I-DVD Nama-TV namanje
Ngokufika kwe-HDTV (futhi, maduze nje, i- 4K Ultra HD TV ), ukuthuthukiswa kwezingxenye ukufanisa amandla okuxazulula kulawo maTV kubaluleke kakhulu. Njengesixazululo, abaningi abadlali beDVD (labo asebekhona) banamakhono "okuphakanyiswayo" ukuze afane kangcono ukusebenza komdlali we-DVD ngamakhono we-HD yanamuhla ne-4K Ultra HD TV.
Noma kunjalo, ukuba khona kwefomethi ye-Blu-ray disc kuye kwadideka udaba mayelana nokuhluka phakathi kwe-upscaling ye-DVD ejwayelekile kanye nencazelo yeqiniso ephezulu ye-Blu-ray.
Ukuze uthole incazelo yevidiyo ye-DVD upscaling nokuthi ihlobene kanjani nevidiyo yeqiniso ecacile, njenge-Blu-ray, qhubeka ufunda ...
I-Standard DVD Resolution
I-DVD format isekela ukulungiswa kwevidiyo yangempela ye-720x480 (480i). Lokhu kusho ukuthi uma ubeka i-disc kumdlali we-DVD, lokho yisinqumo sokuthi umdlali ufunda i-disc. Ngenxa yalokho, i-DVD ihlukaniswa njengefomethi yokulungiswa okujwayelekile.
Nakuba lokhu kwakungcono uma i-DVD ifaka ngo-1997, ngokushesha ngemva kokukhululwa kwe-DVD player abadlali benza isinqumo sokuthuthukisa ikhwalithi yezithombe zeDVD ngokuqaliswa kokucubungula okwengeziwe kwi-signal ye-DVD ngemuva kokufundwa kwi-disc, kodwa ngaphambi kwayo wafinyelela ku-TV. Le nqubo ibizwa ngokuthi i- Progressive Scan .
Abadlali be-DVD abaphenya ngokuqhubekayo bakhiphe isinqumo esifanayo (720x480) njengesidlali se-DVD esivulekile esingenakuqhubekayo, noma kunjalo, ukuskena okuqhubekayo kunikeze isithombe esibheka kalula.
Nasi ukuqhathaniswa kwama-480i no-480p:
- I-480i imelela amaphikseli angu-720 aboniswe ngaphesheya kwesikrini ngokuzungezile nama-pixel angu-480 phansi kweskrini ngokuqondile. Leli lungiselelo liveza imigqa engama-480 enezingqimba, ezibuye zenzeke ngokuhlukile. Ngamanye amazwi, yonke imigqa engaqondakali iboniswa, ilandelwa yizo zonke imigqa.
- I-480p imelela amaphikseli angu-720 aboniswe kwesikrini ngokuzungezile nama-pixel angu-480 phansi kwesikrini ngokuqondile. Leli lungiselelo liveza imigqa engama-480 enezingqimba esibukweni, okuyikho, eboniswa kancane kancane, noma umugqa ngamunye uboniswa ngokulandela omunye.
Inqubo ye-Upscaling
Nakuba ukuskena okuqhubekayo kuhlinzekwe ngcono izithombe zekhwalithi kwi-TV ehambisanayo, ngokusungulwa kwe-HDTV, ngokushesha kwacaca ukuthi nakuba ama-DVD kuphela anikeze isinqumo esingu-720x480, ikhwalithi lalezo zithombe zomsakazo ingathuthukiswa ngisho nokuqhubeka ngokusebenzisa inqubo ebizwa nge-Upscaling.
Ukukhishwa kwe-intanethi yinqubo eyenza ngezibalo ngokulinganisa inani le-pixel kokukhipha kwesignali yeDVD kumbalo wephikseli ngokomzimba kwi-HDTV, ngokuvamile e- 1280x720 (720p) , 1920x1080 (1080i noma 1080p), futhi manje, ama-TV amaningi avela ku- 3840x2160 (2160p noma 4K) .
- I-720p imelela amaphikseli angu-1,280 aboniswe kwesikrini ngokuzungezile namaphikiseli angu-720 phansi kweskrini ngokuqondile. Leli lungiselelo liveza imigqa engu-720 enezingqimba esibukweni, okuyikho, eboniswa kancane kancane, noma umugqa ngamunye uboniswa ngokulandelayo.
- I-1080i imelela amaphikseli angu-1,920 aboniswe ngaphesheya kwesikrini ngokuzungezile namaphikiseli angu-1,080 phansi kwesikrini ngokuqondile. Leli lungiselelo liveza imigqa eyi-1,080 enezingqimba, ezibuye zenzeke ngokuhlukile. Ngamanye amazwi, yonke imigqa engaqondakali iboniswa, ilandelwa yizo zonke imigqa.
- I-1080p , imelela imigqa engu-1,080 enezingqimba eboniswa ngokulandelana. Lokhu kusho ukuthi yonke imigqa iboniswa ngesikhathi esidlule.
- 4K (noma 2160p) , ngakolunye uhlangothi, imelela imigqa engu-3,480 enezingqimba eboniswa ngokulandelana. Lokhu kusho ukuthi yonke imigqa iboniswa ngesikhathi esidlule. I-4K yifomethi yokubonisa ye-HD ephezulu kakhulu.
Umphumela Osebenzayo we-DVD Upscaling
Ngokubukeka, kukhona umehluko omkhulu emehlweni omthengi ophakathi phakathi kuka- 720p no-1080i . Kodwa-ke, i-720p ingaletha isithombe esibhekene nesisindo esincane, ngenxa yokuthi imigqa namaphikseli aboniswa kwiphethini elilandelanayo, kunokuba kusetshenziswe enye iphethini.
Inqubo ye-upscaling yenza umsebenzi omuhle wokufanisa ukukhipha kwephikseli okuphakanyisiwe kwesidlali seDVD kusixazululo sokubonisa umbukiso we-pixel we-TV ye-HDTV, okwenza kube nemininingwane engcono kanye nokungafani kombala.
Noma kunjalo, upscaling, njengamanje ukusebenza, ayikwazi ukuguqula standard DVD izithombe zibe eqinisweni high-definition (noma 4K) izithombe. Eqinisweni, nakuba i-upscaling isebenza kahle nge-pixel ekhonjiswayo, njengama- Plasma , i- LCD , nama-TV e- OLED , imiphumela ayihlale ihambisana ne-HDTV esekelwe kwi-CRT (ngenhlanhla ayikho eminingi kakhulu kulawo asetshenziswayo).
Amaphuzu Okumele Akukhumbule Mayelana nama-DVD ne-DVD Upscaling:
- Noma yisiphi isidlali se-DVD singashukela ku-HDTV. Nakuba abadlali be-DVD abaphezulu bekwazi ukufanisa ukulungiswa kwe-pixel yemvelo ye-HDTV, ungase ube nemiphumela emihle kumdlali we-DVD evamile (ngaphandle kokuskena okuqhubekayo noma ikhono lokuphakamisa) elixhumeke nge-component ye-HDTV enikeziwe noma ama-S-Video (Inothi : ama-TV amaningi amasha ayenawo amavidiyo we-S-video).
- Uma unayo i-HDTV (noma i-4K Ultra HD TV), ne-DVD player ejwayelekile, uzothola imiphumela engcono kakhulu usebenzisa uxhumano lwevidyo le-Component (obomvu-oluhlaza okwesibhakabhaka) phakathi komdlali we-DVD ne-HDTV. Ngaphezu kwalokho, uma i-DVD yakho idinga ukuskena okuqhubekayo, sebenzisa njalo lokho uma uxhumeke ku-T ehamba phambili ekwazi ukuskena. Noma kunjalo, uma umdlali wakho we-DVD naye enekhono eliphezulu, uzoba nokuxhumana kwe - HDMI . Sebenzisa uxhumano lwe-HDMI ukuze ufinyelele amandla abadlali be-DVD abaphakamisayo.
- Ividiyo ye-DVD upscaling kuphela ukulinganisa kwe-high definition yokubukwa kwencazelo. Ukuze uthole umthelela ogcwele wokubuka kweqiniso okuphezulu kusuka kufomethi yediski, udinga ukuba nesidlali se-Blu-ray exhunywe kwi-HDTV ngokuxhumeka kwe-HDMI futhi ubuke okuqukethwe okungokoqobo kwe-Blu-ray disc. Ifomethi ye-Blu-ray disc isekela okuqukethwe kwe-720p, 1080i, kanye no-1080p wokuqukethwe.
I-DVD Upscaling vs Blu-ray
- I-DVD engathandwayo (ngisho nalapho ihamba kahle) ayifani ncamashi nekhwalithi yomthombo we-Blu-ray wedethi yomdabu. Uma kuqhathaniswa ne-Blu-ray disc, i-DVD ephakanyisiwe ibukeka ibheka kancane futhi iminyene (ikakhulukazi ngemuva) kunokubheka i-Blu-ray. Futhi, ngokwemibala, uma ubheka ama-Reds ne-Blues, kulula futhi ukutshela umehluko ezimweni eziningi, njengoba nje neDVD ephakanyisiwe, ama-reds kanye ne-blues inomkhuba wokwandisa imininingwane engase ibe ngaphansi, kuyilapho imibala efanayo ku-Blu-ray kunzima kakhulu futhi usabona imininingwane ngaphansi kombala.
- Bonke abadlali be-Blu-ray Disc bangenza umsebenzi we-upscaling kuma-DVD ajwayelekile, uma isidlali se-Blu-ray Disc sixhunywe kwi-HDTV (noma i-4K Ultra HD TV) usebenzisa inketho yokuxhumeka kwe-HDMI.
- Endabeni ye-Ultra HD TV, nakuba umdlali we-DVD ophezulu upscale kuphela ongaphakamisa i-DVD ku-1080p - i-Ultra HD TV izothola leso siginali futhi iqhubeke iphinde i-4K Ultra HD. Futhi, abanye abadlali be-Blu-ray Disc baye bakha-ku-4K upscaling kokubili ukudlala i-DVD ne-Blu-ray Disc. Uma umdlali we-Blu-ray disc engahlinzeki lesi sici, futhi futhi, i-4K Ultra HD TV izophinde ivuselele isignali ye-1080p kusukela kumdlali we-Blu-ray Disc kuya ku-4K.
Ulwazi olungeziwe Abanikazi be-HD-DVD Player
Ifomethi ye-HD-DVD yavalwa ngokomthetho ngo-2008. Kodwa-ke, kulabo abangase babe futhi basebenzise i-HD-DVD player kanye nama-Discs, incazelo efanayo ekhonzwe ngenhla isebenza ebuhlotsheni obuphakathi kwe-DVD Upscaling ne- HD-DVD njengoba kwenza phakathi kwe-DVD upscaling ne-Blu-ray disc.