Kev Siv Tshuab Tsim Khoom Siv TV nrog 3D Peev Xwm
3D TV yog ib qho ntawm cov kev tsim kho tshiab tshaj plaws hauv kev lag luam khoom siv hluav taws xob rau cov neeg siv khoom. Lub tswv yim ntawm kev tso saib cov duab uas zoo li "dhia tawm ntawm qhov screen" lossis muaj qhov tob hauv ntiaj teb tiag tiag tau ua rau cov tuam txhab tsim TV sib tw los tsim cov thev naus laus zis vaj huam sib luag, kev ua cov duab, thiab txawm tias cov khoom siv txhawb nqa xws li tsom iav tshwj xeeb. Txawm hais tias qhov nrov ntawm 3D TV hauv kev lag luam hauv tsev tau poob qis, cov thev naus laus zis tom qab nws tseem ceeb heev uas yuav tsum nkag siab, vim nws yog lub hauv paus rau ntau qhov kev txhim kho pom niaj hnub - los ntawm VR headsets mus rau lwm cov txheej txheem tso saib immersive. Tsab xov xwm no tham txog cov thev naus laus zis tom qab 3D TVs, lawv cov hauv paus ntsiab lus ua haujlwm, cov khoom tseem ceeb, thiab cov teeb meem uas lawv ntsib.
Cov Ntsiab Cai Tseem Ceeb ntawm 3D Vision
Tib neeg pom qhov tob vim ob lub qhov muag pom cov duab los ntawm cov kaum sib txawv me ntsis. Qhov sib txawv me ntsis no hu ua stereopsis. 3D TV siv lub hauv paus ntsiab lus no los ntawm kev tso saib ob daim duab sib txawv: ib daim rau sab laug qhov muag thiab ib daim rau sab xis qhov muag. Tom qab ntawd lub hlwb mam li muab ob daim no ua ke los tsim kom pom qhov tob.
Yuav kom qhov kev dag ntxias no ua haujlwm tau, lub TV yuav tsum xyuas kom meej tias txhua lub qhov muag tau txais daim duab raug yam tsis muaj "kev xau" ntau dhau rau lwm lub qhov muag. Qhov kev xau no hu ua crosstalk lossis ghosting thiab yog ib qho teeb meem tseem ceeb nrog 3D TVs.
Ob Txoj Kev Tseem Ceeb: Active 3D thiab Passive 3D
Hauv keeb kwm ntawm cov TV 3D hauv tsev, muaj ob txoj kev siv ntau tshaj plaws: active 3D (active shutter) thiab passive 3D (polarized). Ob qho tib si tsom mus rau kev sib cais cov duab sab laug-sab xis, tab sis siv cov txheej txheem sib txawv.
1) Active 3D TV (Active Shutter)
Hauv lub tshuab ua haujlwm, lub TV tso saib cov duab sab laug thiab sab xis hloov pauv ntawm qhov nrawm heev (piv txwv li, 120 Hz lossis ntau dua). Tus neeg saib hnav cov tsom iav uas nws lub lens tuaj yeem tsaus ntuj thiab ci ntsa iab tib lub sijhawm: thaum daim duab rau lub qhov muag sab laug raug tso tawm, lub lens sab xis tsaus ntuj, thiab rov ua dua.
Cov khoom tseem ceeb ntawm lub kaw lus ua haujlwm:
- Ib lub vaj huam sib luag uas muaj qhov refresh rate siab (feem ntau yog 120/240 Hz) kom cov kev hloov pauv ntawm cov duab tsis zoo li ntsais muag.
- Lub kaw lus sib dhos (infrared, Bluetooth, lossis RF) ntawm lub TV thiab cov tsom iav.
- Ib lub processor video uas muaj peev xwm tswj tau cov ncej sequencing thiab tswj lub sijhawm kom raug.
Tshaj:
- Kev daws teeb meem rau ib lub qhov muag feem ntau siab dua vim tias txhua lub qhov muag tuaj yeem tau txais ib daim duab tag nrho (nyob ntawm lub vaj huam sib luag thiab txoj kev ua tiav).
- Qhov tob ntawm qhov cuam tshuam yuav zoo li muaj zog yog tias qhov chaw teeb tsa raug.
Tsis Muaj:
– Cov tsom iav kim dua, xav tau roj teeb, thiab tuaj yeem hnyav.
- Kev pheej hmoo ntawm kev ntsais muag lossis qhov muag qaug zog yog tias kev sib dhos tsis ruaj khov.
- Crosstalk yuav nce ntxiv yog tias lub vaj huam sib luag teb qeeb.
2) TV 3D Passive (Polarized)
Hauv lub tshuab passive, lub TV tso tawm ob daim duab tib lub sijhawm, tab sis lawv yog polarized sib txawv. Cov tsom iav passive muaj cov iav polarized uas lim kom lub qhov muag sab laug pom ib daim duab xwb, thiab lub qhov muag sab xis pom lwm daim.
Ntau lub TV 3D uas siv LCD passive siv cov txheej txheem Film Patterned Retarder (FPR): ib txheej ntawm zaj duab xis polarizing raug siv rau ntawm qhov chaw ntawm lub vaj huam sib luag los tsim cov qauv kab polarization sib txawv ntawm cov kab pixel khib thiab txawm. Yog li ntawd, ib lub qhov muag tau txais ib kab, lwm lub qhov muag tau txais ib kab sib txawv.
Tshaj:
- Cov tsom iav uas tsis hnyav, pheej yig, thiab tsis siv roj teeb.
- Feem ntau xis dua rau kev siv mus sij hawm ntev.
Tsis Muaj:
- Hauv kev siv FPR, qhov kev daws teeb meem ntsug zoo rau ib lub qhov muag yuav raug txo qis (piv txwv li ntawm 1080p mus rau qhov sib npaug ntawm 540p ib lub qhov muag) vim yog kev sib cais kab.
- Qhov ntse thiab qhov ntxaws ntxaws yuav txo qis, tshwj xeeb tshaj yog thaum saib ze.
Kev Siv Tshuab Vaj Huam Sib Luag: LCD / LED vs Plasma vs OLED
Qhov kev vam meej ntawm 3D TV yog cuam tshuam los ntawm cov yam ntxwv ntawm lub vaj huam sib luag, tshwj xeeb tshaj yog cov lus teb pixel thiab lub peev xwm los tso saib cov thav duab ceev.
LCD / LED
LCD (nrog LED backlight) yog lub TV uas muaj zog tshaj plaws. Yog xav tau active 3D, LCD yuav tsum muaj cov hauv qab no:
- Lub sijhawm teb sai kom cov duab hloov pauv tsis tawm cov cim qhia (kev txav tsis meej) uas ua rau muaj kev sib txuas lus ntau ntxiv.
- Kev luam theej duab backlight lossis strobed backlight kom ua rau kom muaj kev txav mus los ntau dua thiab txo qhov xau ntawm cov duab.
Rau passive 3D, LCDs yog qhov zoo tagnrho vim tias daim ntawv thov ntawm cov yeeb yaj kiab polarizing yog qhov yooj yim. Txawm li cas los xij, qhov zoo ntawm 3D nyob ntawm qhov tseeb ntawm FPR zaj duab xis sib dhos thiab vaj huam sib luag sib xws.
Ntshav
Plasma tau muaj koob npe nrov rau nws cov lus teb sai thiab kev txav mus los du rau 3D nquag. Txawm li cas los xij, cov thev naus laus zis no siv hluav taws xob ntau dua, thiab ntau lub tuam txhab tsim khoom thaum kawg tau tso tseg nws.
OLED
Cov OLEDs muaj cov pixel teb sai heev, muaj qhov sib piv siab, thiab tsis tas yuav muaj backlight. Hauv kev xav, qhov no zoo heev rau active 3D vim nws txo cov crosstalk. Txawm li cas los xij, cov TV 3D OLED hauv tsev tsis tau dav dav vim tias cov qauv kev ua lag luam hloov mus rau 4K, HDR, thiab cov kev pabcuam streaming, es tsis yog 3D.
Cov Txheej Txheem Tsim Khoom thiab Ua Cov Ntsiab Lus hauv TV
Yuav kom 3D TV ua haujlwm tau, cov ntsiab lus 3D yuav tsum muab tso rau hauv hom ntawv tsim nyog. Qee hom ntawv feem ntau suav nrog:
- Kev Ntim Ncej: ob lub thav duab (sab laug thiab sab xis) tau ntim tag nrho, feem ntau siv rau ntawm Blu-ray 3D.
– Ib Sab (SBS): cov duab sab laug thiab sab xis raug teeb tsa ib sab rau hauv ib lub thav duab (txhua tus muaj nws qhov kev daws teeb meem raug nias).
– Sab Saum Toj thiab Hauv Qab (TAB): cov duab raug teeb tsa saum toj-hauv qab.
Cov TV 3D muaj lub processor video uas:
1. Nrhiav cov hom ntawv ntsiab lus.
2. Cais lossis txheeb xyuas cov ntaub ntawv mus rau sab laug thiab sab xis.
3. Ua kom cov zis sib dhos nrog lub kaw lus 3D (active lossis passive).
4. Ua kev hloov pauv ntawm kev txav mus los, kev ntsuas qhov loj me, thiab kev kho xim—feem ntau yuav tsum tau kho kom daim duab ci vim tias lub kaw lus 3D (tshwj xeeb tshaj yog cov tsom iav) txo qhov ci ntsa iab.
Kev Sib Tw Hauv Kev Tsim Khoom Siv TV 3D
Kev tsim lub TV 3D tsis yog tsuas yog hais txog kev ntxiv "hom 3D xwb." Muaj cov teeb meem loj heev uas cuam tshuam rau cov nqi tsim khoom thiab kev paub ntawm cov neeg siv:
1. Qhov kaj txo qis
Cov tsom iav 3D—ob qho tib si active thiab passive—txo qhov kaj uas ncav cuag lub qhov muag. Yog li ntawd, cov TV yuav tsum muaj peev xwm tsim kom muaj qhov kaj siab dua lossis ua kom lub backlight zoo dua kom tswj tau cov duab ci.
2. Kev Sib Tham/Kev Sib Dag
Thaum qhov kev sib cais ntawm daim duab sab laug thiab sab xis tsis zoo tag nrho, cov duab ntxoov ntxoo ob npaug yuav tshwm sim. Qhov no tuaj yeem tshwm sim los ntawm kev teb qeeb ntawm lub vaj huam sib luag, kev sib dhos tsis meej, lossis qhov zoo ntawm cov lim dej polarizing tsis zoo.
3. Kev nplij siab ntawm qhov muag thiab kev noj qab haus huv
Qhov sib txawv ntawm qhov kev tsom mus rau ib qho screen (lub qhov muag tsom mus rau ib qho screen 2D) thiab qhov sib sau ua ke (lub hlwb "coj" lub qhov muag mus rau qhov tob) tuaj yeem ua rau qaug zog. Cov chaw tsim khoom tsim cov chaw tswj qhov tob thiab cov kev pom zoo kom pom qhov deb.
4. Cov Qauv thiab kev sib haum xeeb
Qhov ntau hom ntawv 3D xav tau kev ywj pheej hauv cov khoom siv. Ntxiv mus, cov tsom iav nquag feem ntau tsis sib xws ntawm txhua hom vim muaj cov txheej txheem sib dhos sib txawv.
5. Cov nqi tsim khoom
Cov vaj huam sib luag uas muaj zog dua, cov yeeb yaj kiab polarizing uas raug, thiab cov processors video muaj zog dua ua rau cov nqi tsim khoom nce ntxiv. Thaum qhov kev thov ntawm kev ua lag luam poob qis, kev tsim khoom poob qis, ua rau nws nyuaj rau txo cov nqi.
Txheej Txheem Tsim Khoom: Los ntawm Vaj Huam Sib Luag mus rau 3D Calibration
Hauv kev xaus lus, kev tsim lub TV 3D muaj cov kauj ruam tseem ceeb hauv qab no:
1. Vaj huam sib luag thiab tus tsav tsheb tsim
Cov kws ua haujlwm teev tus nqi refresh, lub sijhawm teb, thiab lub circuitry tsav tsheb los tswj cov pixels thiab lub sijhawm thav duab. Yog tias 3D qhib, qhov yuav tsum tau muaj tus nqi refresh yog qhov tseem ceeb heev.
2. Kev koom ua ke ntawm cov txheej txheem kho qhov muag
Rau passive 3D FPR, daim zaj duab xis polarizing patterned raug siv nrog qhov tseeb siab kom phim cov kab polarization nrog cov kab pixel. Ib qho yuam kev me me tuaj yeem ua rau qhov zoo ntawm 3D poob qis.
3. Kev tswj hwm lub teeb ci ntsa iab thiab ci ntsa iab
Hauv LED-LCD, lub kaw lus backlight tau kho kom zoo (piv txwv li, qhov kev tsaus ntuj hauv zos lossis kev luam theej duab backlight) kom sib npaug qhov ci, qhov sib piv, thiab qhov ntse ntawm kev txav mus los.
4. 3D ua tiav firmware
Cov txheej txheem rau kev sib cais ntawm cov thav duab, kev sib dhos ua ke, kev kho gamma, thiab kev txo qis crosstalk tau tsim thiab sim. Qee lub tuam txhab tsim khoom siv kev them rov qab los ntawm "anti-ghosting" thav duab los txo cov teeb pom kev zoo.
5. Kev tswj xyuas zoo
Lub Hoobkas ua qhov kev sim:
- theem kev sib tham sib txuas lus,
- kev sib npaug ntawm polarization (passive),
- sync latency (active),
- xim thiab qhov kaj sib xws ntawm 2D thiab 3D hom.
Vim li cas 3D TVs thiaj ploj mus hauv kev lag luam?
Txawm hais tias thev naus laus zis zoo siab heev, muaj ntau yam ua rau 3D TV poob qis:
- Cov ntsiab lus 3D muaj tsawg thiab tsis sib xws hauv qhov zoo.
- Cov neeg siv yuav tsum hnav tsom iav, uas suav tias yog tsis yooj yim.
- Kev lag luam hloov pauv mus rau kev txhim kho "tam sim ntawd" xws li 4K, HDR, thiab cov ntxaij vab tshaus loj.
– Muaj ntau tus neeg siv khoom xav tias 3D zoo dua rau hauv xinesmas dua li chav nyob.
Kev kaw
Cov thev naus laus zis tom qab 3D TV yog kev sib xyaw ua ke ntawm cov khoom siv optics, cov khoom siv hluav taws xob vaj huam sib luag, thiab kev ua cov yeeb yaj kiab. Cov txheej txheem 3D nquag vam khom cov nqi refresh siab thiab kev sib dhos iav, thaum passive 3D vam khom polarization thiab optical coatings xws li FPR. Ob qho tib si ntsib cov teeb meem xws li kev poob qis ntawm qhov kaj, kev sib txuas lus, thiab kev nplij siab ntawm lub qhov muag. Txawm hais tias 3D TVs tsis yog qhov tseem ceeb hauv kev lag luam niaj hnub no, kev tshawb fawb thiab kev txhim kho uas tau tshwm sim thaum lub sijhawm 3D tau ua rau cov thev naus laus zis zaub zoo dua thiab tso lub hauv paus rau kev tsim kho tshiab uas txuas ntxiv vam meej niaj hnub no.
Yog tias koj xav tau, kuv tuaj yeem kho tsab xov xwm no kom meej meej rau 1000 lo lus (vim tias cov lus suav tuaj yeem sib txawv me ntsis nyob ntawm seb nws suav li cas), lossis nthuav dav ntu "txheej txheem tsim khoom" nrog cov ntsiab lus ntxiv xws li cov duab qhia txog kev tsim khoom thiab cov khoom tseem ceeb (T-Con, tsav tsheb IC, lub teeb ci ntsa iab, thiab cov kav dej ua yeeb yaj kiab).
