正弦信号发生器（可扫频）通过验证 正弦信号发生器

说明：  在FPGA上实现CAN总线SPI接口通信，使用Verilog语言(Realize SPI interface communication of CAN bus on FPGA, using Verilog language)

显示频率测量，外接24MHz晶振，显示数据为三位，分四个档来测量-show frequency measurement, external 24MHz crystal oscillator, the data show that three, four hours to measure stalls

verilog写的LnE算法，可用于计算指数和对数(Verilog written in LnE algorithm, can be used to calculate the index and the logarithm)

图像滤波中的中值滤波，有效滤除椒盐噪声，使用verilog语言编写(Image filtering in the median filter, effectively filter out salt and pepper noise, using verilog language)

比较详细的阐述了图像压缩的原理,并基于DSP和VHDL实现该系统,最后在FPGA上通过.(More detailed exposition of the principles of image compress, and VHDL-based implementation of the system, and finally in the FPGA.)

half band filter code

三相PWM整流，实现功率双向流动,可保持直流侧电压稳定(three-phase PWM rectifier, power can bidirectional flow ，can maintain the stable DC voltage)

说明：  高斯最小频移键控（Gaussian Filtered Minimum Shift Keying），这是GSM系统采用的调制方式。数字调制解调技术是数字蜂窝移动通信系统空中接口的重要组成部分。GMSK调制是在MSK（最小频移键控）调制器之前插入高斯低通预调制滤波器这样一种调制方式。GMSK提高了数字移动通信的频谱利用率和通信质量。(Gauss Filtered Minimum Shift Keying is a modulation method used in GSM system. Digital modem technology is an important part of air interface of digital cellular mobile communication system. GMSK modulation is a method of inserting a Gaussian low-pass pre-modulation filter before the MSK (minimum frequency shift keying) modulator. GMSK improves the spectrum utilization and communication quality of digital mobile communication.)

用于sopc builder添加组件用的ps/2 键盘 ipcore-Sopc builder used to add components used ps/2 keyboard IPCore

程序在报告中，要　用QuartusII运行，注意从word到运行环境中，可能有个别符号不兼容，重新在运行环境中输入那些符号就可以了-procedures in the report, with QuartusII operations, the attention to word from the operating environment, Some individual symbols are not compatible, the operating environment to re-enter those symbols on the