Display device and standby wake-up method

Abstract

The embodiment of the invention provides a display device and a standby wake-up method, and the method can respond to a data exchange message sent when an external device is started up in a standby state of the display device, and send preset expansion display identification data in a power management module to the external device. And receiving a wake-up message sent by the external device based on the expansion display identification data. And responding to the wake-up message, notifying the power management module to be powered on and started up, and notifying the external equipment to resend the data exchange message. And responding to the data exchange information, and sending the expanded display identification data newly written into the memory to the external equipment, so that the external equipment sends the port information based on the new expanded identification data. And setting a signal source channel according to the port information, and displaying a display picture of the signal source channel. According to the method, the reliability of the standby wake-up function in the display equipment can be improved, the signal source channel of the display equipment can be automatically switched, and the use experience of a user can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of display devices, and in particular to a display device and a standby wake-up method. Background Art

[0002] A display device is an intelligent device that can present a user interface and support user interaction. A device interface may be provided on the display device, and the display device may be connected to an external device through the device interface to achieve data interaction with the external device. For example, a display device may be connected to an external device such as a set-top box through a High Definition Multimedia Interface (HDMI). After connecting to an external device such as a set-top box, the display device may obtain a signal source provided by the set-top box through the HDMI interface to display the media resource screen corresponding to the signal source.

[0003] The device interface of some display devices also supports mutual control with external devices. For example, the HDMI-CEC (High Definition on Multimedia Interface-Consumer Electronics Control) standard allows devices to communicate with each other and exchange information. The display device can realize the standby wake-up function with the external device based on HDMI-CEC communication. For example, the display device and the external device are connected through the HDMI interface, and the display device and the external device are both in standby mode. At this time, the user turns on the external device, and the external device will send a wake-up message to the display device in standby mode through HDMI-CEC communication to wake up the display device. After the display device is awakened and enters the running state, it automatically switches the HDMI signal source to play the media content provided by the external device.

[0004] However, in some scenarios, the display device in standby mode may not have completed its initialization procedure, and the external device cannot read the necessary information of the display device. At this time, the external device will mistakenly determine that the display device is not currently connected, so it will not send a wake-up message to the display device, causing the standby wake-up function between the external device and the display device to fail, reducing the user experience. Summary of the invention

[0005] The present application provides a display device and a standby wake-up method to solve the problem of failure of the standby wake-up function of the display device.

[0006] In a first aspect, some embodiments of the present application provide a display device, including a display, a device interface, a power management module, a memory, and a controller. The display is configured to display a display screen of a signal source channel; the device interface is configured to connect an external device; the power management module is used to at least control the power-off or power-on of the display so that the display device is in a standby state or a power-on state; the memory is used to store extended display identification data; and the controller is configured to execute the following program steps:

[0007] In the standby state, in response to a first data exchange message sent when the external device is turned on, reading first identification data in the power management module, the first identification data being extended display identification data pre-stored in the power management module;

[0008] Sending the first identification data to the external device, and receiving a wake-up message sent by the external device based on the first identification data;

[0009] In response to the wake-up message, instruct the power management module to power on, so that the display device switches to the power-on state;

[0010] resetting a hot plug detection signal of the device interface so that the external device sends a second data exchange message in response to the hot plug signal;

[0011] receiving the second data exchange message, and in response to the second data exchange message, reading second identification data in a memory, wherein the second identification data is extended display identification data written by the controller when the display device is switched to the power-on state;

[0012] sending the second identification data to the external device, so that the external device sends the port information of the device interface based on the second identification data;

[0013] A signal source channel is set according to the port information, and the display is controlled to display a display screen of the signal source channel.

[0014] In the second aspect, some embodiments of the present application also provide a standby wake-up method, which is applied to the display device provided in the first aspect, and the display device includes a display, a device interface, a power management module, a memory and a controller. Among them, the display is configured to display the display screen of the signal source channel; the device interface is configured to connect an external device; the power management module is used to at least control the power off or power on of the display to put the display device in a standby state or a power-on state; the memory is used to store extended display identification data. The method includes the following steps:

[0015] In the standby state, in response to a first data exchange message sent when the external device is turned on, first identification data is read in the power management module, where the first identification data is the extended display identification data pre-stored in the power management module;

[0016] Sending the first identification data to the external device, and receiving a wake-up message sent by the external device based on the first identification data;

[0017] In response to the wake-up message, instruct the power management module to power on, so that the display device switches to the power-on state;

[0018] resetting a hot plug detection signal of the device interface so that the external device sends a second data exchange message in response to the hot plug signal;

[0019] receiving the second data exchange message, and in response to the second data exchange message, reading second identification data in a memory, wherein the second identification data is extended display identification data written by the controller when the display device is switched to the power-on state;

[0020] sending the second identification data to the external device, so that the external device sends the port information of the device interface based on the second identification data;

[0021] A signal source channel is set according to the port information, and the display is controlled to display a display screen of the signal source channel.

[0022] It can be seen from the above technical scheme that the display device and standby wake-up method provided by some embodiments of the present application can receive the data exchange message sent when the external device is turned on in the standby state of the display device, and read the preset extended display identification data in the power management module in response to the data exchange message, and then send the read extended display identification data to the external device, so that the external device sends a wake-up message to the display device based on the received extended display identification data. Then in response to the wake-up message, notify the power management module to switch to the power-on state, and re-pull the hot plug detection signal of the device interface, so that the external device responds to the hot plug detection signal and re-sends the data exchange message to the display device. After receiving the data exchange message, the display device reads the newly written extended display identification data in the memory when the display device switches to the power-on state, and sends the read extended display identification data to the external device again, so that the external device sends port information to the display device according to the new extended display identification data. Then set the corresponding signal source channel according to the port information, so that the display device can display the display screen corresponding to the signal source channel. The method can not only improve the reliability of the standby wake-up function in the display device, but also enable the display device to correctly display the display picture corresponding to the signal source channel after waking up, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram showing usage scenarios of a display device in some embodiments of the present application;

[0025] Figure 2 A hardware configuration block diagram of a control device provided in some embodiments of the present application;

[0026] Figure 3 A hardware configuration block diagram of a display device provided in some embodiments of the present application;

[0027] Figure 4 A schematic diagram of the connection relationship between a display device and an external device provided in some embodiments of the present application;

[0028] Figure 5 A schematic diagram of software configuration in a display device provided in some embodiments of the present application;

[0029] Figure 6 A schematic diagram of the interaction of an HDMI interface provided in some embodiments of the present application;

[0030] Figure 7 A schematic diagram of joint control between a display device and an external device provided in some embodiments of the present application;

[0031] Figure 8 A schematic diagram showing a display device in a standby state during a joint control process provided by some embodiments of the present application;

[0032] Fig. 9 A schematic diagram of a process of waking up a display device and an external device from standby mode provided in some embodiments of the present application;

[0033] Fig.10 A flowchart of a standby wake-up method provided in some embodiments of the present application;

[0034] Fig.11 A flowchart of EDID detection provided for some embodiments of the present application;

[0035] Fig.12 A schematic diagram of a process for sending port information provided in some embodiments of the present application;

[0036] Fig.13An interactive diagram of a display device and an external device waking up from standby mode provided in some embodiments of the present application. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the exemplary embodiments of the present application clearer, the technical solutions in the exemplary embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0038] Based on the exemplary embodiments shown in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. In addition, although the disclosure in this application is introduced according to one or several exemplary examples, it should be understood that each aspect of these disclosures can also constitute a complete technical solution separately.

[0039] It should be understood that the terms "first", "second", "third", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, for example, they can be implemented according to an order other than those given in the diagrams or descriptions of the embodiments of this application.

[0040] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such products or devices.

[0041] The display device provided in the embodiments of the present application may have various implementation forms, for example, it may be a television, a smart television, a laser projection device, a monitor, an electronic whiteboard (electronic bulletin board), an electronic table (electronic table), etc. Figure 1 and Figure 3 This is a specific implementation of the display device of the present application.

[0042] Figure 1 FIG. 1 is a schematic diagram of an operation scenario between a display device and a control device according to an embodiment. Figure 1 As shown, the user can operate the display device 200 through the smart device 300 or the control device 100 .

[0043] In some embodiments, the control device 100 may be a remote controller, and the communication between the remote controller and the display device includes infrared protocol communication or Bluetooth protocol communication, and other short-range communication methods, and the display device 200 is controlled wirelessly or wired. The user may control the display device 200 by inputting user commands through buttons on the remote controller, voice input, control panel input, etc.

[0044] In some embodiments, a smart device 300 (such as a mobile terminal, a tablet computer, a computer, a laptop computer, etc.) may also be used to control the display device 200. For example, the display device 200 is controlled using an application running on the smart device.

[0045] In some embodiments, the display device 200 may not use the above-mentioned smart device or control device to receive instructions, but may receive user control through touch or gestures.

[0046] In some embodiments, the display device 200 can also be controlled in a manner other than the control device 100 and the smart device 300. For example, the user's voice command control can be directly received through a module for obtaining voice commands configured inside the display device 200, or the user's voice command control can be received through a voice control device set outside the display device 200.

[0047] In some embodiments, the display device 200 also communicates data with the server 400. The display device 200 may be allowed to communicate via a local area network (LAN), a wireless local area network (WLAN), and other networks. The server 400 may provide various content and interactions to the display device 200. The server 400 may be one cluster or multiple clusters, and may include one or more types of servers.

[0048] Figure 2 Schematically shows a configuration block diagram of the control device 100 according to an exemplary embodiment. Figure 2 As shown, the control device 100 includes a device controller 110, a communication interface 130, a user input / output interface 140, a memory, and a power supply. The control device 100 can receive input operation instructions from the user, and convert the operation instructions into instructions that the display device 200 can recognize and respond to, playing the role of an interactive intermediary between the user and the display device 200.

[0049] like Figure 3 As shown, the display device 200 includes at least one of a tuner and demodulator 210 , a communicator 220 , a detector 230 , a device interface 240 , a controller 250 , a display 260 , an audio output interface, a memory 290 , a power supply, and a communication device interface 280 .

[0050] In some embodiments, the controller includes a processor, a video processor, an audio processor, a graphics processor, a RAM, a ROM, and a first interface to an nth interface for input / output.

[0051] The display 260 includes a display screen component for presenting images, and a driving component for driving image display, which is used to receive image signals output from the controller, and display video content, image content, and menu control interface components and user control UI interface.

[0052] The display 260 may be a liquid crystal display, an OLED display, or a projection display, and may also be a projection device and a projection screen.

[0053] The communicator 220 is a component for communicating with an external device or server according to various communication protocol types. For example, the communicator may include at least one of a Wifi module, a Bluetooth module, a wired Ethernet module, and other network communication protocol chips or near field communication protocol chips, and an infrared receiver. The display device 200 may establish transmission and reception of control signals and data signals with the control device 100 or the server 400 through the communicator 220.

[0054] The communication device interface 280 may be used to receive a control signal from the control device 100 (eg, an infrared remote controller, etc.).

[0055] The detector 230 is used to collect signals from the external environment or the external interaction. For example, the detector 230 includes a light receiver, a sensor for collecting the intensity of ambient light; or, the detector 230 includes an image collector, such as a camera, which can be used to collect external environment scenes, user attributes or user interaction gestures; or, the detector 230 includes a sound collector, such as a microphone, etc., for receiving external sounds.

[0056] In some embodiments, the device interface 240 is a component used to establish a communication connection between the display device 200 and the external device 500. The device interface 240 includes, but is not limited to, any one or more interfaces such as a high-definition multimedia interface (HDMI), an analog or digital high-definition component input interface (component), a composite video input interface (CVBS), a universal serial bus (USB) input interface, and an RGB port. It can also be a composite input / output interface formed by the above multiple interfaces.

[0057] The connection between the display device 200 and the external device 500 refers to establishing a communication connection, and the display device 200 and the external device 500 that establish the communication connection serve as a receiving end (Sink end) and a sending end (Source end), respectively. The external device 500 may be a set-top box, a game console, or a computer. For example, the external device 500 may be a set-top box. When the user uses the set-top box, the set-top box can analyze the signal data in the signal source, output video data and audio data in real time, and send the video data and audio data to the display device 200, so that the video data and audio data are output as video images and sounds through the display device 200. At this time, the set-top box device serves as a sending end, and the display device 200 serves as a receiving end.

[0058] The sender and the receiver can communicate through a specific interface to transfer data. To this end, both the sender and the receiver should have a data interface with the same interface specification and function. Figure 4 As shown, a high definition multimedia interface (HDMI) is provided on both the display device 200 and the external device 500. During use, the user can plug the two ends of the HDMI interface data cable into the display device 200 and the external device 500 respectively, and after starting the external device 500 and the display device 200, set the signal source of the display device 200 to the HDMI interface, thereby realizing data transmission between the display device 200 and the external device 500.

[0059] It should be noted that, in order to realize the communication connection between the display device 200 and the external device 500, other connection methods can be used between the display device 200 and the external device 500. The specific connection method can be a wired connection method, such as a digital visual interface (Digital Visual Interface, DVI), a video graphics array (Video Graphics Array, VGA), a USB interface, etc.; it can also be a wireless connection method, such as a wireless local area network, a Bluetooth connection, an infrared connection, etc. Different communication connection methods can use different information transmission protocols. For example, when an HDMI interface is used to realize the connection, the HDMI protocol can be used for data transmission.

[0060] The tuner-demodulator 210 receives broadcast television signals via wired or wireless reception, and demodulates audio and video signals, such as EPG data signals, from a plurality of wireless or wired broadcast television signals.

[0061] In some embodiments, the controller 250 and the tuner-demodulator 210 may be located in different separate devices, that is, the tuner-demodulator 210 may also be located in an external device of the main device where the controller 250 is located, such as an external set-top box.

[0062] The controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in the memory 290. The controller 250 controls the overall operation of the display device 200. For example, in response to receiving a user command for selecting a UI object to be displayed on the display 260, the controller 250 can perform operations related to the object selected by the user command.

[0063] In some embodiments, the controller 250 includes at least one of a central processing unit (CPU), a video processor, an audio processor, a graphics processing unit (GPU), a RAM (Random Access Memory, RAM), a ROM (Read-Only Memory, ROM), a first interface to an nth interface for input / output, a communication bus (Bus), etc.

[0064] The user may input a user command through a graphical user interface (GUI) displayed on the display 260, and the user input interface receives the user input command through the graphical user interface (GUI). Alternatively, the user may input a user command through a specific sound or gesture, and the user input interface recognizes the sound or gesture through a sensor to receive the user input command.

[0065] "User interface" is the medium interface for interaction and information exchange between applications or operating systems and users. It realizes the conversion between the internal form of information and the form acceptable to users. The commonly used form of user interface is the Graphical User Interface (GUI), which refers to the user interface related to computer operation displayed in a graphical way. It can be an interface element such as an icon, window, control, etc. displayed on the display screen of an electronic device, where the control can include icons, buttons, menus, tabs, text boxes, dialog boxes, status bars, navigation bars, widgets, etc.

[0066] Figure 5 Some embodiments of the present application provide Figure 1 Schematic diagram of software configuration in the display device. In some embodiments, the system of the display device 200 can be divided into three layers, namely, application layer, middleware layer and hardware layer from top to bottom.

[0067] The application layer mainly includes commonly used applications on TV and application frameworks. Common applications are mainly applications developed based on browsers, such as HTML5 APPs and native APPs.

[0068] The Application Framework is a complete program model that has all the basic functions required by standard application software, such as file access, data exchange, etc., as well as the user interfaces of these functions (toolbars, status bars, menus, dialog boxes).

[0069] Native apps can support online or offline, message push or local resource access.

[0070] The middleware layer includes various TV protocols, multimedia protocols, system components and other middleware. The middleware can use the basic services (functions) provided by the system software to connect various parts of the application system or different applications on the network, and can achieve the purpose of resource sharing and function sharing.

[0071] The hardware layer mainly includes the hardware abstraction layer (HAL) interface, hardware and drivers. The HAL interface is a unified interface for all TV chips to connect, and the specific logic is implemented by each chip. Drivers mainly include: audio driver, display driver, Bluetooth driver, camera driver, WIFI driver, USB driver, HDMI driver, sensor driver (such as fingerprint sensor, temperature sensor, pressure sensor, etc.), and power driver.

[0072] In some embodiments, the display device 200 can be connected to an external device 500, such as a network box, a computer, a game console, etc., through an HDMI input (HDMI in). At this time, the display device 200 acts as a sink, and the external device 500 acts as a source. The external device 500 can also be represented as a signal source device. Figure 6 As shown, when the transmitter is connected to the receiver, the transmitter pulls up the 5V voltage through the HDMI interface so that the 5V voltage can be added to the receiver at the same time. For example, when the HDMI interface of the transmitter is connected to the receiver, the transmitter adds the 5V voltage to the receiver through the 18th pin (PWR_CON_PIN18) of the HDMI interface. In this way, even if the receiver is not turned on, the transmitter can read the EDID (Extended Display Identification Data) of the receiver through the HDMI interface.

[0073] After the receiving end detects a stable 5V voltage signal, it prepares the HDCP key and EDID file and pulls up the HPD (Hot Plug Detection) signal. HDCP (High-bandwidth Digital Content Protection) is a content protection technology that can perform data encryption and authorization verification. Each device is preset with a key for verification.

[0074] After detecting that HPD is pulled high, the receiving end performs HDCP verification with the receiving end and reads the EDID of the receiving end through the DDC (Display Data Channel) of the HDMI interface. Among them, EDID includes device-related information of the receiving end, such as resolution, refresh rate, and color support. The sending end then transmits audio and video signals (media signals) to the receiving end through the TMDS (Transition Minimized Differential Signaling) data channel and TMDS clock channel in the HDMI interface according to the data content in the EDID, so that the receiving end plays or displays the audio and video signals of the sending end. Among them, the TMDS data channel is used to transmit the RGB data of the pixel points, and the TMDS clock channel is used to maintain the unified timing required for transmission.

[0075] Similarly, in some embodiments, the display device 200 can also be connected to other display devices, such as a TV, a monitor, etc., through HDMI output (HDMI out). In this case, the display device 200 acts as a transmitter (source) and the external display device acts as a receiver (sink). The interaction process between the transmitter and the receiver is as follows: Figure 6 As shown, no further elaboration is given here.

[0076] like Figure 6 As shown, in some embodiments, the HDMI interface also includes a CEC (Consumer Electronics Control) pin, and the CEC pin can form a CEC channel corresponding to provide HDMI-CEC communication to the transmitter and the receiver. HDMI-CEC communication supports two-way communication and control between the transmitter and the receiver through the HDMI interface, such as switching power, adjusting volume, switching input source and other functions, thereby realizing the device joint control function between the receiver and the transmitter. Among them, HDMI-CEC communication includes specific commands and message formats for realizing communication and control between the transmitter and the receiver. Different devices correspond to unique addresses for identifying the device identities of the transmitter and the receiver. For example, the display device 200 can communicate with the external device 500 through broadcast commands and unicast commands.

[0077] like Figure 7 As shown, in some embodiments, when the user performs an interactive operation based on the external device 500, the user will input a control instruction to the external device 500 based on the interactive operation action, and the external device 500 can generate a CEC message corresponding to the control instruction according to the command and message format defined by CEC. The CEC message is then transmitted to the display device 200 through the CEC pin in the HDMI cable. When the display device 200 also supports the CEC protocol, it can receive and parse the CEC message. In addition, after parsing the CEC message, the display device 200 will perform corresponding operations according to the received CEC message. For example, when the control instruction is an instruction for adjusting the volume, the display device 200 will perform the corresponding volume adjustment.

[0078] It should be noted that in the above embodiment, the user can use the control device matched with the external device 500 to input control instructions to jointly control the display device 200. In some embodiments, the user can also input control instructions through the control device 100 matched with the display device 200 to jointly control the external device 500. That is, the joint control process when the device is jointly controlled based on the device interface 240 can be bidirectional.

[0079] Based on the joint control function of the display device 200 and the external device 500, in some embodiments, the device interface 240 of the display device 200 is connected to the external device 500, and one device can wake up another device in standby state based on HDMI-CEC communication. That is, the device interface 240 of the display device 200 is connected to the external device 500. When both devices are in standby state, one of the devices will send a wake-up message to the other device in standby state based on HDMI-CEC communication when it is turned on. After receiving the wake-up message, the other device will be powered on and switched from standby state to power-on state. Among them, the power consumption of the device in standby state is less than that of the device in power-on state.

[0080] In the embodiment of the present application, the joint control process of the external device 500 turning on and waking up the display device 200 (in standby mode) is taken as an example for explanation, and both the display device 200 and the external device 500 support HDMI-CEC communication.

[0081] In some embodiments, the display device 200 includes a standby state and a power-on state, and the display device 200 also includes a power management module 270. The power management module 270 and Figure 3The power supply connection shown is used to control at least the power-off or power-on of the display 260; the power management module 270 is configured to operate with low power consumption, so whether in the power-on state or the power-off state, the power management module 270 always remains in the power-on state, thereby realizing the power-on and power-off management of the power supply. For example, the power management module 270 can be an MCU (Microcontroller Unit) chip, and in some embodiments, the MCU chip can be used as a submodule of the controller 250, that is, the power management module 270 can be integrated in the controller 250.

[0082] In some embodiments, when the display device 200 is in a standby state, the power management module 270 at least controls the display 260 to be in a power-off state; when the display device 200 is in a power-on state, the power management module 270 at least controls the display 260 to be in a power-on state. In this way, the display device 200 can keep the screen off in the standby state and keep the screen on in the power-on state.

[0083] In order to reduce the power consumption of the display device 200 in the standby state, in some embodiments, the controller 250 includes a first controller 251 and a second controller 252, and the power consumption of the first controller 251 is less than that of the second controller 252. Among them, the first controller 251 is used to process data transmission, device identification and connection management of the device interface 240; the second controller 252 is used to process tasks of various functions in the system, including running UI objects, processing input signals, performing audio and video decoding, etc. For example, the first controller 251 can be an HDMI controller, and the second controller 252 can be composed of a SOC (System Chip). The power management module 270 is also used to control the power on or off of the first controller 251 and the second controller 252. When the display device 200 is in standby state, the power management module 270 also controls the first controller 251 to be in power-on state and the second controller 252 to be in power-off state or low power consumption state; when the display device 200 is in power-on state, the power management module 270 also controls the first controller 251 to be in power-on state and the second controller 252 to be in power-on state.

[0084] Alternatively, in some embodiments, the first controller 251 is integrated into the second controller 252 as a subunit of the second controller 252. Accordingly, in order to enable the display device 200 to receive a wake-up message from the external device 500 based on the device interface 240 in the standby state, the power management module 270 controls the second controller 250 to be in a low power consumption state in the standby state of the display device 200. In the low power consumption state, the power management module 270 can control the power supply to only supply power to the first controller 251 in the second controller 252. For example, the HDMI controller is integrated in the SOC, and in the standby state, the power supply only supplies power to the HDMI controller in the SOC, so that the HDMI controller is in a powered-on state.

[0085] Similarly, in some embodiments, the first controller 251 can also be integrated into the power management module 270 as a subunit of the power management module. Since the power management module 270 is always powered on, the first controller 251 is also powered on when the display device 200 is in standby mode.

[0086] In some embodiments, the power management module 270 is also used to control the power-off or power-on of the memory 290. The memory 290 is used to store data and program codes that need to be quickly accessed. In order to avoid data loss, the power management module 270 controls the memory 290 to be in the power-on state regardless of whether the display device 200 is in the standby state or the power-on state. Among them, the memory 290 can be SRAM (Static Random-Access Memory).

[0087] In some embodiments, when the display device 200 is switched to the power-on state, the power management module 270 powers on the second controller 252 to start the second controller 252 to run the operating system of the display device 200. In the process of running the operating system, the second controller 252 will perform EDID file initialization of each device interface 240. Then, the initialized EDID file is written into the memory 290 for storage. In this way, when the display device 200 is connected to the external device 500 based on each device interface 240, the external device 500 can read the EDID file corresponding to the device interface 240, and the reliability of the EDID file can be guaranteed.

[0088] For example, the display device 200 includes three device interfaces 240, namely HDMI 1, HDMI 2 and HDMI 3. Each HDMI interface corresponds to a different port, and each port corresponds to a different physical address. When the display device 200 is turned on and runs the operating system, the EDID file of each port is initialized, and then the initialized EDID file is written into the memory 290 (such as SRAM).

[0089] It should be noted that the power-off state of one or more circuits or components in the above embodiments in the standby state may also be a low power consumption state. This application does not limit this. In some embodiments, the display device 200 also includes a shutdown state, in which all components and circuits in the display device 200 are in a power-off state.

[0090] The following embodiments are described by taking the first controller 251 integrated in the power management module 270 as an example, but are not limited thereto, and the first controller 251 may also be integrated in other circuits or chips. For ease of description, some embodiments of the present application represent the device interface 240 as an HDMI interface and the first controller 251 as an HDMI interface for exemplary description, and the corresponding HDMI interface will be integrated in the power management module 270.

[0091] like Figure 8 As shown, in some embodiments, the display device 200 is in the standby state, the power management module 270, the memory 290 and the first controller 251 of the display device 200 are in the power-on state (shown in the solid frame part), the second controller 252 is in the power-off or low-power state (shown in the dotted frame part), the device interface 240 is connected to the external device 500, and the external device 500 is also in the standby state. At this time, the user controls the external device 500 to turn on, and the external device 500 sends a wake-up message (such as a CEC message) to the display device 200 based on the connection with the device interface 240. After receiving the wake-up message, the display device 200 notifies the power management module 270 to power on based on the first controller 251 in response to the wake-up message, so that the display device 200 switches to the power-on state.

[0092] based on Figure 8 In some embodiments, the joint control process shown in Fig. 9As shown, after the external device 500 is powered on, it initiates DDC communication based on the connection relationship with the device interface 240, and sends a data exchange message (DDC message) to the display device 200 to obtain the EDID file of the display device 200. After receiving the DDC message, the first controller 251 of the display device 200 reads the corresponding EDID file (i.e., the EDID file corresponding to the device interface connected to the external device 500) in the memory 290, and sends the read EDID file to the external device 500. After receiving the EDID file sent by the display device 200, the external device 500 parses the physical address of the device interface 240 in the EDID file, and determines whether the physical address (such as the length, range or format of the field, etc.) is legal. If the physical address is not legal, no processing is performed; if the physical address is legal, the external device 500 determines that the display device 200 is currently connected, and sends a wake-up message (CEC message) to the display device 200 based on CEC communication.

[0093] After receiving the wake-up message, the display device 200 notifies the power management module 270 of the wake-up message through the first controller 251, thereby triggering the power management module 270 to power on and switch the display device 200 to the power-on state. That is, the power management module 270 sends a specific wake-up electrical signal to the second controller 252, so that the second controller 252 starts the operating system of the display device 200. After sending the wake-up message, the external device 500 sends port information (CEC message) to the display device 200 at a preset time interval (such as 2s, etc.). Among them, the port information includes the physical address corresponding to the device interface 240 of the display device 200 connected to the external device 500, which is used to notify the display device 200 which device interface 240 is in an active (up) state, that is, which device interface 240 is connected to the external device 500. Then, the display device 200 sets the signal source channel according to the port information sent by the external device 500, switches the signal source to the device interface corresponding to the external device 500, and plays the display screen provided by the external device 500.

[0094] The display device 200 and the external device 500 can be based on Figure 8-Figure 9The joint control process shown is to wake up the display device 200 in the standby state through the external device 500. However, in some scenarios, the display device 200 in the standby state may not complete the EDID file initialization of each device interface, such as the display device 200 is powered off and then powered on in the standby state, and automatically enters the standby state. At this time, the display device 200 does not start the TV, but automatically switches to the standby state after the boot stage (such as the BIOS stage of the Windows system) is completed after powering on, and the EDID file initialization will not be performed, that is, the EDID files of each device interface 240 have not been written into the memory 290. In this way, the external device 500 cannot obtain the EDID file of the display device 200, and will mistakenly determine that the external device 500 is not currently connected to the display device 200, so it will not send a wake-up message to the display device 200, resulting in the failure of the standby wake-up between the display device 200 and the external device 500.

[0095] Based on the above application scenarios, some embodiments of the present application provide a display device 200, such as Fig.10 As shown, it includes a display 260, a device interface 240, a power management module 270, a memory 290 and a controller 250. The display 260 is configured to display the display screen of the signal source channel; the device interface 240 is configured to connect to an external device 500, such as an interface such as an HDMI interface; the power management module 270 is used to at least control the power-off or power-on of the display 260, so that the display device 200 is in a standby state or a power-on state; the memory 290 is used to store extended display identification data (EDID), such as a static random access memory such as an SRAM, and the controller 250 is configured to execute the following program steps:

[0096] S1001: In the standby state, in response to a first data exchange message sent when the external device is turned on, reading first identification data in the power management module, the first identification data being extended display identification data pre-stored in the power management module.

[0097] The device interface 240 of the display device 200 is connected to an external device 500, and the display device 200 is in a standby state. The external device 500 can be in a standby state or in a shutdown state. The user can turn on the external device 500 through a specific interactive operation to turn on the external device 500 (even if the external device 500 switches from a standby state / shutdown state to a power-on state). Since the display device 200 is connected to the external device 500 based on the device interface 240, the external device 500 will send a first data exchange information (such as a DDC message) to the display device 200 based on the device interface 240 when it is turned on, so as to obtain the extended identification display data (EDID) of the display device 200. For example, when the external device 500 is turned on, it initiates DDC communication and sends a DDC message for obtaining EDID to the display device 200 based on the HDMI interface.

[0098] In some embodiments, a default EDID file is pre-stored in the power management module 270 of the display device 200. The physical address corresponding to the EDID file may be the physical address of any device interface 240 in the display device 200. For ease of description, the embodiment of the present application represents the EDID file stored in the power management module 270 as the first identification data. The first identification data is used to provide the EDID of the display device 200 to the external device 500 when the display device 200 does not perform EDID initialization. For example, the EDID of one of the device interfaces 240 in the display device 200 can be written into the power management module 270 in a hard-coded manner.

[0099] When the display device 200 is in the standby state, after receiving the first data exchange message sent by the external device 500 , the first controller 251 may send the first data exchange information to the power management module to read the first identification data stored in the power management module 270 .

[0100] like Fig.11 As shown, in some embodiments, since the display device 200 may have performed EDID initialization in the standby state, such as the display device 200 switches from the power-on state to the standby state, and is not powered off in the standby state. Therefore, before executing step S1001, the display device 200 also reads the extended display identification data (S1101) in the memory 290. It can be seen from the above embodiments that when the display device 200 has performed EDID initialization, the memory 290 will store the EDID file written by the display device 200 for performing EDID initialization; when the display device 200 has not performed EDID initialization, the memory 290 will not store the EDID file written by the display device 200 for performing EDID initialization.

[0101] Therefore, if the memory 290 stores the extended display identification data, the display device 200 sends the extended display identification data of the memory 290 to the external device 500; if the memory 290 stores the extended display identification data, the extended display identification data of the memory is sent to the external device 500 (S1102). That is, when the EDID file is stored in the memory 290, it means that the display device 200 has completed the EDID initialization, and the display device 200 can execute Figure 8-Figure 9 The standby wake-up joint control process shown reduces the programs executed by the display device 200 and can save system resource consumption; when the memory 290 does not store the EDID file, it means that the display device 200 has not completed the EDID initialization. In order to make the standby wake-up function work normally, the display device 200 sends the pre-stored EDID to the external device 500 to inform the external device 500 of the connection relationship between the two (display device 200 and external device 500), that is, execute step S1001. In this way, the external device 500 will not mistakenly determine that the display device 200 is not currently connected, and can send a wake-up message to the display device 200 normally based on CEC communication.

[0102] S1002: Send the first identification data to the external device, and receive a wake-up message sent by the external device based on the first identification data.

[0103] After the display device 200 reads the pre-stored first identification data in the power management module 270, it can send the first identification data to the external device 500 based on the device interface 240. For example, based on the DDC communication provided by the HDMI interface, the first identification data is sent to the external device 500 using the DDC line in the HDMI cable.

[0104] After the external device 500 receives the first identification data sent by the display device 200 through the DDC line, it parses and processes the first identification data. That is, in some embodiments, after the external device 500 receives the first identification data sent by the display device 200, it parses the physical address of the device interface 240 in the first identification data, and detects whether the physical address is legal. Among them, the device interface 240 can be represented by a specific field in the EDID file, and whether the physical address is legal can be determined by the length, range or format of the field corresponding to the physical address. If the parsed physical address is legal, the external device 500 can determine that the display device 200 is connected, and send a wake-up message to the display device 200 based on the CEC communication to wake up the display device 200 from the standby state to the power-on state; otherwise, the external device 500 does not perform any processing.

[0105] Since the first identification data is based on the EDID pre-stored in any device interface 240 in the display device 200, the physical address of the device interface 240 in the first identification data will conform to the predefined data format. At this time, the external device 500 can normally send a wake-up message to the display device 200, thereby ensuring the reliability of the standby wake-up function.

[0106] For example, the external device 500 receives the first identification data sent by the display device 200 via the DDC line, parses the physical address corresponding to the HDMI interface in the first identification data, and detects whether the physical address is legal. After detecting that the physical address is legal, based on the CEC communication provided by the HDMI interface, the CEC line is used to send a "Text View On" CEC message to the display device 200, and the display device 200 receives the above "Text View On" CEC message via the CEC line.

[0107] S1003: In response to the wake-up message, notify the power management module to power on, so that the display device switches to the power-on state.

[0108] After the display device 200 receives the wake-up message sent by the external device 500, in response to the wake-up message, the first controller 251 notifies the power management module 270 to power on. For example, the HDMI controller (first controller 251) of the display device 200 receives the wake-up message (CEC message) sent by the external device 500, and forwards the wake-up message to the MCU (power management module 270). After receiving the wake-up message, the MCU triggers the startup program, sends a specific electrical signal to the display 260 and the SOC (second controller 252), lights up the display 260 and enables the SOC to run the CPU, so that the display device 200 enters the startup state.

[0109] In some embodiments, when the display device 200 switches to the power-on state, the operating system of the display device 200 is loaded based on the second controller 252, and the system files stored in the memory 290 are read, and various applications and services are prepared. After the operating system is loaded, the device interface 240, such as the HDMI interface, the USB interface, etc., is initialized based on the second controller 252. Among them, initializing the device interface 240 includes setting parameters, checking the connection status, etc. For the device interface 240 used for display such as HDMI, the display device 200 also initializes the EDID corresponding to the device interface 240 during initialization, and then writes the initialized EDID into the memory 290. Among them, the EDID includes the physical address of the device interface 240. For example, when the display device 200 is turned on, the SOC is powered on and loaded with the operating system, the EDID is initialized for the HDMI interface, and the initialized EDID file is written into the SRAM. At this time, the EDID file written by the display device 200 is the EDID corresponding to the device interface 240 connected to the external device 500, and the physical address in the EDID matches the physical address of the device interface 240.

[0110] S1004: Reset the hot plug detection signal of the device interface, so that the external device sends a second data exchange message in response to the hot plug signal.

[0111] After the display device 200 is switched to the power-on state, the EDID of the device interface 240 is initialized, and the initialized ED ID is written into the memory 290. It can be known from step S1001 that the first identification data sent by the display device 200 to the external device 500 based on the first data exchange message is pre-stored in the power management module 270, and the physical address of the device interface 240 in the first identification data can be any device interface 240, which may not match the device interface 240 currently connected to the external device 500. For example, the display device 200 has three HDMI interfaces, namely HDMI 1, HDMI 2 and HDMI 3. The physical address in the EDID stored in the power management module 270 is the physical address of HDMI 1, and the device interface 240 connected to the external device 500 is HDMI 3. At this time, the port information sent by the external device 500 to the display device 200 is the port information of HDMI 1, and the display device 200 will switch the signal source to the channel of HDMI 1, and the display image provided by the external device 500 cannot be displayed normally.

[0112] Therefore, after the display device 200 switches to the power-on state, it also resets the hot plug detection signal of the device interface 240, that is, re-pulling the HPD of the device interface 240, so that the external device 500 re-acquires the EDID of the display device 200. In some embodiments, when the display device 200 resets the hot plug detection of the device interface 240, it pulls the hot plug detection signal down to a low level state, and then pulls the hot plug detection signal up to a high level state. For example, the display device 200 can pull the state of the HPD pin in the HDMI interface from a high level (High) to a low level (Low); after pulling the HPD pin down, it pulls its state back from a low level to a high level.

[0113] In some embodiments, after the external device 500 detects that the HPD signal is pulled low and then pulled high, the external device 500 is notified to initiate DDC communication in response to the change of the HPD signal. After receiving the notification, the external device 500 sends a second data exchange message (DDC) message to the display device 200 based on the DDC communication to reacquire the EDID of the display device 200. For example, the external device 500 can send a DDC message to the display device 200 using the DDC line based on the DDC communication provided by HDMI, so that the display device 200 receives the DDC message through the DDC line.

[0114] S1005: receiving the second data exchange message, and in response to the second data exchange message, reading second identification data in a memory, where the second identification data is extended display identification data written by the controller when the display device switches to the power-on state.

[0115] The display device 200 receives the second data exchange message (DDC message) sent by the external device 500 based on the device interface 240, and in response to the second data exchange message, reads the EDID written by the second controller 252 in the memory 290 when the display device 200 switches to the power-on state. For the convenience of distinction, in the embodiment of the present application, the EDID stored in the memory 290 is represented as the second identification data. Since the second identification data is the EDID written by the device interface EDID when the display device 200 is powered on and initialized, at this time, the physical address in the second identification data matches the physical address of the device interface 240 connected to the external device 500, that is, the physical address in the EDID is the same as the physical address of the device interface 240 connected to the external device 500.

[0116] S1006: Send the second identification data to the external device, so that the external device sends the port information of the device interface based on the second identification data.

[0117] After the display device 200 reads the second identification data in the memory 290, it sends the second identification data to the external device 500 based on the device interface 240. For example, the display device 200 can send the second identification data to the external device 500 through the DDC line in the HDMI interface. After receiving the EDID newly sent by the display device 200, the external device 500 parses the new ED ID, so as to obtain the correct physical address of the device interface 240.

[0118] like Fig.12 As shown, in order to ensure the accuracy of the data, in some embodiments, after the display device 200 sends the second identification data to the external device 500, it also sends an active port request (S1201) to the external device 500. The active port request is used to request the port information of the device interface 240 connected to the external device 500, and the port information includes the physical address of the device interface 240. For example, based on the CEC communication provided by the HDMI interface, the display device 200 can send a "Request Active Source" message to all external devices 500 connected thereto through the CEC line, so that the external device 500 can respond to the message and send port information to the display device 200.

[0119] The display device 200 then receives the port information sent by the external device 500 (S1202), and parses the physical address in the port information (S1203). At this time, the port information sent by the external device 500 is generated based on the extended display identification data newly sent by the display device 200, that is, the second identification data, so the port information matches the port information of the device interface 240 connected to the external device 500. After the display device 200 receives the port information sent by the external device 500, it sets the signal source channel based on the physical address in the port information (S1204). For example, when the physical address is the address of HDMI 1, the signal source channel is set according to the address of HDMI 1.

[0120] In some embodiments, the device interface 240 of the display device 200 includes a DDC pin, and the device interface 240 is configured to form a display data channel (DDC channel). The display device 200 receives the first data exchange information through the display data channel, and in response to the first data exchange message, reads the first identification data at the first preset address of the power management module 270 based on the display data channel. Then, the first identification data is sent to the external device 500 through the display data channel.

[0121] And, receiving the second data exchange message through the display data channel, and in response to the second data exchange message, reading the second identification data at the second preset address of the memory 290 based on the display data channel. Then sending the second identification data to the external device 500 through the display data channel. That is, the display device 200 can perform the "sending the first identification data to the external device 500" in the above steps S1001 and S1002, and steps S1005-S1006 based on the DDC channel.

[0122] In some embodiments, the controller 250 includes a first controller 251 and a second controller 252. The first controller 251 is connected to the device interface, and the power management module 270 is further configured to control the power on or off of the first controller 251 and the second controller 252. In the standby state, the first controller 251 is in the power on state, and the second controller 252 is in the power off state; in the power on state, the first controller 251 is in the power on state, and the second controller 252 is in the power on state.

[0123] Accordingly, in some embodiments, the first controller 251 of the display device 200 is configured to send a power-on notification to the power management module 270, so that the power management module 270 sends a wake-up electrical signal to the first controller 251 and the display 260 in response to the power-on notification. The second controller 252 of the display device 200 is configured to control the display device 200 to switch to the running state in response to the wake-up electrical signal, and initialize the extended display identification data corresponding to the device interface 240 to generate the second identification data. The second identification data is then written into the memory 290 by the second controller 252, and the hot plug detection signal of the device interface 240 is reset.

[0124] It should be noted that all or part of the programs executed by the first controller 251 in the above embodiment can also be executed by the second controller 252; similarly, all or part of the programs executed by the second controller 252 can also be executed by the first controller, which will not be repeated here.

[0125] S1007: Setting a signal source channel according to the port information, and controlling the display to display a display screen of the signal source channel.

[0126] After receiving the port information sent by the external device 500 based on the second identification data, the display device 200 sets the signal source channel according to the port information. After setting the signal source channel, the display device 200 displays the display screen provided by the external device 500 according to the set signal source channel. In some embodiments, step S1007 can be performed by the second controller 252.

[0127] That is, in some embodiments, the second controller 252 sets the signal source channel according to the port information. The signal source channel is a data channel formed based on the device interface 240 after the external device 500 is connected to the device interface 240. Then the media signal (HDMI signal) sent by the external device 500 through the signal source channel is received. The media signal is decoded, and the display 260 is controlled to display the display screen of the media signal. For example, when the port information is the physical address of HDMI 3, the display device 200 can set the signal source according to the physical address of HDMI 3. In this way, the display device 200 can ensure the correct switching of the signal source channel while improving the reliability of the standby wake-up function.

[0128] In some embodiments, the device interface 240 of the display device 200 includes a CEC pin, and the device interface is configured to form a CEC channel. The display device 200 receives a wake-up message through the CEC channel, and in response to the wake-up message, notifies the power management module 270 to power on based on the CEC channel, so that the display device 200 switches to the power-on state. That is, the display device 200 can perform the "receiving a wake-up message sent by the external device 500 based on the first identification data" in the above step S1002 based on the DDC channel. In some embodiments, the display device 200 can also perform the above steps S1201-S1202 based on the CEC channel.

[0129] It should be noted that, in some implementations, the above steps S1001-S1007 can be performed by Figure 4 The middleware shown is configured with a specific software program to implement this. The logic followed by the software program is the same as the above steps, and will not be described in detail here.

[0130] Based on the above embodiment, steps S1001-S1007 are described below by using a specific example, wherein the device interface 240 in the example is an HDMI interface, the first controller 251 is an HDMI controller, and the second controller 252 is a SOC, but this is not intended to limit the scope of the invention.

[0131] like Fig.13 In the interactive process shown in the figure, the HDMI 3 of the display device 200 is connected to the external device 500, the EDID of HDMI 1 is stored in the power management module 270 of the display device 200, the display device 200 does not perform the initialization of the EDID of the device interface 240, and the external device 500 and the display device 200 are both in the standby state. Among them, the message interaction between the display device 200 and the external device 500 is realized based on the device interface 240. Fig.13 No more repetition of emphasis.

[0132] After the external device 500 is powered on, it sends a DDC message to the display device 200 based on the DDC communication. The display device 200 responds to the DDC message by reading EDID 1 in the power management module 270, and sends EDID 1 stored in the power management module 270 to the external device 500 based on the DDC communication. The external device 500 parses EDID 1, and when the physical address in EDID 1 is legal, it sends a CEC message to the display device 200 based on the CEC communication. The display device 200 responds to the CEC message and powers on and performs EDID initialization, and then writes the initialized EDID 2 into the memory 290.

[0133] The display device 200 re-pull the HPD of HDMI, so that the external device 500 initiates DDC communication again, and sends a DDC message to the display device 200 based on the DDC communication. The display device 200 responds to the DDC message by reading EDID 2 in the memory 290, and sends EDID 2 stored in the memory 290 to the external device 500 based on the DDC communication. Among them, EDID 2 is the port information including port 3. Then, the display device 200 sends an active port request to the external device based on CEC communication. In response to the active port request, the external device 500 sends active port information, that is, the port information of HDMI 3, to the display device 200 through the newly obtained EDID 2. The display device 200 then switches the signal source according to the port information of HDMI 3 to play the display screen provided by the external device 500 connected to HDMI 3.

[0134] Based on the above-mentioned display device 200, some embodiments of the present application also provide a standby wake-up method, which is applied to the display device 200 of the above-mentioned embodiment, and the display device 200 includes a display 260, a device interface 240, a power management module 270, a memory 290 and a controller 250. Among them, the display 260 is configured to display the display screen of the signal source channel; the device interface 240 is configured to connect to an external device 500; the power management module 270 is used to at least control the power off or power on of the display 260, so that the display device 200 is in a standby state or a power-on state; the memory 290 is used to store extended display identification data (EDID). Fig.10 As shown, the method comprises the following steps:

[0135] S1001: In a standby state, in response to a first data exchange message sent when an external device is turned on, reading first identification data in a power management module, where the first identification data is extended display identification data pre-stored in the power management module;

[0136] S1002: Sending the first identification data to the external device, and receiving a wake-up message sent by the external device based on the first identification data;

[0137] S1003: In response to the wake-up message, instruct the power management module to power on, so that the display device switches to the power-on state;

[0138] S1004: resetting the hot plug detection signal of the device interface, so that the external device sends a second data exchange message in response to the hot plug signal;

[0139] S1005: receiving the second data exchange message, and in response to the second data exchange message, reading second identification data in a memory, where the second identification data is extended display identification data written by the controller when the display device switches to the power-on state;

[0140] S1006: Sending the second identification data to the external device, so that the external device sends the port information of the device interface based on the second identification data;

[0141] S1007: Setting a signal source channel according to the port information, and controlling the display to display a display screen of the signal source channel.

[0142] It can be seen from the above technical solutions that the display device and standby wake-up method provided by some embodiments of the present application can be in the standby state of the display device, in response to the data exchange message sent when the external device is turned on, send the extended display identification data preset in the power management module 270 to the external device 500, and receive the wake-up message sent by the external device based on the extended display identification data. Then respond to the wake-up message, notify the power management module 270 to power on and notify the external device 500 to resend the data exchange message. Then respond to the data exchange information, send the extended display identification data newly written into the memory 290 to the external device, so that the external device sends port information based on the new extended identification data. Then set the signal source channel according to the port information, and display the display screen of the signal source channel. The method can not only improve the reliability of the standby wake-up function in the display device, but also automatically switch the signal source channel of the display device 200, which can improve the user experience.

[0143] The same and similar parts between the various embodiments in this specification can be referenced to each other and will not be described again here.

[0144] Those skilled in the art can clearly understand that the technology in the embodiments of the present invention can be implemented by means of software plus a necessary general hardware platform. Based on this understanding, the technical solution in the embodiments of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which can be stored in a storage medium such as ROM / RAM, a disk, an optical disk, etc., and includes a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of various embodiments of the present invention or certain parts of the embodiments.

[0145] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0146] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A display device, characterized in that: include: A display configured to display a display screen of a signal source channel; A device interface configured to connect an external device; A power management module, used to at least control the power-off or power-on of the display, so that the display device is in a standby state or a power-on state; A memory, used for storing extended display identification data; The controller is configured as: In the standby state, in response to a first data exchange message sent when the external device is turned on, reading first identification data in the power management module, the first identification data being extended display identification data pre-stored in the power management module; Sending the first identification data to the external device, and receiving a wake-up message sent by the external device based on the first identification data; In response to the wake-up message, instruct the power management module to power on, so that the display device switches to the power-on state; resetting a hot plug detection signal of the device interface so that the external device sends a second data exchange message in response to the hot plug signal; receiving the second data exchange message, and in response to the second data exchange message, reading second identification data in a memory, wherein the second identification data is extended display identification data written by the controller when the display device is switched to the power-on state; sending the second identification data to the external device, so that the external device sends the port information of the device interface based on the second identification data; A signal source channel is set according to the port information, and the display is controlled to display a display screen of the signal source channel.

2. The display device according to claim 1, characterized in that After the controller executes sending the second identification data to the external device, the controller is further configured to: Sending an active port request to the external device, the active port request being used to request port information of the device interface connected to the external device, the port information including a physical address of the device interface; receiving port information sent by the external device in response to the active port request message; Parsing the physical address in the port information; The signal source channel is set based on the physical address.

3. The display device according to claim 1, characterized in that The controller comprises a first controller and a second controller, the first controller is connected to a device interface, and the power management module is further configured to control power on or power off of the first controller and the second controller; in the standby state, the first controller is in a power-on state, and the second controller is in a power-off state; In the power-on state, the first controller is in a powered-on state, and the second controller is in a powered-on state.

4. The display device according to claim 3, characterized in that The first controller is configured to: Sending a power-on notification to the power management module, so that the power management module sends a wake-up electrical signal to the first controller and the display in response to the power-on notification; The second controller is configured to: In response to the wake-up electrical signal, control the display device to switch to a running state, and initialize the extended display identification data corresponding to the device interface to generate the second identification data; writing the second identification data into the memory; Resetting the hot plug detect signal of the device interface.

5. The display device according to claim 4, characterized in that The second controller executes a hot plug detection signal to reset the device interface and is configured to: Pulling the hot plug detection signal down to a low level state; The hot plug detection signal is pulled up to a high level state.

6. The display device according to claim 4, characterized in that The second controller is further configured to: Setting a signal source channel according to the port information, wherein the signal source channel is a data channel formed based on the device interface after the external device is connected to the device interface; Receiving a media resource signal sent by the external device through the signal source channel; The media asset signal is decoded, and the display is controlled to display a display screen of the media asset signal.

7. The display device according to claim 1, characterized in that Before the controller reads the first identification data in the power management module, the controller is further configured to: Reading extended display identification data in the memory; If the memory stores the extended display identification data, sending the extended display identification data of the memory to the external device; If the memory does not store the extended display identification data, the step of sending the first identification data to the external device is performed.

8. The display device according to claim 1, characterized in that The device interface is configured to form a display data channel; and the controller is configured to: receiving the first data exchange message through the display data channel; In response to the first data exchange message, reading the first identification data at a first preset address of the power management module based on the display data channel; sending the first identification data to the external device through the display data channel; and, receiving the second data exchange message through the display data channel; In response to the second data exchange message, reading the second identification data at a second preset address in the memory based on the display data channel; The second identification data is sent to the external device through the display data channel.

9. The display device according to claim 1, characterized in that: The device interface is configured to form a CEC channel; and the controller is configured to: Receiving the wake-up message through the CEC channel; In response to the wake-up message, the power management module is notified to power on based on the CEC channel, so that the display device switches to the power-on state.

10. A standby wake-up method, characterized in that: include: In the standby state, in response to a first data exchange message sent when the external device is turned on, first identification data is read in the power management module, where the first identification data is the extended display identification data pre-stored in the power management module; Sending the first identification data to the external device, and receiving a wake-up message sent by the external device based on the first identification data; In response to the wake-up message, instruct the power management module to power on, so that the display device switches to the power-on state; resetting a hot plug detection signal of the device interface so that the external device sends a second data exchange message in response to the hot plug signal; receiving the second data exchange message, and in response to the second data exchange message, reading second identification data in a memory, wherein the second identification data is extended display identification data written by the controller when the display device is switched to the power-on state; sending the second identification data to the external device, so that the external device sends the port information of the device interface based on the second identification data; A signal source channel is set according to the port information, and the display is controlled to display a display screen of the signal source channel.

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