| With the development of embedded technology, GPS navigation product in automobile electronic technology industry has been widely used. However, the common mobile navigation terminal function is relatively simple without multi-media function, it is hard to meet the market demand of humanized navigation terminal. So, development with multimedia capabilities of mobile navigation terminal products has become automobile electronic technology industry's urgent needs.The handheld intelligent GPS P760 navigation based on processor S3C6400 is a smart terminal equipment. It has a low power consumption of continuous navigation performance,efficient information processing capability and real-time networking communications properties and so on. At the same time to support multimedia features, the terminal equipment provided a lot of interface to realize the communication with external devices. Relying on the interfaces such as IIS,IIC,GPIO provided by the terminal equipment, designed and implemented a carmera module with two parts which are video information collection & decoding and audio information collection & decoding. And this module is the basis of multimedia function for the P760 navigation terminal.S5K4BAFX is a video information collection and camera sensors chip of GPS navigation terminal P760,which is accessed and controlled by IIC bus. It has the ability of processing complex image information . In order to realize the function of collecting navigation terminal video information , 3S5K4BAFX driver is designed by multithreading technology.WM8976 is a audio information collecting chip for GPS navigation P760, which is accessed and controlled by IIC bus and with the characteristics of low consumption and high quality . In order to realize the function of collecting navigation terminal video information , WM8976 chip driver is also designed by multithreading technology. |
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