MIPI Camera vs USB Camera
Pazaka zingapo zapitazi, masomphenya ophatikizidwa asintha kuchokera ku buzzword kupita kuukadaulo wogwiritsiridwa ntchito m'mafakitale, azachipatala, ogulitsa, zosangalatsa, ndi zaulimi.Ndi gawo lililonse la chisinthiko chake, masomphenya ophatikizidwa atsimikizira kukula kwakukulu kwa kuchuluka kwa mawonekedwe a kamera omwe mungasankhe.Komabe, ngakhale kupita patsogolo kwaukadaulo, mawonekedwe a MIPI ndi USB akhalabe mitundu iwiri yodziwika bwino pamawonekedwe ambiri ophatikizidwa.
MIPI Interface
MIPI (Mobile Industry Processor Interface) ndi mulingo wotseguka komanso ndondomeko yokhazikitsidwa ndi MIPI Alliance ya ma processor a mafoni.MIPI kamera modulesNthawi zambiri amapezeka m'mafoni am'manja ndi mapiritsi, ndipo amathandizira kutanthauzira kwapamwamba kwa ma pixel opitilira 5 miliyoni.MIPI imagawidwa mu MIPI DSI ndi MIPI CSI, zomwe zimagwirizana ndi mawonedwe a kanema ndi mavidiyo omwe amalowetsamo, motsatira.Pakalipano, ma module a MIPI a kamera amagwiritsidwa ntchito kwambiri pazinthu zina zophatikizika, monga mafoni a m'manja, zojambulira zoyendetsa galimoto, makamera azamalamulo, makamera ang'onoang'ono odziwika bwino kwambiri, ndi makamera oyang'anira maukonde.
MIPI Display Serial Interface (MIPI DSI ®) imatanthawuza mawonekedwe a serial othamanga kwambiri pakati pa purosesa yolandira ndi gawo lowonetsera.Mawonekedwewa amathandizira opanga kuti aphatikizire zowonetsera kuti azigwira ntchito kwambiri, kugwiritsa ntchito mphamvu zochepa, komanso kusokoneza ma electromagnetic (EMI), pomwe amachepetsa kuchuluka kwa pini ndikusunga kuyanjana pakati pa ogulitsa osiyanasiyana.Opanga amatha kugwiritsa ntchito MIPI DSI kuti apereke mawonekedwe owoneka bwino azithunzi ndi makanema omwe amafunikira kwambiri komanso kuthandizira kufalitsa zinthu za stereoscopic.
MIPI ndiye mawonekedwe omwe amagwiritsidwa ntchito kwambiri pamsika wamasiku ano potumiza zithunzi ndi makanema pakati pa makamera ndi zida zolandirira.Itha kukhala chifukwa chosavuta kugwiritsa ntchito kwa MIPI komanso kuthekera kwake kuthandizira mitundu ingapo yamapulogalamu apamwamba kwambiri.Imabweranso ndi zida zamphamvu monga 1080p, 4K, 8K ndi kupitilira makanema komanso kujambula kokwezeka kwambiri.
Mawonekedwe a MIPI ndi chisankho chabwino pamapulogalamu monga zida zokwezedwa pamutu, kugwiritsa ntchito mwanzeru magalimoto pamsewu, makina ozindikira ndi manja, ma drones, kuzindikira nkhope, chitetezo, makina owunikira, ndi zina zambiri.
MIPI CSI-2 Interface
Muyezo wa MIPI CSI-2 (MIPI Camera Serial Interface 2nd Generation) ndiwowoneka bwino kwambiri, wotchipa, komanso wosavuta kugwiritsa ntchito.MIPI CSI-2 imapereka chiwongolero chachikulu cha 10 Gb/s chokhala ndi mayendedwe anayi azithunzi - njira iliyonse yomwe imatha kusamutsa deta mpaka 2.5 Gb/s.MIPI CSI-2 imathamanga kuposa USB 3.0 ndipo ili ndi ndondomeko yodalirika yogwiritsira ntchito kanema kuchokera ku 1080p mpaka 8K ndi kupitirira.Kuphatikiza apo, chifukwa chakuchepa kwake, MIPI CSI-2 ili ndi bandwidth yazithunzi zapamwamba.
Mawonekedwe a MIPI CSI-2 amagwiritsa ntchito zinthu zochepa kuchokera ku CPU - chifukwa cha mapurosesa ake ambiri.Ndilo mawonekedwe a kamera a Raspberry Pi ndi Jetson Nano.Raspberry Pi kamera ya V1 ndi V2 imakhazikitsidwanso.
Zochepa za MIPI CSI-2 Interface
Ngakhale ndi mawonekedwe amphamvu komanso otchuka, MIPI CSI imabwera ndi zoletsa zochepa.Mwachitsanzo, makamera a MIPI amadalira madalaivala owonjezera kuti agwire ntchito.Zikutanthauza kuti pali chithandizo chochepa cha masensa azithunzi osiyanasiyana pokhapokha opanga makina ophatikizidwa amakankhiradi!
Ubwino wa MIPI:
Mawonekedwe a MIPI ali ndi mizere yocheperako kuposa mawonekedwe a DVP.Chifukwa ndi chizindikiro chosiyana chamagetsi otsika, kusokoneza komwe kumapangidwa kumakhala kochepa, ndipo mphamvu yotsutsa kusokoneza imakhala yamphamvu.800W ndipo koposa zonse gwiritsani ntchito mawonekedwe a MIPI.Mawonekedwe a kamera ya smartphone amagwiritsa ntchito MIPI.
Zimagwira ntchito bwanji?
Nthawi zambiri, bolodi la ultra-compact board mu masomphenya limathandizira MIPI CSI-2 ndipo limagwira ntchito ndi mayankho anzeru anzeru.Kuphatikiza apo, imagwirizana ndi matabwa osiyanasiyana a CPU.
MIPI CSI-2 imathandizira MIPI D-PHY wosanjikiza wakuthupi kuti azitha kulumikizana ndi purosesa ya pulogalamu kapena System pa Chip (SoC).Itha kukhazikitsidwa pazigawo ziwiri zakuthupi: MIPI C-PHY℠ v2.0 kapena MIPI D-PHY℠ v2.5.Chifukwa chake, magwiridwe antchito ake ndi osavuta.
Mu kamera ya MIPI, sensa ya kamera imagwira ndikutumiza chithunzi kwa wolandila CSI-2.Chithunzicho chikaperekedwa, chimayikidwa muchikumbutso ngati mafelemu pawokha.Chimango chilichonse chimafalikira kudzera munjira zenizeni.Njira iliyonse imagawidwa kukhala mizere - imaperekedwa imodzi imodzi.Chifukwa chake, imalola kufalitsa zithunzi zonse kuchokera pa sensa ya chithunzi chomwecho - koma ndi mitsinje yambiri ya pixel.
MIPI CSI-2 imagwiritsa ntchito mapaketi olumikizirana omwe amaphatikiza mawonekedwe a data ndi khodi yokonza zolakwika (ECC).Phukusi limodzi limadutsa mu D-PHY wosanjikiza kenako ndikugawanika mu kuchuluka kwa mayendedwe ofunikira.D-PHY imagwira ntchito mothamanga kwambiri ndipo imatumiza paketi kwa wolandila kudzera panjira.
Kenako, wolandila CSI-2 amapatsidwa D-PHY wosanjikiza wakuthupi kuti atulutse ndikuyika paketiyo.Njirayi imabwerezedwa chimango ndi chimango kuchokera ku chipangizo cha CSI-2 kupita kwa wolandirayo kudzera pakukhazikitsa koyenera komanso kotsika mtengo.
Chiyankhulo cha USB
TheUSB mawonekedweimakonda kukhala ngati mphambano pakati pa machitidwe awiri - kamera ndi PC.Popeza imadziwika bwino chifukwa cha luso lake la pulagi-ndi-sewero, kusankha mawonekedwe a USB kumatanthauza kuti mutha kutsazikana ndi nthawi zodula, zokokedwa komanso zotsika mtengo zamawonekedwe anu ophatikizidwa.USB 2.0, mtundu wakale, uli ndi zofooka zazikulu zaukadaulo.Pamene teknoloji ikuyamba kuchepa, zigawo zake zingapo zimakhala zosagwirizana.USB 3.0 ndi mawonekedwe a USB 3.1 Gen 1 adakhazikitsidwa kuti athe kuthana ndi malire a USB 2.0 Interface.
Mawonekedwe a USB 3.0 (ndi USB 3.1 Gen 1) amaphatikiza zinthu zabwino zamakomedwe osiyanasiyana.Izi zikuphatikizanso kuyanjana kwa pulagi-ndi-sewero komanso kutsika kwa CPU.Mawonekedwe a mafakitale a USB 3.0 amawonjezeranso kudalirika kwa makamera apamwamba kwambiri komanso othamanga kwambiri.
Imafunikira zida zowonjezera zochepa ndipo imathandizira bandwidth yotsika - mpaka 40 megabytes pamphindikati.Ili ndi bandwidth yopitilira 480 megabytes pamphindikati.Izi ndizothamanga nthawi 10 kuposa USB 2.0 komanso nthawi zinayi kuposa GigE!Kuthekera kwake kwa pulagi-ndi-sewero kumatsimikizira kuti zida zowoneka bwino zitha kusinthidwa mosavuta - kupangitsa kuti ikhale yosavuta kusintha kamera yowonongeka.
Zochepa za USB 3.0 Interface
Choyipa chachikulu cha matendawaUSB 3.0mawonekedwe ndikuti simungathe kuyendetsa masensa apamwamba kwambiri pa liwiro lalikulu.Kugwetsa kwina ndikuti mutha kugwiritsa ntchito chingwe mpaka mtunda wa mita 5 kuchokera pa purosesa yolandila.Ngakhale zingwe zazitali zilipo, zonse zimakhala ndi "zowonjezera".Momwe zingwezi zimagwirira ntchito limodzi ndi makamera aku mafakitale ziyenera kuyang'aniridwa pa vuto lililonse.
Nthawi yotumiza: Mar-22-2023
