Control method and electronic equipment
By switching controller states and managing interface power supply, the high power consumption problem of electronic devices in multi-display scenarios is solved, achieving power consumption optimization and extended battery life, and avoiding display abnormalities.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- LENOVO (BEIJING) LTD
- Filing Date
- 2025-12-31
- Publication Date
- 2026-04-17
AI Technical Summary
When electronic devices display content on both the main display and the secondary display, the total power consumption is relatively high, which affects the device's battery life.
By switching controller states, power supply to the auxiliary and data interfaces is interrupted, reducing unnecessary data communication. Combined with preset information display and wake-up mechanisms, power consumption management of the display screen is optimized.
It effectively reduces the power consumption of electronic devices, extends battery life, and avoids display abnormalities such as black screen phenomena.
Smart Images
Figure CN121879698A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of computer technology, and more specifically, to a control method and electronic device. Background Technology
[0002] Many electronic devices nowadays have dual or even more displays to meet user needs in different scenarios. When both the main and secondary displays of an electronic device are showing content, the total power consumption can be quite high, impacting battery life. Summary of the Invention
[0003] In view of the above, this application provides the following technical solution:
[0004] A first aspect of this application provides a control method, the method comprising:
[0005] The first processor sends a first instruction to the first chip, so that the first chip uses the first instruction to control the state of the first controller;
[0006] The first controller enters a first state based on the first instruction. In the first state, the first controller controls the interruption of power supply to the auxiliary interface, and data communication between the first controller and the first processor is stopped. The auxiliary interface is used to transmit data other than image data and audio data, and the other data includes at least handshake parameters.
[0007] In one possible implementation, the method further includes:
[0008] The first controller controls the power supply to the data interface based on the first instruction control interrupt. The data interface is used to receive the output data of the first protocol sent by the first chip. The output data includes image data and / or audio data. The output data of the first protocol is obtained by the first chip based on the output data of the second protocol received from the first processor.
[0009] In one possible implementation, after the first controller interrupts the power supply to the auxiliary interface, the following is also included:
[0010] The first controller sends a first indication signal to the first chip, the first indication signal being used to indicate that the first controller is currently in the first state;
[0011] The first chip sends a second indication signal to the first controller based on the first indication signal, the second indication signal being used to instruct the first controller to maintain the first state;
[0012] The first controller acquires preset information and displays it on the screen.
[0013] One possible implementation also includes:
[0014] After detecting that there is updated content to be displayed, the first processor controls the wake-up of the first controller in the first state, so that the first controller enters the second state. In the second state, the first controller controls the power supply to the auxiliary interface, and data communication can be realized between the first controller and the first processor.
[0015] In one possible implementation, the control to wake up the first controller includes:
[0016] The first processor sends a second instruction to the first chip;
[0017] The first chip uses a second instruction to send a third indication signal to the first controller, the third indication signal being used to instruct the first controller to enter a second state;
[0018] The first controller enters the second state based on the third indication signal.
[0019] In one possible implementation, the first controller enters a second state based on the third indication signal, including:
[0020] The first controller supplies power to the auxiliary interface based on the third indication signal and establishes a communication connection with the first chip based on the auxiliary interface.
[0021] In one possible implementation, after the first controller supplies power to the auxiliary interface based on the third indication signal and establishes a communication connection with the first chip based on the auxiliary interface, it further includes:
[0022] The first controller supplies power to the data interface.
[0023] In one possible implementation, the first processor has any one of the following capabilities to send a first instruction to the first chip:
[0024] The duration for which the content to be displayed by the first controller has not been updated reaches a duration threshold;
[0025] It is determined that the display module to which the first controller belongs is in an idle state.
[0026] A second aspect of this application provides an electronic device including a first body and a second body, the first body and the second body being movable relative to each other, the first body having a first processor, and the second body having a first chip and a first controller, the first controller being used to control the display screen on the second body, wherein:
[0027] When the first condition is met, the first processor sends a first instruction to the first chip, so that the first chip uses the first instruction to control the state of the first controller.
[0028] The first controller enters a first state based on the first instruction. In the first state, the first controller controls the interruption of power supply to the auxiliary interface, and data communication between the first controller and the first processor is stopped. The auxiliary interface is used to transmit data other than image data and audio data, and the other data includes at least handshake parameters.
[0029] In one possible implementation, the first processor is at least used to output content to be displayed according to the second protocol, the first chip is used to convert the content to be displayed according to the second protocol into content to be displayed according to the first protocol, and the first controller is used to control the content to be displayed according to the first protocol to be output and displayed in the display module. Attached Figure Description
[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0031] Figure 1 This is a flowchart of a control method disclosed in an embodiment of this application;
[0032] Figure 2 This is a schematic diagram of the control scheme implementation architecture disclosed in the embodiments of this application;
[0033] Figure 3 This is a flowchart of the control wake-up process for the first controller disclosed in an embodiment of this application;
[0034] Figure 4 This is a schematic diagram illustrating the implementation process of the control scheme disclosed in the embodiments of this application;
[0035] Figure 5 This is a schematic diagram of the structure of an electronic device disclosed in an embodiment of this application;
[0036] Figure 6 This is a schematic diagram of the form of the customized device disclosed in the embodiments of this application. Detailed Implementation
[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0038] The embodiments of this application can be applied to electronic devices. This application does not limit the product form of the electronic device, which may include but is not limited to smartphones, tablets, wearable devices, personal computers (PCs), netbooks, etc., and can be selected according to application requirements.
[0039] Figure 1 This is a flowchart illustrating a control method disclosed in an embodiment of this application. The control method is applied to an electronic device having at least two displays. See also... Figure 1 As shown, the control method may include:
[0040] Step 101: The first processor sends a first instruction to the first chip, so that the first chip uses the first instruction to control the state of the first controller.
[0041] The first processor is a processor on the motherboard of the electronic device, while the first chip and the first controller can be a chip and controller on the secondary screen or extended screen of the electronic device. The first processor sends the processed image data to the secondary screen or extended screen. The first chip and the first controller in the secondary screen or extended screen process the image data sent by the first processor to obtain display content and send it to the display module for output. The secondary screen or extended screen can be fixedly installed in the electronic device or can be a detachable structure.
[0042] The control method disclosed in this embodiment aims to control the state of the first controller in a secondary or extended screen under specific scenarios, thereby saving power consumption. Specific scenarios include situations where the duration for which the display content to be output by the first controller has not been updated reaches a duration threshold, and / or, determining that the display module to which the first controller belongs is in an idle state. When any of the above scenarios are met, the first processor sends a first instruction to the first chip.
[0043] On the secondary screen, the first chip is used to communicate directly with the first processor, and the data communication between the first controller and the first processor is also controlled by the first chip. Figure 2 This is a schematic diagram of the control scheme implementation architecture disclosed in an embodiment of this application. (In conjunction with...) Figure 2As shown in one example, the first chip can be a protocol conversion chip, which can realize communication control between the first processor and the first controller, and can also perform protocol conversion on the display data sent by the first processor. The first controller can be a Tcon (timing control chip), used to control the output of display data in the display module. The first processor can be a CPU (Central Processing Unit) or a GPU (Graphics Processing Unit).
[0044] If the first processor detects that there is no content being updated on the secondary screen (e.g., the operating system or GPU detects no content updates on the secondary screen and enters an idle state), it can send a first instruction to the first chip. This first instruction triggers the first controller to enter a first state. Upon receiving the first instruction, the first chip forwards it to the first controller. Combined with... Figure 2 In one exemplary implementation, when the GPU determines that there is no content update on the secondary screen via the DisplayPort Configuration Protocol register (a register in the DisplayPort interface used to configure and manage display devices), it can write a first instruction to the Tcon's DPCP register through the existing AUX (Auxiliary Channel, an independent bidirectional transmission channel mainly used for inter-device communication and configuration management) channel to notify the Tcon to enter a low-power state. Therefore, the first instruction can be considered as an instruction to notify the first controller to enter a low-power state.
[0045] Step 102: The first controller enters a first state based on the first instruction. In the first state, the first controller controls the interruption of power supply to the auxiliary interface, and data communication between the first controller and the first processor is stopped. The auxiliary interface is used to transmit data other than image data and audio data, and the other data includes at least handshake parameters.
[0046] Upon receiving the first instruction, the first controller enters a first state, meaning that, based on the current absence of content updates, it closes its communication connection with the first processor, effectively interrupting power supply to the auxiliary interface to reduce device power consumption. Subsequently, when content updates are displayed on the secondary screen, the auxiliary interface channel between the first controller and the first processor can be re-established to achieve the corresponding content update display.
[0047] The control method described in this embodiment can issue a first instruction when the first processor determines that it is in a set scenario. The first controller can then enter a first state based on the first instruction, interrupt the power supply to its auxiliary interface, and close the blocked interface channel between it and the first processor, thereby reducing power consumption and extending the device's battery life.
[0048] In one implementation, the control method may further include: the first controller controlling an interrupt to power the data interface based on the first instruction, the data interface being used to receive output data of a first protocol sent by the first chip, the output data including image data and / or audio data, the output data of the first protocol being obtained by the first chip through conversion processing based on output data of a second protocol received from the first processor.
[0049] Before the first controller interrupts power the auxiliary interface, it can first control the interrupt to power the data interface. The data interface connects the first controller and the first chip to a data channel used for transmitting audio and / or images (corresponding to...). Figure 2 The Main-Link channel (which is the data channel used to transmit content output to the user) is an independent channel from the auxiliary interface channel (AUX channel). The data interface and the auxiliary interface are also two different interfaces.
[0050] The first chip's main processing function is to convert data sent by the first processor using a first protocol into data using a second protocol. The first protocol can be the USB protocol (e.g.,...). Figure 2 (As shown in USB 3.0), the second protocol can be the EDP protocol.
[0051] In one example, the implementation of the control method may include: 1. After receiving the first instruction, Tcon completes the final operation (outputs the last received frame image from the local frame buffer) and prepares to enter a low-power state, returning a message indicating that the first instruction has been received; 2. Tcon first controls the shutdown of the high-speed Main Link data channel; 3. The GPU and Tcon exchange the last information through AUX, and then Tcon detects that the AUX signal has been silent for a long time and shuts down its AUX channel.
[0052] Because the AUX channel can transmit handshake parameters and configuration parameters, when it is effectively connected to the first processor and the first controller, the first processor can always identify or determine the identity information of the first controller. If, after receiving the first instruction, the first controller disconnects the AUX channel (interrupting the power supply to the auxiliary interface) and then disconnects the data channel (interrupting the power supply to the data interface), a black screen on the secondary screen may occur due to the loss of identity information. However, if the data channel is disconnected first and then the AUX channel is disconnected, the black screen situation that may be caused by the aforementioned hard power cut will not occur.
[0053] In one implementation, after the first controller interrupts the power supply to the auxiliary interface, the process may further include: the first controller sending a first indication signal to the first chip, the first indication signal indicating that the first controller is currently in the first state; the first chip sending a second indication signal to the first controller based on the first indication signal, the second indication signal indicating that the first controller is currently maintaining the first state; and the first controller acquiring preset information and displaying it on the display screen. Both the first indication signal and the second indication signal can be level signals.
[0054] In this implementation, after the control interruption of power supply to the auxiliary interface, that is, after the first controller enters the first state, it will send a first indication signal to the first chip to indicate that the first chip has entered the first state; see also Figure 2 In one implementation, the first controller (Tcon) can indicate that it has entered a first state via an HPD (Hot plug detect) signal, meaning it cannot communicate with the first processor; this state can be called a sleep state. After receiving the first indication signal, the first chip sends a second indication signal to the first controller, instructing it to remain in the first state, i.e., maintain a low-power state. Only when the first processor detects that the secondary screen needs to update its display content will it wake up the first controller in the low-power state and re-establish a communication connection with it.
[0055] Furthermore, since a black screen may occur on the secondary screen after the data channel and AUX channel are disconnected, to solve this problem, the first controller can obtain preset information and display it on the display screen, i.e., on the secondary screen, before or at the moment of disconnection. This resolves the black screen issue that may occur when the first controller interrupts power supply to the auxiliary interface. The preset information may be the last frame image received by the first controller from the first processor (first chip).
[0056] After the first controller enters the first state, if the first processor determines that there is updated display content on the secondary screen, it needs to wake up the first controller in the first state and re-handshake with the first controller so that the display content to be updated can be transmitted to the first controller so that it can control the output of the updated display content.
[0057] Therefore, the control method may further include: after the first processor detects that there is updated content to be displayed, it controls the wake-up of the first controller in the first state, so that the first controller enters the second state. In the second state, the first controller controls the power supply to the auxiliary interface, and data communication can be realized between the first controller and the first processor.
[0058] Figure 3 This is a flowchart illustrating the control and wake-up process of the first controller as disclosed in an embodiment of this application. See also... Figure 3 As shown, the control to wake up the first controller may include:
[0059] Step 301: The first processor sends a second instruction to the first chip.
[0060] When the first processor detects that there is content on the secondary screen that needs to be updated, it sends a second instruction to the first controller. Since it is not directly connected to the first controller, it still needs to send the second instruction to the first chip, which then controls the state of the first controller based on the first instruction. The second instruction can be considered as a wake-up instruction for the first controller, which can restore the first controller from a low-power state to a normal operating state.
[0061] Step 302: The first chip uses the second instruction to send a third indication signal to the first controller, the third indication signal being used to indicate that the first controller enters the second state.
[0062] Among them, the third indication signal (corresponding to) Figure 2 The wake signal in the code can be a level signal, which is output through the same port (called the wake-up port) as the second indicator signal. For example, when Tcon is in the first state, the first chip outputs a low level to the wake-up port, and when Tcon needs to be woken up (after receiving the second instruction), the first chip outputs a high level to the wake-up port.
[0063] Step 303: The first controller enters the second state based on the third indication signal.
[0064] The first controller detects that the level of the wake-up port changes from low to high, determines that it needs to switch to the second state, and then starts the control to enter the normal working state.
[0065] Specifically, the first controller entering the second state based on the third indication signal may include: the first controller supplying power to the auxiliary interface based on the third indication signal, and establishing a communication connection with the first chip based on the auxiliary interface.
[0066] After the first controller supplies power to the auxiliary interface, the AUX channel is activated, and the first processor can re-handshake with the first controller, exchanging handshake parameters and establishing a communication connection. In some implementations, the first processor and the first controller can save some parameters before disconnecting the AUX channel, such as EDID (Extended Display Identification Data) and refresh rate. This way, when the first processor and the first controller re-handshake, only the changed parameters are sent, while the unchanged parameters can be reused from the previously saved ones, thus speeding up the handshake process.
[0067] Furthermore, after the first controller supplies power to the auxiliary interface based on the third indication signal and establishes a communication connection with the first chip based on the auxiliary interface, it may also include: the first controller supplying power to the data interface.
[0068] The first controller supplies power to the data interface, and the data channel for transmitting image data is activated. The first processor can send the display data that needs to be updated to the first controller via the first chip, so that the updated display content can be output by the display module.
[0069] In this embodiment, when the first control module in the first state needs to be woken up, the AUX channel is restored first, and then the data channel is restored. This ensures that when the first control receives the image data that needs to be processed, it can process the image data according to the parameters transmitted or determined by the first processor, so as to ensure that the display content output by the display module will not be wrong.
[0070] In one example, waking Tcon from a low-power state can be implemented as follows: The GPU detects an update to the display content on the secondary screen and sends a wake-up command (corresponding to the first command mentioned above) to the first chip via the USB 3.0 bus of the PogoPin (spring pin). Upon receiving the wake-up command, the first chip pulls up the wake signal, which was originally low (corresponding to the third indicator signal). Tcon determines the level change of the wake signal, pulls up the HPD signal, which was originally low, and simultaneously supplies power to the auxiliary interface, entering a preparation state to restore the AUX channel. Upon receiving the level change of the HPD signal, the first chip cooperates with Tcon to connect the AUX channel and begins communication with Tcon through the AUX channel. After the AUX channel communication is successful, the Main link channel is restored, and then image data is transmitted through the Main link channel. Tcon processes the received image data and outputs it to the display module.
[0071] Figure 4 This is a schematic diagram illustrating the implementation process of the control scheme disclosed in the embodiments of this application. (In conjunction with...) Figure 4 As shown, in a specific implementation example, if the detachable secondary screen in the electronic device is in an idle state, the Main link and AUX channel are turned off to maximize power saving. When the GPU sends a wake-up command to the DL7200 via the Pogopin USB3 bus, the DL7200 can wake up the Tcon from its power-saving state through a hardware signal change. This achieves the following: minimizing screen power consumption during inactivity while ensuring a fast and reliable wake-up process to avoid display anomalies. Some control processes in the implementation include:
[0072] 1. Entering sleep mode: orderly handshake, following the EDP protocol sequence, and cannot be hard-cut off;
[0073] 2. Deep sleep: Main link is off, Aux channel is off, and Tcon retains only the lowest power logic;
[0074] 3. Trigger wake-up: User operation—DL7200—Tcon, using the hardware wake signal to replace the AUX being turned off;
[0075] 4: Wake-up and recovery: wake—HPD—AUX link—Main Link.
[0076] The above processes can be combined Figure 4 And the corresponding content in the preceding embodiments.
[0077] For the foregoing method embodiments, in order to simplify the description, they are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, because according to this application, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to this application.
[0078] The methods described in the above-disclosed embodiments of this application are detailed in terms of the methods. The methods of this application can be implemented by various forms of apparatus. Therefore, this application also discloses an apparatus. Specific embodiments are given below for detailed description.
[0079] This application discloses a control device, which may include: an instruction sending module, configured to send a first instruction to a first chip when a first processor determines that a first condition is met, so that the first chip uses the first instruction to control the state of a first controller; and a state control module, configured to control the first controller to enter a first state based on the first instruction, wherein in the first state, the first controller controls the interruption of power supply to an auxiliary interface, and data communication between the first controller and the first processor is stopped, wherein the auxiliary interface is used to transmit data other than image data and audio data, and the other data includes at least handshake parameters.
[0080] The control device described in this embodiment can issue a first instruction when the first processor determines that it is in a set scenario. The first controller can then enter a first state based on the first instruction, interrupt the power supply to its auxiliary interface, and close the blocked interface channel between it and the first processor, thereby reducing power consumption and extending the device's battery life.
[0081] The control device in the above embodiments includes a processor and a memory. The instruction sending module, the status control module, and other functional modules that may be included in the control device are all stored in the memory as program modules. The processor executes the program modules stored in the memory to implement the corresponding functions.
[0082] The processor contains a kernel, which retrieves the corresponding program modules from memory. One or more kernels can be configured, and the processing of backtracking data can be achieved by adjusting kernel parameters.
[0083] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.
[0084] In an exemplary embodiment, a computer-readable storage medium is also provided, which can be directly loaded into the internal memory of a computer and contains software code. After being loaded and executed by the computer, the computer program can implement the steps shown in any of the embodiments of the control method described above.
[0085] In an exemplary embodiment, a computer program product is also provided, which can be directly loaded into the internal memory of a computer and contains software code. After being loaded and executed by the computer, the computer program can implement the steps shown in any embodiment of the control method described above.
[0086] Furthermore, embodiments of this application provide an electronic device. Figure 5 This is a schematic diagram of the structure of an electronic device disclosed in an embodiment of this application. Figure 6 This is a schematic diagram of the customized device disclosed in an embodiment of this application, indicating a first display screen, i.e., the main display screen of the electronic device, whose secondary screen may be located behind the first display screen, i.e., the A-side of a laptop computer. Combined with... Figure 5 and Figure 6 As shown. The electronic device may include a first body 51 and a second body 52, which are movable relative to each other. The first body has a first processor 501, and the second body has a first chip 502 and a first controller 503. The first controller is used to control the display screen on the second body, wherein:
[0087] When the first condition is met, the first processor sends a first instruction to the first chip, so that the first chip uses the first instruction to control the state of the first controller.
[0088] The first controller enters a first state based on the first instruction. In the first state, the first controller controls the interruption of power supply to the auxiliary interface, and data communication between the first controller and the first processor is stopped. The auxiliary interface is used to transmit data other than image data and audio data, and the other data includes at least handshake parameters.
[0089] In one implementation, the first processor is at least used to output content to be displayed according to the second protocol, the first chip is used to convert the content to be displayed according to the second protocol into content to be displayed according to the first protocol, and the first controller is used to control the content to be displayed according to the first protocol to be output and displayed in the display module.
[0090] In this embodiment, when the first processor determines that it is in a set scenario, the electronic device can issue a first instruction. The first controller can then control the device to enter a first state based on the first instruction, interrupt the power supply to its auxiliary interface, and close the blocked interface channel between it and the first processor, thereby reducing power consumption and extending the device's battery life.
[0091] For details on the specific implementation of each functional component or module in the above-mentioned control device and electronic device, please refer to the corresponding part of the method embodiment, which will not be repeated here.
[0092] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.
[0093] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0094] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.
[0095] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A control method, the method comprising: The first processor sends a first instruction to the first chip, so that the first chip uses the first instruction to control the state of the first controller; The first controller enters a first state based on the first instruction. In the first state, the first controller controls the interruption of power supply to the auxiliary interface, and data communication between the first controller and the first processor is stopped. The auxiliary interface is used to transmit data other than image data and audio data, and the other data includes at least handshake parameters.
2. The control method according to claim 1, further comprising: The first controller controls the power supply to the data interface based on the first instruction control interrupt. The data interface is used to receive the output data of the first protocol sent by the first chip. The output data includes image data and / or audio data. The output data of the first protocol is obtained by the first chip based on the output data of the second protocol received from the first processor.
3. The control method according to claim 2, further comprising, after the first controller interrupts the power supply to the auxiliary interface: The first controller sends a first indication signal to the first chip, the first indication signal being used to indicate that the first controller is currently in the first state; The first chip sends a second indication signal to the first controller based on the first indication signal, the second indication signal being used to instruct the first controller to maintain the first state; The first controller acquires preset information and displays it on the screen.
4. The control method according to claim 2 further includes: After detecting that there is updated content to be displayed, the first processor controls the wake-up of the first controller in the first state, so that the first controller enters the second state. In the second state, the first controller controls the power supply to the auxiliary interface, and data communication can be realized between the first controller and the first processor.
5. The control method according to claim 4, wherein the control wake-up of the first controller includes: The first processor sends a second instruction to the first chip; The first chip uses a second instruction to send a third indication signal to the first controller, the third indication signal being used to instruct the first controller to enter a second state; The first controller enters the second state based on the third indication signal.
6. The control method according to claim 5, wherein the first controller enters a second state based on the third indication signal, comprising: The first controller supplies power to the auxiliary interface based on the third indication signal and establishes a communication connection with the first chip based on the auxiliary interface.
7. The control method according to claim 6, further comprising, after the first controller supplies power to the auxiliary interface based on the third indication signal and establishes a communication connection with the first chip based on the auxiliary interface: The first controller supplies power to the data interface.
8. The control method according to claim 1, wherein The first processor sends a first instruction to the first chip if it has any one of the following capabilities: The duration for which the content to be displayed by the first controller has not been updated reaches a duration threshold; It is determined that the display module to which the first controller belongs is in an idle state.
9. An electronic device comprising a first body and a second body, the first body and the second body being movable relative to each other, the first body having a first processor, the second body having a first chip and a first controller, the first controller being configured to control the display screen on the second body, wherein: When the first condition is met, the first processor sends a first instruction to the first chip, so that the first chip uses the first instruction to control the state of the first controller. The first controller enters a first state based on the first instruction. In the first state, the first controller controls the interruption of power supply to the auxiliary interface, and data communication between the first controller and the first processor is stopped. The auxiliary interface is used to transmit data other than image data and audio data, and the other data includes at least handshake parameters.
10. The electronic device according to claim 9, wherein the first processor is at least configured to output content to be displayed in a second protocol, the first chip is configured to convert the content to be displayed in the second protocol into content to be displayed in a first protocol, and the first controller is configured to control the content to be displayed in the first protocol to be output and displayed in the display module.