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Chapter 5 Reference
5-3 Glossary
Clock
The analog input monitor needs to reproduce a clock of the same frequency as the dot clock of the graphics system in
use,whentheanaloginputsignalisconvertedtoadigitalsignalforimagedisplay.
Thisiscalledclockadjustment.Iftheclockpulseisnotsetcorrectly,someverticalbarsappearonthescreen.
DDC/CI (Display Data Channel/Command Interface)
VESAprovidesthestandardizationfortheinteractivecommunicationofthesettinginformation,etc.betweenaPC
andthemonitor.
DVI (Digital Visual Interface)
DVIisadigitalinterfacestandard.DVIallowsdirecttransmissionofthePC’sdigitaldatawithoutloss.
ThisadoptstheTMDStransmissionsystemandDVIconnectors.TherearetwotypesofDVIconnectors.Oneis
aDVI-Dconnectorfordigitalsignalinputonly.TheotherisaDVI-Iconnectorforbothdigitalandanalogsignal
inputs.
DVI DMPM (DVI Digital Monitor Power Management)
DVIDMPMisadigitalinterfacepower-savingfunction.The“MonitorON(operatingmode)”and“ActiveOff
(power-savingmode)”areindispensableforDVIDMPMasthemonitor’spowermode.
Gain
Thisisusedtoadjusteachcolorparameterforred,greenandblue.AnLCDmonitordisplaysthecolorbythelight
passingthroughthepanelcolorlter.Red,greenandbluearethethreeprimarycolors.Allthecolorsonthescreen
aredisplayedbycombiningthesethreecolors.Thecolortonecanbechangedbyadjustingthelightintensity(volume)
passingthrougheachcolor’slter.
Gamma
Generally, the monitor brightness varies nonlinearly with the input signal level, which is called “Gamma
Characteristic”.Asmallgammavalueproducesalow-contrastimage,whilealargegammavalueproducesahigh-
contrastimage.
HDCP (High-bandwidth Digital Contents Protection)
Digitalsignalcodingsystemdevelopedtocopy-protectthedigitalcontents,suchasvideo,music,etc.Thishelps
to transmit the digital contents safely by coding the digital contents sent via DVI terminal on the output side and
decodingthemontheinputside.
Any digital contents cannot be reproduced if both of the equipments on the output and input sides are not applicable
toHDCPsystem.
Phase
Phasemeansthesamplingtimingtoconverttheanaloginputsignaltoadigitalsignal.Phaseadjustmentismadeto
adjustthetiming.Itisrecommendedthatphaseadjustmentbemadeaftertheclockisadjustedcorrectly.
Range Adjustment
Rangeadjustmentcontrolsthesignaloutputlevelstodisplayeverycolorgradation.Itisrecommendedthatrange
adjustmentbemadebeforecoloradjustment.
Resolution
TheLCDpanelconsistsofnumerouspixelsofspeciedsize,whichareilluminatedtoformimages.Thismonitor
consistsof1680horizontalpixelsand1050verticalpixels.Ataresolutionof1680x1050,allpixelsareilluminated
asafullscreen(1:1).