Bluetooth zoo li cas, Nws Yuav Ua Li Cas, Thiab Ua Haujlwm Li Cas
Bluetooth yog ib qho siv kab-sib txuas wireless -luv luv uas tso cai xws li cov xov tooj ntawm tes, cov computers, thiab cov tshuab hluav taws xob kom xa tawm cov ntaub ntawv los yog suab lus wirelessly li luv nrug. Lub hom phiaj ntawm Bluetooth yog hloov cov cables uas feem ntau sib txuas, thaum tseem ua kom cov kev sib txuas ntawm lawv muaj kev ruaj ntseg.
Lub npe hu ua "Bluetooth" yog los ntawm ib tus vajntxwv 10-xyoo pua hu ua Harald Bluetooth, uas tau hais kom sib sau ua ke, sib koom ua pawg hauv cheeb tsam. Ib yam li nws cov npe hu ua, Bluetooth technology coj los ua ke ntau yam khoom siv nyob hauv ntau qhov kev lag luam los ntawm kev sib txuas lus sib txuas.
Bluetooth tshuab
Tsim los ntawm 1994, Bluetooth twb npaj ua ib lub voj kev hloov tshiab rau cov cables. Nws siv tib 2.4GHz zaus tib yam li lwm lub wireless technologies nyob hauv tsev los chaw ua haujlwm, xws li cov xov tooj tsis muaj xov tooj thiab cov chaw nruab Hli. Nws tsim lub 10-meter (33-foot) radius wireless network, hu ua ib cheeb tsam network (PAN) los yog piconet, uas muaj peev xwm sib txuas nruab nrab ntawm ob thiab yim khoom. Qhov kev pab cuam luv luv no tso cai rau koj xa ib daim ntawv rau koj lub tshuab luam ntawv hauv lwm chav tsev, piv txwv li, tsis tas khiav ib kab kev ntsiag to.
Bluetooth siv tsawg zog thiab cov nqi tsawg dua li siv dua Wi-nkaus. Nws qis zog kuj ua rau nws tsis tshua muaj kev kub ntxhov los ntawm kev cuam tshuam nrog lwm cov khoom siv hauv tib lub 2.4GHz xov tooj cua band.
Bluetooth ntau thiab kev sib kis ceev tshaj yog feem tsawg dua Wi-nkaus (wireless network thaj tsam uas koj muaj nyob rau hauv koj lub tsev). Bluetooth v3.0 + HS-Bluetooth high-speed technology-devices yuav xa mus txog 24 Mbps ntawm cov ntaub ntawv, uas yog sai dua 802.11b WiFi tus qauv , tab sis qeeb dua wireless-ib lossis wireless-g qauv. Raws li lub tshuab tau hloov hlo, txawm li cas los, Bluetooth nce tau nce.
Lub Bluetooth 4.0 specification tau txais yuav lub xaj thaum Lub Xya Hli 6, 2010. Bluetooth 4.0 4.0 nta xws li qis zog noj, raug nqi tsawg, multivendor interoperability, thiab ntau yam ntxiv.
Qhov cuab kev siv cuab yeej cuab tam raws li Bluetooth 4.0 spec yog nws cov hwj huam qis dua; li siv Bluetooth v4.0 yog optimized rau cov lag luam uas tsis tshua muaj neeg lag luam thiab khiav tawm ntawm cov roj teeb me me, qhib cov sijhawm tshiab rau wireless technology. Tsis txhob ntshai tias tawm hauv Bluetooth ntawm yuav ntws koj lub xov tooj ntawm roj teeb, piv txwv li, koj tawm tau Bluetooth v4.0 txawb xov tooj txuas txhua lub sijhawm rau koj cov khoom siv Bluetooth.
Siv nrog Bluetooth
Muaj ntau lub xov tooj ntawm tes muaj Bluetooth xov tooj tso rau hauv lawv. Cov PCs thiab lwm cov khoom siv uas tsis muaj cov xov tooj hluav taws xob ua tau yog Bluetooth enabled los ntawm kev ntxiv ib lub dongle Bluetooth, piv txwv.
Tus txheej txheem ntawm txuas ob lub xov tooj Bluetooth yog hu ua "pairing." Feem ntau, cov cuab yeej tshaj tawm lawv lub presences rau ib leeg, thiab tus neeg siv tau xaiv lub Bluetooth ntaus lawv xav mus txuas rau thaum nws lub npe los yog tus ID tshwm rau hauv lawv lub iPad. Raws li Bluetooth enabled enabled proliferate, nws yog ib qho tseem ceeb uas koj paub thaum twg thiab rau qhov twg ntaus koj nyob nraum txuas, yog li tej zaum yuav muaj ib lub chaws nkag mus uas yuav pab kom koj nyob nraum txuas rau qhov tseeb ntaus ntawv.
Txoj kev sib tw no sib txawv raws li cov khoom siv txuam nrog. Piv txwv, txuas lub cuab yeej ntawm Bluetooth rau koj lub iPad tuaj yeem ua cov kauj ruam sib txawv los ntawm cov neeg khev Bluetooth ntaus ntawv rau koj lub tsheb .
Bluetooth Limitations
Muaj ib co downsides rau Bluetooth. Qhov thib ib yog tias nws yuav ua rau lub hwj chim ntawm lub roj teeb rau cov wireless wireless li Smartphones, tab sis raws li kev siv tshuab (thiab roj teeb technology) tau zoo lawm, qhov teeb meem no tseem ceeb tshaj qhov siv los ua.
Tsis tas li ntawd, qhov ntau yog tsis txwv, feem ntau yog ntev txog 30 feet, thiab nrog rau tag nrho cov wireless technologies, obstacles xws li phab ntsa, plag tsev, los yog ceilings yuav txo qhov no ntau ntxiv.
Txoj kev ua pairing kuj yuav tsis yooj yim, feem ntau nyob ntawm cov khoom pab cuam, cov khw, thiab lwm yam ua rau txhua tus tuaj yeem cuam tshuam thaum sim mus cuag.
Yuav ua li cas Secure Yog Bluetooth?
Bluetooth yog pom tias muaj kev ruaj ntseg ntawm kev ruaj ntseg wireless thaum siv nrog ceev faj. Kev sib txuas yog encrypted, tiv thaiv xws li eavesdropping los ntawm lwm yam khoom nyob ze. Bluetooth devices kuj hloov lub xov tooj cua frequencies feem ntau thaum uas khub, uas tiv thaiv ntxeem tau yooj yim.
Li no kuj muaj ntau hom chaw uas tso cai rau tus neeg siv yuav txo Bluetooth txuas. Kev ruaj ntseg-theem kev ruaj ntseg ntawm "trusting" Bluetooth cuab yeej txuas lus txuas rau tsuas yog ib qho ntaus ntawv. Nrog rau cov kev pabcuam txog kev ruaj ntseg, koj tuaj yeem txwv tsis pub cov kev ua ub no koj lub cuab yeej tso cai rau kev sib koom ua ke thaum nyob ntawm Bluetooth txuas.
Ib yam li cov tshuab fais fab, txawm li cas los xij, muaj qee qhov kev tiv thaiv kev ruaj ntseg. Hackers tau tsim ntau yam kev siab phem uas siv Bluetooth sib tham. Piv txwv li, "bluesnarfing" yog hais txog ib tug hacker tau txais kev tso cai nkag mus rau cov ntaub ntawv ntawm lub tshuab siv Bluetooth; "bluebugging" yog thaum tus neeg tua neeg siv koj lub xov tooj txawb thiab nws cov hauj lwm.
Rau nruab nrab tus neeg, Bluetooth tsis tuaj yeem muaj kev phom sij rau kev ruaj ntseg thaum siv nrog kev nyab xeeb nyob rau hauv hlwb (xws li, tsis txuas rau cov tsis paub txog Bluetooth). Rau kev ruaj ntseg ntau tshaj, thaum nyob hauv pej xeem thiab tsis siv Bluetooth, koj tuaj yeem lov tes taw nws.