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專利授權區
專利名稱(英)	Exponential-Logarithmic Analog-to-Digital Converter
專利家族	中華民國：I446727 美國：8,542,140
專利權人	國立清華大學 100%
發明人	陳永展,詹欣琦,陳新
技術領域	電子電機

專利摘要(英)
An analog to digital converter by using an exponential-logarithmic model includes an exponential circuit which acquires an analog input voltage and generates an analog output voltage that is an exponential function of the input voltage. A positive feedback circuit that succeeds the exponential circuit exhibits a natural logarithmic characteristic. A comparator is connected to the positive feedback circuit to compare an output voltage of the positive feedback circuit with a reference voltage. Via the exponential-logarithmic conversion technique, the time interval or pulse produced by the positive feedback circuit is a linear function of the magnitude of the input voltage. Based on the comparator output, a counter is employed to translate the analog input signal to its digital representation.

專利摘要(英)

An analog to digital converter by using an exponential-logarithmic model includes an exponential circuit which acquires an analog input voltage and generates an analog output voltage that is an exponential function of the input voltage. A positive feedback circuit that succeeds the exponential circuit exhibits a natural logarithmic characteristic. A comparator is connected to the positive feedback circuit to compare an output voltage of the positive feedback circuit with a reference voltage. Via the exponential-logarithmic conversion technique, the time interval or pulse produced by the positive feedback circuit is a linear function of the magnitude of the input voltage. Based on the comparator output, a counter is employed to translate the analog input signal to its digital representation.

聯絡資訊
承辦人姓名	李曉琪
承辦人電話	03-5715131 #31061
承辦人Email	hsiaochi@mx.nthu.edu.tw