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在焦平面图像红外无线传输系统中,通过引入边沿位置调制(EPM)方式来代替传统的脉冲位置调制方式,提高了传输带宽效率。提出了基于反熔丝FPGA的EPM调制低功耗实现方案,包括输入接口、缓冲器与RLL(5,12)编码状态机的设计,以及数据恢复、脉冲提取等EPM解调关键技术的解决方案。实验系统利用EPM调制方式,在24MHz带宽条件下实现了320×240像素视频数据的低功耗红外无线实时传输,促进了焦平面图像红外无线输出的进一步实用化。
In the focal plane image infrared wireless transmission system, the introduction of edge position modulation (EPM) instead of the traditional pulse position modulation to improve the transmission bandwidth efficiency. The low power consumption scheme of EPM modulation based on antifuse FPGA is proposed, including the design of input interface, buffer and RLL (5,12) coding state machine and the key technologies of EPM demodulation such as data recovery and pulse extraction . Experimental system uses EPM modulation mode, realizes the low-power infrared wireless real-time transmission of 320 × 240 pixel video data under the condition of 24MHz bandwidth, and promotes the further practical application of infrared wireless output of focal plane image.