Multimedia Collection and Transmission Based on ARM11 Embedded Wireless Terminal Device

This paper presents an embedded terminal design based on ARM11 to implement multimedia information sharing and relay transmission between wireless terminal devices. Multimedia collection and wireless transmission to each other are easy to be realized based on an embedded board combined with a CMOS camera module and a SDIO wifi module. After the procedure of installation of cross complier on PC, and transplantation of bootloader, linux kernel and file system on board, through programming application based on V4L2, the camera can be controlled to capture a picture, which is compressed into jpeg format by calling libjpeg, another application is applied to wirelessly send pictures to each other through TCP socket network programming between two embedded devices. This design can widely be used in fields like modern security, monitor system for safety production, cloud camera and so on. Keywords-ARM11; multimedia collection and wireless transmission; V4L2; libjpeg; socket