| Television Meeting System and the Video telephone are contributing more to the long-distance commercial conference in many fields. When dealing with some accidental and random spot investigation or affairs concerning the public social safety, not only the relative staffs are asked to treat with in the locale, but also the distant leader and experts are asked to discuss the solution, such as in fighting against the flood or dealing with the project accident. In addition to the verbal report and data provided by the fieldworker, the visual pictures of spot are also vital for the distant staff Therefore, the long-distance real time video transmitting are needed.The main objective of this project is to capture, compress and wirelessly transmit the static video based on the embedded platform with 0V7620 camera module. The SEP3203 as the master chip are adopted as the hardware plat-form, which accomplish the capture of picture by connecting the 0V7620 shooting model group through the chief line. The wireless transmitting of data are completed with GPRS. This appliance can dial up by controlling the Siemens MC35i module, establish the point-to-point connection by running the PPP stack, and then wireless transmission of data is accomplished by establishing socks connection with target server.The relevant theory and rudimentary knowledge about the wireless video-capture system, the structure of software and hardware in this system and the implement of relevant driver are put forward in order. Finally, the implementation of wireless stack and the PPP stack are expatiated. The writer has participated in the compiling and testing of the driving program about the video capture and the compressed chip and the implement of wireless stack. This project aimed at providing a designing flat-form and reference for the better wireless transmission system, can be regarded as the practice of the development of embedded system. |
