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Linux下SPI转USB驱动，基于沁恒ch374芯片(Linux SPI USB driver based on ch374 chip)

提出了一种基于样本的分级检索 MPEG 视频的新方法:首先用I 帧的dct_dc_size 字段快速粗检,然后用断层摄影(tomography)法分析B 帧运动矢 量的时空分布特性以进一步缩小结果集,最后用DC 图像的精确匹配方法验证检索结果.试验结果表明,本方法 所需计算量较小,且可保证较高的检索精度.-presents a sample classification based on MPEG video retrieval of the new method : First of all I frame with the rapid field dct_dc_size rough Frederick, and then use tomography (tomography) Analysis of B pictures motion vector space-time distribution to further narrow the results set, and DC Images precision Matching test results retrieval. test results showed that the calculation method for small and can guarantee higher retrieval accuracy.

属于C++里继承与派生类的小程序，主要是多层派生里的指针继承问题，仅供参考(Belonging C++ inheritance and derived classes in a small program, mainly derived pointers in multilayer succession for reference purposes only)

一些数学算法的实现-some mathematical algorithms to achieve the

说明：  智慧社区能量管理，光伏以及电动汽车结合，在电动汽车充电站设置光伏发电实现结合(Intelligent Community Energy Management)

说明：  通过宏程序，自定义几何体前缀，批量修改几何体和几何体图形集名称(Rename name of body by macro)

modify alv subtotal text

说明：  borderland 2 trainer

水声到达角估计算法中，引入了相位误差的概念，分析相位误差对估计的影响。(In underwater acoustic DOA estimation algorithm, the concept of phase error is introduced to analyze the influence of phase error on estimation.)

说明：  BP神经网络实现电机控制，还应用到了模糊算法(Motor control based on BP neural network)