WO2022166100A1

WO2022166100A1 - Multi-person synchronous document sharing and viewing method, and processing terminal

Info

Publication number: WO2022166100A1
Application number: PCT/CN2021/104541
Authority: WO
Inventors: 张常华; 朱正辉
Original assignee: 广州市保伦电子有限公司
Priority date: 2021-02-03
Filing date: 2021-07-05
Publication date: 2022-08-11
Also published as: CN112818635A

Abstract

A multi-person synchronous document sharing and viewing method, and a processing terminal. The method comprises: receiving a synchronous document sharing and viewing request, and downloading a document if there is no document; determining whether the screen resolution of a local client is consistent with the screen resolution of a first client, and if not, processing the document such that the document processed in this step can be adapted to the local client for display; converting the document into a bitmap file and reducing the document to obtain a thumbnail bitmap file, and dividing the thumbnail bitmap file into a plurality of blocks by pixels; reading and displaying the document content on the corresponding blocks for synchronous sharing and viewing; and determining a sliding direction, recycling and not displaying the blocks rendered in the head and tail of the document in the sliding direction, and reusing the blocks which are not involved in the sliding operation. The method effectively reduces resource consumption of hardware such as CPU, and reduces network bandwidth requirements. The rendered document image can be loaded more quickly, and the document sharing and viewing experience is improved.

Description

A document multi-person synchronous sharing browsing method and processing terminal

technical field

The invention relates to the technical field of synchronous sharing and browsing of electronic documents, in particular to a method and a processing terminal for synchronous sharing and browsing of documents for multiple people.

Background technique

In an electronic conference (such as an online video conference), if the presenter needs to share the document of the speech (such as a report document in PDF format) to the participants for simultaneous browsing, it is usually achieved by video streaming or live streaming. , that is, the video stream data is formed after taking a video of the shared document and then distributed to all participants in each sub-venue, so as to achieve the purpose of synchronously sharing and browsing the document. However, whether it is a live stream or a video stream, the video codec has high requirements on the performance of the server, network bandwidth, and terminal (such as a tablet). For the network, it can simultaneously support the terminal (corresponding to the participants) synchronously share the number of browsing Limited, even in a local area network, the number of terminals that can be online at the same time has a certain limit.

In addition, when using a mobile phone or tablet terminal, taking an Android phone as an example, when a picture with a larger resolution needs to be loaded, the average rendering time of the entire process from blurring to clear rendering takes about 0.5-2 seconds. Of course, it will fluctuate up and down by the hardware performance configuration of the mobile phone. For users, such rendering actually takes a long time, and the user experience is not very good.

In view of the above two aspects, it is desirable to have a document sharing method that does not depend on video streams and takes less time to load documents (pictures).

SUMMARY OF THE INVENTION

In view of the deficiencies of the prior art, one of the objects of the present invention provides a multi-person synchronous sharing browsing method for documents, which can solve the problem of efficiently loading documents to be shared for browsing;

The second object of the present invention is to provide a processing terminal, which can solve the problem of efficiently loading browsing documents to be shared.

A technical solution for realizing one of the objects of the present invention is: a method for synchronizing and sharing browsing of documents for multiple people, comprising the following steps:

Step 1: Receive a request for synchronous sharing and browsing of documents initiated by the first client. After receiving the request, if the local client has a document to be synchronously shared and browsed, step 2 is performed. If there is no document to be synchronously shared on the local client For a browsed document, download the document to be synchronously shared and browsed, wherein the request data package of the document to be synchronously shared and browsed includes at least the screen resolution of the first client;

Step 2: If the screen resolution of the local client is the same as the screen resolution of the first client, step 3 is directly executed; The document processed in this step can be adapted to the local client for display;

Step 3: Convert the document obtained in Step 2 into a bitmap file, abbreviate the bitmap file to obtain a thumbnail bitmap file, and divide the abbreviated bitmap file into several pieces according to pixels. It is distributed in an array, and each shard block distributed in an array displays the content of different positions of the document;

Step 4: According to the document content to be displayed on the first client, the local client reads out the document content at the same location, and displays the corresponding shards on the local client, so as to achieve the effect of synchronous shared browsing.

Further, in the step 1, the local client downloads the document to be synchronously shared and browsed from the server, and the server delivers the document to be synchronously shared and browsed to the first client and all local clients.

Further, in the step 2, the offset is processed according to formula ①:

In the formula, width ₀ represents the width of the first client display view, height ₀ represents the height of the first client display view, width represents the width of the local client display view, Y represents the calculation result of the vertical offset of the local client document, and Y ₀ represents The vertical offset of the first client document.

Further, in the step 3, the pixel of the thumbnail bitmap file is a times of the original bitmap file, 0<a<1.

Further, in the step 3, a separate space storage queue is preset for the fragmented blocks, and all the fragmented blocks are stored in the space storage queue.

Further, after performing step 4, it also includes:

When receiving a sliding operation instruction on the document, the sliding direction is determined, and the shard blocks rendered in the head and tail parts of the document in the sliding direction are recycled and not displayed, and the shard blocks not involved in the sliding are reused.

The technical solution for realizing the second object of the present invention is: a processing terminal, which includes:

memory for storing program instructions;

The processor is configured to run the program instructions to execute the steps of the method for synchronously sharing and browsing the document by multiple people.

The beneficial effects of the present invention are: compared with traditional video streaming document browsing on the same screen, the present invention can effectively reduce the consumption of CPU and other hardware resources and network bandwidth requirements, and at the same time, can load and render document pictures more quickly, and improve the document sharing and browsing experience.

Description of drawings

Fig. 1 is the document browsing interface that the first client is forwarding the lecture;

Fig. 2 is the browsing interface of synchronously sharing browsing the same document as the first client;

Fig. 3 is the schematic flow chart of the preferred embodiment;

FIG. 4 is a schematic diagram of a processing terminal.

Detailed ways

Hereinafter, the present invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in Figures 1-3, a method for synchronously sharing and browsing a document for multiple people includes the following steps:

Step 1: Receive a request for synchronous shared browsing of documents initiated by the first client. After receiving the request, if there is a document to be synchronously shared and browsed on the local client, step 2 is performed and the response document synchronous shared browsing is started. If If there is no document to be shared and browsed by synchronization on the local client, the document to be shared and browsed by synchronization is downloaded from the server, and the server can deliver the document to all local clients. The request data package for synchronous shared browsing of documents includes information such as the document identification number, current page number, page magnification, document offset, and annotation content of the document currently opened in the first client, and the first client end screen resolution.

Step 2: If the screen resolution of the local client is the same as the screen resolution of the first client, step 3 is directly executed; The document processed in this step can be adapted to the local client for display. The screen size ratio conversion includes the conversion of offset coordinate points, cursor, and brush size. The brush refers to the virtual brush used for annotation and presentation in the document. The curves in Figures 1 and 2 were drawn with a brush.

Among them, the offset is processed according to formula ①:

In the formula, width ₀ represents the width of the display view of the first client, height ₀ represents the height of the display view of the first client, and width ₀ *height ₀ also represents the screen resolution of the local client. width represents the width of the local client display view, Y represents the calculation result of the vertical offset of the local client document, and Y ₀ represents the vertical offset of the first client document.

In this step, the local client as the receiving end responds to different operations according to different received requests, so as to realize the effect of synchronous shared browsing between the local client and the first client, which is equivalent to realizing the effect of browsing on the same screen. The data packets transmitted in this process are text data packets, which replace the data packets of streaming media (ie, video streams), reducing the dependence on network bandwidth, and in the entire data distribution and processing process, text data processing is compared to video data. The processing of stream encoding and decoding greatly reduces the consumption of CPU and memory.

Step 3: Convert the above-processed document into a bitmap file, and abbreviate the bitmap to obtain a thumbnail bitmap file. The pixels of the thumbnail bitmap file are preferably 20% of the original bitmap file, and the thumbnail The thumbnail bitmap file is divided into several slice blocks according to pixels, each slice block is an array, and each slice block in the array displays the content of different positions of the document. For example, a 1000*1000 pixel thumbnail bitmap file is divided into a 5*5 array with a total of 25 slice blocks, and the pixels of each slice block are 200*200.

Among them, the local client will open up a separate space storage queue for these shard blocks, all shard blocks are stored in the space storage queue, and a maximum of 128 shard blocks can be stored. And mark each shard block. Assuming that there are 25 shard blocks in total, the lower marks are 0-24 in sequence. When the 0 shard block is rendered, the 0 shard block will be placed on the local client. For display, because there is no need to render and display all 25 shards, the rendering time only needs 1/25 of the original. Similarly, when the shard block No. 1 is rendered, the shard block No. 1 is displayed on the local client, and so on until all the shard blocks are rendered, visible, and the displayed sequence is from left to right, from The temperature contents are clearly displayed in sequence from top to bottom.

Step 5: After performing Step 4, it also includes:

When receiving a sliding operation instruction on the document, the sliding direction is determined, and the shard blocks rendered in the head and tail parts of the document in the sliding direction are recycled and not displayed, and the shard blocks that are not involved in the sliding are reused. For example, if the size of a shard block is not reached by sliding up, another storage space will be allocated, and 5 shard blocks will be rendered downward, and the 5 shard blocks will be stored in the newly allocated storage space and placed in the displayed on the local client. When sliding up to the size of a shard block, the top 5 shard blocks are removed from the storage queue, and the reverse slide (that is, sliding down) will recycle the last 5 shard blocks for rendering. And so on.

FIG. 1 is a document browsing interface where the first client is forwarding a lecture, and operations such as annotation can be performed. Fig. 2 is a browsing interface for synchronously sharing and browsing the same document as the first client, and synchronously displays the content of the document currently opened by the first client, and synchronously displays the annotation content in real time, such as each curve drawn in the figure and the "√" annotation.

As shown in FIG. 4 , the present invention also relates to a processing terminal 100, which includes:

a memory 101 for storing program instructions;

The processor 102 is configured to run the program instructions to execute the steps of the method for synchronously sharing and browsing a document for multiple people.

The embodiment disclosed in this specification is only an illustration of the unilateral feature of the present invention, and the protection scope of the present invention is not limited to this embodiment, and any other functionally equivalent embodiments fall within the protection scope of the present invention. For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all these changes and deformations should fall within the protection scope of the claims of the present invention.

Claims

A method for synchronously sharing and browsing a document for multiple people, comprising the following steps:

Step 1: Receive a request for synchronous sharing and browsing of documents initiated by the first client. After receiving the request, if the local client has a document to be synchronously shared and browsed, step 2 is performed. If there is no document to be synchronously shared on the local client For a browsed document, download the document to be synchronously shared and browsed, wherein the request data package of the document to be synchronously shared and browsed includes at least the screen resolution of the first client;

Step 2: If the screen resolution of the local client is the same as the screen resolution of the first client, step 3 is directly executed; The document processed in this step can be adapted to the local client for display;

Step 3: Convert the document obtained in Step 2 into a bitmap file, abbreviate the bitmap file to obtain a thumbnail bitmap file, and divide the abbreviated bitmap file into several pieces according to pixels. It is distributed in an array, and each shard block distributed in an array displays the content of different positions of the document;

Step 4: According to the document content to be displayed on the first client, the local client reads out the document content at the same location, and displays the corresponding shards on the local client, so as to achieve the effect of synchronous shared browsing.
The method according to claim 1, wherein in step 1, the local client downloads the document to be synchronously shared and browsed from the server, and the server delivers the document to be synchronously shared and browsed to the first One client and all local clients.
The document multi-person synchronous sharing browsing method according to claim 1, is characterized in that, in described step 2, carry out offset processing according to formula 1.:

In the formula, width 0 represents the width of the first client display view, height 0 represents the height of the first client display view, width represents the width of the local client display view, Y represents the calculation result of the vertical offset of the local client document, and Y 0 represents The vertical offset of the first client document.
The method according to claim 1, wherein in the step 3, the pixel of the thumbnail bitmap file is a times the original bitmap file, 0<a<1.
The method for multi-person synchronous sharing and browsing of documents according to claim 1, wherein in step 3, a separate space storage queue is preset for the fragmented blocks, and all the fragmented blocks are stored in the space storage queue.
The multi-person synchronous sharing browsing method for documents according to claim 1, characterized in that, after performing step 4, the method further comprises:

When receiving a sliding operation instruction on the document, the sliding direction is determined, and the shard blocks rendered in the head and tail parts of the document in the sliding direction are recycled and not displayed, and the shard blocks not involved in the sliding are reused.
A processing terminal, characterized in that it includes:

memory for storing program instructions;

The processor is configured to run the program instructions to execute the steps of the method for synchronously sharing and browsing a document according to any one of claims 1-6.