Makamera ambiri pamsika amakhala ndi makamera apamwamba, makamera otanthauzira,kuti wchipewa ndi kusiyana pakati pa SD ndi HD makamera? Kupyolera mu kanema woyima ndi kusiyanitsa kwa pixel, pali kusiyana kwa pixel, ndipo ndi kamera yotanthauzira kwambiri pa 96W ndi pamwamba.
Tanthauzo
Kodi HD Streaming ndi chiyani?
Mawu akuti HD akuyimira High Definition, ndipo HD Streaming amatanthauza kusinthidwa kwamavidiyo amtundu wa HD omwe amaseweredwa pa intaneti kuti asewedwe. Itha kuchitika pogwiritsa ntchito mitundu ingapo yamakanema, kuphatikiza MPEG kapena kukhamukira kwamavidiyo osalala.
Makanema akukhamukira a HD akukupatsirani kumveka bwino komanso tsatanetsatane kuposa mavidiyo a SD, omwe nthawi zambiri amawonedwa pa YouTube ndi masamba ena. Mudzawona pixelation yocheperako pamakanema otanthauzira kwambiri chifukwa imakhala ndi ma pixel owirikiza kawiri pa chimango (1920 × 1080) kuposa chithunzi chodziwika bwino cha 1280 × 720. Zithunzi zapamwambazi zilinso ndi kutulutsa kwamitundu kwabwinoko komanso kuyenda kosavuta chifukwa cha liwiro lawo la chimango.
Kanema ofukula kusintha
1.SD ndi mtundu wa kanema wokhala ndi mawonekedwe ochepera 720p (1280*720). 720p ikutanthauza kuti kuwongolera koyima kwa kanema ndi mizere 720 yosanthula pang'onopang'ono. Makamaka, amatanthauza "tanthauzo lokhazikika" mavidiyo monga VCD, DVD, ndi mapulogalamu a pa TV okhala ndi mizere pafupifupi 400, ndiko kuti, tanthauzo lokhazikika.
2.Kusintha kwa thupi kukafika ku 720p kapena kupitilira apo, kumatchedwa kutanthauzira kwachingerezi (Chingerezi High Definition) komwe kumatchedwa HD. Ponena za kutanthauzira kwapamwamba, pali awiri odziwika padziko lonse lapansi: vidiyo yowoneka bwino imaposa 720p kapena 1080p; mawonekedwe a kanema ndi 16: 9.
Kanema wa High Definition (HD) sichachilendo padziko lapansi lamagetsi ogula pomwe pakhala kusintha kwakukulu kuchokera ku Standard Definition (SD) kupita ku zowoneka bwino kwambiri HD.
Pankhani yowunikira mafakitale, kusinthako kwakhala kocheperako koma sikungapeweke. Ngakhale makina ambiri owunikira ndi makamera omwe akupezeka pamsika akadali Standard Definition, akatswiri amalosera kuti HD idzakhala ukadaulo wapamwamba pofika 2020.
Zithunzi zamitundu zimakhala ndi timadontho ting'onoting'ono totchedwa ma pixel, ndipo kusamvana kumatanthawuza kuchuluka kwa ma pixel mu kanema kapena chithunzi. Tanthauzo la kanema wa SD limayamba pa 240p ndikutha pa 480p, pomwe 1080p kusamvana ndi mphamvu zonse HD (ndi chilichonse chomwe chili pamwamba apa chimawonedwa ngati Ultra-HD).
Zambiri:
Momwe kamera imagwirira ntchito:
1. Kamera imapangidwa ndi lens, lens holder, capacitor, resistor, fyuluta ya infrared (IP Filter), sensa (Sensor), bolodi la dera, chip processing chip DSP ndi board reinforcement ndi zigawo zina.
2. Pali mitundu iwiri ya masensa, imodzi ndi sensor-coupled sensor (CCD) ndipo ina ndi metal oxide conductor sensor (CMOS); ma circuit board nthawi zambiri amasindikizidwa ma circuit board (PCB) kapena flexible circuit board (FPC).
3. Kuwala kowonekera kumalowa mu kamera kudzera mu lens, ndiyeno kusefa kuwala kwa infrared mu kuwala komwe kumalowa mu lens kudzera mu fyuluta ya IR, ndiyeno kumafika ku sensa (sensor), yomwe imatembenuza chizindikiro cha kuwala kukhala chizindikiro chamagetsi.
4. Kupyolera mu chosinthira chamkati cha analog / digito (ADC), chizindikiro cha magetsi chimasinthidwa kukhala chizindikiro cha digito, kenako chimatumizidwa ku chip processing chip DSP chokonzekera, ndikusinthidwa kukhala RGB, YUV ndi maonekedwe ena kuti atuluke.
Nthawi yotumiza: Mar-03-2023
