使用IIC总线技术实现视频信息的采集,系统的开发采用了CMOS图像传感芯片OV7620和可编程逻辑阵列器件。OV7620的内部寄存器是通过IIC接口访问的。两根IIC总线分别是串行时钟线和串行数据线。FPGA产生IIC总线时序、对OV7620系统上电初始化和同步输入,使OV7620输出的采集信号达到图像压缩的要求。 The use of IIC bus technology to achieve the collection of video information, the system developed using CMOS image sensor chip OV7620 and programmable logic array devices. The OV7620’s internal registers are accessed through the IIC interface. Two IIC bus lines are serial clock lines and serial data lines. FPGA produce IIC bus timing, power on the OV7620 system initialization and synchronization input, so that the OV7620 output signal acquisition image compression requirements.