WO2023124699A1 - 控制方法、装置、投屏设备及存储介质 - Google Patents

控制方法、装置、投屏设备及存储介质 Download PDF

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Publication number
WO2023124699A1
WO2023124699A1 PCT/CN2022/134891 CN2022134891W WO2023124699A1 WO 2023124699 A1 WO2023124699 A1 WO 2023124699A1 CN 2022134891 W CN2022134891 W CN 2022134891W WO 2023124699 A1 WO2023124699 A1 WO 2023124699A1
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Prior art keywords
signal
module
image frame
screen projection
interface
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PCT/CN2022/134891
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English (en)
French (fr)
Inventor
何世友
房俊恺
胡志勇
周飞
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深圳市倍思科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority claimed from CN202111609646.6A external-priority patent/CN114296514A/zh
Priority claimed from CN202123309574.1U external-priority patent/CN217386235U/zh
Priority claimed from CN202123309590.0U external-priority patent/CN216903614U/zh
Priority claimed from CN202210467354.1A external-priority patent/CN114996186B/zh
Priority claimed from CN202210725015.9A external-priority patent/CN115145850A/zh
Priority claimed from CN202210996816.9A external-priority patent/CN117641017A/zh
Application filed by 深圳市倍思科技有限公司 filed Critical 深圳市倍思科技有限公司
Publication of WO2023124699A1 publication Critical patent/WO2023124699A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/40—Bus structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R27/00—Coupling parts adapted for co-operation with two or more dissimilar counterparts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00—Coupling parts supported only by co-operation with counterpart
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00—Coupling parts supported only by co-operation with counterpart
    • H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities

Definitions

  • This application is based on the application number 202210467354.1, the application date is April 29, 2022, the application number is 202210725015.9, the application date is June 24, 2022, the application number is 202123309590.0, the application date is December 27, 2021, and the application number is 202111609646.6, the application date is December 27, 2021, the application number is 202123309574.1, the application date is December 27, 2021, the application number is 202210996816.9, and the application date is August 19, 2022.
  • the priority of the above Chinese patent application the entire content of the above Chinese patent application is hereby incorporated by reference into this application.
  • the present application belongs to the technical field of electronic equipment, and in particular relates to a control method, device, screen projection equipment and storage medium.
  • the video port of the screen projection device is connected to the display and other devices.
  • the process of screen projection in order to protect privacy, it is customary to unplug the transmission line and reconnect it when needed, which is inconvenient to use.
  • embodiments of the present application provide a control method, device, screen projection device, and storage medium, so as to at least solve the problem of inconvenient use of the screen projection device in the related art.
  • An embodiment of the present application provides a control method applied to a screen projection device, including:
  • the embodiment of the present application also provides a control device, the device includes:
  • the detection module is configured to detect the image frame input by the first signal source of the screen projection device, and obtain a detection result
  • the control module is configured to stop outputting the image frame of the first signal source when the detection result meets the set condition.
  • the embodiment of the present application also provides a screen projection device, the screen projection device includes: a memory, a processor, the memory stores a computer program that can run on the processor, and when the processor executes the computer program Realize the steps of any one of the above control methods.
  • the embodiment of the present application also provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and the computer-executable instructions are configured to execute the steps of any one of the above control methods.
  • the image frame input by the first signal source of the screen projection device is detected to obtain the detection result; when the detection result meets the set condition, the output of the image frame of the first signal source is stopped.
  • the screen projection device outputs the image frame of the signal source to realize the screen projection, when the current projection information does not need to be displayed, the projection information is automatically changed, which not only protects privacy, but also does not require Repeatedly plugging and unplugging the transmission line brings great convenience to the use.
  • FIG. 1 is a schematic flow chart of a control method provided in an embodiment of the present application
  • FIG. 2 is a schematic diagram of an overall module architecture of a docking station provided by an application embodiment of the present application
  • FIG. 3 is a schematic structural diagram of a docking station provided in an application embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a docking station provided in an application embodiment of the present application.
  • FIG. 5 is a schematic diagram of a circuit structure of a conversion module provided in an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a circuit structure of a transformer module provided in an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a circuit structure of a transformer module provided in an embodiment of the present application.
  • Fig. 8 is an exploded view of a docking station provided by the embodiment of the present application.
  • FIG. 9 is a schematic perspective view of a docking station provided in an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a control device provided in an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a screen projection device provided by an embodiment of the present application.
  • Screen projection devices in this application include but are not limited to docking stations, HDMI projection cables, wireless screen projectors and other electronic devices capable of projecting image frames to display devices.
  • Docking Station also known as Port Replicator, is an external device specially designed for notebook computers. By duplicating or even extending the ports of the notebook computer, the docking station can conveniently connect the notebook computer with multiple accessories or external devices (such as power adapters, network cables, mice, external keyboards, printers, and external monitors) in one stop. The interfaces extended by the docking station can work simultaneously.
  • accessories or external devices such as power adapters, network cables, mice, external keyboards, printers, and external monitors
  • the docking station can realize the screen projection function of transmitting the image frame (or video) of the signal source to the display device connected to the docking station.
  • the video ports in the docking station such as display interface (DP, DisplayPort), high-definition multimedia interface (HDMI, High Definition Multimedia Interface), video graphics array interface (VGA, Video Graphics Array), universal serial bus type C
  • the interface USB Type-C, Universal Serial Bus Type-C
  • the user can only use the extension Unplug the transmission cable between the docking station and the signal source device or between the docking station and the display device, and then reconnect it when necessary.
  • the present application provides a control method, which is applied to the screen projection device, detects the image frame input by the first signal source of the screen projection device, and obtains the detection result; when the detection result meets the set conditions, stop outputting the first An image frame of a source.
  • the screen projection device when the screen projection device outputs the image frame of the signal source to realize the screen projection, when the current projection information does not need to be displayed, the projection information is automatically changed, which not only protects privacy, but also does not require Repeatedly plugging and unplugging the transmission line brings great convenience to the use.
  • An embodiment of the present application provides a control method, which is applied to a screen projection device, as shown in FIG. 1 , the method includes:
  • Step 101 Detect an image frame input by a first signal source of the screen projection device, and obtain a detection result.
  • the first signal source may be provided by an uplink device connected to the docking station, and the uplink device includes but is not limited to a notebook computer, a tablet computer and other electronic devices capable of outputting images or videos.
  • One port of the docking station is connected to the upstream device. This port is generally a USB Type-C female socket interface or a male socket interface with a cable TV cable (cable).
  • the upstream device provides the signal source to be displayed on the screen (that is, the first signal source), the image frame output by the upstream device is input to the docking station through this port.
  • the video port of the docking station is connected to the downstream device.
  • the video port can be a DP interface, HDMI interface, VGA interface, USB Type-C interface, etc.
  • the downstream device can display the image frame output from the video port of the docking station.
  • the downstream device can be a monitor Wait for the display device.
  • detecting the image frame input by the uplink device to the docking station specifically includes but is not limited to detecting image content, brightness information, image size, etc. of the image frame.
  • Step 102 Stop outputting the image frame of the first signal source when the detection result meets the set condition.
  • the setting condition is used to determine whether the image frame input by the first signal source is an image frame that does not need to be projected.
  • the setting conditions include but are not limited to: there is illegal image content in the image frame, there is a pop-up window in the image frame, the input image frame is not the image frame that the user expects to screen, and so on.
  • it may be determined whether the image frames input by the first signal source meet the set conditions by setting a black and white list and comparing the image content and/or image features in the image frames.
  • the screen projection information is automatically changed, which not only protects privacy, but also does not need to repeatedly plug and unplug the transmission line, which brings great convenience to use.
  • the screen projection can also be stopped by interrupting the signal.
  • an interrupt signal may be sent through a button or a touch command or a voice command, so as to stop outputting the image frame of the first signal source.
  • an interrupt signal when an interrupt signal is received, it can be decided according to the detection result of the image frame input by the first signal source whether to immediately stop outputting the image frame of the first signal source, to ignore the interrupt signal, or to delay the output of the first signal source.
  • An image frame of a source it can be decided according to the detection result of the image frame input by the first signal source whether to immediately stop outputting the image frame of the first signal source, to ignore the interrupt signal, or to delay the output of the first signal source.
  • the interrupt signal when the video file output by the first signal source is a full-screen video file, when an interrupt signal is received, the interrupt signal can be ignored, or the output of the first signal source can be stopped after the video file stops playing or exits full-screen playback. image frame to avoid stopping the screen projection due to false triggering of the interrupt signal.
  • stopping the output of the image frame of the first signal source includes:
  • the image frames allowed to be output by the screen projection device are set in the white list.
  • the image frame input by the first signal source is compared with the image frame in the set white list, and when the image frame input by the first signal source is not in the set white list, the docking station The video port stops outputting image frames to the downstream device.
  • the set white list stores the image frames that are allowed to be projected.
  • a white list can be specially set for the content currently to be screened.
  • the first data represents at least one image frame that needs to be output by the screen projection device;
  • the white list is generated based on the acquired first data.
  • a whitelist may be generated based on the image frames in the first signal source that need to be displayed on the screen, and stored in the docking station.
  • the slides or images can be stored in the docking station in the form of image frames as a set white list.
  • the docking station stops outputting image frames of the first signal source.
  • only the thumbnails of the image frames in the uplink device that need to be displayed on the screen may be stored, so as to save the storage space of the docking station.
  • stopping the output of the image frame of the first signal source includes:
  • the docking station stops outputting The image frame of the first signal source.
  • the categories of image features in the blacklist can be set according to user needs, including but not limited to features representing pop-up windows in image frames and/or features representing illegal content in image frames.
  • the stop outputting the image frame of the first signal source includes one of the following:
  • the brightness of the image frame input by the first signal source is adjusted to the minimum.
  • the second signal source is an input device other than the upstream device (that is, the first signal source that needs to be displayed on the screen), and may be in the form of a storage device (such as a U disk), a mobile phone, a hard disk, etc., and the second The signal source can store picture or video information that has nothing to do with the image frame input by the upstream device to the docking station.
  • the image frames pre-stored in the docking station can be stored in EEPROM (Electrically Erasable Programmable Read Only Memory), flash memory and other memories, and the docking station can be pre-stored and input to the uplink device for expansion.
  • EEPROM Electrically Erasable Programmable Read Only Memory
  • flash memory Flash memory
  • other memories other memories
  • the docking station can be pre-stored and input to the uplink device for expansion.
  • the image frame of the dock has nothing to do with picture or video information.
  • the display brightness of the uplink device or downlink device can be adjusted to the minimum through the internal circuit of the docking station, so that the downlink device displays a black screen, thereby preventing the image frame of the first signal source from being displayed in the downlink device, achieving The purpose of stopping the output of the image frame of the first signal source.
  • the video port of the docking station stops outputting to the downstream device the image frame input by the upstream device to the docking station.
  • it can be realized by two methods. One method is to make the downstream device display and the upstream device input to the expansion station. Another method is to make the downstream device display a black screen.
  • a data selector (MUX, multiplexer) can be used to make the downstream device display picture or video information that has nothing to do with the image frame input by the upstream device to the docking station.
  • the method when the output of the image frame of the first signal source is stopped, the method further includes at least one of the following:
  • the prompt signal includes at least one of music, light, and prompt sound.
  • the docking station when the video port of the docking station stops outputting to the downstream device the image frame input by the upstream device to the docking station, the docking station can mute the sound of the downstream device, or the docking station can send a prompt signal, To prompt the user that the image frame currently projected by the docking station is not the image frame of the first signal source.
  • the method further includes:
  • the interruption signal can be sent through a button or a touch command or a voice command, so as to resume outputting the image frame of the first signal source by way of command.
  • the image frames input by the first signal source may be continuously detected in real time, and whether to resume the output of the image frames of the first signal source is determined according to the detection result. For example, after the video port of the docking station stops outputting image frames to downstream devices, when the image frames input by the first signal source are in the set white list, or when the characteristics of the image frames input by the first signal source When all the features in the specified blacklist do not match, the docking station resumes outputting the image frame of the first signal source.
  • the output of the image frame of the first signal source after stopping the output of the image frame of the first signal source, it can also be detected in real time whether the first signal source is switched, and when it is detected that the first signal source is switched, the output of the image of the first signal source is automatically resumed frame.
  • device A is used as the first signal source.
  • the device is switched to B as the first signal source.
  • the output of the image frame of the first signal source is automatically resumed. .
  • the image frame input by the first signal source of the screen projection device is detected to obtain the detection result; when the detection result meets the set condition, the output of the image frame of the first signal source is stopped.
  • the video port of the projection device is connected to a display and other devices.
  • the application embodiment of the present application also provides an overall module architecture of the docking station applicable to the above control method applied to the screen projection device, as shown in FIG. 2 , including :
  • the power supply input port is a port for supplying power to upstream and downstream devices;
  • P0C is the port connecting the docking station and the upstream device, usually a USB Type-C female seat or a male seat with a cable;
  • the power management control module is configured to control the power supply, and is mainly configured to charge the uplink device;
  • Voltage conversion module configured to convert the input 3.3V-48V voltage into a fixed 5V voltage, and supply 5V power to other ports;
  • Power Delivery Management (PD, Power Delivery) communication module which is configured to complete the communication between the device (usually a laptop or a tablet, etc.) and the power supply, to ensure that the adapter supplies power at the maximum power, such as 100W PD or 240W PD;
  • Integrated control module configured to complete the conversion of USB Type-C interface to HDMI, VGA, USB (USB Type-A/USB Type-C), RJ45, SD/TF, audio and other interfaces, and can work at the same time;
  • P1 another input device, which may be in the form of a storage device (such as a U disk), mobile phone, hard disk, EEPROM, flash IC, etc., and the information is stored in it after being switched;
  • a storage device such as a U disk
  • the data selector is configured to determine whether the downlink data comes from P0 or P1, and the default P0 is the long-pass state;
  • the video port is mainly configured to connect the video source to the display and other devices, and also supports carrying audio, USB and other forms of data, including DisplayPort and USB Type-C, HDMI, VGA and other physical shapes; among them, the DP interface is DP2.0 Interface, the full name of DP2.0 is DisplayPort2.0, which was released by the management party VESA Video Electronics Standards Association in 2019. It is a digital audio-visual data exchange protocol;
  • RJ45 interface a kind of connector for information socket (that is, communication terminal) in the wiring system, is a common name for the standard 8-bit modular interface;
  • SD/TF interface two different forms of memory card
  • Audio output interface configured as audio output
  • USB interface configured for data transmission and charging
  • the projection information is automatically changed, and when the current projection information needs to be displayed, the projection information is automatically restored, which not only protects privacy, but also does not need to repeatedly plug and unplug the transmission line. It brings great convenience.
  • the overall module architecture of the docking station also includes:
  • the human-computer interaction piece is configured to interact with the user, and can be in the form of a switch, which is exposed on the shell of the docking station;
  • a detection part configured to detect the connection status of the video source and devices such as the display;
  • the control part is configured to complete the functions of DP2.0 signal detection, disconnection, connection recovery control, etc. It includes a detection circuit and a control circuit, and is configured to realize the detection, disconnection and recovery of the connection between the video source and the display and other equipment Connection control, etc., for example, for the HDMI port, when the control component detects that the button is triggered, it can detect, disconnect, and restore the signal of HDMI_HPD_IN to achieve the function of disconnecting and restoring the display; Turn on the display and restore the display function switch.
  • the screen projection device includes a video module, an extension module, a signal switching module, and at least one input port; wherein, the video module includes at least one video port, and the extension module includes at least one data interface, input The port is used for electrical connection with the upstream device.
  • FIG. 3 shows a schematic structural diagram of a docking station provided by an application embodiment of the present application.
  • the video port can be an HDMI interface, and HDMI can transmit audio and video signals at the same time. Since the audio and video signals use the same wire, the installation difficulty of the system line is greatly simplified.
  • the data interface can be USB3.0 interface, USB2.0 interface, SD interface, TF interface and USB Type-C interface, etc. Improve the applicability of the docking station by setting multiple data interfaces.
  • the input port includes a USB Type-C interface. With the popularity of the USB Type-C interface on notebooks and mobile phones, the USB Type-C interface is becoming more and more popular among consumers. Therefore, the uplink port of the expansion dock is also designed as a USB Type-C interface to meet the development needs of the market.
  • the video output of the docking station can only support 8K 30-frame video resolution output, and cannot switch to a higher-definition and smoother video output, which cannot meet users' better viewing needs.
  • the screen projection device outputs the image frame of the first signal source, including:
  • the signal switching module After the signal switching module receives the switching instruction, it disconnects the first signal channel between the signal switching module and the expansion module, and connects the second signal channel between the signal switching module and the video module so that the video signal can be transmitted to the video module sequentially through the input port, the third signal channel between the signal switching module and the input port, the signal switching module, and the second signal channel.
  • the signal channel resources connected to the expansion module are supplied to the video module, so that the video module adds a new signal channel on the basis of the original signal channel, increasing the The transmission volume of the video output is increased, so as to achieve a higher definition and smoother video output, and meet the better viewing needs of users.
  • a fourth signal channel is provided between the input port and the video module, so that the video signal can be output through the input port, the fourth signal channel, and the video module in sequence.
  • the fourth signal channel is an original signal channel between the input port and the video module. It can be understood that before switching, the input port can be connected to the video module through the fourth signal channel, and can be connected to the expansion module through the third signal channel, the signal switching module and the first signal channel in sequence. While data transmission is in progress, the video port can also be used for video output.
  • the video format of the upstream device can smoothly use the second signal channel for video output, it is possible to send a format conversion command to the upstream device through the input port while sending a switching command to the signal switching module, so that the upstream device The video format is converted to a corresponding format type transmittable over the second signal channel.
  • the first signal path includes RXP-RXN-TXP-TXN
  • the second signal path includes RX2P-RX2N-RX3P-RX3N
  • the fourth signal path includes RXOP-RXON-RX1P-RX1N.
  • RXP-RXN differential input terminals
  • TXP- TXN differential output terminals
  • the method also includes:
  • the data interface represents a data interface connected to the first signal channel
  • the signal switching module when a data interface is idle, the signal switching module is switched to connect with the video module, so as to avoid idle signal channel resources and waste of resources.
  • the data interface is connected to an external device, and the data interface will inevitably generate current, so by detecting whether there is current generation on the data interface, when no current is detected on the data interface, it is determined that the data interface is idle. State, the principle is simple and practical.
  • the expansion module further includes at least one network interface
  • the method further includes:
  • the network interface represents a network interface connected to the first signal channel
  • the network interface may be an RJ45 interface.
  • the general expansion module will also be provided with a network interface, the upstream device end can be connected to the network through the network interface.
  • the signal switching module is switched to be connected with the video module, so as to avoid signal channel resources being idle and causing waste of resources.
  • the existing network interface is generally equipped with a device for detecting whether it is connected to the network smoothly, when the device detects that the network interface is not connected to the network cable, it is determined that the network interface is in an idle state.
  • the principle is simple and practical.
  • the method also includes:
  • the screen projection device When the screen projection device receives the set second button command, it sends a reset command to the signal switching module;
  • the signal switching module disconnects the second signal channel and connects the first signal channel, so that the data signal can sequentially pass through the input port, the third signal channel, and the signal switching module. module, the first signal channel is transmitted to the expansion module.
  • the user can independently switch between the signal switching module, the expansion module and the video module through buttons according to the actual situation of the user. It can be understood that when the signal switching module is connected to the expansion module, if the user wants to watch a video with higher definition and smoothness, he can input the button according to the first button instruction to make the signal switching module switch to the video module. When the signal switching module is connected with the video module, if the user wants to release the connection between them, the signal switching module can be switched to be connected with the expansion module by inputting a button according to the second button instruction. Effectively improve the flexibility and practicability of the docking station.
  • the docking station has a single uplink port.
  • the screen projection device has at least two input ports, and the method further includes:
  • the change signal indicates that the port input to the first signal source is changed from a first input port to a second input port;
  • a control signal is generated according to the change signal, and the connection with the first input port is cut off according to the control signal, and the connection with the second input port is turned on.
  • the input port is configured to connect to an upstream device, including but not limited to any port of a known type, such as a USB Type-C interface, a USB interface, and the like.
  • the input port at least includes a Universal Serial Bus Type-C interface USB Type-C, a display interface DP and a USB interface.
  • the DP interface and the USB interface usually serve as input ports of the same upstream device at the same time.
  • the docking station can have four input ports, including two USB Type-C interfaces, one DP interface and one USB3.0 interface, which can meet the connection requirements of most current terminal devices (ie, upstream devices) and realize The free switching between the docking station and up to three terminal devices reduces the trouble of plugging and unplugging cables when traditional devices switch connections, and significantly improves the user experience when using multiple terminal devices collaboratively without affecting The lifespan of the docking station.
  • the method also includes:
  • the data input from the USB Type-C interface is converted into a USB data signal and a DP video signal, so that the USB data signal is output through the expansion module, and the DP video signal is output through the video module;
  • the standard Type-C signal input from the USB Type-C interface includes DP video signal and USB data.
  • the docking station includes a toggle switch configured to generate a change signal according to user requirements.
  • the switch includes a switch button, which generates a switch signal when the switch button is pressed by the user, receives a change signal generated by the switch under the control of the user, generates a control signal according to the change signal, and turns on and/or off according to the control signal connection to the input port.
  • the input ports include the first USB Type-C interface, the second USB Type-C interface, the DP interface and the USB3.0 interface.
  • the first USB Type-C interface After the docking station is powered on and initialized, each time the button is pressed, the first The port of the signal source is cyclically switched between the first USB Type-C interface, the second USB Type-C interface, and the combination of the DP interface and the USB3.0 interface.
  • the standard Type-C signal includes DP video signal and USB data, therefore, when connecting the first USB Type-C interface, the second USB Type-C interface or the combination of DP interface and USB3. Only one set of DP video signal and one set of USB data will be output.
  • the method further includes:
  • control the uplink device When the screen projection device is only connected to the uplink device, control the uplink device to supply power to the screen projection device.
  • the power supply connection of the upstream device to the docking station is cut off, and the power supply connection of the external power supply docking station is connected by using the fast charging identification protocol; when the docking station is only connected to the upstream device, no When connecting to an external power supply, cut off the power supply connection of the power supply to the docking station, and connect the power supply connection of the upstream device to the docking station.
  • the fast charging identification protocol includes the power transmission protocol (USB PD, USB Power Delivery), the Qualcomm fast charging protocol (QC, Quick Charge) or the MediaTek fast charging protocol (PE, Pump Express); among them, the PD fast charging protocol is provided by the USB A fast charging specification developed by the standardization organization (USB-IF, USB Implementers Forum), which can expand the charging capacity by 10 times, up to 100 watts.
  • the voltage of the external power supply and/or the uplink device can also be converted into a voltage of a preset voltage value according to the control signal, and the docking station can be powered by the voltage of the preset voltage value.
  • the method also includes:
  • the uplink device is initialized through a Creative Commons license (CC, Creative Commons license).
  • CC Creative Commons license
  • the uplink device connected to the input port is initialized through the CC protocol.
  • the application embodiment of the present application provides a schematic structural diagram of a docking station, as shown in FIG. 4 , the docking station includes:
  • At least two input ports 1 configured to connect to upstream devices, including but not limited to ports of any known type, such as USB Type-C interface, USB interface, etc.;
  • the conversion module 2 is configured to be connected to the input port 1, and according to the instruction of the control signal, the connection is cyclically switched between at least two input ports in sequence;
  • the control module is configured to receive the change signal, and generate a control signal according to the change signal and send it to the conversion module 2 .
  • the docking station provided by the application embodiment of the present application is provided with at least one data line configured to connect to an uplink device, the data line is provided with at least one input port, and the data line is conductively connected to the docking station;
  • the docking station has an installation position corresponding to the input port of the data cable, and the input port of the data cable is detachably connected to the installation position, so that both ends of the data cable can be connected to the docking station to form a lanyard, which is convenient for users to expand Dock to carry.
  • the docking station has four input ports, including two USB Type-C interfaces, a DP interface and a USB3.0 interface, which can meet the connection requirements of most current terminal devices (ie upstream devices), and realize the docking station
  • the free switching of connections between up to three terminal devices reduces the trouble of plugging and unplugging cables when switching connections with traditional devices, and significantly improves the user experience when using multiple terminal devices collaboratively without affecting the docking station service life.
  • the docking station includes a toggle switch connected to the control module signal, the toggle switch is configured to generate a change signal according to user requirements, and send it to the control module, and after the control module detects the change signal, it passes the integrated circuit bus protocol (I2C, Inter -Integrated Circuit) sends a change signal to the conversion module 2, so that the conversion module 2 is turned on and/or disconnected from the input port 1.
  • I2C integrated circuit bus protocol
  • the switch includes a switch button 18, that is, the KEY shown in FIG. 4 , which generates a change signal when the button is pressed, and the control module receives the change signal and detects it. After detection, the change signal is sent to the switch through the I2C protocol.
  • Module 2 which makes switching module 2 on and/or disconnected from input port 1. Specifically, every time the button is pressed, the signal channel connected to the conversion module 2 is the signal channel of the first USB Type-C port 13, the signal channel of the second USB Type-C port 14, and the DP interface 15 and USB interface 16 The combined signal channels are cyclically switched.
  • the conversion module 2 is connected to the signal channel of the first USB Type-C port 13, the signal channel of the second USB Type-C port 14 or the DP interface 15 and USB interface 16 to form a signal channel, the conversion module 2 will and will only output a set of DP video signals and a set of USB data.
  • the docking station also includes:
  • the charging terminal 4 is configured to be connected to an external power supply, so that the external power supply supplies power to the internal power module of the docking station and the uplink device connected to the input port 1;
  • At least one data interface 5 is configured to connect to a load and perform data interaction with the uplink device connected to the input port 1 .
  • the load includes but is not limited to any known type of device.
  • a USB device is taken as an example.
  • the load includes a USB device, and the data interface 5 includes a USB interface.
  • the input port of the docking station includes a USB Type-C interface
  • the data interface includes two USB ports, SD interface and TF interface
  • the video port includes an HDMI interface, but it cannot be understood as a reference to the type and number of ports in the docking station According to the actual production and application requirements, the port type and quantity of the docking station can be adjusted.
  • the conversion module 2 is respectively connected to the input port 1 and the data interface 5 through the physical layer, so as to realize data interaction between the input port 1 and the data interface 5 .
  • the docking station also includes:
  • Video module 6 the video module 6 is connected to the conversion module 2 signal, when the conversion module 2 is connected to the DP interface, the video module 6 is configured to receive the DP video signal and/or USB Type- The C interface converts the received DP video signal into a standard HDMI high-definition video output through the DP video signal converted by the conversion module 2, and through the HDMI interface 17 connected to the video module 6;
  • Expansion module 7 is connected with conversion module 2, data interface 5 signals, is configured to receive the USB data signal that USB interface transmits through conversion module 2 and/or the USB data signal that USB Type-C interface converts through conversion module 2, And a group of USB data is expanded into multiple groups of USB data signals and transmitted to each data interface 5 .
  • Fig. 4 shows the situation that the expansion module 7 expands one set of USB data into two sets of USB data signals, but it cannot be understood as the expansion module 7 that expands a set of USB data into data signals.
  • the limitation on the number of groups can adjust the number of groups of extended USB data signals according to the design requirements of the docking station, for example, more than two groups or less than two groups.
  • the docking station further includes a transformer module 8, the transformer module 8 is electrically connected to the charging terminal 4 and/or the conversion module 2, and is configured to be connected to the external power supply connected to the charging terminal 4 and/or to the input port 1.
  • the upstream device supplies power to the internal power module.
  • the external power supply connected to the charging terminal 4 and/or the upstream device connected to the input port 1 supplies power to the control module, video module 6 and expansion module 7 through the transformer module 8 .
  • control module is also configured to make the voltage transformation module 8 convert the voltage of the external power supply and/or the upstream device into a voltage of a preset voltage value by sending a signal to the voltage transformation module 8 , and supply power to the control module, the video module 6 and the expansion module 7 with the voltage of the preset voltage value.
  • the preset voltage value is +5V
  • the voltage range of the external power supply and/or the upstream device is +5-20V.
  • control module includes a protocol module, and the protocol module is arranged between the charging terminal 4 and the conversion module 2.
  • the protocol module controls the charging terminal 4 through the fast charging protocol.
  • the connected external power supply performs fast charging for the uplink device connected to the input port 1 with a voltage exceeding the preset voltage value.
  • the fast charging protocol includes a PD fast charging protocol.
  • the protocol module is also configured to pass the CC protocol after turning on the external power supply and/or the uplink device to make the external power supply connected to the charging terminal 4 and/or the uplink device connected to the input port 1 supply power to the internal power module. Initialize the upstream device connected to input port 1.
  • the voltage transformation module 8 includes a first chip Q1 and a first MOS transistor Q2. There are many optional models of the first chip Q1.
  • the first chip Q1 includes but is not limited to any A chip of a known model, in this embodiment, the model of the first chip Q1 is GTD3419;
  • the first MOS transistor Q2 is an N-type metal oxide semiconductor field effect transistor (NMOS, Negative Channel Metal Oxide Semiconductor).
  • NMOS N-type metal oxide semiconductor field effect transistor
  • the first pole of the first MOS transistor Q2 is the drain D
  • the first The second level is the source S.
  • the drain D of the first MOS transistor Q2 is connected to the first chip Q1, the source S of the first MOS transistor Q2 is grounded, and the source S of the first MOS transistor Q2 is connected in parallel with the gate G of the first MOS transistor Q2.
  • first terminal of the first chip Q1 is connected to VBUS_M
  • second terminal of the first chip Q1 is connected to BUS_5V
  • third terminal of the first chip Q1 is connected to the drain D of the first MOS transistor Q2
  • second terminal of the first chip Q1 A first resistor R1 is connected in parallel between one end and the third end of the first chip Q1.
  • the voltage transformation circuit 8 also includes a second chip U1 and a second MOS transistor Q3.
  • the second chip U1 includes but is not limited to any A chip of a known model, in a specific embodiment, the model of the second chip U1 is MT3905;
  • the second MOS transistor Q3 is an N-type metal-oxide-semiconductor field effect transistor.
  • the first stage of the second MOS transistor Q3 is a drain D, and the second stage is a source S.
  • the gate G of the second MOS transistor Q3 receives a high level, the second MOS transistor Q3 is in a conduction state; when the gate G of the second MOS transistor Q3 receives a low level, the second MOS transistor Q3 is in a cut-off state.
  • the drain D of the second MOS transistor Q3 is connected to the second chip U1, the source S of the second MOS transistor Q3 is grounded, and the gate G of the second MOS transistor Q3 is used to receive the signal sent by the PD control module, that is, GPIO6 signal shown in 7.
  • the signal input terminal VIN of the second chip U1 is connected to VBUS_M
  • the enable terminal EN of the second chip U1 is connected to the drain D of the second MOS transistor Q3
  • the SW terminal of the second chip U1 is connected to BUS_SV through the first inductor L1;
  • a capacitor is connected between the SW terminal of the second chip U1 and the BST terminal of the second chip U1, and a third resistor R3 is connected in parallel between the signal input terminal VIN of the second chip U1 and the enabling terminal EN of the second chip U1, and the second chip A fourth resistor R4 is connected in parallel between the SW terminal of U1 and the FB terminal of the second chip U1, and the FB terminal of the second chip U1 is grounded through the fifth resistor R5.
  • the docking station also includes an on-off module, which is used to receive the on-off signal sent by the control module, and according to the on-off signal, conduct the power supply line between the charging terminal 4 and the transformer module 8 , cutting off the power supply line between the conversion module 2 and the transformer module 8;
  • the power supply line between the charging terminal 4 and the transformation module 8 is cut off, and the power supply line between the conversion module 2 and the transformation module 8 is turned on.
  • the on-off module includes a MOS switch 9, the MOS switch 9 is arranged between the charging terminal 4 and the transformer module 8, and between the input port 1 and the transformer module 8, and the MOS switch 9 is used to The signal sent by the control module switches the connection between the charging terminal 4 and the power supply line of the transformer module 8, and between the input port 1 and the power supply line of the transformer module 8, thereby ensuring the safety of power consumption of the terminal equipment.
  • the MOS switch 9 switches the power supply between the charging terminal 4 and the input port 1 by the signal sent by the control module.
  • the command causes the MOS switch 9 to cut off the connection of the power supply line between the charging terminal 4 and the transformer module 8, and connect the power supply line between the input port 1 and the transformer module 8;
  • the control module issues an instruction to connect the MOS switch 9 to connect the power supply line between the charging terminal 4 and the transformer module 8, and cut off the connection between the input port 1 and the transformer module 8.
  • the power supply lines between the transformer modules 8 are connected to ensure the safety of power consumption of the terminal equipment.
  • the application embodiment of the present application also provides an exploded view and a three-dimensional schematic view of the docking station, as shown in FIG. 8 and FIG. 9 , including a housing 10 and a PCBA circuit board 20 .
  • the shell 10 includes a bottom shell 11, an upper shell 12, an end cover 13 and a plug 14.
  • the upper shell 12 and the bottom shell 11 are assembled up and down and enclose to form an accommodating chamber 101.
  • the end cover 13 covers the accommodating chamber.
  • One end of the accommodating chamber 101 is open, and the plug 14 covers the opening of the other end of the accommodating chamber 101 .
  • the PCBA circuit board 20 is arranged in the housing 10, specifically, the PCBA circuit board 20 is arranged in the accommodating cavity 101; the PCBA circuit board 20 is provided with different types of data interfaces and video ports, each data interface and video port All are exposed on the shell 10.
  • One end of the data line 30 is conductively connected with the PCBA circuit board 20, and the other end of the data line 30 extends out of the housing 10 and is connected to the input port 31, and one end surface of the housing 10 is provided with a socket configured to accommodate the data port 31.
  • the accommodating hole 102 when not in use, the data port 31 can be inserted into the accommodating hole 102 for storage.
  • the PCBA circuit board 20 is provided with a control switch 40 configured to cut off data output or cut off the power supply of the docking station, and the control switch 40 is exposed outside the casing 10 .
  • the control switch 40 includes a switch element 41 and a button 42, the switch element 41 is arranged on the PCBA circuit board 20 and connected with the circuit on the PCBA circuit board 20, and the button 42 covers the switch element 41 And exposed to the shell 10.
  • a through hole 103 is opened on the surface of the housing 10 , and the button 42 is exposed on the surface of the housing 10 through the through hole 103 .
  • Described PCBA circuit board 20 is also provided with indicator light 50, and this indicator light 50 is positioned at the side of switch element 41, and this button 42 is a transparent button and covers indicator light 50; And, described indicator light 50 is two, All of them are LED lamps, which are symmetrically arranged on both sides of the switch element 41 .
  • the data interfaces provided on the PCBA circuit board 20 include a USB interface 61 and an SD/TF interface 62 , and both the USB interface 61 and the SD/TF interface 62 are exposed to the casing 10 .
  • the input port 31 When in use, the input port 31 is plugged into the computer, and an external display device (such as a projector, a display screen, etc.) Work.
  • an external display device such as a projector, a display screen, etc.
  • the data output can be cut off by pressing the button 42 to make the screen black, or the power supply of the docking station can be directly cut off, so that the docking station is in a shutdown state when it is connected to a computer.
  • the data output can be cut off or the power supply of the docking station can be cut off by using the control switch, so that the user can quickly control the data output by simply manipulating the control switch without plugging or unplugging the connector, saving time and effort , which brings convenience to use.
  • control device 1000 includes:
  • the detection module 1001 is configured to detect the image frame input by the first signal source of the screen projection device, and obtain a detection result
  • the control module 1002 is configured to stop outputting the image frame of the first signal source when the detection result meets the set condition.
  • control module 1002 is configured to:
  • Image frames that are allowed to be output by the screen projection device are set in the white list.
  • the device before the detection of the image frame input by the first signal source of the screen projection device, the device further includes:
  • An acquisition module configured to acquire first data from the first signal source; the first data represents at least one image frame that needs to be output by the screen projection device;
  • a generating module configured to generate the white list based on the acquired first data.
  • control module 1002 is configured to:
  • control module 1002 stops outputting the image frame of the first signal source, including one of the following:
  • the brightness of the image frame input by the first signal source is adjusted to the minimum.
  • control module 1002 when the control module 1002 stops outputting the image frame of the first signal source, it is also configured to:
  • the prompt signal includes at least one of music, light, and prompt sound.
  • the device also includes:
  • the second control module is configured to, after the stop outputting the image frame of the first signal source, resume the output when the detection result does not meet the set condition, or when an interruption signal is received An image frame of the first signal source.
  • the screen projection device includes a video module, an extension module, a signal switching module, and at least one input port; wherein, the video module includes at least one video interface, and the extension module includes at least one data interface, so The above-mentioned input port is used for electrical connection with the upstream device.
  • control module 1002 is configured to:
  • the signal switching module After the signal switching module receives the switching instruction, it disconnects the first signal channel between the signal switching module and the expansion module, and connects the second signal channel between the signal switching module and the video module so that the video signal can be transmitted to the video module sequentially through the input port, the third signal channel between the signal switching module and the input port, the signal switching module, and the second signal channel.
  • the device also includes:
  • the first determination module is configured to determine whether the data interface is in an idle state; when the data interface is in an idle state, it is determined that the second setting condition is satisfied; the data interface represents a data interface connected to the first signal channel.
  • the expansion module further includes at least one network interface
  • the device further includes:
  • the second determination module is configured to determine whether the network interface is in an idle state; when the network interface is in an idle state, it is determined that the second setting condition is met; the network interface represents a network interface connected to the first signal channel.
  • the device also includes:
  • the third judging module is configured to judge that the second setting condition is satisfied when the screen projection device receives the set first button instruction
  • the sending module is configured to send a reset instruction to the signal switching module when the screen projection device receives the set second button instruction;
  • the signal switching module disconnects the second signal channel and connects the first signal channel, so that the data signal can sequentially pass through the input port, the third signal channel, and the signal switching module. module, the first signal channel is transmitted to the expansion module.
  • the screen projection device has at least two input ports, and the device further includes:
  • the second detection module is configured to detect whether a change signal is received; the change signal indicates that the port input to the first signal source is changed from a first input port to a second input port;
  • the third control module is configured to generate a control signal according to the change signal if the change signal is received, and cut off the connection with the first input port and turn on the connection with the second input port according to the control signal .
  • the input port at least includes a Universal Serial Bus Type-C interface USB Type-C, a display interface DP and a USB interface.
  • the device also includes:
  • the output module is configured to convert the data input from the USB Type-C interface into a USB data signal and a DP video signal, so that the USB data signal is output through the expansion module, and the DP video signal is output through the video module;
  • the device also includes:
  • the fourth control module is configured to control the external power supply to supply power to the uplink device when the screen projection device is connected to an external power supply and an uplink device at the same time;
  • control the uplink device When the screen projection device is only connected to the uplink device, control the uplink device to supply power to the screen projection device.
  • the device also includes:
  • the initialization module is configured to initialize the uplink device through Creative Commons License Agreement CC.
  • the detection module, control module, acquisition module, generation module, second control module, first judgment module, second judgment module, third judgment module, sending module, second detection module, third control module , the output module, the fourth control module, and the initialization module can pass through the processor in the device, such as a central processing unit (CPU, Central Processing Unit), a digital signal processor (DSP, Digital Signal Processor), a micro control unit (MCU, Microcontroller) Unit) or programmable gate array (FPGA, Field-Programmable Gate Array) and other implementations.
  • CPU Central Processing Unit
  • DSP Digital Signal Processor
  • MCU Microcontroller
  • FPGA Field-Programmable Gate Array
  • Fig. 11 is a schematic diagram of the hardware structure of the screen projection device according to the embodiment of the present application. As shown in Fig. 11, the screen projection device includes:
  • Communication interface 1101 capable of exchanging information with other devices such as network devices;
  • the processor 1102 is connected to the communication interface 1101 to implement information interaction with other devices, and is used to execute the methods provided by one or more technical solutions on the electronic device side when running the computer program. Instead, the computer program is stored on the memory 1103 .
  • the communication interface 1101 is configured to detect the image frame input by the first signal source of the screen projection device, and obtain a detection result
  • And it is configured to stop outputting the image frame of the first signal source when the detection result meets the set condition.
  • the communication interface 1101 is configured as:
  • Image frames that are allowed to be output by the screen projection device are set in the white list.
  • the communication interface 1101 is configured as:
  • first data is obtained from the first signal source; the first data represents at least one image that needs to be output by the screen projection device frame;
  • the processor 1102 is configured to:
  • the white list is generated based on the acquired first data.
  • the communication interface 1101 is configured as:
  • the communication interface 1101 stops outputting the image frame of the first signal source, including one of the following:
  • the brightness of the image frame input by the first signal source is adjusted to the minimum.
  • the communication interface 1101 when the communication interface 1101 stops outputting the image frame of the first signal source, it is also configured to:
  • the prompt signal includes at least one of music, light, and prompt sound.
  • the communication interface 1101 is further configured as:
  • the screen projection device further includes a video module, an extension module, a signal switching module, and at least one input port; wherein, the video module includes at least one video interface, and the extension module includes at least one data interface, The input port is used for electrical connection with the upstream device.
  • the processor 1102 is configured to:
  • the signal switching module After the signal switching module receives the switching instruction, it disconnects the first signal channel between the signal switching module and the expansion module, and connects the second signal channel between the signal switching module and the video module so that the video signal can be transmitted to the video module sequentially through the input port, the third signal channel between the signal switching module and the input port, the signal switching module, and the second signal channel.
  • the communication interface 1101 is further configured as:
  • the data interface represents a data interface connected to the first signal channel
  • the processor 1102 is further configured to:
  • the communication interface 1101 is further configured as:
  • the network interface represents a network interface connected to the first signal channel
  • the processor 1102 is further configured to:
  • the processor 1102 is further configured to:
  • the screen projection device When the screen projection device receives the set second button command, it sends a reset command to the signal switching module;
  • the signal switching module disconnects the second signal channel and connects the first signal channel, so that the data signal can sequentially pass through the input port, the third signal channel, and the signal switching module. module, the first signal channel is transmitted to the expansion module.
  • the screen projection device has at least two input ports, and the communication interface 1101 is further configured as:
  • the change signal indicates that the port input to the first signal source is changed from a first input port to a second input port;
  • the processor 1102 is further configured to:
  • a control signal is generated according to the change signal, and the connection with the first input port is cut off and the connection with the second input port is turned on according to the control signal.
  • the input port at least includes a Universal Serial Bus Type-C interface USB Type-C, a display interface DP and a USB interface.
  • the processor 1102 is further configured to:
  • the data input from the USB Type-C interface is converted into a USB data signal and a DP video signal, so that the USB data signal is output through the expansion module, and the DP video signal is output through the video module;
  • the processor 1102 is further configured to:
  • control the uplink device When the screen projection device is only connected to the uplink device, control the uplink device to supply power to the screen projection device.
  • the processor 1102 is further configured to:
  • the uplink device is initialized through Creative Commons License Agreement CC.
  • bus system 1104 various components in the screen projection device are coupled together through the bus system 1104 .
  • the bus system 1104 is used to realize connection and communication between these components.
  • the bus system 1104 also includes a power bus, a control bus and a status signal bus.
  • the various buses are labeled as bus system 1104 in FIG. 11 for clarity of illustration.
  • the memory 1103 in the embodiment of the present application is used to store various types of data to support the operation of the screen projection device. Examples of such data include: any computer program used to operate on the projection device.
  • the methods disclosed in the foregoing embodiments of the present application may be applied to the processor 1102 or implemented by the processor 1102 .
  • the processor 1102 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1102 or instructions in the form of software.
  • the aforementioned processor 1102 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like.
  • DSP Digital Signal Processor
  • the processor 1102 may implement or execute various methods, steps, and logic block diagrams disclosed in the embodiments of the present application.
  • a general purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a storage medium, and the storage medium is located in the memory 1103, and the processor 1102 reads information in the memory 1103, and completes the steps of the aforementioned method in combination with its hardware.
  • the docking station may be implemented by one or more Application Specific Integrated Circuits (ASIC, Application Specific Integrated Circuit), DSP, Programmable Logic Device (PLD, Programmable Logic Device), Complex Programmable Logic Device (CPLD, Complex Programmable Logic Device), field programmable gate array (FPGA, Field-Programmable Gate Array), general-purpose processor, controller, microcontroller (MCU, Micro Controller Unit), microprocessor (Microprocessor), or other electronic components Implementation for executing the aforementioned method.
  • ASIC Application Specific Integrated Circuit
  • DSP Programmable Logic Device
  • PLD Programmable Logic Device
  • CPLD Complex Programmable Logic Device
  • FPGA Field-Programmable Gate Array
  • controller controller
  • microcontroller MCU, Micro Controller Unit
  • microprocessor Microprocessor
  • the memory 1103 may be a volatile memory or a non-volatile memory, and may also include both volatile and non-volatile memories.
  • the non-volatile memory can be read-only memory (ROM, Read Only Memory), programmable read-only memory (PROM, Programmable Read-Only Memory), erasable programmable read-only memory (EPROM, Erasable Programmable Read-Only Memory) Only Memory), Electrically Erasable Programmable Read-Only Memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), Magnetic Random Access Memory (FRAM, ferromagnetic random access memory), Flash Memory (Flash Memory), Magnetic Surface Memory , CD, or CD-ROM (Compact Disc Read-Only Memory); magnetic surface storage can be disk storage or tape storage.
  • the volatile memory may be random access memory (RAM, Random Access Memory), which is used as an external cache.
  • RAM random access memory
  • RAM Random Access Memory
  • many forms of RAM are available, such as Static Random Access Memory (SRAM, Static Random Access Memory), Synchronous Static Random Access Memory (SSRAM, Synchronous Static Random Access Memory), Dynamic Random Access Memory Memory (DRAM, Dynamic Random Access Memory), synchronous dynamic random access memory (SDRAM, Synchronous Dynamic Random Access Memory), double data rate synchronous dynamic random access memory (DDRSDRAM, Double Data Rate Synchronous Dynamic Random Access Memory), enhanced Synchronous Dynamic Random Access Memory (ESDRAM, Enhanced Synchronous Dynamic Random Access Memory), Synchronous Link Dynamic Random Access Memory (SLDRAM, SyncLink Dynamic Random Access Memory), Direct Memory Bus Random Access Memory (DRRAM, Direct Rambus Random Access Memory ).
  • the memory 1103 described in the embodiment of the present application is intended to include but not limited to these and any other suitable types of memory.
  • the methods disclosed in the foregoing embodiments of the present application may be applied to the processor 1102 or implemented by the processor 1102 .
  • the processor 1102 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above-mentioned method may be completed by an integrated logic circuit of hardware in the processor 1102 or instructions in the form of software.
  • the aforementioned processor 1102 may be a general-purpose processor, DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like.
  • the processor 1102 may implement or execute various methods, steps, and logic block diagrams disclosed in the embodiments of the present application.
  • a general purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a storage medium, and the storage medium is located in the memory 1103, and the processor 1102 reads the program in the memory 1103, and completes the steps of the foregoing method in combination with its hardware.
  • the processor 1102 executes the program, it implements the corresponding processes implemented by the docking station in the various methods of the embodiments of the present application. For the sake of brevity, details are not repeated here.
  • the embodiment of the present application also provides a storage medium, that is, a computer storage medium, specifically a computer-readable storage medium, for example, including a memory 1103 storing a computer program, and the above-mentioned computer program can be processed by the screen projection device
  • the device 1102 is executed to complete the steps described in the foregoing method.
  • the computer-readable storage medium can be memories such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disk, or CD-ROM.
  • the disclosed device, screen projection device and method can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division.
  • the coupling, or direct coupling, or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be electrical, mechanical or other forms of.
  • the units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units; Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application can be integrated into one processing unit, or each unit can be used as a single unit, or two or more units can be integrated into one unit; the above-mentioned integration
  • the unit can be realized in the form of hardware or in the form of hardware plus software functional unit.
  • the above-mentioned integrated units of the present application are realized in the form of software function modules and sold or used as independent products, they can also be stored in a computer-readable storage medium.
  • the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium and includes several instructions for Make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: various media capable of storing program codes such as removable storage devices, ROM, RAM, magnetic disks or optical disks.
  • first”, “second”, etc. are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence.

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Abstract

本申请公开了一种控制方法、装置、投屏设备及存储介质，包括：投屏设备检测所述投屏设备的第一信号源输入的图像帧，得到检测结果；在所述检测结果符合设定条件的情况下，停止输出所述第一信号源的图像帧。

Description

控制方法、装置、投屏设备及存储介质
相关申请的交叉引用
本申请基于申请号为202210467354.1、申请日为2022年04月29日、申请号为202210725015.9、申请日为2022年06月24日、申请号为202123309590.0、申请日为2021年12月27日、申请号为202111609646.6、申请日为2021年12月27日、申请号为202123309574.1、申请日为2021年12月27日、申请号为202210996816.9、申请日为2022年08月19日的中国专利申请提出，并要求以上中国专利申请的优先权，以上中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请属于电子设备技术领域，尤其涉及一种控制方法、装置、投屏设备及存储介质。
背景技术
相关技术中，投屏设备的视频端口与显示器等设备连接，然而，在投屏过程中，为了保护隐私，习惯把传输线拔掉，待需要时再重新连接，使用起来较为不便。
发明内容
有鉴于此，本申请实施例提供一种控制方法、装置、投屏设备及存储介质，以至少解决相关技术中投屏设备使用不便的问题。
本申请实施例的技术方案是这样实现的：
本申请实施例提供了一种控制方法，应用于投屏设备，包括：
检测所述投屏设备的第一信号源输入的图像帧，得到检测结果；
在所述检测结果符合设定条件的情况下，停止输出所述第一信号源的图像帧。
本申请实施例还提供了一种控制装置，所述装置包括：
检测模块，配置为检测所述投屏设备的第一信号源输入的图像帧，得到检测结果；
控制模块，配置为在所述检测结果符合设定条件的情况下，停止输出所述第一信号源的图像帧。
本申请实施例还提供了一种投屏设备，所述投屏设备包括：存储器、处理器，所述存储器存储有可在处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现上述任一控制方法的步骤。
本申请实施例还提供了一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机可执行指令，该计算机可执行指令配置为执行上述任一控制方法的步骤。
本申请实施例的方案中，检测投屏设备的第一信号源输入的图像帧，得到检测结果；在检测结果符合设定条件的情况下，停止输出第一信号源的图像帧。基于本申请实施例提供的方案，在投屏设备将信号源的图像帧输出以实现投屏的过程中，当不需要显示当前投屏信息时，自动改变投屏信息，既保护隐私，又无需反复插拔传输线，为使用带来了很大便利。
附图说明
图1为本申请实施例提供的控制方法的流程示意图；
图2为本申请应用实施例提供的一种扩展坞整体模块架构示意图；
图3为本申请应用实施例提供的一种扩展坞结构示意图；
图4为本申请应用实施例提供的一种扩展坞结构示意图；
图5为本申请实施例提供的一种转换模块的电路结构示意图；
图6为本申请实施例提供的一种变压模块的电路结构示意图；
图7为本申请实施例提供的一种变压模块的电路结构示意图；
图8为本申请实施例提供的一种扩展坞爆炸图；
图9为本申请实施例提供的一种扩展坞立体示意图；
图10为本申请实施例提供的控制装置的结构示意图；
图11为本申请实施例提供的投屏设备的结构示意图。
附图标识说明：
10-外壳；11-底壳；12-上壳；13-端盖；14-堵头；101-容置腔；102-容置孔；103-通孔；20-PCBA电路板；30-数据线；31-输入端口；40-控制开关；41-开关元器件；42-按键；50-指示灯；61-USB接口；62-SD/TF接口。
具体实施方式
下面结合附图及具体实施例对本申请作进一步详细的说明。
以下描述中，为了说明而不是为了限定，提出了诸如特定系统结构、技术之类的具体细节，以便透彻理解本申请实施例。然而，本领域的技术人员应当清楚，在没有这些具体细节的其它实施例中也可以实现本申请。在其它情况中，省略对众所周知的系统、装置以及方法的详细说明，以免不必要的细节妨碍本申请的描述。
本申请中的投屏设备包括但不限于扩展坞、HDMI投屏线、无线投屏器等具备将图像帧投屏到显示设备能力的电子设备。
全文说明书以扩展坞为具体实施例对本申请作进一步详细的说明。
扩展坞(Docking Station)，又称端口复制器(Port Replicator)，是专为笔记本电脑设计的一种外置设备。扩展坞通过复制甚至扩展笔记本电脑的端口，可使笔记本电脑与多个配件或外置设备(如电源适配器、网线、鼠标、外置键盘、打印机及外置显示器)方便地一站式连接。通过扩展坞扩展的接口可以同时工作。
扩展坞可以实现将信号源的图像帧(或视频)传送至扩展坞外接的显示设备的投屏功能。实际应用时，扩展坞中的视频端口，例如显示接口(DP，DisplayPort)、高清多媒体接口(HDMI，High Definition Multimedia Interface)、视频图形阵列接口(VGA，Video Graphics Array)、通用串行总线C类型接口(USB Type-C，Universal Serial Bus Type-C)等与显示设备连接，在投屏过程中，为了保护隐私，当用户不希望将信号源输出的图像帧进行投屏时，只能将扩展坞与信号源设备之间或者扩展坞与显示设备之间的传输线拔掉，待需要时再重新连接。
基于此，本申请提供了一种控制方法，应用于投屏设备，检测投屏设备的第一信号源输入的图像帧，得到检测结果；在检测结果符合设定条件的情况下，停止输出第一信号源的图像帧。基于本申请实施例提供的方案，在投屏设备将信号源的图像帧输出以实现投屏的过程中，当不需要显示当前投屏信息时，自动改变投屏信息，既保护隐私，又无需反复插拔传输线，为使用带来了很大便利。
下面结合附图及具体实施例对本申请作进一步详细的说明。
本申请实施例提供了一种控制方法，应用于投屏设备，如图1所示，所述方法包括：
步骤101：检测所述投屏设备的第一信号源输入的图像帧，得到检测结果。
实际应用中，第一信号源可以由与扩展坞连接的上行设备提供，上行设备包括但不限于笔记本电脑、平板电脑等具备图像或视频输出能力的电子设备。扩展坞的一个端口与上行设备相连，此端口一般为USB Type-C母座接口或者带有线电视电缆(cable)的公座接口，上行设备提供需要被投屏显示的信号源(即第一信号源)，上行设备输出的图像帧从此端口输入给扩展坞。扩展坞的视频端口与下行设备相连，视频端口可以是DP接口、HDMI接口、VGA接口、USB Type-C接口等，下行设备可以显示从扩展坞的视频端口输出的图像帧，下行设备可以是显示器等显示设备。这里，检测上行设备输入给扩展坞的图像帧，具体地，包括但不限于检测图像帧的图像内容、亮度信息、图像尺寸等。
步骤102：在所述检测结果符合设定条件的情况下，停止输出所述第一信号源的图像帧。
本申请实施例中，设定条件用于判定第一信号源输入的图像帧是否为不需要进行投屏的图像帧。示例性地，设定条件包括但不限于：图像帧中存在非法图像内容、图像帧中存在弹窗，输入的图像帧并非用户期望投屏的图像帧等。实际应用时，可以通过设置黑白名单，比对图像帧中的图像内容和/或图像特征，来确定第一信号源输入的图像帧是否满足设定条件。
在本申请实施例中，在投屏过程中，当不需要显示当前投屏信息时，自动改变投屏信息，既保护隐私，又无需反复插拔传输线，为使用带来了很大便利。
此外，实际应用时，还可以通过中断信号来实现停止投屏。具体地，可以通过按键或触摸指令或语音指令发出中断信号，从而停止输出第一信号源的图像帧。在该方案的基础上，当接收到中断信号时，可以根据第一信号源输入的图像帧的检测结果，来决定是立即停止输出第一信号源的图像帧、忽略中断信号或者延迟停止输出第一信号源的图像帧。例如，在第一信号源输出的为全屏播放的视频文件的情况下，当接收到中断信号时，可以忽略中断信号，或者等视频文件停止播放或退出全屏播放后再停止输出第一信号源的图像帧，以避免因中断信号的误触发而停止投屏。
接下来，对如何判定检测结果是否满足设定条件进行详细说明：
在一实施例中，所述在所述检测结果符合设定条件的情况下，停止输出所述第一信号源的图像帧，包括：
当所述第一信号源当前输入的图像帧和设定的白名单中的图像帧不匹配时，停止输出所述第一信号源的图像帧。
其中，所述白名单中设置了允许所述投屏设备输出的图像帧。
本申请实施例中，将第一信号源输入的图像帧和设定的白名单中的图像帧进行比对，当第一信号源输入的图像帧不在设定的白名单中时，扩展坞的视频端口就停止向下行设备输出图像帧。
实际应用时，设定的白名单存储有允许投屏的图像帧。具体应用时，根据用户的投屏需求，可以针对当前要投屏的内容专门设置白名单。基于此，在一实施例中，在所述检测所述扩展坞的第一信号源输入的图像帧之前，所述方法还包括：
从所述第一信号源获取第一数据；所述第一数据表征需要通过所述投屏设备输出的至少一个图像帧；
基于获取到的第一数据，生成所述白名单。
本申请实施例中，在开始投屏前，可以基于第一信号源中需要被投屏显示的图像帧生成白名单，存储在扩展坞中。例如，在对幻灯片或者图像进行投屏的场景之下，可以将幻灯片或者图像以图像帧的形式存储在扩展坞中，作为设定的白名单，在投屏过程中，一旦第一信号源输入了白名单以外的图像帧，比如上行设备的显示画面由全屏显示幻灯片的情 况切换至桌面显示的情况，则认为第一信号源输入的图像帧与白名单中的图像帧不匹配，此时，扩展坞停止输出第一信号源的图像帧。进一步地，在生成白名单时，也可以只存储上行设备中需要被投屏显示的图像帧的缩略图，以节省扩展坞的存储空间。
在一实施例中，所述在所述检测结果符合设定条件的情况下，停止输出所述第一信号源的图像帧，包括：
当所述第一信号源当前输入的图像帧的特征和设定的黑名单中的特征匹配时，停止输出所述第一信号源的图像帧；其中，
所述黑名单的特征包括以下至少一项：
表征图像帧中出现弹窗的特征；
表征图像帧中出现非法内容的特征。
本申请实施例中，基于图像识别和机器学习，可以预先学习表征图像帧中出现弹窗的特征和/或表征图像帧中出现非法内容的特征，基于学习得到的此类特征生成黑名单。在投屏过程中，通过对第一信号源输入的图像帧进行实现的图像识别及图像特征提取，判断第一信号源输入的图像帧是否存在与黑名单中的图像特征相匹配的图像特征，如果第一信号源输入的图像帧的图像特征与黑名单中的任一图像特征相匹配，则认为第一信号源输入的图像帧中出现弹窗或者非法图像内容，此时，扩展坞停止输出第一信号源的图像帧。
实际应用时，黑名单中的图像特征的类别可以根据用户需要进行设置，包括但不限于表征图像帧中出现弹窗的特征和/或表征图像帧中出现非法内容的特征。
在一实施例中，所述停止输出所述第一信号源的图像帧，包括以下之一：
输出第二信号源的图像帧；
输出所述投屏设备预存的图像帧；
将所述第一信号源输入的图像帧的亮度调为最低。
在实际应用中，第二信号源为除了上行设备(即需要被投屏显示的第一信号源)以外的其他输入设备，形态可能为存储设备(如U盘)、手机、硬盘等，第二信号源中可以存储与上行设备输入给扩展坞的图像帧无关的图片或视频信息。
在实际应用中，扩展坞预存的图像帧可存储在带电可擦可编程只读存储器(EEPROM，Electrically Erasable Programmable read only memory)、falsh存储器等存储器中，扩展坞中可以预存与上行设备输入给扩展坞的图像帧无关的图片或视频信息。
在实际应用中，可以通过扩展坞的内部电路，将上行设备或下行设备的显示亮度调为最低，以使下行设备显示为黑屏，从而避免第一信号源的图像帧在下行设备中显示，达到停止输出第一信号源的图像帧的目的。
本申请实施例中，扩展坞的视频端口停止向下行设备输出上行设备输入给扩展坞的图像帧，简单来说可以通过两种方法实现，一种方法是使下行设备显示与上行设备输入给扩展坞的图像帧无关的图片或视频信息，另一种方法是使下行设备显示为黑屏。
在实际应用中，可以利用数据选择器(MUX，multiplexer)使下行设备显示与上行设备输入给扩展坞的图像帧无关的图片或视频信息。
在一实施例中，在所述停止输出所述第一信号源的图像帧的同时，所述方法还包括以下至少之一：
屏蔽所述第一信号源输入的音频；
发出提示信号；其中，所述提示信号包括音乐、灯光、提示音中的至少一项。
本申请实施例中，在扩展坞的视频端口停止向下行设备输出上行设备输入给扩展坞的图像帧的同时，扩展坞可以将下行设备的声音设为静音，或者，扩展坞可以发出提示信号，以提示用户扩展坞当前投屏的并非第一信号源的图像帧。
在一实施例中，在所述停止输出所述第一信号源的图像帧之后，所述方法还包括：
在所述检测结果不符合设定条件的情况下，或者，在接收到中断信号的情况下，恢复 输出所述第一信号源的图像帧。
这里，中断信号可以通过按键或触摸指令或语音指令发出，以通过指令方式恢复输出第一信号源的图像帧。
此外，在停止输出第一信号源的图像帧之后，还可以继续实时检测第一信号源输入的图像帧，并根据检测结果决定是否恢复输出第一信号源的图像帧。例如，在扩展坞的视频端口停止向下行设备输出图像帧之后，当第一信号源输入的图像帧在设定的白名单中时，或者，当第一信号源输入的图像帧的特征与设定的黑名单中所有特征均不匹配时，扩展坞恢复输出第一信号源的图像帧。
在一实施例中，在停止输出第一信号源的图像帧之后，还可以实时检测第一信号源是否被切换，当检测到第一信号源被切换时，自动恢复输出第一信号源的图像帧。例如，最开始用A设备作为第一信号源，在停止输出第一信号源的图像帧之后，检测到切换为B设备作为第一信号源，此时，自动恢复输出第一信号源的图像帧。
本申请实施例的方案中，检测投屏设备的第一信号源输入的图像帧，得到检测结果；在检测结果符合设定条件的情况下，停止输出第一信号源的图像帧。基于本申请实施例提供的方案，投屏设备的视频端口与显示器等设备连接，在投屏过程中，当不需要显示当前投屏信息时，自动改变投屏信息，当需要显示当前投屏信息时，自动恢复投屏信息，既保护隐私，又无需反复插拔传输线，为使用带来了很大便利。
基于上文实施例提供的应用于投屏设备的控制方法，本申请应用实施例还提供了一种上述应用于投屏设备的控制方法适用的扩展坞整体模块架构，如图2所示，包括：
供电输入端口，电压范围为3.3V-48V，是给上行设备和下行设备供电的端口；
P0C，是扩展坞和上行设备连接的端口，一般为USB Type-C母座或者带cable的公座；
电源管理控制模块，配置为电源的控制，主要配置为给上行设备充电；
电压转换模块，配置为将输入的3.3V-48V电压转化为固定5V电压，给其他端口5V供电；
电源传输管理(PD，Power Delivery)通讯模块，配置为完成设备(一般为笔记本电脑或者平板电脑等)和供电适配的通讯，确保适配器以最大功率供电，比如100W PD或者240W PD；
集成控制模块，配置为完成USB Type-C接口转换为HDMI、VGA、USB(USB Type-A/USB Type-C)、RJ45、SD/TF、audio等接口，并能同时工作；
P1，另一输入设备，形态可能为存储设备(如U盘)、手机、硬盘、EEPROM、falsh IC等，被切换后信息存贮至其中；
数据选择器，配置为决定下行数据来源于P0或者P1，默认P0为长通状态；
视频端口，主要配置为视频源与显示器等设备的连接，也支持携带音频、USB和其他形式的数据，包含DisplayPort和USB Type-C、HDMI、VGA等物理外形；其中，DP接口为DP2.0接口，DP2.0全称是DisplayPort2.0，由管理方VESA视频电子标准协会于2019年发布，是一种数字式影音数据交换协议；
RJ45接口，布线系统中信息插座(即通信引出端)连接器的一种，是标准8位模块化接口的俗称；
SD/TF接口，存储卡的两种不同的形态；
音频输出接口，配置为音频输出；
USB接口，配置为数据传输和充电；
其他类型接口。
在投屏过程中，当不需要显示当前投屏信息时，自动改变投屏信息，当需要显示当前投屏信息时，自动恢复投屏信息，既保护隐私，又无需反复插拔传输线，为使用带来了很大便利。
所述扩展坞整体模块架构还包括：
人机交互件，配置为与用户进行信息交互，形态可以为开关，外露于扩展坞外壳；
检测件，配置为检测视频源与显示器等设备的连接状态；
控制件，配置为完成DP2.0信号的检测、断开、恢复连接控制等功能，其包含检测电路和控制电路，配置为实现视频源与显示器等设备的连接与否检测，断开连接和恢复连接的控制等，例如，针对HDMI口，控制件当检测到按键触发时，通过检测、断开、恢复HDMI_HPD_IN的信号，达到对断开显示和恢复显示的功能；该人机交互件为触发断开显示和恢复显示功能的开关。
通过配合设置人机交互件、检测件和控制件，投屏中，不需要断开连线，只需要轻触人机交互件一次，即可断开投屏显示，再次轻触人机交互件即可恢复正常投屏，无需反复插拔连接，一键断开投屏，保护隐私，还可一键恢复投屏，为使用带来了很大的便利。
在一实施例中，所述投屏设备包括视频模块、扩展模块、信号切换模块以及至少一个输入端口；其中，所述视频模块包括至少一个视频端口，所述扩展模块包括至少一个数据接口，输入端口用于与上行设备端电连接。
图3示出了本申请应用实施例提供的一种扩展坞结构示意图。具体地，视频端口可以为HDMI接口，HDMI可以同时发送音频和视频信号，由于音频和视频信号采用同一条线材，大大简化系统线路的安装难度。数据接口可以为USB3.0接口、USB2.0接口、SD接口、TF接口以及USB Type-C接口等。通过设置多个数据接口以提高扩展坞的适用性。输入端口包括USB Type-C接口，随着USB Type-C接口在笔记本和手机上的普及，USB Type-C接口越来越受到消费者的喜爱。因此将拓展坞的上行端口也设计为USB Type-C接口，以适应市场的发展需求。
在相关技术中，扩展坞的视频输出只能支持8K 30帧的视频清晰度输出，无法切换到更高清晰流畅度的视频输出，不能满足使用者更好的观赏需求。基于此，在一实施例中，所述投屏设备输出所述第一信号源的图像帧，包括：
当满足第二设定条件时，向信号切换模块发送切换指令；
所述信号切换模块接收到切换指令后，断开所述信号切换模块与所述扩展模块之间的第一信号通道，并连通所述信号切换模块与所述视频模块之间的第二信号通道，以使视频信号能依次通过输入端口、所述信号切换模块与输入端口之间的第三信号通道、所述信号切换模块、所述第二信号通道传输至所述视频模块。
本申请实施例通过在满足第二设定条件时，将与扩展模块相连接的信号通道资源供给视频模块使用，使得视频模块在原有的信号通道的基础上又新增了一条信号通道，加大视频输出的传输量，从而达到实现更高清晰流畅度的视频输出，满足使用者更好的观赏需求。
具体地，所述输入端口与所述视频模块之间设有第四信号通道，以使所述视频信号能依次通过所述输入端口、所述第四信号通道以及所述视频模块输出。其中，第四信号通道为输入端口与视频模块之间的原有的信号通道。可以理解的，在未进行切换之前，输入端口既可通过第四信号通道与视频模块连接，又可依次通过第三信号通道、信号切换模块以及第一信号通道与扩展模块连接，在利用数据接口进行数据传输的同时，也可利用视频端口进行视频输出。
具体地，为了确保上行设备端的视频格式能顺利利用第二信号通道进行视频输出，可在向信号切换模块发送切换指令的同时，通过输入端口向上行设备端发送格式转换指令，令上行设备端预先将该视频格式转换成能通过第二信号通道传输的相应的格式类型。
具体地，第一信号通道包括RXP-RXN-TXP-TXN，第二信号通道包括RX2P-RX2N-RX3P-RX3N，第四信号通道包括RX0P-RX0N-RX1P-RX1N。如此设置，考虑到数据接口与输入端口之间主要用于数据传输，因数据传输涉及数据输出与数据输入，因此需要相应地配备相应的差分输入端(RXP-RXN)以及差分输出端(TXP-TXN)，通过差 分输入端与差分输出端相结合形成差分传输组用于数据传输，因此需要在第一信号通道以及第三信号通道上配置相应的四条传输线路。而当信号切换模块切换至与视频模块相连接时，由于主要涉及视频输出，因此只保留差分输入端(以视频模块的角度看即可输入)，又因为此时在第三信号通道上还有两条传输线路(TXP-TXN)被闲置，因此设计两组差分输入端RX2(RX2P-RX2N)以及RX3(RX3P-RX3N)。再连同在第四信号通道上配置的另外两组差分输入端RX0(RX0P-RX0N)以及RX1(RX1P-RX1N)，通过四组差分输入端配合作业以提高视频输出效果。
在一实施例中，所述方法还包括：
判断数据接口是否处于闲置状态；所述数据接口表征与第一信号通道连通的数据接口；
当数据接口处于闲置状态时，则判定为满足所述第二设定条件。
在本申请实施例中，当有数据接口处于闲置状态时，则将信号切换模块切换至与视频模块相连接，避免出现信号通道资源被闲置，造成资源浪费。
在实际应用中，由于数据接口与外置设备连接时，且数据接口必然会有电流产生，因此通过检测数据接口是否有电流产生，当检测出数据接口无电流产生时，则判定数据接口处于闲置状态，原理简单实用性强。
在一实施例中，所述扩展模块还包括至少一个网络接口，所述方法还包括：
判断网络接口是否处于闲置状态；所述网络接口表征与第一信号通道连通的网络接口；
当网络接口处于闲置状态时，则判定为满足第二设定条件。
这里，网络接口可以为RJ45接口。考虑到一般扩展模块上还会设有网络接口，上行设备端通过网络接口以进行网络连接。当有网络接口处于闲置状态时，则将信号切换模块切换至与视频模块相连接，避免出现信号通道资源被闲置，造成资源浪费。
实际应用中，由于现有的网络接口一般都会配置有检测是否顺利连接网络的装置，通过该装置检测出网络接口无连接网线时，则判定为网络接口处于闲置状态，原理简单实用性强。
在一实施例中，所述方法还包括：
当所述投屏设备接收到设定的第一按键指令时，则判定为满足第二设定条件；
当所述投屏设备接收到设定的第二按键指令时，向所述信号切换模块发送复位指令；
所述信号切换模块接收到复位指令后，断开所述第二信号通道，并连通所述第一信号通道，以使数据信号能依次通过输入端口、所述第三信号通道、所述信号切换模块、所述第一信号通道传输至所述扩展模块。
在实际应用时，使用者可根据自身的实际情况通过按键进行信号切换模块与扩展模块以及视频模块之间的自主切换。可以理解的，当信号切换模块与扩展模块相连接时，使用者若想观看更高清晰度和流畅度的视频时，可通过按照第一按键指令输入按键，使信号切换模块切换至与视频模块相连接；当信号切换模块与视频模块相连接时，使用者若想解除其之间的连接，可通过按照第二按键指令输入按键，使信号切换模块切换至与扩展模块相连接。有效提高扩展坞的灵活实用性。
相关技术中，扩展坞均为单上行端口，在多台电脑或手机之间进行切换时，需要先拔除在先连接的设备的连接线，再插上需要更换的设备的连接线，因此切换比较麻烦。另外，频繁的插拔也会影响扩展坞的性能，减少扩展坞的使用寿命。基于此，在一实施例中，所述投屏设备具有至少二个输入端口，所述方法还包括：
检测是否接收到变更信号；所述变更信号表征输入所述第一信号源的端口由第一输入端口变更为第二输入端口；
若接收到所述变更信号，则根据所述变更信号生成控制信号，并根据所述控制信号切 断与第一输入端口的连接，以及导通与第二输入端口的连接。
需要说明的是，所述输入端口配置为连接上行设备，包括但不限于任何一种已知型号的端口，如USB Type-C接口、USB接口等。
在一实施例中，输入端口至少包括一个通用串行总线C类型接口USB Type-C、一个显示接口DP和一个USB接口。
这里，DP接口和USB接口通常同时作为同一个上行设备的输入端口。
实际应用中，扩展坞可以具有四个输入端口，包括两个USB Type-C接口、一个DP接口和一个USB3.0接口，能够满足目前大部分终端设备(即上行设备)的连接需求，实现了扩展坞与至多三台终端设备之间连接的自由切换，减少了传统设备切换连接时存在的插拔连接线的麻烦，显著提升了用户协同使用多台终端设备时的体验，同时也不会影响扩展坞的使用寿命。
在一实施例中，所述方法还包括：
将从所述USB Type-C接口输入的数据转换为USB数据信号和DP视频信号，使所述USB数据信号通过扩展模块输出、所述DP视频信号通过视频模块输出；
或，将从所述USB接口输入的USB数据信号通过所述扩展模块输出，将从所述DP接口输入的DP视频信号通过所述视频模块输出。
需要说明的是，从USB Type-C接口输入的标准Type-C信号包含DP视频信号和USB数据。
在一实施例中，扩展坞包括切换开关，切换开关配置于根据用户需求生成变更信号。实际应用中，切换开关包括切换按键，当切换按键被用户按下时生成切换信号，接收切换开关在用户控制下生成的变更信号，根据变更信号生成控制信号，根据控制信号导通和/或切断与输入端口的连接。
实际应用中，输入端口包括第一USB Type-C接口、第二USB Type-C接口、DP接口和USB3.0接口，在扩展坞上电并初始化后，按键每被按下一次，输入第一信号源的端口在第一USB Type-C接口、第二USB Type-C接口、以及DP接口与USB3.0接口的组合间循环切换。
需要说明的是，标准Type-C信号包含DP视频信号和USB数据，因此，连接第一USB Type-C接口、第二USB Type-C接口或DP接口与USB3.0接口的组合时，会且仅会输出一组DP视频信号和一组USB数据。
为确保扩展坞的用电安全，在一实施例中，所述方法还包括：
当所述投屏设备同时连接外部电源和上行设备时，控制所述外部电源为所述上行设备供电；
当所述投屏设备仅连接所述上行设备时，控制所述上行设备为所述投屏设备供电。
这里，当扩展坞同时与上行设备、外部电源连接时，切断上行设备对扩展坞的供电连接，利用快充识别协议接通外部电源扩展坞的供电连接；当扩展坞仅与上行设备连接，未与外部电源连接时，切断电源对扩展坞的供电连接，接通上行设备对扩展坞的供电连接。其中，快充识别协议包括功率传输协议(USB PD，USB Power Delivery)、高通快充协议(QC，Quick Charge)或联发科快充协议(PE，Pump Express)；其中，PD快充协议是由USB标准化组织(USB-IF，USB Implementers Forum)制定的一种快速充电规范，可以将充电能力扩大为10倍，最高可达100瓦。
实际应用中，还可以根据控制信号将外部电源和/或上行设备的电压转换为预设电压值的电压，并以预设电压值的电压为扩展坞供电。
在一实施例中，所述方法还包括：
通过知识共享许可协议(CC，Creative Commons license)对所述上行设备进行初始化。
这里，在接通外部电源和/或上行设备，使充电端连接的外部电源和/或输入端口连接的上行设备为扩展坞供电后，通过CC协议对与输入端口连接的上行设备进行初始化。
为实现本申请实施例的方法，本申请应用实施例提供了一种扩展坞结构示意图，如图4所示，所述扩展坞包括：
至少二个输入端口1，配置为连接上行设备，包括但不限于任何一种已知型号的端口，如USB Type-C接口、USB接口等；
转换模块2，配置为连接输入端口1，根据控制信号指示，在至少二个输入端口间依次循环切换连接；
控制模块，配置为接收变更信号，并根据变更信号生成控制信号发送至转换模块2。
优选地，本申请应用实施例提供的扩展坞设置有至少一条配置为连接上行设备的数据线，数据线设有至少一个输入端口，数据线与扩展坞导电连接；
扩展坞设有与数据线设置的输入端口对应的安装位，数据线的输入端口可拆卸地连接安装位，以使数据线首尾两端均能连接于扩展坞形成挂绳，方便了用户对扩展坞进行携带。
优选地，扩展坞具有四个输入端口，包括两个USB Type-C接口、一个DP接口和一个USB3.0接口，能够满足目前大部分终端设备(即上行设备)的连接需求，实现了扩展坞与至多三台终端设备之间连接的自由切换，减少了传统设备切换连接时存在的插拔连接线的麻烦，显著提升了用户协同使用多台终端设备时的体验，同时也不会影响扩展坞的使用寿命。
进一步地，所述扩展坞包括与控制模块信号连接的切换开关，切换开关配置为根据用户需求生成变更信号，并发送至控制模块，控制模块检测变更信号后，通过集成电路总线协议(I2C，Inter-Integrated Circuit)发送变更信号至转换模块2，使转换模块2导通和/或切断与输入端口1的连接。
优选地，所述切换开关包括切换按键18，即图4中示出的KEY，当按键被按下时生成变更信号，控制模块接收变更信号并进行检测，检测后通过I2C协议发送变更信号至转换模块2，使转换模块2导通和/或切断与输入端口1的连接。具体地，按键每被按下一次，转换模块2连接的信号通道在第一USB Type-C端口13的信号通道、第二USB Type-C端口14的信号通道、以及DP接口15与USB接口16组合形成的信号通道间循环切换。
需要说明的是，标准Type-C信号包含DP视频信号和USB数据，因此，转换模块2连接第一USB Type-C端口13的信号通道、第二USB Type-C端口14的信号通道或DP接口15与USB接口16组合形成的信号通道时，转换模块2会且仅会输出一组DP视频信号和一组USB数据。
具体地，所述扩展坞还包括：
充电端4，配置为连接外部电源，使所述外部电源为扩展坞内部用电模块和输入端口1连接的上行设备供电；
至少一个数据接口5，配置为连接负载，与输入端口1连接的上行设备进行数据交互。
需要说明的是，负载包括但不限于任何一种已知型号的设备，本实施例中以USB设备为例，在一个具体实施例中，负载包括USB设备，数据接口5包括USB接口。
示例性地，扩展坞的输入端口包括一个USB Type-C接口，数据接口包括两个USB接口、SD接口和TF接口，视频端口包括HDMI接口，但并不能理解为对扩展坞中端口种类及数量的限制，可以根据实际生产与应用的需求，调节扩展坞的端口种类和数量。
具体地，请参考图5，转换模块2通过物理层分别与输入端口1及数据接口5连接，以实现输入端口1与数据接口5之间的数据交互。
进一步地，所述扩展坞还包括：
视频模块6，视频模块6与转换模块2信号连接，当转换模块2导通与DP接口的连接时，视频模块6配置为接收DP接口通过转换模块2传送的DP视频信号和/或USB Type-C 接口通过转换模块2转换的DP视频信号，并通过视频模块6连接的HDMI接口17，将接收的DP视频信号转换为标准HDMI高清视频输出；
扩展模块7，扩展模块7与转换模块2、数据接口5信号连接，配置为接收USB接口通过转换模块2传送的USB数据信号和/或USB Type-C接口通过转换模块2转换的USB数据信号，并将一组USB的数据扩展为多组USB数据信号传送至各个数据接口5。
示例性地，图4中示出了扩展模块7将一组USB的数据扩展为二组USB数据信号的情形，但并不能理解为对扩展模块7中将一组USB的数据扩展为数据信号的组数的限制，可以根据扩展坞设计的需求，调节扩展USB数据信号的组数，例如大于二组或者小于二组。
优选地，所述扩展坞还包括变压模块8，所述变压模块8电连接充电端4和/或转换模块2，配置为通过充电端4连接的外部电源和/或输入端口1连接的上行设备为内部用电模块供电，本实施例中，充电端4连接的外部电源和/或输入端口1连接的上行设备通过变压模块8为控制模块、视频模块6和扩展模块7供电。
进一步地，本实施例中控制模块还配置为通过向变压模块8发送信号的方式，使变压模块8将所述外部电源和/或所述上行设备的电压转换为预设电压值的电压，并以所述预设电压值的电压为控制模块、视频模块6和扩展模块7供电。
优选地，所述预设电压值为+5V，所述外部电源和/或所述上行设备的电压范围为+5-20V。
具体地，所述控制模块包括协议模块，所述协议模块设置于充电端4与转换模块2之间，当扩展坞同时与上行设备、外部电源连接时，协议模块通过快充协议控制充电端4连接的外部电源为输入端口1连接的上行设备以超出所述预设电压值的电压进行快充。优选地，所述快充协议包括PD快充协议。
进一步地，所述协议模块还配置为在接通外部电源和/或上行设备，使充电端4连接的外部电源和/或输入端口1连接的上行设备为内部用电模块供电后，通过CC协议对与输入端口1连接的上行设备进行初始化。
具体地，请参考图6，所述变压模块8包括第一芯片Q1和第一MOS管Q2，具体的第一芯片Q1的可选型号有许多，第一芯片Q1包括但不限于任何一种已知型号的芯片，在本实施例中，所述第一芯片Q1的型号为GTD3419；
所述第一MOS管Q2为N型金属氧化物半导体场效应晶体管(NMOS，Negative Channel Metal Oxide Semiconductor)，在使用NMOS管情况下，所述第一MOS管Q2的第一极为漏极D，第二级为源极S。所述第一MOS管Q2的栅极G接收到高电平时，所述第一MOS管Q2处于导通状态；所述第一MOS管Q2的栅极G接收到低电平时，所述第一MOS管Q2处于截止状态。
具体地，第一MOS管Q2的漏极D连接第一芯片Q1，第一MOS管Q2的源极S接地，第一MOS管Q2的源极S与第一MOS管Q2的栅极G间并联有第二电阻R2，第一MOS管Q2的栅极G用于接收PD控制模块发送的信号，即图6中示出的GPIO5信号。
进一步地，第一芯片Q1的第一端连接VBUS_M，第一芯片Q1的第二端连接BUS_5V，第一芯片Q1的第三端连接第一MOS管Q2的漏极D，第一芯片Q1的第一端与第一芯片Q1的第三端间并联有第一电阻R1。
具体地，请参考图7，所述变压电路8还包括第二芯片U1和第二MOS管Q3，具体的第二芯片U1的可选型号有许多，第二芯片U1包括但不限于任何一种已知型号的芯片，在一个具体实施例中，所述第二芯片U1的型号为MT3905；
所述第二MOS管Q3为N型金属氧化物半导体场效应晶体管，在使用NMOS管情况下，所述第二MOS管Q3的第一极为漏极D，第二级为源极S。所述第二MOS管Q3的栅极G接收到高电平时，所述第二MOS管Q3处于导通状态；所述第二MOS管Q3的栅极G接收到低电平时，所述第二MOS管Q3处于截止状态。
具体地，第二MOS管Q3的漏极D连接第二芯片U1，第二MOS管Q3的源极S接地，第二MOS管Q3的栅极G用于接收PD控制模块发送的信号，即图7中示出的GPIO6信号。
进一步地，第二芯片U1的信号输入端VIN连接VBUS_M，第二芯片U1的使能端EN连接第二MOS管Q3的漏极D，第二芯片U1的SW端通过第一电感L1连接BUS_SV；
第二芯片U1的SW端与第二芯片U1的BST端间连接有电容，第二芯片U1的信号输入端VIN和第二芯片U1的使能端EN间并联有第三电阻R3，第二芯片U1的SW端和第二芯片U1的FB端间并联有第四电阻R4，第二芯片U1的FB端通过第五电阻R5接地。
进一步地，所述扩展坞还包括通断模块，通断模块用于接收控制模块发送的通断信号，并根据所述通断信号，导通充电端4与变压模块8之间的供电线路，切断转换模块2与变压模块8之间的供电线路；
或，根据所述通断信号，切断充电端4与变压模块8之间的供电线路，导通转换模块2与变压模块8之间的供电线路。
本实施例中，所述通断模块包括MOS开关9，所述MOS开关9设置于充电端4与变压模块8之间、输入端口1与变压模块8之间，MOS开关9用于根据控制模块发送的信号，切换充电端4与变压模块8的供电线路、输入端口1与变压模块8的供电线路连接，进而确保终端设备的用电安全。
具体地，MOS开关9由控制模块发送的信号切换充电端4与输入端口1的电源通断，当扩展坞未通过充电端4连接外部电源，仅通过输入端口1连接上行设备时，控制模块下达指令使MOS开关9切断充电端4与变压模块8间的供电线路连接，导通输入端口1与变压模块8间的供电线路连接；
当扩展坞通过充电端4连接外部电源，且通过输入端口1连接上行设备时，控制模块下达指令使MOS开关9接通充电端4与变压模块8间的供电线路连接，切断输入端口1与变压模块8间的供电线路连接，以确保终端设备的用电安全。
用户不必插拔连接线，即可在扩展坞连接的多台电脑或手机之间进行切换，减少了因切换设备给用户带来的不便，同时避免了因频繁插拔连接线导致影响到扩展坞的使用寿命。
为实现本申请实施例的方法，本申请应用实施例还提供了一种扩展坞爆炸图和立体示意图，如图8和图9所示，包括有外壳10以及PCBA电路板20。
所述外壳10包括有底壳11、上壳12、端盖13和堵头14，该上壳12与底壳11上下拼合并围构形成一容置腔101，该端盖13封盖住容置腔101的一端开口，该堵头14封盖住容置腔101的另一端开口。
该PCBA电路板20设置于外壳10内，具体是，该PCBA电路板20设置于容置腔101中；该PCBA电路板20上设置有不同类型的数据接口和视频端口，各数据接口和视频端口均外露于外壳10。数据线30的一端与PCBA电路板20导通连接，数据线30的另一端伸出外壳10并与输入端口31连接，并且，所述外壳10的一端面上开设有配置为收纳数据端口31的容置孔102，不使用时，可将数据端口31插入容置孔102中收纳。
该PCBA电路板20上设置有配置为切断数据输出或者切断扩展坞供电的控制开关40，控制开关40外露于外壳10。所述控制开关40包括有开关元器件41和按键42，该开关元器件41设置于PCBA电路板20上并与PCBA电路板20上的线路导通连接，该按键42覆盖在开关元器件41上并外露于外壳10。并且，所述外壳10的表面开设有通孔103，该按键42透过通孔103外露于外壳10的表面。所述PCBA电路板20还设置有指示灯50，该指示灯50位于开关元器件41的侧旁，该按键42为透明按键并盖住指示灯50；并且，所述指示灯50为两个，其均为LED灯，其对称设置于开关元器件41的两侧。
具体地，所述PCBA电路板20上设置的数据接口有USB接口61和SD/TF接口62， 所述USB接口61和SD/TF接口62均外露于外壳10。
详述本实施例的使用方法如下：
使用时，将输入端口31与电脑插接，并将外部显示设备(如投影仪、显示屏等)与对应的视频端口连接，通过指示灯50亮与否，可以让使用者感知扩展坞是否在工作。在使用过程中，通过按压按键42可以切断数据输出，让屏幕黑屏，或者直接切断扩展坞供电，使扩展坞连接电脑的情况下处于关机状态。
通过在PCBA电路板上设置有控制开关，利用控制开关可切断数据输出或者切断扩展坞供电，使得使用者只需操控控制开关即可对数据输出进行快速控制，无需插拔连接器，省时省力，为使用带来了便利。
为实现本申请实施例的方法，本申请实施例还提供了一种控制装置，如图10所示，该控制装置1000包括：
检测模块1001，配置为检测所述投屏设备的第一信号源输入的图像帧，得到检测结果；
控制模块1002，配置为在所述检测结果符合设定条件的情况下，停止输出所述第一信号源的图像帧。
在一实施例中，所述控制模块1002配置为：
当所述第一信号源当前输入的图像帧和设定的白名单中的图像帧不匹配时，停止输出所述第一信号源的图像帧；其中，
所述白名单中设置了允许所述投屏设备输出的图像帧。
在一实施例中，在所述检测所述投屏设备的第一信号源输入的图像帧之前，所述装置还包括：
获取模块，配置为从所述第一信号源获取第一数据；所述第一数据表征需要通过所述投屏设备输出的至少一个图像帧；
生成模块，配置为基于获取到的第一数据，生成所述白名单。
在一实施例中，所述控制模块1002配置为：
当所述第一信号源当前输入的图像帧的特征和设定的黑名单中的特征匹配时，停止输出所述第一信号源的图像帧；其中，
所述黑名单的特征包括以下至少一项：
表征图像帧中出现弹窗的特征；
表征图像帧中出现非法内容的特征。
在一实施例中，所述控制模块1002停止输出所述第一信号源的图像帧，包括以下之一：
输出第二信号源的图像帧；
输出所述投屏设备预存的图像帧；
将所述第一信号源输入的图像帧的亮度调为最低。
在一实施例中，所述控制模块1002在停止输出所述第一信号源的图像帧的同时，还配置为：
屏蔽所述第一信号源输入的音频；
发出提示信号；其中，所述提示信号包括音乐、灯光、提示音中的至少一项。
在一实施例中，所述装置还包括：
第二控制模块，配置为在所述停止输出所述第一信号源的图像帧之后，在所述检测结果不符合设定条件的情况下，或者，在接收到中断信号的情况下，恢复输出所述第一信号源的图像帧。
在一实施例中，所述投屏设备包括视频模块、扩展模块、信号切换模块以及至少一个输入端口；其中，所述视频模块包括至少一个视频接口，所述扩展模块包括至少一个数据接口，所述输入端口用于与上行设备端电连接。
在一实施例中，所述控制模块1002配置为：
当满足第二设定条件时，向信号切换模块发送切换指令；
所述信号切换模块接收到切换指令后，断开所述信号切换模块与所述扩展模块之间的第一信号通道，并连通所述信号切换模块与所述视频模块之间的第二信号通道，以使视频信号能依次通过输入端口、所述信号切换模块与输入端口之间的第三信号通道、所述信号切换模块、所述第二信号通道传输至所述视频模块。
在一实施例中，所述装置还包括：
第一判定模块，配置为判断数据接口是否处于闲置状态；当数据接口处于闲置状态时，则判定为满足所述第二设定条件；所述数据接口表征与第一信号通道连通的数据接口。
在一实施例中，所述扩展模块还包括至少一个网络接口，所述装置还包括：
第二判定模块，配置为判断网络接口是否处于闲置状态；当网络接口处于闲置状态时，则判定为满足所述第二设定条件；所述网络接口表征与第一信号通道连通的网络接口。
在一实施例中，所述装置还包括：
第三判定模块，配置为当所述投屏设备接收到设定的第一按键指令时，则判定为满足第二设定条件；
发送模块，配置为当所述投屏设备接收到设定的第二按键指令时，向所述信号切换模块发送复位指令；
所述信号切换模块接收到复位指令后，断开所述第二信号通道，并连通所述第一信号通道，以使数据信号能依次通过输入端口、所述第三信号通道、所述信号切换模块、所述第一信号通道传输至所述扩展模块。
在一实施例中，所述投屏设备具有至少二个输入端口，所述装置还包括：
第二检测模块，配置为检测是否接收到变更信号；所述变更信号表征输入所述第一信号源的端口由第一输入端口变更为第二输入端口；
第三控制模块，配置为若接收到所述变更信号，则根据所述变更信号生成控制信号，并根据所述控制信号切断与第一输入端口的连接，以及导通与第二输入端口的连接。
在一实施例中，输入端口至少包括一个通用串行总线C类型接口USB Type-C、一个显示接口DP和一个USB接口。
在一实施例中，所述装置还包括：
输出模块，配置为将从所述USB Type-C接口输入的数据转换为USB数据信号和DP视频信号，使所述USB数据信号通过扩展模块输出、所述DP视频信号通过视频模块输出；
或，将从所述USB接口输入的USB数据信号通过所述扩展模块输出，将从所述DP接口输入的DP视频信号通过所述视频模块输出。
在一实施例中，所述装置还包括：
第四控制模块，配置为当所述投屏设备同时连接外部电源和上行设备时，控制所述外部电源为所述上行设备供电；
当所述投屏设备仅连接所述上行设备时，控制所述上行设备为所述投屏设备供电。
在一实施例中，所述装置还包括：
初始化模块，配置为通过知识共享许可协议CC对所述上行设备进行初始化。
实际应用时，所述检测模块、控制模块、获取模块、生成模块、第二控制模块、第一判定模块、第二判定模块、第三判定模块、发送模块、第二检测模块、第三控制模块、输出模块、第四控制模块、初始化模块可通过装置中的处理器，比如中央处理器(CPU，Central Processing Unit)、数字信号处理器(DSP，Digital Signal Processor)、微控制单元(MCU，Microcontroller Unit)或可编程门阵列(FPGA，Field－Programmable Gate Array)等实现。
需要说明的是：上述实施例提供的装置在进行控制时，仅以上述各程序模块的划分进行举例说明，实际应用中，可以根据需要而将上述处理分配由不同的程序模块完成，即将 装置的内部结构划分成不同的程序模块，以完成以上描述的全部或者部分处理。另外，上述实施例提供的装置与控制方法实施例属于同一构思，其具体实现过程详见方法实施例，这里不再赘述。
基于上述程序模块的硬件实现，且为了实现本申请实施例的方法，本申请实施例还提供了一种投屏设备。图11本申请实施例投屏设备的硬件组成结构示意图，如图11所示，投屏设备包括：
通信接口1101，能够与其它设备比如网络设备等进行信息交互；
处理器1102，与所述通信接口1101连接，以实现与其它设备进行信息交互，用于运行计算机程序时，执行上述电子设备侧一个或多个技术方案提供的方法。而所述计算机程序存储在存储器1103上。
具体地，通信接口1101，配置为检测所述投屏设备的第一信号源输入的图像帧，得到检测结果；
以及配置为在所述检测结果符合设定条件的情况下，停止输出所述第一信号源的图像帧。
其中，在一实施例中，所述通信接口1101，配置为：
当所述第一信号源当前输入的图像帧和设定的白名单中的图像帧不匹配时，停止输出所述第一信号源的图像帧；其中，
所述白名单中设置了允许所述投屏设备输出的图像帧。
在一实施例中，所述通信接口1101，配置为：
在所述检测所述投屏设备的第一信号源输入的图像帧之前，从所述第一信号源获取第一数据；所述第一数据表征需要通过所述投屏设备输出的至少一个图像帧；
所述处理器1102，配置为：
基于获取到的第一数据，生成所述白名单。
在一实施例中，所述通信接口1101，配置为：
当所述第一信号源当前输入的图像帧的特征和设定的黑名单中的特征匹配时，停止输出所述第一信号源的图像帧；其中，
所述黑名单的特征包括以下至少一项：
表征图像帧中出现弹窗的特征；
表征图像帧中出现非法内容的特征。
在一实施例中，所述通信接口1101停止输出所述第一信号源的图像帧，包括以下之一：
输出第二信号源的图像帧；
输出所述投屏设备预存的图像帧；
将所述第一信号源输入的图像帧的亮度调为最低。
在一实施例中，所述通信接口1101所述停止输出所述第一信号源的图像帧的同时，还配置为：
屏蔽所述第一信号源输入的音频；
发出提示信号；其中，所述提示信号包括音乐、灯光、提示音中的至少一项。
在一实施例中，所述通信接口1101，还配置为：
在所述检测结果不符合设定条件的情况下，或者，在接收到中断信号的情况下，恢复输出所述第一信号源的图像帧。
在一实施例中，所述投屏设备还包括视频模块、扩展模块、信号切换模块以及至少一个输入端口；其中，所述视频模块包括至少一个视频接口，所述扩展模块包括至少一个数据接口，所述输入端口用于与上行设备端电连接。
在一实施例中，所述处理器1102，配置为：
当满足第二设定条件时，向信号切换模块发送切换指令；
所述信号切换模块接收到切换指令后，断开所述信号切换模块与所述扩展模块之间的第一信号通道，并连通所述信号切换模块与所述视频模块之间的第二信号通道，以使视频信号能依次通过输入端口、所述信号切换模块与输入端口之间的第三信号通道、所述信号切换模块、所述第二信号通道传输至所述视频模块。
在一实施例中，所述通信接口1101，还配置为：
判断数据接口是否处于闲置状态；所述数据接口表征与第一信号通道连通的数据接口；
所述处理器1102，还配置为：
当数据接口处于闲置状态时，则判定为满足所述第二设定条件。
在一实施例中，所述通信接口1101，还配置为：
判断网络接口是否处于闲置状态；所述网络接口表征与第一信号通道连通的网络接口；
所述处理器1102，还配置为：
当网络接口处于闲置状态时，则判定为满足所述第二设定条件。
在一实施例中，所述处理器1102，还配置为：
当所述投屏设备接收到设定的第一按键指令时，则判定为满足第二设定条件；
当所述投屏设备接收到设定的第二按键指令时，向所述信号切换模块发送复位指令；
所述信号切换模块接收到复位指令后，断开所述第二信号通道，并连通所述第一信号通道，以使数据信号能依次通过输入端口、所述第三信号通道、所述信号切换模块、所述第一信号通道传输至所述扩展模块。
在一实施例中，所述投屏设备具有至少二个输入端口，所述通信接口1101，还配置为：
检测是否接收到变更信号；所述变更信号表征输入所述第一信号源的端口由第一输入端口变更为第二输入端口；
所述处理器1102，还配置为：
若接收到所述变更信号，则根据所述变更信号生成控制信号，并根据所述控制信号切断与第一输入端口的连接，以及导通与第二输入端口的连接。
在一实施例中，输入端口至少包括一个通用串行总线C类型接口USB Type-C、一个显示接口DP和一个USB接口。
在一实施例中，所述处理器1102，还配置为：
将从所述USB Type-C接口输入的数据转换为USB数据信号和DP视频信号，使所述USB数据信号通过扩展模块输出、所述DP视频信号通过视频模块输出；
或，将从所述USB接口输入的USB数据信号通过所述扩展模块输出，将从所述DP接口输入的DP视频信号通过所述视频模块输出。
在一实施例中，所述处理器1102，还配置为：
当所述投屏设备同时连接外部电源和上行设备时，控制所述外部电源为所述上行设备供电；
当所述投屏设备仅连接所述上行设备时，控制所述上行设备为所述投屏设备供电。
在一实施例中，所述处理器1102，还配置为：
通过知识共享许可协议CC对所述上行设备进行初始化。
需要说明的是：处理器1102和通信接口1101的具体处理过程可参照上述方法理解。
当然，实际应用时，投屏设备中的各个组件通过总线系统1104耦合在一起。可理解，总线系统1104用于实现这些组件之间的连接通信。总线系统1104除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图11中将各种总线都标为总线系统1104。
本申请实施例中的存储器1103用于存储各种类型的数据以支持投屏设备的操作。这 些数据的示例包括：用于在投屏设备上操作的任何计算机程序。
上述本申请实施例揭示的方法可以应用于所述处理器1102中，或者由所述处理器1102实现。所述处理器1102可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过所述处理器1102中的硬件的集成逻辑电路或者软件形式的指令完成。上述的所述处理器1102可以是通用处理器、数字信号处理器(DSP，Digital Signal Processor)，或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。所述处理器1102可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤，可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于存储介质中，该存储介质位于存储器1103，所述处理器1102读取存储器1103中的信息，结合其硬件完成前述方法的步骤。
在示例性实施例中，扩展坞可以被一个或多个应用专用集成电路(ASIC，Application Specific Integrated Circuit)、DSP、可编程逻辑器件(PLD，Programmable Logic Device)、复杂可编程逻辑器件(CPLD，Complex Programmable Logic Device)、现场可编程门阵列(FPGA，Field-Programmable Gate Array)、通用处理器、控制器、微控制器(MCU，Micro Controller Unit)、微处理器(Microprocessor)、或者其他电子元件实现，用于执行前述方法。
可以理解，存储器1103可以是易失性存储器或非易失性存储器，也可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(ROM，Read Only Memory)、可编程只读存储器(PROM，Programmable Read-Only Memory)、可擦除可编程只读存储器(EPROM，Erasable Programmable Read-Only Memory)、电可擦除可编程只读存储器(EEPROM，Electrically Erasable Programmable Read-Only Memory)、磁性随机存取存储器(FRAM，ferromagnetic random access memory)、快闪存储器(Flash Memory)、磁表面存储器、光盘、或只读光盘(CD-ROM，Compact Disc Read-Only Memory)；磁表面存储器可以是磁盘存储器或磁带存储器。易失性存储器可以是随机存取存储器(RAM，Random Access Memory)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(SRAM，Static Random Access Memory)、同步静态随机存取存储器(SSRAM，Synchronous Static Random Access Memory)、动态随机存取存储器(DRAM，Dynamic Random Access Memory)、同步动态随机存取存储器(SDRAM，Synchronous Dynamic Random Access Memory)、双倍数据速率同步动态随机存取存储器(DDRSDRAM，Double Data Rate Synchronous Dynamic Random Access Memory)、增强型同步动态随机存取存储器(ESDRAM，Enhanced Synchronous Dynamic Random Access Memory)、同步连接动态随机存取存储器(SLDRAM，SyncLink Dynamic Random Access Memory)、直接内存总线随机存取存储器(DRRAM，Direct Rambus Random Access Memory)。本申请实施例描述的存储器1103旨在包括但不限于这些和任意其它适合类型的存储器。
上述本申请实施例揭示的方法可以应用于处理器1102中，或者由处理器1102实现。处理器1102可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器1102中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器1102可以是通用处理器、DSP，或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。处理器1102可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤，可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于存储介质中，该存储介质位于存储器1103，处理器1102读取存储器1103中的程序，结合其硬件完成前述方法的步骤。
可选地，所述处理器1102执行所述程序时实现本申请实施例的各个方法中由扩展坞实 现的相应流程，为了简洁，在此不再赘述。
在示例性实施例中，本申请实施例还提供了一种存储介质，即计算机存储介质，具体为计算机可读存储介质，例如包括存储计算机程序的存储器1103，上述计算机程序可由投屏设备的处理器1102执行，以完成前述方法所述步骤。计算机可读存储介质可以是FRAM、ROM、PROM、EPROM、EEPROM、Flash Memory、磁表面存储器、光盘、或CD-ROM等存储器。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置、投屏设备和方法，可以通过其它的方式实现。以上所描述的设备实施例仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，如：多个单元或组件可以结合，或可以集成到另一个系统，或一些特征可以忽略，或不执行。另外，所显示或讨论的各组成部分相互之间的耦合、或直接耦合、或通信连接可以是通过一些接口，设备或单元的间接耦合或通信连接，可以是电性的、机械的或其它形式的。
上述作为分离部件说明的单元可以是、或也可以不是物理上分开的，作为单元显示的部件可以是、或也可以不是物理单元，即可以位于一个地方，也可以分布到多个网络单元上；可以根据实际的需要选择其中的部分或全部单元来实现本实施例方案的目的。
另外，在本申请各实施例中的各功能单元可以全部集成在一个处理单元中，也可以是各单元分别单独作为一个单元，也可以两个或两个以上单元集成在一个单元中；上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
本领域普通技术人员可以理解：实现上述方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成，前述的程序可以存储于一计算机可读取存储介质中，该程序在执行时，执行包括上述方法实施例的步骤；而前述的存储介质包括：移动存储设备、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
或者，本申请上述集成的单元如果以软件功能模块的形式实现并作为独立的产品销售或使用时，也可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请实施例的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机、服务器、或者网络设备等)执行本申请各个实施例所述方法的全部或部分。而前述的存储介质包括：移动存储设备、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
需要说明的是，本申请实施例所记载的技术方案之间，在不冲突的情况下，可以任意组合。
另外，在本申请实施例中，“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (20)

  1. 一种控制方法，应用于投屏设备，所述方法包括：
    检测所述投屏设备的第一信号源输入的图像帧，得到检测结果；
    在所述检测结果符合第一设定条件的情况下，停止输出所述第一信号源的图像帧。
  2. 根据权利要求1所述的控制方法，其中，所述在所述检测结果符合第一设定条件的情况下，停止输出所述第一信号源的图像帧，包括：
    当所述第一信号源当前输入的图像帧和设定的白名单中的图像帧不匹配时，停止输出所述第一信号源的图像帧；其中，
    所述白名单中设置了允许所述投屏设备输出的图像帧。
  3. 根据权利要求2所述的控制方法，其中，在所述检测所述投屏设备的第一信号源输入的图像帧之前，所述方法还包括：
    从所述第一信号源获取第一数据；所述第一数据表征需要通过所述投屏设备输出的至少一个图像帧；
    基于获取到的第一数据，生成所述白名单。
  4. 根据权利要求1所述的控制方法，其中，所述在所述检测结果符合第一设定条件的情况下，停止输出所述第一信号源的图像帧，包括：
    当所述第一信号源当前输入的图像帧的特征和设定的黑名单中的特征匹配时，停止输出所述第一信号源的图像帧；其中，
    所述黑名单的特征包括以下至少一项：
    表征图像帧中出现弹窗的特征；
    表征图像帧中出现非法内容的特征。
  5. 根据权利要求1所述的控制方法，其中，所述停止输出所述第一信号源的图像帧，包括以下之一：
    输出第二信号源的图像帧；
    输出所述投屏设备预存的图像帧；
    将所述第一信号源输入的图像帧的亮度调为最低。
  6. 根据权利要求1所述的控制方法，其中，在所述停止输出所述第一信号源的图像帧的同时，所述方法还包括以下至少之一：
    屏蔽所述第一信号源输入的音频；
    发出提示信号；其中，所述提示信号包括音乐、灯光、提示音中的至少一项。
  7. 根据权利要求1所述的控制方法，其中，在所述停止输出所述第一信号源的图像帧之后，所述方法还包括：
    在所述检测结果不符合所述第一设定条件的情况下，或者，在接收到中断信号的情况下，恢复输出所述第一信号源的图像帧。
  8. 根据权利要求1所述的控制方法，其中，所述投屏设备包括视频模块、扩展模块、信号切换模块以及至少一个输入端口；其中，所述视频模块包括至少一个视频端口，所述扩展模块包括至少一个数据接口，输入端口用于与上行设备端电连接。
  9. 根据权利要求8所述的控制方法，其中，所述投屏设备输出所述第一信号源的图像帧，包括：
    当满足第二设定条件时，向信号切换模块发送切换指令；
    所述信号切换模块接收到切换指令后，断开所述信号切换模块与所述扩展模块之间的第一信号通道，并连通所述信号切换模块与所述视频模块之间的第二信号通道，以使视频信号能依次通过输入端口、所述信号切换模块与输入端口之间的第三信号通道、所述信号切换模块、所述第二信号通道传输至所述视频模块。
  10. 根据权利要求9所述的控制方法，其中，所述方法还包括：
    判断数据接口是否处于闲置状态；所述数据接口表征与第一信号通道连通的数据接口；
    当数据接口处于闲置状态时，则判定为满足所述第二设定条件。
  11. 根据权利要求9所述的控制方法，其中，所述扩展模块还包括至少一个网络接口，所述方法还包括：
    判断网络接口是否处于闲置状态；所述网络接口表征与第一信号通道连通的网络接口；
    当网络接口处于闲置状态时，则判定为满足所述第二设定条件。
  12. 根据权利要求9所述的控制方法，其中，所述方法还包括：
    当所述投屏设备接收到设定的第一按键指令时，则判定为满足第二设定条件；
    当所述投屏设备接收到设定的第二按键指令时，向所述信号切换模块发送复位指令；
    所述信号切换模块接收到复位指令后，断开所述第二信号通道，并连通所述第一信号通道，以使数据信号能依次通过输入端口、所述第三信号通道、所述信号切换模块、所述第一信号通道传输至所述扩展模块。
  13. 根据权利要求1所述的控制方法，其中，所述投屏设备具有至少二个输入端口，所述方法还包括：
    检测是否接收到变更信号；所述变更信号表征输入所述第一信号源的端口由第一输入端口变更为第二输入端口；
    若接收到所述变更信号，则根据所述变更信号生成控制信号，并根据所述控制信号切断与第一输入端口的连接，以及导通与第二输入端口的连接。
  14. 根据权利要求13所述的控制方法，其中，输入端口至少包括一个通用串行总线C类型接口USB Type-C、一个显示接口DP和一个USB接口。
  15. 根据权利要求14所述的控制方法，其中，所述方法还包括：
    将从所述USB Type-C接口输入的数据转换为USB数据信号和DP视频信号，使所述USB数据信号通过扩展模块输出、所述DP视频信号通过视频模块输出；
    或，将从所述USB接口输入的USB数据信号通过所述扩展模块输出，将从所述DP接口输入的DP视频信号通过所述视频模块输出。
  16. 根据权利要求1所述的控制方法，其中，所述方法还包括：
    当所述投屏设备同时连接外部电源和上行设备时，控制所述外部电源为所述上行设备供电；
    当所述投屏设备仅连接所述上行设备时，控制所述上行设备为所述投屏设备供电。
  17. 根据权利要求16所述的控制方法，其中，所述方法还包括：
    通过知识共享许可协议CC对所述上行设备进行初始化。
  18. 一种控制装置，所述装置包括：
    检测模块，配置为检测所述投屏设备的第一信号源输入的图像帧，得到检测结果；
    控制模块，配置为在所述检测结果符合第一设定条件的情况下，停止输出所述第一信号源的图像帧。
  19. 一种投屏设备，所述投屏设备包括：存储器、处理器，所述存储器存储有可在处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现上述权利要求1至17中任一项提供的控制方法。
  20. 一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机可执行指令，该计算机可执行指令配置为执行上述权利要求1至17中任一项提供的控制方法。
PCT/CN2022/134891 2021-12-27 2022-11-29 控制方法、装置、投屏设备及存储介质 WO2023124699A1 (zh)

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CN113282962A (zh) * 2021-07-26 2021-08-20 深圳传音控股股份有限公司 处理方法、处理设备及存储介质
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