CN116364006A

CN116364006A - Display method and device

Info

Publication number: CN116364006A
Application number: CN202111632731.4A
Authority: CN
Inventors: 刘唱
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2023-06-30

Abstract

The disclosure relates to a display method and a display device. Relates to the field of display control, and solves the problem of display color cast caused by a low gray scale mode. The method comprises the following steps: acquiring chromaticity information corresponding to a display area under target brightness under the current brightness, wherein the target brightness is the display brightness to be achieved; and maintaining the current brightness, and adjusting the output display of the display area according to the chromaticity information so that the display effect of the display area is the same as the display effect of the display area under the target brightness. The technical scheme provided by the disclosure is suitable for a screen low-brightness display scene, and a DC dimming scheme with high precision and high display effect is realized.

Description

Display method and device

Technical Field

The disclosure relates to the field of display control, and in particular relates to a display method and device.

Background

The display effect of the electronic screen has great influence on the user experience, and the dimming performance is one of important performances of the electronic screen. Particularly, after AMOLED technology is widely applied to electronic devices such as smart phones, tablet computers, etc., a dimming manner in which a Pulse Width Modulation (PWM) dimming technology is used in combination with a DC dimming technology has been applied by many manufacturers.

In a scene with lower screen brightness, the DC dimming technology usually adopts a mode of low gray scale under fixed brightness to dim light, so that the problems of color cast and the like are easy to occur in the scene with low brightness, the performance of the TFT is greatly influenced, and even the use in a normal scene is influenced.

Disclosure of Invention

In order to overcome the problems in the related art, the present disclosure provides a display method and apparatus for adjusting display output according to chromaticity information to achieve a brightness reduction effect.

According to a first aspect of an embodiment of the present disclosure, there is provided a display method, including:

acquiring chromaticity information corresponding to a display area under target brightness under the current brightness, wherein the target brightness is the display brightness to be achieved;

and maintaining the current brightness, and adjusting the output display of the display area according to the chromaticity information so that the display effect of the display area is the same as the display effect of the display area under the target brightness.

Preferably, before the step of obtaining the chromaticity information corresponding to the display area under the target brightness, the method further includes:

and under the critical brightness, acquiring chromaticity information corresponding to each gray level, wherein the critical brightness is a brightness node for switching the screen brightness adjusting mode.

Preferably, the step of obtaining the chromaticity information corresponding to each gray level includes:

detecting color coordinates of at least one color corresponding to different gray scales under the critical brightness;

and acquiring chromaticity information of each gray level according to the color coordinates.

Preferably, the step of obtaining chromaticity information of each gray level according to the color coordinates includes:

a conversion matrix M from the color coordinates to the chromaticity information ₁ Acquiring chromaticity information of each gray level; wherein, the liquid crystal display device comprises a liquid crystal display device,

M ₁ ＝[w _r R,w _g G,w _b B] ^-1 ，

w _r 、w _g 、w _b the R, G, B values are different color components for the color coordinates of the different colors.

Preferably, the step of obtaining the chromaticity information corresponding to the display area under the target brightness includes:

acquiring gray scales corresponding to the target brightness;

and acquiring chromaticity information corresponding to the display area under the target brightness according to the color coordinates of the gray scale.

Preferably, the step of obtaining the gray scale corresponding to the target brightness includes:

according to the target brightness Lv _ideal And acquiring the gray scale corresponding to the target brightness according to the corresponding relation of the gray scale:

wherein Lv _ideal For the target brightness, lv _W255 And (3) for the highest gray scale under the critical brightness, gray is the gray scale.

Preferably, the step of obtaining the chromaticity information corresponding to each gray level further includes:

and generating a display lookup table according to the color coordinates and the chromaticity information of each gray level under the critical brightness, wherein the display lookup table comprises at least one item, and each item comprises the corresponding relation between the color coordinates and the chromaticity information of the same gray level.

Preferably, the step of obtaining the corresponding chromaticity information according to the color coordinates of the gray scale includes:

and searching the display lookup table according to the gray scale color coordinates corresponding to the target brightness, and obtaining the chromaticity information corresponding to the target brightness.

Preferably, before the step of obtaining the chromaticity information corresponding to the display area under the target brightness under the current brightness, the method further includes:

acquiring input brightness according to the received dimming order;

and obtaining target brightness according to the relation of at least one integer gray scale close to the input brightness.

According to a first aspect of embodiments of the present disclosure, there is provided a display device including:

the chromaticity acquisition module is used for acquiring chromaticity information corresponding to a display area under the target brightness under the current brightness, wherein the target brightness is the display brightness required to be achieved;

and the brightness adjustment display module is used for keeping the current brightness, and adjusting the output display of the display area according to the chromaticity information so that the display effect of the display area is the same as the display effect of the display area under the target brightness.

Preferably, the apparatus further comprises:

the chromaticity detection module is used for obtaining chromaticity information corresponding to each gray level under the critical brightness, wherein the critical brightness is a brightness node for switching the screen brightness adjustment mode.

Preferably, the chromaticity detection module includes:

the gray scale chroma detection submodule is used for detecting color coordinates of at least one color corresponding to different gray scales under the critical brightness;

and the chromaticity analysis sub-module is used for acquiring chromaticity information of each gray level according to the color coordinates.

Preferably, the colorimetric analysis submodule is used for converting the color coordinate into the conversion matrix M of the colorimetric information ₁ Acquiring chromaticity information of each gray level; wherein, the liquid crystal display device comprises a liquid crystal display device,

M ₁ ＝[w _r R,w _g G,w _b B] ^-1 ，

Preferably, the chromaticity acquisition module includes:

a gray scale acquisition sub-module, configured to acquire a gray scale corresponding to the target brightness;

and the chromaticity information acquisition sub-module is used for acquiring chromaticity information corresponding to the display area under the target brightness according to the color coordinates of the gray scale.

Preferably, the gray-scale obtaining sub-module is configured to, according to the target brightness Lv _ideal And acquiring the gray scale corresponding to the target brightness according to the corresponding relation of the gray scale:

Preferably, the chromaticity detection module further includes:

and the table generation sub-module is used for generating a display lookup table according to the color coordinates and the chromaticity information of each gray level under the critical brightness, wherein the display lookup table comprises at least one entry, and each entry comprises the corresponding relation between the color coordinates and the chromaticity information of the same gray level.

Preferably, the chrominance information obtaining sub-module is configured to search the display lookup table according to the color coordinates of the gray scale corresponding to the target luminance, and obtain chrominance information corresponding to the target luminance.

Preferably, the apparatus further comprises:

the input brightness acquisition module is used for acquiring input brightness according to the received dimming order;

and the target brightness acquisition module is used for acquiring target brightness according to the relation of at least one integer gray scale close to the input brightness.

According to a third aspect of embodiments of the present disclosure, there is provided a computer apparatus comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to:

According to a fourth aspect of embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, which when executed by a processor of a mobile terminal, causes the mobile terminal to perform a display method, the method comprising:

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects: firstly, when the brightness of a screen needs to be adjusted to reach target brightness, acquiring chromaticity information corresponding to a display area under the target brightness under the current brightness; and then maintaining the current brightness, and adjusting the output display of the display area according to the chromaticity information so that the display effect of the display area is the same as the display effect of the display area under the target brightness. According to the chromaticity information, the display output is accurately adjusted, the brightness change effect is achieved, the display effect is guaranteed, the display color cast problem caused by a low gray scale mode is solved, and the DC dimming scheme with high precision and high display effect is achieved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

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

Fig. 1 is a flow chart illustrating a display method according to an exemplary embodiment.

Fig. 2 is a flow chart illustrating yet another display method according to an exemplary embodiment.

Fig. 3 is a flow chart illustrating yet another display method according to an exemplary embodiment.

Fig. 4 is a flowchart illustrating yet another display method according to an exemplary embodiment.

Fig. 5 is a flowchart illustrating yet another display method according to an exemplary embodiment.

Fig. 6 is a block diagram of a display device according to an exemplary embodiment.

Fig. 7 is a block diagram illustrating yet another display device according to an exemplary embodiment.

Fig. 8 is a block diagram of the chrominance detection module 603, shown according to an exemplary embodiment.

Fig. 9 is a block diagram illustrating a chromaticity acquisition module 601 according to an exemplary embodiment.

Fig. 10 is a block diagram illustrating yet another chrominance detection module 603 according to an exemplary embodiment.

Fig. 11 is a block diagram illustrating yet another display device according to an exemplary embodiment.

Fig. 12 is a block diagram of an apparatus according to an example embodiment.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.

In a scene with lower screen brightness, the DC dimming technology usually adopts a mode of low gray scale under fixed brightness to dim light, so that the problems of color cast and the like are easy to occur in a low-brightness scene, the performance of the TFT is greatly influenced, and even the use in a normal scene is influenced.

An exemplary embodiment of the present disclosure further provides a display method, a flow of adjusting screen brightness using the method is shown in fig. 1, including:

and 101, acquiring chromaticity information corresponding to a display area under the target brightness under the current brightness.

The target brightness is the display brightness to be achieved, and specifically, the target brightness can be the brightness indicated by the instruction for adjusting the screen brightness. The instructions may be generated in response to a user operation after detecting the user operation, such as a user dragging a target brightness indicated by the brightness adjustment bar; the instructions indicating that the screen display brightness is changed to the target brightness may also be automatically generated by the system, for example, based on the ambient brightness change detected by the light sensor.

The target brightness is lower than the critical brightness, so that the hardware parameters of the screen brightness are not changed any more under the critical brightness, and the screen brightness is kept to work in the DC brightness adjusting mode. The brightness adjustment of the target brightness is converted into the adjustment of the output value of each color component matched with the target brightness display effect, so that the effect of brightening or darkening the image is realized through color adjustment under the condition that the hardware brightness parameter is unchanged.

The current brightness is specifically the screen hardware brightness, and preferably can be the critical brightness or lower than the critical brightness.

And 102, maintaining the current brightness, and adjusting the output display of the display area according to the chromaticity information.

In the step, the output display is adjusted according to the obtained output chromaticity information, the chromaticity information comprises the values of all color components, and the effect of changing the image display brightness under the condition that the screen hardware brightness is unchanged is achieved by adjusting the color components. Specifically, in the display area, for example, the color coordinates corresponding to the target luminance are r=0, g=0, and b=0 according to each color component in the chromaticity information, and the corresponding chromaticity information is r=1, g=1, and b=1 according to the processing of step 201 or the lookup table 1, and the output display of the display area is adjusted using the chromaticity information as the output information, so that the change in brightness of the image display effect is realized by changing the image color.

The exemplary embodiment of the disclosure also provides a display method, which establishes association correspondence between different gray scales and chromaticity information, so that in the process of DC brightness adjustment, the gray scales can be mapped according to target brightness, and then the gray scales can be further mapped to the chromaticity information, brightness can be accurately adjusted, real presentation of display contents such as colors is ensured, and the display effect in a low-brightness scene is improved.

Firstly, determining the switching brightness of the screen brightness adjustment modes of the screen DC dimming and the PWM dimming as the critical brightness. Can be determined by the jetta function test waveform in MP 410.

And then, obtaining chromaticity information corresponding to each gray level under the critical brightness, wherein the critical brightness is a brightness node for switching the screen brightness adjusting mode. As shown in fig. 2, the method comprises:

step 201, detecting color coordinates of at least one color corresponding to different gray scales under the critical brightness.

In this step, after determining the critical luminance, the luminance values of R255 (saturation of red at the luminance), G255 (saturation of green at the luminance), B255 (saturation of blue at the luminance), and the color coordinates (specifically, R, G, B three colors) of at least one color corresponding to each gray scale from 0 to 255 gray scales (W0, W1, …, W255) are measured at the critical luminance.

And 202, acquiring chromaticity information of each gray level according to the color coordinates.

In this step, chromaticity information is obtained by conversion according to the color coordinates, and the chromaticity information contains the values of the respective color components, and the color of the output display is controlled. The color of the output display is changed by adjusting the respective color component values in the chromaticity information to achieve the effect of visually darkening or brightening the screen without changing the actual screen brightness (screen power/current/voltage).

For example, from the measured values of R255, G255, B255, W255, as shown in expression 1, the color coordinates of each gray level W are obtained:

W＝w _r R+w _g G+w _b b, expression 1

Wherein R is preferably R255, G is preferably G255, and B is preferably B255, thereby calculating w _r ，w _g ，w _b I.e. the color coordinates of W.

The color coordinates of any gray level can be expressed as expression 2:

wherein C is _XYZ C is the input of gray-scale color display _RGB Is chrominance information.

A conversion matrix M of the color coordinates to the chromaticity information can be established according to expression 3 ₁ ：

M ₁ ＝[w _r R,w _g G,w _b B] ^-1 Expression 3

Wherein w is _r 、w _g 、w _b The R, G, B values are different color components for the color coordinates of the different colors. Specifically, R is R255, G is G255, and B is B255. And determining the proportion of each color component under a certain gray scale display effect through the color coordinates and the color components.

An exemplary embodiment of the present disclosure further provides a display method, when adjusting screen brightness according to target brightness, capable of obtaining output chromaticity information through gray-scale color coordinates, as shown in fig. 3, including:

step 301, obtaining gray scales corresponding to the target brightness.

And determining the corresponding relation between the target brightness and the gray scale according to the expression 4, and obtaining the gray scale corresponding to the target brightness. Gamma correction is performed on the critical luminance measurement values, that is, luminance correction is performed on 0-255 gray scale of each color according to the measured luminance of the gamut vertices R255, G255, B255.

Wherein Lv _ideal For the target brightness, lv _W255 And for the highest gray scale under the critical brightness, gray is the gray scale corresponding to the target brightness.

And 302, acquiring chromaticity information corresponding to the display area under the target brightness according to the gray scale color coordinates.

In this step, chromaticity information corresponding to the display area under the target brightness can be obtained according to the color coordinates and the conversion matrix.

An exemplary embodiment of the present disclosure further provides a display method, which generates a 3d_lut display lookup table according to an association relationship between color coordinates and chromaticity information, and when brightness is switched subsequently, the lookup table can determine chromaticity information corresponding to the color coordinates, thereby further improving efficiency of a brightness adjustment process.

As shown in fig. 4, step 401 and step 402 are the same as steps 201 to 202 in fig. 2, and are not described here again.

Step 403, generating a display lookup table according to the color coordinates and chromaticity information of each gray level under the critical brightness.

The display lookup table comprises at least one entry, and each entry comprises the corresponding relation between the color coordinates and the chromaticity information of the same gray level.

In this step, in order to further improve the efficiency of converting the gray-scale input into the output of the chromaticity information, a display lookup table may be constructed through the 3d_lut, simplifying the brightness adjustment process.

Specifically, the conversion matrix M calculated in step 402 can be used ₁ Chromaticity information corresponding to the color coordinates of each gray level is calculated, and a 3d_lut display lookup table is formed.

Table 1 shows a display lookup table in which the correspondence between the input color coordinates and the output chromaticity information is recorded in the entries corresponding to each row, and r_in, g_in, b_in correspond to the color coordinates of red, green, and blue, respectively; r_out, G_out and B_out correspond to actual values of red, green and blue components in the output chromaticity information respectively.

TABLE 1

R_in	G_in	B_in	R_out	G_out	B_out
						0	0	0	1	1	1
1	1	1	1	1	1
						2	2	2	1	1	1
3	3	3	7	7	7
						4	4	4	9	9	9
5	5	5	10	10	10
						6	6	6	13	13	13
7	7	7	14	14	14
						8	8	8	15	15	15
9	9	9	16	16	16
						10	10	10	17	17	17
11	11	11	18	18	18
						12	12	12	19	19	19
13	13	13	19	19	19
						14	14	14	20	20	20
15	15	15	21	21	21
						16	16	16	22	22	22

After the display lookup table is generated, in step 302, the display lookup table may be searched according to the color coordinates of the gray scale corresponding to the target brightness, so as to obtain the chromaticity information corresponding to the target brightness.

For example, the 3d_lut display lookup table for each row is denoted by the numeral B of 0 to 256 in the display lookup table, corresponding to each row of 3d_lut, respectively.

The DC dimming range typically includes steps 0-440.

According to expression 5, the correspondence between B and the dimming order (DBV) can be calculated:

b=dbv×k+b, expression 5

Where k represents the slope and b represents the intercept, which can be derived from the test values in step 201.

The DBV may be generated according to an operation instruction to adjust brightness, for example, the DBV is generated according to a sliding of a brightness bar.

An exemplary embodiment of the present disclosure further provides a display method, where when the current brightness is a critical brightness of a switching node between a PWM dimming mode and a DC dimming mode, an instruction for indicating the target brightness is obtained, and display output adjustment is performed under a condition that the brightness of screen hardware is unchanged, so as to achieve an effect of screen brightness change.

First, after the target brightness is obtained, determining the gray scale corresponding to the target brightness, and obtaining the color coordinates of each color under the gray scale. The target brightness is preferably a value between 2nit and the critical brightness, and is within a brightness interval applicable to the PWM dimming mode in the hardware-adjusted brightness.

Then, each color coordinate is taken as input, and according to the conversion matrix M ₁ Processing the color coordinates yields the output chromaticity information, or the output chromaticity information is quickly determined by a lookup table in the case where a 3d_lut table such as table 1 has been generated. For example, referring to table 1, when the color coordinates are r_in=10, g_in=10, and b_in=10, the obtained chromaticity information is r_out=17, g_out=17, and b_out=17.

After the chromaticity information is obtained, the output display can be adjusted according to the value of each color component contained in the chromaticity information, and the output color is changed through the change of the color component, so that the effect of darkening or brightening the image on the visual display effect is achieved.

In the process of searching the display lookup table in step 302, if the gray scale of the input brightness is not an integer, the lookup table cannot be directly performed with the input brightness as the target brightness, and the target brightness is required to be obtained through processing, as shown in fig. 5, which includes:

step 501, obtaining input brightness according to the received dimming order.

In this step, B is calculated from expression 5, and B is used as the input luminance. In the case where B is a non-integer, the look-up table cannot be directly looked up by B, and further processing is required to obtain the corresponding integer gray scale, in particular, step 402.

Step 502, obtaining target brightness according to at least one integer gray scale relation close to the input brightness.

In this step, the target brightness Lv can be calculated according to the formula 6 _B ：

Wherein m and n are two integer gray scales closest to B, n>B>m；Lv _n And Lv _m Respectively corresponding to the n-level gray scale and the m-level gray scale.

The target brightness Lv can be obtained by carrying out equal proportion interpolation on the m and the n _B 。

An exemplary embodiment of the present disclosure also provides a display device having a structure as shown in fig. 6, including:

the chromaticity acquisition module 601 is configured to acquire chromaticity information corresponding to a display area under a target luminance under a current luminance, where the target luminance is a display luminance to be achieved;

and the brightness adjustment display module 602 is configured to maintain the current brightness, and adjust the output display of the display area according to the chromaticity information, so that the display effect of the display area is the same as the display effect of the display area under the target brightness.

Preferably, the structure of the device is as shown in fig. 7, and further comprising:

the chromaticity detection module 603 is configured to obtain chromaticity information corresponding to each gray level under a critical luminance, where the critical luminance is a luminance node at which a screen luminance adjustment mode is switched.

Preferably, the structure of the chrominance detection module 603 is as shown in fig. 8, and includes:

a gray-scale chromaticity detection sub-module 801, configured to detect color coordinates of at least one color corresponding to different gray scales under the critical brightness;

and the chromaticity analysis sub-module 802 is configured to obtain chromaticity information of each gray level according to the color coordinates.

Preferably, the colorimetric analysis submodule 802 is configured to convert the color coordinate into the transformation matrix M of the colorimetric information ₁ Acquiring chromaticity information of each gray level; wherein, the liquid crystal display device comprises a liquid crystal display device,

M ₁ ＝[w _r R,w _g G,w _b B] ^-1 ，

Preferably, the chromaticity acquisition module 601 has a structure as shown in fig. 9, and includes:

a gray level obtaining sub-module 901, configured to obtain a gray level corresponding to the target brightness;

and the chrominance information obtaining sub-module 902 is configured to obtain chrominance information corresponding to the display area under the target brightness according to the color coordinates of the gray scale.

Preferably, the gray-scale obtaining sub-module 901 is configured to, according to the target brightness Lv _ideal And acquiring the gray scale corresponding to the target brightness according to the corresponding relation of the gray scale:

Preferably, the structure of the chrominance detection module 603 is as shown in fig. 10, and further includes:

the table generating sub-module 803 is configured to generate a display lookup table according to the color coordinates and the chromaticity information of each gray level under the critical brightness, where the display lookup table includes at least one entry, and each entry includes a correspondence between the color coordinates and the chromaticity information of the same gray level.

Preferably, the chrominance information obtaining sub-module 902 is configured to search the display lookup table according to the color coordinates of the gray scale corresponding to the target luminance, and obtain the chrominance information corresponding to the target luminance.

Preferably, the structure of the device is as shown in fig. 11, and further comprising:

an input brightness acquisition module 604, configured to acquire input brightness according to the received dimming order;

the target brightness obtaining module 605 is configured to obtain a target brightness according to a relation of at least one integer gray scale close to the input brightness.

The device can be integrated in electronic equipment with a display screen, such as a smart phone, a tablet personal computer and the like, and the electronic equipment can realize corresponding functions.

The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.

Fig. 12 is a block diagram illustrating an apparatus 1200 for display according to an example embodiment. For example, apparatus 1200 may be a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, exercise device, personal digital assistant, or the like.

Referring to fig. 12, apparatus 1200 may include one or more of the following components: a processing component 1212, a memory 1204, a power component 1206, a multimedia component 1208, an audio component 1120, an input/output (I/O) interface 1212, a sensor component 1214, and a communications component 1216.

The processing component 1212 generally controls overall operation of the apparatus 1200, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing assembly 1212 may include one or more processors 1220 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 1212 can include one or more modules that facilitate interactions between the processing component 1212 and other components. For example, the processing component 1212 may include a multimedia module to facilitate interaction between the multimedia component 1208 and the processing component 1212.

Memory 1204 is configured to store various types of data to support operations at device 1200. Examples of such data include instructions for any application or method operating on the apparatus 1200, contact data, phonebook data, messages, pictures, videos, and the like. The memory 1204 may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), 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 or optical disk.

Power component 1206 provides power to the various components of device 1200. The power components 1206 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the apparatus 1200.

The multimedia component 1208 includes a screen between the device 1200 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 1208 includes a front camera and/or a rear camera. The front camera and/or the rear camera may receive external multimedia data when the device 1200 is in an operational mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 1120 is configured to output and/or input audio signals. For example, audio component 1120 includes a Microphone (MIC) configured to receive external audio signals when device 1200 is in an operational mode, such as a call mode, a recording mode, and a speech recognition mode. The received audio signals may be further stored in the memory 1204 or transmitted via the communications component 1216. In some embodiments, audio component 1120 also includes a speaker for outputting audio signals.

The I/O interface 1212 provides an interface between the processing assembly 1212 and a peripheral interface module, which may be a keyboard, click wheel, button, or the like. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly 1214 includes one or more sensors for providing status assessment of various aspects of the apparatus 1200. For example, the sensor assembly 1214 may detect the on/off state of the device 1200, the relative positioning of the components, such as the display and keypad of the apparatus 1200, the sensor assembly 1214 may also detect a change in position of the apparatus 1200 or one of the components of the apparatus 1200, the presence or absence of user contact with the apparatus 1200, the orientation or acceleration/deceleration of the apparatus 1200, and a change in temperature of the apparatus 1200. The sensor assembly 1214 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 1214 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1214 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communications component 1216 is configured to facilitate communication between the apparatus 1200 and other devices, either wired or wireless. The apparatus 1200 may access a wireless network based on a communication standard, such as WiFi,2G, or 3G, or a combination thereof. In one exemplary embodiment, the communication component 1216 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communications component 1216 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the apparatus 1100 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for executing the methods described above.

In an exemplary embodiment, a non-transitory computer-readable storage medium is also provided, such as memory 1204, comprising instructions executable by processor 1220 of apparatus 1200 to perform the above-described method. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

An exemplary embodiment of the present disclosure also provides a computer apparatus, including:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to:

An exemplary embodiment of the present disclosure also provides a non-transitory computer-readable storage medium, which when executed by a processor of a mobile terminal, causes the mobile terminal to perform a display method, the method comprising:

The disclosure provides a display method, firstly, when the brightness of a screen needs to be adjusted to reach the target brightness, obtaining chromaticity information corresponding to a display area under the target brightness under the current brightness; and then maintaining the current brightness, and adjusting the output display of the display area according to the chromaticity information so that the display effect of the display area is the same as the display effect of the display area under the target brightness. According to the chromaticity information, the display output is accurately adjusted, the display effect is ensured while the brightness change is realized, the display color cast problem caused by the low gray scale mode is solved, and the DC dimming scheme with high precision and high display effect is realized.

Because gray scale adjustment is performed in the dimension of the color, the adjustable order is increased from the original 255 order to 255 x 3 orders, which can be independently adjusted for all three colors of RGB, so that the dimming precision is improved.

The method simplifies the calculation mode of the 3D_LUT while ensuring the effect, can directly look up the table to acquire the chromaticity information and display and output the chromaticity information according to the chromaticity information, and shortens the response time of brightness adjustment.

R, G, B is adjusted separately, so that the chromaticity is not changed on the basis of changing the brightness, and the color development effect under low brightness is ensured.

The LED display screen can be applied to an OLED screen, and the use experience of a user in a light weak environment such as at night is greatly improved.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

1. A display method, comprising:

2. The display method according to claim 1, wherein before the step of obtaining the chromaticity information corresponding to the display area under the target brightness, the method further comprises:

3. The display method according to claim 2, wherein the step of acquiring chromaticity information corresponding to each gray level includes:

4. A display method according to claim 3, wherein the step of acquiring chromaticity information for each gray level based on the color coordinates comprises:

M ₁ ＝[w _r R，w _g G，w _b B] ^-1 ，

5. The display method according to claim 3, wherein the step of acquiring chromaticity information corresponding to the display area at the target luminance includes:

acquiring gray scales corresponding to the target brightness;

6. The display method according to claim 5, wherein the step of obtaining the gray scale corresponding to the target brightness comprises:

7. The display method according to claim 5, wherein the step of acquiring chromaticity information corresponding to each gray level further comprises:

8. The display method according to claim 7, wherein the step of acquiring chromaticity information corresponding to the display area at the target luminance according to the gray-scale color coordinates includes:

9. The display method according to claim 1, wherein before the step of obtaining the chromaticity information corresponding to the display area under the target luminance at the current luminance, the method further comprises:

acquiring input brightness according to the received dimming order;

10. A display device, comprising:

11. The display device of claim 10, wherein the device further comprises:

12. The display device of claim 11, wherein the chromaticity detection module comprises:

13. The display device of claim 12, wherein the display device comprises a display device,

the chromaticity analysis submodule is used for converting the color coordinates into a conversion matrix M of the chromaticity information ₁ Acquiring chromaticity information of each gray level; wherein, the liquid crystal display device comprises a liquid crystal display device,

M ₁ ＝[w _r R，w _g G，w _b B] ^-1 ，

14. The display device of claim 12, wherein the chromaticity acquisition module comprises:

15. The display device of claim 14, wherein the display device comprises a display device,

the gray level acquisition sub-module is used for acquiring the target brightness Lv according to the target brightness Lv _ideal And acquiring the gray scale corresponding to the target brightness according to the corresponding relation of the gray scale:

16. The display device of claim 14, wherein the chromaticity detection module further comprises:

17. The display device of claim 16, wherein the display device comprises,

and the chromaticity information obtaining sub-module is used for searching the display lookup table according to the gray scale color coordinates corresponding to the target brightness to obtain chromaticity information corresponding to the target brightness.

18. The display device of claim 10, wherein the device further comprises:

19. A computer apparatus, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to:

20. A non-transitory computer readable storage medium, which when executed by a processor of a mobile terminal, causes the mobile terminal to perform a display method, the method comprising: