WO2011035641A1 - 一种屏幕亮度的控制方法及装置 - Google Patents
一种屏幕亮度的控制方法及装置 Download PDFInfo
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- WO2011035641A1 WO2011035641A1 PCT/CN2010/075311 CN2010075311W WO2011035641A1 WO 2011035641 A1 WO2011035641 A1 WO 2011035641A1 CN 2010075311 W CN2010075311 W CN 2010075311W WO 2011035641 A1 WO2011035641 A1 WO 2011035641A1
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- value
- brightness
- signal strength
- luminance signal
- signal intensity
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/57—Control of contrast or brightness
- H04N5/58—Control of contrast or brightness in dependence upon ambient light
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
- H04M1/72454—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions according to context-related or environment-related conditions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/42202—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS] environmental sensors, e.g. for detecting temperature, luminosity, pressure, earthquakes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4318—Generation of visual interfaces for content selection or interaction; Content or additional data rendering by altering the content in the rendering process, e.g. blanking, blurring or masking an image region
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
- G09G2320/0653—Controlling or limiting the speed of brightness adjustment of the illumination source
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
- G09G2360/144—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light being ambient light
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
Definitions
- the present invention relates to the field of display control, and in particular, to a method and apparatus for controlling screen brightness.
- the backlight of the mobile phone screen will be too bright and too glaring in the dim environment.
- the mobile phone adds a light sensor to automatically change the brightness of the screen backlight.
- the processing unit determines whether the obtained ambient illuminance value is greater than the previously determined ambient illuminance value, and if the obtained ambient illuminance value is greater than the last determined ambient illuminance value, then the brightness of the mobile phone screen is raised, when the above two determinations If the result is no, the brightness of the screen of the mobile phone is lowered.
- the invention provides a method and a device for controlling the brightness of a screen, which are used to solve the problem that when the brightness of the screen changes with the external environment in the prior art, the brightness changes greatly, which causes the brightness to be constantly adjusted, resulting in excessive current consumption. problem.
- the present invention provides a method for controlling the brightness of a screen, comprising: acquiring a brightness signal intensity value of an external environment by an optical sensor and transmitting the value to a comparator;
- the comparator compares the received luminance signal strength value with the stored luminance signal strength value, and outputs a comparison result to the integrator; If the comparison result is that the received luminance signal strength value is higher than the stored luminance signal strength value, the integrator increases the stored luminance signal strength value by a fixed value according to the comparison result; and if the comparison result is received The brightness signal intensity value is lower than the saved brightness signal intensity value, and the integrator reduces the saved brightness signal intensity value by a fixed value according to the comparison result;
- the saved luminance signal strength value is used to control the current amplitude of the current screen luminance.
- the method further includes:
- the fixed value is Increased; if at least two consecutive comparisons result in a received luminance signal strength value that is lower than the stored luminance signal strength value, then the fixed value is decreased.
- the method further includes:
- the brightness signal strength value after adding the fixed value is compared with the preset upper limit value. If the brightness signal strength value after adding the fixed value is greater than the upper limit value, the upper limit value is sent as the current brightness signal intensity value. To the comparator save, and used to control the current amplitude of the current screen brightness;
- the brightness signal strength value after the fixed value is lowered is compared with the preset lower limit value. If the brightness signal strength value after the fixed value is decreased is less than the lower limit value, the lower limit value is sent as the current brightness signal intensity value. To the comparator save, and used to control the current amplitude of the current screen brightness.
- the present invention also provides a screen brightness control device, including a light sensor, a comparator and an integrator:
- the light sensor is configured to obtain a brightness signal intensity value of the external environment and transmit the brightness signal intensity value to the comparator; the comparator is configured to compare the received brightness signal intensity value with the saved brightness signal intensity value to obtain a comparison result;
- the integrator is configured to receive the comparison result, if the comparison result is that the received luminance signal strength value is higher than the saved luminance signal strength value, the saved luminance signal strength value is increased by a fixed value;
- the comparison result is that the received luminance signal strength value is lower than the saved luminance signal strength value, and the saved luminance signal strength value is lowered by a fixed value; the saved luminance signal is strong
- the degree value is used to control the current amplitude of the current screen brightness.
- the apparatus further comprises a code detector and an amplitude adjuster, wherein:
- the code detector is configured to receive a comparison result output by the comparator, perform a code detection on the comparison result, and send the code detection result to the amplitude adjuster;
- the amplitude adjuster is configured to adjust the fixed value according to the code detection result, and send the adjusted fixed value to the integrator.
- the amplitude adjuster is configured to increase the fixed value if the comparison result of at least two consecutive times is that the received luminance signal strength value is higher than the saved luminance signal strength value; if at least two consecutive The result of the second comparison is that the received luminance signal strength value is lower than the stored luminance signal strength value, and the fixed value is decreased.
- the device further comprises a limiter controller,
- the limiting controller is configured to compare the brightness signal intensity value of the integrator output with a fixed value to a preset upper limit value, and if the integrator output increases the fixed value, the brightness signal intensity value is greater than
- the upper limit value is used to control the current amplitude of the current screen brightness, and the upper limit value is sent to the comparator as the current brightness signal intensity value; the brightness signal intensity value after the fixed value is lowered and the pre-limit
- the lower limit value is compared, and if the brightness signal strength value after the fixed value is lower than the lower limit value, the current limit of the current screen brightness is controlled by the lower limit value, and the lower limit value is used as the current brightness.
- the signal strength value is sent to the comparator for saving.
- the method and apparatus provided by the implementation of the present invention are applied, so that the liquid crystal screen can provide relatively stable screen brightness and reduce visual fatigue of the user in the case where the surrounding brightness is unstable.
- FIG. 1 is a flowchart of a method for controlling screen brightness according to an embodiment of the present invention
- FIG. 2 is a schematic diagram of brightness control of a method for controlling brightness of a screen according to an embodiment of the present invention
- FIG. 3 is a structural diagram of an apparatus for controlling screen brightness according to an embodiment of the present invention.
- the embodiment of the invention provides a method for controlling the brightness of a screen, the method comprising: acquiring an intensity value of a brightness signal of an external environment and transmitting the value to a comparator; and comparing the received brightness value of the brightness signal with the stored brightness signal intensity value Comparing, and outputting a comparison result; if the comparison result is that the received luminance signal intensity value is higher than the saved luminance signal strength value, the integrator increases the stored luminance signal strength value by a fixed value according to the comparison result; The comparison result is that the received luminance signal strength value is lower than the saved luminance signal strength value, and the integrator reduces the saved luminance signal strength value by a fixed value according to the comparison result, wherein the saved luminance signal strength value is used for Controls the amplitude of the current screen brightness current.
- a method for controlling screen brightness specifically includes: Step 101: A light sensor transmits a brightness signal intensity of the surrounding to a comparator.
- Step 102 The comparator compares the brightness signal intensity value sent by the light sensor with the brightness signal strength value saved by the comparator, to obtain a comparison result;
- Step 103 Adjust, by using the comparison result, the saved luminance signal strength value. If the comparison result is that the received luminance signal strength value is higher than the saved luminance signal strength value, sending the control information to the integrator to save the The brightness signal strength value is increased by a fixed value, and the saved brightness signal intensity value is further used to control the amplitude of the current screen brightness current;
- the fixed value may be set according to an actual application, if the fixed value is set to
- the luminance signal strength value of the control screen current amplitude saved by itself is increased by 1; otherwise, it is decreased by 1.
- the method further includes:
- Step 102A Send the comparison result to the code detector. If at least two consecutive comparison results are that the received luminance signal strength value is higher than the saved luminance signal strength value, the fixed value is increased. If at least two consecutive comparisons result in that the received luminance signal strength value is lower than the stored luminance signal strength value, the fixed value is increased and decreased.
- the embodiment of the present invention further includes: before increasing the stored brightness signal intensity value by a fixed value or decreasing the saved brightness signal intensity value by a fixed value;
- Step 104 Compare the brightness signal strength value after adding the fixed value with a preset upper limit value. If it is greater than the upper limit value, save the upper limit value as the current brightness signal intensity value, and use it to control the current screen. The amplitude of the luminance current; the luminance signal strength value after the fixed value is lowered is compared with the preset lower limit value, and if it is less than the lower limit value, the lower limit value is saved as the current luminance signal strength value, and is used for control The amplitude of the current screen brightness current.
- the comparison result that the received luminance signal intensity value is higher than the saved luminance signal strength value is defined as an active high level, that is, defined as a comparator output 1 and a received luminance signal strength value ratio.
- the saved luminance signal strength value is low and is defined as active low, which is defined as comparator output 0.
- the external signal has been greatly improved.
- the increase in amplitude that is, the change of the fixed value, allows the estimated value of changing the brightness of the screen to quickly track the external change, that is, if the comparator is continuously output (there are more than 2 identical outputs) It is considered that the continuous output) number "1" or "0” such as "11...1” or "00..0” indicates that the surrounding signal has a relatively large change.
- the specific implementation is:
- the code detector detects whether there is continuous output of the same signal detects whether there is continuous output 1 or 0, and if so, outputs a control signal to adjust the fixed value, such as when there are 2 consecutive "1"s
- the code detector starts, and the amplitude modulator adjusts the output amplitude (that is, adjusts the fixed value), such as increasing the size of the fixed value by one time.
- control amplitude modulator After receiving the control signal output from the code detector, the control amplitude modulator will increase the modulation amplitude (which is the modulation amplitude signal); and send the control information to the integrator.
- the output of the signal is periodic, there is a certain interval between the input and output signals, and the signal in the interval is non-changing, that is, non-continuous, so there is a comparison between the current signal and the previous periodic signal, and an estimated value of the current signal is generated.
- the output result of increasing the brightness signal intensity value or decreasing the fixed value is saved), and the estimated value is simultaneously sent to the comparator as a comparison signal; it can also be used as an amplitude control signal output for controlling the screen brightness current.
- the control amplitude modulator in this embodiment is an amplitude adjuster.
- Figure 2 is a simulation of the change in light intensity in the environment.
- the horizontal axis is time, the unit is the sampling period, and the vertical axis is the amplitude (input brightness, output signal amplitude of the control current), in order to avoid excessive current control of screen brightness. Or too low, in the embodiment of the present invention, the amplitude of the current is controlled to a maximum of 7 and the minimum is 2.
- the predetermined increment of each increment is 1 (ie, the fixed value is 1): A. In the time period 0 ⁇ 3, the input brightness is from 2 to 8, and then to 2.
- the brightness signal means that the surrounding environment fluctuates greatly.
- the current of controlling the brightness of the screen is directly adjusted according to the brightness of the light, but in the embodiment of the present invention, after the comparison, the original A fixed value is added to the current, so that the unstable signal becomes a small fluctuation signal, which reduces unnecessary waste of current.
- the input brightness is from 2 to 7.
- the output amplitude increases by only 1 (initial value), but since the brightness of the external environment changes greatly in the second stage, The output cannot reflect the change of the input in time.
- the serial code detector detects the continuous output control signal 1
- the amplitude modulation changes the amplitude increase value to 2, so as to reflect the change of the input signal in time.
- the input brightness changes from 4 to 10.
- the output signal is controlled by the amplitude control signal in the case of tracking the change of the external signal in time, and the maximum output is controlled to 7 to ensure the brightness of the screen. Within acceptable limits, while reducing unnecessary energy consumption.
- the input brightness changes from 10 to 1. It is controlled by the amplitude control signal, and the minimum output is controlled to 2. Under the condition of dark environment, a certain brightness can also be guaranteed.
- an embodiment of the present invention further provides a device for controlling screen brightness, which specifically includes a photo sensor 301, a comparator 302, and an integrator 303:
- the light sensor 301 is configured to obtain a brightness signal intensity value of the external environment and transmit the brightness signal intensity value to the comparator;
- the comparator 302 is configured to compare the received brightness signal intensity value with the saved brightness signal intensity value, and output a comparison result;
- the integrator 303 is configured to receive the comparison result, if the comparison result is that the received luminance signal strength value is higher than the saved luminance signal strength value, the saved luminance signal strength value is increased by a fixed value; As a result, if the received luminance signal strength value is lower than the stored luminance signal strength value, the stored luminance signal strength value is lowered by a fixed value.
- the saved luminance signal strength value is used to control the amplitude of the current screen luminance current.
- the embodiment of the present invention further includes a code detector 304 and an amplitude adjuster 305:
- the code detector 304 is configured to receive a comparison result of the output of the comparator, and perform a code detection on the comparison result, and send the code detection result to the amplitude adjuster 305;
- the amplitude adjuster 305 is configured to adjust the fixed value according to the code detection result, wherein if the serial code detection result is at least two consecutive comparison results, the received brightness signal intensity value is saved If the luminance signal strength value is high, the fixed value is increased; if at least two consecutive comparison results are that the received luminance signal strength value is lower than the saved luminance signal strength value, the fixed value is increased and decreased. ; and the modified fixed value is sent to the integrator 303.
- the embodiment of the invention further includes:
- the limiter controller 306 is configured to compare the brightness signal strength value after adding the fixed value with a preset upper limit value, and if greater than the upper limit value, use the upper limit value to control the amplitude of the current screen brightness current, and Sending the upper limit value as the current brightness signal intensity value to the comparator for saving; comparing the brightness signal intensity value after the fixed value is decreased with the preset lower limit value, and if it is less than the lower limit value, using the lower limit value The value controls the amplitude of the current screen brightness current and sends the lower limit value to the comparator as the current brightness signal strength value.
- the method and device provided by the embodiments of the present invention enable the liquid crystal screen to provide relatively stable screen brightness under the condition that the surrounding brightness is unstable, thereby reducing visual fatigue of the user, and also preventing large fluctuations of the screen current, thereby reducing Current consumption; while maintaining the brightness of the screen and the surrounding environment in the case of changes in ambient brightness.
- the device and method for controlling the brightness of the screen provided by the invention can provide a relatively stable screen brightness under the condition that the surrounding brightness is unstable, thereby reducing visual fatigue of the user and preventing large fluctuations of the screen current. Reduce current consumption; while maintaining the brightness of the screen and the surrounding environment in the event of changes in ambient brightness.
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Description
一种屏幕亮度的控制方法及装置
技术领域
本发明涉及显示控制领域, 尤其涉及一种屏幕亮度的控制方法及装置。
背景技术
为防止在太阳等强光下屏幕暗淡看不清楚, 在昏暗的环境下手机屏幕背 光就会太亮太刺眼, 手机加入了光传感器, 自动改变屏幕背光的亮度。
现有技术中手机屏幕亮度随外界亮度变化的具体实现方案是:
侦测外界环境的亮度, 取得环境照明亮度值, 判断取得的环境照明亮度 值是否等于上次取得的环境照明度值, 当判断结果为是, 则维持手机屏幕的 亮度, 当判断结果为否, 处理单元判断取得的环境照明度值是否大于上一次 确定的环境照明度值, 若取得的环境照明度值大于上一次确定的环境照明度 值, 则调高手机屏幕的亮度, 当上述两次判断结果都为否, 则调低手机屏幕 的亮度。
发明内容
现有技术中在调整手机屏幕的亮度时, 对输入传感器的数值, 直接进行 线形跟随处理, 或进行对数处理。 对光线亮度变化较大的区域, 会引起亮度 不断调整, 从而导致电流消耗过大。
本发明提供一种屏幕亮度的控制方法及装置, 用于解决现有技术中屏幕 亮度随外界环境变化时, 对光线亮度变化较大的区域, 会引起亮度不断调整, 从而导致电流消耗过大的问题。
为了解决上述问题, 本发明提供一种屏幕亮度的控制方法, 包括: 光传感器获取外界环境的亮度信号强度值并传给比较器;
比较器将接收到的亮度信号强度值与保存的亮度信号强度值进行比较, 并向积分器输出比较结果;
如果所述比较结果为接收到的亮度信号强度值比保存的亮度信号强度值 高, 积分器则根据该比较结果将保存的亮度信号强度值增加固定值; 以及 如果所述比较结果为接收到的亮度信号强度值比保存的亮度信号强度值 低, 积分器则根据该比较结果将保存的亮度信号强度值降低固定值;
其中, 所述保存的亮度信号强度值用于控制当前屏幕亮度的电流幅度。 优选地, 在所述比较器向积分器输出比较结果的步骤之前, 所述方法还 包括:
将所述比较结果发送到连码检测器, 如果该连码检测器检测到至少连续 两次的比较结果为接收到的亮度信号强度值比保存的亮度信号强度值高, 则 将所述固定值增大; 如果至少连续两次的比较结果为接收到的亮度信号强度 值比保存的亮度信号强度值低, 则将所述固定值减小。
优选地, 在将保存的亮度信号强度值增加固定值或将保存的亮度信号强 度值降低固定值的步骤之后, 所述方法还包括:
将增加固定值后的亮度信号强度值与预设的上限值进行比较, 如果增加 固定值后的亮度信号强度值大于该上限值, 则将该上限值作为当前的亮度信 号强度值发送至比较器保存, 并用于控制当前屏幕亮度的电流幅度;
将降低固定值后的亮度信号强度值与预设的下限值进行比较, 如果降低 固定值后的亮度信号强度值小于该下限值, 则将该下限值作为当前的亮度信 号强度值发送至比较器保存, 并用于控制当前屏幕亮度的电流幅度。
根据上述方法, 本发明还提供一种屏幕亮度的控制装置, 包括光传感器、 比较器和积分器:
所述光传感器设置为, 获取外界环境的亮度信号强度值并传给比较器; 所述比较器设置为, 将接收到的亮度信号强度值与保存的亮度信号强度 值进行比较, 得到比较结果;
所述积分器设置为, 接收所述比较结果, 如果所述比较结果为接收到的 亮度信号强度值比保存的亮度信号强度值高, 则将保存的亮度信号强度值增 加固定值; 如果所述比较结果为接收到的亮度信号强度值比保存的亮度信号 强度值低, 则将保存的亮度信号强度值降低固定值; 所述保存的亮度信号强
度值用于控制当前屏幕亮度的电流幅度。
优选地, 该装置还包括连码检测器和幅度调整器, 其中:
所述连码检测器设置为, 接收所述比较器输出的比较结果, 并对该比较 结果进行连码检测, 并将连码检测结果发送至所述幅度调整器;
所述幅度调整器设置为,根据所述连码检测结果对所述固定值进行调整, 并将调整后的固定值发送到所述积分器。
优选地, 所述幅度调整器是设置为, 如果至少连续两次的比较结果为接 收到的亮度信号强度值比保存的亮度信号强度值高, 则将所述固定值增大; 如果至少连续两次的比较结果为接收到的亮度信号强度值比保存的亮度信号 强度值低, 则将所述固定值减小。
优选地, 该装置还包括限幅控制器,
所述限幅控制器设置为, 将积分器输出的增加固定值后的亮度信号强度 值与预设的上限值进行比较, 如果所述积分器输出的增加固定值后的亮度信 号强度值大于该上限值, 则用该上限值控制当前屏幕亮度的电流幅度, 并将 该上限值作为当前的亮度信号强度值发送至比较器保存; 将降低固定值后的 亮度信号强度值与预设的下限值进行比较, 如果所述降低固定值后的亮度信 号强度值小于该下限值, 则用该下限值控制当前屏幕亮度的电流幅度, 并将 该下限值作为当前的亮度信号强度值发送至比较器保存。
在光亮度波动较大的区域, 应用本发明实施提供的方法和装置, 使得液 晶屏幕在周围亮度不稳定的情况下, 可以提供相对稳定的屏幕亮度, 减少使 用者的视觉疲劳。 附图概述
图 1为本发明实施例一种屏幕亮度控制的方法的流程图;
图 2为本发明实施例一种屏幕亮度控制的方法亮度控制示意图;
图 3为本发明实施例一种屏幕亮度控制的装置的结构图。
本发明的较佳实施方式
本发明实施例提供一种屏幕亮度控制的方法, 该方法包括: 光传感器获 取外界环境的亮度信号强度值并传给比较器; 比较器将接收到的亮度信号强 度值与保存的亮度信号强度值进行比较, 并输出比较结果; 如果所述比较结 果为接收到的亮度信号强度值比保存的亮度信号强度值高, 积分器则根据该 比较结果将保存的亮度信号强度值增加固定值; 如果所述比较结果为接收到 的亮度信号强度值比保存的亮度信号强度值低, 积分器则根据该比较结果将 保存的亮度信号强度值降低固定值, 其中, 所述保存的亮度信号强度值用于 控制当前屏幕亮度电流的幅度。
下面结合说明书附图对本发明的具体实施方式进行详细说明。
如图 1所示, 本发明实施例一种屏幕亮度控制的方法, 具体包括: 步骤 101、 光传感器将周围的亮度信号强度传给比较器。
步骤 102、 比较器将光传感器发送来的亮度信号强度值与自身保存的亮 度信号强度值进行比较, 得到比较结果;
步骤 103、 利用所述比较结果调整保存的亮度信号强度值; 其中, 如果 所述比较结果为接收到的亮度信号强度值比保存的亮度信号强度值高, 则向 积分器发送控制信息将保存的亮度信号强度值增加固定值, 所述保存的亮度 信号强度值还用于控制当前屏幕亮度电流的幅度;
如果所述比较结果为接收到的亮度信号强度值比保存的亮度信号强度值 低, 向积分器发送控制信息将保存的亮度信号强度值降低固定值。
其中, 所述固定值可以根据实际应用自行设定, 如果所述固定值设定为
1 , 当所述比较结果为接收到的亮度信号强度值比保存的亮度信号强度值高 时, 则将自身保存的控制屏幕电流幅度的亮度信号强度值加 1 ; 反之则减 1。
另外, 为了使得电流的调整不落后于外界环境亮度的变化, 在本发明实 施例中, 比较器向积分器发送控制信息之前, 进一步还包括:
步骤 102A、 将所述比较结果发送到连码检测器, 如果至少连续两次的比 较结果都是接收到的亮度信号强度值比保存的亮度信号强度值高, 则将所述 固定值增大; 如果至少连续两次的比较结果都是接收到的亮度信号强度值比 保存的亮度信号强度值低, 则将所述固定值增大减小。
为了防止控制屏幕亮度的电流过高或过低, 本发明实施例在将保存的亮 度信号强度值增加固定值或将保存的亮度信号强度值降低固定值之前, 进一 步包括:
步骤 104、 将增加固定值后的亮度信号强度值与预设的上限值进行比较, 如果大于该上限值, 则将该上限值作为当前的亮度信号强度值保存, 并用于 控制当前屏幕亮度电流的幅度; 将降低固定值后的亮度信号强度值与预设的 下限值进行比较, 如果小于该下限值, 则将该下限值作为当前的亮度信号强 度值保存, 并用于控制当前屏幕亮度电流的幅度。
在本发明实施例中, 将接收到的亮度信号强度值比保存的亮度信号强度 值高的比较结果, 定义为高电平有效, 即定义为比较器输出 1 , 接收到的亮 度信号强度值比保存的亮度信号强度值低, 定义为低电平有效, 即定义为比 较器输出 0。
外部信号有了很大的提高, 增加幅度, 即改变所述固定值的大小, 可以 使改变屏幕亮度的估计值迅速跟踪上外部的变化,即如果比较器连续输出(有 2个以上相同的输出就认为连续输出)数字 "1"或 "0"如 "11...1"或 "00..0" , 表明周围信号有了比较大的变化, 具体实现方式是:
连码检测器 (检测到是否有连续输出相同的信号)检测是否有连续输出 1或者 0, 如果有, 则输出控制信号来调整所述固定值, 如当有 2个连续 "1" 出现的时候, 连码检测器启动, 控制幅度调制器调整输出幅度(即调整固定 值的大小) , 如将固定值的大小增加 1倍。
控制幅度调制器收到连码检测器输出的控制信号后,将控制调制幅度(是 调制幅度信号的)增加; 同时将控制信息发给积分器。
因为信号的输出是周期的, 输入输出信号之间存在一定的间隔, 间隔内 的信号是不变化的, 即非连续的, 所以存在当前信号和上一个周期信号比较, 产生对当前信号的估计值 (即将保存亮度信号强度值增加或是降低固定值后 的输出结果) , 该估计值同时发给比较器, 作为比较信号; 也可以作为控制 屏幕亮度电流的幅度控制信号输出。
该实施例中的控制幅度调制器即为幅度调整器。
图 2环境中光强度变化的模拟图, 横轴为时间, 单位是釆样周期, 竖轴 为幅度(输入的光亮度、 输出的控制电流的信号幅度) , 为了避免控制屏幕 亮度的电流过大或过低, 在本发明实施例中将电流的幅度控制最大为 7 , 最 小为 2, 另外, 所述预先设定的每次增加的幅度为 1 (即所述固定值为 1 ) : A.在时间 0~3时间段, 输入光亮度从 2到 8, 再到 2。 此亮度信号意味着 周围环境波动较大, 在现有技术中, 则直接根据该光亮度对控制屏幕亮度的 电流进行调整, 而本发明实施例中, 则经过控制装置, 在进行比较后在原有 电流的基础上增加一个固定值, 使得该不稳定信号变为小幅波动信号, 减少 了电流的不必要浪费。
B.在时间 3~7时间段, 输入的亮度从 2到 7 , 在控制装置第一阶段, 输出 幅度增加只有 1 (初始值) , 但由于在第二阶段外部环境的光亮度变化较大, 输出无法及时反应输入的变化, 在连码检测器检测到连续输出控制信号 1的 情况下, 幅度调制将调整幅度增加值变为 2, 从而及时反应输入信号的变化。
C.在时间 7~10时间段,输入亮度从 4变到 10,输出信号在及时跟踪外部 信号的变化的情况下, 受控于幅度控制信号, 将最大输出控制为 7 , 保证了 屏幕亮度在可接受的范围之内, 同时减少了不必要的能耗。
D.在时间 10~14时间段, 输入亮度从 10变到 1 , 受控于幅度控制信号, 将最低输出控制为 2, 在环境比较暗的条件下, 也可以保证一定的亮度。
如图 3所示, 根据上述方法, 本发明实施例还提供一种屏幕亮度控制的 装置, 具体包括光传感器 301、 比较器 302和积分器 303:
光传感器 301设置为, 获取外界环境的亮度信号强度值并传给比较器; 比较器 302设置为, 将接收到的亮度信号强度值与保存的亮度信号强度 值进行比较, 并输出比较结果;
积分器 303设置为, 接收所述比较结果, 如果所述比较结果为接收到的 亮度信号强度值比保存的亮度信号强度值高, 则将保存的亮度信号强度值增 加固定值; 如果所述比较结果为接收到的亮度信号强度值比保存的亮度信号 强度值低, 则将保存的亮度信号强度值降低固定值。
其中, 所述保存的亮度信号强度值用于控制当前屏幕亮度电流的幅度。
另外, 为了使得电流的调整不落后于外界环境亮度的变化, 本发明实施 例还包括连码检测器 304和幅度调整器 305:
连码检测器 304设置为, 接收比较器的输出的比较结果, 并对该比较结 果进行连码检测, 并将连码检测结果发送至幅度调整器 305;
幅度调整器 305设置为,根据所述连码检测结果对所述固定值进行调整, 其中, 如果所述连码检测结果为至少连续两次的比较结果为接收到的亮度信 号强度值比保存的亮度信号强度值高, 则将所述固定值增大; 如果至少连续 两次的比较结果为接收到的亮度信号强度值比保存的亮度信号强度值低, 则 将所述固定值增大减小; 并将修改后的固定值发送到积分器 303。
进一步, 为了防止控制屏幕亮度的电流过高或过低, 本发明实施例还包 括:
限幅控制器 306设置为, 将增加固定值后的亮度信号强度值与预设的上 限值进行比较, 如果大于该上限值, 则用该上限值控制当前屏幕亮度电流的 幅度, 并将该上限值作为当前的亮度信号强度值发送至比较器保存; 将降低 固定值后的亮度信号强度值与预设的下限值进行比较, 如果小于该下限值, 则用该下限值控制当前屏幕亮度电流的幅度, 并将该下限值作为当前的亮度 信号强度值发送至比较器保存。
应用本发明实施例提供的方法和装置, 使得液晶屏幕在周围亮度不稳定 的情况下, 可以提供相对稳定的屏幕亮度, 减少使用者的视觉疲劳, 同时也 能防止屏幕电流的大幅波动, 从而减少电流消耗; 同时在环境亮度变化的情 况下, 保持屏幕亮度与周围环境的协调。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成, 所述程序可以存储于计算机可读存储介质中, 如只读 存储器、 磁盘或光盘等。 可选地, 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地, 上述实施例中的各模块 /单元可以釆用 硬件的形式实现, 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。
人员根据本发明的技术方案得出其它的实施方式, 同样属于本发明的技术创 新范围。 显然, 本领域的技术人员可以对本发明进行各种改动和变型而不脱 离本发明的精神和范围。 这样, 倘若本发明的这些修改和变型属于本发明权 利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。
工业实用性
本发明提供的屏幕亮度的控制装置及方法, 使得液晶屏幕在周围亮度不 稳定的情况下, 可以提供相对稳定的屏幕亮度, 减少使用者的视觉疲劳, 同 时也能防止屏幕电流的大幅波动, 从而减少电流消耗; 同时在环境亮度发生 变化的情况下, 保持屏幕亮度与周围环境的协调。
Claims
1、 一种屏幕亮度的控制装置, 包括光传感器、 比较器和积分器, 所述光传感器设置为, 获取外界环境的亮度信号强度值并传给比较器; 所述比较器设置为, 将接收到的亮度信号强度值与保存的亮度信号强度 值进行比较, 得到比较结果;
所述积分器设置为, 接收所述比较结果, 如果所述比较结果为接收到的 亮度信号强度值比保存的亮度信号强度值高, 则将保存的亮度信号强度值增 加固定值; 如果所述比较结果为接收到的亮度信号强度值比保存的亮度信号 强度值低, 则将保存的亮度信号强度值降低固定值; 所述保存的亮度信号强 度值用于控制当前屏幕亮度的电流幅度。
2、 如权利要求 1所述的装置, 该装置还包括连码检测器和幅度调整器, 其中:
所述连码检测器设置为, 接收所述比较器输出的比较结果, 并对该比较 结果进行连码检测, 并将连码检测结果发送至所述幅度调整器;
所述幅度调整器设置为,根据所述连码检测结果对所述固定值进行调整, 并将调整后的固定值发送到所述积分器。
3、 如权利要求 2所述的装置, 其中, 所述幅度调整器是设置为, 如果至 少连续两次的比较结果为接收到的亮度信号强度值比保存的亮度信号强度值 高, 则将所述固定值增大; 如果至少连续两次的比较结果为接收到的亮度信 号强度值比保存的亮度信号强度值低, 则将所述固定值减小。
4、 如权利要求 1所述的装置, 该装置还包括限幅控制器,
所述限幅控制器设置为, 将积分器输出的增加固定值后的亮度信号强度 值与预设的上限值进行比较, 如果所述积分器输出的增加固定值后的亮度信 号强度值大于该上限值, 则用该上限值控制当前屏幕亮度的电流幅度, 并将 该上限值作为当前的亮度信号强度值发送至比较器保存; 将降低固定值后的 亮度信号强度值与预设的下限值进行比较, 如果所述降低固定值后的亮度信 号强度值小于该下限值, 则用该下限值控制当前屏幕亮度的电流幅度, 并将 该下限值作为当前的亮度信号强度值发送至比较器保存。
5、 一种屏幕亮度的控制方法, 包括:
光传感器获取外界环境的亮度信号强度值并传给比较器;
比较器将接收到的亮度信号强度值与保存的亮度信号强度值进行比较, 并向积分器输出比较结果;
如果所述比较结果为接收到的亮度信号强度值比保存的亮度信号强度值 高, 积分器则根据该比较结果将保存的亮度信号强度值增加固定值; 以及 如果所述比较结果为接收到的亮度信号强度值比保存的亮度信号强度值 低, 积分器则根据该比较结果将保存的亮度信号强度值降低固定值;
其中, 所述保存的亮度信号强度值用于控制当前屏幕亮度的电流幅度。
6、 如权利要求 5所述的方法, 其中, 在所述比较器向积分器输出比较结 果的步骤之前, 所述方法还包括:
将所述比较结果发送到连码检测器, 如果该连码检测器检测到至少连续 两次的比较结果为接收到的亮度信号强度值比保存的亮度信号强度值高, 则 将所述固定值增大; 如果至少连续两次的比较结果为接收到的亮度信号强度 值比保存的亮度信号强度值低, 则将所述固定值减小。
7、 如权利要求 5或 6所述的方法, 其中, 在将保存的亮度信号强度值增 加固定值或将保存的亮度信号强度值降低固定值的步骤之后, 所述方法还包 括:
将增加固定值后的亮度信号强度值与预设的上限值进行比较, 如果增加 固定值后的亮度信号强度值大于该上限值, 则将该上限值作为当前的亮度信 号强度值发送至比较器保存, 并用于控制当前屏幕亮度的电流幅度; 以及 将降低固定值后的亮度信号强度值与预设的下限值进行比较, 如果降低 固定值后的亮度信号强度值小于该下限值, 则将该下限值作为当前的亮度信 号强度值发送至比较器保存, 并用于控制当前屏幕亮度的电流幅度。
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CN102737613A (zh) * | 2012-07-05 | 2012-10-17 | 无锡艾柯威科技有限公司 | 一种亮度渐变显示电路 |
US10607520B2 (en) | 2015-05-14 | 2020-03-31 | Manufacturing Resources International, Inc. | Method for environmental adaptation of display characteristics based on location |
US10321549B2 (en) | 2015-05-14 | 2019-06-11 | Manufacturing Resources International, Inc. | Display brightness control based on location data |
WO2016183576A1 (en) * | 2015-05-14 | 2016-11-17 | Manufacturing Resources International, Inc. | Display brightness control based on location data |
US10593255B2 (en) | 2015-05-14 | 2020-03-17 | Manufacturing Resources International, Inc. | Electronic display with environmental adaptation of display characteristics based on location |
WO2016191611A1 (en) | 2015-05-26 | 2016-12-01 | Lutron Electronics Co., Inc. | Control device having an integral reflecting structure for a sensing circuit |
CN105355188B (zh) * | 2015-11-23 | 2018-09-11 | 广东欧珀移动通信有限公司 | 移动终端的屏幕亮度调整方法、***及移动终端 |
CN105405429B (zh) * | 2015-12-11 | 2019-03-26 | Tcl移动通信科技(宁波)有限公司 | 一种移动终端及其环境光动态感应控制方法、*** |
WO2018009917A1 (en) | 2016-07-08 | 2018-01-11 | Manufacturing Resources International, Inc. | Controlling display brightness based on image capture device data |
CN106357918A (zh) * | 2016-09-30 | 2017-01-25 | 维沃移动通信有限公司 | 一种调节屏幕亮度的方法及移动终端 |
CN108269524A (zh) * | 2017-01-03 | 2018-07-10 | 昆山国显光电有限公司 | 一种调节amoled显示屏亮度的方法及*** |
CN107665678B (zh) * | 2017-09-19 | 2019-09-17 | 惠科股份有限公司 | 液晶显示器及其驱动方法 |
US10080051B1 (en) * | 2017-10-25 | 2018-09-18 | TCL Research America Inc. | Method and system for immersive information presentation |
US10578658B2 (en) | 2018-05-07 | 2020-03-03 | Manufacturing Resources International, Inc. | System and method for measuring power consumption of an electronic display assembly |
US10782276B2 (en) | 2018-06-14 | 2020-09-22 | Manufacturing Resources International, Inc. | System and method for detecting gas recirculation or airway occlusion |
CN109167946B (zh) * | 2018-09-30 | 2021-02-19 | Oppo广东移动通信有限公司 | 视频处理方法、装置、电子设备以及存储介质 |
CN109584823A (zh) * | 2018-12-20 | 2019-04-05 | 深圳市视安通电子有限公司 | 一种液晶显示屏色偏补充校正技术 |
US11526044B2 (en) | 2020-03-27 | 2022-12-13 | Manufacturing Resources International, Inc. | Display unit with orientation based operation |
WO2022197617A1 (en) | 2021-03-15 | 2022-09-22 | Manufacturing Resources International, Inc. | Fan control for electronic display assemblies |
US12027132B1 (en) | 2023-06-27 | 2024-07-02 | Manufacturing Resources International, Inc. | Display units with automated power governing |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1838751A (zh) * | 2005-03-23 | 2006-09-27 | 乐金电子(沈阳)有限公司 | 图像显示设备的亮度控制装置及方法 |
CN101290762A (zh) * | 2007-04-16 | 2008-10-22 | 明基电通股份有限公司 | 显示装置及其亮度校正方法 |
Family Cites Families (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0570037A1 (en) * | 1992-05-15 | 1993-11-18 | General Motors Corporation | Head-up display system |
JP2752309B2 (ja) * | 1993-01-19 | 1998-05-18 | 松下電器産業株式会社 | 表示装置 |
US5617112A (en) | 1993-12-28 | 1997-04-01 | Nec Corporation | Display control device for controlling brightness of a display installed in a vehicular cabin |
US6094185A (en) * | 1995-07-05 | 2000-07-25 | Sun Microsystems, Inc. | Apparatus and method for automatically adjusting computer display parameters in response to ambient light and user preferences |
US5760760A (en) * | 1995-07-17 | 1998-06-02 | Dell Usa, L.P. | Intelligent LCD brightness control system |
US6411306B1 (en) * | 1997-11-14 | 2002-06-25 | Eastman Kodak Company | Automatic luminance and contrast adustment for display device |
US20020109664A1 (en) * | 1999-02-19 | 2002-08-15 | Masaki Shimada | Display apparatus and an image processing apparatus |
JP2001142446A (ja) * | 1999-08-31 | 2001-05-25 | Matsushita Electric Ind Co Ltd | 表示制御方法および表示制御装置 |
US6618045B1 (en) * | 2000-02-04 | 2003-09-09 | Microsoft Corporation | Display device with self-adjusting control parameters |
US7928955B1 (en) * | 2000-03-13 | 2011-04-19 | Intel Corporation | Automatic brightness control for displays |
US6762741B2 (en) * | 2000-12-22 | 2004-07-13 | Visteon Global Technologies, Inc. | Automatic brightness control system and method for a display device using a logarithmic sensor |
US6865405B2 (en) * | 2001-07-26 | 2005-03-08 | Inventec Appliances Corp. | Method for automatically adjusting the background brightness of cellular phone display |
US6947017B1 (en) * | 2001-08-29 | 2005-09-20 | Palm, Inc. | Dynamic brightness range for portable computer displays based on ambient conditions |
US6713745B2 (en) * | 2002-06-28 | 2004-03-30 | Kinpo Electronics, Inc. | Display device with feedback brightness sensing |
US7236154B1 (en) * | 2002-12-24 | 2007-06-26 | Apple Inc. | Computer light adjustment |
US7095392B2 (en) * | 2003-02-07 | 2006-08-22 | 02Micro International Limited | Inverter controller with automatic brightness adjustment circuitry |
TW200520549A (en) * | 2003-12-02 | 2005-06-16 | Quanta Comp Inc | Display device featuring automatic adjustment of display setting function in response to surrounding brightness |
KR100833951B1 (ko) * | 2003-12-13 | 2008-05-30 | 삼성전자주식회사 | 디스플레이장치 및 그 제어방법 |
US7468722B2 (en) * | 2004-02-09 | 2008-12-23 | Microsemi Corporation | Method and apparatus to control display brightness with ambient light correction |
US20060022934A1 (en) * | 2004-07-30 | 2006-02-02 | Microsoft Corporation | Methods and apparatus for implementing transmissive display devices |
US20060284824A1 (en) * | 2005-06-20 | 2006-12-21 | Yu-Kuang Yeh | Luminance auto-adjustment for displays |
KR100624136B1 (ko) * | 2005-08-22 | 2006-09-13 | 삼성에스디아이 주식회사 | 자동밝기 조절장치를 포함하는 유기 전계발광 표시장치 |
ATE381848T1 (de) * | 2005-10-31 | 2008-01-15 | Research In Motion Ltd | Automatische hintergrundlichteinstellung der tastatur und bildschirm eines tragbaren elektronischen gerätes |
JP2007279093A (ja) * | 2006-04-03 | 2007-10-25 | Epson Imaging Devices Corp | 液晶表示装置 |
KR100830297B1 (ko) * | 2006-09-26 | 2008-05-19 | 삼성에스디아이 주식회사 | 유기전계발광표시장치 및 그의 구동방법 |
TWI335467B (en) * | 2006-09-29 | 2011-01-01 | Chimei Innolux Corp | Liquid crystal display device |
JP2008181109A (ja) * | 2006-12-27 | 2008-08-07 | Semiconductor Energy Lab Co Ltd | 液晶表示装置及びそれを用いた電子機器 |
US8068125B2 (en) * | 2007-01-05 | 2011-11-29 | Apple Inc. | Luminescence shock avoidance in display devices |
US8698727B2 (en) * | 2007-01-05 | 2014-04-15 | Apple Inc. | Backlight and ambient light sensor system |
KR100836438B1 (ko) * | 2007-02-05 | 2008-06-09 | 삼성에스디아이 주식회사 | 유기 전계 발광표시장치 및 그 구동방법 |
CN101675375B (zh) * | 2007-07-13 | 2011-08-17 | 夏普株式会社 | 液晶显示装置和其驱动方法 |
KR101479984B1 (ko) * | 2007-12-27 | 2015-01-13 | 삼성디스플레이 주식회사 | 조도 감지 장치 및 이를 포함하는 표시 장치 |
TWI397053B (zh) * | 2008-03-14 | 2013-05-21 | Innolux Corp | 液晶顯示器亮度自動調整裝置及其亮度自動調整方法 |
CN101383139B (zh) * | 2008-06-27 | 2011-01-12 | 青岛海信电器股份有限公司 | 显示屏亮度控制方法 |
CN101673514A (zh) * | 2008-09-09 | 2010-03-17 | 深圳富泰宏精密工业有限公司 | 屏幕亮度调节装置及调节方法 |
US8514242B2 (en) * | 2008-10-24 | 2013-08-20 | Microsoft Corporation | Enhanced user interface elements in ambient light |
US20100141571A1 (en) * | 2008-12-09 | 2010-06-10 | Tony Chiang | Image Sensor with Integrated Light Meter for Controlling Display Brightness |
JP5304211B2 (ja) * | 2008-12-11 | 2013-10-02 | ソニー株式会社 | 表示装置、輝度調整装置、バックライト装置、輝度調整方法及びプログラム |
JP5321032B2 (ja) * | 2008-12-11 | 2013-10-23 | ソニー株式会社 | 表示装置、輝度調整装置、輝度調整方法及びプログラム |
US8411020B2 (en) * | 2009-01-14 | 2013-04-02 | Unitech Electronics Co., Ltd. | Hysteresis-type controlling method for backlight of portable electronic device |
-
2009
- 2009-09-28 CN CN200910176074XA patent/CN102035919B/zh active Active
-
2010
- 2010-07-20 WO PCT/CN2010/075311 patent/WO2011035641A1/zh active Application Filing
- 2010-07-20 US US13/395,483 patent/US8797372B2/en active Active
- 2010-07-20 EP EP10818335.1A patent/EP2466879B1/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1838751A (zh) * | 2005-03-23 | 2006-09-27 | 乐金电子(沈阳)有限公司 | 图像显示设备的亮度控制装置及方法 |
CN101290762A (zh) * | 2007-04-16 | 2008-10-22 | 明基电通股份有限公司 | 显示装置及其亮度校正方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2466879A4 * |
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US8797372B2 (en) | 2014-08-05 |
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