Mode switching method, controller, readable storage medium and display equipment

Abstract

The invention relates to the technical field of screen display, in particular to a mode switching method, a controller, a readable storage medium and display equipment, and aims to solve the technical problem of how to effectively solve splash screen during mutual switching between a global DC dimming mode and a high-frequency PWM mode. In order to achieve the purpose, in response to a mode switching instruction of the display screen, the screen brightness of the display screen at the current moment is obtained, according to the screen brightness, Gamma voltages before and after mode switching are obtained, according to the Gamma voltages before and after mode switching, transition Gamma voltages are obtained, and according to the transition Gamma voltages and the Gamma voltages after mode switching, mode switching of the display screen is carried out. According to the mode switching method and device, the situation that the Gamma voltage jumps greatly in the mode switching process can be effectively avoided, so that the splash screen problem in the display screen mode switching process is effectively solved, and the use experience of a user is effectively improved.

Description

Technical Field

[0001] The present application relates to the field of screen display technology, and in particular to a mode switching method, a controller, a readable storage medium and a display device. Background Art

[0002] With the development of OLED (Organic Light-Emitting Diode) screens and the guidance of digital self-media, ordinary consumers currently have the following two main perceptions of OLED screen eye protection systems: DC dimming (Direct Current Dimming) and high-frequency PWM (Pulse Width Modulation) dimming. Each terminal manufacturer has launched its own eye protection solution. Although the names are different, most of their specific technical solutions are still based on high-frequency PWM solutions.

[0003] At present, in the process of OLED light emission, there must be a process of EM being set high (referring to setting the enable signal (EM signal) that controls the light emission of OLED to a high level, thereby starting the light emission process of OLED). Therefore, the DC dimming mentioned in OLED is actually quasi-DC dimming. In the prior art, there is a demand to use both high-frequency PWM mode and global DC dimming mode. The coexistence of the two modes will inevitably involve switching between the modes. The high-frequency PWM mode has a higher number of EM Pulses and a lower duty (duty cycle) at low brightness DBV (a unit representing voltage level); while the number of EM Pulses of global DC dimming is 1 at full brightness, and the duty remains unchanged at about 98%. The above differences will cause screen flickering when switching between the two modes.

[0004] Accordingly, a new mode switching solution is needed in the art to solve the above problems. Summary of the invention

[0005] In order to overcome the above-mentioned defects, the present application is proposed to solve or at least partially solve the technical problem of how to effectively solve the screen flickering when switching between the global DC dimming mode and the high-frequency PWM mode.

[0006] In a first aspect, a mode switching method is provided, the method comprising:

[0007] A mode switching method, characterized in that the method comprises:

[0008] In response to a mode switching instruction of a display screen, obtaining the screen brightness of the display screen at a current moment;

[0009] According to the screen brightness, obtaining the Gamma voltage before and after the mode switching;

[0010] According to the Gamma voltages before and after the mode switching, a transition Gamma voltage is obtained;

[0011] The mode of the display screen is switched according to the transitional Gamma voltage and the Gamma voltage after the mode switching.

[0012] In a technical solution of the above-mentioned mode switching method, obtaining the transitional Gamma voltage according to the Gamma voltages before and after the mode switching includes:

[0013] A linear interpolation calculation is performed according to the Gamma voltages before and after the mode switching to obtain at least one of the transitional Gamma voltages.

[0014] In a technical solution of the above-mentioned mode switching method, performing linear interpolation calculation according to the Gamma voltages before and after the mode switching to obtain at least one of the transitional Gamma voltages includes:

[0015] According to the Gamma voltages before and after the mode switching, a linear interpolation calculation is performed based on a 3D LUT interpolation algorithm to obtain at least one of the transition Gamma voltages.

[0016] In a technical solution of the above-mentioned mode switching method, the mode switching of the display screen is performed according to the transitional Gamma voltage and the Gamma voltage after the mode switching, including:

[0017] Obtaining a first quantity of the transition Gamma voltage;

[0018] According to the first number, rewriting the Gamma voltages of the first number of sequential frames of the display screen after mode switching, so that the Gamma voltage of each of the sequential frames is the transition Gamma voltage in sequence;

[0019] When the display of the first number of sequential frames is completed, the Gamma voltage of the subsequent sequential frames is set to the Gamma voltage after the mode switching.

[0020] In a technical solution of the above-mentioned mode switching method, rewriting the Gamma voltages of the first number of sequential frames of the display screen after the mode switching includes:

[0021] Based on the CMDQ frame execution function, the Gamma voltages of the first number of sequential frames of the display screen after mode switching are rewritten so that the Gamma voltage of each sequential frame is the transition Gamma voltage in sequence.

[0022] In a technical solution of the above-mentioned mode switching method, the screen brightness is DBV brightness;

[0023] The obtaining of the Gamma voltage before and after the mode switching according to the screen brightness includes:

[0024] According to the DBV brightness, respectively obtaining the Gamma voltages of the two DBV binding points before and after the DBV brightness before the mode switching, and the Gamma voltages of the two DBV binding points before and after the DBV brightness after the mode switching;

[0025] According to the Gamma voltages of the two DBV binding points before and after the DBV brightness before the mode switching, obtaining the Gamma voltage before the mode switching;

[0026] The Gamma voltage after the mode switching is obtained according to the Gamma voltages of the two DBV binding points before and after the DBV brightness after the mode switching.

[0027] In a technical solution of the above-mentioned mode switching method, the mode switching instruction is an instruction for controlling the display screen to switch between the high-frequency PWM mode and the global DC mode.

[0028] In a second aspect, a controller is provided, comprising at least one processor; and a memory communicatively connected to the at least one processor; wherein a computer program is stored in the memory, and when the computer program is executed by the at least one processor, the method described in any one of the technical solutions of the above-mentioned mode switching method is implemented.

[0029] In a third aspect, a computer-readable storage medium is provided, wherein a plurality of program codes are stored in the computer-readable storage medium, wherein the program codes are suitable for being loaded and run by a processor to execute the method described in any one of the technical solutions of the above-mentioned mode switching method.

[0030] In a fourth aspect, a display device is provided, comprising a display screen and the controller in the above controller technical solution.

[0031] The above one or more technical solutions of the present application have at least one or more of the following beneficial effects:

[0032] In the implementation of the mode switching method technical solution provided by the present application, the present application responds to the mode switching instruction of the display screen, obtains the screen brightness of the display screen at the current moment, obtains the Gamma voltage before and after the mode switching according to the screen brightness, obtains the transition Gamma voltage according to the Gamma voltage before and after the mode switching, and performs the mode switching of the display screen according to the transition Gamma voltage and the Gamma voltage after the mode switching. Through the above configuration, the present application determines the Gamma voltage before and after the mode switching based on the screen brightness, obtains the transition Gamma voltage based on the Gamma voltage before and after the switching, and thus transitions the Gamma voltage before the mode switching to the Gamma voltage after the mode switching according to the transition Gamma voltage, which can effectively avoid the situation where the Gamma voltage jumps significantly during the mode switching process, thereby effectively optimizing the screen flickering problem during the display screen mode switching process and effectively improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The disclosure of the present application will become easier to understand with reference to the accompanying drawings. It is easy for those skilled in the art to understand that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present application. Among them:

[0034] Figure 1 is a schematic flow chart of main steps of a mode switching method according to an embodiment of the present application;

[0035] Figure 2 is the RGB Gamma voltage value under different electromagnetic pulses according to an example of an embodiment of the present application;

[0036] Figure 3 is a schematic diagram of the relationship between the RGB Gamma voltage value and the electromagnetic pulse according to an example of an embodiment of the present application;

[0037] Figure 4 is a flowchart of main steps of a mode switching method according to an implementation of an embodiment of the present application;

[0038] Figure 5 It is a schematic diagram comparing the mode switching method according to an embodiment of the present application and the mode switching in the prior art. DETAILED DESCRIPTION

[0039] Some embodiments of the present application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application and are not intended to limit the protection scope of the present application.

[0040] In the description of this application, "module" and "processor" may include hardware, software or a combination of the two. A module may include hardware circuits, various suitable sensors, communication ports, memories, and may also include software parts, such as program codes, or a combination of software and hardware. The term "A and / or B" means all possible combinations of A and B, such as just A, just B, or A and B. The term "at least one A or B" or "at least one of A and B" has a similar meaning to "A and / or B" and may include just A, just B, or A and B. The singular terms "a" and "the" may also include plural forms.

[0041] Here we first explain some terms involved in this application.

[0042] Gamma voltage refers to a form of expression of the source voltage of the display screen. The display control IC of the display screen controls the corresponding brightness of the display screen according to this voltage.

[0043] See attached Figure 1 , Figure 1 FIG. 1 is a flow chart of the main steps of a mode switching method according to an embodiment of the present application. Figure 1 As shown, the mode switching method in the embodiment of the present application mainly includes the following steps S101 to S104.

[0044] Step S101: In response to a mode switching instruction of a display screen, the screen brightness of the display screen at the current moment is obtained.

[0045] In this embodiment, when the display screen needs to switch modes, the screen brightness of the display screen at the current moment can be obtained in response to the mode switching instruction.

[0046] In one implementation, the screen brightness may be DBV brightness, wherein the DBV (a unit representing a voltage level) brightness control method uses DBV to define the backlight brightness. The DBV brightness may be divided into multiple intervals by DBV_TH (DBV brightness threshold), and DBV_TH is used to indicate that when the DBV reaches a certain DBV_TH, the corresponding Gamma voltage curve will be called, and these DBV_THs are DBV binding points.

[0047] In one implementation, the mode switching instruction is an instruction for controlling the display screen to switch between a high-frequency PWM (Pulse Width Modulation) mode and a global DC (Direct Current Dimming) mode.

[0048] Step S102: Obtain the Gamma voltage before and after the mode switching according to the screen brightness.

[0049] In this embodiment, the Gamma voltage before and after the display screen mode is switched can be obtained according to the screen brightness.

[0050] In one implementation, step S102 may further include the following steps S1021 to S1023:

[0051] Step S1021: According to the DBV brightness, respectively obtain the Gamma voltages of the two DBV binding points before and after the DBV brightness before mode switching, and the Gamma voltages of the two DBV binding points before and after the DBV brightness after mode switching.

[0052] Step S1022: Obtain the Gamma voltage before the mode switching according to the Gamma voltages of the two DBV binding points before and after the DBV brightness before the mode switching.

[0053] Step S1023: Obtain the Gamma voltage after the mode switching according to the Gamma voltages of the two DBV binding points before and after the DBV brightness after the mode switching.

[0054] In this embodiment, the Gamma voltages of the two DBV binding points before and after the DBV brightness before the mode switching and the Gamma voltages of the two DBV binding points before and after the DBV brightness after the mode switching can be obtained according to the DBV brightness. The Gamma voltage before the mode switching and the Gamma voltage after the mode switching can be obtained according to the Gamma voltages of the two DBV binding points before and after the mode switching.

[0055] In one implementation, a linear interpolation calculation may be performed based on the Gamma voltages of two DBV binding points to obtain the Gamma voltage corresponding to the DBV brightness.

[0056] Step S103: obtaining a transition Gamma voltage according to the Gamma voltages before and after the mode switching.

[0057] In this embodiment, one or more transitional Gamma voltages in the mode switching process may be obtained according to the Gamma voltages before and after the mode switching.

[0058] In one implementation, step S103 may be further configured as: performing linear interpolation calculation according to the Gamma voltages before and after the mode switching to obtain at least one transition Gamma voltage.

[0059] Specifically, linear interpolation calculation can be performed based on the 3DLUT (Look-Up-Table) interpolation algorithm according to the Gamma voltages before and after the mode switching to obtain at least one transition Gamma voltage. Among them, the first number of process Gamma voltages can be determined according to the first number of EM Pulses (electromagnetic pulses) that need to transition from the Gamma voltage before the mode switching to the Gamma voltage after the mode switching. For example, if the first number of EM Pulses is 15, and a transition Gamma voltage is determined for every 3 Pulses, then 4 transition Gamma voltages need to be calculated to achieve switching from the Gamma voltage before the mode switching to the Gamma voltage after the mode switching.

[0060] Step S104: switching the mode of the display screen according to the transitional Gamma voltage and the Gamma voltage after the mode switching.

[0061] In this embodiment, the mode of the display screen may be switched according to the transitional Gamma voltage and the Gamma voltage after the mode switching.

[0062] In one implementation, step S104 may further include the following steps S1041 to S1043:

[0063] Step S1041: Obtain a first quantity of transition Gamma voltage.

[0064] In this implementation, the number of acquired transition Gamma voltages may be determined as the first number.

[0065] Step S1042: rewriting the Gamma voltages of the first number of sequential frames of the display screen after the mode switching according to the first number, so that the Gamma voltage of each sequential frame is a transition Gamma voltage in sequence.

[0066] In this embodiment, the Gamma voltages of the first number of timing frames after the mode switching can be rewritten according to the first number of transitional Gamma voltages. That is, the Gamma voltages of the first number of timing frames after the mode switching are sequentially rewritten into corresponding transitional Gamma voltages, so that the Gamma voltage of the display screen gradually transitions from the Gamma voltage before the mode switching to the Gamma voltage after the mode switching.

[0067] In one implementation, the gamma voltage of the first number of sequential frames of the display screen after the mode switching can be rewritten based on the CMDQ frame execution function so that the gamma voltage of each sequential frame is a transition gamma voltage in sequence. Among them, CMDQ (Command Queue) is a hardware-accelerated command queue mechanism, which is usually used for image display and multimedia processing. CMDQ allows the CPU (Central Processing Unit) to submit a series of commands to the control unit in batches, so that these commands can be executed asynchronously in the hardware, thereby reducing CPU load and delay.

[0068] Step S1043: when the display of the first number of sequential frames is completed, setting the Gamma voltage of the subsequent sequential frames to the Gamma voltage after the mode switching.

[0069] In this implementation, after the first number of sequential frames are displayed, the Gamma voltage of the subsequent sequential frames may be set to the Gamma voltage after the mode is switched.

[0070] Based on the method described in steps S101 to S104 above, the embodiment of the present application responds to the mode switching instruction of the display screen, obtains the screen brightness of the display screen at the current moment, obtains the Gamma voltage before and after the mode switching according to the screen brightness, obtains the transition Gamma voltage according to the Gamma voltage before and after the mode switching, and performs the mode switching of the display screen according to the transition Gamma voltage and the Gamma voltage after the mode switching. Through the above configuration, the embodiment of the present application determines the Gamma voltage before and after the mode switching based on the screen brightness, obtains the transition Gamma voltage based on the Gamma voltage before and after the switching, and then transitions the Gamma voltage before the mode switching to the Gamma voltage after the mode switching according to the transition Gamma voltage, which can effectively avoid the situation where the Gamma voltage jumps significantly during the mode switching process, thereby effectively optimizing the screen flickering problem during the display screen mode switching process and effectively improving the user experience.

[0071] The following example uses the mode switching between high-frequency PWM mode and global DC mode as an example, combined with a specific example and combined with Figures 2 to 5 The mode switching method of the embodiment of the present application is further explained.

[0072] The fundamental reason for the screen flickering when the display screen switches between high-frequency PWM mode and global DC mode is that the high-frequency PWM mode has a higher EM Pulse number and a lower Duty (duty cycle) at low brightness DBV; while the EMPulse number of global DC dimming is 1 at full brightness, and the Duty (duty cycle) remains unchanged at about 98%. The timing of the two is quite different, so in order to ensure the same brightness, the Gamma voltage difference is relatively large. For the control chip, the switching timing is achieved through code instructions, and the switching is only a momentary process. However, due to the step-by-step transmission characteristics of the display screen panel Goa (Gate on Array), the Gamma voltage is updated to the panel through the OUT (output) signal of the P-Gate. Therefore, in the first timing frame of the switch, there must be a mismatch between the Gamma voltage and the timing, causing the switching flicker problem.

[0073] See attached Figure 2 , Figure 2 The data of the relationship between the change of three groups of RGB Gamma voltage and EM Pulse number are shown in the figure. Taking the first group as an example, in the global DC mode, when DBV brightness = 1163, 255 grayscale brightness is 70nit, EM Pulse number is 1, and Duty (duty cycle) is 97.36%, the corresponding RGB Gamma voltages are 9DC, 96D, and B40 respectively. Among them, the value of the above Gamma voltage is obtained by dividing the value range of the source voltage of the display screen into 4095 parts on average, and then converting each part into a hexadecimal number. In the high-frequency PWM mode, with the same DBV brightness, EM Pulse number is 18, Duty is 52.5%, and the corresponding RGB Gamma voltages are A7A, 9FB, and BFF respectively. When switching between the two modes, there will be a screen flickering phenomenon. Therefore, according to the mode switching method of the present application, the RGB Gamma voltage required for the EM Pulse number to gradually increase from 1 to 18 and the corresponding Duty to decrease from 97.36% to 52.5% can be collected.

[0074] like Figure 3 As shown, by collecting multiple data, it can be found that the RGB Gamma voltage increases with the increase of the EM Pulse number, and there is an approximately linear relationship between the RGB Gamma voltage and the EM Pulse (electromagnetic pulse). Figure 3 The horizontal axis is the Gamma value (ie, Gamma voltage), and the vertical axis is the EM Pulse number.

[0075] like Figure 4As shown, taking ILI97680A IC as the control chip of the mode switching method of the embodiment of the present application as an example, the IC supports the CMDQ frame execution function, which can transition the RGB Gamma voltage of the display screen frame by frame, effectively solving the problem of screen flicker. Specifically, the mode switching method of the embodiment of the present application can be implemented according to the following steps S201 to S204:

[0076] Step S201: When the display screen needs to switch modes, determine the DBV brightness of the current display screen.

[0077] Step S202: Obtaining the RGB Gamma voltages of the PWM mode and the global DC mode of the two binding points before and after the current DBV brightness from the RAM.

[0078] Step S203: Automatically calculate the difference through the 3D LUT IP module to obtain the transition Gamma voltage of the intermediate transition EM Pulse part, and then temporarily store it.

[0079] Step S204: According to the transition Gamma voltage obtained in the above steps, the RGB Gamma voltages corresponding to 3, 6, 9, 12, and 15 EM pulses are respectively used. The timing frame is modified through the CMDQ frame execution function, and the first timing frame after the mode switching is changed to the Gamma voltage corresponding to 3 pulses, and the second timing frame is changed to the Gamma voltage corresponding to 6 pulses, and so on, so that the Gamma voltage of the display screen gradually transitions to the Gamma voltage after the mode switching. The transition process is smoother, and the flickering display of the display screen is effectively reduced.

[0080] like Figure 5 As shown, Figure 5 (1) is a schematic diagram of the flickering waveform of the display screen when the display screen is directly switched to a mode; (2) is a schematic diagram of the flickering waveform of the display screen when the grayscale of the first frame after the mode switching is lowered and the second frame is restored to a normal grayscale to achieve the mode switching; (3) is a schematic diagram of the flickering waveform of the mode switching according to the mode switching method of the embodiment of the present application. Figure 5 It can be seen that the mode switching method of the embodiment of the present application can effectively suppress the flickering waveform during the mode switching process, thereby effectively solving the flickering problem of the display screen.

[0081] It should be pointed out that although the various steps in the above embodiments are described in a specific order, those skilled in the art can understand that in order to achieve the effect of the present application, different steps do not have to be executed in such an order. They can be executed simultaneously (in parallel) or in other orders. These adjusted schemes are equivalent to the technical schemes described in this application, and therefore will also fall within the scope of protection of this application.

[0082] It is understood by those skilled in the art that all or part of the processes in the method for implementing the above-mentioned embodiment of the present application can also be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable storage medium may include: any entity or device, medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory, random access memory, electrical carrier signal, telecommunication signal and software distribution medium, etc. that can carry the computer program code.

[0083] Another aspect of the present application also provides a computer-readable storage medium.

[0084] In an embodiment of a computer-readable storage medium according to the present application, the computer-readable storage medium may be configured to store a program for executing the mode switching method of the above-mentioned method embodiment, and the program may be loaded and run by a processor to implement the above-mentioned mode switching method. For ease of explanation, only the parts related to the embodiment of the present application are shown. For specific technical details not disclosed, please refer to the method part of the embodiment of the present application. The computer-readable storage medium may be a storage device formed by various electronic devices, such as a disk, a hard disk, an optical disk, a flash memory, a read-only memory, a random access memory, etc. Optionally, the computer-readable storage medium in the embodiment of the present application is a non-temporary computer-readable storage medium.

[0085] Another aspect of the present application also provides a controller.

[0086] In an embodiment of a controller according to the present application, the controller may include at least one processor; and a memory communicatively connected to the at least one processor; wherein a computer program is stored in the memory, and when the computer program is executed by the at least one processor, the method described in any of the above embodiments is implemented.

[0087] Furthermore, the present application also provides a display device.

[0088] In an embodiment of a display device according to the present application, the display device may include a display screen and a controller in the controller embodiment.

[0089] So far, the technical solution of the present application has been described in conjunction with an embodiment shown in the accompanying drawings, but it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present application.

Claims

1. A mode switching method, characterized in that: The method comprises: In response to a mode switching instruction of a display screen, obtaining the screen brightness of the display screen at a current moment; According to the screen brightness, obtaining the Gamma voltage before and after the mode switching; According to the Gamma voltages before and after the mode switching, a transition Gamma voltage is obtained; The mode of the display screen is switched according to the transitional Gamma voltage and the Gamma voltage after the mode switching.

2. The mode switching method according to claim 1, characterized in that: The step of obtaining a transitional Gamma voltage according to the Gamma voltages before and after the mode switching includes: A linear interpolation calculation is performed according to the Gamma voltages before and after the mode switching to obtain at least one of the transitional Gamma voltages.

3. The mode switching method according to claim 2, characterized in that: The step of performing linear interpolation calculation according to the Gamma voltages before and after the mode switching to obtain at least one of the transitional Gamma voltages includes: According to the Gamma voltages before and after the mode switching, a linear interpolation calculation is performed based on a 3D LUT interpolation algorithm to obtain at least one of the transition Gamma voltages.

4. The mode switching method according to claim 1, characterized in that: The step of switching the mode of the display screen according to the transitional Gamma voltage and the Gamma voltage after the mode switching comprises: Obtaining a first quantity of the transition Gamma voltage; According to the first number, rewriting the Gamma voltages of the first number of sequential frames of the display screen after mode switching, so that the Gamma voltage of each of the sequential frames is the transition Gamma voltage in sequence; When the display of the first number of sequential frames is completed, the Gamma voltage of the subsequent sequential frames is set to the Gamma voltage after the mode switching.

5. The mode switching method according to claim 4, characterized in that: The rewriting of the Gamma voltages of the first number of timing frames of the display screen after the mode switching includes: Based on the CMDQ frame execution function, the Gamma voltages of the first number of timing frames of the display screen after the mode switching are rewritten so that the Gamma voltage of each of the timing frames is the transition Gamma voltage in sequence.

6. The mode switching method according to claim 1, characterized in that: The screen brightness is DBV brightness; The obtaining of the Gamma voltage before and after the mode switching according to the screen brightness includes: According to the DBV brightness, respectively obtaining the Gamma voltages of the two DBV binding points before and after the DBV brightness before the mode switching, and the Gamma voltages of the two DBV binding points before and after the DBV brightness after the mode switching; According to the Gamma voltages of the two DBV binding points before and after the DBV brightness before the mode switching, obtaining the Gamma voltage before the mode switching; The Gamma voltage after the mode switching is obtained according to the Gamma voltages of the two DBV binding points before and after the DBV brightness after the mode switching.

7. The mode switching method according to any one of claims 1 to 6, characterized in that: The mode switching instruction is an instruction for controlling the display screen to switch between a high-frequency PWM mode and a global DC mode.

8. A controller, characterized in that: include: at least one processor; and, a memory communicatively coupled to the at least one processor; The memory stores a computer program, and when the computer program is executed by the at least one processor, the mode switching method according to any one of claims 1 to 7 is implemented.

9. A computer-readable storage medium storing a plurality of program codes, characterized in that: The program code is suitable for being loaded and run by a processor to execute the mode switching method according to any one of claims 1 to 7.

10. A display device, characterized in that: The display device comprises a display screen and the controller according to claim 8.

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