GE IS200RCSBG1BAA

     解码器的发展，经历了标清解码器、高清解码器两个阶段，对应于前端设备的高清化历程。那么，高清解码器相比较标清解码器的特点和优势在哪里？

    1、高清解码。最主要的一点，解码分辨率从标清的D1，提升到了高清的720P/1080P,甚至于达到300万、500万像素。前端编码分辨率的提升，必然要求解码器的解码能力作相应的提升。

    2、高清显示。高清，并不仅仅在于高清解码，还需要高清显示。标清解码器一般的输出接口为VGA和BNC，BNC只能达到D1的输出效果，VGA也只能达到720P的输出效果。而高清解码器，一般的输出接口为HDMI或DVI，可以达到1080P的显示效果。

    3、大屏拼接。在标清解码器阶段，电视墙一般为监视器，而到了高清解码器阶段，电视墙已经升级到了大屏幕。虽然高清解码器单个输出接口已经达到1080P的显示效果，但大屏幕拼接墙要求的是完整的显示一幅超高分辨率的图像。所以，高清解码器就必须具备大屏拼接功能，把一个输入高清源通过多个高清输出接口，完整的投射到一个大屏幕上

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