Sib txawv ntawm CVBS, AV, YPbPr, RCA interfaces

Sib txawv ntawm CVBS, AV, YPbPr, RCA interfaces

CVBS Interface yog hu ua "Color, Video, Blank and Sync", "Composite Video Baseband Signal", "Composite Video Burst Signal", lossis "Composite Video with Burst and Sync".

CVBS yog tus txheej txheem siv dav dav, tseem hu ua baseband video lossis RCA video, uas yog ib txoj kev siv cov ntaub ntawv keeb kwm kev sib txuas ntawm National Television Systems Committee (NTSC) lub xov xwm hauv TV, uas xa cov ntaub ntawv hauv analogue lub cev ntawv.

Nws yog ib hom kev ua ke uas siv cov duab digital TV (duab) nrog cov teeb liab suab paj nruag thiab hloov ua ntej ua ntej lub sijhawm Carrier RF. AV = AUDIO + VIDEO, qhov tseeb, VIDEO yog CVBS.

AV Interface composite video interface, tseem hu ua AV interface los Video interface, yog qhov feem ntau ntawm cov video interface, yuav luag tag nrho cov TV, DVD neeg uas ua ntawv cov khoom muaj no interface.

AV puas zoo nkauj video interface, yog ib qho analog interface. Nws yog ib qho video interface ntawm kev sib tawm suab thiab yees duab.

Nws muaj peb kab ntawm daj, dawb, liab ywj siab RCA ntsaws (tseem hu ua plum interface, RCA interface), uas yog V Interface mus txuas rau qhov sib xyaw ua yees duab sib xyaw, nws yog lub qhov ntsaws daj; L interface mus txuas rau sab laug channel lub teeb liab, nws yog dawb qhov ntsawb; R interface mus txuas rau txoj cai channel lub teeb liab, nws yog lub qhov liab liab. Vim hais tias cov teebmeem video tsis muaj nrog suab, cov tswv yim yees duab thiab Lub Chaw Txuas Lus tawm kuj muaj qhov nruab nrog cov tswv yim tawm tswv yim thiab qhov hluav taws xob (Audio In, Audio Out), thiaj li xa cov lus sib tshooj sib txuas nrog. Yog li no, qee zaum qhov video sib txuas lus tseem hu ua AV (Audio Video) chaw nres nkoj.

AV interface kom ua rau kev sib cais ntawm lub suab thiab cov yeeb yaj duab sib txuas, uas ua rau cov suab / yees duab sib cuam tshuam los ntawm cov duab zoo degradation, tab sis vim kev siv AV interface kuj tseem yog ib qho teebmeem kev yees duab ntawm tov ci (Y / C). Nws yuav tsum ua kom muaj kev sib cais thiab xim sib cais thiab chroma decoding mus kuaj, tov thaum xub thawj, ces txoj kev sib cais yuav ua rau teeb liab los yog distortion, chroma teeb liab thiab ci teeb liab yuav muaj lub sijhawm zoo rau kev cuam tshuam nrog txhua lwm. Raws li qhov ci ntsa iab (Y / C) sib xyaw ua yees duab teeb meem ua kev muaj kev ua haujlwm tsis zoo, Cov kev yees duab AV video interface muaj kev txwv zoo.

YPbPr los yog Y'PbPr , kuj yog sau ua YPBPR, yog qhov chaw xim siv yees duab electronics, tshwj xeeb tshaj yog siv rau cov khoom video cables. YPbPr yog tus qauv analog version ntawm YCbCr xim qhov chaw; qhov ob yog sib npaug sib npaug tab sis YPbPr yog tsim los siv hauv analog systems whereas YCbCr yog npaj rau cov yees duab digital.

YPbPr yog feem ntau hu ua cov khoom video los ntawm tuam ntxhab, txawm nyob hauv qhov tseeb qhov no yog kev txiav txim siab: muaj ntau ntau hom kev tivthaiv video, feem ntau yog cov ntawv RGB. Ib co video card tuaj nrog video-hauv video-tawm (VIVO) cov chaw nres nkoj rau kev txuas rau cov khoom video.

Pib ntsais koj teeb uas siv YPbPr muaj kev sib cais txaus uas tsis muaj xim ntau ntau, yog li qhov zoo tshaj ntawm cov duab rho tawm yog ze li qhov qub rau qhov teeb meem ua ntej kev hais tawm. S-Video thiab yeeb yaj kiab yeeb yaj kiab cov cim teeb liab ua ke los ntawm kev siv hluav taws xob ntau; txawm li cas los xij, ntau zaus tshaj qhov teeb liab tsis muaj teeb meem ntawm qhov kawg ntawm qhov tso tawm raws li cov lus tsis muaj peev xwm cais cov teeb tseg kiag li. Nws yog qhov ua tau rau lawv cov neeg sib txuam sib luag kom sib cuam tshuam rau ib leeg (saib qhov chaw sib ntsib).

Cov neeg siv khoom analog interfaces, tsuas yog YPbPr thiab analog RGB tivthaiv video muaj peev xim nqa cov duab tsis-sib tshuam thiab kev cai tshaj 480i lossis 576i, mus txog HD npaj rau YPbPr.

RCA Interface yog hu ua Radio Corporation of American, vim hais tias RCA connector yog tsim los ntawm lub tuam txhab no. RCA hu ua Lotus taub hau, kuj hu ua AV terminal, los yog hu ua AV interface, muaj ob lub suab dawb interface thiab daj video interface, nws feem ntau yog siv RCA (feem ntau hu ua Lotus taub hau) mus txuas, siv tsuas yog siv tus qauv AV cable nrog ntau lub taub hau txuas nrog lub interface sib nug.

Li ntawd, nyob deb, RCA connectors yog hom ntau hom audio / video terminals. RCA suab terminals feem ntau cim nrog xim sib txawv nyob rau hauv khub: txoj cai channel nrog liab, sab laug channel nrog dub los yog dawb. Feem ntau, RCA lub suab tso suab yog sab laug thiab txoj kev raws ib pawg, txhua txoj kev pom zoo yog ib txoj kab. Lawv feem ntau yog cov suab paj nruag channel (xim liab), sab laug hauv dej (dawb) thiab video interfac e (daj).

Zaum video (Composite) feem ntau yog siv los ntawm daj RCA (Lotus socket) connector.

"Composite" txhais tau hais tias cov teeb liab analog xa cov luminance thiab chrominance teeb liab hauv tib lub channel, tab sis yog tias lub TV tsis muaj cuab kav cais cov teeb meem no ob qho zoo, nws yuav ua rau qhov muag plooj.