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摘要随着时代信息技术的飞速发展，作为各类信息高度集中的重要场所，多媒体中控系统所涵盖的范围已大大增加，其中主要是增加了视频和控制方面的设备，包括投影、信号处理和集中控制等子系统。近几年多媒体信息数字化和网络化技术得到了高速发展，数字化、网络化已成为传统音视频系统的发展方向。多媒体中控系统中的信号处理和集中控制两个子系统已完全数字化和网络化，其它几个子系统也在向同一方向发展。于是产生数字多媒体集中控制会议系统。当今世界音频、视频、电子、电气系统比比皆是，设备的数量不断增加，用户往往因为控制键太多、操作分散而无所适从。现在从多功能会议厅、多媒体产品演示厅、监控调度室、管制指挥厅等的电子电器设备到整个大楼、整个边区的综合智能控制，相配的遥控式集中智能控制系统孕育而生，为集中控制各种电子电气设备提供了一个技术先进、操作简单、功能完善的解决方案。集中智能控制系统通过专用软件预先编程，汇集这些电子电气系统的控制功能，只需通过一块控制面板、LCD触摸屏或按钮式遥控面板，各种电子电气设备的控制便尽在掌握之中了，轻轻一按就可以改变外部环境，也可以选择来自广播、卫星、摄录媒介的视频，或者对音量、平衡、频道等进行微调控制，可以操作可遥控设备的遥控功能（如录像机的快进快退，投影机的操作等），并对所有被控设备功能实行集中智能控制及管理。集中智能控制系统使用简便、技术先进，既可作单按钮单功能操作，又可编定多功能的程序。集中智能遥控式控制系统的精髓就是能将复杂的控制，清晰明了地呈现给用户。关键字：数字多媒体；集中控制系统；智能控制；信息技术；预先编程ABSTRACTWiththerapiddevelopmentofinformationtechnologyera,asthehighconcentrationofvarioustypesofinformationimportantplaceformultimediacontrolscopecoveredbythesystemgreatlyincrease,mainlytheadditionofvideoandcontrolequipment,includingprojectors,signalprocessing,andcentralizedcontrolsubsystem.Inrecentyears,digitalmultimediaandnetworktechnologyhasbeenrapiddevelopmentofdigital,networkedaudioandvideohasbecomeatraditionalsystemdevelopment.Multimediasignalprocessingcontrolsystemandcentralizedcontrolofthetwosubsystemsarecompletelydigitalandnetwork,severalothersubsystemsareinthesamedirection.Sohadwetalkaboutthedigitalmultimediaconferencing.Theworldofaudio,video,electronics,electricalsystemsabound,theincreasingnumberofdevices,usersoftenhavetoomuchcontrolkeys,theoperationdistributedpills.Nowfromthemulti-functionalconferencehall,multi-mediaproductdemonstrationroom,monitoringthedispatchroom,thecontrolcommandsuchaselectricalandelectronicequipmentroomtothewholebuilding,theintegratedintelligentcontroloverthearea,matchingremotecontrol-stylecentralizedintelligentcontrolsystemdevelopedwhichisfocusedoncontrolofvariouselectricalandelectronicequipmentprovideatechnologicallyadvanced,simple,functionalsolution.Focusonintelligentcontrolsystemusingspecialsoftwarepre-programmedcollectionofelectricalandelectronicsystemstocontrolthesefunctions,simplybyacontrolpanel,LCDtouchscreenorpush-buttonremotecontrolpanel,thecontrolofvariouselectricalandelectronicequipmentwillbeeasytograsp,andlightLightoneclickcanchangetheexternalenvironmentcanalsochoosefromthebroadcast,satellite,videomedia,video,orvolume,balance,fine-tunethecontrolchannel,etc.,canoperatetheremotecontroldeviceremotecontrolfunctions(suchasVCR'sfastforwardrewind,operationoftheprojector,etc.),andcentralizedalltheaccuseddevicefeaturesintelligentcontrolandmanagement.Focusonintelligentcontrolsystemeasytouse,advancedtechnology,bothforsingle-buttonsingle-functionoperation,butalsotheproceduresforthescheduledfunction.Intelligentremotecontrolsystemfocusedontheessenceofthecomplexisabletocontrol,clarityinpresentationtotheuser.Keyword：DigitalMultimedia；CentralControlSystem；IntelligentControl；Informationtechnology；Pre-programmed目录1绪论....................................................................................................................................................61.1引言.............................................................................................................................................61.2多媒体控制系统的现状..............................................................................................................72数字多媒体集中控制系统.....................................................................................................................92.1数字多媒体集中控制系统的概述..............................................................................................92.1.1集中控制系统的产生.......................................................................................................92.1.2集中控制系统定义...........................................................................................................92.1.3集中控制系统的构成.....................................................................................................102.1.4集中控制系统的特点.....................................................................................................102.2数字多媒体集中控制技术发展................................................................................................112.3课题研究的目的及意义...........................................................................................................123课题设计思想......................................................................................................................................133.1基本要求...................................................................................................................................133.2设计思想...................................................................................................................................143.3设计内容简介............................................................................................................................143.4课题方案设计思想....................................................................................................................153.4.1系统设计原则..............................................................................