实时协同位图编辑系统中不一致性问题研究  

Research on Inconsistency Problems in Real-time Collaborative Bitmap Editing Systems

作　　者：朱桂华[1] 

机构地区：[1]常德师范学院计算机科学与技术系,湖南常德415003

出　　处：《计算机工程与应用》2003年第13期117-121,共5页Computer Engineering and Applications

基　　金：教育部重点课题(编号:ZD-00-02)资助;湖南省自然科学基金项目(编号:00JJY2068)资助

摘　　要：实时协同编辑系统有着广泛的应用前景,然而其冲突性操作导致众多结果不一致,解决一致性问题已成为设计与实现实时协同系统的关键性问题。该文基于对分布式系统采用的各种并发控制和一致性维持模型的比较,分析协同编辑中的三种不一致性问题、一致性模型,并研究相应的解决技术,提出了一种新的基于复制结构的协同位图编辑系统一致性维持模型。Real-time collabrative editing systems will be used for many aspects,however,in which the execution of conflicting operations may produce inconsistent results,so solving inconsistency problems is one of the most significant challenges in designing and implementing real-time collaborative editing systems.First,we investigate the concurrency control and consistency maintenance schema adopted by distributed computing system;then,writer examines three inconsistency problems existing in collaborative editing systems and presents a consistency model of collaborative editing systems ;Finally,the writer proposes a novel consistency maintenance schema in bitmap -based collaborative editing systems.It is the first time to use this schema to achieve consistency preservation in bitmap-based collaborative graphics designing system.

关 键 词：实时协同编辑系统 一致性维持 并发控制 冲突 

分 类 号：TP31[自动化与计算机技术—计算机软件与理论]