该方案采用对ide硬盘的直接读写技术，直接将视频数据记录在硬盘上并形成FAT32文件格式。
This method records video data on hard disk directly with FAT32 file format by direct operating ide interface.
之所以将这种技术称之为 “开销较低的读-写锁” 是因为您使用了不同的同步机制进行读写操作。
The reason this technique is called the "cheap read-write lock" is that you are using different synchronization mechanisms for reads and writes.
真实的应用程序会使用信号量或其他技术控制对共享内存段的读写。
A real application would use semaphores or other techniques to control reading and writing to the Shared segment.
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