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Logarithmic single-slope analog digital convertor, Image sensor device and Thermometer using the same, and Method for logarithmic single-slope analog digital converting
Logarithmic single-slope analog digital convertor, Image sensor device and Thermometer using the same, and Method for logarithmic single-slope analog digital converting
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机译:对数单斜率模拟数字转换器,使用其的图像传感器装置和温度计以及对数单斜率模拟数字转换器的方法
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摘要
PURPOSE: A nonlinear single slope AD converter, an image sensor device using the same, a temperature sensor device using the same and a nonlinear slope AD conversion method are provided to acquire reliable nonlinear characteristics by using a digital circuit. CONSTITUTION: A ramp generating part generates a ramp input having a set gradient. A comparator(110) compares an input voltage with the ramp input. A control block(120) transfers information about a comparison time point between the input voltage and the ramp input to a memory unit(140). The control block generates the signal saved in the memory unit or the signal for calling information. The nonlinear counter generates a signal with difference sampling frequencies from inputted clock signals.
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