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To: Users,ImplementersandSDOsthatreferenceCTA‐861,ADTVProfileforUncompressed
High‐SpeedDigitalInterfaces
From:CTA
Date: November28,2017
Subject: CTA‐861‐G
YouarebeingcontactedasyouhavepreviouslyobtainedacopyCTA‐861‐E,ANSI/CTA‐861‐For
ANSI/CTA‐861‐G.Thesedocumentshavebeenrevisedfromtheiroriginalpublishedversionsto
removereferencestoAdobe.Thecompanyinquestionrequestedthischange,citingthefactthat
itscompanynameistrademarked.Thespecificrevisionsthathavebeenmadeinclude:
2.1.2.1 Removalofinformativereference89
2.2 Thetermdefinedas“theoptionalRGBcolorspacedefinedinIEC61966‐2‐5”was
renamed“opRGB.”
2.2 Thetermdefinedas“theluma‐chroma‐chroma(YCC)colorspacedefinedinAnnex
AofIEC61966‐2‐5.TheITU‐RBT.601colorconversionmatrixisusedtotransform
RGBvaluestoYCCvalues”wasrenamed“opYCC
601
.”
5.2.1 Thenewterm“opYCC
601
”replacedacompanyspecificreference.
5.3 Thenewterm“opYCC
601
”replacedacompanyspecificreference.Also,thenew
term“opRGB”replacedacompanyspecificreference.
Table13 Thenewterm“opYCC
601
”replacedacompanyspecificreference.Also,thenew
term“opRGB”replacedacompanyspecificreference.
Table14 Thenewterm“opYCC
601
”replacedacompanyspecificreferenceinthreeplaces.
Also,thenewterm“opRGB”replacedacompanyspecificreference.
6.4 Thenewterm“opYCC
601
”replacedacompanyspecificreference.Also,thenew
term“opRGB”replacedacompanyspecificreference.
Table70 Thenewterm“opYCC
601
”replacedacompanyspecificreference.Also,thenew
term“opRGB”replacedacompanyspecificreference.
Table71 Thenewterm“opYCC
601
”replacedacompanyspecificreference.Also,thenew
term“opRGB”replacedacompanyspecificreference.
7.5.6 Thenewterm“opYCC
601
”replacedacompanyspecificreferenceintwoplaces.
Also,thenewterm“opRGB”replacedacompanyspecificreference.
NootherchangeshavebeenmadetoCTA‐861‐Gtoday.Pleasenotethatthereisalsoanerratum
datedSeptember13,2017.
UsersarecautionedthatimplementationofAdobeRGB(1998)requirescompliancewithAdobe
RGB(1998)ColorImageEncoding,Version2005‐05,May2005,AdobeSystemsIncorporated.Any
useofthenameAdobeRGBmustbeareferencetotheAdobeRGB(1998)colorspaceandcolor
encodingsasdefinedexclusivelybyAdobe,andCTA‐861adoptersshouldnotusetheAdobeRGB
trademarkinconnectionwiththeirimplementationsofthatstandard.
UsersinterestedininformationabouttheimplementationofAdobeRGBshouldcontactAdobe‐
use@adobe.com.
To:UsersofCTA‐861‐G,ADTVProfileforUncompressedHighSpeedDigitalInterfaces
From:CTATechnology&StandardsDepartment
Date:September13,2017
Subject:AVIInfoFrameVersionErrata
PleasenotethatthereareseveralerrorsinthepublishedversionofCTA‐861‐G(November2016).
Changedpageswiththecorrectionsareprovided.Weapologizeforanyinconvenience.
•Page54,Section6.4,lastsentenceofparagraphprecedingTable8–Twosentencesremoved:
“AVersion3AVIInfoFrameshallbeusedandtheVersionfieldsetto0x03(indicatingthattheSinkshall
decodetheadditionalmost‐significantbits)whenevereitherofthemost‐significantbitsY2orVIC7are
setto'1'.IfbothY2andVIC7aresetto'0',thenaVersion2AVIInfoFrameshallbeusedandtheVersion
fieldshallbesetto0x02(indicatingthattheSinkdoesnothavetodecodetheadditionalmost‐
significantbits).”
•Page54,Section6.4,followingTable9–Sixnewparagraphsandalgorithmpseudocodeaddedafter
thelastparagraph
“AllfieldsoftheVersion4AVIInfoFramearedescribedinTable9.AllfieldsoftheVersion4AVI
InfoFramearethesameasVersion3AVIInfoFrame,exceptfortheInfoFrameVersionNumber,Length
ofAVIInfoFrame,andadditionalDataByte14.”
asfollows:
“
SinksthatsupportAVIInfoFramesshallincludesupportforAVIInfoFrameVersion2.
SinksimplicitlyadvertisesupportforVersion3AVIInfoFramesbydeclaringsupportforVIC≥128orY=7
orboth.
SinksimplicitlyadvertisesupportforbothVersions3and4AVIInfoFramesbydeclaringsupportforany
standardindicatedbyACE(AdditionalColorimetryExtensionlistedinTable25)intheirColorimetryData
Block(Table70).SinksthatsupportAVIInfoFrameVersion4shallalsosupportAVIInfoFrameVersion3.
SourcesshallnotsendAVIInfoFrameVersion3toSinksthatdonotindicatesupportforAVIInfoFrame
Version3asdescribedabove.
SourcesshallnotsendAVIInfoFrameVersion4toSinksthatdonotindicatesupportforAVIInfoFrame
Version4asdescribedabove.
WhenY2=0,thefollowingalgorithmshallbeusedforAVIInfoFrameversionselection:
if(C=3andEC=7)
SourcesshalluseAVIInfoFrameVersion4.
Elseif(VIC≥128)
SourcesshalluseAVIInfoFrameVersion3.
Else
SourcesshalluseAVIInfoFrameVersion2.
Endif
“
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