoothing processing unit output is output to described backlight, by this with the brightness adjustment of described backlight to expecting backlight illumination.
4. a control method that is provided with the elevator liquid crystal display systems of backlight control apparatus claimed in claim 2 is characterized in that, comprises the steps:
Step 1, ambient light illumination detecting device detect the illumination of liquid crystal display place environment;
Step 2, expectation backlight illumination generation unit generate the expectation backlight illumination of described backlight according to the ambient light illumination that detects;
Step 3, backlight controller generate backlight control signal with open loop control mode;
Step 4, utilize backlight control signal that control is implemented in the brightness of described backlight.
5. the control method of elevator liquid crystal display systems according to claim 4 is characterized in that, the expectation backlight illumination that described step 2 expectation backlight illumination generation unit generates described backlight is carried out with periodic manner; Described step 3 backlight controller generates backlight control signal and carries out with periodic manner.
6. the control method of elevator liquid crystal display systems according to claim 4 is characterized in that, by the expectation backlight illumination that described step 2 obtains, directly conduct is used for generating the expectation backlight illumination of backlight control signal; Perhaps after stack is by one or more the determined amount of bias in the floor call of date, time and elevator, as the final expectation backlight illumination that is used for generating backlight control signal.
7. according to claim 4 or the control method of 6 described elevator liquid crystal display systemss, it is characterized in that, the backlight control signal of backlight controller output is re-used as the final backlight control signal that back light source brightness is adjusted in the described step 4 after carrying out smoothing processing through a smoothing processing unit, realizes the gradual change adjustment of back light source brightness with this.
8. the elevator liquid crystal display systems that is provided with backlight control apparatus according to claim 1 is characterized in that, described backlight control apparatus comprises
The ambient light illumination detecting device is for detection of the illumination of liquid crystal display place environment;
The back light source brightness detecting device is for detection of the intrinsic brilliance of described backlight;
Backlight controller is used for controlling the brightness of described backlight;
Expectation backlight illumination generation unit is for the expectation backlight illumination that generates described backlight;
The ambient light illumination that described expectation backlight illumination generation unit detects according to the ambient light illumination detecting device generates the expectation backlight illumination of described backlight, described backlight controller is according to the expectation backlight illumination of the described backlight of expectation backlight illumination generation unit generation, the intrinsic brilliance of the described backlight that perhaps resulting final expectation backlight illumination after stack is by one or more the determined amount of bias in the floor call of date, time and elevator, and described back light source brightness detecting device detects is adjusted to the expectation backlight illumination with back light source brightness.
9. the elevator liquid crystal display systems that is provided with backlight control apparatus according to claim 8, it is characterized in that, the backlight control signal of described backlight controller output is directly exported to described backlight, perhaps be admitted to a smoothing processing unit as input, the level and smooth backlight control signal of smoothing processing unit output is output to described backlight, by this with the brightness adjustment of described backlight to expecting backlight illumination.
10. a control method that is provided with the elevator liquid crystal display systems of backlight control apparatus claimed in claim 8 is characterized in that, comprises the steps:
Step 1, ambient light illumination detecting device detect the illumination of liquid crystal display place environment; The back light source brightness detecting device detects the intrinsic brilliance of described backlight;
Step 2, expectation backlight illumination generation unit generate the expectation backlight illumination of described backlight according to the ambient light illumination that detects;
Step 3, backlight controller generate backlight control signal according to the intrinsic brilliance of expectation backlight illumination and backlight with the close-loop feedback control mode;
Step 4, utilize backlight control signal that control is implemented in the brightness of described backlight.
11. the control method of elevator liquid crystal display systems according to claim 10 is characterized in that, the expectation backlight illumination that described step 2 expectation backlight illumination generation unit generates described backlight is carried out with periodic manner; Described step 3 backlight controller generates backlight control signal and carries out with periodic manner.
12. the control method of elevator liquid crystal display systems according to claim 10 is characterized in that, by the expectation backlight illumination that described step 2 obtains, directly conduct is used for generating the expectation backlight illumination of backlight control signal; Perhaps after stack is by one or more the determined amount of bias in the floor call of date, time and elevator, as the final expectation backlight illumination that is used for generating backlight control signal.
13. according to claim 10 or the control method of 12 described elevator liquid crystal display systemss, it is characterized in that, the backlight control signal of backlight controller output is re-used as the final backlight control signal that back light source brightness is adjusted in the described step 4 after carrying out smoothing processing through a smoothing processing unit, realizes the gradual change adjustment of back light source brightness with this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110219972.6A CN102915706B (en) | 2011-08-02 | 2011-08-02 | Be provided with elevator liquid crystal display systems and the control method thereof of backlight control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110219972.6A CN102915706B (en) | 2011-08-02 | 2011-08-02 | Be provided with elevator liquid crystal display systems and the control method thereof of backlight control apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102915706A true CN102915706A (en) | 2013-02-06 |
| CN102915706B CN102915706B (en) | 2015-10-28 |
Family
ID=47614048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110219972.6A Active CN102915706B (en) | 2011-08-02 | 2011-08-02 | Be provided with elevator liquid crystal display systems and the control method thereof of backlight control apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102915706B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107564479A (en) * | 2017-09-12 | 2018-01-09 | 京东方科技集团股份有限公司 | Backlight adjusting method and backlight regulating system |
| CN110550528A (en) * | 2018-06-02 | 2019-12-10 | 天津滨海三洋电梯有限公司 | Villa elevator capable of adjusting illumination intensity in elevator |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040011595A1 (en) * | 2002-07-16 | 2004-01-22 | Chi-Jung Hong | Automatically illumination control device of an elevator display screen |
| US20040145558A1 (en) * | 2003-01-29 | 2004-07-29 | Wen-Yen Cheng | Control device for dynamically adjusting backlight brightness and color of computer display |
| CN101136181A (en) * | 2007-09-25 | 2008-03-05 | 京东方科技集团股份有限公司 | Back light source brightness regulating mechanism, method and display apparatus thereof |
| CN101409047A (en) * | 2007-10-10 | 2009-04-15 | 群康科技(深圳)有限公司 | Backlight regulating circuit |
| JP2010006520A (en) * | 2008-06-25 | 2010-01-14 | Hitachi Ltd | In-car display device for elevator |
| CN201397659Y (en) * | 2009-04-23 | 2010-02-03 | 北京德为视讯科技股份有限公司 | Environmental self-adaptive liquid crystal display |
| CN101765263A (en) * | 2008-12-19 | 2010-06-30 | 张家港市万科信息技术有限公司 | Induction-type backlight controlling device |
-
2011
- 2011-08-02 CN CN201110219972.6A patent/CN102915706B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040011595A1 (en) * | 2002-07-16 | 2004-01-22 | Chi-Jung Hong | Automatically illumination control device of an elevator display screen |
| US20040145558A1 (en) * | 2003-01-29 | 2004-07-29 | Wen-Yen Cheng | Control device for dynamically adjusting backlight brightness and color of computer display |
| CN101136181A (en) * | 2007-09-25 | 2008-03-05 | 京东方科技集团股份有限公司 | Back light source brightness regulating mechanism, method and display apparatus thereof |
| CN101409047A (en) * | 2007-10-10 | 2009-04-15 | 群康科技(深圳)有限公司 | Backlight regulating circuit |
| JP2010006520A (en) * | 2008-06-25 | 2010-01-14 | Hitachi Ltd | In-car display device for elevator |
| CN101765263A (en) * | 2008-12-19 | 2010-06-30 | 张家港市万科信息技术有限公司 | Induction-type backlight controlling device |
| CN201397659Y (en) * | 2009-04-23 | 2010-02-03 | 北京德为视讯科技股份有限公司 | Environmental self-adaptive liquid crystal display |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107564479A (en) * | 2017-09-12 | 2018-01-09 | 京东方科技集团股份有限公司 | Backlight adjusting method and backlight regulating system |
| US10902768B2 (en) | 2017-09-12 | 2021-01-26 | K-Tronics (Suzhou) Technology Co., Ltd. | Backlight adjustment method and backlight adjustment system for compensating backlight brightness of display device by adjusting backlight coefficient of the display device according to brightness compensation coefficient |
| CN107564479B (en) * | 2017-09-12 | 2021-12-17 | 高创(苏州)电子有限公司 | Backlight adjusting method and backlight adjusting system |
| CN110550528A (en) * | 2018-06-02 | 2019-12-10 | 天津滨海三洋电梯有限公司 | Villa elevator capable of adjusting illumination intensity in elevator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102915706B (en) | 2015-10-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8344660B2 (en) | Lighting control | |
| CN102035919B (en) | Method and device for controlling display brightness | |
| CN101349833B (en) | Apparatus and method for adjusting light ray and backlight module unit and LCD device using the same | |
| CN101436385B (en) | Mechanism for saving power supply of display and control method thereof | |
| CN101369405A (en) | Compensation apparatus for adjusting display brightness and regulation method of the compensation apparatus | |
| CN103915071A (en) | Display panel power supply voltage regulating device and method and display device | |
| CN1829410A (en) | Method for automatically adjusting lighting equipment illumination | |
| CN106162984A (en) | Double optical sensor led street lamp control system | |
| CN102915706A (en) | Elevator liquid crystal display system provided with backlight control device and control method of elevator liquid crystal display system | |
| WO2024104352A1 (en) | Regulation system and method for constant-current voltage-equalization driving of led lamp | |
| CN102348084A (en) | Television system and method for reducing power consumption of the television without signal | |
| WO2009013986A1 (en) | Display device and method for driving display device | |
| CN105629648B (en) | A kind of double-colored wheel system for laser projection | |
| CN103052216B (en) | LED (light emitting diode) control method and system based on light demands | |
| US20110242503A1 (en) | Projection Device and Projection Light Source Control Method Thereof | |
| CN103413528B (en) | Integrated system and method for automatically regulating luminance after LED display screen gets out of control | |
| CN101630494B (en) | Method for improving dynamic contrast ratio of liquid crystal display | |
| CN101388177A (en) | Image compensation methods and image display systems | |
| US20160334820A1 (en) | Power supply system and power supply method thereof | |
| CN103052218A (en) | Control method and system of multiple LED (Light Emitting Diode) lamps | |
| CN107172777A (en) | A kind of street lamp brightness automatic control system | |
| CN107295729A (en) | A kind of street lamp brightness autocontrol method | |
| CN204129827U (en) | Intelligent invoice number identification system | |
| CN212259383U (en) | Coal mine tunnel lighting control system | |
| CN202650498U (en) | Low energy consumption liquid crystal monitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |