CN104601678B - A kind of big concurrent blank remote real-time synchronous method - Google Patents

A kind of big concurrent blank remote real-time synchronous method Download PDF

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Publication number
CN104601678B
CN104601678B CN201410852518.8A CN201410852518A CN104601678B CN 104601678 B CN104601678 B CN 104601678B CN 201410852518 A CN201410852518 A CN 201410852518A CN 104601678 B CN104601678 B CN 104601678B
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China
Prior art keywords
mirror image
synchronization message
receiving terminal
subscription identity
server
Prior art date
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CN201410852518.8A
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Chinese (zh)
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CN104601678A (en
Inventor
周维丰
张福新
吴少刚
何慕嘉
管斌
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JIANGSU LEMOTE TECHNOLOGY Corp Ltd
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JIANGSU LEMOTE TECHNOLOGY Corp Ltd
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Priority to CN201410852518.8A priority Critical patent/CN104601678B/en
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/40—Support for services or applications
    • H04L65/401—Support for services or applications wherein the services involve a main real-time session and one or more additional parallel real-time or time sensitive sessions, e.g. white board sharing or spawning of a subconference
    • H04L65/4015—Support for services or applications wherein the services involve a main real-time session and one or more additional parallel real-time or time sensitive sessions, e.g. white board sharing or spawning of a subconference where at least one of the additional parallel sessions is real time or time sensitive, e.g. white board sharing, collaboration or spawning of a subconference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1095—Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Information Transfer Between Computers (AREA)
  • Computer And Data Communications (AREA)
  • Facsimiles In General (AREA)

Abstract

The invention discloses a kind of big concurrent blank remote real-time synchronous methods, including server end is that transmitting terminal and receiving terminal are established and subscribed to, and are established mirror image to current whiteboard.By timer timing update mirrored content, transmitting terminal returns to newest mirror image and subscription identity when logging in, receiving terminal returns to the synchronization message after newest mirror image, subscription identity and newest mirror image when logging in.Synchronization message is generated when transmitting terminal whiteboard operating and is sent to server together with subscription identity, and synchronization message is simultaneously sent to receiving terminal by server storage synchronization message according to subscription identity, and receiving terminal parses synchronization message, completes operation.This programme time delay is extremely low, and can increase receiving terminal at any time by subscribing to, and the mirror image in addition generated can be used for fast quick-recovery blank state.

Description

A kind of big concurrent blank remote real-time synchronous method
Technical field
The present invention relates to a kind of data methods, more particularly to a kind of big concurrent blank remote real-time synchronous method.
Background technology
Blank is exactly that one piece of white electronic writing board, the common whiteboard data side of synchronization are shared on computers by Faculty and Students There are two types of method is general, one is transmitting terminals to be transmitted directly to receiving terminal, and another kind is forwarded by server.Former approach pair Receiving terminal limited amount system can not support synchronization that is big and giving.Latter is generally all fairly simple, and server only provides forwarding Service, be easy to cause loss.
Invention content
In view of the deficiencies of the prior art, the object of the present invention is to provide a kind of big concurrent blank remote real-time synchronous method, Solve the big concurrent whiteboard data stationary problem between online large lectures teachers and students.
The technical scheme is that such：A kind of big concurrent blank remote real-time synchronous method, includes the following steps：
1) server end is to share the transmitting terminal of same blank and receive end subscriber to establish a subscription, generates and subscribes to mark Know；
2) server end is that current whiteboard makes first mirror image, and starts timer, when reaching the appointed interval time, According to a upper mirror image and the synchronization message occurred in the time interval of timer, a new mirror image is made, new mirror image is complete At the rear synchronization message deleted and occurred in a upper mirror image and Timer interval, resetting timer cycle makes mirror image；
3) when transmitting terminal login service device, server is received using subscription identity and newest mirror image as being transmitted back to End；
4) when receiving terminal login service device, server is by subscription identity, newest mirror image and has made newest mirror image The synchronization message occurred afterwards is used as and is transmitted back to receiving terminal；
5) when transmitting terminal user's operation blank, a synchronizing white message is generated, transmitting terminal is by the synchronization message and orders It reads mark and is sent to server；
6) when server end receives synchronization message and subscription identity, synchronization message is stored, searching has identical subscription identity Recipient, synchronization message is sent to recipient successively；
7) recipient parses message after receiving synchronization message, executes corresponding operation.
Technical solution provided by the present invention has the advantages that：
A) 100,000 grades of user is supported to synchronize, time delay is extremely low.
B) there is very strong retractility, can quickly increase transmitting terminal and receiving terminal as long as simple subscription operation, that is, increase Add synchronous user.
C) there is image feature, it being capable of fast quick-recovery blank state when the abnormal conditions such as net drop occur.
Description of the drawings
Fig. 1 is the synchronous flow diagram of the present invention.
Specific implementation mode
With reference to embodiment, the invention will be further described, but not as a limitation of the invention.
Incorporated by reference to Fig. 1, the blank program that the present embodiment is related to, synchronizing process is as follows between transmitting terminal and receiving terminal：
1) server end is to share the transmitting terminal of same blank and receive end subscriber to establish a subscription, generates subscription identity (ID)；
2) server end is that current whiteboard makes first mirror image, and starts timer, when reaching the appointed interval time, According to a upper mirror image and the synchronization message occurred in the time interval of timer, a new mirror image is made, new mirror image is complete At the rear synchronization message deleted and occurred in a upper mirror image and Timer interval, resetting timer cycle makes mirror image；
3) when transmitting terminal login service device, server is using subscription identity (ID) and newest mirror image as being transmitted back to Receiving terminal；
4) when receiving terminal login service device, server is by subscription identity (ID), newest mirror image and has made newest The synchronization message occurred after mirror image is used as and is transmitted back to receiving terminal；
5) when transmitting terminal user's operation blank, a synchronizing white message is generated, transmitting terminal is by the synchronization message and orders It reads mark (ID) and is sent to server；
6) when server end receives synchronization message and subscription identity (ID), synchronization message is stored, searching has identical subscription The recipient for identifying (ID), recipient is sent to by synchronization message successively；
7) recipient parses message after receiving synchronization message, executes corresponding operation.
Specific synchronization message includes following content：Type of message, operation code, message content, sender ID.Wherein disappear Breath type is divided into person's handwriting operation, graphic operation, document function；Operation code is the character string of four 0-9 digital representations；In message Hold the target, such as pixel-matrix, the document page number, figure number etc. for operation；Sender ID is the unique mark that operation is initiated.

Claims (1)

1. a kind of big concurrent blank remote real-time synchronous method, which is characterized in that include the following steps：
1) server end is to share the transmitting terminal of same blank and receive end subscriber to establish a subscription, generates subscription identity；
2) server end is that current whiteboard makes first mirror image, and starts timer, when reaching the appointed interval time, according to A upper mirror image and the synchronization message occurred in the time interval of timer make a new mirror image, after the completion of new mirror image The synchronization message occurred in a mirror image and Timer interval is deleted, resetting timer cycle makes mirror image；
3) when transmitting terminal login service device, server is using subscription identity and newest mirror image as being transmitted back to receiving terminal；
4) when receiving terminal login service device, server is sent out by subscription identity, newest mirror image and after having made newest mirror image Raw synchronization message is used as and is transmitted back to receiving terminal；
5) when transmitting terminal user's operation blank, a synchronizing white message is generated, transmitting terminal is by the synchronization message and subscribes to mark Knowledge is sent to server；
6) when server end receives synchronization message and subscription identity, synchronization message is stored, searches connecing with identical subscription identity Synchronization message is sent to recipient by receipts person successively；
7) recipient parses message after receiving synchronization message, executes corresponding operation.
CN201410852518.8A 2014-12-31 2014-12-31 A kind of big concurrent blank remote real-time synchronous method Active CN104601678B (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
CN201410852518.8A CN104601678B (en) 2014-12-31 2014-12-31 A kind of big concurrent blank remote real-time synchronous method

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CN104601678A CN104601678A (en) 2015-05-06
CN104601678B true CN104601678B (en) 2018-10-09

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111355700B (en) * 2019-06-27 2023-04-07 鸿合科技股份有限公司 Network whiteboard sharing method and system and electronic equipment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101494820A (en) * 2008-01-22 2009-07-29 三星电子株式会社 System and method for profile synchronization
CN102195980A (en) * 2011-04-26 2011-09-21 苏州阔地网络科技有限公司 Webpage-based electronic whiteboard secure synchronization method and system
CN103491055A (en) * 2012-06-12 2014-01-01 中兴通讯股份有限公司 Method for synchronizing information among clients, clients and server
CN103929320A (en) * 2013-01-15 2014-07-16 中国银联股份有限公司 Integration platform for IT system disaster recovery

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8982066B2 (en) * 2012-03-05 2015-03-17 Ricoh Co., Ltd. Automatic ending of interactive whiteboard sessions

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101494820A (en) * 2008-01-22 2009-07-29 三星电子株式会社 System and method for profile synchronization
CN102195980A (en) * 2011-04-26 2011-09-21 苏州阔地网络科技有限公司 Webpage-based electronic whiteboard secure synchronization method and system
CN103491055A (en) * 2012-06-12 2014-01-01 中兴通讯股份有限公司 Method for synchronizing information among clients, clients and server
CN103929320A (en) * 2013-01-15 2014-07-16 中国银联股份有限公司 Integration platform for IT system disaster recovery

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