Bluetooth yog qhov kev sib txuas lus luv luv wireless uas tso cai rau cov khoom siv xws li xov tooj ntawm tes, khoos phis tawj, thiab cov khoom siv los xa cov ntaub ntawv lossis lub suab wirelessly hla qhov deb. Lub hom phiaj ntawm Bluetooth yog los hloov cov cables uas ib txwm txuas cov khoom siv, thaum tseem ua kom cov kev sib txuas lus ntawm lawv ruaj ntseg.
Lub npe "Bluetooth" yog muab los ntawm 10-xyoo pua Danish huab tais hu ua Harald Bluetooth, uas tau hais kom sib sau ua ke sib txawv, sib ntaus sib tua hauv cheeb tsam. Zoo li nws lub npe, Bluetooth thev naus laus zis coj los ua ke ntau yam khoom siv thoob plaws ntau qhov kev lag luam sib txawv los ntawm kev sib koom ua ke tus qauv.
Bluetooth Technology
Tsim tawm xyoo 1994, Bluetooth tau npaj los hloov wireless rau cables. Nws siv tib yam 2.4GHz zaus ib yam li lwm yam wireless technologies hauv tsev lossis chaw ua haujlwm, xws li cov xov tooj tsis muaj zog thiab WiFi routers. Nws tsim 10-meter (33-ko taw) lub vojvoog wireless network, hu ua tus kheej cheeb tsam network (PAN) lossis piconet, uas tuaj yeem sib txuas ntawm ob thiab yim yam khoom siv. Qhov kev sib txuas luv luv no tso cai rau koj xa ib nplooj ntawv mus rau koj lub tshuab luam ntawv hauv lwm chav, piv txwv li, tsis tas yuav khiav ib qho tsis zoo.
Bluetooth siv tsawg zog thiab nqi tsawg dua los siv dua Wi-Fi. Nws lub zog qis kuj ua rau nws tsis tshua muaj kev txom nyem los ntawm kev cuam tshuam nrog lwm cov khoom siv wireless hauv tib lub xov tooj cua 2.4GHz.
Bluetooth ntau yam thiab kev sib kis ceev feem ntau qis dua Wi-Fi (lub wireless hauv cheeb tsam network uas koj yuav muaj hauv koj lub tsev). Bluetooth v3.0 + HS - Bluetooth high-ceev thev naus laus zis - cov khoom siv tuaj yeem xa mus txog 24 Mbps ntawm cov ntaub ntawv, uas nrawm dua li 802.11b WiFi tus qauv, tab sis qeeb dua wireless-a lossis wireless-g qauv. Raws li thev naus laus zis tau hloov zuj zus, txawm li cas los xij, Bluetooth nrawm tau nce.
Lub Bluetooth 4.0 specification tau raug lees paub thaum Lub Xya Hli 6, 2010. Bluetooth version 4.0 nta suav nrog kev siv hluav taws xob tsawg, tus nqi qis, ntau tus neeg muag khoom sib cuam tshuam, thiab txhim kho ntau yam.
Lub ntsiab lus tseem ceeb txhim kho rau Bluetooth 4.0 spec yog nws lub zog qis dua; cov cuab yeej siv Bluetooth v4.0 tau ua kom zoo rau kev ua haujlwm roj teeb tsawg thiab tuaj yeem khiav tawm ntawm cov roj teeb me me, qhib lub sijhawm tshiab rau wireless technology. Es tsis txhob ntshai tias tawm hauv Bluetooth yuav tso koj lub xov tooj ntawm tes roj teeb, piv txwv li, koj tuaj yeem tso lub xov tooj ntawm tes Bluetooth v4.0 txuas txhua lub sijhawm rau koj lwm yam khoom siv Bluetooth.
Txuas Nrog Bluetooth
Ntau lub xov tooj ntawm tes muaj xov tooj cua Bluetooth hauv lawv. PCs thiab lwm yam khoom siv uas tsis muaj xov tooj cua built-in tuaj yeem ua tau Bluetooth-enabled los ntawm kev ntxiv Bluetooth dongle, piv txwv li.
txheej txheem ntawm kev txuas ob lub Bluetooth li hu ua "pairing." Feem ntau, cov khoom siv tshaj tawm lawv qhov muaj nyob rau ib leeg, thiab cov neeg siv xaiv lub cuab yeej Bluetooth lawv xav txuas mus rau thaum nws lub npe lossis ID tshwm rau ntawm lawv lub cuab yeej. Raws li Bluetooth-enabled li proliferate, nws yog ib qho tseem ceeb uas koj yuav tsum paub thaum twg thiab cov cuab yeej twg koj nyob nraum txuas, yog li tej zaum yuav muaj ib tug code rau nkag mus uas yuav pab kom paub tseeb tias koj nyob nraum txuas mus rau qhov tseeb ntaus ntawv.
txheej txheem kev ua khub no tuaj yeem sib txawv nyob ntawm cov khoom siv. Piv txwv li, txuas lub cuab yeej Bluetooth rau koj lub iPad tuaj yeem koom nrog cov kauj ruam sib txawv los ntawm cov no los ua khub Bluetooth ntaus ntawv rau koj lub tsheb.
Bluetooth Limitations
Muaj qee qhov downsides rau Bluetooth. Thawj qhov yog tias nws tuaj yeem ua rau lub zog ntawm lub roj teeb rau lub xov tooj ntawm tes wireless xws li smartphones, txawm tias raws li cov cuab yeej siv (thiab roj teeb thev naus laus zis) tau txhim kho, qhov teeb meem no tseem ceeb dua li nws tau siv los ua.
Tsis tas li, qhov ntau yam txwv tsis pub, feem ntau txuas ntxiv tsuas yog 30 ko taw, thiab nrog rau tag nrho cov thev naus laus zis wireless, cov teeb meem xws li phab ntsa, pem teb, lossis qab nthab tuaj yeem txo qhov ntau ntxiv.
Cov txheej txheem ua khub kuj tseem yuav nyuaj, feem ntau nyob ntawm cov khoom siv koom nrog, cov tuam txhab tsim khoom, thiab lwm yam uas txhua tus tuaj yeem ua rau muaj kev ntxhov siab thaum sim txuas.
Bluetooth ruaj ntseg li cas?
Bluetooth yog suav tias yog ib qho kev ruaj ntseg wireless technology thaum siv nrog ceev faj. Kev sib txuas yog encrypted, tiv thaiv xws li eavesdropping los ntawm lwm yam khoom siv nyob ze. Bluetooth pab kiag li lawm kuj hloov lub xov tooj cua zaus feem ntau thaum ua khub, uas tiv thaiv ib qho yooj yim ntxeem tau.
Devices kuj muaj ntau yam kev teeb tsa uas tso cai rau tus neeg siv txwv kev sib txuas Bluetooth. Cov cuab yeej-theem kev ruaj ntseg ntawm "kev ntseeg siab" ib lub cuab yeej Bluetooth txwv kev sib txuas rau cov cuab yeej tshwj xeeb ntawd. Nrog rau cov kev pab cuam-theem kev ruaj ntseg teeb tsa, koj tuaj yeem txwv hom kev ua ub no uas koj lub cuab yeej tso cai rau koom nrog thaum muaj kev sib txuas ntawm Bluetooth.
Raws li nrog rau cov cuab yeej siv wireless, txawm li cas los xij, ib txwm muaj qee qhov kev pheej hmoo kev nyab xeeb cuam tshuam. Hackers tau tsim ntau yam kev phem tawm tsam uas siv Bluetooth sib txuas. Piv txwv li, "bluesnarfing" yog hais txog tus neeg nyiag nkas tau txais kev tso cai nkag mus rau cov ntaub ntawv ntawm lub cuab yeej los ntawm Bluetooth; "bluebugging" yog thaum tus neeg tawm tsam yuav hla koj lub xov tooj ntawm tes thiab tag nrho nws cov haujlwm.
Rau tus neeg nruab nrab, Bluetooth tsis qhia txog kev pheej hmoo kev nyab xeeb loj heev thaum siv nrog kev nyab xeeb hauv siab (piv txwv li, tsis txuas mus rau Bluetooth yam tsis paub). Rau kev ruaj ntseg siab tshaj plaws, thaum nyob hauv pej xeem thiab tsis siv Bluetooth, koj tuaj yeem lov tes taw nws kiag li.
FAQ
Bluetooth 5.0 yog dab tsi?
Bluetooth 5.0 yog qhov tshiab tshaj plaws ntawm tus qauv wireless. Cov khoom siv tau pib txhawb Bluetooth hauv nruab nrab xyoo 2017, thiab tam sim no tau siv ntau yam khoom siv Bluetooth sib xws. Bluetooth 5.0 muaj plaub npaug ntawm qhov ntau, ob zaug qhov nrawm, thiab txhim kho bandwidth dhau Bluetooth 4.0.
Bluetooth tethering yog dab tsi?
Bluetooth tethering yog thaum Bluetooth ua ke ob lub khoom siv hauv tib lub Chaw Sib Txuas Tus Kheej (PAN), thiab kev sib txuas hauv Is Taws Nem ntawm ib lub cuab yeej tuaj yeem koom nrog lub cuab yeej thib ob.
Bluetooth hais lus yog dab tsi?
Bluetooth powers ntse hais lus xws li Amazon Echo thiab Google Tsev cov khoom siv thiab wireless portable speaker tsim rau sab hauv tsev, sab nraum zoov, thiab puam siv.
