Yini isithwebuli sebhakhodi ye-Bluetooth?

umgomo wokusebenza

Iskena sekhodi yebha eyisicaba evamile ngokuvamile sakhiwa umthombo wokukhanya, ilensi yokubona, imojuli yokuskena, isekethe yokuguqulela ye-analog-digital, kanye negobolondo lepulasitiki. Isebenzisa ama-elementi e-photoelectric ukuguqula isignali yokukhanya etholiwe ibe isignali kagesi, bese iguqula isignali kagesi ibe isignali yedijithali ngokusebenzisa isiguquli se-analog-digital bese siyidlulisela kukhompuyutha ukuze icutshungulwe. Lapho uskena isithombe, umthombo wokukhanya ukhanya esithombeni futhi ukukhanya okubonisiwe kudlula ilensi ukuze kuhlangane kumojula yokuskena. Imojula yokuskena iguqula isignali yokukhanya ibe isignali yedijithali ye-analogi (okungukuthi i-voltage, ehlobene nokuqina kokukhanya okutholiwe). Okuhlobene), futhi ngesikhathi esifanayo khomba izinga lobumnyama benombolo yesithombe. Ngalesi sikhathi, i-analog-digital conversion circuit iguqula i-analog voltage ibe isignali yedijithali futhi iyidlulisele kukhompyutha. Imibala ilinganiswa ngamabhithi angu-8, 10, kanye no-12 emibala emithathu ye-RGB, futhi isignali icutshungulwa ekukhishweni kwesithombe senani elishiwo ngenhla lamabhithi. Uma kunenombolo ephakeme yezingcezu ze-quantization, kusho ukuthi isithombe singaba namazinga acebile nokujula, kodwa ububanzi bombala budlule ikhono lokuqashelwa leso lomuntu, ngakho-ke kithi, inombolo ephezulu yokuskena ibhakhodi ingaphakathi kokuhlukaniseka. ububanzi Umthelela wesithwebuli ukuthi imibala ixhumeke kahle, futhi imininingwane eyengeziwe yesithombe iyabonakala.

Ubuchwepheshe be-Interface
Ziningi izinhlobo zezikena zebhakhodi. Imikhiqizo emisha yesithwebuli isivele inomsebenzi we-Bluetooth. Isithwebuli sebhakhodi singaxhunywa kumakhalekhukhwini osebenza nge-Bluetooth noma i-PDA, okwenza ukugcinwa kwedatha kube lula futhi ukudluliswa kwedatha kube lula.
Iskena sebhakhodi ye-Bluetooth sihlanganisa i-PDA noma iselula nesithwebuli sebhakhodi, okungagcini nje ngokuthuthukisa ukunethezeka nokusebenza kahle. yokusetshenziswa, kodwa futhi yonga izindleko futhi iyenze isetshenziswe kabanzi.
I-Bluetooth ubuchwepheshe bomsakazo obusekela ukuxhumana okude (ngokuvamile phakathi kwama-10m) wemishini. Ingakwazi ukushintshanisa ulwazi ngokungenantambo phakathi kwamadivayisi amaningi ahlanganisa omakhalekhukhwini, ama-PDA, amahedisethi angenawaya, amakhompyutha wamanothibhuki, nama-peripheral ahlobene. Ukusetshenziswa kobuchwepheshe be-"Bluetooth" kungenza kube lula ukuxhumana phakathi kwamadivaysi okugcina omakhalekhukhwini, futhi kwenze kube lula ukuxhumana phakathi kwedivayisi ne-inthanethi, ukuze ukudluliswa kwedatha kusheshe futhi kusebenze kahle, futhi kwandise indlela yokuxhumana okungenantambo. I-Bluetooth isebenzisa uhlaka lwenethiwekhi esabalalisiwe, ukugxuma-gxuma okusheshayo kanye nobuchwepheshe bephakethe elifushane, isekela ukuxhumana kwe-point-to-point kanye ne-point-to-multipoint, futhi isebenza ku-global 2.4GHz ISM (okungukuthi, izimboni, ezesayensi, kanye nebhendi yezokwelapha). Izinga layo ledatha ngu-1Mbps. Uhlelo lokudluliswa kwe-duplex lokuhlukanisa isikhathi lwamukelwa ukuze kutholakale ukudluliswa okugcwele kwe-duplex.
Ngakho-ke, izikena zekhodi yebha ezihlanganisa ubuchwepheshe be-Bluetooth zinokuphatheka okukhulu nokubumbana.