Based On DSP Video Compression System's Realization

There are many ways to implement image compression. Now, people are concerning the DSP-based system for its advantages, such as : off-line image as a system programmable, a good system scalability and equipment small in size, the advantages of flexible.This paper researched DSP-based image compression, stressed that the realization of hardware: analog camera to achieve image acquisition, using a dedicated chip Philips SAA7111 will be collected after the simulation of digital image data, the complex programmable logic devices CPLD (In this paper, EPM7128LC84-15 achieved) after decoding data storage, storage, data from the DSP (TMSVC5402) read to the DSP's internal RAM area compression algorithm processing, data processed by the DSP HPII transferred to the PC. This paper involved the use of SAA7111, for the entire circuit and the logic of the work of decoding the use of EPM7128LC84-15, DSP allocation of resources, the process of loading film, read the chip data, compression algorithm of choice and comparison , HPI-8 applications, transfer to the PC and the realization of 3.3 V and 5 V mixed logic, and other issues.The full text is divided into seven chapters. As outlined in Chapter 1, Chapter II system for the principle and process description, the third to the sixth chapter detailed analysis of the various components of the system and the principle of achieving, on the basis of Chapter VII of the full text of a summary.