The techniques and methods used for processing multimedia data in database are proposed. Security of database is also discussed.
提出了处理数据库中多媒体数据的技术和方法，讨论了数据库的安全问题。
Four key techniques of telemedicine system about are researched respectively, which are network protocols, multimedia database system, data compress and network security.
本文对远程医疗的四个关键技术——网络协议、多媒体数据库技术、数据压缩技术、网络安全分别进行了研究。
It has brought us great convenience and a great number of information security problems as well. Such as information theft, copyright protection of multimedia data and image authentication.
它给人们带来种种便利的同时也带来了一系列的信息安全问题，比如信息窃取问题、多媒体信息的版权保护问题、信息篡改问题等。
With considerable development of the network and multimedia technology, the security problem of the video data becomes more urgent.
随着网络和多媒体技术的飞速发展，视频数据的安全问题越来越突出。
Digital multimedia forensics is an emerging research field of information security. The research on digital multimedia forensics is important to ensure the credibility of digital multimedia data.
数字多媒体取证是信息安全一个刚刚兴起的研究领域，研究数字多媒体取证技术对确保多媒体数据的可靠性有着极其重要的意义。
It can provide effective protection for digital media forgery, falsification, authentication, security and intactness by embedding a special mark (digital watermark) into the multimedia data.
它主要通过在媒体信息中嵌入标记信号(数字水印)，为媒体信息在防伪、防篡改、认证、保障数据安全和完整性等方面提供有效的技术手段。
It can provide effective protection for digital media forgery, falsification, authentication, security and intactness by embedding a special mark (digital watermark) into the multimedia data.
它主要通过在媒体信息中嵌入标记信号(数字水印)，为媒体信息在防伪、防篡改、认证、保障数据安全和完整性等方面提供有效的技术手段。
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