| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of digitizing an analog quantity from an electromagnetic radiation detector. SOLUTION: The method of digitizing the analog quantity (V<SB>E</SB>) from the electromagnetic radiation detector including a matrix of elementary sensors, includes, for each line or column of the matrix, steps of: firstly integrating the analog quantity using an integrator stage; converting the integrated analog quantity (V<SB>S</SB>) to a first numerical value (B) via a binary counter and a memory element connected to the output terminal of a comparator stage; converting the first numerical value to an analog signal (V<SB>DAC</SB>); subtracting the analog signal (V<SB>DAC</SB>) from the analog quantity (V<SB>E</SB>); amplifying a subtraction (V<SB>E</SB>-V<SB>DAC</SB>) with a gain representing the first numerical value; secondly integrating to produce a second numerical value (M) proportional to an amplified analog signal "2<SP>B</SP>×(V<SB>E</SB>-V<SB>DAC</SB>)"; and adding the first and second numerical values to form a number "N" representative of the analog quantity (V<SB>E</SB>). COPYRIGHT: (C)2008,JPO&INPIT
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