Lub teeb xiav yog nyob rau, koj txuas nrog cov khawv koob ntawm bluetooth! Tab sis nws ua haujlwm li cas?
Bluetooth yog ib wireless Cov txheej txheem thev naus laus zis uas tso cai rau cov cuab yeej sib txuas lus hauv qhov luv luv (UHF xov tooj cua hauv ISM band los ntawm 2.4 txog 2.485 GHz) tsim tus kheej cheeb tsam network (PAN). Nws tau dav siv rau cov khoom siv txawb xws li headsets thiab hais lus, muab kev sib txuas lus thiab paub ntau yam kev siv.
Cia peb saib keeb kwm thiab thev naus laus zis tom qab tus qauv wireless zoo kawg no.
Nkag siab txog Bluetooth Technology
Dab tsi yog Bluetooth?
Bluetooth yog tus qauv thev naus laus zis wireless uas tso cai rau cov cuab yeej sib txuas lus nrog ib leeg dhau qhov luv, tsim kom muaj tus kheej hauv cheeb tsam network (PAN). Nws yog dav siv rau kev sib pauv cov ntaub ntawv ntawm kev ruaj khov thiab cov khoom siv mobile, muab lawv lub peev xwm los sib txuas lus thiab paub txog ntau yam kev siv. Bluetooth thev naus laus zis siv xov tooj cua nthwv dej hauv lub zaus band ntawm 2.4 GHz, uas yog txwv tsis pub muaj ntau zaus tshwj tseg rau kev lag luam, kev tshawb fawb, thiab kev kho mob (ISM).
Bluetooth ua haujlwm li cas?
Bluetooth thev naus laus zis suav nrog xa thiab txais cov ntaub ntawv wirelessly ntawm cov khoom siv siv xov tooj cua nthwv dej. Cov thev naus laus zis siv cov ntaub ntawv tsis tu ncua, uas tau xa mus tsis pom los ntawm huab cua. Qhov ntau yam rau Bluetooth li yog nyob ib ncig ntawm 30 ko taw, tab sis nws tuaj yeem sib txawv nyob ntawm lub cuab yeej thiab ib puag ncig.
Thaum ob lub Bluetooth-enabled pab kiag li lawm tuaj nyob rau hauv ntau yam ntawm ib leeg, lawv paub thiab xaiv ib leeg, ib tug txheej txheem hu ua khub. Thaum ua khub, cov khoom siv tuaj yeem sib txuas lus nrog txhua tus wirelessly.
Cov txiaj ntsig ntawm Bluetooth yog dab tsi?
Bluetooth technology muaj ntau yam txiaj ntsig, suav nrog:
- Kev yooj yim: Bluetooth thev naus laus zis yog qhov yooj yim siv thiab ua rau cov khoom siv sib txuas lus nrog ib leeg yam tsis muaj xov hlau lossis cables.
- Portability: Bluetooth technology yog tsim los rau kev sib txuas lus wirelessly ntawm portable li, ua rau nws zoo tagnrho rau siv thaum mus ncig.
- Kev nyab xeeb: Bluetooth thev naus laus zis ua rau cov neeg tsav tsheb tham ntawm lawv lub xov tooj ntawm tes tsis pub siv tes, ua kom muaj kev nyab xeeb dua rau kev tsav tsheb.
- Yooj Yim: Bluetooth thev naus laus zis tso cai rau cov neeg siv rub tawm cov duab los ntawm lawv lub koob yees duab digital lossis txuas tus nas rau lawv cov ntsiav tshuaj yam tsis muaj xov hlau lossis cables.
- Kev sib txuas ib txhij: Bluetooth thev naus laus zis ua rau ntau yam khoom siv los txuas rau ib leeg, ua rau nws tuaj yeem mloog suab paj nruag ntawm lub mloog pob ntseg thaum tseem siv cov keyboard thiab nas.
etymology
Lub Anglicised Version ntawm Scandinavian Qub Norse Epithet
Lo lus "Bluetooth" yog ib qho anglicised version ntawm Scandinavian Old Norse epithet "Blátǫnn," uas txhais tau hais tias "blue-toothed." Lub npe raug xaiv los ntawm Jim Kardach, yav dhau los Intel engineer uas ua haujlwm ntawm kev txhim kho Bluetooth technology. Kardach tau xaiv lub npe los qhia tias Bluetooth thev naus laus zis zoo ib yam sib koom ua ke cov khoom siv sib txawv, ib yam li King Harald koom ua ke Danish pab pawg neeg rau hauv ib lub nceeg vaj hauv lub xyoo pua 10th.
Los ntawm Insane Homespun tswv yim mus rau ib qho kev siv
Lub npe "Bluetooth" tsis yog qhov tshwm sim ntawm kev hloov pauv ntawm lub ntuj, tab sis yog qhov tshwm sim ntawm qhov tshwm sim uas ua rau tsim lub hom lag luam. Raws li Kardach, hauv kev xam phaj, nws tab tom saib keeb kwm Channel documentary txog Harald Bluetooth thaum nws tau los nrog lub tswv yim los muab lub npe thev naus laus zis tom qab nws. Lub npe tau pib thaum lub sijhawm URLs luv luv, thiab tus tsim Robert Robert tau lees tias "Bluetooth" tsuas yog qhov zoo.
Los ntawm Googol rau Bluetooth: Tsis Muaj Lub Npe Zoo
Tus tsim ntawm Bluetooth pib qhia lub npe "PAN" (Tus Kheej Thaj Chaw Networking), tab sis nws tsis muaj ib lub nplhaib. Lawv kuj suav hais tias yog lo lus lej "googol," uas yog tus lej thib ib ua raws li 100 xoom, tab sis nws tau suav tias loj heev thiab tsis xav txog. Tam sim no CEO ntawm Bluetooth SIG, Mark Powell, txiav txim siab tias "Bluetooth" yog lub npe zoo tshaj plaws vim tias nws tau cuam tshuam qhov kev ntsuas loj heev thiab muaj peev xwm sib txuas ntawm tus kheej ntawm thev naus laus zis.
Qhov Kev Tsis Txaus Siab Ua Tsis Txaus Siab
Lub npe "Bluetooth" yuav luag sau "Bluetoo" vim qhov tsis muaj URLs, tab sis cov ntawv sau tau hloov mus rau "Bluetooth" los muab kev sau ntau dua. Qhov kev sau ntawv kuj yog ib qho zoo rau tus huab tais Danish lub npe, Harald Blåtand, uas nws lub xeem txhais tau tias "xiav hniav." Qhov kev sau tsis raug yog qhov tshwm sim ntawm kev paub lus Askiv uas tua neeg lub npe qub thiab ua rau lub npe tshiab uas ntxim nyiam thiab nco tau yooj yim. Yog li ntawd, qhov yuam kev yuam kev tau dhau los ua lub npe hu ua thev naus laus zis.
Keeb kwm ntawm Bluetooth
Lub Quest rau Kev Sib Txuas Wireless
Keeb kwm ntawm Bluetooth hnub rov qab ntau txhiab xyoo, tab sis qhov kev tshawb nrhiav rau kev sib txuas wireless tau pib thaum xyoo 1990s. Xyoo 1994, Ericsson, lub tuam txhab kev sib txuas lus hauv Swedish, tau pib ua ib txoj haujlwm ua haujlwm nrog lub hom phiaj ntawm kev qhia lub wireless module rau Personal Base Station (PBA). Raws li Johan Ullman, CTO ntawm Ericsson Mobile hauv Sweden thaum lub sijhawm, txoj haujlwm tau hu ua "Bluetooth" tom qab Harald Gormsson, tus huab tais tuag ntawm Denmark thiab Norway uas paub txog nws lub peev xwm los koom ua ke tib neeg.
Yug ntawm Bluetooth
Xyoo 1996, ib tug neeg Dutchman hu ua Jaap Haartsen, uas ua haujlwm rau Ericsson thaum lub sijhawm, tau raug xaiv los ua ib pab neeg ua haujlwm los kawm txog qhov ua tau ntawm kev sib txuas wireless. Pab neeg no xaus lus tias nws muaj peev xwm ua tiav cov ntaub ntawv txaus txaus nrog kev siv hluav taws xob txaus rau lub xov tooj ntawm tes. Cov kauj ruam tseem ceeb yog ua kom tiav tib yam rau phau ntawv sau thiab xov tooj hauv lawv cov kev lag luam.
Xyoo 1998, kev lag luam tau qhib kom tso cai rau kev sib koom tes siab tshaj plaws thiab kev sib koom ua ke ntawm cov khoom tsim, thiab Ericsson, IBM, Intel, Nokia, thiab Toshiba tau los ua tus kos npe rau Bluetooth Special Interest Group (SIG), nrog rau tag nrho ntawm 5 patents qhia.
Bluetooth hnub no
Niaj hnub no, Bluetooth thev naus laus zis tau txhawb nqa kev lag luam wireless rau pem hauv ntej, nrog lub zog los txuas cov khoom siv seamlessly thiab wirelessly. Kev siv hluav taws xob siab tshaj plaws yog tsawg, ua rau nws siv tau rau ntau yam khoom siv. Kev koom tes ntawm Bluetooth thev naus laus zis rau hauv phau ntawv sau thiab xov tooj tau qhib kev lag luam tshiab, thiab kev lag luam txuas ntxiv tso cai rau kev sib koom tes siab tshaj plaws thiab kev koom ua ke ntawm kev tsim khoom.
Raws li xyoo 2021, muaj ntau dua 30,000 patents ntsig txog Bluetooth thev naus laus zis, thiab Bluetooth SIG txuas ntxiv kho thiab hloov kho cov thev naus laus zis kom ua tau raws li cov kev xav tau ntawm cov neeg siv khoom siv hluav taws xob ua lag luam.
Kev sib txuas ntawm Bluetooth: Ruaj ntseg lossis tsis?
Bluetooth kev ruaj ntseg: Qhov zoo thiab qhov tsis zoo
Bluetooth thev naus laus zis tau hloov pauv txoj hauv kev uas peb txuas peb cov khoom siv. Nws ua rau peb sib pauv cov ntaub ntawv wirelessly, tsis tas yuav tsum muaj cov cables lossis kev sib txuas ncaj qha. Qhov kev tsim kho no tau ua rau peb cov haujlwm niaj hnub no yooj yim heev, tab sis nws kuj tuaj nrog qhov txaus ntshai - qhov txaus ntshai ntawm cov neeg ua phem cuam tshuam peb cov teeb liab Bluetooth.
Koj tuaj yeem ua dab tsi nrog Bluetooth?
Txuas Devices Wirelessly
Bluetooth thev naus laus zis tso cai rau koj los txuas cov khoom siv sib txawv wirelessly, tshem tawm qhov xav tau ntawm cov cables thiab hlua. Qhov no txhais tau tias koj tuaj yeem muaj kev sib txuas ntau dua thiab yooj yim ntawm kev sib txuas cov khoom siv. Qee cov khoom siv uas tuaj yeem txuas nrog ntawm Bluetooth suav nrog:
- smartphones
- computers
- Cov ntawv luam
- Nas
- Twj remote controls
- headphones
- hais lus
- Cov koob yees duab
Hloov Ntaub Ntawv
Bluetooth thev naus laus zis tseem tso cai rau koj hloov cov ntaub ntawv wirelessly ntawm cov khoom siv. Qhov no txhais tau tias koj tuaj yeem faib cov ntaub ntawv, duab, thiab lwm yam ntaub ntawv sai thiab yooj yim yam tsis tas yuav siv cables lossis kev sib txuas hauv internet. Qee txoj hauv kev uas koj tuaj yeem siv Bluetooth rau kev hloov ntaub ntawv suav nrog:
- Pairing koj lub xov tooj nrog koj lub computer kom hloov cov ntaub ntawv
- Txuas koj lub koob yees duab rau koj lub xov tooj kom muab cov duab tam sim ntawd
- Txuas koj lub smartwatch rau koj lub xov tooj kom tau txais cov ntawv ceeb toom thiab tswj koj lub cuab yeej
Txhim kho koj txoj kev ua neej
Bluetooth thev naus laus zis tau ua kom yooj yim los txhim kho koj txoj kev ua neej nyob rau ntau txoj hauv kev. Piv txwv li:
- Kev noj qab haus huv thiab kev noj qab haus huv apps tuaj yeem siv Bluetooth los taug qab koj cov ntaub ntawv kev tawm dag zog thiab kev noj qab haus huv, muab kev nkag siab zoo dua ntawm koj txoj kev noj qab haus huv thiab kev noj qab haus huv.
- Cov cuab yeej ntse hauv tsev tuaj yeem tswj tau ntawm Bluetooth, tso cai rau koj tswj koj lub teeb, ntsuas kub, thiab lwm yam khoom siv los ntawm koj lub xov tooj.
- Bluetooth-enabled hearing aids tuaj yeem tso suab ncaj qha los ntawm koj lub xov tooj, txhim kho koj qhov kev mloog zoo.
Tswj Kev Tswj
Bluetooth thev naus laus zis tseem tso cai rau koj tswj hwm koj cov khoom siv hauv ntau txoj hauv kev. Piv txwv li:
- Koj tuaj yeem siv Bluetooth los tswj koj lub koob yees duab lub kaw lus nyob deb, cia koj thaij duab los ntawm qhov deb.
- Koj tuaj yeem siv Bluetooth los tswj koj lub TV, tso cai rau koj kho lub ntim thiab hloov cov channel yam tsis tas yuav sawv ntawm lub rooj zaum.
- Koj tuaj yeem siv Bluetooth los tswj koj lub tso suab hauv lub tsheb, tso cai rau koj tso suab paj nruag los ntawm koj lub xov tooj yam tsis tas yuav kov koj lub cuab yeej.
Zuag qhia tag nrho, Bluetooth thev naus laus zis yog ntau yam thiab muaj txiaj ntsig zoo uas tuaj yeem siv ntau txoj hauv kev los txhim kho peb lub neej. Txawm hais tias koj xav txuas cov khoom siv, hloov cov ntaub ntawv, lossis tswj hwm koj cov khoom siv, Bluetooth muaj kev daws teeb meem zoo.
Yuav ua raws li
Zaus thiab Spectrum
Bluetooth ua haujlwm nyob rau hauv qhov tsis muaj ntawv tso cai 2.4 GHz zaus band, uas kuj tau sib koom los ntawm lwm cov thev naus laus zis xws li Zigbee thiab Wi-Fi. Qhov bandwidth no tau muab faib ua 79 channels, txhua tus muaj bandwidth ntawm 1 MHz. Bluetooth siv cov txheej txheem sib kis-spectrum zaus-hopping uas faib cov zaus muaj nyob rau hauv 1 MHz raws thiab ua raws li kev hloov pauv zaus (AFH) kom tsis txhob cuam tshuam los ntawm lwm yam khoom siv ua haujlwm hauv tib zaus. Bluetooth kuj tseem siv Gaussian zaus-hloov keying (GFSK) raws li nws cov qauv kev hloov kho, uas yog kev sib xyaw ua ke ntawm plaub theem-hloov keying (QPSK) thiab zaus-hloov keying (FSK) thiab tau hais kom muab cov zaus hloov pauv sai.
Ua khub thiab Kev Txuas
Txhawm rau tsim kom muaj kev sib txuas Bluetooth ntawm ob lub cuab yeej, lawv yuav tsum xub ua khub. Pairing suav nrog kev sib pauv tus cim tshwj xeeb hu ua qhov txuas txuas ntawm cov khoom siv. Qhov txuas tus yuam sij no yog siv los encrypt cov ntaub ntawv kis ntawm cov khoom siv. Pairing tuaj yeem pib los ntawm ob lub cuab yeej, tab sis ib lub cuab yeej yuav tsum ua raws li tus neeg pib thiab lwm yam ua tus teb. Ib zaug ua ke, cov khoom siv tuaj yeem tsim kev sib txuas thiab tsim ib lub piconet, uas tuaj yeem suav nrog txog xya lub khoom siv ua haujlwm ib zaug. Tus neeg pib tuaj yeem pib txuas nrog lwm yam khoom siv, ua ib qho scatternet.
Hloov cov ntaub ntawv thiab hom
Bluetooth tuaj yeem hloov cov ntaub ntawv hauv peb hom: suab, cov ntaub ntawv, thiab tshaj tawm. Lub suab hom yog siv rau kev xa suab ntawm cov khoom siv, xws li thaum siv Bluetooth headset los hu xov tooj. Cov ntaub ntawv hom yog siv rau kev hloov cov ntaub ntawv lossis lwm yam ntaub ntawv ntawm cov khoom siv. Kev tshaj tawm hom yog siv los xa cov ntaub ntawv mus rau txhua yam khoom siv hauv thaj tsam. Bluetooth hloov pauv sai ntawm cov hom no nyob ntawm seb hom ntaub ntawv raug xa mus. Bluetooth tseem muab kev kho qhov yuam kev rau pem hauv ntej (FEC) los txhim kho cov ntaub ntawv kev ntseeg siab.
Cwj pwm thiab Vagueness
Cov khoom siv Bluetooth yuav tsum mloog thiab tau txais cov ntaub ntawv tsuas yog thaum tsim nyog los ua kom lub nra hnyav ntawm lub network. Txawm li cas los xij, tus cwj pwm ntawm cov khoom siv Bluetooth tuaj yeem ua me ntsis tsis meej thiab yuav txawv nyob ntawm lub cuab yeej thiab nws qhov kev siv. Kev nyeem ntawv qhia txog kev siv Bluetooth tuaj yeem pab qhia meej qee qhov tsis meej. Bluetooth yog ib qho kev siv tshuab ad hoc, txhais tau hais tias nws tsis tas yuav muaj qhov chaw nruab nrab los ua haujlwm. Bluetooth pab kiag li lawm tuaj yeem ncav cuag ib leeg ncaj qha yam tsis tas yuav tsum tau hloov pauv lossis router.
Specifications thiab nta ntawm Bluetooth
Interoperability thiab Compatibility
- Bluetooth ua raws li cov txheej txheem kev qhia tshwj xeeb uas tsim los ntawm Bluetooth Special Interest Group (SIG) kom ntseeg tau tias muaj kev sib cuam tshuam ntawm cov khoom siv sib txawv.
- Bluetooth yog rov qab tau tshaj, txhais tau hais tias cov versions tshiab ntawm Bluetooth tuaj yeem ua haujlwm nrog cov laus dua ntawm Bluetooth.
- Bluetooth tau dhau los ua ntau yam hloov tshiab thiab txhim kho lub sijhawm, nrog rau tam sim no version yog Bluetooth 5.2.
- Bluetooth muab ib qho profile uas tso cai rau cov cuab yeej sib qhia cov ntaub ntawv thiab kev ua haujlwm, suav nrog kev muaj peev xwm hnov suab, saib xyuas kev noj qab haus huv, thiab khiav cov ntawv thov.
Mesh Networking thiab Dual Hom
- Bluetooth muaj qhov sib txawv mesh networking profile uas tso cai rau cov khoom siv los sib koom ua ke thiab muab kev sib txuas ruaj khov nyob rau thaj tsam loj dua.
- Bluetooth Dual Hom muab txoj hauv kev rau cov khoom siv los khiav ob qho tib si classic Bluetooth thiab Bluetooth Tsawg Zog (BLE) ib txhij, muab kev sib txuas zoo dua thiab kev ntseeg siab.
- BLE yog qhov ua kom zoo dua qub ntawm Bluetooth uas muab cov ntaub ntawv hloov pauv yooj yim thiab yooj yim rau cov neeg siv khoom txuas mus rau.
Kev ruaj ntseg thiab kev tshaj tawm
- Bluetooth muaj cov lus qhia tsim los ntawm National Institute of Standards and Technology (NIST) kom ntseeg tau tias kev ruaj ntseg ntawm Bluetooth txuas.
- Bluetooth siv cov txheej txheem hu ua kev tshaj tawm kom tso cai rau cov cuab yeej tshawb pom thiab txuas rau ib leeg.
- Bluetooth tau deprecated qee qhov qub nta uas tuaj yeem cuam tshuam rau kev tshem tawm ntawm kev txhawb nqa rau cov yam ntxwv yav tom ntej.
Zuag qhia tag nrho, Bluetooth yog cov cuab yeej siv dav siv wireless uas tau dhau los ua ntau yam hloov tshiab thiab txhim kho lub sijhawm los muab kev ua haujlwm zoo dua thiab kev ntseeg siab. Nrog nws cov nta thiab cov lus qhia tshwj xeeb, Bluetooth txuas ntxiv yog qhov kev xaiv nrov rau ntau tus kws kho mob thiab cov neeg siv khoom.
Cov ntsiab lus ntawm Bluetooth Technology
Bluetooth Architecture
Lub Bluetooth architecture muaj lub hauv paus ntsiab lus uas txhais los ntawm Bluetooth SIG (Tshwj Xeeb Pab Pawg) thiab hloov pauv xov tooj tau txais los ntawm ITU (International Telecommunication Union). Cov txheej txheem tseem ceeb muaj ib pawg uas tswj hwm cov kev pabcuam thoob ntiaj teb, thaum lub xov tooj hloov pauv tswj kev tsim, kev sib tham, thiab cov xwm txheej ntawm cov lus txib.
Bluetooth Kho Vajtse
Bluetooth hardware yog fabricated siv RF CMOS (Complementary Hlau-Oxide-Semiconductor) integrated circuits. Lub ntsiab interfaces ntawm Bluetooth kho vajtse yog RF interface thiab baseband interface.
Kev Pabcuam Bluetooth
Cov kev pabcuam Bluetooth suav nrog hauv Bluetooth pawg thiab yog ib qho txheej txheem ntawm PDUs (Protocol Data Units) xa ntawm cov khoom siv. Cov kev pabcuam hauv qab no tau txais kev txhawb nqa:
- Kev Pabcuam Discovery
- Kev sib txuas tsim
- Kev sib txuas lus
- Kev Xa Cov Ntaub Ntawv
- Command Status
Bluetooth Sib Xws
Bluetooth thev naus laus zis tau siv dav rau kev sib txuas ntawm tus kheej hauv cheeb tsam, tso cai rau cov khoom siv sib txuas lus wirelessly dhau qhov txwv tsis pub dhau. Cov khoom siv Bluetooth ua raws li cov txheej txheem tshwj xeeb thiab cov yam ntxwv kom ntseeg tau tias muaj kev sib raug zoo, suav nrog kev siv qhov tshwj xeeb MAC (Media Access Control) chaw nyob thiab muaj peev xwm khiav Bluetooth pawg. Bluetooth tseem txhawb nqa asynchronous cov ntaub ntawv hloov chaw thiab tswj kev ua yuam kev siv ARQ thiab FEC.
Txuas nrog Bluetooth
Pairing Devices
Txuas cov khoom siv nrog Bluetooth yog txoj hauv kev tshwj xeeb thiab yooj yim los txuas koj cov khoom siv wirelessly. Pairing pab kiag li lawm koom nrog rau npe thiab txuas ob lub Bluetooth-enabled li, xws li ib tug smartphone thiab ib lub laptop, pauv cov ntaub ntawv tsis muaj ib tug xov tooj. Ntawm no yog yuav ua li cas sib txuas cov cuab yeej:
- Qhib Bluetooth ntawm ob lub cuab yeej.
- Ntawm ib lub cuab yeej, xaiv lwm lub cuab yeej los ntawm cov npe ntawm cov khoom siv muaj uas tshwm sim.
- Coj mus rhaub "Pib" lossis "Txuas" khawm.
- Ib me ntsis ntawm cov cai yog pauv ntawm cov khoom siv los xyuas kom meej tias lawv yog qhov tseeb.
- Cov cai pab xyuas kom meej tias cov khoom siv yog qhov tseeb thiab tsis yog lwm tus lub cuab yeej.
- Cov txheej txheem ntawm kev sib txuas cov cuab yeej yuav txawv nyob ntawm lub cuab yeej koj siv. Piv txwv li, kev sib txuas lub iPad nrog tus hais lus Bluetooth tuaj yeem cuam tshuam cov txheej txheem sib txawv dua li kev sib txuas lub smartphone nrog lub laptop.
Kev Txiav Txim Siab Kev Ruaj Ntseg
Bluetooth thev naus laus zis yog qhov tsim nyog muaj kev nyab xeeb thiab tiv thaiv kev eavesdropping xws li. Kev hloov mus rau hauv xov tooj cua frequencies txwv tsis pub nkag tau yooj yim rau cov ntaub ntawv raug xa mus. Txawm li cas los xij, Bluetooth thev naus laus zis muaj qee qhov kev pheej hmoo kev nyab xeeb, thiab nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov kev nyab xeeb thaum siv nws. Nov yog qee qhov kev xav txog kev ruaj ntseg:
- Txwv Bluetooth kev ua ub no rau cov khoom siv tshwj xeeb thiab txwv cov kev ua ub no tso cai.
- Koom nrog cov haujlwm uas tau tso cai thiab zam cov uas tsis yog.
- Paub txog cov neeg nyiag nkas uas tuaj yeem sim nkag mus rau koj lub cuab yeej tsis raug cai.
- Disable Bluetooth thaum tsis siv.
- Ib txwm siv qhov tshiab tshaj plaws ntawm Bluetooth, uas muaj kev txhim kho bandwidth thiab kev ruaj ntseg nta.
- Paub txog qhov txaus ntshai ntawm tethering, uas tso cai rau koj qhia koj lub cuab yeej kev sib txuas hauv internet nrog rau lwm yam khoom siv.
- Pairing li nyob rau hauv ib cheeb tsam pej xeem tej zaum yuav muaj kev pheej hmoo yog hais tias ib tug tsis paub ntaus ntawv tshwm nyob rau hauv daim ntawv teev cov khoom siv.
- Bluetooth thev naus laus zis tuaj yeem siv los txhawb cov cuab yeej ntse xws li Amazon Echo lossis Google Tsev, uas yog portable thiab tsim los siv rau ntawm kev mus, xws li ntawm ntug hiav txwv.
Txawv
Bluetooth vs Rf
Yog lawm, sib sau ua ke thiab cia peb tham txog qhov sib txawv ntawm Bluetooth thiab RF. Tam sim no, kuv paub tias koj tab tom xav li cas, "Dab tsi yog cov heck?" Zoo, cia kuv qhia koj, lawv yog ob txoj hauv kev los txuas koj cov khoom siv hluav taws xob wirelessly, tab sis lawv muaj qee qhov sib txawv zoo nkauj.
Ua ntej tshaj, cia peb tham txog bandwidth. RF, los yog xov tooj cua zaus, muaj ib tug dav bandwidth tshaj Bluetooth. Xav txog nws zoo li txoj kev loj, RF zoo li 10 txoj kab kev loj thaum Bluetooth zoo li ib txoj kab. Qhov no txhais tau hais tias RF tuaj yeem tuav cov ntaub ntawv ntau dua ib zaug, uas yog qhov zoo rau tej yam xws li streaming video lossis suab paj nruag.
Tab sis ntawm no yog qhov ntes, RF yuav tsum muaj lub zog ua haujlwm ntau dua li Bluetooth. Nws zoo li qhov txawv ntawm Hummer thiab Prius. RF yog lub roj-guzzling Hummer, thaum Bluetooth yog eco-friendly Prius. Bluetooth xav tau lub zog tsawg dua los ua haujlwm, uas txhais tau tias nws tuaj yeem ua ke rau hauv cov khoom siv me me xws li lub mloog pob ntseg lossis smartwatches.
Tam sim no cia peb tham txog yuav ua li cas lawv txuas. RF siv electromagnetic teb los xa cov ntaub ntawv, thaum Bluetooth siv xov tooj cua nthwv dej. Nws zoo li qhov sib txawv ntawm kev sau khawv koob thiab xov tooj cua tshaj tawm. RF xav tau lub tshuab xa hluav taws xob tshwj xeeb los ua haujlwm, thaum Bluetooth tuaj yeem txuas ncaj qha rau koj lub cuab yeej.
Tab sis tsis txhob suav RF tawm tam sim no, nws muaj qhov ua kom yuam kev ntawm nws lub tes tsho. RF tuaj yeem siv infrared (IR) thev naus laus zis los txuas cov khoom siv, uas txhais tau tias nws tsis xav tau lub tshuab xa hluav taws xob tshwj xeeb. Nws zoo li kev sib tuav tes zais cia ntawm cov khoom siv.
Thaum kawg, cia peb tham txog qhov loj me. Bluetooth muaj lub nti me me dua li RF, uas txhais tau tias nws tuaj yeem muab tso rau hauv cov khoom siv me me. Nws zoo li qhov sib txawv ntawm lub tsheb loj SUV thiab lub tsheb compact. Bluetooth tuaj yeem siv rau hauv cov pob ntseg me me, thaum RF zoo dua rau cov khoom siv loj dua li cov neeg hais lus.
Yog li ntawd koj muaj nws folks, qhov sib txawv ntawm Bluetooth thiab RF. Tsuas yog nco ntsoov, RF zoo li Hummer, thaum Bluetooth zoo li Prius. Xaiv kom zoo.
xaus
Yog li, Bluetooth yog tus qauv siv thev naus laus zis wireless uas ua rau cov khoom siv sib txuas lus nrog ib leeg hauv qhov luv luv.
Nws yog qhov zoo rau kev sib txuas ntawm tus kheej hauv cheeb tsam, thiab koj tuaj yeem siv nws los ua kom koj lub neej yooj yim dua. Yog li tsis txhob ntshai mus tshawb nrhiav txhua qhov muaj peev xwm uas nws muaj.
Kuv yog Joost Nusselder, tus tsim ntawm Neaera thiab tus neeg lag luam cov ntsiab lus, txiv, thiab nyiam sim cov cuab yeej tshiab nrog guitar ntawm lub siab ntawm kuv txoj kev mob siab rau, thiab ua ke nrog kuv pab neeg, Kuv tau tsim cov ntsiab lus ntawm blog txij li xyoo 2020. los pab cov neeg nyeem siab ncaj nrog cov ntaub ntawv kaw lus thiab cov lus qhia guitar.
