Hardware Design Of Mobile Streaming Real-time Image Browsing Platform Based On DSP

With the popularization of wirelessbroadband network technology and high-performance audio and video standards (eg H.264) has introduced the use of wireless transmission technology to transmit real-time audio and video programs, multimedia application have become an important research direction; On the other hand, in the mobile value-addded business, based on CDMA, or GPRS wireless transmission technology, visit the business has become a major profit growth. Based on the above two points, Which based on embedded systems as a platform and combined with the wireless transmission technology allows multimedia information collected by embedded devices quickly and easily transmitted to the mobile terminal.This paper is designed a platform for mobile streaming real-time browsing image based on TMS320DM647 type of DSP multimedia processor as the core with TVP5154PNP and SAA7121 video decoder chip, TLV320AIC33IZQE stereo audio codec, 88E1111-2 Ethernet transceiver etc and achieved a eight-SD and one HD video capture, four audio collection, all the way audio and video transmission, network transmission, mobile real-time access to image functions, as opposed to the traditional PC network server bulky, vulnerable network virus attacks, on the erection of the drawbacks of higher environmental requirements has improved. And it can reduce the contradiction between quality of image and transfer rate, convenienting for updata and satisfying the demand for the practical application.The mission of this thesis is the wireless transmission technology, DSP technology and embedded video monitoring system developed for simple sintroduction, combined with this issue and montoring and selection of design; Expatiate based on DSP real-time image of the cell phone browser platform hardware design, including image acquisition, image output, audio collection and output, network transmission module, such as schematic drawing; After analyse the milt-power system and milt-clock system and give the effective and exercisable method. This article describes a simple DSP-driven model of peripheral, including the DM647 startup mode and means of transmission, Startup mode and structure of EDMA based on DM647. It is designed the initialize for EMIF IIC and the code chip thtough the IIC. In this paper, DDK-driven model was introduced and designed of the video port driver. Finally, the driver of the USB interface has been designed.