High-speed data transfer protocol based on custom Ethernet frame and its application in imaging system
一种基于自定义以太网帧的高速数据传输协议及在成像系统中的应用*

For disadvantage of lower transmission speed which exist in embedded imaging system using TCP/IP protocol stack, this paper proposed a new communication method which package the image data in custom Ethernet frame for transmission. This paper defined 3 kinds of frames which are used to start the exposure, data transmission, data retransmission, and designed a control method based on state machine for camera control and image data transmission. To achieve this method on the hardware platform which using the NiosII embedded processor, test the network communication speed and make it compare with the speed of the system based on TCP/IP protocol stack, found that the increase of the speed is more than 4 times. This communication method is particularly suitable for the embedded imaging system which has limited hardware resources and high requirements of transmission rate.