CN106817753A - A kind of background GTG that switches carries out method, device and the mobile terminal of power saving - Google Patents

Abstract

The embodiment of the invention discloses a method, a device and a mobile terminal for saving power by switching the background gray scale. The method includes: if the backlight control function is turned on, detecting the remaining power value of the terminal; when it is detected that the remaining power value is lower than or equal to the power threshold, reducing the gray scale of the screen background image to update the screen display; Based on the backlight control function, the gray scale and brightness of the screen backlight are adjusted for the updated screen display image. The embodiment of the present invention can increase the adjustment space for reducing the brightness of the screen backlight, thereby reducing the power consumption of the terminal.

Description

A method, device and mobile terminal for saving power by switching background grayscale

technical field

The present invention relates to the field of electronic equipment, in particular to a method, device and mobile terminal for saving power by switching background gray scales.

Background technique

With the rapid development of mobile communication technology and computer technology, mobile terminals such as smart phones and tablet computers have become indispensable communication tools in people's lives. How to take into account the low power consumption requirements of the terminal and the image quality displayed on the screen is an urgent problem to be solved in the field of image processing.

Backlight control functions such as the Content Adaptive Brightness Control (CABC) function are used to adjust the relationship between the grayscale value of the image and the brightness of the screen backlight according to the image content displayed on the terminal screen, which can effectively reduce the brightness of the screen backlight. At the same time, the display quality of the image is maintained. However, limited by the image content displayed on the screen, the current power saving effect based on the backlight control function is relatively poor, resulting in the problem of short battery life of the terminal.

Contents of the invention

Embodiments of the present invention provide a method, device and mobile terminal for saving power by switching background gray scales, which can prolong the battery life of the terminal.

In the first aspect, the embodiment of the present invention provides a method for switching the background gray scale to save power, including:

If the backlight control function is turned on, then detect the remaining power value of the terminal;

When it is detected that the remaining power value is lower than or equal to the power threshold, the gray scale of the screen background image is reduced to update the screen display;

Based on the backlight control function, the gray scale and brightness of the screen backlight are adjusted for the updated screen display image.

In the second aspect, an embodiment of the present invention provides a device for switching the background gray scale to save power, including:

The power detection module is used to detect the remaining power value of the terminal if the backlight control function is turned on;

The screen grayscale reduction module is used to reduce the grayscale of the screen background image to update the screen display when it is detected that the remaining power value is lower than or equal to the power threshold;

The backlight adjustment module is used to adjust the gray scale and screen backlight brightness of the updated screen display image based on the backlight control function.

In a third aspect, an embodiment of the present invention provides a mobile terminal, including a memory, a processor, and a computer program stored on the memory and operable on the processor, wherein the processor implements the following when executing the computer program step:

If the backlight control function is turned on, then detect the remaining power value of the terminal;

When it is detected that the remaining power value is lower than or equal to the power threshold, the gray scale of the screen background image is reduced to update the screen display;

Based on the backlight control function, the gray scale and brightness of the screen backlight are adjusted for the updated screen display image.

In the embodiment of the present invention, when the backlight control function is in the on state, by detecting the remaining power value of the terminal, when it is detected that the remaining power value is lower than or equal to the power threshold, the gray scale of the screen backlight image can be reduced, which can improve the brightness of the screen display. The grayscale can be improved, and then the grayscale of the screen display and the brightness of the screen backlight can be adjusted based on the backlight control function. The reduction adjustment space of the brightness of the screen backlight can be increased, so that the power consumption of the terminal can be reduced.

Description of drawings

FIG. 1 is a schematic flowchart of a method for switching background gray scales to save power provided in an embodiment of the present invention;

FIG. 2 is a schematic diagram of a currently displayed image provided in an embodiment of the present invention;

FIG. 3 is a schematic flowchart of another method for switching background gray scales to save power provided in an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a device for switching background gray scales to save power provided in an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a mobile terminal provided in an embodiment of the present invention.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe the steps as sequential processing, many of the steps may be performed in parallel, concurrently, or simultaneously. Additionally, the order of steps may be rearranged. The process may be terminated when its operations are complete, but may also have additional steps not included in the figure. The processing may correspond to a method, function, procedure, subroutine, subroutine, or the like.

Fig. 1 is a schematic flowchart of a method for switching background gray scales for power saving provided in an embodiment of the present invention, the method may be executed by a device for switching background gray scales for power saving, the device may be implemented by software and/or hardware, Generally, it can be loaded in a mobile terminal. As shown in Figure 1, the method may include:

Step 11. If the backlight control function is turned on, detect the remaining power value of the terminal.

Specifically, if the backlight control function is turned on, the remaining power value of the terminal can be regularly detected at a set time interval, so that whether the terminal is in a low power mode can be subsequently determined based on the detected remaining power value.

Step 12. When it is detected that the remaining power value is lower than or equal to the power threshold, lower the gray scale of the screen background image to update the screen display image.

Wherein, the power threshold may be an empirical value pre-stored in the terminal, which may be preset in the terminal before the mobile terminal leaves the factory, or may be set according to user operations.

Referring to FIG. 2, the currently displayed image corresponding to the screen display may include a background image 01 and a content layer 02. For example, the currently displayed image may be an application icon interface, or an image of other application interfaces such as an instant messaging application, a calendar, a text message, or a note.

Specifically, after detecting the remaining power value of the terminal, compare the remaining power value of the terminal with the power threshold, if the remaining power value of the terminal is lower than or equal to the power threshold, then determine that the terminal is in low power mode; otherwise, determine that the terminal in normal mode.

The power saving effect of the backlight control function on dark images (low grayscale images) is better than that on light color images (high grayscale images), because dark images can improve the grayscale space of the image itself, so the corresponding There is also a lot of room to lower the brightness of the backlight. Specifically, if the terminal is in the low power mode, reducing the grayscale of the screen background image can reduce the grayscale of the screen display image including the screen background image and the content layer, thereby increasing the grayscale improvement space of the screen display image, and correspondingly It can increase the drop space of screen backlight brightness.

Step 13, adjusting the gray scale and brightness of the screen backlight on the updated screen display image based on the backlight control function.

Specifically, the backlight control function increases the gray scale of the updated screen display image to the same extent as reduces the brightness of the screen backlight, and can basically keep the brightness of the image consistent before and after processing.

In the embodiment of the present invention, when the backlight control function is in the on state, by detecting the remaining power value of the terminal, when it is detected that the remaining power value is lower than or equal to the power threshold, the gray scale of the screen backlight image can be reduced, which can improve the brightness of the screen display. The grayscale can be improved, and then the grayscale of the screen display and the brightness of the screen backlight can be adjusted based on the backlight control function. The reduction adjustment space of the brightness of the screen backlight can be increased, so that the power consumption of the terminal can be reduced.

Exemplarily, reducing the gray scale of the screen background image includes:

Selecting and updating a target background image of the screen from at least one preset power-saving background image, wherein the grayscale of the power-saving background image is smaller than a grayscale threshold.

Wherein, at least one power-saving background image is preset in the terminal, and the power-saving background image is used to reduce the grayscale of the currently displayed image on the screen. The grayscale threshold can be an empirical value determined by the user, or it can be determined based on the historical records of the backlight control function, such as for each historical image content displayed on the screen, counting the grayscale value of the historical image content and based on the backlight control. The function adjusts the screen backlight brightness of the historical image, determines each target historical image whose screen backlight brightness is higher than the brightness threshold, and can use the minimum gray value among the gray scale values of each target historical image as the gray scale threshold. Reducing the gray scale of the screen background image directly through the preset power-saving background image can not only effectively increase the brightness reduction of the screen backlight, but also improve the update efficiency of the screen display image, thereby improving the efficiency of switching the background gray scale to save power.

Exemplarily, selecting and updating the target background image of the screen from at least one preset power-saving background image may include:

If the screen is in a static picture scene, then determining the first power-saving background image as the target background image of the screen;

If the screen is in the image preview scene, then determine the second power-saving background image as the target background image of the screen;

If the screen is in a dynamic picture scene, then determine the third power-saving background image as the target background image of the screen;

Wherein, the grayscales of the first power-saving background image, the second power-saving background image and the third power-saving background image decrease sequentially.

Wherein, the scene type of the screen can be determined according to at least one scene feature in the display frame characteristics of the screen, user behavior characteristics or camera status, and the display frame characteristics can be the brightness, transparency, hue, contrast, and saturation of the screen display frame or ambiguity etc. For example, if the current frame rate of the screen is zero, it is determined that the screen is in a static image scene; if the camera of the terminal is activated, then it is determined that the screen is in a picture preview scene; if the currently running active process is a video process or a game process , and the current layer is a dynamic layer, it is determined that the screen is in a dynamic picture scene.

Specifically, when the screen is in different scenes, using different power-saving background images can further reduce the power consumption of the terminal while taking into account the display effect of the screen, thereby prolonging the battery life of the terminal.

Exemplarily, reducing the gray scale of the screen background image may also include:

A preset value is subtracted from the grayscale of each pixel in the initial background image.

Wherein, the initial background image refers to the background image of the currently displayed image. The preset value corresponding to the initial background image can be one or more. For example, the current display image is divided into multiple sub-regions, and the average gray scale value of each sub-region is counted separately, and the value corresponding to the average gray scale value of each sub-region is determined according to the mapping relationship between the pre-constructed gray scale average value and the preset value. , wherein the higher the gray scale average value in the mapping relationship, the higher the corresponding preset value.

On the basis of the above embodiments, referring to FIG. 3 , in order to further improve the power saving effect, the method for switching the background gray scale to save power may also include:

Step 24. When a charging event is detected and the remaining power value of the screen is higher than the power threshold, re-use the initial background image as the target background image of the screen.

After detecting that the terminal is switched from the low power mode to the non-low power mode, the initial background image is re-used as the target background image of the screen. Wherein, the initial background image may be a predetermined background image or a background image with high user satisfaction that is preset or personalized according to user operations.

Step 25 , adjusting the gray scale and brightness of the screen backlight on the updated screen display image based on the backlight control function.

It should be noted that the function of step 25 is the same as that of step 13, and step 25 can also be omitted. It is only necessary to adjust the grayscale and screen backlight brightness based on the backlight control function after each update of the screen background image, that is, each update of the screen display image That's it.

Specifically, adjusting the gray scale and screen backlight brightness of the screen display image with the initial background image as the background based on the backlight control function can provide the user with the screen display image and improve user satisfaction.

FIG. 4 is a schematic structural diagram of a device for switching background gray scales to save power provided in an embodiment of the present invention, and the device can be configured in a mobile terminal. As shown in Figure 4, the specific structure of the device for switching the background gray scale to save power may include:

The power detection module 31 is used to detect the remaining power value of the terminal if the backlight control function is turned on;

The screen grayscale reduction module 32 is configured to reduce the grayscale of the screen background image to update the screen display when it is detected that the remaining power value is lower than or equal to the power threshold;

The backlight adjustment module 33 is configured to adjust the gray scale and screen backlight brightness of the updated screen display image based on the backlight control function.

Exemplarily, the screen grayscale reduction module 31 can be specifically used for:

Selecting and updating a target background image of the screen from at least one preset power-saving background image, wherein the grayscale of the power-saving background image is smaller than a grayscale threshold.

Exemplarily, the screen grayscale reduction module 31 can be specifically used for:

If the screen is in a static picture scene, then determining the first power-saving background image as the target background image of the screen;

If the screen is in the image preview scene, then determine the second power-saving background image as the target background image of the screen;

If the screen is in a dynamic picture scene, then determine the third power-saving background image as the target background image of the screen;

Wherein, the grayscales of the first power-saving background image, the second power-saving background image and the third power-saving background image decrease sequentially.

Exemplarily, the above-mentioned device may also include:

A background image recovery module, configured to select and update the target background image of the screen from at least one preset power-saving background image, when a charging event is detected and the remaining power value of the screen is higher than the power threshold, Reuse the initial background image as the target background image of the screen.

Exemplarily, the screen grayscale reduction module 31 may be specifically configured to: subtract a preset value from the grayscale of each pixel in the initial background image.

The above-mentioned device for switching background gray scales to save power belongs to the same inventive concept as the method for switching background gray scales provided by any embodiment of the present invention to save power, and can implement the switching background gray scales provided by any embodiment of the present invention to save power. The power method has corresponding functional modules and beneficial effects for executing the method of switching the background gray scale to save power. For technical details not described in detail in this embodiment, refer to the method for saving power by switching the background gray scale provided by any embodiment of the present invention.

An embodiment of the present invention provides a mobile terminal, which may include a memory, a processor, and a computer program stored in the memory and operable on the processor.

FIG. 5 is a schematic structural diagram of a mobile terminal provided in an embodiment of the present invention. As shown in FIG. Interface 403, RF circuit 405, audio circuit 406, speaker 411, power management chip 408, input/output (I/O) subsystem 409, other input/control devices 410, and external port 404, these components pass through one or more Communication bus or signal line 407 for communication.

It should be understood that the illustrated smartphone 400 is merely one example of a mobile terminal, and that the smartphone 400 may have more or fewer components than shown, two or more components may be combined, or Different component configurations are possible. The various components shown in the figures may be implemented in hardware, software, or a combination of hardware and software including one or more signal processing and/or application specific integrated circuits.

The smart phone provided by this embodiment for switching the background gray scale to save power will be described in detail below.

Memory 401: The memory 401 can be accessed by the CPU 402, the peripheral interface 403, etc. The memory 401 can include a high-speed random access memory, and can also include a non-volatile memory, such as one or more disk storage devices, flash memory devices, or other volatile memory devices. Volatile solid-state memory devices.

The peripheral interface 403 can connect the input and output peripherals of the device to the CPU 402 and the memory 401 .

I/O subsystem 409 : The I/O subsystem 409 can connect input and output peripherals on the device, such as touch screen 402 and other input/control devices 410 , to peripheral interface 403 . I/O subsystem 409 may include a display controller 4091 and one or more input controllers 4092 for controlling other input/control devices 410 . Among them, one or more input controllers 4092 receive electrical signals from or send electrical signals to other input/control devices 410, which may include physical buttons (push buttons, rocker buttons, etc.) ), dial, slide switch, joystick, or click wheel. It should be noted that the input controller 4092 can be connected to any of the following: a keyboard, an infrared port, a USB interface, and a pointing device such as a mouse.

Touch screen 412: The touch screen 412 is an input interface and an output interface between the user terminal and the user, and displays visual output to the user. The visual output may include graphics, text, icons, or videos.

The display controller 4091 in the I/O subsystem 409 receives electrical signals from the touch screen 412 or sends electrical signals to the touch screen 412 . The touch screen 412 detects the contact on the touch screen, and the display controller 4091 converts the detected contact into an interaction with the user interface object displayed on the touch screen 412, that is, realizes human-computer interaction, and the user interface object displayed on the touch screen 412 can be a running Icons for games, icons for networking to appropriate networks, etc. It is worth noting that the device may also include an optical mouse, which is a touch-sensitive surface that does not display visual output, or that is an extension of a touch-sensitive surface formed by a touchscreen.

The RF circuit 405 is mainly used to establish communication between the mobile phone and the wireless network (that is, the network side), and realize data reception and transmission between the mobile phone and the wireless network. Such as sending and receiving short messages, e-mails, etc. Specifically, the RF circuit 405 receives and sends RF signals, which are also called electromagnetic signals, and the RF circuit 405 converts electrical signals into electromagnetic signals or converts electromagnetic signals into electrical signals, and communicates with communication networks and other devices through the electromagnetic signals to communicate. RF circuitry 405 may include known circuitry for performing these functions including, but not limited to, an antenna system, an RF transceiver, one or more amplifiers, a tuner, one or more oscillators, a digital signal processor, a CODEC chip Group, Subscriber Identity Module (Subscriber Identity Module, SIM) and so on.

The audio circuit 406 is mainly used to receive audio data from the peripheral interface 403 , convert the audio data into electrical signals, and send the electrical signals to the speaker 411 .

The speaker 411 is used to restore the voice signal received by the mobile phone from the wireless network through the RF circuit 405 into sound and play the sound to the user.

The power management chip 408 is used for power supply and power management for the hardware connected to the CPU 402 , the I/O subsystem and the peripheral interface.

The CPU 402 provided by the embodiment of the present invention implements the following steps when executing the computer program:

If the backlight control function is turned on, then detect the remaining power value of the terminal;

When it is detected that the remaining power value is lower than or equal to the power threshold, the gray scale of the screen background image is reduced to update the screen display;

Based on the backlight control function, the gray scale and brightness of the screen backlight are adjusted for the updated screen display image.

The above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention, and the present invention The scope is determined by the scope of the appended claims.

Claims (11)

1. it is a kind of to switch the method that background GTG carries out power saving, it is characterised in that including：

If backlight control function is in opening, the residual electric quantity of terminal is detected；

When the residual electric quantity is detected less than or equal to power threshold, the GTG of screen background figure is reduced, to update screen Curtain display picture；

Based on backlight control function the on-screen displays for updating are carried out with the adjustment of GTG and screen backlight brightness.

2. method according to claim 1, it is characterised in that reduce the GTG of screen background figure, including：

The target background figure of screen is selected and updated from default at least one power saving Background, wherein the power saving Background GTG be less than GTG threshold value.

3. method according to claim 2, it is characterised in that the selection and more from default at least one power saving Background The target background figure of new screen, including：

If screen is in tableaux type scene, the first power saving Background is defined as the target background figure of screen；

If screen is in preview picture scene, the second power saving Background is defined as the target background figure of screen；

If screen is in dynamic menu scene, the 3rd power saving Background is defined as the target background figure of screen；

Wherein, the GTG of the first power saving Background, the second power saving Background and the 3rd power saving Background is successively Reduce.

4. method according to claim 2, it is characterised in that the selection and more from default at least one power saving Background After the target background figure of new screen, including：

Detecting charge event, and the residual electric quantity of the screen is when being higher than the power threshold, by the initial background Figure is again as the target background figure of the screen.

5. method according to claim 1, it is characterised in that reduce the GTG of screen background figure, including：

The GTG of each pixel in the initial background figure is subtracted into default value.

6. a kind of background GTG that switches carries out the device of power saving, it is characterised in that including：

Electric power detection module, if being in opening for backlight control function, detects the residual electric quantity of terminal；

Screen GTG reduction module, for when the residual electric quantity is detected less than or equal to power threshold, reducing screen The GTG of Background, to update on-screen displays；

Backlight adjusting module, for the on-screen displays for updating to be carried out with GTG and screen back light based on backlight control function The adjustment of degree.

7. device according to claim 6, it is characterised in that the screen GTG reduction module specifically for：

The target background figure of screen is selected and updated from default at least one power saving Background, wherein the power saving Background GTG be less than GTG threshold value.

8. device according to claim 7, it is characterised in that the screen GTG reduction module specifically for：

If screen is in tableaux type scene, the first power saving Background is defined as the target background figure of screen；

If screen is in preview picture scene, the second power saving Background is defined as the target background figure of screen；

If screen is in dynamic menu scene, the 3rd power saving Background is defined as the target background figure of screen；

Wherein, the GTG of the first power saving Background, the second power saving Background and the 3rd power saving Background is successively Reduce.

9. device according to claim 7, it is characterised in that including：

Background recovery module, for being selected from default at least one power saving Background and updates the target background figure of screen Afterwards, detecting charge event, and the residual electric quantity of the screen is when being higher than the power threshold, by the initial background Figure is again as the target background figure of the screen.

10. device according to claim 6, it is characterised in that the screen GTG reduction module specifically for：

The GTG of each pixel in the initial background figure is subtracted into default value.

A kind of 11. mobile terminals, including memory, processor and storage are on a memory and the calculating that can run on a processor Machine program, it is characterised in that realize following steps during computer program described in the computing device：

If backlight control function is in opening, the residual electric quantity of terminal is detected；

When the residual electric quantity is detected less than or equal to power threshold, the GTG of screen background figure is reduced, to update screen Curtain display picture；

Based on backlight control function the on-screen displays for updating are carried out with the adjustment of GTG and screen backlight brightness.