Chiwonetsero chamagetsi cha LED chili ndi ma pixel abwino, mosasamala kanthu za usana kapena usiku, masiku adzuwa kapena mvula, mawonetsedwe a LED amatha kulola omvera kuti awone zomwe zili, kuti akwaniritse zofuna za anthu za dongosolo lowonetsera.
Tekinoloje yopezera zithunzi
Mfundo yayikulu yowonetsera zamagetsi za LED ndikutembenuza ma siginecha a digito kukhala ma siginecha azithunzi ndikuwawonetsa kudzera munjira yowala.Njira yachikhalidwe ndikugwiritsa ntchito khadi yojambula kanema yophatikizidwa ndi khadi ya VGA kuti mukwaniritse ntchito yowonetsera.Ntchito yayikulu ya kirediti kadi yopezera mavidiyo ndikujambula zithunzi zamakanema, ndikupeza maadiresi amtundu wa pafupipafupi, ma frequency akumunda ndi ma pixel ndi VGA, ndikupeza ma sign a digito makamaka potengera tebulo loyang'ana mitundu.Nthawi zambiri, mapulogalamu amatha kugwiritsidwa ntchito kubwereza nthawi yeniyeni kapena kuba kwa hardware, poyerekeza ndi kuba kwa hardware ndikothandiza kwambiri.Komabe, njira yachikhalidwe imakhala ndi vuto logwirizana ndi VGA, zomwe zimapangitsa kuti m'mphepete mwawonekedwe, khalidwe losaoneka bwino ndi zina zotero, ndipo potsirizira pake zimawononga khalidwe lachiwonetsero chamagetsi.
Kutengera izi, akatswiri makampani kupanga odzipereka kanema khadi JMC-LED, mfundo ya khadi zachokera PCI basi ntchito 64-bit zithunzi accelerator kulimbikitsa VGA ndi mavidiyo ntchito mu umodzi, ndi kukwaniritsa deta kanema ndi VGA deta kuti. kupanga zotsatira za superposition, mavuto am'mbuyomu ogwirizana adathetsedwa bwino.Kachiwiri, kupeza chigamulo kumatengera mawonekedwe azithunzi zonse kuti zitsimikizire kukhathamiritsa kwapang'onopang'ono kwa chithunzi cha kanema, gawo la m'mphepete silikhalanso losavuta, ndipo chithunzicho chimatha kusinthidwa mosasamala ndikusunthidwa kuti chikwaniritse zofunikira zosewerera.Pomaliza, mitundu itatu yofiira, yobiriwira ndi yabuluu imatha kulekanitsidwa bwino kuti ikwaniritse zofunikira zamtundu weniweni wowonetsera pakompyuta.
2. Kubala kwenikweni kwa mtundu wa fano
Mfundo yowonetsera mawonekedwe amtundu wa LED ndi yofanana ndi ya kanema wawayilesi potengera magwiridwe antchito.Kupyolera mu kuphatikiza kogwira mtima kwa mitundu yofiira, yobiriwira ndi ya buluu, mitundu yosiyanasiyana ya fano ikhoza kubwezeretsedwa ndi kupangidwanso.Kuyera kwa mitundu itatu yofiira, yobiriwira ndi yabuluu idzakhudza mwachindunji kubereka kwa mtundu wa chithunzicho.Tiyenera kuzindikira kuti kubereka kwa chithunzicho sikungophatikizana mwachisawawa mitundu yofiira, yobiriwira ndi ya buluu, koma maziko ena amafunikira.
Choyamba, chiŵerengero cha kuwala kofiira, kobiriwira ndi buluu chiyenera kukhala pafupi ndi 3: 6: 1;Kachiwiri, poyerekeza ndi mitundu ina iwiri, anthu ali ndi chidwi chofiira m'masomphenya, kotero ndikofunikira kugawa zofiira mofananamo mu malo owonetsera.Chachitatu, chifukwa masomphenya a anthu akuyankhira kumayendedwe osagwirizana ndi kuwala kofiira, kobiriwira ndi buluu, ndikofunikira kukonza kuwala komwe kumachokera mkati mwa TV ndi kuwala koyera ndi kuwala kosiyana.Chachinayi, anthu osiyanasiyana ali ndi kuthekera kosiyanasiyana kosiyanasiyana pamikhalidwe yosiyanasiyana, chifukwa chake ndikofunikira kudziwa zomwe zikuwonetsa kutulutsa mitundu, zomwe nthawi zambiri zimakhala motere:
(1) Mafunde ofiira, obiriwira ndi abuluu anali 660nm, 525nm ndi 470nm;
(2) Kugwiritsa ntchito machubu 4 okhala ndi kuwala koyera ndibwino (machubu opitilira 4 amathanso, makamaka zimadalira mphamvu ya kuwala);
(3) Mulingo wotuwa wamitundu itatu yayikulu ndi 256;
(4) Kuwongolera kopanda mzere kuyenera kutengedwa kuti pakhale ma pixel a LED.
Dongosolo lowongolera kuwala kofiira, kobiriwira ndi kobiriwira kumatha kuzindikirika ndi makina a Hardware kapena pulogalamu yofananira yosewera.
3. wapadera chowonadi pagalimoto dera
Pali njira zingapo zogawira chubu cha pixel chomwe chilipo: (1) jambulani dalaivala;(2) DC kuyendetsa;(3) nthawi zonse gwero galimoto.Malinga ndi zofunikira zosiyanasiyana pazenera, njira yojambulira ndiyosiyana.Pazenera lamkati la lattice block, mawonekedwe ojambulira amagwiritsidwa ntchito makamaka.Pazenera lakunja la pixel chubu, kuti zitsimikizire kukhazikika ndi kumveka bwino kwa chithunzi chake, mawonekedwe oyendetsa a DC akuyenera kutengedwa kuti awonjezerepo nthawi zonse pachida chojambulira.
LED oyambirira makamaka ntchito otsika-voteji chizindikiro mndandanda ndi mode kutembenuka, mode izi ali olowa ambiri solder, mtengo kupanga mkulu, osakwanira kudalirika ndi zofooka zina, zofooka izi kuchepetsa chitukuko cha LED anasonyeza pakompyuta mu nthawi inayake.Pofuna kuthana ndi zofooka zomwe zili pamwambapa za chiwonetsero chamagetsi cha LED, kampani ina ku United States idapanga mawonekedwe ophatikizika ogwiritsira ntchito, kapena ASIC, omwe amatha kuzindikira kutembenuka kofanana ndi kuyendetsa komweko kukhala imodzi, gawo lophatikizika lili ndi izi. : kufanana linanena bungwe mphamvu galimoto, kuyendetsa kalasi panopa mpaka 200MA, LED pa maziko akhoza lotengeka yomweyo;Large panopa ndi voteji kulolerana, osiyanasiyana, zambiri akhoza kukhala pakati 5-15V kusankha kusintha;Kutulutsa kwa serial-parallel pakali pano ndikokulirapo, kulowa ndi kutulutsa komweku kuli kwakukulu kuposa 4MA;Kuthamanga kwachangu kwa data, koyenera ntchito yaposachedwa yamitundu yambiri ya imvi ya LED.
4. kuwala kulamulira D/T kutembenuka luso
Chiwonetsero chamagetsi cha LED chimapangidwa ndi ma pixel ambiri odziyimira pawokha mwadongosolo komanso kuphatikiza.Kutengera gawo la kulekanitsa ma pixel wina ndi mzake, chiwonetsero chamagetsi cha LED chimangokulitsa mawonekedwe ake owongolera owongolera kudzera pazizindikiro za digito.Pixel ikawunikiridwa, kuwala kwake kumayendetsedwa makamaka ndi wowongolera, ndipo imayendetsedwa paokha.Kanemayo akafunika kuwonetseredwa mumtundu, zikutanthauza kuti kuwala ndi mtundu wa pixel iliyonse ziyenera kuyendetsedwa bwino, ndipo ntchito yojambulira imayenera kumalizidwa mogwirizana mkati mwa nthawi yodziwika.
Zina zazikulu zamagetsi zamagetsi za LED zimapangidwa ndi ma pixel masauzande ambiri, zomwe zimawonjezera zovuta pakuwongolera mitundu, kotero kuti zofunikira zapamwamba zimayikidwa patsogolo pakufalitsa deta.Sizowona kuyika D/A pa pixel iliyonse mumayendedwe enieni owongolera, chifukwa chake ndikofunikira kupeza chiwembu chomwe chingathe kuwongolera bwino ma pixel ovuta.
Popenda mfundo ya masomphenya, zimapezeka kuti kuwala kwapakati pa pixel makamaka kumadalira chiŵerengero cha kuwala kwake.Ngati chiŵerengero chowala chisinthidwa bwino pa mfundoyi, kuwongolera koyenera kwa kuwala kungathe kupezedwa.Kugwiritsa ntchito mfundoyi pa zowonetsera zamagetsi za LED kumatanthauza kusintha ma siginecha a digito kukhala ma siginecha a nthawi, ndiko kuti, kutembenuka pakati pa D/A.
5. Ukadaulo wokonzanso ndi kusunga deta
Pakalipano, pali njira ziwiri zazikulu zokonzekera magulu a kukumbukira.Imodzi ndi njira ya pixel yophatikizira, ndiko kuti, ma pixel onse pachithunzichi amasungidwa m'thupi limodzi lokumbukira;ina ndi njira yapang'ono, ndiye kuti, ma pixel onse pachithunzichi amasungidwa m'matupi osiyanasiyana okumbukira.Zotsatira zachindunji zogwiritsa ntchito kangapo posungira ndikuzindikira kuwerengeka kwamitundu yosiyanasiyana ya pixel panthawi imodzi.Mwazigawo ziwiri zomwe zili pamwambapa, njira ya ndege yaying'ono ili ndi zabwino zambiri, zomwe zimakhala bwino pakuwongolera mawonekedwe a skrini ya LED.Kupyolera mu dera lomanganso deta kuti mukwaniritse kutembenuka kwa deta ya RGB, kulemera komweko ndi ma pixel osiyanasiyana kumaphatikizidwa ndi kuikidwa m'malo osungiramo pafupi.
6. Ukadaulo wa ISP mu kapangidwe ka logic circuit
Dongosolo lachikhalidwe chowongolera zamagetsi la LED limapangidwa makamaka ndi dijiti wamba, yomwe nthawi zambiri imayendetsedwa ndi kuphatikiza kwa digito.Muukadaulo wachikhalidwe, gawo lakapangidwe kadera likamalizidwa, bolodi loyang'anira dera limapangidwa koyamba, ndipo zigawo zofunikira zimayikidwa ndipo zotsatira zake zimasinthidwa.Pamene ntchito ya board board logic siyingakwaniritse zofunikira zenizeni, imayenera kukonzedwanso mpaka itakwaniritsa ntchitoyo.Zitha kuwoneka kuti njira yopangira chikhalidwe sikuti imakhala ndi zochitika zinazake zokha, komanso imakhala ndi mapangidwe aatali, omwe amakhudza chitukuko chabwino cha njira zosiyanasiyana.Zigawo zikalephera, kukonza kumakhala kovuta ndipo mtengo wake ndi wokwera.
Pazifukwa izi, dongosolo programmable luso (ISP) anaonekera, owerenga akhoza kukhala ndi ntchito mobwerezabwereza kusintha zolinga zawo kamangidwe ndi dongosolo kapena dera bolodi ndi zigawo zina, pozindikira ndondomeko okonza hardware pulogalamu pulogalamu mapulogalamu, dongosolo digito pa maziko a dongosolo programmable luso kutenga mawonekedwe atsopano.Ndi kukhazikitsidwa kwa ukadaulo wokonzekera dongosolo, sikuti mawonekedwe apangidwe amafupikitsidwa, komanso kugwiritsidwa ntchito kwa zigawo kumakulitsidwa kwambiri, kukonza minda ndi ntchito za zida zomwe chandamale zimasinthidwa.Chofunikira paukadaulo wokhazikika wadongosolo ndikuti sichiyenera kuganizira ngati chida chosankhidwa chili ndi mphamvu iliyonse mukamagwiritsa ntchito pulogalamu yamakina kuti mulowetse malingaliro.Pakulowetsa, zigawo zitha kusankhidwa mwakufuna, ndipo ngakhale zida zenizeni zitha kusankhidwa.Mukamaliza kulowetsa, kusintha kumatha kuchitika.
Nthawi yotumiza: Dec-21-2022
