Kev yuav khoom rau TV zoo tshaj plaws yuav tsum tsis txhob ua haujlwm nyuaj. Tsis txhob siv koj lub sij hawm sib txuas los ntawm cov lus qhia tshwj xeeb thiab txheeb xyuas qhov nws txhais tau li cas, koj tuaj yeem zaum ntawm lub rooj zaum rov saib koj nyiam qhov chaw ua haujlwm sitcom hauv lub ntsiab lus siab - lossis ua si pab pawg tua neeg ntawm Xbox Ib, PS4, lossis Nintendo Hloov.
Pab koj txheeb xyuas cov ntsiab lus tsis paub, xws li "kev daws teeb meem" thiab "tus nqi rov ua dua tshiab," peb tau ua qhov kev nqa hnyav rau koj, rhuav tshem txhua lub vaj huam sib luag los ntawm lub npe kom koj tuaj yeem txiav txim siab yuav khoom los ntawm Lub sijhawm Dub Friday thiab Cyber Monday dov ib ncig.
TV Resolution: Dab tsi yog Nws thiab Dab Tsi Yog Qhov Siab Tshaj?
Yog tias ib lub pixel yog ib qho ntawm ntau lab ntawm cov squares me me uas tsim cov duab ntawm koj lub vijtsam, TV daws teeb meem yog tus lej ntawm pixels teem vertically multiplied los ntawm cov uas tso tawm horizontally. Zoo li qhov ntev ntawm ib qho duab ob sab, qhov kev daws teeb meem tau sau tawm raws li cov pixels dav los ntawm cov pixels siab.
Qhov ntau pixels lub TV muaj, cov duab ntse dua thiab muaj tseeb dua. Thaum cov kiv cua avid kev ua si thiab gamers yuav raug ntxias kom xaiv qhov kev daws teeb meem siab tshaj plaws, nco ntsoov tias cov ntsiab lus ntawm lub vijtsam yuav tsum xub tsim los txhawb qhov kev daws teeb meem ntawd. Raws li kev sau ntawv no Feem ntau console games khiav ntawm 1080p raws li lawv qhov kev daws teeb meem. TV qhia, ntawm qhov tod tes, feem ntau yog cua hauv 1080i, qhov sib npaug sib npaug ntawm 1080p.
Online streaming cov kev pabcuam suav nrog Netflix, Hulu, thiab Amazon Prime Video, txawm li cas los xij, txhua tus muaj 4K UHD programming, qee zaum rau tus nqi ntxiv. Nrog cov cuab yeej zoo, koj tuaj yeem ua si koj nyiam PC games hauv 4K thaum txuas nrog lub TV txhawb nqa. Rau kev sib piv, tus qauv daws teeb meem rau 1080p npo yog 1920x1080 pixels. Los ntawm kev sib piv, 4K TV muaj kev daws teeb meem ntawm 3840x2160 pixels. Kom meej meej, 4K muaj peev xwm ua kom pom tseeb dua. Txij li thaum tus nqi ntawm 4K tau poob tsis tu ncua, kev nqis peev ntxiv yuav yog qhov kev xaiv zoo rau yav tom ntej.
Nws tsis tso tseg. 8K TVs yog qhov txuas ntxiv mus rau lub qab ntug. Zoo li kev txav los ntawm 1080p mus rau 4K, muaj qhov kev daws teeb meem loj dhia nrog 8K, mus rau 7680x4320. Tam sim no, qhov ntawd yuav zoo li koj xav dhia ntawm 8K rau lub TV yav tom ntej, puas yog? Nws tsis yooj yim li ntawd. 8K TVs tuaj nrog tus nqi siab heev, thiab tam sim no, tsis muaj 8K cov ntsiab lus muaj. Yog li, koj yuav tau daig saib 4K cov ntsiab lus ntawm koj 8K TV rau ob peb xyoos tom ntej no. Qhov no tsis yog ib qho kev nqis peev zoo, tsuas yog tsis tau.
Zoo TV Loj: Yam Koj Yuav Tsum Yuav Rau Koj Chav?
Nws tau dhau los ua qhov deb npaum li cas koj zaum ntawm TV txiav txim siab qhov loj koj yuav tsum yuav rau chav tsev. Hauv koj chav nyob, piv txwv li, koj tuaj yeem zaum 10-20 ko taw deb ntawm koj lub TV, deb txaus tsis pom qhov txawv ntawm 720p thiab 1080p.
Tam sim no, raws li pixel ceev nce, peb tsis tas yuav nyob deb ntawm peb tus kheej ntau npaum li ntawm TV kom pom cov duab meej tshaj plaws. Raws li qhov tshwm sim, lub ntiaj teb qhov nruab nrab TV loj tau nce los ntawm yuav luag tsib ntiv tes, raws li Statista, nyob nruab nrab ntawm xyoo 2015 thiab 2018. Peb tsis nyob hauv peb lub rooj zaum nyob deb, squinting ntawm cov ntawv sau, thiab ua txuj hnov kev sib tham los ntawm cov neeg hais lus onboard..
Raws li ob peb xyoos dhau los, ntau tus tswv tsev thiab cov neeg xauj tsev tau pib txav lawv chav tsev zaum ze ze rau lawv lub TV, ua rau nws yooj yim dua zaum rov qab thiab txaus siab rau qhov tsis txaus siab ntawm qhov ntim ib txwm tsis xav tau lub koob yees duab. Thiab raws li lawv cov bezels tau me dua, koj tuaj yeem haum 65- lossis txawm tias 75-nti TV hauv koj lub tsev, txawm tias koj nyob hauv chav tsev studio lossis tsev plaub-zaj dab neeg.
Smart TVs: Yam Koj Yuav Tsum Tau Txais?
Thaum koj ncav cuag qhov loj me thiab tus nqi taw tes, feem ntau TVs tsis tas yuav siv cov khoom siv hauv online streaming sab nraud. Los ntawm kev yuav ib lub TV ntse, koj tuaj yeem txuag tau cov nyiaj uas koj yuav siv lwm yam ntawm Roku lossis Chromecast, lossis Hluav Taws TV vim tias cov TV ntse tau teeb tsa ua haujlwm ua haujlwm hauv. Koj tuaj yeem tshaj tawm cov yeeb yaj kiab, suab paj nruag, games, thiab ntau dua ncaj qha los ntawm TV nws tus kheej.
Nyob ntawm koj lub npe TV ntse, cov apps thiab tus qauv tsim interface yuav txawv ntawm ib tus qauv mus rau tom ntej. Qhov ntawd yog vim muaj ntau yam kev khiav hauj lwm systems (OSes) los yog platforms uas tuaj yeem tuaj yeem ntsia ua ntej ntawm lub TV ntse. Cov tuam txhab ntse TV sib txawv nruab cov kev khiav hauj lwm sib txawv tawm ntawm lub thawv xws li khoos phis tawj (Windows vs. Mac) thiab xov tooj (iOS vs. Android).
Koj tuaj yeem cia siab tias txhua lub TV ntse tsim los ntawm TCL, HiSense, RCA, lossis Element los ua kom muaj Roku OS, tib qhov pom ntawm lub tuam txhab cov khoom siv nrov sab nraud xws li Roku Streaming Stick thiab Roku Premiere. Los ntawm kev sib piv, Insignia thiab Toshiba TVs muaj Amazon's Fire TV OS built-in, thaum Samsung thiab LG ua lawv OSes, dubbed webOS thiab Tizen, feem. Thaum kawg, Google muab ib qho version ntawm nws lub xov tooj ntawm tes rau Sony Bravia TVs hu ua Android TV.
Vim tias lawv cov platforms zoo ib yam li cov xov tooj smartphones, nws yuav tsum tsis muaj qhov xav tsis thoob tias ntau lub TV ntse txawm ua haujlwm nrog lub suab pab xws li Alexa thiab Google Assistant. Siv koj cov chaw taws teeb ntse TV, koj tuaj yeem nug koj tus neeg pab cuam lub suab xaiv los qhib TV, hloov lub ntim, hloov cov channel, thiab ntau dua. Koj tuaj yeem hais kom nws ua yeeb yam tshwj xeeb lossis tso tawm cov apps txhawb nqa, txhais tes dawb kiag li.
Tau kawg, vim nws yuav tsum tau txuas nrog Is Taws Nem txhawm rau tshaj tawm cov yeeb yaj kiab uas koj nyiam tshaj plaws, txhua lub TV ntse xav kom koj tus neeg muab kev pabcuam hauv is taws nem (ISP) txhawm rau muab qhov nrawm nrawm tsawg kawg 5Mbps rau streaming HD thiab puv HD. cov ntsiab lus lossis 25Mbps rau 4K UHD cov ntsiab lus.
TV Display Tech: LED vs OLED
Ib LCD (kua siv lead ua kua) tso saib, raws li peb tus kheej txhais, siv "kua siv lead ua kua los hloov pixels rau thiab tawm kom pom cov xim tshwj xeeb." Cov piv txwv qub ntawm cov thev naus laus zis no tau rov qab nrog lub teeb txias cathode fluorescent (CCFLs). Los ntawm tib lub token, LED (lub teeb-emitting diode) vaj huam sib luag yog LCD, txawm tias nrog LED backlighting es tsis txhob CCFLs. Vim tias LEDs me dua thiab ntau dua li CCFLs, LED TVs yog nyias dua li lawv cov thawj coj. Lawv kuj ci dua.
Ua kom paub meej spec-dive thiab koj yuav pom LED TVs hauv ob qhov sib txawv: tag nrho-array backlighting thiab ntug teeb pom kev zoo. Full-array backlighting, raws li nws lub npe qhia, pauv CCFLs yav dhau los rau "tag nrho array" ntawm LED teeb, tawg thoob plaws hauv cheeb tsam nyob tom qab lub vijtsam. Nyob rau hauv sib piv, ntug teeb pom kev zoo tso LED strips rau ntawm ntug sab nraud qab ntawm lub vijtsam, tsis quav ntsej qhov chaw hauv nruab nrab kom txo cov nqi tsim khoom. Txawm hais tias qhov kev pom zoo no, ntug-lit LED TVs tseem ci dua li cov LCDs ib txwm muaj.
Nyob rau hauv xyoo tas los no, Samsung thiab LG tau pib ua lag luam qee yam ntawm lawv cov TVs ua "QLED," luv luv rau Quantum Dot LED. Cov thev naus laus zis no zoo ib yam li LCD tab sis nrog kev sib tw me ntsis: Nws siv cov molecules me me tso rau ntawm zaj duab xis (hu ua quantum dots) uas tawm ntawm lawv tus kheej ntawm nws tus kheej xim xim. Txawm li cas los xij, zoo li LCD thiab LED TVs, cov vaj huam sib luag no tseem cia siab rau LED backlighting. Nyob rau hauv luv luv, QLED yog ib lo lus lag luam uas feem ntau tuaj yeem yuam kev vim nws zoo li thiab suab piv rau OLED, qhov kev xaiv zoo tshaj plaws ntawm kev ua lag luam tam sim no.
Nyob rau sab saum toj ntawm cov saw, OLED TVs tuaj yeem xaiv thiab xaiv, ib tus zuj zus, uas pixels los teeb. Qhov tseeb, qhov no ua rau cov xim dub tob dua, qhov sib txawv dua, thiab qhov tsis tau pom dua ntawm cov xim raug ntxiv rau qhov pom dav dua. Tsis zoo li LED TVs, OLED TV backlighting yog tiav los ntawm kev siv lub teeb-emitting zaj duab xis txheej uas occupies tag nrho cov tshuaj ntsuam. Txawm hais tias tsaus dua li lawv cov khoom siv LED, thaum ua ke nrog HDR, OLED TVs ncov ntawm 800 nits thaum qee cov LEDs tuaj yeem tswj tau 1500-1200 nits.
TV Refresh Rate: 60Hz vs 120Hz vs 240Hz
Ntawm lub TV, tus nqi refresh yog "qhov siab tshaj plaws ntawm lub sijhawm cov duab ntawm lub vijtsam tuaj yeem kos tau, lossis rov ua dua tshiab, ib ob." Ntsuas hauv hertz (Hz). Qhov refresh npaum li cas ntawm lub TV pab txiav txim siab seb daim duab meej npaum li cas thaum lub sijhawm txav. Tej zaum koj yuav tau pom tias ib qho duab crystal ntshiab yuav ua rau pom qhov muag tsis pom, qhov kev txav ntau dua ntawm qhov screen. Tus nqi refresh ntau dua tso cai rau ntau lub thav duab ntawm cov yeeb yaj kiab los tso saib, ua kom cov duab zoo nkauj.
Feem ntau TVs muaj tus nqi refresh ntawm 60Hz; uas yog lub neej ntawd, thiab nws tau ntev lawm. Lub sijhawm dhau los, 120Hz TVs tau nce hauv qhov chaw. Piv txwv tias koj muaj 60Hz qauv, koj lub TV tuaj yeem tso saib qhov siab tshaj plaws ntawm 60 ntas ib ob (fps), thaum lub vijtsam 120Hz muaj peev xwm ntawm 120fps.
Thaum ntxov, nws yog ntau ntawm kev lag luam gimmick. Cov neeg tsim khoom siv cov duab ua thev naus laus zis los tsim cov nyhuv ntawm 120Hz refresh npaum li cas yam tsis muaj TV tiag tiag muaj peev xwm ntawm nws. Qhov ntawd yog dab tsi tshwm sim nrog cov ntsiab lus xws li "kev txav mus los" lossis "zoo refresh npaum li cas." Ntau lub tuam txhab muaj lawv tus kheej lub npe rau cov thev naus laus zis ib yam nkaus.
Thaum koj tab tom nrhiav TV nrog tus nqi tshiab dua, nrhiav tus nqi 120Hz. Muaj feem yuav yog, lub thawv yuav tsis muaj kev lag luam zoo nkauj hais txog tus nqi. Nws yog ntau dua, tam sim no, nrhiav qhov tseeb 120Hz TVs, yog li cia li zam kev lag luam, thiab koj yuav zoo.
Thaum kawg, koj tuaj yeem pom TVs nyob ib puag ncig nrog 240Hz refresh npaum li cas. Nco ntsoov li cas 120Hz feem ntau yog kev lag luam thaum pib, nrog cov duab zoo nkauj tsim cov nyhuv? Qhov ntawd yog qhov tshwm sim nrog 240Hz TVs tam sim no. Tsis muaj dab tsi tsis ncaj ncees lawm nrog kev yuav 240Hz TV, tab sis feem ntau nws tsis tsim nyog, thiab kev txhim kho koj pom dua 120Hz yog qhov ua kom yuam kev ntawm lub qhov muag.
