WO2023230765A1 - Procédé et système de synchronisation d'informations d'écran - Google Patents

Procédé et système de synchronisation d'informations d'écran Download PDF

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Publication number
WO2023230765A1
WO2023230765A1 PCT/CN2022/095979 CN2022095979W WO2023230765A1 WO 2023230765 A1 WO2023230765 A1 WO 2023230765A1 CN 2022095979 W CN2022095979 W CN 2022095979W WO 2023230765 A1 WO2023230765 A1 WO 2023230765A1
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WIPO (PCT)
Prior art keywords
display device
description information
target
display
media file
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PCT/CN2022/095979
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English (en)
Chinese (zh)
Inventor
冯峰
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京东方科技集团股份有限公司
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to PCT/CN2022/095979 priority Critical patent/WO2023230765A1/fr
Priority to CN202280001573.9A priority patent/CN117480487A/zh
Publication of WO2023230765A1 publication Critical patent/WO2023230765A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/10—File systems; File servers
    • G06F16/17—Details of further file system functions
    • G06F16/178—Techniques for file synchronisation in file systems
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units

Definitions

  • the present disclosure relates to the field of display technology, and in particular, to a screen information synchronization method and system.
  • Some scenarios require the use of two or more display devices together. In this case, the content of different display devices needs to be shared and cross-device operations are required. In related technologies, multiple display devices are connected through hardware, but additional hardware devices are required and physical wiring is required, which results in relatively high implementation costs.
  • the technical problem to be solved by this disclosure is to provide a screen information synchronization method and system, which can easily realize the cooperation of multiple display devices.
  • a screen information synchronization system including a first display device and a second display device, and the first display device and the first display device are communicatively connected,
  • the second display device is configured to send description information of the target event to the first display device
  • the first display device is configured to receive the description information of the target event sent by the second display device, and perform a synchronization operation according to the description information.
  • the first display device is connected to the second display device through wireless communication.
  • the first display device is further configured to send a subscription request to the second display device, indicating to obtain the description information of the target event;
  • the second display device is also configured to receive the subscription request.
  • the second display device is further configured to send a list of target events to the first display device, where the list of target events includes an identification of at least one target event;
  • the first display device is also configured to receive the list.
  • the description information of the target event includes at least one of the following:
  • the source display device indicates the sender of the description information
  • the target display device indicates the recipient of the description information
  • the display description information includes data type and data priority
  • the first display device is used to arrange the description information according to data type, obtain multiple data queues, and sort the multiple data queues according to the priority of the data type; in each of the data queues , sort the description information according to the priority of data; perform synchronization operations according to the description information in the order of the description information in the data queue.
  • the target event includes a user triggering a click operation on an application icon of the first display device
  • the second display device is specifically configured to display the application icon of the first display device on a display interface, receive a user's click operation instruction for the application icon, generate the description information according to the click operation instruction, and convert the The description information is sent to the first display device;
  • the first display device is specifically configured to open an interface of an application corresponding to the application icon according to the description information;
  • the first display device is also configured to feed back the status information of the application to the second display device;
  • the second display device is further configured to mark the application icon as opened according to the status information.
  • the target event includes a user triggering an input operation on the second display device, and the description information of the target event includes the content input by the input operation;
  • the second display device is specifically configured to display the content input by the input operation on its own display interface, generate the description information according to the input content, and send the description information to the first display device;
  • the first display device is specifically configured to receive the description information and synchronously display the content input by the input operation on its own display interface.
  • the content input by the input operation is the user's handwriting.
  • the target event includes the user triggering a playback operation on the first target media file of the first display device
  • the second display device is specifically configured to display the first target media file on a display interface, receive a user's playback operation instruction for the first target media file, and update the first target media file according to the playback operation instruction.
  • the playback status of the first target media file is used to generate the description information according to the playback status of the first target media file;
  • the first display device is specifically configured to control the playback state of the first target media file according to the description information.
  • the target event includes a user triggering a playback operation on a second target media file.
  • the second target media file is split into multiple sub-target media files, and different sub-target media files include media in different sub-picture areas. Data, multiple sub-picture areas are spliced into a completed display screen,
  • the second display device is specifically configured to play a second sub-target media file among the plurality of sub-target media files, receive a user's playback operation instruction for the second sub-target media file, and update the playback operation instruction according to the playback operation instruction.
  • the playback status of the second sub-target media file is generated according to the playback status of the second sub-target media file;
  • the first display device is specifically configured to play a first sub-target media file among the plurality of sub-target media files, and control the play status of the first sub-target media file according to the description information.
  • the size of the sub-picture display area of the sub-target media file corresponding to each display device is proportional to the size of the display screen of the display device.
  • the display device set composed of the first display device and the second display device includes a master display device and at least one slave display device, and the master display device communicates with the network and the slave display device through wireless communication.
  • the display device is communicatively connected, and the slave display device is communicatively connected with the master display device through wireless communication.
  • the screen information synchronization system is a blackboard system.
  • Embodiments of the present disclosure also provide a screen information synchronization method, which is applied to the screen information synchronization system as described above.
  • the method includes:
  • the second display device sends description information of the target event to the first display device
  • the first display device receives the description information of the target event sent by the second display device, and performs a synchronization operation according to the description information.
  • the method further includes:
  • the first display device sends a subscription request to the second display device, indicating to obtain the description information of the target event;
  • the second display device receives the subscription request.
  • the method further includes:
  • the second display device sends a list of target events to the first display device, where the list of target events includes an identification of at least one target event;
  • the first display device receives the list.
  • the description information of the target event includes at least one of the following:
  • the source display device indicates the sender of the description information
  • the target display device indicates the recipient of the description information
  • the display description information includes data type and data priority
  • the method further includes:
  • the first display device arranges the description information according to data type to obtain multiple data queues, and sorts the multiple data queues according to the priority of the data type; in each of the data queues, according to The description information is sorted by the priority of the data; a synchronization operation is performed according to the description information in the order of the description information in the data queue.
  • the target event includes the user triggering a click operation on the application icon of the first display device, and the method specifically includes:
  • the second display device displays the application icon of the first display device on the display interface, receives the user's click operation instruction for the application icon, generates the description information according to the click operation instruction, and sends the description information to the first display device;
  • the first display device opens an interface of the application corresponding to the application icon according to the description information
  • the method also includes:
  • the first display device feeds back the status information of the application to the second display device;
  • the second display device marks the application icon as opened according to the status information.
  • the target event includes a user triggering an input operation on the second display device, and the description information of the target event includes the content input by the input operation; the method specifically includes:
  • the second display device displays the content input by the input operation on its own display interface, generates the description information based on the input content, and sends the description information to the first display device;
  • the first display device receives the description information and synchronously displays the content input by the input operation on its own display interface.
  • the target event includes the user triggering a play operation on the first target media file of the first display device, and the method specifically includes:
  • the second display device displays the first target media file on a display interface, receives a user's playback operation instruction for the first target media file, and updates the playback status of the first target media file according to the playback operation instruction. , generate the description information according to the playback status of the first target media file;
  • the first display device controls the playback state of the first target media file according to the description information.
  • the target event includes a user triggering a playback operation on a second target media file.
  • the second target media file is split into multiple sub-target media files, and different sub-target media files include media in different sub-picture areas. Data, multiple sub-picture areas are spliced into a completed display picture, and the method specifically includes:
  • the second display device plays a second sub-target media file among the plurality of sub-target media files, receives a user's playback operation instruction for the second sub-target media file, and updates the second sub-target media file according to the playback operation instruction.
  • the playback status of the sub-target media file generating the description information according to the playback status of the second sub-target media file;
  • the first display device plays a first sub-target media file among the plurality of sub-target media files, and controls the play status of the first sub-target media file according to the description information.
  • An embodiment of the present disclosure also provides a display device, including a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor. When the program or instructions are executed by the processor, the above is implemented. The steps of the screen information synchronization method.
  • Embodiments of the present disclosure also provide a readable storage medium on which programs or instructions are stored. When the programs or instructions are executed by a processor, the steps of the screen information synchronization method as described above are implemented.
  • the second display device can synchronize the description information of the target event to the first display device, and the first display device can perform corresponding operations according to the description information of the target event, so that multiple display devices Collaboration can be achieved between them, including but not limited to application synchronization, collaborative control, and joint playback of media files.
  • Figure 1 is a schematic structural diagram of a screen information synchronization system according to an embodiment of the present disclosure
  • Figure 2 is a schematic diagram of the connection between the master display device and the slave display device according to the embodiment of the present disclosure
  • Figure 3 is a schematic diagram of multiple display screens spliced according to an embodiment of the present disclosure
  • Figure 4 is a schematic diagram of multiple data queues according to an embodiment of the present disclosure.
  • Figure 5 is a schematic diagram of a first display device displaying an application icon of a second display device according to an embodiment of the present disclosure
  • Figure 6 is a schematic diagram of a first display device and a second display device synchronously displaying user input content according to an embodiment of the present disclosure
  • Figure 7 is a schematic diagram of the first display device controlling the playback progress of the target media file on the second display device side according to an embodiment of the present disclosure
  • Figure 8 is a schematic diagram of multiple display screens playing target media files according to an embodiment of the present disclosure.
  • Figure 9 is a schematic flowchart of a screen information synchronization method according to an embodiment of the present disclosure.
  • Figure 10 is a schematic diagram of the composition of a screen information synchronization device according to an embodiment of the present disclosure.
  • Embodiments of the present disclosure provide a screen information synchronization method and system, which can facilitate cooperation between multiple display devices.
  • Embodiments of the present disclosure provide a screen information synchronization system, as shown in Figure 1, including a first display device 11 and a second display device 12.
  • the first display device 11 and the first display device 12 are communicatively connected.
  • the second display device 12 is configured to send the description information of the target event to the first display device 11;
  • the first display device 11 is configured to receive the description information of the target event sent by the second display device 12 and perform a synchronization operation according to the description information.
  • the second display device can synchronize the description information of the target event to the first display device, and the first display device can perform corresponding operations according to the description information of the target event, so that multiple Collaboration can be achieved between display devices, including but not limited to application synchronization, collaborative control, and joint playback of media files.
  • the first display device and the second display device are connected through wireless communication without the need to connect through hardware interfaces and physical wiring, which does not increase the hardware cost, and this embodiment does not require the first display device and the second display device to be connected.
  • this embodiment does not require the first display device and the second display device to be connected.
  • the first display device and the second display device cooperate together.
  • the first display device and the second display device are electronic devices with display screens, including but not limited to mobile phones (such as Android mobile phones, iOS mobile phones, etc.), Laptops, tablets, handheld computers, MID (Mobile Internet Devices, mobile Internet devices), PAD, desktop computers, smart TVs, smart blackboards, etc.
  • Wireless communication includes: Bluetooth, WIFI and other technologies that implement wireless communication.
  • the first display device and the second display device can be connected through WIFI.
  • the "first" in the first display device and the “second” in the second display device are only to distinguish the display devices.
  • the first display device it is the first display device, and other display devices
  • the device is a second display device.
  • the first display device and the second display device form a display device set.
  • a master display device can be set as the main controlled display device, and other display devices can be set as slave display devices.
  • the master display device can be the first display device. device, or it can be a second display device.
  • a display device can be agreed upon in advance as the main display device, or a display device can be re-selected as the main display device later based on the actual application.
  • the master display device can communicate with the network and the slave display device through wireless communication, and the slave display device can communicate with the master display device through wireless communication.
  • the master display device When the master display device is connected to the slave display device and the network through WIFI, the master display device works in station (STA, station) mode, and the slave display device works in access point (AP, Access Point) mode. All display devices are connected via WIFI, without the need for additional hardware interfaces and cables. And even if the WIFI connection is occupied between display devices, it will not affect the connection between the main display device and the network.
  • STA station
  • AP Access Point
  • the master display device has a primary display screen
  • the slave display device has a secondary display screen.
  • the primary display screen and the secondary display screen can be displayed independently, and can display the same content or different content, such as the secondary display
  • the main display screen displays the user's writing, and the main display screen displays the displayed PPT or video; or both the main display screen and the secondary display screen display the user's handwriting; or the main display screen and the secondary display screen play media files simultaneously; or the main display screen
  • the main screen and secondary display screen are spliced to display a complete picture.
  • the second display device is also used to broadcast the list of target events to be synchronized or collaborated to the first display device, or to send it to a specific first display device.
  • the first display device may receive a list of target events to be synchronized or collaborated sent or broadcast by the second display device, where the list of target events includes an identification of at least one target event.
  • the first display device can subscribe to the required target events, send a subscription request to the second display device, indicating to obtain the description information of the target event, and the second display device is also used to receive all the target events. Describe the subscription request, so that after the target event is triggered, the second display device will send the description information of the target event to the first display device.
  • the first display device is also used to send a list of target events to the second display device.
  • the list of target events includes the identification of at least one target event. It can also receive a subscription request from the second display device and trigger the target event. After the event, the first display device will send the description information of the target event to the first display device.
  • the operations performed by the second display device will also be performed by the first display device.
  • the first display device generates description information of the target event and sends the description information to the second display device for other second display devices.
  • the device performs corresponding operations based on the description information.
  • this embodiment takes the first display device or the second display device as an example to introduce the operations that the display device needs to perform.
  • the operations performed by the first display device can also be performed by the second display device.
  • Execution, the operation performed by the second display device can also be performed by the first display device.
  • the description information of the target event may be sent between the first display device and the second display device in a broadcast manner, or in an end-to-end manner.
  • the description information of the target event includes at least one of the following:
  • the source display device indicates the sender of the description information, that is, which display device sends the description information of the target event;
  • the target display device indicates the recipient of the description information, that is, the display device to which the description information of the target event is sent;
  • Data type data types include but are not limited to four types: File, Event, Notify, and Object;
  • Data length the length of the data payload
  • the description information of the target event may include one item of the above information, or may include several items of the above information.
  • the first display device will receive the description information of the target event. , to determine whether it is a target display device. If it is not a target display device, the description information of the target event can be ignored; if it is a target display device, the corresponding synchronization operation is performed based on the description information of the target event.
  • the display description information includes data type and data priority; the first display device is used to arrange the description information according to the data type to obtain multiple data queues, and arrange the description information according to the priority of the data type. Sorting the plurality of data queues; in each data queue, sorting the description information according to the priority of data; according to the order of the description information in the data queue, according to the description information Perform synchronization operations.
  • the data types include File, Event, Notify, and Object
  • four data queues are maintained on each display device side: File queue, Event queue, Notify queue, and Object queue. If receiving The data type of the description information of the target event received is File queue, then the description information of the target event is stored in the File queue; if the data type of the description information of the target event received is Event queue, the description information of the target event is stored in the File queue. Stored in the Event queue; if the data type of the description information of the received target event is Notify queue, then the description information of the target event is stored in the Notify queue; if the data type of the description information of the received target event is Object queue , the description information of the target event is stored in the Object queue.
  • Each data queue adopts a first-in, first-out method.
  • Each data queue has a different priority.
  • the priority value can be configured for each data queue, such as in the priority The larger the value, the higher the priority.
  • the priority of the Object queue is higher than the priority of the Event queue
  • the priority of the Event queue is higher than the priority of the Notify queue
  • the priority of the Notify queue is higher than the priority of the File queue. priority.
  • each data queue there may be description information for multiple target events.
  • the description information for multiple target events will also be processed according to the priority. For example, in the Object queue, high-level data will be processed first. Priority data, if the data have the same priority, the data will be processed in a first-in, first-out manner. Through priority policy scheduling, data called by certain emergency programs can be processed first, and some file transfer data can be processed with low priority to meet user needs and improve user experience.
  • the target events include but are not limited to the user triggering a click operation on the application icon of the display device (including the first display device and the second display device), the user triggering an input operation on the display device, and the user triggering an input operation on the display device.
  • the display devices in the display device collection collaborate to achieve application synchronization, collaborative control, and/or media playback.
  • the target event includes a user triggering a click operation on an application icon of the first display device
  • the second display device is specifically configured to display the application icon of the first display device on a display interface, receive a user's click operation instruction for the application icon, generate the description information according to the click operation instruction, and convert the The description information is sent to the first display device;
  • the first display device is specifically configured to open an interface of an application corresponding to the application icon according to the description information;
  • the first display device is also configured to feed back the status information of the application to the second display device;
  • the second display device is further configured to mark the application icon as opened according to the status information.
  • the second display device can read all applications of the first display device, and can display the application icons of the first display device on its own display interface.
  • the second display device can delineate the application icons on the display interface. Part of the area, such as the area circled in the dotted box, displays the application icon of the first display device to distinguish it from the application icon of the second display device itself; of course, the second display device can also use the application icon in all areas of the display interface. to display the application icon of the first display device.
  • the second display device may be a master display device
  • the first display device may be a slave display device.
  • the communication between the first display device and the second display device adopts the data type of Object and is transmitted in the form of a list.
  • the second display device obtains the list, it displays it as a general icon on the list specifically for the first display device.
  • application icons 1, 2, 3, 4, 5 and 6 of the first display device are displayed on the display interface of the second display device.
  • the click operation instruction of the icon generates description information according to the click operation instruction, and notifies the first display device of the description information.
  • the description information indicates that the corresponding application needs to be opened.
  • the first display device opens the application corresponding to the application icon. interface, and can feed back a status to the second display device in the form of a notification message.
  • the second display device marks the application icon as open, or the second display device can directly receive the user's
  • the click operation instruction of the application icon is executed, the corresponding application icon is marked as opened.
  • the second display device can send the description information of the target event to other display devices to achieve application synchronization between display devices.
  • the second display device can display application icons of multiple first display devices.
  • the second display device communicates with N first display devices, and the display interface of the second display device can be divided into N display areas.
  • the application icon of the first first display device is displayed in the first display area
  • the application icon of the second first display device is displayed in the second display area
  • N is an integer greater than or equal to 2.
  • the application icons of one or more first display devices can be operated, thereby realizing application synchronization between multiple display devices.
  • the target event includes a user triggering an input operation on the second display device
  • the description information of the target event includes the content input by the input operation
  • the second display device is specifically used to perform an input operation on the second display device. Display the content input by the input operation on its own display interface, generate the description information based on the input content, and send the description information to the first display device;
  • the first display device is specifically configured to receive the description information and synchronously display the content input by the input operation on its own display interface.
  • the display device can interact with the user, and the display devices can synchronize interaction events with the user. For example, when the user triggers an input operation on the second display device, the second display device receives the content input by the user, displays the content input by the user on its own display interface, and sends the content input by the user as the description information of the target event to The first display device, after receiving the description information of the target event, displays the content input by the input operation on its own display interface.
  • the content input by the input operation is the user's handwriting.
  • the user's handwriting can be synchronized in real time through the technical solution of this embodiment.
  • the handwriting whiteboard software is started on the second display device.
  • the user writes through the touch screen, and the whiteboard software draws the handwriting to the corresponding area.
  • the second display device can use the content input by the user as the description information of the target event.
  • the input event is sent to the first display device through the input event.
  • the first display device simulates a uinput device, and the whiteboard software running on the first display device draws it in the relevant area of the display interface of the first display device.
  • the first display device can delimit a portion of the display interface to display the content input by the user on the second display device to distinguish it from the display content of the first display device itself.
  • the first display device can also All areas of the display interface can be used to display content input by the user on the second display device.
  • the first display device can display the input content of multiple second display devices.
  • the first display device communicates with N second display devices, and the display interface of the first display device can be divided into N display areas.
  • the input content of the first second display device is displayed in the first display area
  • the input content of the second second display device is displayed in the second display area
  • N is an integer greater than or equal to 2.
  • the input content of one or more second display devices can be displayed through the display interface of the first display device, thereby achieving synchronization of display content between multiple display devices.
  • the first display device may be a master display device in the display device set
  • the second display device may be a slave display device in the display device set; of course, the first display device may also be a slave display device in the display device set.
  • the second display device may be the main display device in the display device set.
  • the screen information synchronization system is a blackboard system
  • the technical solution of the present disclosure can realize synchronization of writing operations on multiple blackboards in the blackboard system.
  • the target event includes the user triggering a playback operation on the first target media file of the first display device
  • the second display device is specifically configured to display the first target media file on a display interface, receive a user's playback operation instruction for the first target media file, and update the first target media file according to the playback operation instruction.
  • the playback status of the first target media file is used to generate the description information according to the playback status of the first target media file;
  • the first display device is specifically configured to control the playback state of the first target media file according to the description information.
  • file lists and files can be shared between the first display device and the second display device, thereby enabling cross-device playback of media files, where the media files include but are not limited to audio, video, and pictures.
  • the list of media files on any first display device can be viewed on the second display device.
  • the user can control the first display device to play a certain target media file on the second display device. , in order to distinguish, it is called the first target media file.
  • the second display device can control the playback, stop, pause, and fast forward of the first target media file.
  • the description information may be implemented by sending a Notify event from the second display device to the first display device.
  • the playback status of the first target media file is displayed on the second display device. This status information is sent by the first display device to the second display device.
  • Notify event is implemented, as shown in Figure 7.
  • the playback status of the first target media file can be sent to the second display device, including but not limited to: whether the first target media file is in play, stop, fast forward, Fast rewind and other states, the playback duration when in the playback state, the corresponding playback duration when in the stop state, the fast forward magnification when in the fast forward state and the corresponding playback duration, and the fast rewind magnification when in the fast rewind state And the corresponding playback duration, etc.
  • the second display device updates the playback status of the first target media file according to the playback operation instruction input by the user, such as the initial status of the first target media file. is in the playback state.
  • the second display device updates the playback state of the first target media file to fast-forward, determines the corresponding playback duration, and uses the fast-forward state and the corresponding playback duration as descriptions.
  • the information is sent to the first display device, and the first display device can control the playback state of the first target media file according to the description information.
  • the initial state of the first target media file is in a paused state.
  • the second display device updates the playback status of the first target media file to play, determines the corresponding playback duration, and plays the file.
  • the status and corresponding playback duration are sent to the first display device as description information, and the first display device can control the playback status of the first target media file based on the description information.
  • the second display device can delimit a portion of the display interface to display the playback control interface (including pause, play, fast forward, rewind, etc. buttons) of the first target media file to communicate with the second display device itself.
  • the second display device can also be used to display the playback control interface of the first target media file in all areas of the display interface.
  • the second display device can display the playback control interface of the first target media file of multiple first display devices.
  • the second display device communicates with N first display devices, and the display interface of the second display device can Divided into N display areas, the first display area displays the playback control interface of the first target media file of the first first display device, and the second display area displays the first target of the second first display device.
  • the playback control interface of media files, and so on, N is an integer greater than or equal to 2. In this way, through the display interface of the second display device, the playback status of the first target media file of one or more first display devices can be controlled, and the sharing, collaborative control and playback of media files can be realized between multiple display devices.
  • the second display device may be a master display device in the display device set
  • the first display device may be a slave display device in the display device set.
  • the target event includes a user triggering a playback operation on a second target media file.
  • the second target media file is split into multiple sub-target media files, and different sub-target media files include media in different sub-picture areas. Data, multiple sub-picture areas are spliced into a completed display screen,
  • the second display device is specifically configured to play a second sub-target media file among the plurality of sub-target media files, receive a user's playback operation instruction for the second sub-target media file, and update the playback operation instruction according to the playback operation instruction.
  • the playback status of the second sub-target media file is generated according to the playback status of the second sub-target media file;
  • the first display device is specifically configured to play a first sub-target media file among the plurality of sub-target media files, and control the play status of the first sub-target media file according to the description information.
  • the display device set includes a first display device and two second display devices.
  • the display screen of the first display device can As the main display screen, the display screen of the second display device can be used as the secondary display screen.
  • Each display screen displays a part of the picture and is spliced to display a large picture.
  • the data of the second target media file can be split according to the size ratio of the display screen of the display device, so that the sub-screen of the sub-target media file corresponding to each display device
  • the size of the display area is proportional to the size of the display screen of the display device. The larger the size of the display screen of the display device, the larger the size of the displayed sub-picture display area.
  • the playback state of the sub-target media file is controlled according to the playback operation instruction input by the user, including but not limited to: whether the second target media file is in play, stop, fast forward, fast Rewind state, the playback duration when in the playback state, the corresponding playback duration when in the stop state, the fast forward magnification and corresponding playback duration when in the fast forward state, the fast rewind magnification when in the fast rewind state, and The corresponding playback duration, etc., and the description information is generated according to the playback status of the sub-target media file, and the description information is sent to the first display device through an Event message.
  • the first display device controls the playback of the corresponding sub-target media file based on the description information. status to achieve playback synchronization between multiple display devices.
  • the second display device may be a master display device in the display device set, and the first display device may be a slave display device in the display device set.
  • the first display device may be a master display device in the display device set, and the second display device may be a slave display device in the display device set.
  • Embodiments of the present disclosure also provide a screen information synchronization method, which is applied to the screen information synchronization system as described above. As shown in Figure 9, the method includes:
  • Step 101 The second display device sends the description information of the target event to the first display device
  • Step 102 The first display device receives the description information of the target event sent by the second display device, and performs a synchronization operation based on the description information.
  • the second display device can synchronize the description information of the target event to the first display device, and the first display device can perform corresponding operations according to the description information of the target event, so that multiple Collaboration can be achieved between display devices, including but not limited to application synchronization, collaborative control, and joint playback of media files.
  • the first display device and the second display device are connected through wireless communication without the need to connect through hardware interfaces and physical wiring, which does not increase the hardware cost, and this embodiment does not require the first display device and the second display device to be connected.
  • this embodiment does not require the first display device and the second display device to be connected.
  • the first display device and the second display device cooperate together.
  • the first display device and the second display device are electronic devices with display screens, including but not limited to mobile phones (such as Android mobile phones, iOS mobile phones, etc.), Laptops, tablets, handheld computers, MID (Mobile Internet Devices, mobile Internet devices), PAD, desktop computers, smart TVs, smart blackboards, etc.
  • Wireless communication includes: Bluetooth, WIFI and other technologies that implement wireless communication.
  • the first display device and the second display device can be connected through WIFI.
  • the "first" in the first display device and the “second” in the second display device are only to distinguish the display devices.
  • the first display device it is the first display device, and other display devices
  • the device is a second display device.
  • the first display device and the second display device form a display device set.
  • a master display device can be set as the main controlled display device, and other display devices can be set as slave display devices.
  • the master display device can be the first display device. device, or it can be a second display device.
  • a display device can be agreed upon in advance as the main display device, or a display device can be re-selected as the main display device later based on the actual application.
  • the master display device can communicate with the network and the slave display device through wireless communication, and the slave display device can communicate with the master display device through wireless communication.
  • the master display device When the master display device is connected to the slave display device and the network through WIFI, the master display device works in station (STA, station) mode, and the slave display device works in access point (AP, Access Point) mode. All display devices are connected via WIFI, without the need for additional hardware interfaces and cables. And even if the WIFI connection is occupied between display devices, it will not affect the connection between the main display device and the network.
  • STA station
  • AP Access Point
  • the master display device has a primary display screen
  • the slave display device has a secondary display screen.
  • the primary display screen and the secondary display screen can be displayed independently, and can display the same content or different content, such as the secondary display
  • the main display screen displays the user's writing, and the main display screen displays the displayed PPT or video; or both the main display screen and the secondary display screen display the user's handwriting; or the main display screen and the secondary display screen play media files simultaneously; or the main display screen
  • the main screen and secondary display screen are spliced to display a complete picture.
  • the second display device is also used to broadcast the list of target events to be synchronized or collaborated to the first display device, or to send it to a specific first display device.
  • the first display device may receive a list of target events to be synchronized or collaborated sent or broadcast by the second display device, where the list of target events includes an identification of at least one target event.
  • the first display device can subscribe to the required target events, send a subscription request to the second display device, indicating to obtain the description information of the target event, and the second display device is also used to receive all the target events. Describe the subscription request, so that after the target event is triggered, the second display device will send the description information of the target event to the first display device.
  • the first display device is also used to send a list of target events to the second display device.
  • the list of target events includes the identification of at least one target event. It can also receive a subscription request from the second display device and trigger the target event. After the event, the first display device will send the description information of the target event to the first display device.
  • the operations performed by the second display device will also be performed by the first display device.
  • the first display device generates description information of the target event and sends the description information to the second display device for other second display devices.
  • the device performs corresponding operations based on the description information.
  • this embodiment takes the first display device or the second display device as an example to introduce the operations that the display device needs to perform.
  • the operations performed by the first display device can also be performed by the second display device.
  • Execution, the operation performed by the second display device can also be performed by the first display device.
  • the description information of the target event may be sent between the first display device and the second display device in a broadcast manner, or in an end-to-end manner.
  • the description information of the target event includes at least one of the following:
  • the source display device indicates the sender of the description information, that is, which display device sends the description information of the target event;
  • the target display device indicates the recipient of the description information, that is, the display device to which the description information of the target event is sent;
  • Data type data types include but are not limited to four types: File, Event, Notify, and Object;
  • Data length the length of the data payload
  • the description information of the target event may include one item of the above information, or may include several items of the above information.
  • the first display device will receive the description information of the target event. , determine whether it is a target display device. If it is not a target display device, you can ignore the description information of the target event; if it is a target display device, perform corresponding synchronization operations based on the description information of the target event.
  • the display description information includes data type and data priority; the first display device is used to arrange the description information according to the data type to obtain multiple data queues, and arrange the description information according to the priority of the data type. Sorting the plurality of data queues; in each data queue, sorting the description information according to the priority of data; according to the order of the description information in the data queue, according to the description information Perform synchronization operations.
  • the data types include File, Event, Notify, and Object
  • four data queues are maintained on each display device side: File queue, Event queue, Notify queue, and Object queue. If receiving The data type of the description information of the target event received is File queue, then the description information of the target event is stored in the File queue; if the data type of the description information of the target event received is Event queue, the description information of the target event is stored in the File queue. Stored in the Event queue; if the data type of the description information of the received target event is Notify queue, then the description information of the target event is stored in the Notify queue; if the data type of the description information of the received target event is Object queue , the description information of the target event is stored in the Object queue.
  • Each data queue adopts a first-in, first-out method.
  • Each data queue has a different priority.
  • the priority value can be configured for each data queue, such as in the priority The larger the value, the higher the priority.
  • the priority of the Object queue is higher than the priority of the Event queue
  • the priority of the Event queue is higher than the priority of the Notify queue
  • the priority of the Notify queue is higher than the priority of the File queue. priority.
  • each data queue there may be description information for multiple target events.
  • the description information for multiple target events will also be processed according to the priority. For example, in the Object queue, high-level data will be processed first. Priority data, if the data have the same priority, the data will be processed in a first-in, first-out manner. Through priority policy scheduling, data called by certain emergency programs can be processed first, and some file transfer data can be processed with low priority to meet user needs and improve user experience.
  • the target events include but are not limited to the user triggering a click operation on the application icon of the display device (including the first display device and the second display device), the user triggering an input operation on the display device, and the user triggering an input operation on the display device.
  • the display devices in the display device collection collaborate to achieve application synchronization, collaborative control, and/or media playback.
  • the target event includes a user triggering a click operation on an application icon of the first display device
  • the second display device is specifically configured to display the application icon of the first display device on a display interface, receive a user's click operation instruction for the application icon, generate the description information according to the click operation instruction, and convert the The description information is sent to the first display device;
  • the first display device is specifically configured to open an interface of an application corresponding to the application icon according to the description information;
  • the first display device is also configured to feed back the status information of the application to the second display device;
  • the second display device is further configured to mark the application icon as opened according to the status information.
  • the second display device can read all applications of the first display device, and can display the application icons of the first display device on its own display interface.
  • the second display device can delineate the application icons on the display interface. Part of the area, such as the area circled in the dotted box, displays the application icon of the first display device to distinguish it from the application icon of the second display device itself; of course, the second display device can also use the application icon in all areas of the display interface. to display the application icon of the first display device.
  • the second display device may be a master display device
  • the first display device may be a slave display device.
  • the communication between the first display device and the second display device adopts the data type of Object and is transmitted in the form of a list.
  • the second display device obtains the list, it displays it as a general icon on the list specifically for the first display device.
  • application icons 1, 2, 3, 4, 5 and 6 of the first display device are displayed on the display interface of the second display device.
  • the click operation instruction of the icon generates description information according to the click operation instruction, and notifies the first display device of the description information.
  • the description information indicates that the corresponding application needs to be opened.
  • the first display device opens the application corresponding to the application icon. interface, and can feed back a status to the second display device in the form of a notification message.
  • the second display device marks the application icon as open, or the second display device can directly receive the user's
  • the click operation instruction of the application icon is executed, the corresponding application icon is marked as opened.
  • the second display device can send the description information of the target event to other display devices to achieve application synchronization between display devices.
  • the second display device can display application icons of multiple first display devices.
  • the second display device communicates with N first display devices, and the display interface of the second display device can be divided into N display areas.
  • the application icon of the first first display device is displayed in the first display area
  • the application icon of the second first display device is displayed in the second display area
  • N is an integer greater than or equal to 2.
  • the application icons of one or more first display devices can be operated, thereby realizing application synchronization between multiple display devices.
  • the target event includes a user triggering an input operation on the second display device
  • the description information of the target event includes the content input by the input operation
  • the second display device is specifically used to perform an input operation on the second display device. Display the content input by the input operation on its own display interface, generate the description information based on the input content, and send the description information to the first display device;
  • the first display device is specifically configured to receive the description information and synchronously display the content input by the input operation on its own display interface.
  • the display device can interact with the user, and the display devices can synchronize interaction events with the user. For example, when the user triggers an input operation on the second display device, the second display device receives the content input by the user, displays the content input by the user on its own display interface, and sends the content input by the user as the description information of the target event to The first display device, after receiving the description information of the target event, displays the content input by the input operation on its own display interface.
  • the content input by the input operation is the user's handwriting.
  • the user's handwriting can be synchronized in real time through the technical solution of this embodiment.
  • the handwriting whiteboard software is started on the second display device.
  • the user writes through the touch screen, and the whiteboard software draws the handwriting to the corresponding area.
  • the second display device can use the content input by the user as the description information of the target event.
  • the input event is sent to the first display device through the input event.
  • the first display device simulates a uinput device, and the whiteboard software running on the first display device draws it in the relevant area of the display interface of the first display device.
  • the first display device can delimit a portion of the display interface to display the content input by the user on the second display device to distinguish it from the display content of the first display device itself.
  • the first display device can also All areas of the display interface can be used to display content input by the user on the second display device.
  • the first display device can display the input content of multiple second display devices.
  • the first display device communicates with N second display devices, and the display interface of the first display device can be divided into N display areas.
  • the input content of the first second display device is displayed in the first display area
  • the input content of the second second display device is displayed in the second display area
  • N is an integer greater than or equal to 2.
  • the input content of one or more second display devices can be displayed through the display interface of the first display device, thereby achieving synchronization of display content between multiple display devices.
  • the first display device may be a master display device in the display device set
  • the second display device may be a slave display device in the display device set; of course, the first display device may also be a slave display device in the display device set.
  • the second display device may be the main display device in the display device set.
  • the screen information synchronization system is a blackboard system
  • the technical solution of the present disclosure can realize synchronization of writing operations on multiple blackboards in the blackboard system.
  • the target event includes the user triggering a playback operation on the first target media file of the first display device
  • the second display device is specifically configured to display the first target media file on a display interface, receive a user's playback operation instruction for the first target media file, and update the first target media file according to the playback operation instruction.
  • the playback status of the first target media file is used to generate the description information according to the playback status of the first target media file;
  • the first display device is specifically configured to control the playback state of the first target media file according to the description information.
  • file lists and files can be shared between the first display device and the second display device, thereby enabling cross-device playback of media files, where the media files include but are not limited to audio, video, and pictures.
  • the list of media files on any first display device can be viewed on the second display device.
  • the user can control the first display device to play a certain target media file on the second display device. , in order to distinguish, it is called the first target media file.
  • the second display device can control the playback, stop, pause, and fast forward of the first target media file.
  • the description information may be implemented by sending a Notify event from the second display device to the first display device.
  • the playback status of the first target media file is displayed on the second display device. This status information is sent by the first display device to the second display device.
  • Notify event is implemented, as shown in Figure 7.
  • the playback status of the first target media file can be sent to the second display device, including but not limited to: whether the first target media file is in play, stop, fast forward, Fast rewind and other states, the playback duration when in the playback state, the corresponding playback duration when in the stop state, the fast forward magnification when in the fast forward state and the corresponding playback duration, and the fast rewind magnification when in the fast rewind state And the corresponding playback duration, etc.
  • the second display device updates the playback status of the first target media file according to the playback operation instruction input by the user, such as the initial status of the first target media file. is in the playback state.
  • the second display device updates the playback state of the first target media file to fast-forward, determines the corresponding playback duration, and uses the fast-forward state and the corresponding playback duration as descriptions.
  • the information is sent to the first display device, and the first display device can control the playback state of the first target media file according to the description information.
  • the initial state of the first target media file is in a paused state.
  • the second display device updates the playback status of the first target media file to play, determines the corresponding playback duration, and plays the file.
  • the status and corresponding playback duration are sent to the first display device as description information, and the first display device can control the playback status of the first target media file based on the description information.
  • the second display device can delimit a portion of the display interface to display the playback control interface (including pause, play, fast forward, rewind, etc. buttons) of the first target media file to communicate with the second display device itself.
  • the second display device can also be used to display the playback control interface of the first target media file in all areas of the display interface.
  • the second display device can display the playback control interface of the first target media file of multiple first display devices.
  • the second display device communicates with N first display devices, and the display interface of the second display device can Divided into N display areas, the first display area displays the playback control interface of the first target media file of the first first display device, and the second display area displays the first target of the second first display device.
  • the playback control interface of media files, and so on, N is an integer greater than or equal to 2. In this way, through the display interface of the second display device, the playback status of the first target media file of one or more first display devices can be controlled, and the sharing, collaborative control and playback of media files can be realized between multiple display devices.
  • the second display device may be a master display device in the display device set
  • the first display device may be a slave display device in the display device set.
  • the target event includes a user triggering a playback operation on a second target media file.
  • the second target media file is split into multiple sub-target media files, and different sub-target media files include media in different sub-picture areas. Data, multiple sub-picture areas are spliced into a completed display screen,
  • the second display device is specifically configured to play a second sub-target media file among the plurality of sub-target media files, receive a user's playback operation instruction for the second sub-target media file, and update the playback operation instruction according to the playback operation instruction.
  • the playback status of the second sub-target media file is generated according to the playback status of the second sub-target media file;
  • the first display device is specifically configured to play a first sub-target media file among the plurality of sub-target media files, and control the play status of the first sub-target media file according to the description information.
  • the display device set includes a first display device and two second display devices.
  • the display screen of the first display device can As the main display screen, the display screen of the second display device can be used as the secondary display screen.
  • Each display screen displays a part of the picture and is spliced to display a large picture.
  • the data of the second target media file can be split according to the size ratio of the display screen of the display device, so that the sub-screen of the sub-target media file corresponding to each display device
  • the size of the display area is proportional to the size of the display screen of the display device. The larger the size of the display screen of the display device, the larger the size of the displayed sub-picture display area.
  • the playback state of the sub-target media file is controlled according to the playback operation instruction input by the user, including but not limited to: whether the second target media file is in play, stop, fast forward, fast Rewind state, the playback duration when in the playback state, the corresponding playback duration when in the stop state, the fast forward magnification and corresponding playback duration when in the fast forward state, the fast rewind magnification when in the fast rewind state, and The corresponding playback duration, etc., and the description information is generated according to the playback status of the sub-target media file, and the description information is sent to the first display device through an Event message.
  • the first display device controls the playback of the corresponding sub-target media file based on the description information. status to achieve playback synchronization between multiple display devices.
  • the second display device may be a master display device in the display device set, and the first display device may be a slave display device in the display device set.
  • the first display device may be a master display device in the display device set, and the second display device may be a slave display device in the display device set.
  • An embodiment of the present disclosure also provides a display device, as shown in Figure 10, including a processor 32 and a memory 31.
  • the memory 31 stores programs or instructions that can be run on the processor 32.
  • the memory 31 stores programs or instructions that can be run on the processor 32.
  • the programs or instructions are executed by the processor 32, the first display device is implemented as described above. Side screen information synchronization method steps.
  • the memory 31 stores programs or instructions that can be run on the processor 32.
  • the programs or instructions are executed by the processor 32, the second display device is implemented as described above. Side screen information synchronization method steps.
  • Embodiments of the present disclosure also provide a readable storage medium on which programs or instructions are stored. When the programs or instructions are executed by a processor, the steps of the screen information synchronization method as described above are implemented.
  • Computer-readable media includes both persistent and non-volatile, removable and non-removable media that can be implemented by any method or technology for storage of information.
  • Information may be computer-readable instructions, data structures, modules of programs, or other data.
  • Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), and read-only memory.
  • PRAM phase change memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • RAM random access memory
  • read-only memory read-only memory
  • ROM read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • flash memory or other memory technology
  • compact disc read-only memory CD-ROM
  • DVD digital versatile disc
  • Magnetic tape cassettes tape magnetic disk storage or other magnetic storage terminal devices or any other non-transmission medium may be used to store information that can be accessed by a computing terminal device.
  • computer-readable media does not include transitory media, such as modulated data signals and carrier waves.
  • the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation.
  • the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology.
  • the computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

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Abstract

La présente invention se rapporte au domaine technique de l'affichage, et concerne un procédé et un système de synchronisation d'informations d'écran. Le système de synchronisation d'informations d'écran comprend un premier dispositif d'affichage et un second dispositif d'affichage ; le premier dispositif d'affichage est connecté en communication au second dispositif d'affichage ; le second dispositif d'affichage est utilisé pour envoyer des informations de description d'un événement cible au premier dispositif d'affichage ; et le premier dispositif d'affichage est utilisé pour recevoir les informations de description de l'événement cible envoyées par le second dispositif d'affichage, et exécuter une opération de synchronisation en fonction des informations de description. La solution technique selon la présente invention peut réaliser une coopération entre de multiples dispositifs d'affichage.
PCT/CN2022/095979 2022-05-30 2022-05-30 Procédé et système de synchronisation d'informations d'écran WO2023230765A1 (fr)

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