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针对三值光计算机解码模拟器需要对光学运算器的运算结果进行高速、可靠、实时地采样、A/D转换和图像采集问题,设计研制了一个USB型图像采集系统。该系统以嵌入式微处理器S3C44B0X和CMOS图像传感器OV7660为核心。前端图像光信号采样、A/D转换和数字数据输出处理采用CMOS图像传感器OV7660完成,后端的图像采集和传输采用嵌入式微处理器S3C44B0X和USB2.0,使系统具有高速、实时和连接灵活方便的特点。为保证图像采集和传输的可靠性,采用了事务处理机制。实验结果表明,系统工作稳定、性能良好,处理速度可达20MB/s。
For the ternary computer decoding simulator, we need a fast, reliable, real-time sampling, A / D conversion and image acquisition of the optics computing results. A USB image acquisition system is designed and developed. The system with embedded microprocessor S3C44B0X and CMOS image sensor OV7660 as the core. Front-end image optical signal sampling, A / D conversion and digital data output processing CMOS image sensor OV7660 to complete the back-end image acquisition and transmission using embedded microprocessor S3C44B0X and USB2.0, the system has high speed, real-time and flexible connection convenience Features. To ensure the reliability of image acquisition and transmission, a transaction processing mechanism is adopted. The experimental results show that the system works stably with good performance and processing speed up to 20MB / s.