Patent ID: 6740859
Filing Date: 2004-05-25
Classification: H01J

Abstract:
A resistive readout system for imaging detectors comprising: a readout display; and, one or more pairs of readout circuits, wherein each pair of readout circuits comprises an X readout circuit and a Y readout circuit, each X readout circuit receiving a row of outputs from an imaging detector and each Y readout circuit receiving a column of outputs from the imaging detector, each pair of readout circuits comprising:an X subtractive circuit comprising: amplifiers that receive the row of outputs from the imaging detector, subtraction circuitry that receives a row of signals from the amplifiers, determines a value that is equal to a fraction of a sum of the received signals, and subtracts the value from each signal; single voltage supply rail to rail amplifiers that only transmit one polarity of a result of the subtraction, and, a combining circuit that receives unipolar signals from the rail to rail amplifiers and combines the unipolar signals to produce two X subtractive circuit outputs; and a Y subtractive circuit comprising: amplifiers that receive the column of outputs from the imaging detector; subtraction circuitry that receives a column of signals from the amplifiers, determines a value, equal to a fraction of a sum of the received signals, and subtracts the value from each signal; single voltage supply rail to rail amplifiers that only transmit one polarity of a result of the subtraction; and, a combining circuit that receives unipolar signals from the rail to rail amplifiers and combines the unipolar signals to produce two Y subtractive circuit outputs; wherein, the two X subtractive circuit outputs and the two Y subtractive outputs are sent to and received by the readout display.