Technology of Q 2500 colour TV set
Technology of Q 2500 colour TV set
Technology of Q 2500 colour TV set
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<strong>Technology</strong> <strong>of</strong> Q <strong>2500</strong> <strong>colour</strong> <strong>TV</strong> <strong>set</strong>SAA 4993 block diagramFM2FM3*YBYC YD YEVADNRCompress.Decompr.SequencermuxmuxPDAPCLPInterfaceControlLeft MPRAMDeinterlagerVec.SPM TPMESMPix-PeakRight MPRAMVert. PeakingVert.ZoomYFYGMotion EstimatorVec.Unconversion* (SAA 4994 does not controlFM3)Principle noise suppressionSimply expressed the noise suppression systemconsists <strong>of</strong> the current half picture signal,in which components <strong>of</strong> the previous signalare mixed. The composition <strong>of</strong> the output signal,that is the number <strong>of</strong> components <strong>of</strong> thedirect and the number <strong>of</strong> components <strong>of</strong> thedelayed half picture, are determined by theso-called K factor. This K factor is determinedby integrated automation.YSettingDNR YK+When using the automation the K factor isdependent on the movement between the halfpictures. If there is a lot <strong>of</strong> movement, noisesuppression is not very effective.K factor1- KPicturememory2Document Q <strong>2500</strong> 97 © Loewe ProCollege
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