Refresh rate adjustment method and device of display screen, display screen and storage medium

Abstract

The application relates to the technical field of display screens, in particular to a display screen refresh rate adjusting method and device, a display screen and a storage medium. The application detects a response signal of an active capacitive pen when the display screen is working; when the response signal is not detected, the refresh rate of the display screen is adjusted so that the display screen is in a high refresh rate mode, thereby achieving the high refresh rate of the display screen while supporting the active capacitive pen function.

Description

Technical Field

[0001] This invention relates to the field of display screen technology, and in particular to a method, apparatus, display screen, and storage medium for adjusting the refresh rate of a display screen. Background Technology

[0002] Because the touch panel is embedded in the liquid crystal pixels, the display and touch functions of a touchscreen using In-cell technology cannot work simultaneously (they would interfere with each other if they did). Therefore, In-cell screens use a time-sharing method for display and touch, where the display works for a period of time, followed by the touch function, and the allocation of display and touch working time is handled by the TDDI chip.

[0003] For example, the unit working time of an In-cell screen is T. frame (The duration of a frame is usually 8ms, 16ms, etc.), and the display duration within a unit of working time is T. display The touch screen working time is T touch Then T frame =T display +T touch When T display A higher screen-to-body ratio allows the screen to spend more time refreshing the image, thus achieving a higher screen refresh rate. For example, T... display =T frame T touch When the refresh rate is 0, the screen can achieve a 144Hz display refresh rate, while T... display =0.4*T frame The screen can only achieve a 60Hz refresh rate.

[0004] It is clear that to achieve a higher screen refresh rate, it is necessary to increase T. display The proportion of T. display When it increases to a certain level, the remaining T touch That's not enough to support screen detection of active capacitive styluses.

[0005] Generally speaking, T touch It must contain a T uplink and multiple T downlink Only then can the active capacitive pen detection function be realized. And a T uplink and multiple T downlink The combination is precisely the working requirement of an active capacitive pen; the active pen in T uplink The stage receives data emitted from the screen and in T downlink The stage sends relevant data to the screen. Due to the large amount of data and the fact that each T... downlink The time is short, so multiple Ts are needed. downlinkOnly then can all the data be sent to the screen.

[0006] Therefore, some touchscreens cannot achieve a high refresh rate while still supporting stylus functionality.

[0007] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0008] The main objective of this invention is to provide a method, device, display screen, and storage medium for adjusting the refresh rate of a display screen, aiming to solve the technical problem that some touch screens in the prior art cannot achieve a high refresh rate while still supporting active capacitive pen functionality.

[0009] To achieve the above objectives, the present invention provides a method for adjusting the refresh rate of a display screen, the method comprising the following steps:

[0010] The system detects the response signal of the active capacitive pen while the display is in operation.

[0011] If no response signal is detected, the refresh rate of the display screen is adjusted to put the display screen into a high refresh rate mode.

[0012] Optionally, detecting the response signal of the active capacitive stylus while the display screen is operating includes:

[0013] When the display screen is working, an identification signal is sent to the active capacitive pen so that the active capacitive pen outputs a response signal based on the identification signal.

[0014] The response signal output by the active capacitive pen is detected.

[0015] Optionally, after detecting the response signal of the active capacitive pen when the display screen is working, the method further includes:

[0016] Upon detecting the response signal, the refresh rate of the display screen is adjusted to put the display screen into a low refresh rate mode.

[0017] Optionally, adjusting the refresh rate of the display screen upon detecting the response signal to put the display screen into a low refresh rate mode includes:

[0018] When the response signal is detected, check whether there is a hash relationship between the response signal and the identification signal;

[0019] If so, the active capacitive pen function is enabled, and the refresh rate of the display screen is adjusted to put the display screen in a low refresh rate mode.

[0020] Optionally, sending the identification signal to the active capacitive pen includes:

[0021] The identification signal is modulated using a preset method and then sent to the active capacitive pen. The identification signal includes bit data that is identified by the active capacitive pen.

[0022] Optionally, the response signal is the identification signal after hashing.

[0023] Optionally, adjusting the refresh rate of the display screen to put the display screen in a high refresh rate mode when no response signal is detected includes:

[0024] If no response signal is detected, record the detection duration;

[0025] When the detection time reaches the preset time, the refresh rate of the display screen is adjusted to put the display screen into a high refresh rate mode.

[0026] Furthermore, to achieve the above objectives, the present invention also proposes a refresh rate adjustment device for a display screen, the refresh rate adjustment device comprising:

[0027] The capacitive pen detection module is used to detect the response signal of the active capacitive pen when the display screen is working;

[0028] The display adjustment module is used to adjust the refresh rate of the display screen to put the display screen in a high refresh rate mode when no response signal is detected.

[0029] Furthermore, to achieve the above objectives, the present invention also proposes a display screen, the display screen comprising: a memory, a processor, and a display screen refresh rate adjustment program stored in the memory and executable on the processor, the display screen refresh rate adjustment program being configured to implement the steps of the display screen refresh rate adjustment method as described in any one of claims 1 to 7.

[0030] Furthermore, to achieve the above objectives, the present invention also proposes a storage medium storing a refresh rate adjustment program for a display screen, wherein when the refresh rate adjustment program for the display screen is executed by a processor, the refresh rate adjustment program for the display screen implements the steps of the refresh rate adjustment method for the display screen as described above.

[0031] This invention detects the response signal of an active capacitive stylus while the display screen is working; when no response signal is detected, the refresh rate of the display screen is adjusted to put the display screen into a high refresh rate mode, thereby achieving a high refresh rate for the display screen while also supporting the active capacitive stylus function. Attached Figure Description

[0032] Figure 1This is a schematic diagram of the refresh rate adjustment device structure of the display screen in the hardware operating environment involved in the embodiments of the present invention;

[0033] Figure 2 This is a flowchart illustrating the first embodiment of the refresh rate adjustment method for a display screen according to the present invention.

[0034] Figure 3 This is a flowchart illustrating the second embodiment of the refresh rate adjustment method for a display screen according to the present invention.

[0035] Figure 4 This is a flowchart illustrating the third embodiment of the refresh rate adjustment method for a display screen according to the present invention.

[0036] Figure 5 This is a structural block diagram of the first embodiment of the display screen refresh rate adjustment device of the present invention.

[0037] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0039] Reference Figure 1 , Figure 1 This is a schematic diagram of the refresh rate adjustment device for the display screen in the hardware operating environment involved in the embodiments of the present invention.

[0040] like Figure 1 As shown, the refresh rate adjustment device for the display screen may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen, and optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. In this invention, the wired interface of the user interface 1003 may be a USB interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface). The memory 1005 may be a high-speed random access memory (RAM) or a non-volatile memory (NVM), such as a disk storage device. The memory 1005 may also optionally be a storage device independent of the aforementioned processor 1001.

[0041] Those skilled in the art will understand that Figure 1 The structure shown does not constitute a limitation on the refresh rate adjustment device for the display screen, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0042] like Figure 1 As shown, the memory 1005, which serves as a computer storage medium, may include an operating system, a network communication module, a user interface module, and a display refresh rate adjustment program.

[0043] exist Figure 1 In the refresh rate adjustment device of the display screen shown, the network interface 1004 is mainly used to connect to the backend server and communicate data with the backend server; the user interface 1003 is mainly used to connect to peripheral devices; the refresh rate adjustment device of the display screen calls the refresh rate adjustment program of the display screen stored in the memory 1005 through the processor 1001 and executes the refresh rate adjustment method of the display screen provided in the embodiment of the present invention.

[0044] Based on the above hardware structure, an embodiment of the refresh rate adjustment method for the display screen of the present invention is proposed.

[0045] Reference Figure 2 , Figure 2 This is a flowchart illustrating the first embodiment of the refresh rate adjustment method for the display screen of the present invention, which presents the first embodiment of the refresh rate adjustment method for the display screen of the present invention.

[0046] In the first embodiment, the refresh rate adjustment method for the display screen includes the following steps:

[0047] Step S10: When the display screen is working, detect the response signal of the active capacitive pen.

[0048] Step S20: When no response signal is detected, adjust the refresh rate of the display screen to put the display screen in a high refresh rate mode.

[0049] It should be noted that the execution subject of this embodiment can be a control device with functions of detecting active capacitive stylus, adjusting display refresh rate, and running programs, or other electronic devices capable of performing the above functions. The control device is applied to a display screen that is paired with an active capacitive stylus.

[0050] It should be understood that the aforementioned response signal can be a signal generated by the active capacitive pen when interacting with the display screen. Active capacitive pens can communicate with the touchscreen through various mechanisms, such as electromagnetic signals, changes in electric fields, etc., depending on the specific pen and screen technology.

[0051] Understandably, "no response signal detected" refers to the positional information in these signals, meaning the pen tip did not touch the screen. Therefore, there is no need to reduce the refresh rate to optimize the pen's response performance, and the screen can work at a high refresh rate to provide a better visual display.

[0052] In the first embodiment, the active capacitive pen response signal is detected when the display screen is working; when the response signal is not detected, the refresh rate of the display screen is adjusted to put the display screen in a high refresh rate mode, thereby achieving a high refresh rate of the display screen while also supporting the active capacitive pen function.

[0053] Reference Figure 3 , Figure 3 This is a flowchart illustrating the second embodiment of the refresh rate adjustment method for the display screen of the present invention, based on the above. Figure 2 The first embodiment shown presents a second embodiment of the refresh rate adjustment method for the display screen of the present invention.

[0054] In the second embodiment, step S10 includes:

[0055] Step S10': When the display screen is working, send an identification signal to the active capacitive pen so that the active capacitive pen outputs a response signal based on the identification signal;

[0056] The response signal output by the active capacitive pen is detected.

[0057] It's important to note that when the display is operating, an identification signal is sent to the active capacitive stylus. This can be a trigger signal, an electromagnetic signal of a specific frequency, etc., used to notify the active capacitive stylus to interact with the display. After receiving the identification signal, the active capacitive stylus outputs a response signal based on the received signal. The response signal can contain data related to display interaction, such as the active capacitive stylus's position, pressure, and tilt information. The display's controller or processor receives and analyzes the response signal from the active capacitive stylus to determine whether the device is currently in high refresh rate mode or needs to reduce the refresh rate to accommodate the active capacitive stylus's operation.

[0058] Furthermore, the above step of sending an identification signal to the active capacitive pen specifically includes:

[0059] The identification signal is modulated using a preset method and then sent to the active capacitive pen. The identification signal includes bit data that is identified by the active capacitive pen.

[0060] It should be noted that a simplified screen-pen communication protocol can be developed, which uses only one T. uplink And a T downlink That is, the screen in a unit of time T frameUse a T section inside uplink Time-based identification signals are sent for the active capacitive pen to detect, and within a unit time T frame Reserve a T segment during the remaining time downlink The time is used to receive the response signal from the active capacitive pen. The recognition signal sent by the screen contains several bits of data, and specific data within these bits is used for the active capacitive pen's recognition.

[0061] It should be understood that the aforementioned identification signal can be modulated using methods such as DSSS, ASK, FSK, and PSK before transmission, with the specific modulation method depending on the actual conditions. The response signal of the active capacitive pen also contains several bits. The data contained in these bits should be derived from the signal received from the screen through a hash operation. The hash algorithm is the same for both the screen and the pen. The response signal can also be modulated using methods such as DSSS, ASK, FSK, and PSK before transmission, with the specific modulation method depending on the actual conditions.

[0062] Understandably, the display controller or processor modulates the bit data into an identification signal and sends it to the active capacitive stylus. The active capacitive stylus then demodulates this signal, extracts the bit data, and generates a response signal for subsequent interaction, ensuring effective information transmission and reliable identification.

[0063] Furthermore, after step S20, the method further includes:

[0064] Step S30: When the response signal is detected, the refresh rate of the display screen is adjusted to put the display screen into a low refresh rate mode.

[0065] It's worth noting that after the display detects a response signal from the active capacitive stylus, it adjusts its refresh rate, putting the display into a low refresh rate mode. This lower refresh rate can potentially improve the accuracy of handwriting tracking when writing or drawing with an active capacitive stylus. In low refresh rate mode, the display's processor and graphics processing unit (GPU) can allocate more resources to processing handwriting input, thereby increasing the accuracy and responsiveness of handwriting detection. Reducing the display refresh rate during drawing or writing can help reduce latency during pen-screen interaction because the system can focus on processing input information rather than frequently refreshing the screen.

[0066] Understandably, the device automatically adjusts the refresh rate after detecting a response signal from the active capacitive stylus, a demonstration of intelligent optimization by the display and related software. When the stylus stops being used or the system detects a need to restore a high refresh rate, it can readjust the display refresh rate to provide a smoother visual experience. This ability to dynamically adjust the display refresh rate reflects the intelligent system's adaptability to user scenarios.

[0067] Further, step S30 specifically includes: when the response signal is detected, checking whether there is a hash relationship between the response signal and the identification signal;

[0068] If so, the active capacitive pen function is enabled, and the refresh rate of the display screen is adjusted to put the display screen in a low refresh rate mode.

[0069] It should be noted that a TDDI control method is developed. When the screen receives a response signal from the capacitive stylus in high refresh rate mode and verifies the hash relationship between the signal and the signal sent by the screen, it can switch to low refresh rate mode and enable full stylus functionality. When the screen is in low refresh rate mode, the stylus is detected in real time; when N consecutive T... frame Once the stylus was not detected, it immediately switched to high refresh rate mode.

[0070] It should be understood that this verification and activation method ensures the legitimacy of active capacitive pens that interact effectively with the display, thereby enhancing system security and reliability. It also prevents the use of unauthorized capacitive pens, reducing potential security risks. After this verification is completed, the system can enable the active capacitive pen function and adjust the display refresh rate accordingly based on actual needs.

[0071] Reference Figure 4 , Figure 4 This is a flowchart illustrating the third embodiment of the refresh rate adjustment method for the display screen of the present invention, based on the above. Figure 3 The second embodiment shown presents a third embodiment of the refresh rate adjustment method for the display screen of the present invention.

[0072] In the third embodiment, step S30 includes:

[0073] Step S30': If no response signal is detected, record the detection duration;

[0074] When the detection time reaches the preset time, the refresh rate of the display screen is adjusted to put the display screen into a high refresh rate mode.

[0075] It's important to note that recording the detection duration can be one of the criteria for determining when to change the display refresh rate. The system will only switch to high refresh rate mode after the duration of the undetected stylus response signal reaches a certain threshold or a preset duration. This helps prevent frequent and unnecessary refresh rate changes, thereby improving display quality and optimizing power consumption.

[0076] Furthermore, this embodiment of the invention also proposes a storage medium storing a refresh rate adjustment program for a display screen. When the refresh rate adjustment program for the display screen is executed by a processor, it implements the steps of the refresh rate adjustment method for the display screen as described above.

[0077] In addition, refer to Figure 5 This invention also proposes a refresh rate adjustment device for a display screen, the refresh rate adjustment device comprising:

[0078] The capacitive pen detection module 10 is used to detect the response signal of the active capacitive pen when the display screen is working;

[0079] The display adjustment module 20 is used to adjust the refresh rate of the display screen when no response signal is detected, so that the display screen is in a high refresh rate mode.

[0080] In this embodiment, the response signal of the active capacitive stylus is detected when the display screen is working; when the response signal is not detected, the refresh rate of the display screen is adjusted to put the display screen in a high refresh rate mode, thereby achieving a high refresh rate of the display screen while also supporting the active capacitive stylus function.

[0081] Other embodiments or specific implementations of the refresh rate adjustment device for the display screen described in this invention can be found in the above-described method embodiments, and will not be repeated here.

[0082] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0083] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. In the unit claims listing several devices, several of these devices may be embodied by the same hardware item. The use of the terms first, second, and third, etc., does not indicate any order and can be interpreted as names.

[0084] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as a read-only memory image (ROM) / random access memory (RAM), magnetic disk, optical disk), and includes several instructions to cause a terminal user device (which may be a mobile phone, computer, server, air conditioner, or network user device, etc.) to execute the methods described in the various embodiments of the present invention.

[0085] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A method for adjusting the refresh rate of a display screen, characterized in that, The method is applied to a display screen used with an active capacitive pen, and the method includes: The system detects the response signal of the active capacitive pen while the display is in operation. When no response signal is detected, the refresh rate of the display screen is adjusted to put the display screen into a high refresh rate mode; The detection of the active capacitive stylus's response signal when the display screen is working includes: When the display screen is working, an identification signal is sent to the active capacitive pen so that the active capacitive pen outputs a response signal based on the identification signal. Detect the response signal output by the active capacitive pen; After detecting the response signal of the active capacitive stylus while the display screen is working, the method further includes: Upon detecting the response signal, the refresh rate of the display screen is adjusted to put the display screen into a low refresh rate mode; The step of adjusting the refresh rate of the display screen to put the display screen into a low refresh rate mode upon detecting the response signal includes: When the response signal is detected, check whether there is a hash relationship between the response signal and the identification signal; If so, the active capacitive pen function is enabled, and the refresh rate of the display screen is adjusted to put the display screen in a low refresh rate mode.

2. The refresh rate adjustment method for a display screen as described in claim 1, characterized in that, Sending the identification signal to the active capacitive pen includes: The identification signal is modulated using a preset method and then sent to the active capacitive pen. The identification signal includes bit data that is identified by the active capacitive pen.

3. The refresh rate adjustment method for a display screen as described in claim 1, characterized in that, The response signal is the identification signal obtained after hashing.

4. The refresh rate adjustment method for a display screen as described in claim 1, characterized in that, The step of adjusting the refresh rate of the display screen to put the display screen into a high refresh rate mode when no response signal is detected includes: If no response signal is detected, record the detection duration; When the detection time reaches the preset time, the refresh rate of the display screen is adjusted to put the display screen into a high refresh rate mode.

5. A refresh rate adjustment device for a display screen, characterized in that, The device includes: The capacitive pen detection module is used to detect the response signal of the active capacitive pen when the display screen is working; The display adjustment module is used to adjust the refresh rate of the display screen when no response signal is detected, so that the display screen is in a high refresh rate mode; The capacitive pen detection module is also used to send an identification signal to the active capacitive pen when the display screen is working, so that the active capacitive pen outputs a response signal based on the identification signal; and to detect the response signal output by the active capacitive pen. The capacitive pen detection module is also used to adjust the refresh rate of the display screen when the response signal is detected, so that the display screen is in a low refresh rate mode. The capacitive pen detection module is also used to check whether there is a hash relationship between the response signal and the identification signal when the response signal is detected; if so, the active capacitive pen function is enabled and the refresh rate of the display screen is adjusted so that the display screen is in a low refresh rate mode.

6. A display screen, characterized in that, The display screen includes: a memory, a processor, and a refresh rate adjustment program for the display screen stored in the memory and executable on the processor, the refresh rate adjustment program being configured to implement the steps of the refresh rate adjustment method for the display screen as described in any one of claims 1 to 4.

7. A storage medium, characterized in that, The storage medium stores a refresh rate adjustment program for the display screen, which, when executed by a processor, implements the steps of the refresh rate adjustment method for the display screen as described in any one of claims 1 to 4.

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