How Analog Color TV Works: The Beginnings

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模拟电视加上彩色时，新接收机要能还原颜色，旧接收机也仍要显示自然的亮暗。讲者用只发送某个颜色的反例，说明带宽和既有接收设备如何共同约束编码设计。

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The reason for the fussing about had to do with compatibility.

Picking just one color would produce a very unnatural image on the black and white set.