CN112069544A

CN112069544A - Server, display device and communication method

Info

Publication number: CN112069544A
Application number: CN202010986886.7A
Authority: CN
Inventors: 赖园园; 王光强
Original assignee: Qingdao Hisense Media Network Technology Co Ltd
Current assignee: Qingdao Hisense Media Network Technology Co Ltd
Priority date: 2020-07-06
Filing date: 2020-09-18
Publication date: 2020-12-11
Anticipated expiration: 2040-09-18
Also published as: CN112069544B

Abstract

In the embodiments provided in the present application, belonging to the display technology, a server, a display device and a communication method are provided, where the server includes: the processor is used for executing: receiving a deleting instruction sent by display equipment, wherein the deleting instruction comprises a file identifier; judging whether a target transmission thread corresponding to the file identification exists in the file transmission record; if yes, suspending deletion of the file corresponding to the file identifier; and if not, deleting the file corresponding to the file identifier. The method and the device are used for avoiding privacy disclosure of the mobile terminal and improving privacy safety of the user.

Description

Server, display device and communication method

Technical Field

The embodiment of the application relates to a display technology. And more particularly, to a server, a display apparatus, and a communication method.

Background

At present, with the development of smart television technology, smart televisions have more and more functions. For example, the smart television can perform data interaction with a terminal device (e.g., a smart phone, a tablet computer, etc.).

In the related art, in the process of data interaction between the smart television and the terminal device, the files stored in the smart television can be managed through the terminal device, or the files stored in the terminal device can be watched through the smart television. When the terminal device manages files stored in the smart television, the smart television can record information (including file information and user information) of the terminal device, and privacy of a user is leaked.

Disclosure of Invention

The application provides a server, a display device and a communication method in an exemplary embodiment. The method and the device are used for avoiding privacy disclosure of the mobile terminal and improving privacy safety of the user.

In a first aspect, the present application provides a server comprising: a processor for, among other things,

the processor is used for executing:

receiving a deleting instruction sent by display equipment, wherein the deleting instruction comprises a file identifier;

judging whether a target transmission thread corresponding to the file identification exists in the file transmission record;

if yes, suspending deletion of the file corresponding to the file identifier;

and if not, deleting the file corresponding to the file identifier.

In a second aspect, the present application provides a server, where a file list is stored in the server, where the file list includes a mapping relationship between a file identifier and at least one user identifier corresponding to the file identifier, and the method includes: a processor for, among other things,

the processor is used for executing:

receiving a deleting instruction sent by display equipment, wherein the deleting instruction comprises a user identifier;

judging whether other user identifications except the user identification exist in at least one user identification corresponding to the file identification corresponding to the user identification in the file list;

if the file does not exist, deleting the mapping relation between the user identifier in the file list and the file identifier corresponding to the user identifier, sending a deletion instruction to the cloud equipment, wherein the deletion instruction is used for instructing the cloud equipment to delete the file corresponding to the user identifier, and the file corresponding to the user identifier is stored in the cloud equipment;

and if so, deleting the mapping relation between the user identifier in the file list and the file identifier corresponding to the user identifier.

In a third aspect, the present application provides a display device, comprising: a display, a network attached memory, and a processor, wherein,

the display is used for displaying a user interface;

the network attached storage is used for storing files;

the processor is used for executing:

receiving a deleting instruction sent by a mobile terminal, wherein the deleting instruction comprises a file identifier;

deleting the file corresponding to the file identifier according to the file identifier;

and forwarding a deleting instruction to the server, wherein the deleting instruction is used for enabling the server to suspend deleting the file corresponding to the file identifier when the target transmission thread corresponding to the file identifier exists, and deleting the file corresponding to the file identifier when the target transmission thread corresponding to the file identifier does not exist.

In a fourth aspect, the present application provides a communication method, applied to a server, including:

judging whether the file transmission record has a target transmission thread which is in progress corresponding to the file identifier according to the file identifier;

if yes, suspending deletion of the file corresponding to the file identifier;

and if not, deleting the file corresponding to the file identifier.

In a fifth aspect, the present application provides a communication method, applied to a server, where a file list is stored in the server, and the file list includes a mapping relationship between a file identifier and at least one user identifier corresponding to the file identifier, and the method includes:

In a sixth aspect, the present application provides a communication method applied to a display device, the method including:

receiving a deleting instruction sent by a mobile terminal, wherein the deleting instruction comprises a file identifier; deleting the file corresponding to the file identifier according to the file identifier; and forwarding a deleting instruction to the server, wherein the deleting instruction is used for enabling the server to suspend deleting the file corresponding to the file identifier when the target transmission thread corresponding to the file identifier exists, and deleting the file corresponding to the file identifier when the target transmission thread corresponding to the file identifier does not exist.

In some embodiments, after forwarding the delete instruction to the server; the method further comprises the following steps: and receiving display information sent by the server, and forwarding the display information to the mobile terminal, wherein the display information is used for indicating that the file corresponding to the file identifier in the server is being used.

The embodiment of the application provides a server, a display device and a communication method, wherein a processor in the server can execute the following communication method: receiving a deleting instruction sent by display equipment, wherein the deleting instruction comprises a file identifier; judging whether the file transmission record has a target transmission thread which is in progress corresponding to the file identifier according to the file identifier; if yes, suspending deletion of the file corresponding to the file identifier; if the file transmission record does not exist, deleting the file corresponding to the file identifier, and in the process, if the file transmission record has a target transmission thread which is in progress and corresponds to the file identifier, suspending the deletion of the file corresponding to the file identifier; if the file transmission record does not have the ongoing target transmission thread corresponding to the file identifier, the file corresponding to the file identifier is temporarily deleted, and the file corresponding to the file identifier is deleted, so that information leakage of the mobile terminal can be avoided, and privacy safety of a user is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic diagram illustrating an application scenario of a communication method;

fig. 2 is a block diagram schematically showing a hardware configuration of a display device 200 in the exemplary embodiment;

fig. 3 is a block diagram schematically showing a configuration of the control apparatus 100 in the exemplary embodiment;

fig. 4 is a diagram schematically illustrating a software system configuration of the display device 200 in the exemplary embodiment;

fig. 5 shows a first flow chart of a communication method;

fig. 6 schematically shows a second flow chart of the communication method;

fig. 7 schematically shows a third flow chart of the communication method;

fig. 8 schematically shows a fourth flowchart of the communication method;

fig. 9 shows an exemplary flow chart diagram five of the communication method.

Detailed Description

To make the objects, technical solutions and advantages of the exemplary embodiments of the present application clearer, the technical solutions in the exemplary embodiments of the present application will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present application, and it is obvious that the described exemplary embodiments are only a part of the embodiments of the present application, but not all the embodiments.

All other embodiments, which can be derived by a person skilled in the art from the exemplary embodiments shown in the present application without inventive effort, shall fall within the scope of protection of the present application. Moreover, while the disclosure herein has been presented in terms of exemplary one or more examples, it is to be understood that each aspect of the disclosure can be utilized independently and separately from other aspects of the disclosure to provide a complete disclosure.

It should be understood that the terms "first," "second," "third," and the like in the description and in the claims of the present application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used are interchangeable under appropriate circumstances and can be implemented in sequences other than those illustrated or otherwise described herein with respect to the embodiments of the application, for example.

Furthermore, the terms "comprises" and "comprising," as well as any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or device that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such product or device.

The term "module" as used herein refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and/or software code that is capable of performing the functionality associated with that element.

The term "remote control" as used in this application refers to a component of an electronic device, such as the display device disclosed in this application, that is typically wirelessly controllable over a short range of distances. Typically using infrared and/or Radio Frequency (RF) signals and/or bluetooth to connect with the electronic device, and may also include WiFi, wireless USB, bluetooth, motion sensor, etc. For example: the hand-held touch remote controller replaces most of the physical built-in hard keys in the common remote control device with the user interface in the touch screen.

The term "gesture" as used in this application refers to a user's behavior through a change in hand shape or an action such as hand motion to convey a desired idea, action, purpose, or result.

Fig. 1 is a schematic diagram illustrating an application scenario of the communication method. As shown in fig. 1, includes: the system comprises a control device 100, a display device 200, a mobile terminal 300, a forwarding server 400, a server 500 and a cloud device 600. The display device 200 includes a Network Attached Storage (NAS).

In some embodiments, the control device 100 may be a remote controller, and the communication between the remote controller and the display device 200 includes an infrared protocol communication or a bluetooth protocol communication, and other short-distance communication methods, etc., and the display device 200 is controlled by wireless or other wired methods. The user may input a user command through a key on a remote controller, voice input, control panel input, etc. to control the display apparatus 200. Such as: the user can input a corresponding control command through a volume up/down key, a channel control key, up/down/left/right moving keys, a voice input key, a menu key, a power on/off key, etc. on the remote controller, to implement the function of controlling the display device 200.

In some embodiments, the functionality of controlling the display device 200 may also be implemented using a mobile terminal 300 (e.g., mobile terminal, tablet, computer, laptop, and other mobile terminals 300, etc.). For example, the display device 200 is controlled using an application program running on the mobile terminal 300 to cause the display device 200 to display a file (e.g., audio, video, audio-video, picture, Word file, PPT file, etc.) in the mobile terminal 300, or to download a file stored in the display device 200 to the mobile terminal 300 so that the mobile terminal 300 can display the file.

In some embodiments, the application may provide the user with various controls, through configuration, on a screen associated with the mobile terminal 300, or in an intuitive User Interface (UI). For example, the mobile terminal 300 may install a software application with the display device 200, implement connection communication through a network communication protocol, and implement the purpose of one-to-one control operation and data communication. Such as: a data communication protocol between the mobile terminal 300 and the display apparatus 200 is established to enable the mobile terminal 300 to directly perform data communication with the display apparatus 200 in a local area network or to enable data communication with the display apparatus 200 through the relay server 400 through the mobile terminal 300 in a wide area network. Such as: establishing a control instruction protocol between the mobile terminal 300 and the display device 200, synchronizing a remote control keyboard of the control device 100 to the mobile terminal 300, and controlling the function of the display device 200 by controlling a user interface on the mobile terminal 300; the audio and video content displayed on the mobile terminal 300 can also be transmitted to the display device 200, so as to realize the synchronous display function.

The display apparatus 200 shown in fig. 1 also performs data communication with the server 500 through various communication means. For example, the plurality of communication means may include a Local Area Network (LAN), a Wireless Local Area Network (WLAN), a wide area network, and other networks.

In some embodiments, when the display device 200 is used to display a file in the mobile terminal 300, the NAS service may be started by an application program in the mobile terminal 300, and a NAS service request is sent to the server 500 (e.g., a physical server), and the server 500 issues the NAS service request to the display device 200 (e.g., a television); the display apparatus 200 uploads the NAS directory file to the server 500; the server 500 directly transmits the NAS directory file to the mobile terminal 300; the mobile terminal 300 displays a file directory interface to a user according to the received NAS directory file; the mobile terminal 300 receives the selection of the user on the file in the file directory interface, and sends an access request to the server 500 according to the selected file; the server 500 issues the access request to the display device 200; the display device 200 transmits the file corresponding to the access request to the server 500 (where multiple files are sent concurrently), and if the server 500 determines that the file is a small file (for example, a text file or a directory file), the file is directly sent to the display device 200; if the server 500 determines that the file is a large file (for example, a thumbnail), determining whether the file is uploaded to the cloud device 600, if so, directly sending a stored URL corresponding to the file to the display device 200, if not, uploading the file to the cloud device 600, and after receiving the URL returned by the cloud device 600, generating a URL message (including an ID and an address) according to the URL (i.e., the address) and sending the URL message to the display device 200; the display device 200 assembles a new address message according to the ID and the address in the received URL message, wherein the new address message at least comprises a name and an address (wherein the name is determined according to the mapping relation between the ID and the name; the address is determined according to the mapping relation between the ID and the address), and the ID; the display device 200 transmits the address information to the server 500; the server 500 transmits the address information to the mobile terminal 300; the mobile terminal 300 accesses the cloud device 600 according to the address in the address information, and displays the file after downloading the file corresponding to the address.

For example: the mobile terminal 300 receives a selection of a picture by a user, and sends a picture access message to the server 500, wherein the picture access message includes a name or an ID of the picture.

In some embodiments, the server 500 determines whether the picture is uploaded to the cloud device 600 according to the name or ID of the picture, queries a URL and sends the URL to the mobile terminal 300 if the picture is uploaded, and notifies the display device 200 to upload the picture and sends the uploaded picture to the cloud device 600 to receive the URL returned by the cloud device 600 if the picture is not uploaded, and generates a URL message according to the URL to the mobile terminal 300.

In other embodiments, the server 500 sends the picture access message to the display device 200, the display device 200 uploads the corresponding picture to the server 500, the server 500 determines whether the picture is uploaded to the cloud device 600 according to the name or ID of the picture, and if the picture is uploaded, the server queries a URL and sends the URL to the mobile terminal 300; if the picture is not uploaded, the picture sent by the display device 200 is forwarded to the cloud device 600 to receive the URL, a URL message is generated according to the URL, and the URL message is sent to the mobile terminal 300, so that the mobile terminal 300 displays the picture according to the URL message.

For example, the server 500 may receive file upload information (including a file to be uploaded) sent by the display device 200, and record transmission information of the display device 200, where the file upload information instructs the server 500 to send the file to be uploaded to the cloud device 600, so that the cloud device 600 caches the file to be uploaded.

For example, the server 500 may also transmit a network address to the display apparatus 200 to cause the display apparatus 200 to forward the network address to the mobile terminal 300. The network address is used to instruct the mobile terminal 300 to download the file to be uploaded from the cloud device 600.

For example, the server 500 may also receive a display apparatus 200 deletion instruction to delete the transmission information of the display apparatus 200; and/or sending a deletion instruction to the cloud device 600, so that the cloud device 600 deletes the target cache file.

The display device 200 may be a liquid crystal display, an OLED display, a projection display device. The present application is not limited to the type, size, resolution, etc. of the display device 200, and those skilled in the art will appreciate that the display device 200 may be modified in performance and configuration as desired. The display apparatus 200 may additionally provide an intelligent network tv function that provides a computer support function in addition to the broadcast receiving tv function. Examples include a web tv, a smart tv, an Internet Protocol Tv (IPTV), and the like.

A hardware configuration block diagram of a display device 200 in an exemplary embodiment is exemplarily shown in fig. 2. In some embodiments, the display device 200 includes at least one of a first controller 201, a tuner demodulator, a first communication interface 204, a detector 205, a first input/output interface 206, a display 202, an audio output module 203, a first memory, a first power supply, and an infrared receiver.

In some embodiments, the display 202 is configured to receive the image signal output from the first controller 201, and display the video content, the image, and the components in the menu manipulation interface. In some embodiments, the display video content may be from broadcast television content, as well as from various broadcast signals received via wired or wireless communication protocols.

In some embodiments, the display 202 may display various image content received over a network communication protocol and sent from a network server side.

In some embodiments, the display 202 includes a display screen component for presenting a picture, and a driving component that drives the display of an image.

The display 202 in some embodiments displays a user-manipulated UI interface generated in the display apparatus 200 and used to control the display apparatus 200.

In some embodiments, a driving component for driving the display is also included, depending on the type of display 202.

In some embodiments, the display 202 is a projection display 202, and may also include a projection device and a projection screen.

In some embodiments, the first communication interface 204 is a component for communicating with external devices or external servers according to various communication protocol types. For example: the first communication interface 204 may include at least one of a Wifi chip, a bluetooth communication protocol chip, a wired ethernet communication protocol chip, or other network communication protocol chip or near field communication protocol chip, and an infrared receiver.

In some embodiments, the display device may establish control signal and data signal transmission and reception with an external control device or a content providing device through the first communication interface 204.

In some embodiments, an infrared receiver may be used to receive infrared control signals for controlling the apparatus 100 (e.g., an infrared remote control, etc.).

In some embodiments, the detector 205 is a signal used by the display device 200 to collect external environment or interact with the outside.

In some embodiments, as shown in fig. 2, the first input/output interface 206 is configured to enable data transmission between the first controller 201 and other external devices (e.g., the mobile terminal 300, the forwarding server 400, the server 500) or other controllers. Such as: receiving a request from an external device, a network address, video signal data, and audio signal data, and transmitting an instruction, information, and the like to the external device.

In some embodiments, the first input/output interface 206 may include, but is not limited to, the following: the interface comprises any one or more of a high-definition multimedia interface (HDMI), an analog or data high-definition component input interface, a composite video input interface, a USB input interface, an RGB port and the like.

In some embodiments, the first input/output interface 206 may also form a composite input/output interface for the plurality of interfaces.

In some embodiments, as shown in fig. 2, the tuning demodulator is configured to receive a broadcast television signal through a wired or wireless receiving manner, perform modulation and demodulation processing such as amplification, mixing, resonance, and the like, and demodulate an audio and video signal from a plurality of wireless or wired broadcast television signals, where the audio and video signal may include a television audio and video signal carried in a television channel frequency selected by a user and an EPG data signal.

In some embodiments, the first controller 201 controls the operation of the display device and responds to user operations through various software control programs stored in a memory. The first controller 201 may control the overall operation of the display apparatus 200. For example: in response to receiving a user command for selecting a UI object to be displayed on the display 202, the first controller 201 may perform an operation related to the object selected by the user command. In some embodiments, the object may be any one of selectable objects, such as a hyperlink or an icon. Operations related to the selected object, such as: displaying an operation connected to a hyperlink page, document, image, or the like, or performing an operation of a program corresponding to an icon. The user command for selecting the UI object may be a command input through various input means (e.g., a mouse, a keyboard, a touch pad, etc.) connected to the display apparatus 200 or a voice command corresponding to a voice spoken by the user.

As shown in fig. 2, the first controller 201 includes at least one of a Random Access Memory (RAM), a Read-Only Memory (ROM), a video processor, an audio processor, other processors (e.g., a Graphics Processing Unit (GPU), a Central Processing Unit (CPU), a Communication Interface (e.g., a first Interface to an nth Interface), and a Communication Bus (Bus).

In some embodiments, a CPU processor is used to execute operating system and application program instructions stored in memory. And executing various application programs, data and contents according to various interactive instructions received from the outside so as to finally display and play various audio and video contents.

In some exemplary embodiments, the CPU processor may include a plurality of processors. The plurality of processors may include one main processor and a plurality of or one sub-processor. A main processor for performing some operations of the display apparatus 200 in a pre-power-up mode and/or operations of displaying a screen in a normal mode. A plurality of or one sub-processor for one operation in a standby mode or the like.

In some embodiments, a graphics processor for generating various graphics objects, such as: icons, operation menus, user input instruction display graphics, and the like. The display device comprises an arithmetic unit which carries out operation by receiving various interactive instructions input by a user and displays various objects according to display attributes. And a renderer for rendering various objects obtained by the arithmetic unit, wherein the rendered objects are displayed on the display 202.

In some embodiments, the video processor is configured to receive an external video signal, and perform video processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, image synthesis, and the like according to a standard codec protocol of the input signal, so as to obtain a signal displayed or played on the directly displayable device 200.

Illustratively, the video processor includes a demultiplexing module, a video decoding module, an image synthesizing module, a frame rate conversion module, a display formatting module, and the like. The demultiplexing module is used for demultiplexing the input audio and video data stream, and if the input MPEG-2 is input, the demultiplexing module demultiplexes the input audio and video data stream into a video signal and an audio signal. And the video decoding module is used for processing the video signal after demultiplexing, including decoding, scaling and the like. And the image synthesis module is used for carrying out superposition mixing processing on the GUI signal input by the user or generated by the user and the video image after the zooming processing by the graphic generator so as to generate an image signal for display. The frame rate conversion module is configured to convert an input video frame rate, such as a 60Hz frame rate into a 120Hz frame rate or a 240Hz frame rate, and the normal format is implemented in, for example, an interpolation frame mode. The display format module is used for converting the received video output signal after the frame rate conversion, and changing the signal to conform to the signal of the display format, such as outputting an RGB data signal.

In some embodiments, the graphics processor and the video processor may be integrated or may be separate. When the integrated setting is performed, processing of a graphic signal output to the display 202 can be performed. When separately configured, the graphics processor and the video processor may each perform different functions, such as a GPU + frc (frame Rate conversion) architecture.

In some embodiments, the audio processor is configured to receive an external audio signal, decompress and decode the received audio signal according to a standard codec protocol of the input signal, and perform noise reduction, digital-to-analog conversion, and amplification processing to obtain an audio signal that can be played in the speaker.

In some embodiments, the video processor may comprise one or more chips. The audio processor may also comprise one or more chips.

In some embodiments, the video processor and the audio processor may be separate chips, or may be integrated together with the first controller 201 into one or more chips.

In some embodiments, the audio output module 203 receives the sound signal output by the audio processor under the control of the first controller 201, such as: speakers, and external sound output terminals of a generating device that can output to an external device, in addition to speakers carried by the display device 200 itself, such as: external sound interface or earphone interface, etc., and may also include a near field communication module in the communication interface, for example: and the Bluetooth module is used for outputting sound of the Bluetooth loudspeaker.

The first power supply supplies power to the display device 200 from the power input from the external power source under the control of the first controller 201. The first power supply may include a built-in power supply circuit installed inside the display apparatus 200, or may be a power supply interface installed outside the display apparatus 200 to provide an external power supply in the display apparatus 200.

A user input interface 207 for receiving an input signal of a user and then transmitting the received user input signal to the first controller 201. The user input signal may be a remote controller signal received through an infrared receiver, and various user control signals may be received through the network communication module.

For example, a user inputs a user command through the remote controller 100 or the mobile terminal 300, the user input interface 207 responds to the user input through the first controller 201 according to the user input, and the display device 200 responds to the user input through the first controller 201.

In some embodiments, the user may input a user command on a Graphical User Interface (GUI) displayed on the display 202, and the user input interface 207 receives the user input command through the Graphical User Interface (GUI). Alternatively, the user may input a user command by inputting a specific sound or gesture, and the user input interface 207 receives the user input command by recognizing the sound or gesture through the sensor. In some embodiments, a "user interface" is a media interface for interaction and information exchange between an application or operating system and a user that enables conversion between an internal form of information and a form that is acceptable to the user. A commonly used presentation form of the User Interface is a Graphical User Interface (GUI), which refers to a User Interface related to computer operations and displayed in a graphical manner. It may be an interface element such as an icon, a window, a control, etc. displayed in the display screen of the electronic device, where the control may include a visual interface element such as an icon, a button, a menu, a tab, a text box, a dialog box, a status bar, a navigation bar, a Widget, etc.

The first memory includes a memory storing various software modules for driving the display device 200. Such as: various software modules stored in the first memory, including: at least one of a basic module, a detection module, a communication module, a display control module, a browser module, and various service modules. Wherein the basic module is a bottom layer software module for signal communication among the various hardware in the postpartum care display device 200 and for sending processing and control signals to the upper layer module. The detection module is a management module for collecting various information from various sensors or user input interfaces 207, performing digital-to-analog conversion, and analyzing and managing.

For example: the voice recognition module comprises a voice analysis module and a voice instruction database module. The display control module is a module for controlling the display 202 to display image content, and may be used to play information such as multimedia image content and UI interface. And the communication module is used for carrying out control and data communication with external equipment. And the browser module is used for executing a module for data communication between browsing servers. And the service module is used for providing various services and modules including various application programs.

Meanwhile, the first memory is also used for storing and receiving external data and user data, images of various items in various user interfaces, visual effect maps of focus objects and the like.

In addition to the first storage, the display device 200 is provided with an external storage (e.g., NAS) that is connected to the first controller 201 in a pluggable manner via a hardware interface.

A block diagram of the configuration of the control apparatus 100 in the exemplary embodiment is exemplarily shown in fig. 3. As shown in fig. 3, the control apparatus 100 includes a second controller 101, a second communication interface 103, a second input/output interface 102, a second memory, and a second power supply.

The control device 100 is configured to control the display device 200 and may receive an input operation instruction of a user and convert the operation instruction into an instruction recognizable and responsive by the display device 200, serving as an interaction intermediary between the user and the display device 200. Such as: the user responds to the channel up and down operation by operating the channel up and down keys on the control device 100.

In some embodiments, the control device 100 may be a mobile terminal 300. Such as: the control apparatus 100 may install various applications that control the display apparatus 200 according to user demands.

In some embodiments, as shown in fig. 1, a mobile terminal 300 or other intelligent electronic device may function similar to the control device 100 after installing an application that manipulates the display device 200. Such as: the user may implement the functions of controlling the physical keys of the device 100 by installing applications, various function keys or virtual buttons of a graphical user interface available on the mobile terminal 300 or other intelligent electronic device.

The second controller 101 comprises a second processor and RAM and ROM, a second communication interface 103 and a communication bus. The second controller 101 is used to control the operation of the control device 100, as well as the communication cooperation between the internal components and the external and internal data processing functions.

The second communication interface 103 enables communication of control signals and data signals with the display apparatus 200 under the control of the second controller 101. Such as: the received user input signal is transmitted to the display apparatus 200. The second communication interface 103 may include at least one of a WiFi chip, a bluetooth module, an NFC module, and other near field communication modules.

A second user input/output interface, wherein the input interface comprises at least one of a microphone, a touch pad, a sensor, a key, and other input interfaces. Such as: the user can realize a user instruction input function through actions such as voice, touch, gesture, pressing, and the like, and the input interface converts the received analog signal into a digital signal and converts the digital signal into a corresponding instruction signal, and sends the instruction signal to the display device 200.

The output interface includes an interface that transmits the received user instruction to the display apparatus 200. In some embodiments, the interface may be an infrared interface or a radio frequency interface. Such as: when the infrared signal interface is used, the user input instruction needs to be converted into an infrared control signal according to an infrared control protocol, and the infrared control signal is sent to the display device 200 through the infrared sending module. The following steps are repeated: when the rf signal interface is used, a user input command needs to be converted into a digital signal, and then the digital signal is modulated according to the rf control signal modulation protocol and then transmitted to the display device 200 through the rf transmitting terminal.

In some embodiments, the control device 100 comprises at least one of the second communication interface 103 and an output interface. The control device 100 is configured with a second communication interface 103, such as: the WiFi, bluetooth, NFC, etc. modules may transmit the user input command to the display device 200 through the WiFi protocol, or the bluetooth protocol, or the NFC protocol code.

A second memory for storing various operation programs, data and applications for driving and controlling the control apparatus 200 under the control of the second controller 101. And the second memory can store various control signal instructions input by a user.

And a second power supply for providing operational power support for the elements of the control device 100 under the control of the second controller 101. A battery and associated control circuitry.

In some embodiments, the system may include a Kernel (Kernel), a command parser (shell), a file system, and an application program. The kernel, shell, and file system together make up the basic operating system structure that allows users to manage files, run programs, and use the system. After power-on, the kernel is started, kernel space is activated, hardware is abstracted, hardware parameters are initialized, and virtual memory, a scheduler, signals and interprocess communication (IPC) are operated and maintained. And after the kernel is started, loading the Shell and the user application program. The application program is compiled into machine code after being started, and a process is formed.

A software system configuration diagram of the display device 200 in the exemplary embodiment is exemplarily shown in fig. 4. Referring to fig. 4, in some embodiments, the software system is divided into four layers, from top to bottom: an Application (Applications) layer (abbreviated as "Application layer 401") 401, an Application Framework (Application Framework) layer (abbreviated as "Framework layer 402") 402, an Android run (Android runtime) layer and system library layer (abbreviated as "run layer") 403, and a kernel layer 404.

In some embodiments, software programs and/or modules corresponding to the software architecture of fig. 4 are stored in the first memory or the second memory shown in fig. 2 or 3.

On the basis of the above embodiment, the following describes a communication method provided by the present application with reference to the embodiment of fig. 5. The communication method shown in fig. 5 may be applied to a communication system including a mobile terminal, a display device, and a server.

Fig. 5 schematically shows a first flowchart of a communication method. As shown in fig. 5, the communication method provided in this embodiment includes:

s501: and the mobile terminal sends a deletion instruction to the display equipment, wherein the deletion instruction comprises a file identifier.

In some embodiments, the mobile terminal may be a smartphone, a tablet, a television, a desktop computer, etc., and the display device may be a television.

In some embodiments, a Network Attached Storage (NAS) is disposed in the display device, the NAS may store a plurality of files, each file has a corresponding file identifier, and when the mobile terminal needs to delete a certain file in the NAS, a deletion instruction may be sent to the display device.

In some embodiments, the mobile terminal and the display device may be located in a local area network or a wide area network. When the mobile terminal can directly send the deletion instruction to the display device, the mobile terminal and the display device are located in the local area network.

In some embodiments, the file identity is an identity of a file that the mobile terminal needs to delete from the NAS.

S502: and the display equipment deletes the file corresponding to the file identifier according to the file identifier.

In some embodiments, the display device may determine the file corresponding to the file identifier according to the file identifier, and then delete the file corresponding to the file identifier.

S503: the display equipment transmits a deleting instruction to the server, wherein the deleting instruction is used for enabling the server to suspend deleting the file corresponding to the file identifier when the target transmission thread corresponding to the file identifier exists, and the file corresponding to the file identifier is deleted when the target transmission thread corresponding to the file identifier does not exist.

S504: the server judges whether the file transmission record has a target transmission thread corresponding to the file identifier.

If so, then S505 is executed.

If not, go to step S506.

In some embodiments, a file transfer record is stored in the server, the file transfer record being used to record transfer information for uploading a file to the display device by the mobile terminal or downloading a file from the display device by the mobile terminal. The file transmission record comprises a plurality of file identifications and a transmission thread mapping relation corresponding to each file identification.

In some embodiments, the targeted transfer thread may be the transfer thread at the time the corresponding file is identified for uploading or downloading.

S505: and the server suspends deleting the file corresponding to the file identifier.

In this embodiment, the file corresponding to the file identifier is stored in the server.

In some embodiments, after suspending deleting the file corresponding to the file identifier, S504 may be executed again after every preset time period.

In some embodiments, the preset time period may be 30 seconds, 1 minute, or the like. Specifically, the present application does not limit this.

S506: and the server deletes the file corresponding to the file identifier.

In some embodiments, the file transfer record may include: the transmission identifier is used for indicating whether the target transmission thread is finished or not; the server can determine whether the file corresponding to the file identification is being used according to the transmission identification;

if it is being used, go to S505;

if not, S506 is executed.

In some embodiments, the transmission identifier may be 1 or 0, where 1 is used to indicate that the file corresponding to the file identifier is being used and 0 is used to indicate that the file corresponding to the file identifier is not being used.

In some embodiments, the transmission identifier may be YES or NO, where YES is used to indicate that the file corresponding to the file identifier is being used, and NO is used to indicate that the file corresponding to the file identifier is not being used.

The communication method provided by the embodiment comprises the following steps: the mobile terminal sends a deletion instruction to the display device, wherein the deletion instruction comprises a file identifier; the display equipment deletes the file corresponding to the file identification according to the file identification; the display equipment transmits a deleting instruction to the server, wherein the deleting instruction is used for enabling the server to suspend deleting the file corresponding to the file identifier when the target transmission thread corresponding to the file identifier exists, and deleting the file corresponding to the file identifier when the target transmission thread corresponding to the file identifier does not exist; the server judges whether a target transmission thread corresponding to the file identification exists in the file transmission record; if yes, the server suspends deletion of the file corresponding to the file identifier; and if not, the server deletes the file corresponding to the file identifier. In the method, if a target transmission thread corresponding to the file identifier exists in the file transmission record, the file corresponding to the file identifier is temporarily deleted; if the file transmission record does not have the target transmission thread corresponding to the file identifier, the file corresponding to the file identifier is temporarily deleted, so that the information of the mobile terminal can be prevented from being revealed, and the privacy safety of the user is improved.

Based on the above embodiment, the following describes the communication method provided by the present application with reference to fig. 6, and the communication method shown in fig. 6 can be applied to a communication system including a mobile terminal, a display device, a server, and a cloud device.

Fig. 6 schematically shows a second flowchart of the communication method. As shown in fig. 6, the communication method provided in this embodiment includes:

s601: and the mobile terminal sends a deletion instruction to the display equipment, wherein the deletion instruction comprises a file identifier.

S602: and the display equipment deletes the file corresponding to the file identifier according to the file identifier.

S603: the display equipment transmits a deleting instruction to the server, wherein the deleting instruction is used for enabling the server to suspend deleting the file corresponding to the file identifier when the target transmission thread corresponding to the file identifier exists, and the file corresponding to the file identifier is deleted when the target transmission thread corresponding to the file identifier does not exist.

S604: the server judges whether the file transmission record has a target transmission thread corresponding to the file identifier.

If not, then S605-S607 are executed.

If so, S608-S613 are performed.

S605: and the server deletes the file corresponding to the file identifier.

In some embodiments, after the server performs S605, S610 and S611 may be sequentially performed, so that the cloud device deletes the file corresponding to the file identifier according to the deletion instruction

S606: and the server sends deletion information to the display equipment, wherein the deletion information is used for indicating that the file corresponding to the file identifier in the server is deleted.

S607: and the display equipment forwards the deletion information to the mobile terminal.

In some embodiments, the server may send the deletion information directly to the mobile terminal. For example, when the display device and the mobile terminal are in a wide area network, the server may directly transmit the deletion information to the mobile terminal.

S608: and the server suspends deleting the file corresponding to the file identifier.

S609: the server judges whether the target transmission thread is finished.

If so, S610-S611 are performed.

If not, go to S612-S613.

In some embodiments, the file transfer record further comprises: and the file identifier and the transmission identifier of the target transmission thread corresponding to the file identifier are in a mapping relation, wherein the transmission identifier is used for indicating whether the target transmission thread is ended, and whether the target transmission thread is ended can be determined according to the transmission identifier of the target transmission thread.

In some embodiments, the transmission flag may be 1 or 0, where 1 is used to indicate that the target transmission thread is not finished and 0 is used to indicate that the target transmission thread is finished.

S610: after deleting the file corresponding to the file identifier, the server sends a deletion instruction to the cloud device, wherein the deletion instruction is used for instructing the cloud device to delete the file corresponding to the file identifier.

S611: and the cloud equipment deletes the file corresponding to the file identification according to the deletion instruction.

In some embodiments, after deleting the file corresponding to the file identifier, the cloud device may send deletion information to the server, so that the server sends deletion information to the display device and/or the mobile terminal, where the deletion information may be used to indicate that the file corresponding to the file identifier in the cloud device is deleted.

S612: the server sends display information to the display device, wherein the display information is used for indicating that the file corresponding to the file identification in the server is being used.

S613: and the display equipment forwards the display information to the mobile terminal.

In some embodiments, the server may send the display information directly to the mobile terminal. For example, when the display device and the mobile terminal are in a wide area network, the server may directly transmit the display information to the mobile terminal.

In some embodiments, the mobile terminal may display an information display prompt for alerting the user that the file corresponding to the file identification is being used.

Based on the above embodiments, the following further describes the communication method provided by the present application with reference to fig. 7, where the communication method shown in fig. 7 may include a mobile terminal, a display device, a server, a cloud device, and a forwarding server in a communication system.

Fig. 7 schematically shows a third flowchart of the communication method. As shown in fig. 7, the communication method provided in this embodiment includes:

s701: and the mobile terminal sends a deletion instruction to the forwarding server, wherein the deletion instruction comprises a file identifier.

S702: and the forwarding server forwards the deletion instruction to the display equipment.

S703: and the display equipment deletes the file corresponding to the file identifier according to the file identifier.

S704: the display equipment transmits a deleting instruction to the server, wherein the deleting instruction is used for enabling the server to suspend deleting the file corresponding to the file identifier when the target transmission thread corresponding to the file identifier exists, and the file corresponding to the file identifier is deleted when the target transmission thread corresponding to the file identifier does not exist.

S705: the server judges whether the file transmission record has a target transmission thread corresponding to the file identifier.

If not, S706-S708 are performed.

If so, S709-S714 are performed.

S706: and the server deletes the file corresponding to the file identifier.

In some embodiments, after the server performs S706, S711 and S712 may be sequentially performed.

S707: and the server sends deletion information to the forwarding server, wherein the deletion information is used for indicating that the file corresponding to the file identifier in the server is deleted.

In some embodiments, the server may also send deletion information to the display device.

S708: and the forwarding server forwards the deletion information to the mobile terminal.

S709: and the server suspends deleting the file corresponding to the file identifier.

S710: the server judges whether the target transmission thread is finished.

If so, S711-S712 are performed.

If not, S713-S714 are performed.

S711: after deleting the file corresponding to the file identifier, the server sends a deletion instruction to the cloud device, wherein the deletion instruction is used for instructing the cloud device to delete the file corresponding to the file identifier.

S712: and the cloud equipment deletes the file corresponding to the file identification according to the deletion instruction.

In some embodiments, after deleting the file corresponding to the file identifier, the cloud device may further send deletion information to the forwarding server, so that the forwarding server sends the deletion information to the display device and/or the mobile terminal, where the deletion information may be used to indicate that the file corresponding to the file identifier in the cloud device is deleted.

S713: the server sends display information to the forwarding server, wherein the display information is used for indicating that the file corresponding to the file identification in the server is being used.

S714: and the forwarding server forwards the display information to the mobile terminal.

In the embodiment of fig. 7, the file corresponding to the file identifier in the cloud device and the server can be deleted, so that the cloud device and the server are prevented from revealing the information of the mobile terminal, and the privacy safety of the user is improved.

Fig. 8 shows an exemplary flowchart illustration four of the communication method. As shown in fig. 8, the communication method provided in this embodiment includes:

s801: and the mobile terminal sends a deletion instruction to the forwarding server, wherein the deletion instruction comprises a user identifier and a file identifier.

S802: and the forwarding server forwards the deletion instruction to the display equipment.

S803: and after the display equipment determines that the mobile terminal has the deletion authority according to the user identification, forwarding a deletion instruction to the server.

In some embodiments, the display device stores a user authority list, the user authority list stores a plurality of user identifications, and the user identifications in the user authority list have deletion authority. In application, after receiving a user identifier, searching in a user authority list to determine whether the user identifier exists, if so, the mobile terminal corresponding to the user identifier has a deletion authority; and if not, the mobile terminal corresponding to the user identifier does not have the deletion authority.

In some embodiments, the display device stores a user permission list, the user permission list stores a mapping relationship between a plurality of user identifiers and a permission identifier corresponding to each user identifier, and after the permission identifier corresponding to the user identifier is determined according to the user identifier in the user permission list, whether the mobile terminal has the deletion permission or not can be determined according to the permission identifier. In some embodiments, the permission identifier may be 00 or 11, where 11 indicates that the mobile terminal has the deletion permission and 00 indicates that the mobile terminal does not have the deletion permission.

S804: the server judges whether other user identifications except the user identification corresponding to the file identification exist in at least one user identification corresponding to the file identification in the file list.

The file list is stored in the server and comprises a mapping relation between the file identification and at least one user identification corresponding to the file identification.

If not, S805-S807 are performed.

If so, then S808 is performed.

S805: and the server deletes the mapping relation between the file identification and the user identification corresponding to the file identification.

In some embodiments, the file list includes a plurality of file identifications and at least one user identification corresponding to each file. In practical applications, the server may maintain the file list as follows.

For example, when the mobile terminals corresponding to the user identifier 1, the user identifier 2, and the user identifier 3 respectively upload the file a having the file identifier a to the display device, the format of the file list is as shown in table 1 below.

TABLE 1

When the mobile terminal corresponding to the user identifier 1 needs to delete the mapping relationship between the file identifier a and the user identifier 1, the file list further includes other user identifiers (a user identifier 2 and a user identifier 3), so that only the user identifier 1 can be deleted, and the mapping relationship between the file identifier a and the user identifier 1 can be deleted. After deleting the mapping relationship between the file identifier a and the user identifier 1, updating the table 1 to obtain a file list having a format as shown in table 2 below.

TABLE 2

On the basis of table 2, when the mobile terminal corresponding to the user identifier 2 needs to delete the mapping relationship between the file identifier a and the user identifier 2, since the file list further includes other user identifiers (user identifiers 3), only the user identifier 2 can be deleted, thereby realizing deletion of the mapping relationship between the file identifier a and the user identifier 2. After deleting the mapping relationship between the file identifier a and the user identifier 2, updating the table 2 to obtain a file list having a format as shown in table 3 below.

TABLE 3

File identification a

User identification 3

On the basis of table 3, when the mobile terminal corresponding to the user identifier 3 needs to delete the mapping relationship between the file identifier a and the user identifier 3, the file identifier a and the user identifier 3 can be deleted because there is no other user identifier in the file list, thereby realizing deletion of the mapping relationship between the file identifier a and the user identifier 3.

S806: and the server sends a deletion instruction to the cloud equipment, wherein the deletion instruction is used for instructing the cloud equipment to delete the file corresponding to the file identifier.

S807: and the cloud equipment deletes the file corresponding to the file identification according to the deletion instruction.

In some embodiments, after the cloud device performs S807, the cloud device may send deletion information to the forwarding server, where the deletion information is used to indicate that the file corresponding to the file identifier has been deleted.

In some embodiments, after the forwarding server receives the deletion information, the deletion information may be forwarded to the mobile terminal.

S808: and the server deletes the mapping relation between the file identification and the user identification corresponding to the file identification.

In some embodiments, after the server performs S808, deletion information may be sent to the mobile terminal, where the deletion information is used to indicate that the mapping relationship between the file identifier and the user identifier corresponding to the file identifier has been deleted.

In the above embodiment, the server may delete the mapping relationship between the file identifier and the user identifier corresponding to the file identifier, so that the hidden security of the user is improved, and other devices are prevented from acquiring the user identifier through the server. Furthermore, other devices can be prevented from acquiring file information in the mobile terminal or the display device according to the user identification, and the safety of the mobile terminal and the display device is improved.

Based on the above embodiment, the following describes the communication method provided by the present application with reference to fig. 9, where the communication method shown in fig. 9 can be applied to a communication system including a mobile terminal, a display device, a server, a cloud device, and a forwarding server.

Fig. 9 shows an exemplary flow chart diagram five of the communication method. As shown in fig. 9, the communication method provided in this embodiment includes:

s901: and the mobile terminal sends a deletion instruction to the forwarding server, wherein the deletion instruction comprises the user identification.

S902: and the forwarding server forwards the deletion instruction to the display equipment.

S903: and after the display equipment determines that the mobile terminal has the deletion authority according to the user identification, forwarding a deletion instruction to the server.

S904: the server judges whether other user identifications except the user identification exist in at least one user identification corresponding to the file identification corresponding to the user identification in the file list.

If not, then S905-S907 are performed.

If so, then S908 is performed.

S905: and the server deletes the mapping relation between the user identifier in the file list and the file identifier corresponding to the user identifier.

S906: the server sends a deletion instruction to the cloud equipment, the deletion instruction is used for instructing the cloud equipment to delete the file corresponding to the user identification, and the file corresponding to the user identification is stored in the cloud equipment.

In some embodiments, the deletion indication may include a file identification. Specifically, the deletion instruction may further include a file identifier, and after the server receives the deletion instruction, the deletion instruction may be determined according to the file identifier.

S907: and the cloud equipment deletes the file corresponding to the file identification according to the deletion instruction.

In some embodiments, after the cloud device executes S907, delete information may be further sent to the forwarding server, where the delete information is used to indicate that the file corresponding to the file identifier has been deleted.

In some embodiments, the forwarding server also forwards the deletion information to the mobile terminal after receiving the deletion information.

S908: and the server deletes the mapping relation between the user identifier in the file list and the file identifier corresponding to the user identifier.

In some embodiments, after the server executes S908, deletion information may be sent to the mobile terminal, where the deletion information is used to indicate that the mapping relationship between the user identifier and the file identifier corresponding to the user identifier has been deleted.

In the embodiment, the server may delete the mapping relationship between the user identifier and the file identifier corresponding to the user identifier, so that the hidden security of the user is improved, and other devices are prevented from acquiring the user identifier through the server. Furthermore, other devices can be prevented from acquiring information in the mobile terminal or the display device according to the user identifier and/or the file identifier, and the safety of the mobile terminal and the display device is improved.

The present application provides a server comprising: a processor, wherein the processor is configured to perform: receiving a deleting instruction sent by display equipment, wherein the deleting instruction comprises a file identifier; judging whether a target transmission thread corresponding to the file identification exists in the file transmission record; if yes, suspending deletion of the file corresponding to the file identifier; and if not, deleting the file corresponding to the file identifier.

In some embodiments, the deletion instruction includes a user identifier, a file corresponding to the file identifier is stored in the cloud device, a file list is stored in the server, and the file list includes a mapping relationship between the file identifier and at least one user identifier corresponding to the file identifier; the processor is further configured to perform: judging whether other user identifications except the user identification exist in at least one user identification corresponding to the file identification in the file list; if the file identifier does not exist, deleting the mapping relation between the file identifier and the user identifier corresponding to the file identifier, and sending a deletion instruction to the cloud equipment, wherein the deletion instruction is used for instructing the cloud equipment to delete the file corresponding to the file identifier; and if so, deleting the mapping relation between the file identification and the user identification corresponding to the file identification.

In some embodiments, after suspending deletion of the file corresponding to the file identification; the processor is further configured to perform: and if the target transmission thread is finished, sending a deletion instruction to the cloud equipment, wherein the deletion instruction is used for instructing the cloud equipment to delete the file corresponding to the file identifier.

In some embodiments, after suspending deletion of the file corresponding to the file identification; the processor is further configured to perform: if the target transmission thread is not finished, sending display information to the display equipment, and enabling the display equipment to forward the display information to the mobile terminal; or sending display information to the forwarding server to enable the forwarding server to forward the display information to the mobile terminal, wherein the display information is used for indicating that the file corresponding to the file identifier in the server is being used.

In some embodiments, after deleting the file identifies the corresponding file; the processor is further configured to perform: sending deletion information to the display equipment, and enabling the display equipment to forward the deletion information to the mobile terminal; or sending deletion information to the forwarding server to enable the forwarding server to forward the deletion information to the mobile terminal, wherein the deletion information is used for indicating that the file corresponding to the file identifier in the server is deleted.

The present application provides another server, in which a file list is stored, where the file list includes a mapping relationship between a file identifier and at least one user identifier corresponding to the file identifier, and the method includes: a processor, wherein the processor is configured to perform: receiving a deleting instruction sent by display equipment, wherein the deleting instruction comprises a user identifier; judging whether other user identifications except the user identification exist in at least one user identification corresponding to the file identification corresponding to the user identification in the file list; if the file does not exist, deleting the mapping relation between the user identifier in the file list and the file identifier corresponding to the user identifier, sending a deletion instruction to the cloud equipment, wherein the deletion instruction is used for instructing the cloud equipment to delete the file corresponding to the user identifier, and the file corresponding to the user identifier is stored in the cloud equipment; and if so, deleting the mapping relation between the user identifier in the file list and the file identifier corresponding to the user identifier.

In some embodiments, the deletion instruction includes a file identifier, a file transmission record is stored in the server, and the file transmission record includes a transmission thread corresponding to at least one file identifier; the processor is further configured to perform: judging whether a transmission thread corresponding to the file identifier exists in the transmission threads corresponding to the at least one file identifier; if yes, suspending deletion of the file corresponding to the file identifier; and if not, deleting the file corresponding to the file identifier.

The present application provides another display device, comprising: a display, a network attached memory, and a processor, wherein the display is configured to display a user interface; the network attached storage is used for storing files; the processor is used for executing:

In some embodiments, after forwarding the delete instruction to the server; the processor is further configured to perform: and receiving display information sent by the server, and forwarding the display information to the mobile terminal, wherein the display information is used for indicating that the file corresponding to the file identifier in the server is being used.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the embodiments of the present application, and are not limited thereto; although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the embodiments of the present application.

Claims

1. A server, comprising: a processor for, among other things,

the processor is configured to perform:

receiving a deletion instruction sent by display equipment, wherein the deletion instruction comprises a file identifier;

judging whether a file transmission record has a target transmission thread corresponding to the file identifier;

if yes, suspending deletion of the file corresponding to the file identifier;

and if not, deleting the file corresponding to the file identifier.

2. The server according to claim 1, wherein the deletion instruction includes a user identifier, a file corresponding to the file identifier is stored in a cloud device, and a file list is stored in the server and includes a mapping relationship between the file identifier and at least one user identifier corresponding to the file identifier; the processor is further configured to perform:

judging whether other user identifications except the user identification exist in at least one user identification corresponding to the file identification in the file list;

if the file identifier does not exist, deleting the mapping relation between the file identifier and the user identifier corresponding to the file identifier, and sending a deletion instruction to the cloud device, wherein the deletion instruction is used for instructing the cloud device to delete the file corresponding to the file identifier;

and if so, deleting the mapping relation between the file identification and the user identification corresponding to the file identification.

3. The apparatus according to claim 1, wherein after suspending deletion of the file corresponding to the file identifier; the processor is further configured to perform:

and if the target transmission thread is finished, sending a deletion instruction to the cloud end equipment, wherein the deletion instruction is used for instructing the cloud end equipment to delete the file corresponding to the file identifier.

4. The apparatus according to claim 1, wherein after suspending deletion of the file corresponding to the file identifier; the processor is further configured to perform:

if the target transmission thread is not finished, sending display information to the display equipment, and enabling the display equipment to forward the display information to the mobile terminal; or sending display information to a forwarding server, so that the forwarding server forwards the display information to the mobile terminal, where the display information is used to indicate that the file corresponding to the file identifier in the server is being used.

5. The apparatus according to any one of claims 1 to 4, wherein after deleting the file corresponding to the file identifier; the processor is further configured to perform:

sending deletion information to the display equipment, and enabling the display equipment to forward the deletion information to the mobile terminal; or sending deletion information to a forwarding server to enable the forwarding server to forward the deletion information to the mobile terminal, wherein the deletion information is used for indicating that the file corresponding to the file identifier in the server is deleted.

6. A server is characterized in that a file list is stored in the server, the file list comprises a mapping relation between a file identifier and at least one user identifier corresponding to the file identifier, and the method comprises the following steps: a processor for, among other things,

the processor is configured to perform:

if the file does not exist, deleting the mapping relation between the user identification and the file identification corresponding to the user identification in the file list, and sending a deletion instruction to the cloud end equipment, wherein the deletion instruction is used for instructing the cloud end equipment to delete the file corresponding to the user identification, and the file corresponding to the user identification is stored in the cloud end equipment;

and if so, deleting the mapping relation between the user identification in the file list and the file identification corresponding to the user identification.

7. The apparatus according to claim 6, wherein the delete instruction includes a file identifier, and a file transfer record is stored in the server, and the file transfer record includes a transfer thread corresponding to at least one file identifier; the processor is further configured to perform:

judging whether a transmission thread corresponding to the file identifier exists in transmission threads corresponding to the at least one file identifier;

if yes, suspending deletion of the file corresponding to the file identifier;

and if not, deleting the file corresponding to the file identifier.

8. A display device, comprising: a display, a network attached memory, and a processor, wherein,

the display is used for displaying a user interface;

the network attached storage is used for storing files;

the processor is configured to perform:

and forwarding the deletion instruction to a server, wherein the deletion instruction is used for enabling the server to suspend deleting the file corresponding to the file identifier when the target transmission thread corresponding to the file identifier exists, and deleting the file corresponding to the file identifier when the target transmission thread corresponding to the file identifier does not exist.

9. The display device according to claim 8, wherein after forwarding the deletion instruction to a server; the processor is further configured to perform:

and receiving display information sent by the server, and forwarding the display information to the mobile terminal, wherein the display information is used for indicating that the file corresponding to the file identifier in the server is being used.

10. A communication method applied to a server includes:

judging whether a file transmission record has a target transmission thread which is in progress corresponding to the file identifier or not according to the file identifier;

if yes, suspending deletion of the file corresponding to the file identifier;

and if not, deleting the file corresponding to the file identifier.

11. A communication method is applied to a server, a file list is stored in the server, the file list comprises a mapping relation between a file identifier and at least one user identifier corresponding to the file identifier, and the communication method comprises the following steps:

12. A communication method is applied to a display device, and the method comprises the following steps: