Muaj ntau lub koob yees duab hauv khw muaj cov koob yees duab siab txhais, cov koob yees duab txheem txhais,yog li ntawd wlub kaus mom yog qhov txawv ntawm SD thiab HD koob yees duab? Los ntawm kev daws teeb meem ntsug ntawm video thiab qhov sib txawv ntawm pixel, muaj qhov sib txawv ntawm pixel, thiab nws yog lub koob yees duab siab txhais ntawm 96W thiab siab dua
Kev Txhais Lus
HD Streaming yog dab tsi?
Lo lus HD txhais tau tias High Definition, thiab HD Streaming txhais tau tias HD zoo video streaming hla internet rau playback. Nws tuaj yeem ua tiav los ntawm ntau hom video sib txawv, suav nrog MPEG lossis smooth video streaming.
Cov ntsiab lus video streaming HD yuav muab qhov tseeb thiab meej dua rau koj dua li SD video resolution, feem ntau pom hauv YouTube thiab lwm lub vev xaib. Koj yuav pom pixelation tsawg dua hauv cov ntsiab lus video siab vim nws muaj ob npaug ntawm cov pixels ib thav duab (1920 × 1080) dua li cov yeeb yaj kiab txheem ntawm 1280 × 720. Cov duab zoo dua no kuj muaj kev tsim xim zoo dua thiab kev txav du dua vim lawv cov ncej nrawm dua.
Kev daws teeb meem ntsug ntawm video
1.SD yog hom ntawv video uas muaj qhov kev daws teeb meem hauv qab 720p (1280 * 720). 720p txhais tau tias qhov kev daws teeb meem ntsug ntawm cov yeeb yaj kiab yog 720 kab ntawm kev luam theej duab. Tshwj xeeb, nws hais txog "tus qauv txhais" cov hom ntawv video xws li VCD, DVD, thiab cov kev pab cuam TV nrog qhov kev daws teeb meem ntawm kwv yees li 400 kab, uas yog, tus qauv txhais.
2.Thaum qhov kev daws teeb meem ntawm lub cev ncav cuag 720p lossis siab dua, nws hu ua high-definition (lus Askiv High Definition) hu ua HD. Hais txog cov qauv high-definition, muaj ob qho kev lees paub thoob ntiaj teb: qhov kev daws teeb meem ntsug ntawm cov yeeb yaj kiab tshaj 720p lossis 1080p; qhov piv ntawm cov yeeb yaj kiab yog 16: 9.
Cov yeeb yaj kiab High Definition (HD) tsis yog ib yam tshiab hauv ntiaj teb ntawm cov khoom siv hluav taws xob uas muaj kev hloov pauv ntau ntawm Standard Definition (SD) mus rau HD uas pom tau zoo dua.
Hauv kev tshuaj xyuas kev lag luam, kev hloov pauv tau qeeb dua tab sis nws tseem yog qhov tsis zam. Txawm hais tias feem ntau ntawm cov txheej txheem tshuaj xyuas thiab cov koob yees duab tam sim no muaj nyob rau hauv kev ua lag luam tseem yog Standard Definition, cov kws tshaj lij kwv yees tias HD yuav yog cov thev naus laus zis tseem ceeb los ntawm xyoo 2020.
Cov duab xim yog ua los ntawm cov me me hu ua pixels, nrog rau qhov kev daws teeb meem hais txog tag nrho cov pixels hauv ib daim vis dis aus lossis ib daim duab. Lub ntsiab lus rau SD video pib ntawm 240p thiab xaus ntawm 480p, thaum 1080p kev daws teeb meem yog HD tag nrho (nrog rau txhua yam saum toj no suav tias yog Ultra-HD).
Cov ntaub ntawv txuas ntxiv:
Lub koob yees duab ua haujlwm li cas:
1. Lub koob yees duab no muaj cov lens, lens holder, capacitor, resistor, infrared filter (IP Filter), sensor (Sensor), circuit board, image processing chip DSP thiab reinforcement board thiab lwm yam khoom.
2. Muaj ob hom sensors, ib qho yog charge-coupled sensor (CCD) thiab lwm qhov yog metal oxide conductor sensor (CMOS); circuit boards feem ntau yog printed circuit boards (PCB) lossis flexible circuit boards (FPC).
3. Lub teeb pom kev nkag mus rau hauv lub koob yees duab los ntawm lub lens, thiab tom qab ntawd lim tawm lub teeb infrared hauv lub teeb nkag mus rau hauv lub lens los ntawm lub lim IR, thiab tom qab ntawd mus txog lub sensor (sensor), uas hloov cov teeb liab optical mus ua lub teeb liab hluav taws xob.
4. Los ntawm lub tshuab hloov pauv sab hauv analog / digital (ADC), lub teeb liab hluav taws xob raug hloov mus ua lub teeb liab digital, thiab tom qab ntawd xa mus rau lub tshuab ua duab DSP rau kev ua tiav, thiab hloov mus ua RGB, YUV thiab lwm hom ntawv rau cov zis.
Lub sijhawm tshaj tawm: Lub Peb Hlis-03-2023
