计算机应用 ›› 2010, Vol. 30 ›› Issue (1): 259-262.

• 典型应用 • 上一篇    下一篇

3G智能卡文件系统的研究与设计

尹伟1,李代平2,郭鸿志2,梅小虎3   

  1. 1. 广东工业大学计算机学院
    2.
    3. 广东工业大学
  • 收稿日期:2009-07-07 修回日期:2009-08-15 发布日期:2010-01-01 出版日期:2010-01-01
  • 通讯作者: 梅小虎
  • 基金资助:
    广州市越秀区自然科技基金资助项目

Research and design of 3G file system for smart card

Dai-ping LI2,Hong-zhi GUO2,Xiao-hu MEI2   

  • Received:2009-07-07 Revised:2009-08-15 Online:2010-01-01 Published:2010-01-01
  • Contact: Xiao-hu MEI

摘要: 对基于Flash的3G智能卡文件系统的研究与设计,引用了数据库日志技术和掉电保护机制,保证了智能卡文件系统可靠性,数据的一致性和完整性;按字节静态分配存储空间、合理有效地回收与重用碎片空间,提高了存储空间的利用率;平均磨损和页面映射技术的使用延长了Flash的使用寿命;有效的存储设计提高了数据检索的速度,从而提高了智能卡的整体性能。测试证实了该文件系统设计适合3G EVDO卡。

关键词: 文件系统, 空间回收, 页面映射, 掉电保护

Abstract: Research and design of three generation file system for smart card on flash memory were made, introducing log technology and power failure protection to assure smart cards file system reliability, data consistency and integrality. Memory space was assigned according to byte. Mechanisms of valid space collection and reuse improve the using rate of memory space. Technology of wear leveling and page mapped prolong the flash storage life-span, and the design of efficiency memory management improves the rate of data retrieval. Consequently, the whole performance of smart card is strengthened. The simulation makes sure the file system fit 3G EVDO card.

Key words: file system, space collection, page mapping, power fail protection