Progressive Scan - Nheyo yevhidhiyo yekugadzira
Nehurukuro yaro pakati pemakore ekuma1990, DVD yakava nheyo yeimba yemitambo yekuchinja. Nehuwandu hwehuwandu hwemifananidzo yakanakisisa pamusoro peVHS neAnalogog TV, DVD yakaratidza kufambira mberi kukuru mukuvaraidza kwemusha. Chimwe chezvipo zvakakosha zveDVD raiva basa rekufambira mberi kwemaitiro ekutsvaga kuti uwedzere kutarisa TV kuona.
Interlaced Scan - Nheyo yeChechi yeVhidhiyo
Tisati tapinda mune chimwe chinhu chinowedzera kupenya uye kukosha kwayo mukuvandudza ruzivo rwekuona TV, zvakakosha kunzwisisa nzira iyo mifananidzo yeanalogo yemifananidzo yakaratidzwa paTV. Mifananidzo yeAnalog TV , yakadai sedaya inzvimbo yakasimwa, kambani yekambani, kana VCR yakaratidzwa patafura yeTV vachishandisa teknolojia inonzi Interlaced Scan. Pakanga pane maitiro maviri ekudzivirira-shandiswa mukati mekushandiswa muNTSC nePAL .
- NTSC yakabva kune imwe nzira ye 525-mitsara, 60 minda / 30 mafaira-per-yechipiri pa 60 Hz yekutsvaga uye kuratidzwa kwezvifananidzo zvevhidhiyo. Iyi ndiyo nzira inopindira iyo iyo firimu imwe inotaridzirwa mumatanho maviri emirara 262, iyo zvino inosanganiswa kuratidzira fomu yevhidhiyo ne 525 scan lines. Nyika dzine NTSC nheyo ndiyo US, Canada, Mexico, dzimwe nzvimbo dzeCentral uye South America, Japan, Taiwan, uye Korea.
- PAL yakavakirwa pamutsara we625, 50 munda / 25 mafaira wechipiri, 50HZ system. Chiratidzo chacho chinopindirana, seNTSC, muminda miviri, ine mitsetse 312 imwe neimwe. Mukuwedzera, PAL ine purogiramu yepamusoro pedyo neyo yefirimu. PAL ine purogiramu yemafaira makumi maviri nemashanu nechipiri, apo zvinyorwa zvepafirimu zvinovakirwa purogiramu yemafaira makumi maviri nemasere. Nyika dzine PAL system nheyo dzinosanganisira UK, Germany, Spain, Portugal, Italy, China, India, vazhinji veAfrica, uye Middle East.
Chii Chinyorwa Chekufambira Mberi
Nekuuya kwemakombiyuta epaimba uye ehofisi, zvakaonekwa kuti kushandisa TV yepamutemo yekuratidzwa kwemifananidzo yekombiyuta haina kubereka migumisiro yakanaka, kunyanya nemashoko. Izvi zvaive zvichikonzerwa nemigumisiro yekombiyuta yekutsvaga yakashandurwa. Kuti uwane nzira inofadza uye yakarurama yekuratidzira mifananidzo pamakombiyuta, teknolojia yekufambira mberi yakagadzirwa yakagadzirwa.
Progressive scan inopesana neyatsvaga mukati mokuti mufananidzo unoratidzwa pachikanda nekunyora mutsara wega wega (kana mutsara wepikseli) muchirongwa chekuenzanisa pane imwe nzira, sezvinoitwa ne interlaced scan. Mune mamwe mazwi, pakufambira mberi, mitsara yemifananidzo (kana pixel rows) inotorwa muhurongwa hwekuverenga (1,2,3) pasi pasi pehwindo kubva kumusoro kusvika pasi, pane pane imwe nzira (mitsara kana mitsetse 1,3, 5, etc ... inotevera mitsara kana mitsetse 2,4,6).
Nokunyatsotarisa mufananidzo wacho pahwindo pane rimwe rinopisa pane kuvaka chifananidzo nekubatanidza zvikamu zviviri, mufananidzo wakajeka, wakajeka unogona kuratidzirwa unofanirwa zvakakodzera pakuona mashoko akanaka, zvakadai sekunyora uye kuenderera kunewo zvishoma zvisingakwanisi kushandura flicker.
Kuona teknolojia iyi senzira yekuvandudza mararamiro atinoona mifananidzo pachirongwa chevhidhiyo, teknolojia yekuvandudza scan yakashandiswa zvakare kuDVD.
Mutsara Unokakavara
Nekuuya kwehombe huru yekodzero yepamusoro Plasma , LCD TV, uye mavhidhiyo emagetsi , sarudzo yakagadzirwa necheterevhizheni TV, VCR, uye maDVD zvisizvo hazvina kunyorwa zvakanaka nenzira yakatsvaga yekutsvaga.
Kubhadhara, kuwedzera pakuenderera mberi kwekutsvaga, vaiti veTV vakaisawo pfungwa yeChina Doubling.
Kunyange zvazvo kune nzira dzakawanda izvi zvingashandiswa, pamusana wayo, terevhizheni ine mitsetse inokwirirana inokonzera "mitsetse pakati pemiganhu", iyo inosanganisira maitiro emutsara wepamusoro nemutsara uri pasi apa kuitira kupa mamiriro emufananidzo wepamusoro. Iyi mitsetse mitsva inowedzerwa kune yakagadzirwa mutsara wekutanga uye mitsetse yese inobva ichitaridzirwa zvishoma nezvishoma kuterevhizheni.
Zvisinei, kukanganisa nekwakapetwa kwekwereti ndechokuti kufamba kwezvinhu zvinogona kuguma, sezvo mitsara ichangobva kusikwa inofanirwa kutama nechiito chiri mumufananidzo. Kuti ubudise mifananidzo, mamwe mavhidhiyo ekugadzirisa anowanzodiwa.
3: 2 Pulldown - Kuendesa Mafirimu kuVhidhiyo
Kunyange zvazvo kuenderera mberi kwekutsvaga uye kuedza kwepachipiri kwepamusoro kukwanisa kutarisa zvikanganiso zvezviratidziro zvemufananidzo wevhidhiyo, pane chimwe chinetso chinodzivirira kuratidzwa kwakarurama kwemafirimu pakutanga kupfurwa pafirimu kuti ionekwe zvakanaka paTV. Pamusoro pePAL-based source mafaira uye maTV, iyi haisi nyaya huru sezvo PAL frame rate uye firimu yemafirimu yepamusoro yakaswedera pedyo, saka zvishoma kururamisa zvinodiwa pakuratidza firimu zvakarurama pamusoro pePAL TV screen. Zvisinei, izvo hazvisizvo neNTSC.
Dambudziko reNTSC nderekuti mafirimu anowanzopfurwa mumafaira makumi maviri nemasere nechipiri uye NTSC vhidhiyo inobudiswa uye inoratidzwa pamapuranga makumi matatu nemasere.
Izvi zvinoreva kuti kana firimu inotumirwa kuDVD (kana kuti videotape) mune imwe NTSC-based system, zvakasiyana-siyana mafirimu nemavhidhiyo zvinofanira kutaridzwa. Kana iwe wakamboedza kuendesa mafirimu emapurisa emapfumbamwe kana 16mm nemavhidhiyo mapafirimu firimu sezvo firimu ichiratidzwa, iwe unonzwisisa nyaya iyi. Sezvo mafirimu emafuta ari kufungidzirwa pamapfumi makumi maviri nemasere kwechipiri, uye camcorder iri kutora mapurisa makumi matatu nemasere, zvifananidzo zvemafirimu zvicharatidzira zvakanyanya kupisa kana iwe uchitamba vhadhiyo yako zvakare. Chikonzero cheizvi ndechokuti mapuranga ari pachiyero ari kufamba zvishoma nezvishoma kupfuura mafaira evhidhiyo mukamera, uye sezvo kufamba kwemafambi hakuwirirani, izvi zvinounza kupisa kwakasimba kana firimu ichiendeswa kuvhidhiyo pasina kuchinja.
Kuti uratidze kubvisa, kana firimu inotumirwa zvakanaka kune vhidhiyo (ingava DVD, VHS, kana imwe fomu), firimu yefaira yefirimu "yakatambanudzwa" nemurairo unonyanya kufanana nehumuro hwemafirimu yemavhidhiyo kusvika muvhidhiyo yehuwandu hwehuwandu.
Zvisinei, mubvunzo unoramba uri wekuti ungaratidza sei izvi zvakarurama paTV.
Progressive Scan uye 3: 2 Pulldown
Kuti uone firimu mune zvayo yakanyatsonaka, inofanira kuratidzwa pamapuranga makumi maviri nemasere pamasere pane zvimwe zvinoratidzirwa kana terevhizheni.
Kuti uite izvi nenzira yakarurama sezvinobvira muNTSC-based system, chinyorwa, chakadai seDVD player chinofanira kuva ne3: 2 kugadziriswa kwekudzivirira, kushandura mitambo ye3: 2 iyo yakashandiswa kuisa vhidhiyo muDVD, uye inobudiswa mumapuranga ayo epakutanga makumi maviri namasere pamusana wechipiri, ichiri kushandiswa nemapuranga makumi matatu nemasere purogiramu yevhidhiyo.
Izvi zvinoitwa neDVD player iyo yakagadzirwa nemhando yakasiyana yeMECEG decoder, yakabatanidzwa nezvinozivikanwa se deinterlacer iyo inotarisa 3: 2 inonzi video inoparadzanisa majekiti kubva kuDVD uye inotora mafirimu akafanirwa mafirimu kubva kumafaira evhidhiyo , zvishoma nezvishoma inotsvaga mapuranga iwayo, inogadzira zvigadzirisiti zvekugadzirisa, uye inoshandura iyi nhamba yevhidhiyo kuburikidza neiyo inoenderera mberi yakagadzirwa-enabled video video (Y, Pb, Pr) kana HDMI connection .
Kana DVD yako player iri kuramba ichitarisa pasina 3: 2 kuvharwa kwepulldown, icharamba ichibudisa mufananidzo wakajeka kupfuura vhidhiyo yakabatana, sezvo shanduro yeDVD player inofambira mberi ichaverenga mufananidzo wechinyorwa cheDVD uye inoshandisa chimiro chinopfuurira chechiratidzo uye kupfuura kuti paTV kana pane video projector.
Zvisinei, kana DVD player ine kuwedzerwa kwe3: 2 kuvharwa kwemhepo, hazvisi chete kuti vhidhiyo yako inoratidzira mufananidzo wakajeka, asi iwe uchaona firimu reDVD mune sangano repedyo sezvinobvira kune zvaunenge uchiona zvichibva kune chaiyo mafirimu epurogiramu, kunze kwekuti ichiri muchivako chevhidhiyo.
Progressive Scan uye HDTV
Pamusoro peDVD, kufambira mberi kunoshandiswa kune DTV, HDTV , Blu-ray Disc, uye kuparadzirwa kweTV.
Semuenzaniso, tsanangudzo yakazara DTV inoparidzirwa muna 480p (iyo inofanirwa sekuenderera mberi DVD scan - mitsara 480 kana mapikisi emupikisi zvishoma nezvishoma kuverengwa) uye HDTV inoparidzirwa pane 720p (mitsara 720p kana misikiti inowanikwa zvishoma nezvishoma) kana 1080i (1,080 mitsara kana pixel mitsetse iyo inowanikwa kune dzimwe nyika yakaumbwa nemiti 540 imwe neimwe) . Kuti ugamuchire zviratidzo izvi, unoda HDTV pamwe ne-built-in HDTV tuner kana kunze HD tuner, HD Cable, kana Satellite box.
Zvaunoda Kuti Uwane Ikufambira Mberi Scan
Kuti urambe uchifambira mberi, kuverenga DVD, HD cable, kana satellite box, neTV, mavhidhiyo kuratidza, kana vhidhiyo projector inofanirwa kuve inofambira mberi inokwanisa (iyo yose inotengwa 2009 kana kuti gare gare ), uye chitubu chinonzi (DVD / Blu-ray Disc player, Cable / Satellite Box), inoda kuva neipi inowedzera-yakabvumirana nevhidhiyo yevhidhiyo, kana DVI (Digital Video Interface) kana HDMI (High Definition Multi-media Interface) ) huwandu hunobvumira kutumirwa kwemazinga uye e-definition-mberi kufananidzira scan kune imwe terevhizheni yakagadzirirwa.
Zvakakosha kuratidza kuti chimiro chakasanganiswa uye S-Vhidhiyo inobatanidza haisi kutenderera mberi nekuona scan video mifananidzo. Uyezve, Kana iwe ukanyatsogadzirisa kuenderera mberi kwekutsvaga purogiramu kune imwe isina kufambira mberi kuisa muTV, iwe haugoni kuwana mufananidzo (izvi zvinonyanya kushanda kune dzakawanda CRT TVs - yose LCD, Plasma, uye OLED TV zvinofambira mberi zvinoshandiswa zvinoenderana).
Kuti uone kuenderera mberi kupenya nechekudzokera shure kwe3: 2, iyo DVD player kana TV inoda kuva ne3: 2 kuvharwa kwepulldown (kwete dambudziko chero chinhu chakatengwa 2009 kana kuti gare gare). Izvo zvaidiwa zvingave zveDVD player ine 3: 2 kugadziriswa kwekudzivirira uye chaizvoizvo inoita kushandiswa kwekutsvaira kwebasa, nechekufambira mberi inoona terevhizheni inobudirira ichiratidza chifananidzo ichi sechibva kuDVD player. Pane zvinhu zvingasarudzwa mune zvose zviri zviviri kuenderera mberi DVD player uye inofambira mberi inoona (HDTV) terevhizheni iyo ichakubatsira iwe kugadzirisa kupfuurira kunokwanisa DVD player uye terevhizheni kana video projector.
The Bottom Line
Progressive Scan imwe yezvidzidzo zvehutano hwekuvandudza TV uye musha wekuona maonero ekuona. Sezvo yakatanga kushandiswa, zvinhu zvakashanduka. Dhiyabhorosi ikozvino inogara neBlu-ray , uye HDTV iri kuenderera ku 4K Ultra HD TV , uye nekufambira mberi kwakadaro hakusi kungova chikamu chekuti mifananidzo inoratidzirwa sei pachigadziko, asiwo yakapa imwe nheyo yekuwedzera mamwe maitiro ekugadzira mavhidhiyo, zvakadai sevhidhiyo upscaling .