Based on discussing in detail IGES file structure and data record form, and referring to the corresponding literatures published in the domestic and international journals, IGES interface program is presented. 详细地探讨了IGES的文件构成和数据记录格式,并在参阅国内外相关文献的基础上,编写了IGES接口程序,保证了开发的曲面重构系统与其它专业CAD软件的数据交流。
One small CAD system was surveyed, and data file was analyzed to derive the detail structure of data file. Meanwhile, according to the structure of data file, one sample program for data decryption was written to give a reference. 考察了一个小型CAD系统,对其数据文件进行了剖析,导出其数据文件的详细构造,并依据其文件结构编写了一个数据解密的样例程序供参考。
This thesis introduces the ISO base media file format in detail, which is defined in MPEG-4 Standard and derived from MOV file format. In physical structure, this format is object-oriented, every objects called 'atoms' have their specific layers; 本文详细介绍了ISO基媒体文件格式,该格式定义在MPEG-4标准中,由MOV格式发展而来。从物理结构来说,文件是面向对象的,各原子具有明确的层次关系;
This paper provides the feature of smart card and the criterions for its application to PKI. A design project and its implementation example of CSP development based on smart card is presented in detail, which is consist of its file structure, access arrangement and key management. 文章简述了智能卡的特点和它在PKI中应用的协议标准,从文件结构、权限设置和密钥管理等方面给出了一种在智能卡上开发相应CSP的设计方案和实现实例。