Chapter 55-20F-5-46[1] 1st half even-numbered pixel analog image signal[2] 1st half odd-numbered pixel analog image signal[3] 2nd half even-numbered pixel analog image signal[4] 2nd half odd-numbered pixel analog image signal[5] 1st half digital image signal[6] 2nd half digital image signal2. Digital Image Processing- shading correctionF-5-47[1] 1st-half digital image signal[2] 2nd-half digital image signal5.3.6.2 Overview 0011-2248iR7086The PCBs used in the image processing system have the following functions:CDD/AP PCB: CCD drive, analog image processing, A/D conversionReader controller PCB: shading correctionF-5-481. Analog Image processing- CCD drive- CCD output gain correction, offset correction- CCD output A/D conversionCCDAnalog imageprocess- gain correction- offset correctionA/DconversionAnalogimagesignalCCD/AP PCBCCD drivecontrolGain correctiondata20bitJ101 J20420bitCCD controlsignalA12VA5VGain correctiondata[2] [1][2]Analog imageprocess- gain correction- offset correction[3][4][5][6][4] [3]J102 J208[1]A/DconversionGain correction data EEP-ROMSRAMCPUCCD/APPCBReader controller PCB20bit 8bitTargetvalueJ101 J204[1][2][1][2]Shading correctionJ102 J208J20220bit 8bitCCD/AP PCBReader controllerPCBCCDA/Dconversion Shading processingAnalog imageprocessingAnalog image processing blockControllerblockDigital image processing block
