Kuronga kunze kwenharaunda yeDhidhiyo kuparadzirwa kweTV
Kuzadzikiswa kweDTV neHDTV kupararira kuburikidza neDTV Transition iyo yakangoitika musi waJune 12, 2009, yaiva nhau huru yezvakaitika kare, sezvo yakashandura nzira iyo TV inoparidzirwa uye inowanikwa nevatengi muUnited States Zvisinei, kune zvimwe kuvhiringidzika izvo zvinoreva DTV neHDTV chaizvoizvo.
Zvose zvinoparidzirwa neHDTV idhidhiyo, asi kwete yose yeDhidhiyo kuparidzira TV HDTV. Mune mamwe mazwi, bandwidth imwechete yakagadzirirwa kubudiswa kweTV kudii inogona kushandiswa kugadzira signal yevhidhiyo (kana yakawanda) nemamwe mabasa, kana inogona kushandiswa kutumira imwe chiratidzo cheHDTV.
Kunyange zvazvo pane zvigadziro 18 zvakasiyana-siyana zvekugadzirisa zviripo zvakagadzirwa neIndaneti yekutambira TV, yakagamuchirwa ne Advanced Advanced Television Committee (ATSC) , uye iyo yose Digital TV tuners inofanirwa kuongorora mafambiro ese 18, kushandiswa kwekushandiswa kweDTV kuparidzira kwasvika kusvika kusarudzo 3 mafomu: 480p, 720p, uye 1080i.
480p
Kana iwe unofambira mberi scan DVD player neTV , unoziva 480p (mitsara 480 yekugadziriswa, yakarongedzwa zvishoma nezvishoma). 480p yakafanana nesarudzo imwechete yeAnalogog Broadcast TV asi inoparidzirwa digital (DTV). Inotumidzwa se SDTV (Standard Definition Television), asi mufananidzo unotaridzirwa zvishoma nezvishoma, panzvimbo mune dzimwe nzvimbo sezvakafanana nekutarisa TV yeAnalogog.
480p inopa mifananidzo yakaisvonaka (kunyanya pamaduku masere 19-29 "makirati. yakarasika pamakona makuru ekuisa zvinyorwa (somuenzaniso, maTV ane masikirwo emakiromita 32 masendimita uye kumusoro).
Zvisinei, kunyange zvazvo 480p chikamu chechibvumirano cheDTV chekuparidzira, haisi HDTV. Uyu muyero wakabatanidzwa seimwe yemitemo yeDTV yehupfumi yekupa vashambadziri sarudzo yekupa miviri yakawanda yepurogiramu mune rimwe bhanwidth rimwechete sechiratidzo cheHDTV. Mune mamwe mazwi, 480p zvinongowedzera zvimwe zvaunogona kuona mumushumo weAnalogog, uye kuwedzera zvishoma mumufananidzo wemhando.
720p
720p (720 mitsara yekugadziriswa yakaongororwa zvishoma nezvishoma) iriwo fomu yeVhidhiyo yeTV, asi inoonekwawo seimwe yemafuta ekudhiridza eHTV.
Sezvo zvakadaro, ABC neFOX vanoshandisa 720p sevhisi yavo yeHDTV. Hakusi chete 720p inopa mufananidzo wakajeka, wakafanana nefirimu nekuda kwekufambira mberi kwekushandiswa kwayo, asi zvido zvemufananidzo zvinenge 30% zvakaoma kupfuura 480p. Somugumisiro, 720p inopa kuvandudzwa kwechifananidzo chinogamuchirwa chinoratidzika pane zvose zviri mukati (32 "- 39") zviyero zvemashizha pamwe nekukurukurwa kweefesi. Uyezve, kunyange zvazvo 720p inofungidzirwa nepamusoro-tsanangudzo, inotora zvishoma zvishoma kupfuura 1080i , iyo yakafukidzwa mberi.
1080i
1080i (mamiriyoni 1,080 ekugadziriswa akaenzana mune dzimwe nzvimbo dzakagadzirwa nemitsara 540 imwe neimwe) ndiyo inonyanya kushandiswa inoshandiswa neHDTV yakashandiswa pane-in-air TV kutamba. Iyi mafomu yakagamuchirwa nePBS, NBC, CBS, uye CW (pamwe chete nestaneti shanduro HDNet, TNT, Showtime, HBO, nemamwe mabasa ekubhadhara) sehuwandu hweHDTV. Kunyangwe pane ichiri kukakavadzana pamusoro pekuti zviri nani zvakanyanya kupfuura 720p mune maonero chaiwo emuoni, zvepamusoro, 1080i inopa mufananidzo wakajeka wevose 18 vanobvumirwa DTV tsvina mitemo. Kune rumwe rutivi, izvo zvinotaridzika zvinoonekwa zve 1080i zvakarasika pamakona mashomanana machena (pasi pemakumi maviri nemaviri ").
Zvisinei, zvipingamupinyi zve1080i ndezvi:
- 1080i inotora bandwidth yakawanda yeyese DTV mafaira ekuparidzira.
- 1080i chiratidzo chinopindirana, izvo zvinoreva kuti mufananidzo wakaratidzwa unoumbwa nemitsara kana pixel mitsetse iyo inotaridzirwa / inoratidzirwa zvimwe panzvimbo pfupi zvishoma nezvishoma se480p uye 720p.
- 1080i haikwanisi kuratidzwa mumutauro wayo pane LCD, OLED, Plasma, kana DLP TV . Kuti uratidze mifananidzo inoparidzirwa muna 1080i, iyo mitambo yemasikirwo inoda kushandura chiratidzo che1080i pane 720p kana 1080p kuitira kuti uratidze mufananidzo paTV.
Mune mamwe mazwi, kana iwe une LCD 1080p kana OLED TV, (kana uchiri nePlasma kana DLP TV) iyo ichasunungura chiratidzo che1080i uye ichiratidze sechifananidzo che1080p . Iyi nzira, kana yakaitwa zvakanaka, inobvisa chero mitsetse inooneka inooneka iri mumifananidzo yakashambadzirwa 1080i, zvichiita kuti zvive nyore. Nenzira imwecheteyo, kana iwe une 720p HDTV, yako TV ichasvitsa uye inoderedza chifananidzo che1080i kusvika 720p kuitira skrini kuratidza.
Zvakadini ne1080p?
Kunyange zvazvo 1080p inoshandiswa kuBlu-ray, Cable, uye kubudiswa kweInternet, haisi kushandiswa mune-pamusoro-mumhepo kuparidzirwa kweTV. Chikonzero cheizvi ndechekuti kana Digital Digital kuparidzirwa mitemo yakabvumidzwa, 1080p yakanga isiri chikamu chekuenzanisa. Somugumisiro vaterevhizi veTV havatauri pamusoro pe-in-air zviratidzo zveTV mune chisarudzo che1080p.
Zvimwe Kuuya - 4K uye 8K
Kunyange zvazvo kubudiswa kweDTV kuenzanirana nezvino, usazorora pakarepo, sezvo rutivi rweruzhinji rwemitemo inotarisirwa kusanganisira sarudzo yeK 4K , uye, mberi kwepamugwagwa, 8K .
Pakutanga, yaifungidzirwa kupararira 4K uye 8K sarudzo pamusoro-in-air haigone kuitika nekuda kwekukura kwechikwata. Zvisinei, pane kuenderera mberi kuedza kwakaguma mukukwanisa kukwanise huwandu hwehuwandu hwehuwandu hwehupfumi hwehupfumi hunoshandiswa huchangobva kucheneswa hutaneti hunoita hutsika hunochengetedza chigumisiro chepamusoro chinodiwa paTV. Somugumisiro, pane kuedza kukuru kwekugadzirisa kusarudzwa kwe 4K muTV kuparidzirwa kuburikidza nokushandiswa kweATSC 3.0 .
Sezvo zviteshi zvepaTV zvinogadzira zvigadziro zvakakodzera uye kutumidzirwa kwekuvandudza, uye vateereri veTV vanotanga kuisa mukana weATSC mumaterevhizheni uye plug-in set-top boxes, vatengi vachakwanisa kuwana 4K TV kutumira, asi, kusiyana nezuva rakaoma raidiwa kuchinja kubva kuAnalogog kusvika kuIndaneti / HDTV kuparidzira, kuchinja kune 4K kunonoka uye ikozvino kuzvidira.
Kuburikidza kwekuparidzirwa kweTV 4K kunotsvaga shure kwevamwe nzira dzekuwana zvinyorwa zve 4K, zvakadai kuburikidza nehutano hwekuendesa internet, kusanganisira Netflix uye Vudu , uyewo kuburikidza nehupenyu hwe Ultra Ultra Blu-ray Disc . Uyezve, DirecTV inopawo 4K satellite feeds .
Zvichakadai, kunyange zvazvo kuedza kukuru kuunza 4K kuTV, Japan inofambisa mberi ne 8K Super Hi-Vision TV Broadcasting format iyo inosanganisira kusvika 22.2 audio audio. Super Hi-Vision yakange iri mukuedzwa kwemakore anodarika gumi uye inotarisirwa kuva yakazara yakashandiswa kushandiswa kwakakura ne2020, ichimirira maitiro ekupedzisira kugamuchirwa.
Zvisinei, apo hupfumi hweTV 8K huchawanika pahuwandu hunofungidzira chero hupi zvayo, semuna 2020, kuparidzirwa kweTV 4K kuchange kusati kwanyatsogadziriswa - kuitira kuti imwe ikwire ku 8K zvichida ichave imwezve makore gumi, kunyanya kana tichifunga kuti vateereri veTV vanogara 't takaita maTV 8K kana zvinyorwa zvinowanikwa kune vatengi - uye kunyange ne2020, maTV akadaro achange ari maduku nhamba. Zvechokwadi, pane zvingafanira 8K zvakagadzikana kutarisa - vaterevhizi veTV vachada kuita imwe huru yekushandisa mari.