本文基于硅芯片调谐器XC3028和视频处理器SAA7111设计了一种具有无线电视接收功能的LCoS头盔显示系统.该系统由无线电视接收电路、视频处理电路、音频处理电路和LCoS显示屏组成,在有无外置视频输入源的情况下均可工作.首先,对系统的总体方案做了全面描述.然后,从硬件角度详细介绍了系统各部分功能和设计方案.最后,运用模块化设计方法完成系统软件设计.实验结果表明,整个系统设计合理、工作稳定、显示效果清晰.电路尺寸只有46 mm×54 mm,总功耗仅为1.9W.该系统具备体积小,功耗低、结构简单等特点,在移动视频终端领域将有更广泛的使用价值和推广前景.
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