Yuav ua li cas yog lub refresh tus nqi

Nyob rau hauv lub sij hawm ntawm saib thiab TV poob lawm, tsim nyob rau hauv lub hauv paus ntawm ib tug CRT (cathode txoj sab ci raj), txhua tus neeg yuav tsum tau yam tsawg muaj ib tug general lub tswv yim dab tsi lub refresh tus nqi. Tshwj tsis yog tias, ntawm chav kawm, nws yog ib qho tseem ceeb rau nws khaws cia

tsis pom kev, xeem, mob taub hau thiab nrog tsis xis nyob thaum ua hauj lwm ntawm lub computer los yog saib TV cov kev pab cuam. Peb yuav hais tias qhov kev tshuaj ntsuam refresh tus nqi yog kov lwm yam kev rau kev kho mob. Niaj hnub no, qhov teeb meem no tau radically obrazomizmenilas. Nws yog tsim graphical ntaub ntawv zaub ntaus ntawv siv ib tug txawv kiag li tej ntsiab cai ntawm lub lag luam tshaj CRT technology. Txawm hais tias LCD screen thiab TV saib yog tsis yog li ntawd zoo meej, tham txog lub teb muaj kev ruaj ntseg: tej yam rau pom kev zoo yog significantly txo, tab sis tsis tau kiag li lawm.

Teb rau cov nqe lus nug ntawm yog dab tsi lub screen refresh tus nqi, nws yog ib qho yooj yim mus tswv ntawm computer saib. Yog hais tias koj siv lub qhov rais operating system qhov tseeb version, nws yog tsim nyog nyob rau hauv tej qhov chaw dawb rau lub desktop qhia txog ib tug zaub mov los ntawm txhaj rau txoj kev nas khawm, thiab nyob rau hauv daim ntawv uas zoo nkaus li, xaiv "Screen Resolution." Tom ntej no, npaj mus rau lub "Advanced tej chaw". Ntawm no, cov lus qhib tab "Saib", koj yuav saib tau lub kab "pilots ntawm qhov kev tshuaj ntsuam refresh."

Nyob rau hauv niaj hnub saib raws li nyob rau hauv cov kua muaju, feem ntau yog muaj nyob rau 59 thiab 60 Hz - nws yog rau cov uas tsis-kawg qauv; nyob rau hauv ntau kim tej zaum nws yuav tsum tau muab teem li 75 thiab 100 Hz. Kho kom tshiab tus nqi LCD screen - ib tug legacy ntawm lub era ntawm CRT. Cov kua siv lead ua qauv "los ntawm qhov muag" rau paub qhov txawv cov 60 thiab 100 Hz tsis yooj yim sua. Qhov tshaj plaws xwb uas tam sim no muaj feem xyuam rau qhov chaw - du zog ntawm tus nas cursor thiab muaj peev xwm siv 3D-tsom iav (100 Hz uas yuav tsum tau rau lawv).

Tab sis nyob rau hauv lub hnub ntawm lub CRT nws yog txawv. Lub puab nto ntawm qhov kev tshuaj ntsuam (raj) twb them nrog ib tug txheej ntawm tshwj xeeb khoom (phosphor) muaj peev xwm glow ob peb milliseconds tom qab nkag mus rau nws electrons. Peb electrodes (rab phom) los ntawm emission ntawm faib hais ntws uas nws cov lus tsa suab kho magnetic teb. Nws deflects lub rays los ntawm ib tug ncaj kab ua ntej pib ci Upper rau sab laug ces kaum ntawm lub screen, ces ntws ntxias luminescence nyob rau txoj kab mus

kaum sab sauv. Tom ntej no beam txav down ib leej thiab tag nrho rov qab. Thaum ncav lub hauv qab txoj cai ces kaum, nws tuaj rov qab mus rau thaum pib thiab txhua yam yog rov qab. Tus nab npawb ntawm xws cov ntxaij vab tshaus yog twv rau lub thib ob lub sij hawm thiab cov zoo li yog ib tug refresh tus nqi.

Lub LCD xws yuav xaiv hloov cov kis ntawm lub teeb los ntawm cov kua siv lead ua cov ntsiab ntawm cov matrix - yuav ib txhij zes thiab tua qhov screen. Flickering backlight nws tus kheej - qhov no yog qhov kawg shortcoming uas nquag tshem tawm nyob rau hauv lub tshiab qauv ntawm saib. Lub phosphor screen yog tseem lit, tsim lub illusion ntawm ib tug holistic daim duab. Ob lub qhov muag cia li tsis muaj lub sij hawm rau daim ntawv ceeb toom cov flicker tshwm sim los ntawm lub qhov muab kho dua ntawm cov dluab. Txawm li cas los, nws yog tam sim no, thiab hloov tshiab frequencies hauv qab no 75 Hz yog markedly peripheral tsis pom kev. Yuav kom tshem tawm no cov nyhuv manufacturers pom tias saib txawm nrog frequencies saum toj no 120 Hz. Ntawm cov hoob kawm, qhov no tswvyim yog yooj yim zog rau kev nkag siab - peb tsis xav txog qhov tsim ntawm cov xim thiab cov duab yog.