4：2优先编码器的VHDL代码

FPGA驱动TCD1304AP线阵CCD，并经采集将数据通过串口传输至上位机(FPGA drives TCD1304AP linear CCD, and by collecting the data transmitted through the first bit machine serial)

说明：  HDMI做为视频输出输入接口已经广泛使用很长时间，主要通过TMDS差分编码传输。本实验通过在HDMI屏幕上显示彩条和输入输出环通实验，来练习视频的时序和视频颜色的表示，为后面视频处理实验做个基础。(HDMI as video output input interface has been widely used for a long time, mainly through TMDS differential coding transmission. In this experiment, by displaying color bars and input/output loop experiments on HDMI screen, video timing sequence and video color representation are practiced to lay a foundation for video processing experiments later)

使用FPGA来控制DDS信号的产生，从而达到高频信号产生的目的。使用的DDS芯片为AD9852，在QuartusII下编写。(Using the FPGA to control the DDS signal generation, so as to achieve high-frequency signal generation purposes. Use of DDS chip AD9852, in the QuartusII prepared.)

This programa execute calc of CRC by use a table.

FPGA与DAC芯片的SPI接口驱动，实现串行数据的传输。(Realizing the communication between FPGA and DA chip)

本文件时VHDL的各种编写规范，有助于开发者在平时养成好的编码习惯(This document, the various write VHDL specification, helps developers to develop good coding habits in peacetime)

I2C的实现，可以扩展进而控制有关I2C的器件达到操作员的控制目的。(I2C implementations, can be extended further having control of the I2C device operator control purposes.)

用verilog写的各种实用的分频器，很好的参考例子。-Using Verilog to write a variety of practical divider, a good reference example.

本例程位于 VMD642_CPLD目录中。 使用 CPLD 实现辅助译码、LED 指示灯控制、看门狗等各种逻辑控制电路。源程序使 用 Verilog HDL书写，编译开发系统使用 Cypress公司的 Warp 6.3。(This routine is located VMD642_CPLD directory. Using CPLD implementation auxiliary decoding, LED indicator control, watchdog, and other logic control circuitry. Written using Verilog HDL source code, the compiler development system using Cypress' s Warp 6.3.)

此设计采用Verilog HDL硬件语言设计,在掌宇开发板上实现. 将整个电路分为两个子模块，一个提供同步信号（H_SYNC和V_SYNC）及像素位置信息；另一个接收像素位置信息，并输出颜色信号。这样便于进行图形修改，同时也容易实现- This design uses Verilog the HDL hardware language design, realizes on the palm space development board Divides into two stature modules the entire electric circuit, provides the synchronized signal (H_SYNC and V_SYNC) and the picture element positional information; Another receive picture element positional information, and output color signal. Like this is advantageous for carries on the graph to revise, simultaneously is also easy to realize