CN114647628A - File acquisition method and device - Google Patents
File acquisition method and device Download PDFInfo
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- CN114647628A CN114647628A CN202011388924.5A CN202011388924A CN114647628A CN 114647628 A CN114647628 A CN 114647628A CN 202011388924 A CN202011388924 A CN 202011388924A CN 114647628 A CN114647628 A CN 114647628A
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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
- G06F16/176—Support for shared access to files; File sharing support
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- 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
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
Abstract
The application provides a file acquisition method and a device, wherein the file acquisition method is applied to a first terminal and comprises the following steps: establishing a communication connection with a second terminal; accessing a shared folder in the second terminal through the communication connection, wherein at least one file is cached in the shared folder; determining a target file in the at least one file; the target file is obtained and played, and the file obtaining method provided by the application can directly provide the content cached in the second terminal for the first terminal to read, does not influence the use of the second terminal, and improves the use experience of a user.
Description
Technical Field
The application relates to the technical field of internet, in particular to a file acquisition method. The application also relates to a file acquisition device, a computing device and a computer readable storage medium.
Background
With the development of internet technology, portable intelligent devices such as mobile phones and tablet computers have larger and larger storage capacity, and users usually cache files such as videos or audios in the intelligent devices in advance in order to obtain better viewing effects, so that the files can be conveniently viewed at any time.
When a user returns home and wants to play files through a large-screen device such as a television or a projector to obtain better viewing experience, a file cached in advance is usually opened in a mobile phone or a tablet computer and is projected to the television or the projector for playing in a screen projection mode, in the playing mode, the mobile phone needs to participate in playing, if operations such as fast forward or pause are needed, the operation needs to be carried out at a mobile phone end, in the screen projection process, the mobile phone cannot be used at some times, and the screen projection operation is very complex and not convenient enough.
Disclosure of Invention
In view of this, an embodiment of the present application provides a file acquiring method. The application also relates to a file acquisition device, a computing device and a computer readable storage medium, which are used for solving the problems that the operation is complex when the cache file is played by throwing a screen, other things can not be done by using a mobile phone and the user experience is not good in the prior art.
According to a first aspect of the embodiments of the present application, there is provided a file acquisition method, applied to a first terminal, including:
establishing a communication connection with a second terminal;
accessing a shared folder in the second terminal through the communication connection, wherein at least one file is cached in the shared folder;
determining a target file in the at least one file;
and acquiring and playing the target file.
According to a second aspect of the embodiments of the present application, there is provided a file acquiring apparatus, including:
a connection establishing module configured to establish a communication connection with a second terminal;
an access module configured to access a shared folder in the second terminal through the communication connection, wherein at least one file is cached in the shared folder;
a determination module configured to determine a target file among the at least one file;
and the acquisition module is configured to acquire and play the target file.
According to a third aspect of embodiments herein, there is provided a computing device comprising a memory, a processor and computer instructions stored on the memory and executable on the processor, the processor implementing the steps of the file retrieval method when executing the instructions.
According to a fourth aspect of embodiments of the present application, there is provided a computer-readable storage medium storing computer instructions which, when executed by a processor, implement the steps of the file retrieval method.
The file acquisition method is applied to a first terminal and establishes communication connection with a second terminal; accessing a shared folder in the second terminal through the communication connection, wherein at least one file is cached in the shared folder; determining a target file in the at least one file; the target file is obtained and played, the second terminal is used as distributed storage through the file obtaining method provided by the embodiment of the application, the first terminal can directly obtain the file cached in the second terminal through the connection of the first terminal and the second terminal, and then the file is directly read and played, so that the operation is simple and convenient, and other operations of the second terminal are not influenced.
Drawings
Fig. 1 is a flowchart of a file acquisition method according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a file acquisition method according to another embodiment of the present application;
fig. 3 is a processing flow diagram of a file acquisition method applied to a video scene cached by a television playing handset according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a file retrieving apparatus according to an embodiment of the present application;
fig. 5 is a block diagram of a computing device according to an embodiment of the present application.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of implementation in many different ways than those herein set forth and of similar import by those skilled in the art without departing from the spirit of this application and is therefore not limited to the specific implementations disclosed below.
The terminology used in the one or more embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the one or more embodiments of the present application. As used in one or more embodiments of the present application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used in one or more embodiments of the present application refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It will be understood that, although the terms first, second, etc. may be used herein in one or more embodiments of the present application to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, a first can also be referred to as a second and, similarly, a second can also be referred to as a first without departing from the scope of one or more embodiments of the present application. The word "if," as used herein, may be interpreted as "at … …" or "when … …" or "in response to a determination," depending on the context.
First, the noun terms to which one or more embodiments of the present application relate are explained.
A first terminal: the large-screen intelligent display equipment can be an intelligent television, a projector, a tablet personal computer and the like.
A second terminal: the mobile large-storage-capacity intelligent device comprises a mobile large-storage-capacity intelligent device body, a mobile large-storage-capacity intelligent device body and a mobile terminal.
In the present application, a file acquisition method is provided, and the present application relates to a file acquisition apparatus, a computing device, and a computer-readable storage medium, which are described in detail one by one in the following embodiments.
Fig. 1 shows a flowchart of a file obtaining method according to an embodiment of the present application, where the method is applied to a first terminal, and specifically includes the following steps:
step 102: and establishing a communication connection with the second terminal.
The first terminal provided by the embodiment of the application is a large-screen intelligent display device, such as an intelligent television, a projector, a tablet computer and the like, and a user can have better watching experience when watching programs by using the first terminal.
The second terminal is a mobile intelligent device with large storage capacity, such as a mobile phone, a tablet computer and the like, various types of files, such as videos, audios, pictures, books and the like, are cached in the second terminal in advance, and a user can directly browse and view the files cached in the second terminal by using the second terminal.
The first terminal and the second terminal can establish communication connection to access the shared folder of the second terminal if the second terminal is used as a streaming media server; the second terminal can also be set as an FTP Server (File Transfer Protocol Server, a computer providing File storage and access service on the Internet), the service is provided according to the FTP Protocol, and the first terminal can directly read the shared folder of the second terminal; the shared folder in the second terminal can also be provided to the first terminal as an NFS (Network File System), so that the first terminal can also directly read the folder shared by the second terminal; the second terminal can also be used as a storage partition of distributed storage to directly share the shared folder to the first terminal for use. In practical applications, there are many ways for the second terminal to share the shared folder with the first terminal, which is not limited in this application.
Optionally, the establishing a communication connection with the second terminal includes:
establishing communication connection with a second terminal through a local area network; or
And establishing a communication connection with the second terminal through the nested word service.
In practical application, the first terminal establishes a communication connection with the second terminal, that is, the communication connection with the second terminal can be established through the local area network, and the communication connection with the second terminal can also be established through the nested word service. The nested word is an abstraction of an endpoint for bidirectional communication between application processes on different hosts in a network, and one nested word is an endpoint for process communication on the network, and provides a mechanism for the application layer processes to exchange data by using a network protocol.
Specifically, establishing a communication connection with a second terminal through a local area network includes:
scanning equipment in a local area network to obtain an equipment list;
and selecting a second terminal in the equipment list, and establishing communication connection with the second terminal.
In a specific embodiment provided by the present application, it is explained by taking an example that a storage partition of a second terminal is shared as distributed storage and read by a first terminal through a distributed capability of the second terminal, specifically, the second terminal establishes a nested word service, and provides a service to the outside by taking a shared folder of the second terminal as a distributed file system, the first terminal scans whether an available distributed file system exists in a local area network through a distributed protocol, and if the second terminal is found, establishes a communication connection with the second terminal, a user can open the shared folder in the distributed file system in the first terminal, determine a file to be played in the distributed file system, and play the file on the first terminal.
Specifically, the establishing of the communication connection with the second terminal through the nested word service includes:
establishing a nested word service, receiving a connection request of a second terminal, and responding to the connection request to establish communication connection with the second terminal; or
And scanning the nested word service, and establishing communication connection with the second terminal through the nested word service created by the second terminal under the condition that the nested word service created by the second terminal is found.
In a specific embodiment provided by the present application, taking a second terminal as a shared file of a streaming media service as an example, the second terminal establishes a nested word service waiting connection, after the first terminal is started, the first terminal scans whether a nested word service exists, and after the nested word service established by the second terminal is scanned, the second terminal establishes a communication connection with the second terminal through the nested word service, at this time, a user can check a shared folder of the second terminal in the first terminal, obtain a file list in the shared folder, determine a file to be played in the file list, and play the file on the first terminal.
Step 104: and accessing a shared folder in the second terminal through the communication connection, wherein at least one file is cached in the shared folder.
After the first terminal and the second terminal are connected, the first terminal can access the shared folder of the second terminal, the second terminal caches at least one file in advance, such as a movie, a television play, a song, a vocal book, a music audio, an electronic book and the like, and the first terminal can browse the files cached in the second terminal through the shared folder of the second terminal.
In a specific embodiment provided by the present application, a user operates a first terminal, and can directly browse a shared folder of a second terminal on the first terminal, and movie a, movie B, drama C, song D, and the like are cached in the shared folder.
Step 106: a target file is determined among the at least one file.
And determining a file expected to be played in at least one file cached in the shared folder, wherein the target file is the file expected to be played by the user based on the file expected to be played by the user.
In a specific embodiment provided by the present application, following the above example, if the user desires to watch movie B, movie B is the target file.
Optionally, determining a target file in the at least one file includes:
acquiring a file list in a shared folder in the second terminal;
and receiving a selection instruction, and determining a target file in the file list in response to the selection instruction.
In practical application, a user can obtain a file list of a shared folder in a second terminal through a first terminal, namely, files shared in the second terminal can be displayed in the file list of the shared folder, the user selects a target file by browsing the file list and sends a selection instruction to the first terminal, and the first terminal receives the selection instruction sent by the user and determines the target file in the file list.
In a specific embodiment provided by the application, following the above example, a user browses a file list of a shared folder of a second terminal through a first terminal, and sends a selection instruction for selecting movie B to the first terminal, and after receiving the selection instruction, the first terminal determines that movie B is a target file in the file list in response to the selection instruction.
Step 108: and acquiring and playing the target file.
And the first terminal acquires the target file from the second terminal and plays the target file.
In a specific embodiment provided by the present application, following the above example, the user acquires and plays movie B from the shared folder of the second terminal through the first terminal.
Optionally, the method further includes:
receiving a control instruction sent by a user;
and controlling the target file in response to the control instruction.
In practical application, a user can directly send a control instruction to a first terminal, such as fast forward, fast backward, double-speed play, pause, end and the like, the first terminal responds to the control instruction to execute corresponding operation on the target file, and therefore the user can control the target file in the first terminal without controlling the target file through a second terminal, convenience and rapidness are achieved, and user experience is greatly improved.
In a specific embodiment provided by the present application, following the above example, the first terminal plays movie B, the user sends a control instruction for pausing the play to the first terminal, and the first terminal performs an operation of pausing the play on movie B in response to the control instruction for pausing the play.
The file acquisition method is applied to a first terminal and establishes communication connection with a second terminal; accessing a shared folder in the second terminal through the communication connection, wherein at least one file is cached in the shared folder; determining a target file in the at least one file; the target file is obtained and played, the second terminal is used as distributed storage through the file obtaining method provided by the embodiment of the application, the first terminal can directly obtain the file cached in the second terminal through the connection of the first terminal and the second terminal, and then the file is directly read and played, so that the operation is simple and convenient, and other operations of the second terminal are not influenced.
The following describes the file acquisition method further by taking an application of the file acquisition method provided by the present application in a video scene cached in a tv playing handset as an example, with reference to fig. 2 and fig. 3. Fig. 2 shows a schematic structural diagram of a file acquisition method provided in an embodiment of the present application, in which a mobile phone serves as a streaming media server to share videos, a television establishes a communication connection with the mobile phone, acquires a video list shared by the mobile phone, and selects a target video from the video list to play.
Fig. 3 shows a processing flow chart of a file acquisition method applied to a video scene cached by a television playing handset according to an embodiment of the present application, where the file acquisition method is applied to a television, and specifically includes the following steps:
step 302: and establishing communication connection with the mobile phone through the nested character service.
In the embodiment provided by the application, taking a mobile phone as a streaming media service to share a file as an example, a user opens a switch for sharing a video on the mobile phone, creates a nested character service waiting connection, opens a television, scans whether the nested character service exists or not by the television, finds the nested character service created by the mobile phone and establishes a connection with the nested character service, and at the moment, establishes a communication connection between the television and the mobile phone.
Step 304: and accessing a shared folder in the mobile phone through the communication connection, wherein a plurality of video files are cached in the shared folder of the mobile phone.
In the embodiment provided by the application, the user uses the television to access the shared folder in the mobile phone through the communication connection, and the movie E, the movie F, the movie G, 100 photos, 30 songs, 3 pieces of music audio and the like are cached in the shared folder of the mobile phone.
Step 306: and acquiring a video file list in a sharing folder of the mobile phone.
In the embodiment provided by the application, the user uses the television to access the shared folder shared by the mobile phone, that is, the video file list in the shared folder of the mobile phone is displayed in the television.
Step 308: and receiving a selection instruction sent by a user.
In the embodiment provided by the application, if the user wishes to watch movie F, the remote controller is controlled to select movie F and send a selection instruction, and the television receives the selection instruction sent by the user.
Step 310: determining a target video in the video file list in response to the selection instruction.
In the embodiment provided by the application, in response to the selection instruction, the television determines that the video to be played is movie F in the video file list, and then movie F is the target video.
Step 312: and acquiring and playing the target video.
In the embodiment provided by the application, the television acquires and plays the movie F from the mobile phone.
The file acquisition method is applied to a first terminal and establishes communication connection with a second terminal; accessing a shared folder in the second terminal through the communication connection, wherein at least one file is cached in the shared folder; determining a target file in the at least one file; the target file is obtained and played, the second terminal is used as distributed storage through the file obtaining method provided by the embodiment of the application, the first terminal can directly obtain the file cached in the second terminal through the connection of the first terminal and the second terminal, and then the file is directly read and played, so that the operation is simple and convenient, and other operations of the second terminal are not influenced.
Corresponding to the above method embodiment, the present application further provides a file obtaining apparatus embodiment, and fig. 4 shows a schematic structural diagram of a file obtaining apparatus provided in an embodiment of the present application. As shown in fig. 4, the apparatus includes:
a connection establishing module 402 configured to establish a communication connection with a second terminal;
an accessing module 404 configured to access a shared folder in the second terminal through the communication connection, wherein at least one file is cached in the shared folder;
a determining module 406 configured to determine a target file among the at least one file;
an obtaining module 408 configured to obtain and play the target file.
Optionally, the connection establishing module 402 is further configured to:
establishing communication connection with a second terminal through a local area network; or
And establishing a communication connection with the second terminal through the nested word service.
Optionally, the connection establishing module 402 is further configured to:
scanning equipment in a local area network to obtain an equipment list;
and selecting a second terminal in the equipment list, and establishing communication connection with the second terminal.
Optionally, the connection establishing module 402 is further configured to:
establishing a nested word service, receiving a connection request of a second terminal, and responding to the connection request to establish communication connection with the second terminal; or
And scanning the nested word service, and establishing communication connection with the second terminal through the nested word service created by the second terminal under the condition that the nested word service created by the second terminal is found.
Optionally, the determining module 406 is further configured to:
acquiring a file list in a shared folder in the second terminal;
and receiving a selection instruction, and determining a target file in the file list in response to the selection instruction.
Optionally, the apparatus further comprises:
the receiving module is configured to receive a control instruction sent by a user;
a response module configured to control the target file in response to the control instruction.
The file acquisition device is applied to a first terminal and establishes communication connection with a second terminal; accessing a shared folder in the second terminal through the communication connection, wherein at least one file is cached in the shared folder; determining a target file in the at least one file; the target file is obtained and played, the second terminal is used as distributed storage through the file obtaining device provided by the embodiment of the application, the first terminal can directly obtain the file cached in the second terminal through the connection of the first terminal and the second terminal, and then the file is directly read and played, so that the operation is simple and convenient, and other operations of the second terminal are not influenced.
The above is a schematic scheme of a file acquiring apparatus of the present embodiment. It should be noted that the technical solution of the file acquiring apparatus and the technical solution of the file acquiring method belong to the same concept, and details that are not described in detail in the technical solution of the file acquiring apparatus can be referred to the description of the technical solution of the file acquiring method.
Fig. 5 illustrates a block diagram of a computing device 500 provided according to an embodiment of the present application. The components of the computing device 500 include, but are not limited to, a memory 510 and a processor 520. Processor 520 is coupled to memory 510 via bus 530, and database 550 is used to store data.
Computing device 500 also includes access device 540, access device 540 enabling computing device 500 to communicate via one or more networks 560. Examples of such networks include the Public Switched Telephone Network (PSTN), a Local Area Network (LAN), a Wide Area Network (WAN), a Personal Area Network (PAN), or a combination of communication networks such as the internet. The access device 540 may include one or more of any type of network interface, e.g., a Network Interface Card (NIC), wired or wireless, such as an IEEE802.11 Wireless Local Area Network (WLAN) wireless interface, a worldwide interoperability for microwave access (Wi-MAX) interface, an ethernet interface, a Universal Serial Bus (USB) interface, a cellular network interface, a bluetooth interface, a Near Field Communication (NFC) interface, and so forth.
In one embodiment of the application, the above-described components of computing device 500 and other components not shown in FIG. 5 may also be connected to each other, such as by a bus. It should be understood that the block diagram of the computing device architecture shown in FIG. 5 is for purposes of example only and is not limiting as to the scope of the present application. Those skilled in the art may add or replace other components as desired.
Computing device 500 may be any type of stationary or mobile computing device, including a mobile computer or mobile computing device (e.g., tablet computer, personal digital assistant, laptop computer, notebook computer, netbook, etc.), mobile phone (e.g., smartphone), wearable computing device (e.g., smartwatch, smart glasses, etc.), or other type of mobile device, or a stationary computing device such as a desktop computer or PC. Computing device 500 may also be a mobile or stationary server.
Wherein, the processor 520 implements the steps of the file retrieving method when executing the instructions.
The above is an illustrative scheme of a computing device of the present embodiment. It should be noted that the technical solution of the computing device and the technical solution of the file obtaining method belong to the same concept, and details that are not described in detail in the technical solution of the computing device can be referred to the description of the technical solution of the file obtaining method.
An embodiment of the present application further provides a computer-readable storage medium, which stores computer instructions, and when the instructions are executed by a processor, the computer-readable storage medium implements the steps of the file acquiring method.
The above is an illustrative scheme of a computer-readable storage medium of the present embodiment. It should be noted that the technical solution of the storage medium belongs to the same concept as the technical solution of the file acquisition method, and details that are not described in detail in the technical solution of the storage medium can be referred to the description of the technical solution of the file acquisition method.
The foregoing description of specific embodiments of the present application has been presented. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
The computer instructions comprise computer program code which may be in the form of source code, object code, an executable file or some intermediate form, or the like. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U.S. disk, removable hard disk, magnetic diskette, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signal, telecommunications signal, and software distribution medium, etc. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
It should be noted that, for the sake of simplicity, the above-mentioned method embodiments are described as a series of acts or combinations, but those skilled in the art should understand that the present application is not limited by the described order of acts, as some steps may be performed in other orders or simultaneously according to the present application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
The preferred embodiments of the present application disclosed above are intended only to aid in the explanation of the application. Alternative embodiments are not exhaustive and do not limit the invention to the precise embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the application and its practical applications, to thereby enable others skilled in the art to best understand and utilize the application. The application is limited only by the claims and their full scope and equivalents.
Claims (9)
1. A file acquisition method is applied to a first terminal and comprises the following steps:
establishing a communication connection with a second terminal;
accessing a shared folder in the second terminal through the communication connection, wherein at least one file is cached in the shared folder;
determining a target file in the at least one file;
and acquiring and playing the target file.
2. The file acquisition method according to claim 1, wherein establishing a communication connection with a second terminal comprises:
establishing communication connection with a second terminal through a local area network; or
And establishing a communication connection with the second terminal through the nested word service.
3. The file acquisition method according to claim 2, wherein establishing a communication connection with the second terminal via the local area network comprises:
scanning equipment in a local area network to obtain an equipment list;
and selecting a second terminal in the equipment list, and establishing communication connection with the second terminal.
4. The file acquisition method according to claim 2, wherein establishing a communication connection with the second terminal through a nested word service comprises:
establishing a nested word service, receiving a connection request of a second terminal, and responding to the connection request to establish communication connection with the second terminal; or
And scanning the nested word service, and establishing communication connection with the second terminal through the nested word service created by the second terminal under the condition that the nested word service created by the second terminal is found.
5. The file acquisition method according to any one of claims 1 to 4, wherein determining a target file among the at least one file comprises:
acquiring a file list in a shared folder in the second terminal;
and receiving a selection instruction, and determining a target file in the file list in response to the selection instruction.
6. The file acquisition method according to any one of claims 1 to 4, characterized in that the method further comprises:
receiving a control instruction sent by a user;
and controlling the target file in response to the control instruction.
7. A file acquisition device is applied to a first terminal and comprises:
a connection establishing module configured to establish a communication connection with a second terminal;
an access module configured to access a shared folder in the second terminal through the communication connection, wherein at least one file is cached in the shared folder;
a determination module configured to determine a target file among the at least one file;
and the acquisition module is configured to acquire and play the target file.
8. A computing device comprising a memory, a processor, and computer instructions stored on the memory and executable on the processor, wherein the processor implements the steps of the method of any one of claims 1-6 when executing the instructions.
9. A computer-readable storage medium storing computer instructions, which when executed by a processor, perform the steps of the method of any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011388924.5A CN114647628A (en) | 2020-12-02 | 2020-12-02 | File acquisition method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011388924.5A CN114647628A (en) | 2020-12-02 | 2020-12-02 | File acquisition method and device |
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| CN114647628A true CN114647628A (en) | 2022-06-21 |
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| CN202011388924.5A Pending CN114647628A (en) | 2020-12-02 | 2020-12-02 | File acquisition method and device |
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