Picture data input system and picture data input device in picture transfer display for telephone
专利汇可以提供Picture data input system and picture data input device in picture transfer display for telephone专利检索，专利查询，专利分析的服务。并且PURPOSE: To reduce memory capacity and to shorten transmitting time by dividing the video signal of a photographed self-portrait into a luminance signal and two color difference signals, sampling the luminance signal at a prescribed sampling period, storing it in a memory, sampling the color difference signals less than the luminance signal, sampling them and storing them in the memory.
CONSTITUTION: The video signal of the self-portrait photographed by a television camera part is inputted to a luminance signal A/D converting part 2 and a multiplexer 4 as a luminance signal Y and two color difference signals R-Y and B-Y. There, the luminance signal having a great influence on picture quality is sampled at the prescribed period and converted into digital data, on the other hand, the two color difference signals are thinned at prescribed intervals, sampled and converted into the digital data. Consequently, data quantity decreases for the thinning ratio of the color difference signals and the information quantity of a color picture is compressed. Thus, the memory capacity is reduced and at the same time, the transmitting time of picture data can be shortened.
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