CN111796783A

CN111796783A - Display screen color calibration method, device and medium

Info

Publication number: CN111796783A
Application number: CN202010535202.1A
Authority: CN
Inventors: 吕金库; 单梁; 刘肇楠; 郭瑞
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2020-10-20

Abstract

The disclosure relates to a method, an apparatus, and a medium for color calibration of a display screen. The method comprises the following steps: responding to a color calibration instruction, carrying out color calibration test on a display screen of the electronic equipment through a built-in sensor of the electronic equipment and acquiring response color information; determining calibration values for the display screen based on the optical display parameters of the display screen and the response color information; and changing the color configuration of the display screen according to the calibration value. According to the embodiment of the invention, the color calibration is carried out on one or more display screens in the electronic equipment by using the built-in sensor, so that the simple calibration operation process, low cost and good effect are ensured.

Description

Display screen color calibration method, device and medium

Technical Field

The present disclosure relates to a calibration method, and more particularly, to a color calibration method, device and medium for a display screen.

Background

In the related art, a CCD (Charge Coupled Device) sensor or a CMOS (Complementary Metal Oxide Semiconductor) sensor is commonly used to calibrate the color of the display screen of the electronic Device. Generally, the sensors are external measuring devices independent of the electronic device, and need to be connected to the electronic device through a data line, and need to be fixed to a display screen of the electronic device through a fixing device to obtain original color information of a test image in the electronic device. When the sensors are used for calibrating the color of the display screen, the proximity between the sensors and the display screen needs to be ensured until no light leakage exists on the display screen, and the sensors need to be provided with separate data connection equipment and a power supply.

In the related art, there is also a technical solution of implementing color calibration of a display screen by incorporating a CCD sensor in a single-screen notebook-type electronic device. However, if the electronic device has a plurality of screens, it is not possible to perform color calibration tests on the plurality of display screens one by one using the unique built-in CCD sensor and to modify the color configuration parameters of the plurality of display screens one by one. The unique built-in CCD sensor can not realize the synchronous calibration of the colors of a plurality of screens in the same electronic equipment.

Therefore, the existing display screen color calibration method is complex in implementation process and single in implementation environment and needs to be further improved.

Disclosure of Invention

In order to overcome the problems in the related art, the present disclosure provides a method, an apparatus, and a medium for calibrating display screen colors, which implement simple, efficient, and user-friendly synchronous calibration of one or more display screen colors by building a unique color calibration sensor in an electronic device.

According to a first aspect of the embodiments of the present disclosure, there is provided a display screen color calibration method, including: the method is applied to the electronic equipment, responds to a color calibration instruction, performs color calibration test on a display screen of the electronic equipment through a built-in sensor of the electronic equipment and acquires response color information; determining a calibration value of the display screen based on the optical display parameters and the response color information of the display screen; and changing the color configuration of the display screen according to the calibration value.

In one embodiment, an electronic device includes a first display screen and a second display screen; responding to a color calibration instruction, performing color calibration test on a display screen of the electronic equipment through a built-in sensor and acquiring response color information, wherein the color calibration instruction comprises the following steps: responding to the first color calibration instruction, performing color calibration test on the first display screen through the built-in sensor, and acquiring first response color information; and/or responding to a second color calibration instruction, performing color calibration test on the second display screen through the built-in sensor, and acquiring second response color information.

In one embodiment, before responding to the first and/or second color calibration instructions, the method further comprises: displaying prompt information for starting calibration through the first display screen or the second display screen, and generating a first color calibration instruction and/or a second color calibration instruction according to user response of the prompt information; wherein, the prompt message includes: responding to a device instruction or a user instruction, and displaying prompt information for starting to calibrate the first display screen on the first display screen or the second display screen; or responding to a prompt instruction of finishing the first color calibration instruction, and displaying prompt information for starting to calibrate the second display screen on the first display screen or the second display screen.

In one embodiment, in response to a color calibration instruction, performing a color calibration test on a display screen of an electronic device through a built-in sensor and acquiring response color information includes: providing standard color information for the display screen in response to the color calibration instruction; displaying a test pattern on a display screen based on the standard color information; and calling the built-in sensor to carry out color calibration test on the display screen and obtaining response color information of the display screen.

In yet another embodiment, determining calibration values for the display screen based on the optical display parameters and the responsive color information comprises: adjusting the response color information of the first display screen based on optical display parameters of the first display screen and the second display screen in the electronic equipment, and determining a calibration value of the first display screen; or adjusting the response color information of the second display screen based on the optical display parameters of the first display screen and the second display screen in the electronic device, and determining the calibration value of the second display screen.

In another embodiment, altering the color configuration of the display screen based on the calibration value comprises: burning the calibration value into a drive board code of the display screen; and re-driving the display screen, reading the drive board code of the display screen, and changing the color configuration of the display screen according to the drive board code of the display screen.

In another embodiment, the built-in sensor in the electronic device is a CCD sensor or a CMOS sensor.

In another embodiment, the built-in sensor is detachably connected with the electronic device main body; the sensor performs a color calibration test on the second display screen in a manner of being detached from the electronic apparatus main body.

According to a second aspect of the embodiments of the present disclosure, there is provided a display screen color calibration apparatus, including: the response unit is used for responding to the color calibration instruction, performing color calibration test on a display screen of the electronic equipment through the built-in sensor and acquiring response color information; a determination unit that determines a calibration value of the display screen based on the optical display parameter and the response color information; and the configuration unit is used for changing the color configuration of the display screen according to the calibration value.

In one embodiment, an electronic device includes a first display screen and a second display screen; the response unit further comprises a first response unit and a second response unit, and the first response unit is used for responding to the first color calibration instruction, performing color calibration test on the first display screen through the built-in sensor and acquiring first response color information; and the second response unit is used for responding to the second color calibration instruction, performing color calibration test on the second display screen through the built-in sensor and acquiring second response color information.

In one embodiment, the response unit may be further configured to display a prompt to start calibration via the first display screen and the second display screen before responding to the first and second color calibration instructions, and generate the first and/or second color calibration instructions according to a user response to the prompt; wherein, the prompt message includes: responding to a device instruction or a user instruction, and displaying prompt information for starting to calibrate the first display screen on the first display screen or the second display screen; or responding to a prompt instruction of finishing the first color calibration instruction, and displaying prompt information for starting to calibrate the second display screen on the first display screen or the second display screen.

In one embodiment, the response unit is further operable to: providing standard color information for the display screen in response to the color calibration instruction; displaying a test pattern on a display screen based on the standard color information; and calling the built-in sensor to carry out color calibration test on the display screen and obtaining response color information of the display screen.

In yet another embodiment, the determining unit may be further configured to: adjusting the response color information of the first display screen based on optical display parameters of the first display screen and the second display screen in the electronic equipment, and determining a calibration value of the first display screen; or adjusting the response color information of the second display screen based on the optical display parameters of the first display screen and the second display screen in the electronic device, and determining the calibration value of the second display screen.

In yet another embodiment, the configuration unit may be further configured to: burning the calibration value into a drive board code of the display screen; and re-driving the display screen, reading the drive board code of the display screen, and changing the color configuration of the display screen according to the drive board code of the display screen.

According to a third aspect of the embodiments of the present disclosure, there is provided a display screen color calibration apparatus including: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to perform the display screen color calibration method in the first aspect or any one of the embodiments of the first aspect.

According to a fourth aspect of embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium comprising: the instructions in the storage medium, when executed by a processor of a mobile electronic device, enable the mobile electronic device to perform the display screen color calibration method of the first aspect or any one of the embodiments of the first aspect.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: 1) the CCD sensor or the CMOS sensor built in the electronic equipment can calibrate the color of a display screen with known display type and test conditions in the electronic equipment based on the instruction of the electronic equipment, does not need to select the display screen type and the backlight mode thereof and preheat the display screen, does not need to change the ambient light intensity, does not need to be connected with external equipment or carry out fixed operation, has simple and convenient calibration steps and better user experience; the built-in calibration equipment enables the sensor to be free of additional equipment such as a power supply and the like, and equipment configuration is simplified; in the test process, because additional test equipment does not need to be purchased, and additional devices such as a programmer and the like do not need to be purchased in the process of burning the calibration value, the unnecessary cost is reduced; the good test environment is ensured, so that the test effect is more accurate; 2) the same sensor equipment is used for carrying out color calibration on the first display screen and the second display screen, so that the problem that calibration results of the first display screen and the second display screen cannot be mutually adapted due to the use of different optical parameters can be avoided, and the calibration accuracy is improved; 3) the color display based on the optical display parameter calibration of the first display screen and the second display screen enables the display effect after the display screen calibration to be displayed according to the user requirement, and a plurality of different display screens on the same electronic equipment have the same visual display effect, so that the calibration process is simplified, and the user experience is improved.

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 present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a flowchart illustrating a display screen color calibration method according to an exemplary embodiment of the present disclosure.

Fig. 2 is a schematic diagram illustrating a single screen display color calibration apparatus according to an exemplary embodiment of the present disclosure.

Fig. 3 is a schematic diagram illustrating a dual screen display color calibration apparatus according to yet another exemplary embodiment of the present disclosure.

FIG. 4 is a flow chart illustrating a method of obtaining response color information for a display screen color calibration according to an exemplary embodiment of the present disclosure.

Fig. 5 is an apparatus block diagram illustrating a display screen color calibration apparatus according to an exemplary embodiment of the present disclosure.

Fig. 6 is an apparatus block diagram illustrating a display screen color calibration apparatus according to still another exemplary embodiment of the present disclosure.

Fig. 7 is a block diagram illustrating a structure of a display screen color calibration apparatus according to an exemplary embodiment of the present disclosure.

Detailed Description

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

The display screen color calibration method provided by the embodiment of the disclosure is applied to electronic equipment which is internally provided with a color calibration sensor and comprises one or more display screens. Fig. 1 is a flowchart illustrating a display screen color calibration method according to an exemplary embodiment of the present disclosure, where the display screen color calibration method is used in an electronic device, as shown in fig. 1, and includes the following steps.

In step S11, in response to the color calibration instruction, a color calibration test is performed on the display screen of the electronic device through a built-in sensor of the electronic device and response color information is acquired.

After the electronic equipment acquires a color calibration instruction sent by an application program, the color calibration instruction is transmitted to a built-in sensor for color calibration. The color calibration instructions involved in embodiments of the present disclosure may be user triggered. For example, a user enters a trigger calibration instruction color in the electronic device through an optical calibration program. The calibration instructions may also be instructions issued by periodic reminders by the device. For example, the device automatically initiates a calibration operation when it recognizes that a preset calibration time has come.

In the embodiment of the disclosure, the built-in sensor performs the color calibration test on the display screen after receiving the color calibration instruction. The built-in sensor can automatically start color calibration test on the display screen within a period of time after the instruction is acquired according to the acquired color calibration instruction, and at the moment, if the equipment environment of the display screen can meet the test condition, the tested color data of the display screen is accurate. It is contemplated that the built-in sensor may also initiate a color calibration test for the display screen based on the received device signal, for example, the built-in sensor may initiate a test based on the received device signal indicating a snap-fit condition, or the built-in sensor may initiate a test based on the received user operation.

After the test is finished, the built-in sensor converts an optical signal into an electric signal according to the photoelectric conversion characteristic of the built-in sensor, and stores the color information of the test pattern captured in the test in the form of the electric signal. The color information of the test pattern captured by the built-in sensor is response color information.

In step S12, a calibration value for the display screen is determined based on the display screen optical display parameters and the response color information.

After the electronic device acquires the response color information of the display screen, the response color information can be directly used as a calibration value of the display screen, and the color configuration of the display screen is modified through the calibration value.

However, when the display screen itself has certain optical display parameters, such as default display brightness, color saturation, etc., of the display screen, the response color information obtained by the internal sensor may be adjusted according to the optical display parameters, such as brightness, saturation, etc., in the display color information, so as to obtain the calibration value for calibrating the screen color.

Adjusting the response color information by the optical display parameters of the display screen comprises two different color adjustment means.

The first method is to adjust the corresponding response color information of the display screen according to the optical display parameters of the display screen, so that the electronic device cannot mistakenly identify that the response color information acquired by the built-in sensor is the color information when the display screen is in a standard state. For example, when the user adjusts the brightness parameter in the optical display parameters of the display screen to 80%, the response color information acquired by the built-in sensor is necessarily darker than the standard color information, for example, the standard red test pattern (255, 0, 0) in RGB format is recognized as a darker color (195, 30, 30), at this time, if the electronic device determines the calibration value according to the response color information (195, 30, 30), the calibrated display screen indeed displays the standard red test pattern as the standard red without changing the optical parameters, but after calibration, if the user adjusts the optical display parameters to 100, the information displayed by the standard red test pattern may be too bright. Therefore, when the electronic device adjusts the response color information of the display screen, the electronic device refers to its own optical display parameters. For example, when the brightness parameter in the optical display parameters is 80%, the response color information (195, 30, 30) acquired by the built-in sensor is adjusted to be higher in brightness (245, 5, 5) based on the brightness parameter, and then the color rendering offset caused by the aging and other problems of the display screen can be represented more accurately by generating the calibration value based on the adjusted response color information, and the color rendering offset caused by the optical display parameters is not included. By adopting the method to calibrate the display screen in the electronic equipment, more accurate color correction and better user experience can be ensured.

The second is only applicable to the case where there are multiple display screens in an electronic device and both display screens are calibrated in one calibration process. At this time, the response color information of one of the two display screens can be further adjusted according to the difference of the optical display parameters between the two display screens to obtain a final calibration value, and after the two display screens are respectively subjected to color configuration change by using the two calibration values of the two display screens, the display effects of the two display screens can be synchronized. For example, when the electronic device sets a difference between the display brightness parameters of the first display screen and the second display screen, the response color information of one of the display screens is further modified, so that the display brightness of the two display screens is consistent.

In step S13, the color configuration of the display screen is changed according to the calibration value.

After obtaining the calibration values for calibrating the screen colors, the display screen may calibrate the original color configuration to adjust the display colors. In the process, the built-in sensor transmits the calibration value to the electronic equipment, and the electronic equipment burns the calibration value into the drive board code of the display screen, so that the display configuration of the display screen can be changed and the calibration can be completed when the display screen is re-driven and the drive board code is read.

The display screen color calibration method according to the embodiment will be described below with reference to practical applications.

In the embodiment of the present disclosure, the electronic device may include one or more display screens, and if the electronic device includes only one display screen, the color calibration test is performed only on one display screen, and the color configuration of the display screen is modified according to the display requirement; if the electronic device comprises a plurality of display screens, the color calibration test can be simultaneously performed on the plurality of display screens, and the color configuration of the plurality of display screens is synchronized, so that the display screens have the same display effect.

Fig. 2 is a schematic diagram illustrating a single screen display color calibration apparatus according to an exemplary embodiment of the present disclosure. As shown in fig. 2, the first display 11 is located on the side B of the electronic device such as a notebook computer, and the built-in sensor 21 is located on the side C of the notebook computer device. After the notebook computer equipment finishes the folding operation, the first display screen 11 and the built-in sensor 21 can be buckled, and the built-in sensor 21 is positioned in the closed space where the notebook computer shell is positioned, so that the tightness of the test environment is ensured, and the intensity of the ambient light is smaller than a certain threshold value.

It should be noted that when the CCD sensor or the CMOS sensor is used to test the display screen, the intensity of the ambient light must be below a certain range to ensure the accuracy of the data obtained during the test. In order to ensure the accuracy of the color calibration, before the built-in sensor 21 performs the test operation, the environment of the device is generally ensured to meet the test condition.

Specifically, the equipment environment of the first display screen 11 meets the test condition that the equipment completes the folding operation, that is, the first display screen 11 and the built-in sensor 21 are in the buckling state at this time, and in the closed space of the notebook, the ambient light acquired by the built-in sensor 21 is very little.

In another embodiment of the present disclosure, when the electronic device responds to the first color calibration instruction, the color calibration test may be performed on the first display screen 11 through the built-in sensor 21 and the first response color information is obtained; and when the electronic device responds to the second color calibration instruction, the color calibration test can be carried out on the second display screen 12 through the built-in sensor 21, and second response color information can be obtained.

Fig. 3 is a schematic diagram illustrating a dual screen display color calibration apparatus according to yet another exemplary embodiment of the present disclosure. Referring to fig. 3, in the embodiment of the present disclosure, the first display screen 11 is located on the side B of the notebook computer device, the second display screen 12 is located on the side C of the notebook computer device near the edge and leaves a space for the detachable built-in sensor 22, and the detachable built-in sensor 22 is located at the center of the side C of the notebook computer device.

In the dual-screen device, the electronic device can automatically detect information of a plurality of display screen hardware devices and prompt a user to detect in sequence. The default detection sequence is that after the electronic equipment is folded, the display screen buckled with the detachable built-in sensor 22 is used as the first display screen 11 for first detection; when the detachable built-in sensor 22 is removed from the electronic device and turned upside down, the screen capable of performing detection is used as the second display 12, and the second display 12 can be selected to be detected after the first display 11 is detected.

The detachable built-in sensor 22 in this embodiment can be detached from the electronic device and turned upside down on the second display 12 to fasten the second display 12 to the detachable built-in sensor 22 when performing the color calibration test on the second display 12. To ensure that the ambient light intensity is low, a suction cup may be optionally placed over the detachable on-sensor 22 so that the detachable on-sensor 22 is attached to the second display 12, or a light shield may be optionally placed over the detachable on-sensor 22 on the second display 12.

Different from the color calibration method of the single-screen display screen, the color calibration method of the double-screen display screen can finish the color calibration test of the first display screen 11 and add the color calibration test of the second display screen 12. By the double-screen correction method in the embodiment of the disclosure, the first display screen 11 and the second display screen 12 can obtain the same optical display parameters, and have the same or similar display effect after calibration. The specific way of calibrating the display is referred to in the following embodiments of the present disclosure.

In an embodiment of the present disclosure, the first color calibration instruction may be responded to by acquiring a device instruction or acquiring a user instruction, and before responding to the first color calibration instruction, prompt information for starting calibration may be displayed on the first display screen 11 or the second display screen 12 in the embodiment of the present disclosure, and the first color calibration instruction is generated according to a user response of the prompt information. The prompt message comprises: in response to a device instruction or a user instruction, a prompt message to start calibration of the first display screen 11 is displayed on the first display screen 11 or the second display screen 12.

In one embodiment, the electronic device defines a time constant, such as a year or half a year, and uses the time constant as a time parameter for automatically starting the calibration operation of the display screen. When an application program for optical calibration in the electronic device (hereinafter, referred to as an optical calibration program for short, and is usually pre-installed in the electronic device in a factory pre-installation manner without being installed by a user) recognizes that the time constant arrives, calibration work is automatically started and performed. At this time, the user of the electronic device may receive a calibration prompt issued by the optical calibration program on the first display screen 11 or the second display screen 12 to determine whether to start calibrating the first display screen 11, and if the user selects to start calibration, the optical calibration program may send a calibration instruction to the built-in sensor; if the user rejects the calibration, the optical calibration procedure will end the first color calibration command and proceed to the next step, where a prompt is displayed on the first display 11 or the second display 12 to start calibrating the second display 12.

In another embodiment, the user of the electronic device may also autonomously start the optical calibration application at random time and select to initiate calibration through the interface of the optical calibration application.

In another embodiment of the present disclosure, a prompt to start calibrating the second display 12 may be displayed on the first display 11 or the second display 12 by a prompt instruction in response to completion of the first color calibration instruction.

When the first color calibration command is completed, the electronic device is prompted to display a prompt for calibrating the second display 12. At this time, the optical calibration program may prompt the user on the first display screen 11 or the second display screen 12 that the user needs to calibrate the second display screen 12 at this time, and if the user selects to start calibration, the optical calibration program may send the calibration instruction to the built-in sensor.

Different from the first color calibration instruction, the second color calibration instruction is generated in such a way that, in the dual-screen electronic device, when the electronic device recognizes that the color calibration test of the first display screen 11 is completed, and at this time, the built-in sensor is in an idle state, the user is automatically prompted whether to start the test of the second display screen 12.

There are two possibilities for the first color calibration instruction to be completed. First, the first display screen 11 has completed the color calibration test for the first display screen 11 after responding to the first color calibration command. Secondly, after the first color calibration instruction is sent out, the user refuses to perform the color calibration test on the first display screen 11, and at this time, the optical calibration program skips the step of performing the color calibration test on the first display screen 11, and directly performs the color calibration test on the second display screen 12.

And displaying a prompt message of user operation for starting calibration of the first display screen 11 and the second display screen 12 on the first display screen 11 or the second display screen 12. Typically, this information may be in the form of a prompt box to allow selection by the user. For example, the user may choose to now turn on the color calibration test. After the user selects to start the color calibration test, the device responds to the user's confirmation operation and transmits a first color calibration command to the built-in sensor. If the user chooses to start the color calibration test later or to end the color calibration test for the display screen, the program will wait for a period of time or jump directly to the next step. For example, when the user chooses to cancel the test on the first display 11, the program will continue to prompt the user whether to initiate a color calibration test on the second display 12.

FIG. 4 is a flow chart illustrating a method of obtaining response color information for a display screen color calibration according to an exemplary embodiment of the present disclosure. As shown in fig. 4, the electronic device, in response to the color calibration command, performs a color calibration test on the display screen of the electronic device through the built-in sensor and acquires response color information, including the following steps.

In step S21, standard color information is provided to the display screen in response to the color calibration instruction.

When the electronic device issues a color calibration command, the calibration command includes standard color information for providing the display screen and using the standard color information in a color calibration test. The standard color information is pre-stored in the optical calibration program and is used for comparing the standard color information with the response color information after the response color information is acquired in the subsequent step.

The standard color information is original color information of the test pattern, for example, color value information in RGB or CMYK format or the like. Based on the standard color information, the display screen of the electronic device can recognize how the liquid crystal tube or the picture tube should be configured to display different colors on the display screen. The display screen can then display the standard color information with a slight offset based on its optical display parameters and the display performance of the components.

In step S22, a test pattern is displayed on the display screen based on the standard color information.

The display screen calls a test pattern stored in an optical calibration program pre-installed in the electronic device or a test pattern automatically generated according to preset parameters for testing. The criteria for the test pattern will be used in the calculation of the calibration values.

In step S23, the built-in sensor is called to perform a color calibration test on the display screen, and response color information of the display screen is obtained.

The built-in sensor tests a test pattern displayed in the display screen, and the built-in sensor can sample the test pattern for multiple times after receiving an instruction of the electronic equipment and acquire response color information according to sampling data. Generally, the response color information should include at least color values, test pattern numbers corresponding to the color values, coordinate positions, and the like.

Further, the response color information may be different due to differences in various parameters. Therefore, when the electronic devices of a plurality of display screens perform color calibration, the same built-in sensor is used, so that the parameters of the built-in sensor can be ensured to be unchanged. For example, when the built-in sensor acquires color information such as brightness and color of the first display panel 11 and the second display panel 12, the light sensitivity of the built-in sensor is not changed, and the output saturation characteristic, the dark output characteristic, the sensitivity, the dispersion and the like of the built-in sensor are fixed. In the manufacturing process of the sensor, when different sensors receive the same light intensity irradiation, the output photocurrents have slight differences, and the output color test results after the electrical signals are amplified are different. In the embodiment of the present disclosure, the same detachable built-in sensor 22 is used to test a plurality of display screens, so that the same optical parameters can be provided for a plurality of different display screens, and thus, no error occurs in the color calibration process of the first display screen 11 and the second display screen 12.

In an embodiment, it is ensured that the test means of the first display screen 11 and the second display screen 12 are the same by ensuring that the standard color information used when the first display screen 11 and the second display screen 12 are tested is the same, so that the test error in the test process is as small as possible.

In another embodiment, the accuracy of the response color information may be ensured by ensuring the uniformity of the test environment. Such as by reducing the difference in ambient light levels when the first display screen 11 and the second display screen 12 are respectively engaged with the detachable built-in sensor 22 to ensure the uniformity of the response color information.

In another embodiment, the display parameters of the first display screen 11 and the second display screen 12 are pre-adjusted during the manufacturing process of the electronic device. Because different screens may have display differences in the manufacturing process, display parameters of the screens can be adjusted through pre-debugging, so that the first display screen 11 and the second display screen 12 have the same color display effect before leaving the factory. During the adjustment process, the driver board code for one or more display screens may have been changed to a value different from the original code information. Thus in the color calibration method used in this disclosure, initial driver board code information for the display screen is recorded and used to calculate calibration values when modifying the color configuration information for the display screen.

In an embodiment, after the response color information is obtained, the electronic device compares the received response color information with the standard color information, and calculates a calibration value. Generally, the standard color information indicates the position of the test pattern in the color space, which is fixed, and the position of the test pattern in the color space obtained according to the response color information varies with the display state of the display, so that the response color information of the display with color difference is shifted from the fixed position of the standard color information. The system will calculate the offset based on the response color information and the standard color information and use this offset as a calibration value.

In yet another embodiment, determining calibration values for the display screen based on the optical display parameters and the responsive color information comprises: adjusting the response color information of the first display screen 11 based on the optical display parameters of the first display screen 11 and the second display screen 12 in the electronic device, and determining the calibration value of the first display screen 11; or, based on the optical display parameters of the first display screen 11 and the second display screen 12 in the electronic device, the response color information of the second display screen 12 is adjusted, and the calibration value of the second display screen 12 is determined.

At this time, after the electronic device acquires the response color information, it confirms the optical display parameters carried by the first display screen 11 and the second display screen 12, for example, the information of the brightness, the chromaticity, the saturation, and the like of the display screens. Since the optical display parameters of the first display screen 11 and the optical display parameters of the second display screen 12 may be different in the multi-screen electronic device. At this time, after the response color information of the display screen is modified according to the optical display parameters of each display screen, the response color information of one display screen is modified for the second time.

For example, the luminance of the first display screen 11 is 80%, and the luminance of the second display screen 12 is 50%. Due to the difference in optical display parameters, the first display screen 11 and the second display screen 12 have a very large brightness difference before calibration. A process of modifying the response color information once can ensure that the optical display parameters do not affect the calibration result, i.e. the first display screen 11 and the second display screen 12 still have the same brightness difference after the calibration. At this moment, can be according to the luminance difference value 80% -50% between 11 screens of first demonstration and the second display screen 12 obtain the luminance difference between two display screens 30%, and will respond color information further adjustment according to this luminance difference, make it have higher luminance when showing the colour, thereby can offset the not synchronous problem of the development of two display screens that 30% luminance difference value caused, not only provide renewed technical scheme for display screen colour calibration, and guaranteed good user experience.

In another embodiment of the present disclosure, changing the color configuration of the display screen according to the calibration value includes: burning the calibration value into a drive board code of the display screen; and re-driving the display screen, reading the drive board code of the display screen, and changing the color configuration of the display screen according to the drive board code of the display screen.

In the embodiment of the present disclosure, after the built-in sensor completes calibration, the calibration value is burned into a TCON Code (driver board Code) of the display screen to complete calibration. Generally, the display screen can select a driving board adapted to the display screen according to different types of the display screen, and program information burnt in the driving board can prompt the mode in which the display screen should be started. In general, the work of updating or burning the driver board code needs additional burning software and hardware programmer to complete. In this embodiment, for the convenience of calibration of the display screen, the related functions may be built in the electronic device motherboard. Therefore, when the optical calibration application recognizes that the built-in sensor completes calibration work, the burning software can be called, and the drive board code is updated by using the calibration data acquired by the built-in sensor.

When the display screen is restarted, a calibrated color display scheme is obtained according to the driver board codes, for example, the color display scheme can adjust the luminous efficiency of different colors in the display screen, for example, the voltage or current of a certain color light emitting diode is increased or decreased, so as to realize new color balance. After the calibrated color display scheme is obtained, the electronic device can calibrate the color of the display screen and calibrate the color offset of the display screen.

In another embodiment of the present disclosure, a color calibration test is performed on a display screen using a CCD sensor or a CMOS sensor.

However, the present disclosure is not limited to the use of a CCD sensor or a CMOS sensor. For example, a grating spectrophotometer or the like may also be used to perform color testing on the display screen device, and all sensors or optical elements with built-in conditions may be built into the electronic device and perform color calibration testing on the first display screen 11 and/or the second display screen 12.

In another embodiment of the present disclosure, the built-in sensor is detachably connected to the electronic device main body, and the sensor performs the color calibration test on the second display 12 in a manner of being detached from the electronic device main body.

Generally, a notebook-type electronic device that can be fastened includes an a-side, a B-side, a C-side, and a D-side. The surface A is the top surface when the electronic equipment is buckled, the surface B is the plane where the first display screen 11 is located, the surface C is located opposite to the surface B when the equipment is buckled, and the surface D is the bottom surface when the electronic equipment is buckled.

For testing the first display 11, the built-in sensor 21 is disposed opposite to the first display 11 when the electronic device is in the fastened state, and the optimal position is the center position of the first display 11, usually in the center of the keyboard of the electronic device. Meanwhile, the built-in sensor 21 can be built in the device, that is, in the process of hardware device integration, the shell where the device C surface is located can be recessed inwards and reserve enough positions for the small built-in sensor 21, and the upper surface of the built-in sensor 21 and the upper surface of the device C surface are located in the same plane, so that the built-in sensor 21 is not easily worn in the use process of the electronic device. In order to fix the built-in sensor 21, a fixed or movable card slot may be provided at an edge of the recess of the device case, and the built-in sensor 21 is clipped in the recess of the case. The built-in sensor 21 may also be built into the electronic device in any other conceivable way.

In addition, the built-in sensor can be detachably connected with the electronic device main body, which means that the sensor 22 can be taken out of the device shell in the multi-screen electronic device, so that the test on the second display screen 12 can be realized on the second display screen 12 in an inverted mode. At this time, although the detachable built-in sensor 22 can be taken out of the device case, the detachable built-in sensor 22 and the electronic device are still connected to each other by means of a data signal line and/or a power line. This can ensure that the power supply of the detachable built-in sensor 22 comes from the electronic device, and can ensure the transmission and reception of information such as color calibration instructions between the detachable built-in sensor 22 and the electronic device.

Based on the same conception, the embodiment of the disclosure also provides a display screen color calibration device.

It is understood that the display screen color calibration apparatus provided by the embodiments of the present disclosure includes hardware structures and/or software modules for performing the above functions. The disclosed embodiments can be implemented in hardware or a combination of hardware and computer software, in combination with the exemplary elements and algorithm steps disclosed in the disclosed embodiments. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

Fig. 5 is an apparatus block diagram illustrating a display screen color calibration apparatus according to an exemplary embodiment of the present disclosure. Referring to fig. 5, the apparatus 300 includes a response unit 301, a determination unit 302, and a configuration unit 303.

A response unit 301 configured to perform a color calibration test on a display screen of the electronic device through a built-in sensor of the electronic device and acquire response color information in response to the color calibration instruction; a determination unit 302 configured to determine calibration values of the display screen based on the optical display parameters and the response color information of the display screen; a configuration unit 303 configured to change the color configuration of the display screen according to the calibration value.

Fig. 6 is an apparatus block diagram illustrating a display screen color calibration apparatus according to still another exemplary embodiment of the present disclosure. Referring to fig. 6, the apparatus 300 may further include a first display screen 11 and a second display screen 12; the response unit 301 further includes a first response unit 304 and a second response unit 305, and the first response unit 304 is configured to perform a color calibration test on the first display screen 11 through a built-in sensor in response to a first color calibration instruction, and acquire first response color information; and a second response unit 305, configured to perform a color calibration test on the second display screen 12 through the built-in sensor in response to the second color calibration instruction, and obtain second response color information.

In one embodiment, the response unit 301 may be further configured to display a prompt message for starting calibration through the first display 11 or the second display 12 before responding to the first and second color calibration instructions, and generate the first and/or second color calibration instructions according to a user response of the prompt message; wherein, the prompt message includes: displaying a prompt message for starting to calibrate the first display screen 11 on the first display screen 11 or the second display screen 12 in response to a device instruction or a user instruction; or, in response to a prompt instruction for completion of the first color calibration instruction, a prompt message to start calibrating the second display screen 12 is displayed on the first display screen 11 or the second display screen 12.

In one embodiment, the response unit 301 is further configured to: providing standard color information for the display screen in response to the color calibration instruction; displaying a test pattern on a display screen based on the standard color information; and calling the built-in sensor to carry out color calibration test on the display screen and obtaining response color information of the display screen.

In yet another embodiment, the determining unit 302 may be further configured to: adjusting the response color information of the first display screen 11 based on the optical display parameters of the first display screen 11 and the second display screen 12 in the electronic device, and determining the calibration value of the first display screen 11; or, based on the optical display parameters of the first display screen 11 and the second display screen 12 in the electronic device, the response color information of the second display screen 12 is adjusted, and the calibration value of the second display screen 12 is determined.

In another embodiment, the configuration unit 303 is further configured to: burning the calibration value into a drive board code of the display screen; and re-driving the display screen, reading the drive board code of the display screen, and changing the color configuration of the display screen according to the drive board code of the display screen.

In another embodiment, the built-in sensor is detachably connected with the electronic device main body; the sensor performs a color calibration test on the second display 12 in such a manner as to be detached from the electronic apparatus main body.

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

Fig. 7 is a block diagram illustrating an apparatus 400 for display screen color calibration according to an exemplary embodiment of the present disclosure. For example, the apparatus 400 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a medical device, an exercise device, a personal digital assistant, and the like.

Referring to fig. 7, the apparatus 400 may include one or more of the following components: a processing component 402, a memory 404, a power component 406, a multimedia component 408, an audio component 410, an interface for input/output (I/O) 412, a sensor component 414, and a communication component 416.

The processing component 402 generally controls overall operation of the apparatus 400, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 402 may include one or more processors 420 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 402 can include one or more modules that facilitate interaction between the processing component 402 and other components. For example, the processing component 402 can include a multimedia module to facilitate interaction between the multimedia component 408 and the processing component 402.

The memory 404 is configured to store various types of data to support operations at the device 400. Examples of such data include instructions for any application or method operating on the device 400, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 404 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 disks.

Power components 406 provide power to the various components of device 400. Power components 406 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for apparatus 400.

The multimedia component 408 includes a screen that provides an output interface between the device 400 and the user. 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 an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 408 includes a front facing camera and/or a rear facing camera. The front-facing camera and/or the rear-facing camera may receive external multimedia data when the device 400 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 a focal length and optical zoom capability.

The audio component 410 is configured to output and/or input audio signals. For example, audio component 410 includes a Microphone (MIC) configured to receive external audio signals when apparatus 400 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 404 or transmitted via the communication component 416. In some embodiments, audio component 410 also includes a speaker for outputting audio signals.

The I/O interface 412 provides an interface between the processing component 402 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor component 414 includes one or more sensors for providing various aspects of status assessment for the apparatus 400. For example, the sensor component 414 can detect the open/closed state of the device 400, the relative positioning of components, such as a display and keypad of the apparatus 400, the sensor component 414 can also detect a change in the position of the apparatus 400 or a component of the apparatus 400, the presence or absence of user contact with the apparatus 400, orientation or acceleration/deceleration of the apparatus 400, and a change in the temperature of the apparatus 400. The sensor assembly 414 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. In some embodiments, the sensor assembly 414 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 416 is configured to facilitate wired or wireless communication between the apparatus 400 and other devices. The apparatus 400 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 416 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 416 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 400 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, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 404 comprising instructions, executable by the processor 420 of the apparatus 400 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

It is further understood that the use of "a plurality" in this disclosure means two or more, as other terms are analogous. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It will be further understood that the terms "first," "second," and the like are used to describe various information and that such information should not be limited by these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.

It is further to be understood that while operations are depicted in the drawings in a particular order, this is not to be understood as requiring that such operations be performed in the particular order shown or in serial order, or that all illustrated operations be performed, to achieve desirable results. In certain environments, multitasking and parallel processing may be advantageous.

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

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A display screen color calibration method is applied to an electronic device, and comprises the following steps:

responding to a color calibration instruction, carrying out color calibration test on a display screen of the electronic equipment through a built-in sensor of the electronic equipment and acquiring response color information;

determining calibration values for the display screen based on the optical display parameters of the display screen and the response color information;

and changing the color configuration of the display screen according to the calibration value.

2. The display screen color calibration method of claim 1, wherein the electronic device comprises a first display screen and a second display screen;

the responding to the color calibration instruction, performing color calibration test on the display screen of the electronic equipment through the built-in sensor and acquiring responding color information, including:

responding to a first color calibration instruction, performing color calibration test on the first display screen through the built-in sensor, and acquiring first response color information; and/or the presence of a gas in the gas,

and responding to a second color calibration instruction, performing color calibration test on the second display screen through the built-in sensor, and acquiring second response color information.

3. The display screen color calibration method of claim 2, wherein prior to responding to the first and/or second color calibration instructions, the method further comprises: displaying prompt information for starting calibration through the first display screen or the second display screen, and generating the first and/or second color calibration instruction according to user response of the prompt information;

wherein the prompt message includes:

responding to a device instruction or a user instruction, and displaying prompt information for starting to calibrate the first display screen on the first display screen or the second display screen; alternatively, the first and second electrodes may be,

and responding to a prompt instruction of finishing the first color calibration instruction, and displaying prompt information for starting to calibrate the second display screen on the first display screen or the second display screen.

4. The display screen color calibration method according to claim 1, wherein the performing a color calibration test on the display screen of the electronic device and acquiring response color information through the built-in sensor in response to the color calibration command comprises:

providing standard color information for the display screen in response to the color calibration instructions;

displaying a test pattern on the display screen based on the standard color information;

and calling the built-in sensor to carry out color calibration test on the display screen, and obtaining response color information of the display screen.

5. The display screen color calibration method of claim 2, wherein said determining calibration values for the display screen based on the optical display parameters and the response color information comprises:

adjusting the response color information of a first display screen based on optical display parameters of the first display screen and a second display screen in the electronic equipment, and determining a calibration value of the first display screen; alternatively, the first and second electrodes may be,

and adjusting the response color information of the second display screen based on the optical display parameters of the first display screen and the second display screen in the electronic equipment, and determining the calibration value of the second display screen.

6. The display screen color calibration method according to claim 1, wherein the changing the color configuration of the display screen according to the calibration value comprises:

burning the calibration value into a drive board code of the display screen;

and re-driving the display screen, reading the drive board code of the display screen, and changing the color configuration of the display screen according to the drive board code of the display screen.

7. The display screen color calibration method of claim 1, comprising:

the built-in sensor in the electronic equipment is a CCD sensor or a CMOS sensor.

8. The display screen color calibration method according to any one of claims 2 to 7, comprising:

the built-in sensor is detachably connected with the electronic equipment main body;

the sensor performs a color calibration test on the second display screen in a manner of being detached from the electronic device main body.

9. A display screen color calibration device, applied to an electronic device, includes:

the response unit is used for responding to a color calibration instruction, carrying out color calibration test on a display screen of the electronic equipment through a built-in sensor of the electronic equipment and acquiring response color information;

a determination unit that determines a calibration value of the display screen based on the optical display parameter of the display screen and the response color information;

and the configuration unit is used for changing the color configuration of the display screen according to the calibration value.

10. The display screen color calibration apparatus of claim 9, wherein the electronic device comprises a first display screen and a second display screen;

the response unit further includes a first response unit and a second response unit, and,

the first response unit is used for responding to a first color calibration instruction, performing color calibration test on the first display screen through the built-in sensor and acquiring first response color information; and/or the presence of a gas in the gas,

and the second response unit is used for responding to a second color calibration instruction, performing color calibration test on the second display screen through the built-in sensor and acquiring second response color information.

11. The display screen color calibration apparatus of claim 10, wherein the response unit is further configured to display a prompt to start calibration via the first display screen or the second display screen before responding to the first and second color calibration instructions, and to generate the first and/or second color calibration instructions based on a user response to the prompt;

wherein the prompt message includes:

12. The display screen color calibration apparatus of claim 9, wherein the response unit is further operable to:

13. The display screen color calibration apparatus of claim 10, wherein the determination unit is further operable to:

14. The display screen color calibration apparatus of claim 9, wherein the configuration unit is further operable to:

burning the calibration value into a drive board code of the display screen;

15. The display screen color calibration apparatus of claim 9, comprising:

16. A display screen color calibration device according to any one of claims 10 to 15, comprising:

17. A display screen color calibration device, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to: performing the display screen color calibration method of any one of claims 1-8.

18. A non-transitory computer readable storage medium having instructions therein, which when executed by a processor of a mobile terminal, enable the mobile terminal to perform a display screen color calibration method, the method comprising:

enabling a mobile terminal to perform the display screen color calibration method according to any one of claims 1-8.