Lub Koob Yees Duab Module Nrog H264 yog dab tsi?
Lub Koob Yees Duab Module Nrog H264 yog cov khoom siv sib xyaw ua ke uas sib txuas cov duab sensor, optical lens, teeb liab ua haujlwm, thiab tiag -time H264 encoding functionality. Nws qhov txiaj ntsig tseem ceeb nyob hauv kev tshem tawm qhov xav tau ntawm cov txheej txheem sab nraud, vim nws tuaj yeem ncaj qha hloov cov duab yeeb yaj kiab uas tau ntes los ntawm lub koob yees duab rau hauv compressed video ntws hauv H264 hom hauv lub sijhawm. Khaws cov yam ntxwv tseem ceeb ntawm H264 encoding-"cov duab zoo + tsis tshua muaj bandwidth / cov ntaub ntawv me me"- lub module ua tiav miniaturization thiab qis-kev siv hluav taws xob los ntawm kev sib koom ua ke kho vajtse, ua kom nrawm nrawm rau ntau yam khoom siv davhlau ya nyob twg. Nws yog siv dav hauv cov xwm txheej xws li lub koob yees duab saib xyuas kev ruaj ntseg, lub koob yees duab hauv tsev ntse, hauv - lub tsheb teeb pom kev zoo, lub koob yees duab tshuaj xyuas kev lag luam, thiab lub koob yees duab sab nraud rau cov khoom siv txawb, ua tau raws li cov kev xav tau ntawm cov cuab yeej siv rau kev ntes video, tiag - lub sijhawm compression, kev sib kis tau zoo, lossis chaw cia hauv zos.
H264, lub npe hu ua Advanced Video Coding (AVC), yog tus qauv video coding ua ke tsim los ntawm ITU-T Telecommunication Standardization Sector (ITU-T) thiab International Organization for Standardization/International Electrotechnical Commission (ISO/IEC). Txij li thaum nws tso tawm xyoo 2003, nws tau dhau los ua ib qho kev siv video coding thev naus laus zis thoob ntiaj teb. Nrog rau kev ua haujlwm zoo compression, nws tuaj yeem txo cov ntaub ntawv video loj los ntawm kwv yees li 50% hauv bandwidth piv rau cov qauv coding ua ntej thaum tuav cov duab zoo. Nws kuj khav theeb muaj zog sib raug zoo, txhawb nqa yuav luag txhua lub davhlau ya nyob twg thiab cov platforms los ntawm cov xov tooj ntawm tes, khoos phis tawj, thiab TVs rau cov khoom siv soj ntsuam thiab cov streaming servers. Nws tau siv dav hauv ntau qhov xwm txheej xws li kev tshaj tawm video nyob, online ntawm -xav tau kev pabcuam, kev saib xyuas kev nyab xeeb, Blu-ray discs, kev sib tham video, thiab tsim video luv luv. Txog rau hnub no, nws tseem yog ib qho ntawm cov kev daws teeb meem tseem ceeb rau kev tshaj tawm xov xwm kev sib kis thiab kev cia video hauv zos, cuam tshuam rau kev tshaj tawm thiab nrov ntawm cov yeeb yaj kiab digital.
Qhov sib txawv ntawm Lub Koob Yees Duab Module Nrog H264 thiab Ordinary Camera Module?
|
Yam |
Lub Koob Yees Duab Module Nrog H264 |
Ordinary Camera Module |
|
Tso zis teeb liab |
Ncaj qha outputs compressed H.264 video kwj. |
Outputs raw, uncompressed YUV/RGB los yog MJPEG cov ntaub ntawv. |
|
Processor Load |
Tsawg heev. Offloads hnyav encoding hauj lwm los ntawm lub ntsiab processor mus rau lub module nws tus kheej, freeing system kev pab cuam. |
Siab heev. Lub ntsiab processor (CPU / SoC) yuav tsum tswj tag nrho kev suav lub nra ntawm video encoding. |
|
Kev siv fais fab |
Tsawg zog tag nrho system. Vim muaj txiaj ntsig zoo kho vajtse thiab txo qis ntawm lub ntsiab processor. |
Siab zog tag nrho system. Lub ntsiab processor khiav ntawm siab load nrog encoding software, siv zog ntau dua. |
|
Bandwidth Requirement |
Tsawg heev. Lub compressed H.264 kwj yuav tsum tau tsawg kawg bandwidth rau kis tau tus mob. |
Siab heev. Cov ntaub ntawv nyoos video loj heev xav tau siab -kev sib tshuam ceev (xws li USB, MIPI). |
|
System Integration Complexity |
Tsawg, ze li "plug-thiab-play". Lub kaw lus tsuas yog yuav tsum tau txais thiab khaws / xa mus rau cov kwj encoded. |
Siab. Lub kaw lus yuav tsum muaj lub processor muaj zog thiab nyuaj software tsav tsheb / codecs los ua cov ntaub ntawv nyoos. |
|
Nqi |
Lub module nws tus kheej yog kim dua vim yog kev sib xyaw encoder nti, tab sis tuaj yeem txo qhov yuav tsum tau rau lub ntsiab processor, uas yuav txo tau tag nrho cov nqi system. |
Lub module nws tus kheej tsis tshua kim, tab sis yuav tsum muaj tus nqi kim, siab -kev ua tau zoo ntawm lub ntsiab processor thiab ntau lub cim xeeb, muaj peev xwm nce tag nrho cov nqi ntawm lub cev. |