摘要
微软公司的DirectShow开发包为开发高质量的多媒体软件提供了一个开放的平台,过滤器是DirectShow的基本组成部分。由于DirectShow的开放性,任何过滤器在操作系统中注册后,都可以被其他程序调用。为了保护过滤器核心技术,实现了两种过滤器的保护方案,一种是严格的版权保护,未授权的就不能使用;另一种是允许使用,但在视频上叠加了提示注册的文本。
The Microsoft＇s DirectShow development kit provides an opened platform for developing high quality multimedia software.Filter is the fundamental part of DirectShow.Owing to the DirectShow＇s opening attribute,every filter can be used by other applications after registration in the operating system.Two methods of copyright protection to filter are implemented.In these two methods,one is so hard that everyone who hasn＇t authorization can not use filter,and the other one allows everybody to use filter but there will be some text on the video stream to awake user to register.
出处
《科学技术与工程》
2009年第8期2208-2210,2219,共4页
Science Technology and Engineering
