Xaiv ib tug tuner rau TV

Ua ntej, peb txhais tau cov yam tuner. Nyob rau hauv thiaj li yuav pab kom koj mus saib TV, koj lub TV tuner yog yuav tsum tau. Qhov no yog ib tug ntaus ntawv uas tau txais ib tug xov tooj cua teeb liab, ces converts mus ib daim duab. Tsis tas li ntawd, lub TV tuner rau ntau yog yuav tsum tau mus txiav suab ntawm lub teeb liab, kev ua yuam kev kho, thiab nyob rau hauv tej rooj plaub, thiab reformat.

Tuners raug muab faib mus rau hauv ob hom: cov thiab analog. Analog tuner tau txais ib txwm tshaj tawm hauv xov lub teeb liab, nyob qhov twg cov duab zoo yog tsis yeej ib txwm zoo, muaj ib cov tuner on qhov tsis tooj - qhov zoo tshaj plaws daim duab zoo. Koj yuav saib tau txawm lub me tshaj cov ntsiab lus tsis muaj distortion.

Tsis tas li ntawd ua, ib tug sab nraud TV tuner rau TV muaj ib tug xov tooj ntawm zoo. Piv txwv li, koj muaj ib tug TV thiab ib lub computer, thiab koj tsis xav hais tias lawv yuav tsum tau ua ke. Qhov ntawd yog mus saib movies nyob rau hauv Internet nyob rau hauv real-time kev lom zem kev pab cuam, thiab lwm yam nyob rau hauv TV. Yuav ua li cas yuav tsum tau ua kom tau ib tug heev haumxeeb ntaus ntawv uas yuav tshaj lub tsis feem ntau niaj hnub TV? Txuas koj lub computer mus rau ib tug sab nraud tuner, ces ib tug tshwj xeeb cable los ntawm lub TV.

Kuv xav tias koj to taub dab tsi lub tv tuner, thiab yuav ua li cas nws ua hauj lwm.

Tam sim no wb tham txog ntau cov kev tuners, ua ntej ntawm analog. Tej tuners tau txais ib lub teeb liab los ntawm lub pej thuam thiab ces hloov nws. Qhov menyuam TV hom npawg thiab SECAM, koj yuav qhia lub scale ntawm daim duab. Koj yuav tau saib thiab cov ntaub ntawv video ntawm ib saab tswv yim S-VIDEO.

Cov TV tuner tej zaum yuav muaj ob peb hom. Nyob rau hauv Feem ntau, lawv cov dej num los ntawm hom tshuaj ntsuam kev daws teeb meem. Qhov no HDTV, SDTV thiab EDTV. Tuners SDTV thiab EDTV tsis tau yuav tsis muab suav hais tias raws li cov TV, peb tsis ua li, tab sis nyob rau ib qho HDTV yuav tsum ua kom pom tseeb.

Tam sim no qhov txhia chaw ntau cable TV. Muaj ntau cov kev pab cuam, los mus rau ib tug puas raws, cov duab no yog zoo, yog hais tias tsis zoo heev. Thiab tag nrho vim hais txog dab tsi? Nws yog qhov yooj yim. HDTV tuners yog tsim tsis tsuas yog rau kev HD-teeb liab txais tos antennas tsev neeg nyob rau hauv cable TV, lawv pab raws li ib tug cia ntaus ntawv, los yog receiver.

Yog hais tias koj xav mus saib tsuas yog tus cable los yog satellite TV, koj yuav tuner rau lub TV yuav tsis muaj. Lub fact tias yuav luag tag nrho cov peripheral cov khoom muaj ib tug built-in tuner.

Nyob rau hauv lub ntiaj teb no muaj ob peb cov qauv rau cov broadcasting. Yog li ntawd, TV, yuav nyob rau hauv lwm lub teb chaws, xws li teb chaws Nyiv Pooj, Russia yuav tsis ua hauj lwm zoo. broadcasting hom tsis haum nyob rau hauv nrog cov nyob sab Europe ib. Qhov ntawd yog rau qhov no thiab yuav tau ib lub tuner rau koj lub TV. Raws li hais saum toj no, ib tug sab nraud TV tuner rau TV yog tsim thaum lub sij hawm. Tsis muaj dab tsi xav tau kev pab rau lauj, lo, cia li ntsaws rau hauv thiab xaiv cov TV txheem.

Nyob rau hauv peb lub teb chaws, tsis txhua leej txhua tus muaj ib tug niaj hnub TV. Kuj muaj ntau tus neeg uas tsis muaj nyiaj mus yuav nws. Yog li ntawd, qhov teeb meem ntawm TV tuners tseem yuav tau txais ib tug analog teeb liab system NPAWG (European standard), SECAM (lub Fabkis thiab Soviet broadcasting), NTSC (America thiab Nyiv).

Tam sim no, hybrid tuners yog muaj nyob rau hauv Russia, muaj lub sij hawm los mus ua kom ob leeg analog thiab cov teeb liab. Ib tug purely analog, xws li, los ntawm cov ntau lawm zoo.

Qhov txawv ntawm cov analog tawm qauv - yog lub screen daws teeb meem thiab ncej nqi. Cov TV yog feem ntau encodes ib co ntawm cov raws, yog li ib co tuners tau ua-nyob rau hauv decoder rau seev suab. Qhov no siv rau them raws.

Lub loj muag mas tam sim no tuner rau TV tsis muaj ntxiv kev xaiv, vim li ntawd nws yog pab tau saib xwb free raws. By thiab loj, cov raws 60, yog li tuners nrog lub decoder tsis yuav dab tsi.