Ngophuhliso kunye nokusetyenziswa komboniso we-LED wangaphakathi, kunokubonwa ukuba umboniso we-LED usetyenziswa ngokubanzi kwiziko lomyalelo, iziko lokubeka iliso kunye nestudiyo.Nangona kunjalo, ukusuka ekusebenzeni ngokubanzi kwenkqubo yokubonisa i-LED, ngaba ezi ziboniso zingahlangabezana neemfuno zabasebenzisi?Ngaba imifanekiso eboniswe kwezi ziboniso ze-LED ziyahambelana nombono womntu?Ngaba ezi ziboniso ze-LED zinokumelana nee-engile ezahlukeneyo ze-shutter yekhamera?Le yimiba ekufuneka ithathelwe ingqalelo kwiziboniso ze-LED.Nangona kunjalo, isikali esingwevu sisitshixo sokuphucula ukuqaqamba okuphantsi kwesiphumo sokuboniswa kwe-LED.Okwangoku, abathengi baneemfuno eziphezulu kunye neziphezulu zomgangatho womfanekiso wesikrini sokubonisa, kwaye kubaluleke ngakumbi ukuba isikrini sokubonisa i-LED sifezekise umphumo "wokukhanya okuphantsi, i-gray ephezulu".Ngoko ndiya kwenza uhlalutyo oluthile kwimbono yezinga elimpunga elichaphazela umphumo wokubonisa i-LED.
- Yintoni isikali esingwevu?
- Yintoni impembelelo yegreyscale kwisikrini?
- Kukho iindlela ezimbini zokulawula umgangatho ongwevu womboniso okhokelwayo.
1.Yintoni isikali esingwevu?
Inqanaba elingwevu lomboniso we-LED linokuthiwa ngokuqaqamba kwe-LED.Inqanaba elingwevu lomboniso we-LED libhekiselele kumgangatho wokukhanya onokuthi ukwahlulwe ukusuka kowona mnyama ukuya kowona uqaqambileyo kwinqanaba lokukhanya okufanayo kwesiboniso se-LED.Enyanisweni, inqanaba elimpunga lingabizwa ngokuba yi-halftone, esetyenziselwa ukudlulisa idatha yesithombe kwikhadi lokulawula.Inqanaba lokuqala legrey lokubonisa i-LED linokuba yi-16, 32, 64. Ngenkqubela phambili yeteknoloji, i-256 ngoku isetyenziswa ngabavelisi abaqhelekileyo.Umgangatho ongwevu wesikrini sokubonisa i-LED sicutshungulwa kwi-16, 32, 64 kunye ne-256 yamanqanaba eepikseli zefayile ngokulungiswa kwe-matrix, ukwenzela ukuba umfanekiso ogqithisiweyo ucace.Nokuba yi-monochrome, isikrini esinemibala emibini okanye esinemibala egcweleyo, ukubonisa imifanekiso okanye oopopayi, kuyafuneka ukunyenyisa inqanaba elingwevu kwi-LED nganye eyenza iphikseli yomthombo wento.Ukulunga kohlengahlengiso yinto esiqhele ukuyibiza ngokuba yigrey level.
Nalu uluhlu lokukwenza ucace ngakumbi.Umzekelo, ukuba obomvu ococekileyo ngu-255 kwaye obomvu oqaqambileyo ngu-0, kukho imibala engama-256.Ukuba ufuna ukubonisa imifanekiso enezinto ezifanayo, ngaba kufuneka usebenzise iteknoloji yokuhambisa imibala engama-256.Ngokomzekelo, ukuba ixabiso lombala wesakhelo kwividiyo libomvu 69, kwaye isikrini sokubonisa i-LED sinamanqanaba angama-gray angama-64 kuphela, umbala kwividiyo yombala awukwazi ukuboniswa ngokuqhelekileyo.Isiphumo sokugqibela sinokucingelwa, kwaye kuyabonakala ukuba umfanekiso ucokisekile kwaye ulungile.
Ingcebiso: Okwangoku, inqanaba eliphezulu legreyi lesikrini sokubonisa i-LED yi-256, eyaziwa ngokuba yi-65536, engenakuthiwa iphosakele, kuba isibane ngasinye sombala ogcweleyo wesikrini se-LED siqulunqwe nge-RGB imibala emithathu, umbala omnye unama-256 grey. amanqanaba, kwaye inani lilonke yi-65536.2.
2.Yintoni impembelelo yegreyscale kwisikrini?
Inqanaba elingwevu lescreen esikhulu se-elektroniki se-LED libhekisa kutshintsho lwamanqanaba ombala ohlukeneyo phakathi kombala ophakamileyo obumnyama kunye nombala oqaqambileyo oqaqambileyo.Ngokubanzi, isikali esingwevu senkcazo ye-LED yesiko siphakathi kwe-14bit kunye ne-16bit, kunye namanqanaba ombala angaphezu kwe-16384, anokubonisa utshintsho oluthe kratya lwemibala yemifanekiso.Ukuba inqanaba elingwevu alanelanga, umgangatho wombala awuyi kukwanela okanye umgangatho wombala we-gradient awuyi kuba lula ngokwaneleyo, kwaye umbala womfanekiso odlalwayo awuyi kuboniswa ngokupheleleyo.Ubukhulu becala, isiphumo sokubonisa isikrini se-LED sincitshisiwe.Ukuba umfanekiso othathwe nge-1/500s ye-shutter ineebhloko ezicacileyo zemibala, ibonisa ukuba inqanaba elingwevu lesikrini liphantsi.Ukuba usebenzisa isantya esiphezulu se-shutter, esinje nge-1/1000s okanye i-1/2000s, uya kubona iipetshi zemibala ezicace ngakumbi, eziya kuchaphazela ngokunzulu i-aesthetics yomfanekiso uwonke.
3.Kukho iindlela ezimbini zokulawula umgangatho ongwevu womboniso okhokelwayo.
Enye kukutshintsha ukuqukuqela kwangoku, kwaye enye kukutshintsha kobubanzi be-pulse.
1. Guqula yangoku ehamba nge-LED.Ngokuqhelekileyo, iibhubhu ze-LED zivumela ukusebenza ngokuqhubekayo malunga ne-20 mA.Ngaphandle kokuzaliswa kwee-LED ezibomvu, umlinganiselo ongwevu wezinye ii-LED ngokusisiseko ulungelelwaniso lwangoku ohamba ngalo;
2. Enye indlela kukusebenzisa i-inertia ebonwayo yeliso lomntu ukuqonda ulawulo olungwevu ngokusebenzisa indlela yokumodareyitha kobubanzi be-pulse, oko kukuthi, ukutshintsha ngamaxesha athile ububanzi be-pulse light (okt duty cycle).Logama nje umjikelo wokukhanya okuphindaphindiweyo umfutshane ngokwaneleyo (okt izinga lohlaziyo liphezulu ngokwaneleyo), iliso lomntu alinakukuva iipixels ezikhupha ukukhanya zingcangcazela.Ngenxa yokuba i-PWM ifaneleka ngakumbi kulawulo lwedijithali, phantse zonke izikrini ze-LED zisebenzisa i-PWM ukulawula inqanaba legrey namhlanje xa ii-microcomputers zisetyenziswa ngokubanzi ukubonelela umxholo wokubonisa i-LED.Inkqubo yokulawula i-LED ngokuqhelekileyo iqulunqwe yibhokisi yokulawula eyintloko, ibhodi yokuskena kunye nokubonisa kunye nesixhobo sokulawula.
Ibhokisi yolawulo ephambili ifumana idatha yokuqaqamba yombala ngamnye wepikseli yesikrini ukusuka kwikhadi lokubonisa lekhompyuter, emva koko isasazeke kwakhona kwiibhodi ezininzi zokuskena.Ibhodi nganye yokuskena inoxanduva lokulawula imiqolo emininzi (iikholamu) kwisikrini sokubonisa i-LED, kunye nokubonisa kunye nokulawula iimpawu ze-LED kumqolo ngamnye (ikholomu) zihanjiswa ngendlela ye-serial.
Okwangoku, kukho iindlela ezimbini zokudluliselwa kweserial yeempawu zolawulo lokubonisa:
1. Enye kukulawula inqanaba elingwevu kwindawo nganye yepixel kwibhodi yokuskena.Ibhodi yokuskena ibolisa ixabiso lenqanaba elingwevu kumqolo ngamnye weepixels ukusuka kwibhokisi yokulawula (okt, ukumodareyitha kobubanzi bepulse), kwaye emva koko idlulisele isiginali yokuvula kumqolo ngamnye we-LED kwi-LED ehambelanayo ngendlela yepulse (1 ukuba ilungile). lit, 0 ukuba ayikhanyiswanga) kumgca wendlela yothotho ukulawula ukuba iyalayita na.Le ndlela isebenzisa izixhobo ezimbalwa, kodwa inani ledatha ethunyelwa ngokulandelelana likhulu.Kuba kumjikelo wokukhanya okuphindaphindiweyo, ipikseli nganye idinga i-16 pulses kumanqanaba ali-16 engwevu kunye nama-256 amanqanaba angama-256 engwevu.Ngenxa yokunciphisa ukusebenza kwesixhobo, izikrini ze-LED zinokufikelela kuphela kumanqanaba ali-16 engwevu.
2.Enye kukumodareyitha kobubanzi be-pulse.Umxholo wothumelo lwebhodi yokuskena ayilophawu lokutshintsha kwe-LED nganye, kodwa ixabiso le-8-bit binary grey.I-LED nganye inemodyuli yayo yobubanzi be-pulse ukulawula ixesha lokukhanyisa.Ngale ndlela, kumjikelo wokukhanya okuphindaphindiweyo, i-pixel nganye idinga kuphela i-4 pulses kumanqanaba angama-16 egrey kunye ne-8 pulses kumanqanaba angama-256 egrey, ukunciphisa kakhulu ukuhanjiswa kwe-serial frequency.Ngale ndlela yolawulo olunatyisiweyo lwe-LED engwevu, ulawulo lwe-grayscale lwenqanaba lama-256 lunokuphunyezwa ngokulula.
Kukho uchungechunge oluninzi lwezikrini kwigumbi le-MPLED elifikelele kwinqanaba le-grey ye-16bit, njenge-ST Pro, i-WS, i-WA, njl., ekwazi ukubonisa ngokugqibeleleyo umbala wokuqala wemifanekiso kunye namavidiyo.Kwimeko yokufota ngesantya esiphezulu, iibhloko zombala ezingentla azikwazi ukuvela.Izikrini zenziwe ngezinto eziphakamileyo eziphezulu, ezizimveliso eziphezulu kwishishini.Sibonelela ngeendlela ezahlukeneyo zobungakanani besithuba se-pixel, kunye neentlobo ngeentlobo zezisombululo zeprojekthi.Ukuba ufuna ukuthenga ibhetshi yezikrini ezincinci zepitch kutshanje, nceda uqhagamshelane nathi, inkokeli yenkonzo yokumisa enye.-MPLED.
Ixesha lokuposa: Nov-15-2022
