A Low-Power A/D Conversion Technique Using Correlation of Moving Pictures (Special Issue on Integrated Electronics and New System Paradigms)
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概要
- 論文の詳細を見る
This paper presents a low-power video A/D conversion technique using features of moving pictures. Neighboring frames in typical video sequences and neighboring pixels in each video frame are highly correlated. This property is effectively used for the video A/D conversion to reduce the number of comparators and the resulting power consumption. A set of reference voltages is given to a comparator array so that the iterative A/D conversion converges in the logarithmic order of the prediction error. Simulation results using standard moving pietures showed that the average number of iterations for the A/D conversion is less than 3 for all the moving pictures tested. In the proposed 12 b A/D converter, the number of comparators can be reduced to about 1/5 compared with that of the two-step flash A/D converters, which are commonly used for video applications. The A/D converter is particularly useful for the integration to CMOS image sensors.
- 社団法人電子情報通信学会の論文
- 1999-09-25
著者
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Tadokoro Yoshiaki
Department Of Information And Computer Sciences Toyohashi University Of Technology
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Kawahito Shoji
Department Of Electrical And Electronic Engineering Toyohashi University Of Technology
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NAKA Junichi
Department of Information and Computer Sciences, Toyohashi University of Technology
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Naka Junichi
Department Of Information And Computer Sciences Toyohashi University Of Technology
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