Ndeupi musiyano uripo pakati pekupindirana uye kufambira mberi scan yemakhamera emusangano wevhidhiyo

Interlaced uye Progressive inzira dzese dzekutaridza mifananidzo inofamba pamudziyo wekuratidzira.Theinterlacednzira ndeyokuti furemu imwe neimwe yakakamurwa kuita minda miviri uye inoratidzwa neimwe nzira.Nzira inofambira mberi ndeyekuratidza mifananidzo yose mune imwe neimwe furemu.Kuratidzwa panguva imwe chete.Iyo yakajairika yekuvheneka nzira yeLCD TV kuratidza kubva kuruboshwe kuenda kurudyi uye kumusoro kusvika pasi, kutarisisa nhamba yakatarwa yemafuremu pasekondi.

图片1

Interlaced scanning zvinoreva kuti furemu yega yega yakakamurwa kuita minda miviri.Munda wega wega une ese asinganzwisisike kana kunyange scanner mitsara mufuremu.Kazhinji, mitsetse isinganzwisisike inotariswa kutanga kuti iwane yekutanga ndima, uyezve mitsetse inotariswa kuti iwane chikamu chechipiri.Nekuda kwekushingirira kwekuita kwekuona, ziso remunhu rinoona kufamba kwakatsetseka pachinzvimbo chekupenya kwehafu-frame mifananidzo.Asi panguva ino, pachava nekufinyamisa zvisingaonekwe, izvo zvinoita kuti maziso anete.Kana zviri mukati mechidzitiro zvakachinjika mitsetse, kupenya uku kuri nyore kuona.
Progressive scan inoratidza yese scan frame nguva dzese.Kana furemu chiyero chekufambira mberi chekuongorora chakafanana nechiyero chemunda weinterlacedscan, ziso remunhu rinoona mufananidzo wakapfava pane wakabatanidzwa scanner, uye flicker idiki pane interlaced scan.Iyo inofambira mberi yekuongorora nzira inoita kuti frequency spectrum yechiratidzo uye chiteshi bandwidth yekufambisa chiratidzo isvike zvakanyanya zvinodiwa.Iyo yekushandisa musimboti ndeyekupatsanura mufananidzo we625-mutsara kuita minda miviri yekuongorora.Munda wekutanga unonzi odd field, uye chete mitsetse isinganzwisisike ye625 mitsetse ndiyo inoongororwa (scanning 1, 3, 5, ... mitsetse ichichinjana), uye yechipiri ndima ( even field ) Chete tarisa mitsetse ine manhamba ye625 chete. mitsetse (scanning 2, 4, 6, ... mitsetse munhevedzano), uye zadzisa nhamba yemitsara yakaongororwa nechimiro chepakutanga chemufananidzo kuburikidza ne-two-field scanning, iyo iri interlaced scanning.Kune iyo interlaced scanning ine 625 mitsara pafuremu, furemu yega yega inotariswa mundima mbiri, munda wega wega unongotarisa mitsara 312.5, uye maframendi makumi maviri neshanu emifananidzo pasekondi anoongororwa, saka minda makumi mashanu pasekondi inoongororwa ( The odd field. uye iyo yakaenzana ndima imwe neimwe ine 25 minda), kureva kuti, iyo furemu frequency ndeye 25 Hz uye frequency yemunda ndeye 50 Hz panguva ye interlaced scanning.


Nguva yekutumira: Oct-12-2020