CN103414834B - A kind of screen power-saving method, device and mobile terminal - Google Patents

Abstract

The present invention is applicable to the technical field of mobile terminals, and provides a screen power saving method, device and mobile terminal, including: when the screen of the mobile terminal is in a bright screen state, collecting an image of the environment where the mobile terminal is located; the brightness value of each pixel in the image, and determine the ambient brightness of the mobile terminal according to the brightness value of each pixel; adjust the screen brightness of the mobile terminal according to the ambient brightness of the mobile terminal. In the embodiment of the present invention, the situation that the user cannot see the content displayed on the screen when the ambient light is bright or dark is avoided, and the cumbersome operation of the screen brightness adjustment method of the mobile terminal is solved, which consumes the user's time and reduces the Power-saving efficiency leads to unnecessary power consumption and reduced screen service life, which saves user time, improves power-saving efficiency, reduces power-saving power consumption, and improves screen life.

Description

A screen power saving method, device and mobile terminal

technical field

The invention belongs to the technical field of mobile terminals, and in particular relates to a screen power saving method, device and mobile terminal.

Background technique

With the advent of the era of intelligent mobile terminals, the configuration of mobile terminals is becoming more and more powerful, and the functions are becoming more and more complete. At the same time, due to the limitation of the volume of mobile terminals and the bottleneck of battery technology, the power of mobile terminals The screen display of the terminal consumes too much power, and the power consumption of the screen of some mobile terminals even reaches more than 50% of the total power. Usually, the brightness of the mobile terminal is adjusted to reduce the power consumed by the screen display of the mobile terminal.

However, due to the cumbersome operation of the existing mobile terminal screen brightness adjustment method, the user's time is consumed, the power saving efficiency is reduced, and unnecessary power consumption is caused and the service life of the screen is reduced. For example, the brightness of the mobile terminal screen is fixed. When the ambient light is bright or dark, the content displayed on the screen cannot be seen clearly. Each time the user needs to manually adjust the brightness to change the screen brightness to adapt to different use environments. , the operation is cumbersome. In addition, in the prior art, this function is also implemented by adding a light sensor in the mobile terminal, but the sensor itself consumes a lot of power, and adding a light sensor also increases the cost of the mobile terminal.

Contents of the invention

The purpose of the embodiments of the present invention is to provide a screen power saving method, which aims to solve the problem that due to the cumbersome operation of the existing mobile terminal screen brightness adjustment method, the user's time is wasted, the power saving efficiency is reduced, and unnecessary power consumption and screen usage are caused. The problem of reduced lifespan.

The embodiment of the present invention is achieved in this way, a screen power saving method, comprising:

When the screen of the mobile terminal is in a bright screen state, collecting an image of the environment where the mobile terminal is located;

Acquiring the brightness value of each pixel in the image, and determining the ambient brightness of the mobile terminal according to the brightness value of each pixel;

Adjusting the screen brightness of the mobile terminal according to the ambient brightness of the mobile terminal.

Another object of the embodiments of the present invention is to provide a screen power saving device, comprising:

A first acquiring unit, configured to acquire an image of the environment where the mobile terminal is located when the screen of the mobile terminal is in a bright screen state;

The second acquisition unit is configured to acquire the brightness value of each pixel in the image, and determine the ambient brightness of the mobile terminal according to the brightness value of each pixel;

An adjusting unit, configured to adjust the screen brightness of the mobile terminal according to the ambient brightness of the mobile terminal.

Another object of the embodiments of the present invention is to provide a mobile terminal, including the above-mentioned screen power saving device.

In the embodiment of the present invention, the brightness value of each pixel in the image is obtained, and the ambient brightness of the mobile terminal is determined according to the brightness value of each pixel; the mobile terminal is adjusted according to the ambient brightness of the mobile terminal. The screen brightness of the mobile terminal avoids the situation that the user cannot see the content displayed on the screen when the ambient light is bright or dark. When the ambient light is bright, the screen brightness is automatically adjusted. When the ambient light is low When it is dark, the brightness of the screen is automatically dimmed, thereby solving the problem of cumbersome operation of the screen brightness adjustment method of the mobile terminal, which consumes the user's time, reduces the power saving efficiency, causes unnecessary power consumption and reduces the service life of the screen, and saves the user Time, improve the power saving efficiency, reduce the power consumption of power saving, and improve the service life of the screen.

Description of drawings

FIG. 1 is a flowchart for realizing a screen power saving method provided by an embodiment of the present invention;

FIG. 2 is a flow chart of the specific implementation of step S103 of the screen power saving method provided by the embodiment of the present invention;

Fig. 3 is a better structural block diagram of the query list provided by the embodiment of the present invention;

Fig. 4 is a better implementation flowchart in practical application provided by the embodiment of the present invention;

FIG. 5 is a structural block diagram of a screen power saving device provided by an embodiment of the present invention.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, 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, not to limit the present invention.

In the embodiment of the present invention, the brightness value of each pixel in the image is obtained, and the ambient brightness of the mobile terminal is determined according to the brightness value of each pixel; the mobile terminal is adjusted according to the ambient brightness of the mobile terminal. The screen brightness of the mobile terminal avoids the situation that the user cannot see the content displayed on the screen when the ambient light is bright or dark. When the ambient light is bright, the screen brightness is automatically adjusted. When the ambient light is low When it is dark, the brightness of the screen is automatically dimmed, thereby solving the problem of cumbersome operation of the screen brightness adjustment method of the mobile terminal, which consumes the user's time, reduces the power saving efficiency, causes unnecessary power consumption and reduces the service life of the screen, and saves the user Time, improve the power saving efficiency, reduce the power consumption of power saving, and improve the service life of the screen.

Example 1

Figure 1 shows the implementation process of a screen power saving method provided by an embodiment of the present invention, which is described in detail as follows:

In step S101, when the screen of the mobile terminal is in a bright screen state, collecting an image of the environment where the mobile terminal is located;

In this embodiment, when the screen of the mobile terminal is in the bright screen state, an image containing the usage environment of the mobile terminal is obtained. Specifically, the screen in the bright screen state is used as a trigger condition. When the process of the system application is monitored, To judge whether the screen of the mobile terminal is in the bright screen state, when it is detected that the capacitive touch screen is lighted up, it means that the screen is in the bright screen state, that is, an image including the use environment of the mobile terminal is acquired.

In this embodiment, an image including the environment in which the mobile terminal is used is acquired. Specifically, an image including the environment in which the mobile terminal is used can be acquired through an imaging device located on the mobile terminal. The lens of the imaging device captures the image at a fixed frame rate, and the The data of the image is saved in the buffer, which is convenient for the subsequent mobile terminal to extract the brightness value of the pixel in the image.

As a preferred embodiment of the present invention, collecting images of the environment where the mobile terminal is located includes:

The image of the environment where the mobile terminal is located is collected every preset time.

The preset time can be the default of the system, or can be set by the user, and there is no limitation here.

The brightness value of each pixel is extracted from the acquired image until the capacitive touch screen meets the preset stop reset condition.

In step S102, acquire the brightness value of each pixel in the image, and determine the ambient brightness of the mobile terminal according to the brightness value of each pixel;

In this embodiment, obtaining the brightness value of each pixel in the image includes:

In the acquired image, convert the red component, green component and blue component (red, green, blue, RGB) of each pixel into hue, saturation and brightness values (Hue, saturation, value, HSV);

Get the brightness value of each pixel.

In this embodiment, in the acquired image, the red component, the green component and the blue component of each pixel are acquired, and the RGB of each pixel is converted into HSV. Wherein, converting the RGB color space to the HSV color space is a prior art, and details are not described here.

In this embodiment, the luminance value of each pixel is extracted, recorded and stored in the form of a matrix, so that the luminance value can be called directly later.

In this embodiment, in the acquired image, the luminance value of each pixel in the image is acquired until the screen of the mobile terminal is in an off state.

In this embodiment, determining the ambient brightness of the mobile terminal according to the brightness value of each pixel includes:

The acquired brightness values of each pixel are added and divided by the number of pixels to generate the ambient brightness of the mobile terminal.

In this embodiment, the acquired luminance values of each pixel are added through a preset addition function to generate a total luminance value.

In this embodiment, the number of pixels can be obtained by obtaining the resolution of the image. For example, when the resolution of the image is 1920*1080, it means that the number of pixels in the image is 2073600.

In this embodiment, the total brightness value is divided by the number of pixels to generate ambient brightness.

In this embodiment, the ambient brightness is generated by dividing the total brightness value by the number of pixels, and the obtained ambient brightness has higher accuracy due to the large number of pixels that take values.

In step S103, the brightness of the screen of the mobile terminal is adjusted according to the brightness of the environment of the mobile terminal.

In this embodiment, FIG. 2 shows the specific implementation process of step S103, which is described in detail as follows:

In step S201, query the brightness range to which the ambient brightness belongs in a preset query list according to the ambient brightness, and the query list includes a plurality of brightness ranges and preset brightness;

In this embodiment, a query list is established by synthesizing the results of various environments. The query list includes multiple brightness ranges and preset brightness, and each brightness range corresponds to a preset brightness.

In step S202, according to the pre-established correspondence between the brightness range and the preset brightness, the preset brightness corresponding to the brightness range to which the ambient brightness belongs is acquired;

In step S203, the brightness of the screen is adjusted to a preset brightness.

In this embodiment, within a preset time, according to the pre-established brightness value of the corresponding relationship between the brightness range and the preset brightness, query the brightness range to which the ambient brightness belongs, so as to obtain the preset brightness corresponding to the brightness range . Specifically, as shown in Figure 3 is a query list, C to D, E to F, G to F, I to J represent each frequency range respectively, K to L, M to N, O to P, Q to R represent respectively For each brightness range, when the obtained brightness range is x ₁ , it can be obtained by looking up the table, x ₁ belongs to the range from C to D, and the corresponding preset brightness is y ₁ . At this time, the brightness of the screen is adjusted to the preset brightness y ₁ .

In this embodiment, for the sake of illustration, take a practical application as an example. When the screen of the mobile device is turned on, the camera is turned on. Every 3 seconds, the software acquires one frame of the image data captured by the camera, and then converts each The RGB of the pixel is converted to HSV (the value of V in HSV represents the brightness value of the pixel), and the brightness values of all pixels in a frame are obtained, and the ambient brightness of each pixel in the frame is calculated. Look up the table to get the preset brightness corresponding to the ambient brightness, and then adjust the brightness of the screen to the preset brightness, thus avoiding the situation that the user cannot clearly see the content displayed on the screen when the ambient light is bright or the ambient light is dark , when the ambient light is bright, the screen brightness is automatically adjusted, and when the ambient light is dark, the screen brightness is automatically dimmed, no need to increase hardware, reduce costs, and no manual adjustment by the user to reduce power consumption and improve mobile terminals battery life.

In this embodiment, before acquiring the preset brightness corresponding to the brightness range to which the ambient brightness belongs according to the pre-established correspondence between the brightness range and the preset brightness, the steps include:

A corresponding relationship between the brightness range and the preset brightness is established and recorded for storage.

As a preferred embodiment of the present invention, before collecting the image of the environment where the mobile terminal is located, it includes:

Read system time and user-specified time period.

When the time period arrives, the step of collecting images of the environment where the mobile terminal is located is performed.

In this embodiment, for the sake of illustration, taking the actual application as an example, when the time period selected by the user is morning, noon, afternoon, and evening, that is, from 6:00 am to 12:00 pm, and from 6:00 am to 12:00 pm The step of collecting images of the environment in which the mobile terminal is located is carried out in the early morning, and the step of collecting images of the environment in which the mobile terminal is located is not performed in the early morning, so as to reduce power consumption and improve the battery life of the mobile terminal.

Example 2

As a preferred embodiment of the present invention, FIG. 4 shows a flow chart of a better implementation of the embodiment of the present invention in practical applications, and is described in detail as follows:

In step S401, the mobile terminal lights up the screen;

In step S402, the camera acquires an image;

In step S403, the middle HSV is calculated according to the image;

In step S404, the ambient brightness is calculated according to the V value;

In step S405, query the preset brightness corresponding to the ambient brightness in the query list;

In step S406, the brightness of the screen is adjusted according to the preset brightness.

Example 3

Figure 5 shows a structural block diagram of a screen power saving device provided by an embodiment of the present invention, which can run on various terminals equipped with camera equipment, including but not limited to mobile phones, pocket computers (Pocket Personal Computer, PPC), palm Computer, computer, laptop, personal digital assistant (PersonalDigitalAssistant, PDA), MP4, MP3, etc. For ease of description, only the parts related to this embodiment are shown.

Referring to Figure 5, the screen power saving device includes:

The first acquiring unit 51 is configured to acquire an image of the environment where the mobile terminal is located when the screen of the mobile terminal is in a bright screen state;

The second acquisition unit 52 is configured to acquire the brightness value of each pixel in the image, and determine the ambient brightness of the mobile terminal according to the brightness value of each pixel;

The adjustment unit 53 is configured to adjust the brightness of the screen of the mobile terminal according to the brightness of the environment of the mobile terminal.

Further, the first acquisition unit is further configured to acquire images of the environment where the mobile terminal is located.

Further, in the screen power saving device, the second acquisition unit includes:

The conversion subunit is used to convert the red component, green component and blue component of each pixel into hue, saturation and brightness values in the acquired image;

Obtain subunits, used to obtain the brightness value of each pixel.

Further, in the screen power saving device, the adjustment unit includes:

generating a subunit for adding the obtained brightness values of each pixel and dividing by the number of pixels to generate ambient brightness;

Further, in the screen power saving device, the adjustment unit includes:

The query subunit is used to query the brightness range to which the ambient brightness belongs in the preset query list according to the ambient brightness, and the query list includes a plurality of brightness ranges and preset brightness;

The second acquiring subunit is configured to acquire the preset brightness corresponding to the brightness range to which the ambient brightness belongs according to the pre-established correspondence between the brightness range and the preset brightness;

The adjustment subunit is used to adjust the brightness of the screen to a preset brightness.

In the embodiment of the present invention, the brightness value of each pixel in the image is obtained, and the ambient brightness of the mobile terminal is determined according to the brightness value of each pixel; the mobile terminal is adjusted according to the ambient brightness of the mobile terminal. The screen brightness of the mobile terminal avoids the situation that the user cannot see the content displayed on the screen when the ambient light is bright or dark. When the ambient light is bright, the screen brightness is automatically adjusted. When the ambient light is low When it is dark, the brightness of the screen is automatically dimmed, thereby solving the problem of cumbersome operation of the screen brightness adjustment method of the mobile terminal, which consumes the user's time, reduces the power saving efficiency, causes unnecessary power consumption and reduces the service life of the screen, and saves the user Time, improve the power saving efficiency, reduce the power consumption of power saving, and improve the service life of the screen.

The device provided by the embodiment of the present invention can be applied in the above-mentioned corresponding method embodiments 1 and 2. For details, refer to the description of the above-mentioned embodiments 1 and 2, which will not be repeated here.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (6)

1. A screen power-saving method, characterized in that, comprising: When the screen of the mobile terminal is in a bright screen state, collecting an image of the environment where the mobile terminal is located; Acquiring the brightness value of each pixel in the image, and determining the ambient brightness of the mobile terminal according to the brightness value of each pixel; adjusting the screen brightness of the mobile terminal according to the ambient brightness of the mobile terminal; When the screen of the mobile terminal is in a bright screen state, the image of the environment where the mobile terminal is collected is specifically: The screen is in the bright screen state as a trigger condition, by monitoring the process of the system application program, to determine whether the screen of the mobile terminal is in the bright screen state, when the capacitive touch screen is monitored to be lit, it means that the screen is in the bright screen state That is, to obtain an image containing the usage environment of the mobile terminal; Wherein, the brightness value of each pixel in the image is obtained, and the ambient brightness of the mobile terminal is determined according to the brightness value of each pixel, specifically: Convert the red component, green component and blue component (red, green, blue, RGB) of each pixel to hue, saturation and brightness value (Hue, saturation, value, HSV), and each obtained pixel The luminance values of the dots are added and divided by the number of the pixel dots to generate the ambient luminance of the mobile terminal. 2. The method according to claim 1, wherein collecting the image of the environment where the mobile terminal is located comprises: The image of the environment where the mobile terminal is located is collected every preset time. 3. The method according to claim 1, wherein adjusting the screen brightness of the mobile terminal according to the ambient brightness of the mobile terminal comprises: According to the ambient brightness in the preset query list, query the brightness range to which the ambient brightness belongs, and the query list includes a plurality of brightness ranges and preset brightness; Acquiring a preset brightness corresponding to the brightness range to which the ambient brightness belongs according to the pre-established correspondence between the brightness range and the preset brightness; Adjust the brightness of the screen to the preset brightness. 4. A screen power saving device, characterized in that it comprises: A first acquiring unit, configured to acquire an image of the environment where the mobile terminal is located when the screen of the mobile terminal is in a bright screen state; The second acquisition unit is configured to acquire the brightness value of each pixel in the image, and determine the ambient brightness of the mobile terminal according to the brightness value of each pixel; an adjusting unit, configured to adjust the screen brightness of the mobile terminal according to the ambient brightness of the mobile terminal; When the screen of the mobile terminal is in a bright screen state, the image of the environment where the mobile terminal is collected is specifically: The screen is in the bright screen state as a trigger condition, and the process of the system application program is monitored to determine whether the screen of the mobile terminal is in the bright screen state. That is, to obtain an image containing the usage environment of the mobile terminal; Wherein, the brightness value of each pixel in the image is obtained, and the ambient brightness of the mobile terminal is determined according to the brightness value of each pixel, specifically: Convert the red component, green component and blue component (red, green, blue, RGB) of each pixel to hue, saturation and brightness value (Hue, saturation, value, HSV), and each obtained pixel The luminance values of the dots are added and divided by the number of the pixel dots to generate the ambient luminance of the mobile terminal. 5. The device according to claim 4, wherein the adjusting unit comprises: The query subunit is used to query the brightness range to which the ambient brightness belongs in the preset query list according to the ambient brightness, and the query list includes a plurality of brightness ranges and preset brightness; The second acquiring subunit is configured to acquire the preset brightness corresponding to the brightness range to which the ambient brightness belongs according to the pre-established correspondence between the brightness range and the preset brightness; The adjustment subunit is used to adjust the brightness of the screen to a preset brightness. 6. A mobile terminal, characterized by comprising the screen power saving device according to any one of claims 4 to 5.