The Design And Implement Of Video Compression System Based On TMS320DM642

A growing number of video compression standards offering increased compression efficiency and a wider variety of tools can be tailored for specific end applications. Also, the trend toward networked connectivity means that many products will have to support more than one standard. The proliferation of multiple standards and proprietary algorithms also makes it difficult to select one standard, especially since hardware decisions are often made far in advance of product deployment. With an increasing number of CODECs requiring support and options for optimizing the CODEC for specific scenarios and applications become broader, there is a trend toward flexible media processors in digital video systems. Digital media processors such as the TMS320DM642 processor, offer the performance headroom and architecture flexibility to quickly bring to market implementations of new standards including H.264, AVS and WMV9.The task of this paper is to develop a multimedia develop platform based on DM642, including hardware platform and software platform. The task of hardware platform development includes schematic design, PCB layout design, system assembling, testing of all function modules. The task of software platform development includes constructing DSP/BIOS multi-task environment on hardware system, programming DSP/BIOS drivers for all function modules on board, writing and debugging USB transmittal programs.