Njengoba uhlelo oluphezulu lwe-Definition (HDTV) luyatholakala kakhulu ngosuku, kubalulekile ukwazi izimpendulo zemibuzo evamile.
Ingabe Incazelo Ephakeme Ifana Ne-Digital?
Yebo no cha. Incazelo ephezulu yisinqumo esiphezulu sezinga elihlinzekwa ngaphakathi kwesigaba sesethelevishini sedijithali. Ikhebula ledijithali liya emafomethi amathathu - okujwayelekile, okuthuthukisiwe, kanye nokuchazwa okuphezulu. Isimiso sinesinqumo se-480i, sithuthukiswe nge-480p, futhi incazelo ephakeme yi-720p no-1080i. Ngakho-ke, HD idijithali, kodwa akuyona yonke idijithali i-HD.
Abangani Bami Bakuthenga Izinsizakalo Eziphezulu Zokuchaza, kodwa Bayazibiza kakhulu. Ingabe Ngidinga Ngempela Omunye?
Isidingo sethelevishini ye-HD singasetshenziswa. Phela, akuwona wonke izinhlelo ezinikezwa ku-HD, futhi kukhona necala elengeziwe le-HD yokuhlela. Uma ufuna ukuthuthukisa kodwa ungafuni noma udinga izindleko ezengeziwe, ungathola isithombe esihle namanye ama-digital (SDTV no-EDTV). Ungalinda unyaka noma amabili futhi ubone ukuthi kwenzekani ngamanani nezinhlelo.
Izindleko zeTevivishini Ephakeme Ezichaza Ngani, Futhi Ubani Abazenza?
Abakhiqizi abaningi bethelevishini benza ama-HDTV ezinhlobonhlobo zezitayela. Ungathenga i-HD kuma-tubes, ukuhlola kwe-CRT yangemuva, i-LCD, i-DLP, i-LCOS, ne-Plasma. Amanani ububanzi kuye ngokuthi usayizi wesithombe nobuchwepheshe obusetshenzisiwe, kodwa igebe lentengo elinganiselwa ku-$ 500 ye-monitor encane ye-CRT kuya phezulu ku-$ 20,000 yamuva ku-Plasma technology.
Ingabe Kudingeka Ngibhalisele Ikhebula / I-Satellite ukuthola I-HDTV?
Cha, amanethiwekhi amanethiwekhi amaningi azungeze i-United States asevele athumele izimpawu ezicacile eziphezulu ngaphezulu. Okudingayo i-HDTV ene- tuner eyakhelwe ngaphakathi , ne-HD Antenna ukucacisa isignali. Noma kunjalo, uma ufuna ukuthola isignali ye-HD engasetshenzisiwe (TNT, HBO, ESPN), kuzodingeka ulandele iphakheji yekhebula / satellite.
Ingabe Umhlinzeki Wami Wekhamera / I-Satellite unikeza i-HDTV? Uma kunjalo, Yini Engayidinga?
Abanikeli abaningi bama-cable / satellite banikeza uhlobo oluthile lokuhlelwa kwencazelo. Ngokujwayelekile, bakhokhisa imali eyengeziwe futhi bakudinga ukuba uqashe noma uthenge isamukeli sencazelo ephezulu. Noma kunjalo, unganciphisa izindleko zakho zanyangazonke ngokuthenga i-HD yomamukeli ezindaweni zokuthengisa nezitolo ze-intanethi. Ukuthola imigomo yokusetshenziswa nezindleko, thintana nomhlinzeki wendawo yekhebula / satellite.
Nginayo i-HDTV Iphakheji enikezwa yi-My Cable / Satellite Provider, kodwa uDon & # 39; t Thola i-Hd Signal. Yini Enikezayo?
Uthola isignali kodwa kungenzeka ukuthi awunayo amathuluzi ukuze uwuthole. Okokuqala, qiniseka ukuthi unayo ithelevishini ephezulu nenkomba. Uma kunjalo, thola iziteshi ze-HD ekuhlelweni kwakho kokuhlela njengoba iziteshi zihlukaniswa phakathi kwe-HD neziteshi ezingekho ze-HD. Futhi, qinisekisa uhlelo obukayo olunikezwa ku-HD. Iziteshi eziningi ze-HD ziqhuba isignali engeyona i-HD uma ibonisa izinhlelo ezingekho ze-HD. Kubalulekile ukuthi uqaphele ukuthi kungase kudingeke ukuthi uhlole ukucushwa kwamathelevishini ukuze uqiniseke ukuthi usethelwe ku-1080i noma ngo-720p. Uma ku-480p, awubheke i-HDTV noma ngabe uhlelo luhlinzekwa nge-HD njenge-480p yisinqumo sokuchazwa okuthuthukisiwe.
Yimuphi uhlobo lohlelo olunikezwa ku-HD?
Ukuhlela kuyahlukahluka kusuka esiteshini kuya esiteshini, futhi sicela uqaphele ukuthi akuzona zonke iziteshi zethelevishini ezifaka uhlelo oluphezulu lokuchaza. Ezinye zeziteshi ezinkulu ezidlulisela izinhlelo ze-HD zihlanganisa amanethiwekhi amane amakhulu okusakaza, i-TNT, i-ESPN, i-Discover, i-ESPN, ne-HBO.
Yini i-720p no-1080i Okushoyo?
Uma ubheka ithelevishini, isithombe osibona sakhiwa imigqa eminingi ephendulwa ngokuzimela. Beka ndawonye, babhala isithombe esibukweni. I-interlaced and progressive yilezi zindlela ezimbili zokuskena ezisetshenzisiwe. Imigqa yokuxazulula ihlukahluka kumathelevishini e-digital - 480, 720, no-1080. Ngakho-ke, isinqumo sethelevishini sichazwa imigqa nezinhlobo zokuskena. Isixazululo se-720p yithelevishini nemigqa engu-720 eqhutshwa phambili. Isixazululo esingu-1080i sinemigqa engu-1080 elandelwayo. Ngakolunye uhlangothi, ukuskena okuqhubekayo kuzobonisa isithombe esicacile kunasekuqaleni, kodwa uzobona izinhlelo eziningi ze-HD kuboniswa kwisinqumo se-1080i.
Yikuphi Ukulinganisa Okubhekayo Ukuchazwa Okuphakeme Kufika?
Isignali yencazelo ephakeme idluliselwa ku-16: 9 isilinganiso sesici. I-16: 9 ibizwa nangokuthi i-widescreen noma i-letterbox - njengesibuko kumabhayisikobho e-movie. Ungathenga amathelevishini encazelo ephakeme ngezinga elijwayelekile (4: 3) noma ububanzi obukhulu bendawo. Ngempela, kuyindaba yokuthandayo, kungakhathaliseki ukuthi uyathanda isikrini noma isikrini esixubile. Izinhlelo eziningi zingafomathwa ukuze zivumelane naluphi uhlobo lwezinga ozithandayo.