JP6722653B2 - Display brightness adjusting method and apparatus - Google Patents

Description

The present disclosure relates to the field of image processing technology, and more particularly to a method and apparatus for adjusting display brightness.

In everyday life, many people have a habit of using smart devices such as mobile phones before they fall asleep. At this time, turning on the light not only wastes power but also affects people. Without lighting, most people reduce the brightness of cell phones in very low brightness environments (eg, 0.001lux at night). However, since brightness is currently constrained by LCD backlight circuitry, structure, control mode and cost, in such extremely dark environments (eg, night, 0.001 lux), when using a mart device, the eyes may not be able to see it. Causes great damage.

The present disclosure provides a method and apparatus for adjusting display brightness.

According to a first aspect of the embodiment of the present invention, obtaining an original grayscale value of a pixel in a display interface, and performing a grayscale conversion on the pixel to obtain a converted grayscale value of the pixel. And a step of adjusting a grayscale value of the display interface based on the converted grayscale value of the pixel.

Preferably, the step of grayscale converting the pixel to obtain the converted grayscale value of the pixel is grayscale converted, the converted grayscale value corresponding to the original grayscale value of the pixel. Or a substep of inquiring a converted grayscale value corresponding to the original grayscale value of the pixel from the correspondence data, the substep of obtaining the correspondence data including a value, or The step of obtaining a transformed grayscale value of the pixel by grayscale conversion by means of a substep of obtaining a transformation function of the grayscale transformation, based on the transformation function and the original grayscale value of the pixel, Calculating a converted grayscale value for each pixel.

Preferably, the step of performing grayscale conversion on the pixel to obtain the converted grayscale value of the pixel includes a substep of detecting a current ambient brightness, and a grayscale conversion based on the current ambient brightness. A substep of selecting correspondence data or a transformation function for the conversion, and a substep of inquiring a converted grayscale value corresponding to the original grayscale value of the pixel based on the selected correspondence data , Or calculating a transformed grayscale value corresponding to the original grayscale value of the pixel based on the selected transformation function.

Preferably, the step of grayscale converting the pixel to obtain the converted grayscale value of the pixel includes a substep of obtaining a display digit number of the original grayscale value, and the original grayscale. Corresponding to the original grayscale value of the pixel based on the number of displayed digits of the value, a substep of selecting correspondence data or a conversion function for grayscale conversion, and based on the selected correspondence data. Substep of querying the transformed grayscale value or calculating a transformed grayscale value corresponding to the original grayscale value of the pixel based on the selected transformation function.

Preferably, the step of performing grayscale conversion on the pixel to obtain the converted grayscale value of the pixel includes a sub-step of detecting a current environmental brightness value, and the current environmental brightness value is a set brightness value. And sub-steps of gray scale converting the pixel to obtain a converted gray scale value of the pixel if:

Preferably, the method includes a step of detecting an environmental brightness value, a step of adjusting the display brightness value of the screen based on the environmental brightness value, and a relationship between the adjusted current brightness value and the set brightness value of the screen. If it is determined that the current brightness value is lower than the first set brightness value, the step of adjusting the first type gray scale value and the current brightness value is determined to be higher than the second set brightness value. If so, adjusting the second type of gray scale value is further included.

Preferably, before the step of obtaining the original grayscale value of the pixel in the display interface, the method detects the brightness value of the pixel in the display interface, and the brightness value of the pixel in the detected display interface is A step of determining whether or not the set brightness value is exceeded, a step of specifying location information of a pixel that exceeds the set brightness value, and a position of which is specified when it is determined that the set brightness value is exceeded. Adjusting the grayscale value of the selected pixel.

Preferably, the method further comprises the steps of obtaining a color space value displayed on the screen, and adjusting a gray scale value of each pixel in the display interface based on the obtained color space value. Including.

Preferably, the method is a step of establishing a correspondence relationship between a plurality of groups of input grayscale values and output grayscale values according to each pixel, wherein the correspondence relationship is the input grayscale value and the The value of the ratio of the output grayscale value changes non-linearly or linearly according to the magnitude of the grayscale value, and the value of the ratio of the input grayscale value and the output grayscale value is 1 or more. And the step of adjusting the output brightness value of the pixel in the display interface of the screen based on the value of the ratio when the screen brightness value is higher than the set brightness value.

According to a second aspect of the present disclosure, an acquisition module configured to acquire an original grayscale value of a pixel in a display interface, and a grayscale conversion for each pixel to convert the converted grayscale value of the pixel. A display brightness adjustment device comprising: a conversion module configured to obtain a display module and an adjustment module configured to adjust a grayscale value of the display interface based on the converted grayscale value of the pixel. Provided.

Preferably, the conversion module is a grayscale-converted acquisition sub-module configured to acquire the correspondence data including the converted grayscale value corresponding to the original grayscale value of the pixel; And a query sub-module configured to query a transformed grayscale value corresponding to the original grayscale value of the pixel from the correspondence data, or configured to obtain a transform function of the grayscale transform. And a computing sub-module configured to compute a transformed grayscale value for each pixel based on the transformation function and the original grayscale value of the pixel.

Preferably, the conversion module further comprises a first detection sub-module configured to detect a current ambient brightness value, and correspondence data or a transform for gray scale conversion based on the current ambient brightness. A selecting sub-module configured to select a function, the query sub-module generating a transformed grayscale value corresponding to the original grayscale value of the pixel based on the selected correspondence data. Or the computing sub-module is configured to compute a transformed grayscale value corresponding to the original grayscale value of the pixel based on the transformation function selected. ing.

Preferably, the conversion module further comprises an acquisition sub-module configured to acquire the display digits of the original grayscale value, and a grayscale conversion based on the display digits of the original grayscale value. A selection sub-module configured to select correspondence data or a transformation function for, the query sub-module based on the selected correspondence data, the original grayscale value of the pixel. Is configured to query the transformed grayscale value corresponding to, or the computing sub-module is transformed based on the transformation function selected to correspond to the original grayscale value of the pixel. Configured to calculate a grayscale value.

Preferably, the conversion module is a detection sub-module configured to detect a current ambient brightness value, and performs a grayscale conversion on the pixel when the current ambient brightness value is less than or equal to a set brightness value. And a transform sub-module configured to obtain a transformed grayscale value of the pixel.

Desirably, the device is a first detection module configured to detect an ambient brightness value, and a second adjustment module configured to adjust a display brightness value of the screen based on the ambient brightness value. Further comprising a first determination module configured to determine a relationship between the adjusted screen current brightness value and the set brightness value, wherein the first adjustment module has the current brightness value set to the first set brightness value. If it is determined to be lower, the first type of gray scale value is adjusted, and if it is determined that the current luminance value is higher than the second set luminance value, the second type of gray scale value is adjusted. ing.

Desirably, the device comprises a second detection module configured to detect a luminance value of a pixel in the display interface prior to obtaining the original grayscale value of the pixel in the display interface, and the detected display interface. A second determination module configured to determine whether or not the brightness value of the pixel in exceeds the set brightness value, and if it is determined that the brightness value of the pixel exceeds the set brightness value, Further comprising an identification module configured to identify location information, wherein the first adjustment module is configured to adjust a grayscale value of the location-identified pixel.

Desirably, the device further comprises a second acquisition module configured to acquire the value of the color space displayed on the screen, wherein the first adjustment module is based on the acquired value of the color space. , Is adapted to adjust the grayscale value of each pixel in the display interface.

Preferably, the device is an establishment module configured to establish a correspondence relationship between a plurality of groups of input grayscale values and output grayscale values according to each pixel, and the correspondence relationship is the The value of the ratio of the input grayscale value and the output grayscale value is to change non-linearly or linearly according to the magnitude of the grayscale value, between the input grayscale value and the output grayscale value. The first adjusting module may further include an establishment module having a ratio value of 1 or more, wherein the first adjusting module is configured to display the screen in the display interface of the screen based on the ratio value when the screen brightness value is higher than the set brightness value. It is configured to adjust the output brightness value of the pixel.

According to a third aspect of the present disclosure, a processor and a memory configured to store instructions executable by the processor, the processor storing the original grayscale value of each pixel at a display interface. Obtaining, performing grayscale conversion on the pixel to obtain the converted grayscale value of the pixel, and adjusting the grayscale value of the display interface based on the converted grayscale value of the pixel. There is provided a display brightness adjusting device configured as described above.

The technical solution according to the embodiment of the present disclosure has the following beneficial effects.

In an environment where the brightness is extremely low, the display system outputs an extremely low brightness to reduce damage to the eyes, and is applied to a low brightness environment where there is no lighting device. Furthermore, it is valid for the entire display content, not for an application. In this way, it is not necessary to develop a corresponding night mode for each application separately, but the size of the resource file can be reduced to save the storage space, and the operation is simple and the user experience is good.

It should be understood that both the foregoing general description and the detailed description that follows are for purposes of illustration only and are not limiting of the present invention.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention and, together with the detailed description, serve to explain the principles of the invention.

6 is a flowchart showing a display brightness adjusting method according to one embodiment. 9 is a flowchart showing a display brightness adjusting method according to another embodiment. 9 is a flowchart showing a display brightness adjusting method according to another embodiment. 9 is a flowchart showing a display brightness adjusting method according to another embodiment. 9 is a flowchart showing a display brightness adjusting method according to another embodiment. 9 is a flowchart showing a display brightness adjusting method according to another embodiment. It is a schematic diagram which shows the original display interface which concerns on another embodiment. It is a schematic diagram which shows the converted display interface which concerns on another embodiment. It is a schematic diagram which shows the gray scale conversion curve which concerns on another embodiment. 9 is a flowchart showing a display brightness adjusting method according to another embodiment. 9 is a flowchart showing a display brightness adjusting method according to another embodiment. 9 is a flowchart showing a display brightness adjusting method according to another embodiment. 9 is a flowchart showing a display brightness adjusting method according to another embodiment. It is a block diagram which shows the display brightness adjusting device which concerns on one Embodiment. It is a block diagram which shows the conversion module which concerns on one Embodiment. It is a block diagram which shows the conversion module which concerns on another embodiment. It is a block diagram which shows the conversion module which concerns on another embodiment. It is a block diagram which shows the conversion module which concerns on another embodiment. It is a block diagram which shows the conversion module which concerns on another embodiment. It is a block diagram which shows the display brightness adjusting device which concerns on another embodiment. It is a block diagram which shows the display brightness adjusting device which concerns on another embodiment. It is a block diagram which shows the display brightness adjusting device which concerns on another embodiment. It is a block diagram which shows the display brightness adjusting device which concerns on another embodiment. FIG. 6 is a block diagram illustrating an apparatus for adjusting display brightness according to one embodiment.

Examples of the present invention will be described in detail below. Although examples of the above embodiments are shown in the drawings, the same reference numerals in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following description of the illustrative examples do not represent all embodiments consistent with the invention. On the contrary, they are merely exemplary of devices and methods consistent with aspects related to the invention as set forth in the appended claims.

In the embodiment of the present disclosure, when the brightness is low, the effect of changing the grayscale value of the display interface not only damages the eyes but also does not affect the gradation of the image.

FIG. 1 is a flowchart showing a method of adjusting display brightness according to one embodiment. As shown in FIG. 1, the display brightness adjusting method is used in a terminal and includes the following steps.

In step S11, the original grayscale value of the pixel at the display interface is obtained.

In step S12, the pixel is grayscale-converted to obtain the converted grayscale value of the pixel.

In step S13, the grayscale value of the display interface is adjusted based on the converted grayscale value of the pixel.

In the present embodiment, by adjusting the grayscale value of the display interface, the brightness and contrast ratio of the display interface are changed, so that when the ambient brightness is low, the backlight of the display interface whose grayscale is reduced is changed. By reducing the transmissivity of, the brightness and contrast ratio of the entire display interface is significantly reduced, and the eyesight of the user can be protected from the screen. Moreover, in a low-brightness environment, the display interface's brightness and contrast ratio are reduced, so the effect on the gray level of the displayed image is small, so the user can satisfy the requirements for the image gray level, save the power consumption of the terminal, and experience the user experience. Will get better.

FIG. 2 is a flowchart showing a display brightness adjusting method according to another embodiment. As shown in FIG. 2, step S12 preferably includes the following sub-steps.

In sub-step S21, the correspondence data including the converted gray scale value corresponding to the original gray scale value of the pixel after the gray scale conversion is obtained.

In sub-step S22, the converted grayscale value corresponding to the original grayscale value of the pixel is queried from the correspondence data.

FIG. 3 is a flowchart showing a display brightness adjusting method according to another embodiment. As shown in FIG. 3, step S12 preferably includes the following sub-steps.

In sub-step S31, a conversion function for gray scale conversion is acquired.

In sub-step S32, the grayscale value converted for each pixel is calculated based on the conversion function and the original grayscale value of each pixel.

In the selectable technical solution, the correspondence data of the grayscale conversion may be preset, and the converted grayscale value corresponding to the original grayscale value of the pixel may be queried based on the correspondence data. It is also possible to preset the conversion function of the above and calculate the converted gray scale value corresponding to the original gray scale value of the pixel based on the conversion function. This makes it possible to quickly and accurately determine the grayscale value after the grayscale conversion, and the brightness and contrast ratio of the display interface are adjusted to adapt to the current ambient brightness, so It is possible to secure the gradation quality of the image on the assumption that the image is damaged.

Desirably, the above-mentioned correspondence data includes the original grayscale values randomly selected and uniformly distributed, and the corresponding converted grayscale values. For example, if the original grayscale values are 0-255, the correspondence data includes the transformed grayscale values corresponding to the 10 original grayscale values and is shown in Table 1 below.

The correspondence data in Table 1 makes it possible to fit a grayscale conversion curve, and on the basis of the curve, a converted grayscale value corresponding to the entire original grayscale value can be obtained.

FIG. 4 is a flowchart showing a display brightness adjusting method according to another embodiment. As shown in FIG. 4, step S12 preferably includes the following sub-steps.

In sub-step S41, the current environmental brightness is detected.

In sub-step S42, the correspondence data or conversion function for gray scale conversion is selected based on the current environmental brightness.

In sub-step S43, based on the selected correspondence data, the transformed grayscale value corresponding to the original grayscale value of the pixel is queried, or based on the selected transformation function of the pixel, Compute the transformed grayscale value corresponding to the original grayscale value.

In the selectable technical solution, it is also possible to select the corresponding gray scale conversion correspondence data or conversion function based on the environmental brightness. That is, under different ambient brightness, the adjustment to the gray scale of the display interface utilizes different brightness conversion criteria. For example, when the environmental brightness is 0.001lux, the correspondence table A is selected and grayscale conversion is performed. When the environmental brightness is 0.003lux, the correspondence table B is selected and grayscale conversion is performed. The adjustment targets for the gray scale of the display interface are different under different ambient brightness. Based on the ambient brightness, select the corresponding relationship data or function to adapt the brightness and contrast ratio of the display interface to the ambient brightness, which can protect the user's eyesight from the screen and improve the user experience. ..

FIG. 5 is a flowchart showing a display brightness adjusting method according to another embodiment.
As shown in FIG. 5, step S12 preferably includes the following substeps.

In sub-step S51, the number of display digits of the original gray scale value is acquired.

In sub-step S52, the correspondence data or conversion function for gray scale conversion is selected based on the number of display digits of the original gray scale value.

In sub-step S53, the transformed grayscale value corresponding to the original grayscale value of the pixel is queried based on the selected correspondence data, or the original grayscale value of the pixel is determined based on the selected transformation function. Compute the transformed grayscale value corresponding to the grayscale value.

In the selectable technical solution, it is also possible to select the corresponding relation data or conversion function of the corresponding gray scale conversion based on the number of displayed digits of the gray scale value. For example, when the number of displayed digits of the gray scale value is 8 bits, the correspondence table 1 is selected to convert the gray scale. When the number of display digits of the gray scale value is 10 bits, the correspondence table 2 is selected to convert the gray scale. In this way, the grayscale adjustment can be adapted to display interfaces with different display parameters. That is, for any application having a display parameter, the gray scale can be adjusted by using the method, and the application range becomes wider.

FIG. 6 is a flowchart showing a method for adjusting display brightness according to another embodiment. As shown in FIG. 6, step S12 preferably includes the following substeps.

In sub-step S61, the current environmental brightness value is detected.

In sub-step S62, if the current environmental brightness value is less than or equal to the set brightness value, grayscale conversion is performed on the pixel to obtain the converted grayscale value of the pixel.

In the selectable technical solution, the gray scale is adjusted with respect to the display interface only when the environmental brightness is lower than a certain level (for example, the environmental brightness is 0.1 lux or less), thereby displaying based on the environmental brightness. It avoids frequent grayscale adjustment of the interface, saves terminal processing power and power consumption, and improves the user experience.

As shown in FIGS. 7a and 7b, the grayscale value is clearly reduced in the light area. In this way, the transmittance of the backlight is reduced, the overall brightness is clearly reduced, and the contrast ratio of the screen is also reduced. In a low-luminance environment, the reduction of the contrast ratio has a small effect on the gradation of the image, so that the user's requirements can be sufficiently satisfied.

In the display processor (AP display processor or DDIC), a series of look-up tables are set and the corresponding look-up tables are queried to convert the original grayscale data, in particular which look-up table. The call can be selected automatically or manually depending on the ambient brightness. The look-up table is a series of numbers, the content of which depends on the number of grayscale bits. When the gray scale is represented by 8 bits, the original gray scale value and the converted gray scale value of the look-up table are 0 to 255. When the gray scale is represented by 10 bits, the original gray scale value and the converted gray scale value of the look-up table are 0 to 1023.

As shown in FIG. 8, for example, if the original grayscale value is the A straight line and the B curve is selected as the lookup table, the grayscale value in the data is converted from 255 to 175, and at that time, in the lookup table, The 256th unit of should be (175/255)*255. When the grayscale value is converted from 150 to 90, the corresponding number for the grayscale value 150 in the lookup table should be (90/150)*255. In the look-up table, the normalization process is performed on 2 8 and 2 10.

FIG. 9 is a flowchart showing a display brightness adjusting method according to another embodiment. As shown in FIG. 9, the method further includes the following steps.

In step S91, the environmental brightness value is detected.

In step S92, the display brightness value of the screen is adjusted based on the environment brightness value.

In step S93, the relationship between the adjusted current brightness value of the screen and the set brightness value is determined.

If it is determined in step S94 that the current brightness value is lower than the first set brightness value, the first type gray scale value is adjusted.

When it is determined in step S95 that the current brightness value is higher than the second set brightness value, the second type of gray scale value is adjusted.

If the ambient brightness is low, the terminal first automatically adjusts the display brightness of the screen, but the adjusted display brightness of the screen may still be too high for the user. Moreover, after the user opens an application, the display brightness of the screen still recovers the brightness before adjusting the brightness. Therefore, the user experience is not good. In the selectable technical solution, after adjusting the brightness of the screen, the different brightness on the screen is judged again, and the brightness is adjusted according to the part having the brightness. As shown in FIG. 7a, the screen does not require readjustment of the gray scale because the gray scale value in the upper half is large and the brightness is low. Since the gray scale value of the lower half of the screen is small and the brightness is high, only the lower half of the screen can be adjusted. Thus, under any circumstances, the brightness of the display interface of the screen can be effectively reduced and the eyesight of the user can be protected from the screen.

FIG. 10 is a flowchart showing a method for adjusting display brightness according to another embodiment. As shown in FIG. 10, preferably, before the step of obtaining the original grayscale value of the pixel at the display interface, the method further comprises the following steps.

In step S101, the brightness value of a pixel in the display interface is detected.

In step S102, it is determined whether the detected brightness value of the pixel in the display interface exceeds the set brightness value.

If it is determined in step S103 that the brightness exceeds the set brightness value, the location information of the pixel that exceeds the set brightness value is specified.

In step S104, the grayscale value of the located pixel is adjusted.

In a selectable technique, the gray scale of pixels is adjusted based on the brightness of each pixel on the screen. In this way, the brightness of the display interface of the screen can be reduced quickly and accurately, and the eyesight of the user can be protected from the screen.

FIG. 11 is a flowchart showing a method for adjusting display brightness according to another embodiment. As shown in FIG. 11, the method further includes the following steps.

In step S111, the value of the color space displayed on the screen is acquired.

In step S112, the grayscale value of each pixel in the display interface is adjusted based on the acquired color space value.

In the selectable technical solution, the value of the color space displayed on the screen (that is, the numerical value corresponding to the range field constituted by the number of colors displayed in a certain color mode of the screen) is further acquired, and the color gamut is obtained. Adjust the gray scale according to the space. As described above, the adjustment of the brightness of the screen can be adapted to the performance of the screen, the effect of adjusting the brightness can be improved, and the eyesight of the user can be protected.

FIG. 12 is a flowchart showing a display brightness adjusting method according to another embodiment. As shown in FIG. 12, the method preferably further includes the following steps.

In step S121, the correspondence between the input grayscale value and the output grayscale value is established according to each pixel. The correspondence is that the value of the ratio of the input grayscale value and the output grayscale value changes nonlinearly or linearly according to the magnitude of the grayscale value. The value of the ratio to the scale value is 1 or more.

If it is obtained in step S122 that the screen brightness value is higher than the set brightness value, the output grayscale value of the pixel in the screen display interface is adjusted based on the ratio value.

In the selectable technical solution, the correspondence of gray scale adjustment is established in advance, and the gray scale value of the screen after adjustment is larger than the gray scale value of the screen before adjustment. In this way, the brightness of the screen after adjustment becomes low, and the eyesight of the user can be protected.

In the present embodiment, it is applied to a low-luminance environment in which there is no lighting device by outputting extremely low luminance to the display system in an environment where the luminance is extremely low to reduce eye damage.

Furthermore, it is valid for the entire display content, not for an application. In this way, it is not necessary to develop a corresponding night mode for each application separately, but the size of the resource file can be reduced to save the storage space, and the operation is simple and the user experience is good.

FIG. 13 is a block diagram showing a display brightness adjusting device according to one embodiment. As shown in FIG. 13, the apparatus includes a first acquisition module 1301 configured to acquire an original grayscale value of a pixel in a display interface, and a grayscale conversion for each pixel to convert the pixel. And a first adjustment module 1303 configured to adjust the grayscale value of the display interface based on the converted grayscale value of the pixel. Including and

FIG. 14 is a block diagram showing a conversion module according to one embodiment. As shown in FIG. 14, preferably, the conversion module 1302 is configured to obtain the grayscale converted correspondence data including the converted grayscale value corresponding to the original grayscale value of the pixel. An acquisition sub-module 141, and a query sub-module 142 configured to query the transformed grayscale value corresponding to the original grayscale value of the pixel from the correspondence data.

FIG. 15 is a block diagram showing a conversion module according to another embodiment. As shown in FIG. 15, preferably, the conversion module 1302 is based on the acquisition sub-module 151 configured to acquire the conversion function of the grayscale conversion, and the conversion function and the original grayscale value of the pixel. , A calculation sub-module 152 configured to calculate a converted grayscale value for each pixel.

FIG. 16 is a block diagram showing a conversion module according to another embodiment. As shown in FIG. 16, preferably, the conversion module 1302 has a detection sub-module 161 configured to detect the current ambient brightness and a correspondence relationship for gray scale conversion based on the current ambient brightness. It includes a selection sub-module 162 configured to select data or a transformation function and a query sub-module 163 or a calculation sub-module 164. The query sub-module 163 is configured to query the transformed grayscale value corresponding to the original grayscale value of the pixel based on the selected correspondence data, or the calculation submodule 164 , And is configured to calculate a transformed grayscale value corresponding to the original grayscale value of the pixel based on the selected transformation function.

FIG. 17 is a block diagram showing a conversion module according to another embodiment. As shown in FIG. 17, preferably, the conversion module 1302 is configured to obtain the display digits of the original grayscale value, and the acquisition sub-module 171 configured to obtain the display digits of the original grayscale value. A selection sub-module 172 configured to select correspondence data or a transformation function for grayscale conversion based on the selected sub-module 172, the query sub-module 173 based on the selected correspondence data, Is configured to query the transformed grayscale value corresponding to the original grayscale value of the pixel, or the calculation sub-module 174 is based on the selected transformation function Is configured to calculate a transformed grayscale value corresponding to the grayscale value of

FIG. 18 is a block diagram showing a conversion module according to another embodiment. As shown in FIG. 18, preferably, the conversion module 1302 includes a detection sub-module 181 configured to detect a current ambient brightness value, and if the current ambient brightness value is less than or equal to a set brightness value, A transform sub-module 182 configured to grayscale transform the pixel to obtain the transformed grayscale value of the pixel.

FIG. 19 is a block diagram showing a conversion module according to another embodiment. As shown in FIG. 19, preferably, the apparatus is configured to detect the ambient brightness value, and to adjust the display brightness value of the screen based on the first detection module 1304 and the ambient brightness value. The first adjustment module 1303 further includes a second adjusting module 1305 configured and a first determining module 1306 configured to determine a relationship between the adjusted current luminance value and the set luminance value of the screen. Adjusts the gray scale value of the first type when it is determined that the current brightness value is lower than the first set brightness value, and the second type when it is determined that the current brightness value is higher than the second set brightness value. Is configured to adjust the grayscale value of.

FIG. 20 is a block diagram showing a conversion module according to another embodiment. As shown in FIG. 20, preferably, the device is configured to detect the luminance value of the pixel at the display interface before obtaining the original grayscale value of the pixel at the display interface, the second detection module 1307. And a second determination module 1308 configured to determine whether the brightness value of the pixel in the detected display interface exceeds a set brightness value, and if it is determined that the brightness value of the pixel exceeds the set brightness value, And a specifying module 1309 configured to specify location information of pixels that exceed the set brightness value, the first adjusting module 1303 adjusting a grayscale value of the pixels of which the position is specified. Is configured.

FIG. 21 is a block diagram showing a conversion module according to another embodiment. As shown in FIG. 21, preferably, the apparatus further includes a second acquisition module 1310 configured to acquire the value of the color space displayed on the screen, and the first adjustment module 1303 is acquired. The gray scale value of each pixel is adjusted in the display interface based on the value of the color space.

FIG. 22 is a block diagram showing a conversion module according to another embodiment. As shown in FIG. 22, preferably, the apparatus is an establishment module configured to establish a correspondence relationship between an input grayscale value and an output grayscale value according to each pixel of a plurality of groups, The correspondence is that the value of the ratio of the input grayscale value and the output grayscale value changes non-linearly or linearly according to the magnitude of the grayscale value, the input grayscale value Further comprising an establishment module 1311 having a ratio of the output grayscale value to the output grayscale value of 1 or more, wherein the first adjustment module 1303 is configured to obtain the ratio of The output brightness value of the pixel in the display interface of the screen is adjusted based on the value.

The specific manner in which each module of the apparatus of the above-described embodiments performs an operation is described in detail in the pertinent method embodiments and will not be described here.

The disclosure further comprises a processor and a memory configured to store instructions executable by the processor, the processor obtaining an original grayscale value for each pixel at a display interface, the processor comprising: Configured to grayscale transform a pixel to obtain a transformed grayscale value of the pixel and adjust the grayscale value of the display interface based on the transformed grayscale value of the pixel. A display brightness adjusting device is provided.

FIG. 23 is a block diagram showing a display brightness adjustment device according to one embodiment. For example, the device 2300 is a smartphone, a personal computer, a portable computer, a tablet computer, or the like.

Referring to FIG. 23, the device 2300 includes a processing unit 2302, a memory 2304, a power supply unit 2306, a multimedia unit 2308, an audio unit 2310, an input/output (I/O) interface 2312, and a sensor unit 2314. And a communication unit 2316, and one or more components.

The processing unit 2302 is generally configured to control the overall operation of the device 2300, such as display, telephone, data communication, camera operation, and operations associated with recording operations. The processing unit 2302 may comprise one or more processors 2320 for executing instructions in order to carry out all or some of the steps of the method described above. The processing unit 2302 may also include one or more modules, which allow the processing unit 2302 and other units to communicate with each other, eg, the processing unit 2302 includes a multimedia module. , Thereby enabling interaction between the multimedia unit 2308 and the processing unit 2302.

Memory 2304 is configured to store various types of data to support operation of device 2300. Examples of such data include instructions for some applications or some methods running on the device 2300, contact data, phone book data, messages, photos, videos and the like. The memory 2304 may be configured with any type of volatile or non-volatile memory device, or combinations thereof, such as static random access memory (SPRAM), electrically erasable programmable read only memory ( EEPROM), erasable programmable read only memory (EPROM), programmable read only memory (PROM), read only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

Power supply unit 2306 is configured to provide power to various units of device 2300. The power supply unit 2306 may comprise a power management system, one or more power supplies, and other units associated with generating, managing, and distributing power for the device 2300.

The multimedia unit 2308 may include a screen configured to provide an output interface between the device 2300 and a user. In some embodiments, the screen may comprise a liquid crystal display (LCD) and touch panel (TP). When the screen includes a touch panel, the screen can be realized as a touch screen that receives an input signal from the user. The touch panel includes one or more touch sensors and detects touches, swipes, and gestures on the touch panel. The touch sensor may detect not only the boundary of the touch or swipe operation, but also the time during which the touch or swipe operation is performed and the pressure associated with the touch or swipe operation. In some embodiments, multimedia unit 2308 comprises a front camera and/or a rear camera. The front camera and/or the rear camera may receive an external multimedia datum when the device 2300 is in an operating mode such as a shooting mode or a video mode. Each of the front and rear cameras may be a fixed optical lens system or may have focus and optical zoom functions.

The audio unit 2310 is configured to output and/or input an audio signal. For example, audio unit 2310 comprises a microphone (“MIC”) configured to receive an external audio signal when device 2300 is in an operating mode such as a talk mode, a recording mode, and a voice recognition mode. Further, the received audio signal may be stored in the memory 2304 or may be transmitted via the communication unit 2316. In one embodiment, audio unit 2310 further comprises a loudspeaker that outputs an audio signal.

The I/O interface 2312 is configured to provide an interface connecting between the processing unit 2302 and the peripheral interface module. Peripheral interface modules include keyboards, click wheels, buttons and the like. The buttons may include, but are not limited to, a home button, volume button, start button and lock button.

The sensor unit 2314 comprises one or more sensors and provides a status assessment of various aspects of the device 2300. For example, the sensor unit 2314 may be the on/off state of the device 2300, the relative position of the units of the device 2300 (eg, display screen and keypad), the device 2300 or the change of the unit position of the device 2300, the user touching the device 2300. The presence/absence, the direction or acceleration/deceleration of the device 2300, and the change in the temperature of the device 2300 may be detected. The sensor unit 2314 may include a proximity sensor configured to detect the presence of nearby objects without making any physical contact. Further, the sensor unit 2314 may include an optical sensor such as a CMOS or CCD image sensor for use in imaging applications. In an embodiment, the sensor unit 2314 may include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor or a temperature sensor.

Communication unit 2316 is configured to enable wired or wireless communication between device 2300 and other devices. The device 2300 can access a wireless network that is based on a standard such as WiFi, 2G or 3G, or a combination thereof. In one exemplary embodiment, the communication unit 2316 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In another exemplary embodiment, the communication unit 2316 further comprises a near field communication (NFC) module to enable short range communication. For example, the NFC module is realized based on a radio frequency identification (RFID) technology, an infrared communication association (IrDA) technology, an ultra wideband (UWB) technology, a Bluetooth (registered trademark) (BT) technology, or another technology. May be.

In an exemplary embodiment, the apparatus 2300 is an application specific integrated circuit (ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable (programmably controllable) for performing the method described above. ,) logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components such as electronic components.

In the exemplary embodiment, a non-transitory computer-readable recording medium containing instructions is further provided. The non-transitory computer-readable recording medium containing the instructions is the memory 2304 containing the instructions. The instructions can be executed by the processor 2320 of the apparatus 2300 to implement the method described above. For example, the non-transitory computer-readable recording medium may be a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk (registered trademark), an optical data storage device, or the like.

A non-transitory computer-readable recording medium is provided. When the instructions of the non-transitory computer-readable recording medium are executed by the processor of the mobile terminal, the mobile terminal can execute the display brightness adjusting method. The method comprises the steps of obtaining an original grayscale value of a pixel at a display interface, grayscale converting the pixel to obtain a converted grayscale value of the pixel, and converting the pixel. Adjusting the grayscale value of the display interface based on the grayscale value.

Preferably, the step of grayscale converting the pixel to obtain the converted grayscale value of the pixel is grayscale converted, the converted grayscale value corresponding to the original grayscale value of the pixel. Substeps of obtaining correspondence data containing values, and substeps of querying the transformed grayscale values corresponding to the original grayscale values of the pixels from the correspondence data.
Alternatively, the step of grayscale converting the pixel to obtain the converted grayscale value of the pixel includes the substep of obtaining a conversion function of the grayscale conversion, and the conversion function and the original grayscale of the pixel. Calculating a grayscale value converted for each pixel based on the scale value.

Preferably, the step of performing grayscale conversion on the pixel to obtain the converted grayscale value of the pixel includes a substep of detecting a current ambient brightness, and a grayscale conversion based on the current ambient brightness. A substep of selecting correspondence data or a transformation function for the conversion, and a substep of inquiring a converted grayscale value corresponding to the original grayscale value of the pixel based on the selected correspondence data , Or calculating a transformed grayscale value corresponding to the original grayscale value of the pixel based on the selected transformation function.

Preferably, the step of grayscale converting the pixel to obtain the converted grayscale value of the pixel includes a substep of obtaining a display digit number of the original grayscale value, and the original grayscale. Corresponding to the original grayscale value of the pixel based on the number of displayed digits of the value, a substep of selecting correspondence data or a conversion function for grayscale conversion, and based on the selected correspondence data. Substep of querying the transformed grayscale value or calculating a transformed grayscale value corresponding to the original grayscale value of the pixel based on the selected transformation function.

Preferably, the step of performing grayscale conversion on the pixel to obtain the converted grayscale value of the pixel includes a sub-step of detecting a current environmental brightness value, and the current environmental brightness value is a set brightness value. And sub-steps of gray scale converting the pixel to obtain a converted gray scale value of the pixel if:

Preferably, the method includes a step of detecting an environmental brightness value, a step of adjusting the display brightness value of the screen based on the environmental brightness value, and a relationship between the adjusted current brightness value and the set brightness value of the screen. If it is determined that the current brightness value is lower than the first set brightness value, the step of adjusting the first type gray scale value and the current brightness value is determined to be higher than the second set brightness value. If so, adjusting the second type of gray scale value is further included.

Preferably, before the step of obtaining the original grayscale value of the pixel in the display interface, the method detects the brightness value of the pixel in the display interface, and the brightness value of the pixel in the detected display interface is A step of determining whether or not the set brightness value is exceeded, a step of specifying location information of a pixel that exceeds the set brightness value, and a position of which is specified when it is determined that the set brightness value is exceeded. Adjusting the grayscale value of the selected pixel.

Preferably, the method further comprises the steps of obtaining a color space value displayed on the screen, and adjusting a gray scale value of each pixel in the display interface based on the obtained color space value. Including.

Preferably, the method is a step of establishing a correspondence relationship between a plurality of groups of input grayscale values and output grayscale values according to each pixel, wherein the correspondence relationship is the input grayscale value and the The value of the ratio of the output grayscale value changes non-linearly or linearly according to the magnitude of the grayscale value, and the value of the ratio of the input grayscale value and the output grayscale value is 1 or more. And the step of adjusting the output brightness value of the pixel in the display interface of the screen based on the value of the ratio when the screen brightness value is higher than the set brightness value.

Other embodiments of the invention will be apparent to those skilled in the art from the specification and implementations of the invention disclosed herein. This application covers variations, uses, or applications of the present disclosure in accordance with the general principles of the invention and including deviations from the invention within the scope of what is known or practiced in the art. Is intended. While the specification and examples are considered exemplary only, the true scope and spirit of the invention is intended to be set forth in the appended claims.

It is obvious that the present invention is not limited to the exact constructions described above and shown in the accompanying drawings, and that various modifications and changes can be made without departing from the scope of the present invention. .. The scope of the invention is intended to be limited only by the scope of the appended claims.

[Cross reference to related application]
This application is based on Chinese Patent Application No. 201510020861.0 filed with the National Intellectual Property Office of China on January 15, 2015, and claims priority to the application, the entire contents of which are hereby incorporated by reference. Is taken into.

Claims (10)

Obtaining a grayscale value representing the shade of each subpixel as the original grayscale value of the pixel in the display interface;
Converting the original grayscale value for the pixel to another grayscale value to obtain the converted grayscale value of the pixel;
Adjusting the grayscale value of the display interface based on the transformed grayscale value of the pixel.
Converting the original grayscale value to another grayscale value for the pixel to obtain the converted grayscale value of the pixel,
A sub- step to detect the current ambient brightness,
A sub- selection function for the gray scale conversion, which includes correspondence data including a converted gray scale value corresponding to the original gray scale value of the pixel, or a conversion function of the gray scale conversion based on the current ambient brightness. Steps,
A sub- step of querying the transformed grayscale value corresponding to the original grayscale value of the pixel based on the selected correspondence data, or the original of the pixel based on the transformation function selected and a sub-step of calculating the converted gray-scale values corresponding to gray scale values,
Adjusting the display brightness value of the screen based on the current environment brightness value;
Determining the relationship between the brightness at different positions of the adjusted screen and the set brightness value,
Adjusting the gray scale to different degrees to different positions based on the judgment result of the relationship between the brightness at different positions of the adjusted screen and the set brightness value . Adjustment method. Converting the original grayscale value to another grayscale value for the pixel to obtain the converted grayscale value of the pixel,
A step of performing gray scale conversion on the pixel to obtain a converted gray scale value of the pixel when the environmental brightness value is equal to or lower than a predetermined brightness value. How to adjust the display brightness. Before the step of obtaining a grayscale value representing the shade of each subpixel as the original grayscale value of the pixel in the display interface,
Detecting the brightness value of the pixel in the display interface,
Determining whether or not the brightness value of the pixel in the detected display interface exceeds a set brightness value,
When it is determined that the set brightness value is exceeded, further including the step of specifying the location information of the pixel that exceeds the set brightness value,
The step of adjusting the grayscale value of the display interface based on the converted grayscale value of the pixel adjusts the grayscale value of the pixel located. How to adjust the display brightness of. Depending on each pixel where the position is specified, a step of establishing a correspondence relationship between different input grayscale values and output grayscale values, and as the correspondence relationship, the input grayscale value and the output grayscale value The value of the ratio of the input grayscale value is non-linearly or linearly changed according to the magnitude of the grayscale value, and the output grayscale value is larger than the input grayscale value. The value of the ratio to the output grayscale value is 1 or more,
Adjusting the output grayscale value of the pixel at the display interface of the screen based on the value of the ratio if the screen brightness value is obtained to be higher than the set brightness value. The method for adjusting display brightness according to item 3. A first acquisition module for acquiring a grayscale value representing the shade of each subpixel as the original grayscale value of the pixel in the display interface;
A conversion module for converting the original grayscale value into another grayscale value for each pixel to obtain a converted grayscale value of the pixel;
A first adjustment module for adjusting a grayscale value of the display interface based on the converted grayscale value of the pixel,
The conversion module is
A detection sub-module for detecting the current ambient brightness,
For selecting a correspondence data including a transformed grayscale value corresponding to the original grayscale value of the pixel, or a transformation function of the grayscale transformation for the grayscale transformation based on the current ambient brightness. A selection submodule of
A query sub-module for determining a transformed grayscale value corresponding to the original grayscale value of the pixel based on the selected correspondence data, or based on the transformation function selected A calculation sub-module for determining a transformed grayscale value corresponding to the original grayscale value of the pixel,
A display brightness value adjusting module of the screen for adjusting the display brightness value of the screen based on the current environment brightness value;
The relationship between the brightness at the different positions of the adjusted screen and the set brightness value is determined, and based on the judgment result of the relationship between the brightness at the different positions of the adjusted screen and the set brightness value, it is different for the different positions . A display brightness adjusting device further comprising a gray scale adjusting module for adjusting the gray scale according to the degree. The conversion module is
When the detection sub-module current environment brightness detected by the is less than a predetermined luminance value, the converted grayscale values of the pixels by converting the original gray scale values for each of the pixels to different gray scale values It acquires, The display brightness adjusting device of Claim 5 characterized by the above-mentioned. The device is
A second detection module for detecting the brightness value of a pixel in the display interface before obtaining a grayscale value representing the shade of each subpixel as the original grayscale value of the pixel in the display interface;
A second determination module for determining whether or not the brightness value of the pixel in the detected display interface exceeds a set brightness value,
When it is determined that the set brightness value is exceeded, further including a determination module for specifying the location information of the pixel that exceeds the set brightness value,
The display brightness adjusting apparatus according to claim 5, wherein the first adjusting module adjusts a gray scale value of the pixel whose position is specified. The device is
An establishment module for establishing a correspondence relationship between different input grayscale values and output grayscale values according to each pixel in which the position is specified , wherein the correspondence relationship is the input grayscale value and the The value of the ratio to the output grayscale value is non-linearly or linearly changed according to the magnitude of the grayscale value, and the input grayscale value is larger than the input grayscale value. Further comprising an establishment module in which the ratio of the grayscale value and the output grayscale value is greater than or equal to 1.
The first adjustment module adjusts the output gray scale of a pixel in the display interface of the screen based on the value of the ratio when the brightness value of the screen is obtained to be higher than the set brightness value. Item 7. A display brightness adjusting device according to item 7. A computer program that causes a computer to execute the method for adjusting display brightness according to claim 1, when the computer is operated. A computer-readable storage medium in which the computer program according to claim 9 is stored.

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