WO2021248352A1

WO2021248352A1 - Document presentation method, apparatus and system, and terminal

Info

Publication number: WO2021248352A1
Application number: PCT/CN2020/095315
Authority: WO
Inventors: 卢启伟; 陈铿帆
Original assignee: 深圳市鹰硕教育服务有限公司
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2021-12-16
Also published as: CN111837114A

Abstract

A document presentation method, apparatus and system, and a terminal. The method comprises: a first terminal establishing a communication connection with a smart pen (S101); acquiring document index information by using the smart pen to click any position or a specific position on a paper dot matrix document (S102); and according to the document index information, acquiring a corresponding electronic document for displaying (S103). By using the method, teaching or meetings are not limited by time, location, place, device, form, etc., and online and offline teaching or online and offline meetings are realized anytime and anywhere.

Description

Method, device, terminal and system for file presentation

Technical field

The present invention relates to the field of dot matrix technology, and in particular to a method, device, terminal and system for file presentation.

Background technique

With the advancement of science and technology, there are many different forms of teaching. According to whether teachers and students conduct face-to-face teaching, it can be divided into offline teaching and online teaching. Offline teaching mostly exists in the traditional K12 education situation, most of which use the traditional computer + projector mode, and a few pilot projects use electronic whiteboards + tablets for interactive teaching. Online teaching includes some counseling training, skill training, etc. Teachers and students establish connections through computers, notebooks, Pads and other intelligent terminals for video and audio communication. In the above teaching scenarios, teachers need to teach in accordance with the preset curriculum plan, which limits the freedom of teaching.

Summary of the invention

The purpose of the present invention is to provide a method, device, terminal and system for file presentation to solve the problems raised in the background art.

According to one aspect of the present invention, there is provided a file presentation method, the method including:

The first terminal establishes a communication connection with the smart pen;

Use smart pen to click any position or specific position of the paper dot matrix file to obtain file index information;

Obtain the corresponding electronic file according to the file index information and display it.

In an embodiment of the present invention, the paper dot matrix file is printed or printed after loading a dot matrix resource into an electronic file, and the dot matrix resource carries file index information.

In an embodiment of the present invention, the file content of the paper dot matrix file is encoded using a first dot matrix resource, and the file index information of the paper dot matrix file is encoded using a second dot matrix resource.

In an embodiment of the present invention, the document index information is set in the cover of the paper dot matrix document or the surrounding area that does not affect the display of the document content.

In an embodiment of the present invention, the method further includes:

Obtain the writing track information of the user using the smart pen on the paper dot matrix file;

Perform synchronous drawing at the corresponding position of the electronic file according to the writing track information;

The writing track information is transmitted to the second terminal, so that the electronic file displayed by the second terminal is synchronized with the first terminal.

In an embodiment of the present invention, the method further includes:

Establish a communication connection with at least one second terminal;

The file index information is transmitted to the second terminal, so that the second terminal obtains and displays the corresponding electronic file according to the file index information.

In an embodiment of the present invention, the method further includes:

Establish a communication connection with at least one second terminal;

Perform real-time recording of the screen content displaying the electronic file, and send the recorded screen content of the electronic file to the second terminal, so that the electronic file displayed by the second terminal is synchronized with the first terminal.

In an embodiment of the present invention, a method for file presentation is provided, and the method further includes:

Establish a communication connection with the first terminal;

Obtaining a corresponding dot matrix electronic file for display according to the file index information sent by the first terminal;

Receiving the writing track information transmitted by the first terminal;

Synchronous drawing is performed at the corresponding position of the electronic file according to the writing track information.

In an embodiment of the present invention, a device for file presentation is provided, and the device includes:

The first connection module is used to establish a communication connection with the smart pen;

The information acquisition module is used to click any position or specific position of the paper dot matrix file to obtain the file index information through the smart pen;

The file presentation module is used to obtain corresponding electronic files for display according to the file index information.

In an embodiment of the present invention, the device is used to implement the above-mentioned file presentation method.

In an embodiment of the present invention, an intelligent terminal is provided, and the intelligent terminal includes the above-mentioned device.

In an embodiment of the present invention, a file presentation system is provided, including:

A first terminal, where the first terminal is the aforementioned smart terminal;

The smart pen establishes a communication connection with the first terminal, obtains the file index information obtained by the user by clicking on any position or specific position of the paper dot matrix file through the smart pen, and sends the file index information to the first terminal; and obtains the user Use the writing track information of the smart pen on the paper dot matrix file to send the writing track information to the first terminal;

A paper dot matrix file is printed or printed after loading a dot matrix resource into an electronic file, and the dot matrix resource carries file index information -.

In an embodiment of the present invention, the system further includes:

At least one second terminal establishes a communication connection with the first terminal; obtains the corresponding dot matrix electronic file for display according to the file index information sent by the first terminal, receives the writing track information transmitted by the first terminal; according to the writing track The information is drawn synchronously in the corresponding position of the electronic file.

In an embodiment of the present invention, the system further includes:

At least one second terminal establishes a communication connection with the first terminal; receives the screen content of the electronic file recorded by the first terminal, and displays the screen content of the electronic file.

In an embodiment of the present invention, a computer-readable storage medium is provided, and a computer program is stored thereon, and the computer program is executed by a processor to realize the file presentation method described in any one of the above items.

Implementing the embodiments of the present invention will have the following beneficial effects:

In the embodiment of the present invention, the smart terminal establishes a connection with the smart pen, clicks on the paper dot matrix file printed with the dot matrix code through the smart pen to obtain file index information, and obtains the electronic file corresponding to the paper dot matrix file through the file index information Demonstrates, so that teaching or meetings are not restricted by time, location, place, equipment, format, etc., and realize online and offline teaching or online and offline meetings anytime, anywhere.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

in:

FIG. 1 is a flowchart of a file presentation method provided by Embodiment 1 of the present invention;

2 is a flowchart of a file presentation method provided by Embodiment 2 of the present invention;

FIG. 3 is a flowchart of a file presentation method provided by Embodiment 3 of the present invention;

4 is a flowchart of a file presentation method provided by Embodiment 4 of the present invention;

FIG. 5 is a flowchart of a file presentation method provided by Embodiment 5 of the present invention;

6 is a schematic diagram of a paper dot matrix file provided by an embodiment of the present invention;

Figure 7 is a structural diagram of a file presentation device provided by an embodiment of the present invention;

Fig. 8 is a structural diagram of a file presentation system provided by an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

As shown in FIG. 1, it is a flow chart of a file presentation method provided by Embodiment 1 of the present invention, which includes the following steps:

Step S101: The first terminal establishes a communication connection with the smart pen.

Before the user operates the smart pen to write on the paper dot matrix file, the smart terminal establishes a communication connection with the smart pen, including wired connection and wireless connection. Preferably, a wireless connection mode is adopted. The wireless connection mode includes but is not limited to Bluetooth, near field communication (NFC), wireless local area network (WLAN), ZigBee, infrared data association (IrDA), Wi-Fi direct connection. In practical applications, the smart pen and the smart terminal preferentially use Bluetooth for wireless connection. When the smart terminal and the smart pen are connected for the first time, the smart terminal turns on Bluetooth to scan all nearby Bluetooth devices, and the scan results are filtered according to the preset device type and device name, and the eligible devices are displayed in the list. The mac address of the pen selects the corresponding device in the list to connect. In view of the fact that there are many Bluetooth pairing and connection technologies in the prior art, the present invention will not be repeated here.

In step S102, click any position or a specific position of the paper dot matrix file with a smart pen to obtain file index information.

Paper dot matrix files are printed or printed by electronic files loaded with dot matrix resources. In addition to the content of the file, the paper dot matrix file in the present invention also carries file index information. The file index information is an ID used to uniquely locate an electronic file. Those skilled in the art know that dot matrix resources are binary data represented by dot patterns. The smart pen can obtain a string of binary data by photographing and analyzing the dot patterns on the paper dot matrix file. Each of the binary data The position book can be defined according to user needs. For example, for a dot matrix data block that can store 48-bit binary data, define 0-7 bits as Y-axis coordinates, 8-15 bits as X-axis coordinates, 16-25 bits as page number information, and 26-29 bits Defined as a category, 30-41 bits are defined as book numbers, and 42-47 bits are used for parity checking, fault-tolerant processing, etc.

In an embodiment of the present invention, the file content and file index information of the paper dot matrix file are encoded using the same dot matrix resource. The file index information is carried in each dot matrix data block of the dot matrix resource that encodes the content of the file (as shown in FIG. 6a), and the user can click any position of the paper dot matrix file to obtain the file index information. For example, in the aforementioned dot matrix resource, 26-41 bits of data are directly used as file index information, or as a key value, and the smart terminal can query the file index information according to the key value.

In an embodiment of the present invention, the file content of the paper dot matrix file is encoded by the first dot matrix resource, the file index information of the paper dot matrix file is encoded by the second dot matrix resource, and the file index information is set In the cover of the paper dot matrix file or the surrounding area that does not affect the display of the file content. As shown in Figure 6b, the file index information scanning area is set below the file content. In this way, the entire code segment of the dot matrix encoding of the file index information can be used to represent the file index information except for some bit segments for retention and fault tolerance. Relatively speaking, this method is more flexible and can meet various needs without being restricted by the size of the lattice resources.

Step S103: Obtain and display the corresponding electronic file according to the file index information.

It is understandable that the user has used the smart terminal to edit the electronic file in advance. The electronic file can be in printable file formats such as word, excel, pdf, ppt, jpg, etc. After the editing is completed, the electronic file is uploaded to the cloud disk or network server , Get the file index information. On the one hand, in order to obtain the user's operations on the paper dot matrix file, the dot matrix resource used for positioning needs to be loaded onto the electronic file. On the other hand, in order to obtain the file index information, it is necessary to add The array code is loaded onto the electronic file. Two ways to carry the document index information to the paper dot matrix document have been described above. If the method shown in Figure 6a is adopted, the file index information is carried to the first dot matrix resource, and the first dot matrix resource is used to encode the electronic file; if the method shown in Figure 6b is adopted, the following steps can be implemented: , Obtain the first dot matrix resource and the electronic file to generate the dot matrix coded electronic file; the second step is to obtain the file index information and the second dot matrix resource to generate the cover or specific area that carries the file index information; the third step, the two Those are combined into one document.

As shown in FIG. 2, it is a flowchart of a file presentation method provided by the second embodiment of the present invention, which includes the following steps:

Step S201: The first terminal establishes a communication connection with the smart pen.

In step S202, click any position or a specific position of the paper dot matrix file through the smart pen to obtain the file index information.

Step S203: Obtain and display the corresponding electronic file according to the file index information.

Steps S201 to S203 are the same as the first embodiment, and will not be repeated here.

Step S204: Obtain the writing track information of the user using the smart pen on the paper dot matrix file.

Since the code point information is printed on the paper dot matrix file, when the smart pen writes, marks, or paints on the paper dot matrix file, the smart pen can read the dot matrix pattern at the position of the pen tip and correct These code point graphics are processed and analyzed by image to obtain writing track information. The writing track information includes X coordinate information, Y coordinate information, page number information, type information, book number information, etc. of the writing point.

Step S205: Perform synchronous drawing at the corresponding position of the electronic file according to the writing track information.

In practical applications, you can set function buttons on the display interface of the electronic file, for example, set the pen color, thickness, eraser, etc., so that the content displayed on the electronic file can be richer and more free.

In the process of file presentation, users can not only switch the page number on the electronic file side, but also automatically switch the electronic file synchronously by switching the paper dot matrix file. This is because when the smart pen obtains the writing track information, it can not only obtain the X and Y coordinates of the current writing point, but also the page number information, so that the smart terminal can switch the electronic file to the paper based on the writing track information. The same page number of the dot matrix file is displayed.

As shown in FIG. 3, it is a flowchart of a file presentation method provided by Embodiment 3 of the present invention, which includes the following steps:

Step S301: The first terminal establishes a communication connection with the smart pen.

In step S302, click any position or a specific position of the paper dot matrix file through the smart pen to obtain the file index information.

Step S303: Obtain and display the corresponding electronic file according to the file index information.

Steps S301 to S303 are the same as the first embodiment, and will not be repeated here.

Step S304: Establish a communication connection with at least one second terminal.

In the embodiment of the present invention, the first terminal may be a teacher terminal or a conference host terminal, and the second terminal may be a student terminal or a conference participant terminal. .

Step S305: Transmit the file index information to the second terminal, so that the second terminal obtains and displays the corresponding electronic file according to the file index information.

Preferably, the first terminal is also used to send page number information to the second terminal. In this way, no matter when the second terminal joins the teaching or conference, it can automatically be consistent with the file display of the first terminal.

Step S306: Obtain the writing track information of the user using the smart pen on the paper dot matrix file.

Step S307: Perform synchronous drawing at the corresponding position of the electronic file according to the writing track information.

Step S308: Transmit the writing track information to the second terminal, so that the electronic file displayed by the second terminal is synchronized with the first terminal.

It should be noted that the user can also directly operate the electronic file on the smart terminal without using the paper dot matrix file. These operating instructions and operating position information need to be sent to the second terminal synchronously, so that the second terminal and the first terminal A terminal keeps synchronization, this is the prior art, and will not be repeated here.

As shown in FIG. 4, it is a flowchart of a file presentation method provided by the fourth embodiment of the present invention, which includes the following steps:

Step S401: The first terminal establishes a communication connection with the smart pen.

In step S402, click any position or a specific position of the paper dot matrix file through the smart pen to obtain the file index information.

Step S403: Obtain and display the corresponding electronic file according to the file index information.

Step S404: Establish a communication connection with at least one second terminal.

Step S405: Record the screen content of the electronic file in real time, and send the recorded screen content of the electronic file to the second terminal.

Step S406: Obtain the writing track information of the user using the smart pen on the paper dot matrix file.

Step S407: Perform synchronous drawing at the corresponding position of the electronic file according to the writing track information.

In the embodiment of the present invention, the file content displayed by the second terminal and the first terminal is kept synchronized by means of screen recording.

As shown in FIG. 5, it is a flowchart of a file presentation method provided by Embodiment 5 of the present invention, which includes the following steps:

Step S501, the second terminal establishes a communication connection with the first terminal;

Step S502: Obtain a corresponding dot matrix electronic file for display according to the file index information sent by the first terminal;

Step S503, receiving the writing track information transmitted by the first terminal;

Step S504: Perform synchronous drawing at the corresponding position of the electronic file according to the writing track information.

As shown in FIG. 7, it is a structure diagram of a file presentation device provided by an embodiment of the present invention, including:

The first connection module 701 is used to establish a communication connection with the smart pen;

The information obtaining module 702 is used to click any position or a specific position of the paper dot matrix file to obtain file index information through a smart pen;

The file presentation module 703 is used to obtain corresponding electronic files for display according to the file index information.

Paper dot matrix files are printed or printed by electronic files loaded with dot matrix resources. In addition to the content of the file, the paper dot matrix file in the present invention also carries file index information. The file index information is an ID used to uniquely locate an electronic file. Those skilled in the art know that dot matrix resources are binary data represented by dot patterns. The smart pen can obtain a string of binary data by photographing and analyzing the dot patterns on the paper dot matrix file. Each of the binary data The position book can be defined according to user needs. For example, for a dot matrix data block that can store 48-bit binary data, define 0-7 bits as Y-axis coordinates, 8-15 bits as X-axis coordinates, 16-25 bits as page number information, and 26-29 bits Defined as a category, 30-41 bits are defined as book numbers, and 42-47 bits are used for parity checking, fault tolerance processing, etc.

.

It is understandable that the user has used the smart terminal to edit the electronic file in advance. The electronic file can be in printable file formats such as word, excel, pdf, ppt, jpg, etc. After the editing is completed, the electronic file is uploaded to the cloud disk or network server , Get the file index information. On the one hand, in order to obtain the user's operations on the paper dot matrix file, the dot matrix resource used for positioning needs to be loaded onto the electronic file. On the other hand, in order to obtain the file index information, it is necessary to add The array code is loaded onto the electronic file. Two ways to carry the document index information to the paper dot matrix document have been described above. If the method shown in Figure 6a is adopted, the file index information is carried to the first dot matrix resource, and the first dot matrix resource is used to encode the electronic file; if the method shown in Figure 6b is adopted, the following steps can be implemented: , Obtain the first dot matrix resource and the electronic file to generate the dot matrix coded electronic file; the second step, obtain the file index information and the second dot matrix resource to generate the cover or specific area that carries the file index information; the third step, the two Those are combined into one document.

In an embodiment of the present invention, it further includes a second connection module, which establishes a communication connection with at least one second terminal; and the file presentation module 703, which is also used to obtain the writing track information of the user using the smart pen on the paper dot matrix file , Performing synchronous drawing at the corresponding position of the electronic file according to the writing track information; transmitting the file index information to the second terminal, so that the second terminal obtains the corresponding electronic file for display according to the file index information.

In one embodiment of the present invention, the file presentation module 703 is also used to record the screen content of the electronic file in real time, and send the recorded screen content of the electronic file to the second terminal, so that the electronic file displayed by the second terminal is the same as the electronic file displayed by the second terminal. The first terminal remains synchronized.

In an embodiment of the present invention, the device for file presentation is used to perform operations for implementing the method for file presentation in the above-mentioned embodiments of FIGS. 1 to 4.

The present invention is also used to provide an intelligent terminal, and the electronic equipment includes the above-mentioned file presentation device. Specifically, the smart terminal includes terminals such as mobile phones, pads, notebooks, computers, and all-in-ones.

Fig. 8 shows a structure diagram of a file presentation system in an embodiment of the present invention, including: a first terminal 81, a smart pen 82, and a paper dot matrix file 83, in which,

The first terminal 81 is the aforementioned smart terminal, which establishes a communication connection with the smart pen 82; clicks on any position or a specific position of the paper dot matrix file 83 through the smart pen 82 to obtain file index information; and obtains file index information according to the file index information The corresponding electronic file is displayed;

The smart pen 82 establishes a communication connection with the first terminal 81; obtains the file index information obtained by the user clicking any position or a specific position of the paper dot matrix file 83 through the smart pen 82, and sends the file index information to the first terminal 81 Obtain the writing track information of the user using the smart pen 82 on the paper dot matrix file 83, and send the writing track information to the first terminal 81;

The paper dot matrix file 83 is printed or printed from an electronic file loaded with a dot matrix resource, and the dot matrix resource carries file index information.

In an embodiment of the present invention, the system further includes:

At least one second terminal 84 establishes a communication connection with the first terminal 81; obtains the corresponding dot matrix electronic file for display according to the file index information sent by the first terminal 81, and receives the writing track information transmitted by the first terminal 81; The writing track information is drawn synchronously in the corresponding position of the electronic file.

In an embodiment of the present invention, the second terminal 84 is configured to receive the screen content of the electronic file recorded by the first terminal 81, and display the screen content of the electronic file.

According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium stores a computer program, and when the computer program is executed by a storage device, the implementation is as described in the above-mentioned embodiments of FIGS. 1 to 4 The document demonstrates the method. The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. The computer-readable signal medium includes, but is not limited to, conventional systems, devices, or periods of electrical, magnetic, optical, electromagnetic, infrared, or semiconductor, or a combination of any of the above. Computer-readable storage media include: electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory, erasable programmable read-only memory (EPROM or flash memory), optical fiber , Portable compact disk read-only memory (CD_ROM), optical storage device, magnetic storage device, or any suitable combination of the above. In the present invention, the computer-readable storage medium may be any tangible medium that contains or stores a program, and the program may be used by an instruction execution system, apparatus, or device, or a combination thereof.

The computer-readable signal medium may include a data signal propagated in baseband or as a part of a carrier wave, and computer-readable program code is carried therein. This propagated data signal can take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing. The computer-readable signal medium may also be any computer-readable medium other than the computer-readable storage medium. The computer-readable medium may initiate, propagate, or transmit the program for use by or in combination with the instruction execution system, apparatus, or device .

The program code contained on the computer-readable medium can be transmitted by any suitable medium, including but not limited to wireless, wire, optical cable, RF, etc., or any suitable combination of the foregoing. The computer program code used to perform the operations of the present invention can be written in one or more programming languages or a combination thereof. The programming languages include object-oriented programming languages-such as Java, Smalltalk, C++, and also include conventional procedural programming languages. Programming language-such as C language or similar programming language. The program code can be executed entirely on the user's computer, partly on the user's computer, executed as an independent software package, partly on the user's computer and partly executed on a remote computer, or entirely executed on the remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any kind of network-including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (for example, using an Internet service provider to pass Internet connection).

The devices demonstrated in the documents described above can be implemented as general-purpose processors, programmable logic controllers (PLC), digital signal processors (DSP), application-specific integrated circuits (ASIC), and on-site Programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any suitable combination thereof.

Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing relevant hardware through a computer program. The program can be stored in a computer readable storage medium. During execution, it may include the processes of the above-mentioned method embodiments. Wherein, the storage medium can be a magnetic disk, an optical disc, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random Access Memory, RAM), etc.

The above-disclosed are only preferred embodiments of the present invention. Of course, the scope of rights of the present invention cannot be limited by this. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims

A file presentation method, characterized in that the method includes:

The first terminal establishes a communication connection with the smart pen;

Use smart pen to click any position or specific position of the paper dot matrix file to obtain file index information;

Obtain the corresponding electronic file according to the file index information and display it.
The method according to claim 1, wherein the paper dot matrix file is printed or printed after loading a dot matrix resource into an electronic file, and the dot matrix resource carries file index information.
The method of claim 1, wherein the file content of the paper dot matrix file is encoded using a first dot matrix resource, and the file index information of the paper dot matrix file is encoded using a second dot matrix resource. coding.
The method according to claim 3, wherein the file index information is set in the cover of the paper dot matrix file or the surrounding area that does not affect the display of the file content.
The method according to any one of claims 1 to 4, wherein the method further comprises:

Obtain the writing track information of the user using the smart pen on the paper dot matrix file;

Perform synchronous drawing at the corresponding position of the electronic file according to the writing track information;

The writing track information is transmitted to the second terminal, so that the electronic file displayed by the second terminal is synchronized with the first terminal.
The method of claim 5, wherein the method further comprises:

Establish a communication connection with at least one second terminal;

The file index information is transmitted to the second terminal, so that the second terminal obtains and displays the corresponding electronic file according to the file index information.
The method of claim 4, wherein the method further comprises:

Establish a communication connection with at least one second terminal;

Perform real-time recording of the screen content displaying the electronic file, and send the recorded screen content of the electronic file to the second terminal, so that the electronic file displayed by the second terminal is synchronized with the first terminal.
A file presentation method, characterized in that the method includes:

Establish a communication connection with the first terminal;

Obtaining a corresponding dot matrix electronic file for display according to the file index information sent by the first terminal;

Receiving the writing track information transmitted by the first terminal;

Synchronous drawing is performed at the corresponding position of the electronic file according to the writing track information.
A file presentation device, characterized in that it includes:

The first connection module is used to establish a communication connection with the smart pen;

The information acquisition module is used to click any position or specific position of the paper dot matrix file to obtain the file index information through the smart pen;

The file presentation module is used to obtain corresponding electronic files for display according to the file index information.
The device according to claim 8, wherein the device is used to implement the method for implementing the file presentation according to any one of claims 1 to 7.
An intelligent terminal, characterized in that the intelligent terminal comprises the device according to claim 9 or 10.
A file presentation system, which is characterized in that it includes:

A first terminal, the first terminal being the smart terminal according to claim 11;

The smart pen establishes a communication connection with the first terminal, obtains the file index information obtained by the user by clicking on any position or specific position of the paper dot matrix file through the smart pen, and sends the file index information to the first terminal; and obtains the user Use the writing track information of the smart pen on the paper dot matrix file to send the writing track information to the first terminal;

A paper dot matrix file is printed or printed after loading a dot matrix resource into an electronic file, and the dot matrix resource carries file index information.
The system of claim 12, further comprising:

At least one second terminal establishes a communication connection with the first terminal; obtains the corresponding dot matrix electronic file for display according to the file index information sent by the first terminal, receives the writing track information transmitted by the first terminal; according to the writing track The information is drawn synchronously in the corresponding position of the electronic file.
The system of claim 12, further comprising:

At least one second terminal establishes a communication connection with the first terminal; receives the screen content of the electronic file recorded by the first terminal, and displays the screen content of the electronic file.
A computer-readable storage medium having a computer program stored thereon, wherein the computer program is executed by a processor to implement the file presentation method of any one of claims 1-7.