Plasma TVs, zoo li LCD thiab OLED TVs, yog ib hom TV vaj huam sib luag. Txawm hais tias cov TVs zoo sib xws rau sab nraud, muaj qhov sib txawv ntawm sab hauv. Kawm seb cov plasma TVs ua haujlwm li cas thiab seb cov TVs no puas tsim nyog khaws cia.
Nyob rau xyoo 2014, Panasonic, Samsung, thiab LG tshaj tawm qhov kawg ntawm plasma TV ntau lawm, ua tau zoo txiav tawm hom TV no. Kab lus no yog khaws cia rau keeb kwm siv.
Plasma TV ua haujlwm li cas?
Plasma TV thev naus laus zis zoo ib yam li siv hauv lub teeb fluorescent. Cov zaub vaj huam sib luag muaj cov hlwb, txhua qhov muaj ob lub iav vaj huam sib luag uas tau sib cais los ntawm qhov nqaim. Neon-xenon roj yog txhaj thiab kaw hauv plasma daim ntawv thaum lub sijhawm tsim khoom. Cov pa roj yog hluav taws xob them rau lub sijhawm tshwj xeeb thaum siv cov plasma. Cov roj hluav taws xob raug them liab, ntsuab, thiab xiav phosphors, tsim cov duab hauv TV.
Plasma TV thev naus laus zis txawv ntawm nws cov thawj coj tam sim ntawd, cov tsoos cathode ray tube (CRT) TV. Lub CRT yog lub tshuab nqus tsev loj uas lub teeb hluav taws xob emanating los ntawm ib qho taw tes hauv lub caj dab ntawm lub raj xaim lub ntsej muag ntawm lub raj sai sai. Cov xim liab, ntsuab, lossis xiav phosphors ntawm lub raj nplaim yog tom qab ntawd taws los tsim cov duab.
Nrog plasma TVs siv lub kaw lus kaw nrog cov ntshav plasma rau txhua pixel, qhov xav tau ntawm lub tshuab hluav taws xob scanning yuav raug tshem tawm. Yog li, tsis tas yuav muaj lub tshuab nqus tsev loj. Qhov no yog vim li cas CRT TVs zoo li zoo li lub thawv, thiab cov plasma TVs nyias thiab tiaj tus.
Txhua pawg liab, ntsuab, thiab xiav phosphors ntawm lub plasma TV hu ua pixel (daim duab keeb).
Plasma TVs kav ntev npaum li cas?
Thaum ntxov plasma TVs muaj ib nrab-lub neej ntawm li 30,000 teev, uas txhais tau hais tias cov duab poob kwv yees li 50 feem pua ntawm nws qhov ci ntsa iab tom qab 30, 000 teev saib. Txawm li cas los xij, vim muaj kev txhim kho thev naus laus zis ntau xyoo dhau los, feem ntau cov plasma teeb muaj 60, 000-teev lifespan, nrog rau qee qhov kev ntsuas siab txog 100, 000 teev.
Yog lub plasma TV muaj 30, 000-teev kev ntsuam xyuas thiab nyob rau yim teev hauv ib hnub, nws ib nrab-lub neej yuav yog cuaj xyoos. Yog tias nws nyob rau plaub teev ib hnub, ib nrab-lub neej yuav yog 18 xyoo. Muab ob npaug rau cov nuj nqis no rau 60,000-teev ib nrab-lub neej. Yog hais tias lub plasma TV muaj 100, 000-teev ntsuam xyuas thiab nyob rau 6 teev nyob rau ib hnub, nws ib nrab-lub neej yuav yog 40 xyoo. Txawm nyob rau 24 teev ib hnub twg, 100,000-teev ib nrab ntawm lub neej yog 10 xyoo.
Rau qhov sib piv, CRT TV poob txog 30 feem pua ntawm nws qhov ci ci tom qab kwv yees li 20,000 teev. Txij li cov txheej txheem no yog maj mam, feem ntau cov neeg saib tsis paub txog qhov cuam tshuam no. Txawm li cas los xij, lawv yuav tsum tau kho qhov ci ntsa iab thiab qhov sib txawv ntawm cov tswj tsis tu ncua kom them rov qab. Raws li nrog txhua lub TV thev naus laus zis, tso saib lub neej tseem tuaj yeem cuam tshuam los ntawm ib puag ncig hloov pauv, xws li cua sov thiab av noo.
kab hauv qab
Cov pa roj hauv lub plasma TV tsis xau, thiab tsis tuaj yeem tso roj ntau ntxiv rau hauv. Txhua pixel lub ntsiab lus yog cov qauv kaw tag nrho (xws li lub xov tooj ntawm tes), uas suav nrog phosphor, them daim phiaj, thiab cov roj ntshav plasma.. Yog tias lub xovtooj tsis ua haujlwm, nws tsis tuaj yeem kho los ntawm kev them cov roj rov qab. Yog tias muaj ntau lub hlwb mus tsaus, tag nrho lub vaj huam sib luag yuav tsum tau hloov.
Puas Plasma TV ua haujlwm ntawm qhov siab siab?
Feem ntau cov plasma TVs tau ntsuas rau kev ua haujlwm zoo ntawm, lossis ze, dej hiav txwv. Txij li cov ntsiab lus pixel ntawm lub plasma TV yog iav vaj tsev uas muaj cov pa roj tsawg, cov cua nyias ua rau muaj kev ntxhov siab ntau dua ntawm cov pa hauv tsev.
Raws li qhov siab nce, plasma TVs ua haujlwm hnyav dua los them rau qhov sib txawv ntawm huab cua sab nraud. Raws li qhov tshwm sim, lub teeb tsim hluav taws xob ntau dua, thiab nws cov kiv cua txias (yog tias nws muaj) ua haujlwm hnyav dua. Qhov no yuav ua rau lub suab nrov. Tsis tas li ntawd, ib nrab-lub neej ntawm plasma TV tau txo qis me ntsis.
Rau cov neeg siv khoom feem ntau, qhov no tsis yog qhov teeb meem. Tseem, muaj kev txiav txim siab yog tias koj nyob hauv thaj chaw tshaj 4,000 feet saum hiav txwv. Qee lub plasma TVs muaj zog txaus los ua haujlwm zoo ntawm qhov siab txog li 5,000 ko taw lossis ntau dua. Muaj qhov siab siab versions ntawm qee lub plasma TVs uas tuaj yeem tuav tau txog li 8,000 feet.
Puas Plasma TVs tsim kom muaj cua sov?
Vim tias cov TVs hauv plasma siv roj, lub teeb yuav sov so tom qab ua haujlwm ib ntus. Txij li feem ntau cov plasma TVs yog phab ntsa lossis sawv ntsug, cov cua sov feem ntau tsis yog qhov teeb meem nrog huab cua ntau. Txawm li cas los xij, plasma TVs siv zog ntau dua li tus qauv CRT lossis LCD teeb.
Tsis txhob tso lub plasma TV rau hauv qhov chaw nruj uas nws yuav tsis muaj chaw txaus los ua kom cov cua sov uas nws tsim.
Dab tsi yog Sub-Field Drive ntawm Plasma TV?
TVs ntiav tus nqi refresh thiab ua haujlwm kom pom cov duab du. LCD thiab plasma TVs feem ntau muaj 60hz refresh npaum li cas, tab sis qhov ntawd tsis txaus. Txhawm rau txhim kho cov lus teb, plasma TVs siv thev naus laus zis ntxiv hu ua sub-field drive.
Ntau tus neeg yuav khoom TV xav tias qhov kev tsav tsheb me me yog piv rau qhov ntsuas qhov ntsuas tshiab siv hauv LCD TVs. Txawm li cas los xij, sub-field tsav tus nqi ntawm plasma TVs ua haujlwm txawv.
Puas yog Txhua Lub Plasma TVs HDTVs?
Rau lub TV kom muab faib ua HDTV lossis HDTV-npaj, nws yuav tsum tso saib tsawg kawg 1024 x 768 pixels. Thaum qee lub plasma TVs ua tau raws li qhov yuav tsum tau ua rau HD, tsis muaj plasma TVs tso saib 4K daws teeb meem, tshwj tsis yog rau cov npo loj ua rau kev lag luam siv.
Qee cov qauv thaum ntxov plasma TVs tsuas yog tso saib 852 x 480. Cov teeb no raug xa mus rau EDTVs (Extended lossis Enhanced Definition TVs) lossis ED-plasmas. ED cov kev daws teeb meem zoo rau DVDs thiab cov qauv digital cable, tab sis tsis yog rau HD qhov chaw. Plasma TVs uas tso saib HDTV cov teeb liab kom raug muaj lub pixel daws teeb meem tsawg kawg yog 1280 x 720 (720p) lossis siab dua.
Qee lub tuam txhab sau npe lawv 1024 x 768 plasma TVs ua EDTVs lossis ED-plasmas, thaum lwm tus tau sau lawv li ntshav HDTVs. Qhov no yog qhov uas saib cov specifications tseem ceeb. Yog tias koj tab tom nrhiav qhov tseeb HD-muaj peev xwm plasma TV, kos rau pixel daws teeb meem ntawm 720p lossis 1080p.
Plasma TVs thiab Scaling
Vim tias cov plasma TVs muaj pes tsawg tus pixels, kev daws teeb meem siab dua yuav tsum tau ntsuas kom haum rau pixel teb suav ntawm cov plasma zaub. HDTV input hom ntawv ntawm 1080p xav tau cov zaub ntawm 1920 x 1080 pixels rau ib-rau-ib pixel zaub ntawm HDTV duab.
Yog tias lub plasma TV tsuas muaj pixel teb ntawm 1024 x 768, thawj HDTV teeb liab yuav tsum tau ntsuas kom haum rau qhov pixel suav. Yog li, txawm tias koj lub plasma TV tau tshaj tawm raws li HDTV nrog 1024 x 768 pixel screen, HDTV teeb liab inputs yuav raug txo qis. Yog tias koj muaj EDTV nrog 852 x 480 daws teeb meem, txhua qhov HDTV teeb liab yuav tsum tau scaled down.
Qhov kev daws teeb meem ntawm cov duab pom ntawm lub vijtsam tsis yog ib txwm ua raws li qhov kev daws teeb meem ntawm thawj cov tswv yim teeb liab.
kab hauv qab
Txhua tus neeg siv khoom plasma TVs ua haujlwm nrog txhua yam khoom siv yees duab uas twb muaj lawm nrog cov qauv AV, cov yeeb yaj kiab tiv thaiv, lossis HDMI tso tawm. Txij li VHS yog qhov kev daws teeb meem qis thiab muaj xim tsis zoo sib xws, nws tsis zoo li ntawm lub vijtsam plasma loj li nws ua ntawm lub TV me 27-nti. Txhawm rau kom tau txais txiaj ntsig zoo tshaj plaws ntawm koj lub plasma TV, siv Blu-duab tshav Disc player lossis lub tshuab ua kom zoo dua DVD.
Dab tsi Koj Yuav Tsum Siv Plasma TV?
Ntawm no yog qee cov lus qhia txog qhov koj xav tau nyiaj txiag ntxiv rau koj lub plasma TV kom siv nws kom muaj peev xwm:
- A surge protector.
- A suab kaws. Txawm hais tias qee lub plasma TVs muaj lub suab sab hauv, nws yog qhov zoo tshaj los txuas nws mus rau lub suab nrov lossis lub tsev ua yeeb yam txais tos.
- Cov kab txuas txuas txuas rau koj lub plasma TV nrog koj lwm yam khoom.
- Cov khoom siv, xws li Blu-duab tshav players, video game consoles, satellite lossis cable thawv, media streamers, thiab lwm yam.
Koj Yuav Tsum Khaws Koj Lub Plasma TV?
Yog tias koj lub plasma TV tseem ua haujlwm zoo rau koj, tsis muaj laj thawj pov nws tawm. Txawm li cas los xij, koj tuaj yeem txhim kho koj qhov kev pom los ntawm kev kho dua tshiab rau hom TV tshiab.
Txij li thaum lub plasma TVs tau raug txiav lawm, cov neeg tsim TV tau tshaj tawm cov thev naus laus zis tshiab xws li 4K cov duab, HDR, Wide Color Gamut, thiab Quantum Dots (qee zaum hu ua QLED) rau hauv OLED thiab LCD TVs. Ua ntej koj yuav lub TV tshiab, sib piv txhua hom thiab qhov ntau thiab tsawg los saib seb qhov twg ua haujlwm zoo tshaj rau koj.
