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介绍了一种以DSP为核心的图像系统中 ,以FPGA为数据采集逻辑控制单元 ,用DSP控制实现了黑白全电视信号图象数据采集。在介绍了系统组成原理的基础上 ,详细讨论了采集部分的结构和FPGA的控制逻辑 ,DSP响应中断实现数据转移和存储。采用FPGA实现视频信号数据采集 ,可提高系统性能 ,同时具有适应性与灵活性强 ,设计、调试方便等优点。通过系统成像实验 ,已获得清晰的图象。
This paper introduces a DSP - based image system, with FPGA as the data acquisition logic control unit, with DSP control to achieve a black and white full - video signal image data acquisition. Based on the introduction of the principle of system composition, the structure of the acquisition part and the control logic of FPGA are discussed in detail, and the data transfer and storage are realized by DSP in response to the interruption. The use of FPGA to achieve video signal data acquisition, can improve system performance, and has the advantages of adaptability and flexibility, design, commissioning and other advantages. Through systematic imaging experiments, clear images have been obtained.