基于FPGA的扫描跟踪图像实时显示

Scanning Track Real-time Display Based on FPGA

以ALTERA公司StratixⅡ系列EP2S60F672I4N FPGA为处理核心,一路将所接收的图像数据经过Linkport模块进行时序转换后送入DSP,DSP在对图像数据处理后,计算出目标位置;另一路对所接收的图像数据在两块SRAM缓存下,以两块SDRAM组成的乒乓结构为存储单元,对不同模式下接收的16 bit图像数据实现了90°旋转,经过数据压缩,在接收到DSP所发送的目标位置后,在目标位置上进行字符叠加,并送入所配置的ADV7179显示时序后进行显示输出。最后对各个模块之间数据处理与相应的时序关系和显示中可能出现的问题进行了简要的分析。

In this article, Stratixll series EP2S60F67214N FPGA of ALTERA company is adopted as the processing core. One way proceeds timing conversion for the received image data through the Linkport module and then sends them to DSP,it will calculate the target position after the data processing of DSP. The other way rotates the 16 bit image data of different modes 90° in two SRAM caches, with Ping-Pang structure of them as the storage unit. Then the characters are overlayed at the sending target position of DSP by compressing the characters, and then the ADV7179 displaying timing is sent to output on the screen. Finally, the data processing between each module, the corresponding timing relationships and the problems in display respectively are all analyzed briefly.