Yini kungcono: be-CCD noma CMOS? nenqubo yokukhethwa

Matrix - kuyisisekelo yisiphi isithombe noma ividiyo. Kuchaza ikhwalithi isinqumo yesithombe. Namuhla enkulu ekwakhekeni matrices esetshenziswa ezimbili ezihlukene zobuchwepheshe isimiso - be-CCD futhi CMOS. Isikhathi esining impela ungezwa umbuzo: "Bekungumuntu onjani-matrix ukhetha :? be-CCD noma CMOS» Phakathi abalandeli yesithombe futhi okokusebenza kwevidiyo ngayo kule ndaba yilena agumenti eshubile. Kulesi sihloko, sizohlola lezi zinhlobo ezimbili bese uzama ukuthola ukuthi okungcono-matrix - be-CCD noma CMOS.

ulwazi olujwayelekile

I-matrices zenzelwe wasithatha kwemigomo imisebe yokukhanya phezu. Ithi akuyona inzuzo ecacile omunye ubuchwepheshe kungenzeka. Ungenza ukuqhathanisa ku imingcele ethize futhi ukukhomba umholi esicini noma enye. Ngokuphathelene izintandokazi yabasebenzisi, ngokuvamile kuba umbandela zabo eziyinhloko intengo umkhiqizo, ngisho noma kuyoba eliphansi in izinga noma ezibekiweko esincintisana yayo.

Ngakho, ake sibone ukuthi kukhona izinhlobo ezimbili amadivaysi. Be-CCD--matrix - chip, okuyinto yakhiwa photodiodes ukukhanya-sensitive; wadala okusekelwe silicon. I engavamile yomsebenzi wakhe itholakala Umgomo we operation idivayisi icala-oluhambisana. CMOS--matrix - idivaysi kusekelwe Semiconductor ensimini umphumela transistors nokuba esangweni ukushisa namakhaza kuziteshi of conductivity ezahlukene.

Umgomo we operation

Ake sibheke ukuhlonza umehluko ukuthi kuzosiza ngikhethe: okuyinto engcono - a CMOS-matrix noma be-CCD? Umehluko omkhulu phakathi lobu buchwepheshe ababili ukuthi kusebenza kanjani. Be-CCD-iyunithi kwenkokhiso kusuka pixels aguqulwa ibe ezingaba kagesi okuyinto iyakhula angaphezu izinzwa photosensitive. Umphumela isithombe esinjengomuntu analog. Ngemva kwalokho ibhadalele omhlaba wonke umfanekiso ADC. Okungukuthi, idivayisi liqukethe izingxenye ezimbili - matrix ngqo futhi Converter. CMOS-ubuchwepheshe ungachazwa ukuthi ibhadalele ukhiqiza kwe-pixel ngayinye. Okuphuma isivele ngomumo isithombe sedijithali. Okungukuthi, kagesi aqoqana matrix pixel le epholisayo, ngawo bezikhali kagesi iyasuswa. It is adluliselwa ku-analog amplifier (esishunyekiwe ngokuqondile kwe-pixel), khona-ke nohlelo lwezinombolo olubizwa ngo Converter.

Yini ukukhetha: be-CCD noma CMOS?

Omunye nemingcele ezibalulekile sithole choice phakathi kwalezi amasu inombolo yokukhulisa umsindo-matrix. CMOS-amadivayisi abe inomboro ekulu amadivayisi (at iphuzu ngalinye), ukuze isignali sihamba kancane encishisiwe ikhwalithi yesithombe. Ngakho-ke, i-be-CCD--matrix asetshenziselwa ukwakha izithombe ngezinga eliphezulu le mininingwane, isibonelo, wezokwelapha, ucwaningo kanye nezinjongo ezimbonini. Kodwa CMOS-ubuchwepheshe isetshenziswa ngokuyinhloko ekhaya Imishini: amakhamera web, Smartphones, amaphilisi, ama-laptops, nokunye ..

Umngcele we olandelayo yilona olubonisa ukuthi uhlobo olunjani kangcono - be-CCD noma CMOS, - iyona kwabantu photodiodes. Ayanda njengoba linjalo, njengeliyiZwi izinhlayiyana eziningi zokukhanya ezimbalwa "walahlekelwa ngeze," ngokulandelana, isithombe kuyoba ngcono. Kulo mongo, be-CCD--matrix ukundlula izimbangi zayo, njengoba inikeza isakhiwo akanayo izikhala ezinjalo, kuyilapho ngesikhathi CMOS samanje (bahlela transistors).

Nokho, lapho phambi umsebenzisi kutholwa ithuba: Yikuphi uhlobo-matrix - the CMOS noma be-CCD - ukuthenga pops up ipharamitha main - intengo zedivayisi. Be-CCD-ubuchwepheshe kakhulu eqolo ngaphezu kwanoma esincintisana yayo, nokusetshenziswa kwamandla. Ngakho-ke, kuze sungula them lapho izinga isilinganiso isithombe kwanele, akulungile.