CN111599325A - Portable device, display device and calibration method of display device - Google Patents

Abstract

The invention proposes a portable device, which includes a proximity sensor, a communication module and a processor. The proximity sensor is used to sense the distance between the portable device and the display panel of the display device. The communication module is used to communicate with the display device. The processor is coupled to the proximity sensor and the communication module, and is used to decide whether to start the correction process according to the distance sensed by the proximity sensor, and after starting the correction process, trigger the display device through the communication module to cause the display panel of the display device to Display test image. In addition, a display device and a calibration method of the display device are also proposed in the present invention.

Description

Portable device, display device and calibration method of display device

technical field

The present invention relates to a display color calibration technology, and more particularly, to a portable device, a display device and a calibration method for the display device.

Background technique

Due to the physical characteristics of each display unit in the monitor, the color of the picture displayed by the monitor will gradually deviate from the standard after long-term use. At this time, it is necessary to perform color calibration of the monitor to correct the color deviation of the monitor. At present, most of the monitor color correctors sold on the market are connected to a color corrector equipped with a photosensitive element through the Universal Serial Bus (USB), and the monitor can be calibrated only by matching with appropriate software or programs. However, although the color correction process using a commercially available monitor color corrector is quite simple, it requires additional expensive hardware to assist.

SUMMARY OF THE INVENTION

In view of this, the embodiments of the present invention aim to provide a portable device, a display device, and a color calibration method for the display device, which can complete the display calibration through the cooperation of the portable device and the display device, with high convenience and high Accuracy.

A portable device according to an embodiment of the present invention includes a proximity sensor, a communication module, and a processor. The proximity sensor is used to sense the distance between the portable device and the display panel of the display device. The communication module is used for communicating with the display device. The processor is coupled to the proximity sensor and the communication module for determining whether to start the calibration process according to the distance sensed by the proximity sensor, and triggers the display device through the communication module after the calibration process is activated to enable the display panel of the display device A test image is displayed.

The calibration method for a display device according to an embodiment of the present invention is applicable to a portable device, and includes the following steps: sensing a distance between the portable device and a display panel of the display device; and determining whether to activate the calibration according to the sensed distance and triggering the display device after the calibration process is started, so that the display panel of the display device displays the test image.

A display device according to an embodiment of the present invention includes a display panel, a communication module, and a processor. The display panel is used for displaying the test image according to the display setting. The communication module is used for receiving optical sensing data corresponding to the test image from the portable device. The processor is coupled to the display panel and the communication module for correcting the display setting of the display panel according to the test image and the optical sensing data.

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, the following embodiments are given and described in detail with the accompanying drawings as follows.

Description of drawings

FIG. 1 is a schematic diagram of a calibration method of a display device according to an embodiment of the present invention.

FIG. 2 is a schematic block diagram of a calibration system according to an embodiment of the present invention.

FIG. 3 is a schematic block diagram of a calibration system according to an embodiment of the present invention.

FIG. 4 is a schematic block diagram of a calibration system according to an embodiment of the present invention.

FIG. 5 is a schematic block diagram of a calibration system according to an embodiment of the present invention.

FIG. 6 is a flowchart of a calibration method of a display device according to an embodiment of the present invention.

FIG. 7 is a flowchart of a calibration method of a display device according to an embodiment of the present invention.

reference number

100: Portable Devices

110, 210: Processor

120: Proximity sensor

130, 230: Communication module

140: Storage element

200: Display device

220: Display panel

240: Non-volatile memory

d: distance

S610, S620, S630, S640, S650, S660, S670, S675, S680, S690: steps of the calibration method of the display device

S _c , S _DATA , _SIMG , _ST : Signals

Detailed ways

FIG. 1 is a schematic diagram of a calibration method of a display device according to an embodiment of the present invention; FIG. 2 is a schematic block diagram of a calibration system according to an embodiment of the present invention.

Please refer to FIG. 1 and FIG. 2 , the calibration system includes a portable device 100 and a display device 200 , wherein the portable device 100 can be used as a calibration tool for the display device 200 , and the portable device 100 and the display device 200 communicate with each other through a communication module. 130 and the communication module 230 cooperate to perform calibration of the display device 200 . Specifically, by placing the portable device 100 close to the display panel 220 of the display device 200 , the calibration photosensitive element 150 on the portable device 100 , such as an ambient light sensor or an image acquisition device, can be used to display the display panel 220 Corrections such as color, gamma, or uniformity are set to be performed, but the present invention is not limited thereto.

For example, the portable device 100 can be a smart phone, a tablet, a Personal Digital Assistant (PDA), a handheld game console, etc. with a proximity sensor. 120 , the communication module 130 , and the above-mentioned electronic device such as an ambient light sensor or an image capturing device for calibrating the photosensitive element 150 , the present invention does not limit the specific type of the portable device 100 here. Therefore, with the portable device 100, the user does not need to purchase a dedicated color corrector for the display device 200, which improves the convenience.

In order to avoid the interference of other light in the environment affecting the accuracy during calibration, the proximity sensor 120 provided on the portable device 100 in the embodiment of the present invention senses the distance between the proximity sensor 120 and the display panel 220 distance d, and the calibration process will be started only when the distance d is less than the preset distance. In the calibration process, the portable device 100 will trigger the display device 200 , and after the display device 200 is triggered, the test image will be displayed on the display panel 220 . Then, the portable device 100 can obtain the optical sensing data corresponding to the test image by calibrating the photosensitive element 150 . Using the proximity sensor 200 of the portable device 100 to start the calibration process, the optical sensing data will not include or include little ambient light interference, which can improve the accuracy of the calibration.

The following will illustrate how the portable device 100 and the display device 200 cooperate to perform the calibration method of the display device 200 with several embodiments.

first embodiment

FIG. 2 is a schematic block diagram of a calibration system according to an embodiment of the present invention.

Referring to FIG. 2 , in this embodiment, the portable device 100 includes a processor 110 , a proximity sensor 120 coupled to the processor 110 , a communication module 130 , a storage element 140 and a calibration photosensitive element 150 .

The processor 110 is used for the overall operation of the portable device 100 . For example, the processor 110 may be a central processing unit (CPU), or other programmable general-purpose or special-purpose microprocessors (Microprocessors), digital signal processors (Digital Signal Processors, DSPs) ), programmable controller, Application Specific Integrated Circuits (ASIC), Programmable Logic Device (PLD), or other similar devices or a combination of these devices, etc., which are not set forth in the present invention. limit.

The proximity sensor 120 is used to obtain sensing data that can reflect the distance d from the display panel 220 . For example, the proximity sensor 120 may be a sensor that detects an object close to a predetermined detection surface or nearby objects without mechanical contact, such as a transmissive photoelectric sensor ( transmission type photoelectric sensor), direct reflection type photoelectric sensor, mirror reflection type photoelectric sensor, high frequency oscillation type proximity sensor, capacitor A capacity type proximity sensor, a magnetic type proximity sensor, an infrared light proximity sensor or a combination of these devices is not limited in the present invention.

The communication module 130 is used to communicate with the display device 200 , and thus can be any wired or wireless interface module compatible with the communication module 230 of the display device 200 . For example, the communication module 130 may use a wired communication interface such as cable, Universal Serial Bus (USB), thunderbolt, Controller Area Network (CAN), Recommended Standard (RS) 232 , Recommended standard (RS) 422 and other interfaces, universal asynchronous receiver/transmitter (UART), serial peripheral interface bus (SPI), and wireless communication interfaces such as wireless sensor networks can also be used (e.g. EnOcean, Bluetooth, ZigBee), Cellular (2G/3G/Long Term Evolution (LTE)/5G), Wireless Area Network (e.g. Wireless Area Network (WLAN), Global Microwave WiMAX), short-range point-to-point communication (for example, radio frequency identification (RFID), EnOcean, near field communication (NFC)), wireless fidelity network (Wireless Fidelity, WiFi), etc., the present invention is not limited here.

The storage element 140 is used for storing data. For example, the storage element 140 may be fixed or mobile random access memory (RAM), read-only memory (ROM), flash memory, any form of hard disk, or any of these devices. combination, the present invention is not limited herein.

The calibration photosensitive element 150 is used to obtain optical sensing data corresponding to the test image IMG from the display panel 220 that is displaying the test image IMG in the calibration process. For example, the calibration sensor 150 may include an image acquisition device (eg, a camera) and an ambient light sensor (ALS), wherein the image acquisition device may be used to acquire an RGB image corresponding to the test image IMG, and The ambient light sensor can be used to obtain the luminance value corresponding to the test image IMG. In particular, on the portable device 100, the calibration photosensitive element 150 and the proximity sensor 120 are disposed at adjacent positions. Therefore, the distance d sensed by the proximity sensor 120 can also be regarded as a correction for the distance between the photosensitive element 150 and the display panel 220 .

On the other hand, the display device 200 includes a processor 210 , a display panel 220 coupled to the processor 210 , a communication module 230 and a non-volatile memory (NVM) 240 . The processor 210 is used for displaying the test image IMG on the display panel 220 . For example, the processor 210 includes a scaler and a Micro Controller Unit (MCU). However, the present invention is not limited to this, and the processor 210 may further include other processing units with computing capabilities, such as a central processing unit. The display panel 220 is used for displaying the test image IMG according to the display setting. For example, the display panel 220 may be a liquid crystal display (LCD), a light-emitting diode (LED), an organic light-emitting diode (OLED), or other type of display screen. Display settings such as a display lookup table (3DLookup Table) LUT are recorded in the non-volatile memory 240 to display the test image IMG, but the present invention is not limited thereto. The communication module 230 is used to communicate with the portable device 100 , and thus can be any wired or wireless interface module compatible with the communication module 130 of the portable device 100 . For example, the communication module 230 can use a wired communication interface such as cable, Universal Serial Bus (USB), thunderbolt, Controller Area Network (CAN), Recommended Standard (RS) 232, It is recommended to use standard (RS) 422 and other interfaces, universal asynchronous receiver/transmitter (UART), serial peripheral interface bus (SPI), and wireless communication interfaces such as wireless sensor networks (eg , EnOcean, Bluetooth, ZigBee), cellular network (2G/3G/Long Term Evolution (LTE)/5G), wireless area network (e.g., wireless area network (WLAN), Worldwide Interoperability for Microwave Connectivity (WiMAX)), short-range point-to-point communication (eg, radio frequency identification (RFID), EnOcean, near field communication (NFC)), wireless fidelity network (Wireless Fidelity, WiFi), etc., the present invention is not limited herein. The non-volatile memory 240 is used to record the display settings of the display panel 220 . For example, the non-volatile memory 240 may be a read-only memory (ROM), a flash memory, a hard disk of any form, or a combination of these devices, and a display look-up table LUT is recorded, but the present invention does not Not limited to this.

In this embodiment, the storage element 140 of the portable device 100 stores one or more test images IMG. The test image IMG is an image that the display panel 220 of the display device 200 needs to display during the calibration process. However, it should be noted that the present invention does not limit the image content of the test image IMG. After the portable device 100 starts the calibration application, the proximity sensor 120 will sense the distance d between the portable device 100 and the display panel 220 of the display device 200, and then start the calibration when the distance d is smaller than the preset distance. process.

In this embodiment, during the calibration process, the portable device 100 sends the test image _IMG to the display device 200 through the signal SIMG, for example, to trigger the display device 200, and the display device 200 displays the received image through the display panel 220. The test image IMG. Then, the portable device 100 uses the calibration photosensitive element 150 to obtain optical sensing data corresponding to the test image IMG, and the processor 110 calculates the adjustment of the display settings of the display panel 220 according to the test image IMG and the optical sensing data Program. Then, the portable device 100 sends the calculated adjustment scheme to the display device 200 through the signal _SC , and the display device 200 adjusts the display settings of the display panel 220 according to the received adjustment scheme (for example, updating Display Lookup Table LUT).

The adjustment scheme of the display settings can be calculated not only by the processor 100 of the portable device 100 but also by a cloud computing host (not shown). Specifically, in this embodiment, the portable device 100 can also upload the test image IMG and the optical sensing data to the cloud computing host (for example, through the communication module 130 ). The cloud computing host can calculate the adjustment scheme of the display settings of the display panel 220 through algorithms such as artificial intelligence. In this way, the disadvantage that the calibration photosensitive element 150 of the portable device 100 may not be as accurate as a dedicated calibration tool can be compensated.

Second Embodiment

FIG. 3 is a schematic block diagram of a calibration system according to an embodiment of the present invention.

Elements in the portable device 100 and the display device 200 of this embodiment are the same as or similar to those in the first embodiment, and thus are not repeated here.

Referring to FIG. 3 , in this embodiment, the storage element 140 of the portable device 100 stores one or more test images IMG. The test image IMG is an image that the display panel 220 of the display device 200 needs to display during the calibration process. However, it should be noted that the present invention does not limit the image content of the test image IMG. After the portable device 100 starts the calibration application, the proximity sensor 120 will sense the distance d between the portable device 100 and the display panel 220 of the display device 200 , and then start the calibration process when the distance d is smaller than the preset distance.

In this embodiment, during the calibration process, the portable device 100 sends the test image _IMG to the display device 200 through the signal SIMG, for example, to trigger the display device 200, and the display device 200 displays the received image through the display panel 220. The test image IMG. Then, the portable device 100 uses the calibration photosensitive element 150 to obtain optical sensing data corresponding to the test image IMG, and sends the optical sensing data to the display device 200 through the signal S _DATA . Next, the processor 210 of the display device 200 calculates an adjustment scheme of the display panel 220 according to the test image IMG and the optical sensing data, and adjusts the display settings of the display panel 220 according to the calculated adjustment scheme (for example, updating the display Lookup table LUT).

Third Embodiment

FIG. 4 is a schematic block diagram of a calibration system according to an embodiment of the present invention.

Elements in the portable device 100 and the display device 200 of this embodiment are the same as or similar to those in the first embodiment, and thus are not repeated here.

Referring to FIG. 4 , in this embodiment, the non-volatile memory 240 of the display device 200 stores one or more test images IMG. The test image IMG is an image that the display panel 220 of the display device 200 needs to display during the calibration process. However, it should be noted that the present invention does not limit the image content of the test image IMG. After the portable device 100 starts the calibration application, the proximity sensor 120 will sense the distance d between the portable device 100 and the display panel 220 of the display device 200 , and then start the calibration process when the distance d is smaller than the preset distance.

In the present embodiment, in the calibration process, the portable device 100 triggers the display device 200 by, for example, the trigger signal _ST , and the display device 200 triggered by the trigger signal _ST will display the recording in the non-easy through the display panel 220 . test image IMG in the volatile memory 240 . Then, the portable device 100 uses the calibration photosensitive element 150 to obtain optical sensing data corresponding to the test image IMG, and the processor 110 calculates the adjustment of the display settings of the display panel 220 according to the test image IMG and the optical sensing data Program. Then, the portable device 100 sends the calculated adjustment scheme to the display device 200 through the signal _SC , and the display device 200 adjusts the display settings of the display panel 220 according to the received adjustment scheme (for example, updating Display Lookup Table LUT).

The adjustment scheme of the display settings can be calculated not only by the processor 100 of the portable device 100 but also by a cloud computing host (not shown). Specifically, in this embodiment, the portable device 100 can also upload the test image IMG and the optical sensing data to the cloud computing host (for example, through the communication module 130 ). The cloud computing host can calculate the adjustment scheme of the display settings of the display panel 220 through algorithms such as artificial intelligence. In this way, the disadvantage that the calibration photosensitive element 150 of the portable device 100 may not be as accurate as a dedicated calibration tool can be compensated.

Fourth Embodiment

FIG. 5 is a schematic block diagram of a calibration system according to an embodiment of the present invention.

Elements in the portable device 100 and the display device 200 of this embodiment are the same as or similar to those in the first embodiment, and thus are not repeated here.

Referring to FIG. 5 , in this embodiment, the non-volatile memory 240 of the display device 200 stores one or more test images IMG. The test image IMG is an image that the display panel 220 of the display device 200 needs to display during the calibration process. However, it should be noted that the present invention does not limit the image content of the test image IMG. After the portable device 100 starts the calibration application, the proximity sensor 120 will sense the distance d between the portable device 100 and the display panel 220 of the display device 200 , and then start the calibration process when the distance d is smaller than the preset distance.

In the present embodiment, in the calibration process, the portable device 100 triggers the display device 200 by, for example, the trigger signal _ST , and the display device 200 triggered by the trigger signal _ST will display the recording in the non-easy through the display panel 220 . test image IMG in the volatile memory 240 . Then, the portable device 100 uses the calibration photosensitive element 150 to obtain optical sensing data corresponding to the test image IMG, and sends the optical sensing data to the display device 200 through the signal S _DATA . Next, the processor 210 of the display device 200 calculates an adjustment scheme of the display panel 220 according to the test image IMG and the optical sensing data, and adjusts the display settings of the display panel 220 according to the calculated adjustment scheme (for example, updating the display Lookup table LUT).

In some embodiments, the display panel 220 of the display device 200 has multiple test images IMG, and the portable device 100 uses the calibration sensor 150 to obtain multiple optical sensing data corresponding to the multiple test images IMG. Then, the portable device 100 , the display device 200 or the cloud computing host calculates an adjustment scheme according to the above-mentioned multiple test images IMG and the corresponding multiple pieces of optical sensing data, so as to adjust the display device of the display panel 220 accordingly. Certainly.

In some embodiments, the display panel 220 of the display device 200 can also display one test image IMG at a time, and the portable device 100 uses the calibration sensor 150 to obtain a stroke of optical sensing corresponding to the displayed test image IMG data. Then, the portable device 100 , the display device 200 or the cloud computing host calculates an adjustment scheme according to the above-mentioned test image IMG and the corresponding optical sensing data, so as to adjust the display setting of the display panel 220 accordingly. Next, the display panel 220 of the display device 200 displays the next test image IMG, and the portable device 100 uses the calibration sensor 150 to obtain a piece of optical sensing data corresponding to the displayed test image IMG. Then, the portable device 100 , the display device 200 or the cloud computing host calculates an adjustment scheme according to the displayed test image IMG and the corresponding optical sensing data, and then adjusts the display settings of the display panel 220 accordingly, so as to And so on until all test image IMGs have been displayed.

In some embodiments, the display panel 220 of the display device 200 can display a plurality of the same or different test images IMG at different positions, and the portable device 100 uses the calibration sensor 150 to obtain the test images corresponding to the above-mentioned plurality of test images. Multiple optical sensing data from IMG. Then, the portable device 100, the display device 200 or the cloud computing host will calculate the adjustment scheme according to the plurality of test images IMG and its corresponding multiple pieces of optical sensing data, as well as the display positions of the plurality of test images IMG, to The display settings of the display panel 220 are adjusted accordingly. Accordingly, the uniformity of the display panel 220 can be corrected.

In some embodiments, the user can, for example, set the adjustment target of the display panel 220 through the calibration application of the portable device 100 , such as setting RGB three points in the color space, etc. The formula device 100 , the display device 200 or the cloud computing host will also perform the calculation according to the adjustment target when calculating the adjustment plan.

In some embodiments, the display setting of the display panel 220 may also be corrected according to the image capturing device of the portable device 100 , for example, the gamma curve or color response of the display panel 220 may be adjusted according to the image capturing device of the portable device 100 . Device synchronization.

For example, the display panel 220 displays a plurality of different test images IMG. For each test image IMG, the image acquisition device of the portable device 100 will capture a corresponding RGB image, and the display panel 220 must adjust the display settings so that each test image IMG matches the corresponding RGB image. For example, when the R values of the test images IMG are respectively 32, the display settings of the display panel 220 must be adjusted (eg, the RGB gain value is adjusted) so that the R values of the RGB images captured by the image capturing device of the portable device 100 are also 32; When the R values of the test images IMG are respectively 255, the display settings of the display panel 220 must be adjusted (for example, the RGB gain value is adjusted) so that the R values of the RGB images captured by the image acquisition device of the portable device 100 are also 255, and so on. It should be noted that although the above example is for adjusting the R value, the present invention is not limited thereto, and the adjustment may also be for adjusting one or more other values, such as the Y value or the RGB value.

Accordingly, when there is a need to use the image capturing device of the portable device 100 to capture the display content of the display panel 220 , the image capturing device of the portable device 100 will be able to capture all the details displayed on the display panel 220 .

FIG. 6 is a flowchart of a calibration method of a display device according to an embodiment of the present invention. The steps of the calibration method of this embodiment will be described with reference to various elements of the portable device 100 in FIGS. 1 to 5 . It must be noted that the details of the steps that have been described in the foregoing embodiments will not be repeated hereinafter.

Referring to FIG. 6 , first, the proximity sensor 120 of the portable device 100 will sense the distance d from the display panel 220 of the display device 200 (step S610 ), and then the processor 110 will determine whether the distance d is less than a preset distance distance (step S620). If the distance d is not less than the preset distance, the subsequent calibration process is not started and the distance d is continued to be sensed (step S610). On the other hand, if the distance d is smaller than the preset distance, the calibration process is started (step S630). In the calibration process, the portable device 100 triggers the display device 200 through the communication module 130 to cause the display panel 220 to display the test image IMG.

FIG. 7 is a flowchart of a calibration method of a display device according to an embodiment of the present invention. The steps of the calibration method of this embodiment will be described with reference to various elements of the portable device 100 in FIGS. 1 to 5 . It must be noted that the details of the steps that have been described in the foregoing embodiments will not be repeated hereinafter.

In order to prevent the portable device 100 from moving during the calibration process, resulting in a decrease in accuracy, the portable device 100 of this embodiment also uses the proximity sensor 120 , the ambient light sensor and/or the acceleration sensor during the calibration process (not shown) to ensure calibration accuracy.

Referring to FIG. 7 , in this embodiment, the portable device 100 detects whether the portable device 100 moves during the calibration process (step S640 ). For example, the portable device 100 can use the proximity sensor 120 or the acceleration sensor to determine whether the portable device 100 is moving.

If the portable device 100 does not detect movement, the portable device 100 further determines whether the ambient light intensity is stable (step S650 ). For example, the portable device 100 may utilize an ambient light sensor to sense ambient light intensity. If the variation of the ambient light intensity within the preset time is not greater than the preset threshold, the ambient light intensity is judged to be stable; otherwise, if the variation of the ambient light intensity within the preset time is greater than the preset threshold, the ambient light is judged to be stable Strength is unstable.

If the portable device 100 detects movement or determines that the ambient light intensity is unstable, the calibration process will be suspended (step S690 ). For example, when the portable device 100 detects movement or determines that the ambient light intensity is unstable, the communication module 130 can send a notification signal that the calibration process is suspended to the display device 200 , so that the display panel 220 of the display device 200 can display warn. When the calibration process is suspended, the display device 200 will not adjust the display settings of the display panel 220 .

If the portable device 100 does not detect movement and determines that the ambient light intensity is stable, the optical sensing data corresponding to the test image IMG is obtained by using the calibration photosensitive element 150 (step S660 ).

After obtaining the optical sensing data corresponding to the test image IMG, the portable device 100 determines whether there is an undisplayed test image IMG (step S670 ). If so, the portable device 100 triggers the display device 200 to display the next test image IMG on the display panel 220 (step S675 ), and then continues the calibration process. On the contrary, if all the test images IMG have been displayed, the display settings of the display panel 220 will be corrected according to all the test images IMG and their corresponding optical sensing data (step S680 ).

To sum up, the portable device, the display device, and the calibration method for the display device proposed by the embodiments of the present invention use the proximity sensor on the portable device to start the calibration process when the distance from the display panel is close enough . In the calibration process, the portable device triggers the display device to display the test image on the display panel of the display device, and uses the image acquisition device and/or the ambient light sensor on the portable device to calibrate the sensor to obtain the corresponding Optical sensing data of the test image. In this way, the display settings of the display panel can be corrected according to the test image and the optical sensing data. Accordingly, the user can use the portable device to calibrate the display device without purchasing an expensive special color corrector, which greatly improves the convenience. Furthermore, the accuracy of the calibration can be improved by utilizing the proximity sensor on the portable device.

Although the present invention has been disclosed as above with examples, it is not intended to limit the present invention. Those skilled in the art can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection shall be subject to the appended claims.

Claims (19)

1. A portable device, the device comprising:

a proximity sensor for sensing a distance between the portable device and a display panel of a display device;

a communication module for communicating with the display device; and

and the processor is coupled with the proximity sensor and the communication module and used for determining whether to start a correction process according to the distance and triggering the display device through the communication module after the correction process is started so as to enable the display panel to display a test image.

2. The portable device of claim 1, further comprising:

and the correcting photosensitive element is coupled with the processor and used for acquiring optical sensing data corresponding to the test image.

3. The portable device of claim 2, wherein the processor is further configured to generate a calibration signal according to the test image and the optical sensing data, and send the calibration signal to the display device through the communication module.

4. The portable device of claim 2, wherein the processor is further configured to send the optical sensing data to the display device via the communication module.

5. The portable device of claim 2, wherein the communication module receives a request signal from the display device, and the processor determines a data type of the optical sensing data according to the data request.

6. The portable device of claim 2, wherein the calibration photosensitive element comprises an image capturing device for capturing an RGB image corresponding to the test image.

7. The portable device of claim 2, wherein the calibration photosensitive element comprises an ambient light sensor for obtaining a brightness value corresponding to the test image.

8. The portable device of claim 1, wherein the processor is further configured to send the test image to the display device through the communication module, so that the display panel displays the test image.

9. The portable device of claim 1, wherein the processor initiates the calibration process when the distance is determined to be less than a predetermined distance.

10. A calibration method of a display device is suitable for a portable device, and is characterized in that the calibration method comprises the following steps:

sensing a distance between the display device and a display panel of the display device;

determining whether to start a correction process according to the distance; and

and triggering the display device after the correction process is started so that the display panel displays a test image.

11. The correction method according to claim 10, characterized in that the method further comprises:

obtaining an optical sensing data corresponding to the test image.

12. The correction method according to claim 11, characterized in that the method further comprises:

generating a correction signal according to the test image and the optical sensing data; and

and sending the correction signal to the display device.

13. The correction method according to claim 11, characterized in that the method further comprises:

the optical sensing data is sent to the display device.

14. The calibration method of claim 11, wherein the step of obtaining the optical sensing data corresponding to the test image comprises:

receiving a request signal from the display device; and

determining a data type of the optical sensing data according to the request signal.

15. The calibration method of claim 11, wherein the step of obtaining the optical sensing data corresponding to the test image comprises:

obtaining an RGB image corresponding to the test image.

16. The calibration method of claim 11, wherein the step of obtaining the optical sensing data corresponding to the test image comprises:

obtaining a brightness value corresponding to the test image.

17. The calibration method as claimed in claim 10, wherein the step of triggering the display device to display the test image on the display panel after the calibration process is initiated comprises:

and sending the test image to the display device so that the display panel displays the test image.

18. The calibration method of claim 10, wherein the step of determining whether to initiate the calibration process according to the distance comprises:

judging whether the distance is smaller than a preset distance; and

and starting the correction process when the distance is judged to be smaller than the preset distance.

19. A display device, characterized in that the device comprises:

a display panel for displaying a test image according to a display setting;

a communication module for receiving an optical sensing data corresponding to the test image from a portable device;

a processor, coupled to the display panel and the communication module, for calibrating the display setting according to the test image and the optical sensing data; and

a non-volatile memory for storing the test image,

the communication module receives a trigger signal from the portable device, and in response to the trigger signal, the display panel displays the test image in the nonvolatile memory according to the display setting.

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