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    藍牙4.0

    技術簡介

    藍牙4.0為藍牙3.0的升級標準  藍牙4.0 耳機 WOOWI HERO
    藍牙4.0最重要的特性是省電科技,極低的運行和待機功耗可以使一粒紐扣電池連續工作數年之久。此外,低成本和跨廠商互操作性,3毫秒低延遲、100米以上超長距離、AES-128加密等諸多特色,可以用于計步器、心律監視器、智能儀表、傳感器物聯網等眾多領域,大大擴展藍牙技術的應用范圍。[1]
    藍牙4.0已經走向了商用,在最新款的Galaxy S3、S4、Note2、SurfaceRT、iPhone 5、iPhone 4S、魅族MX2、Moto Droid Razr、HTC One X、小米手機2、The New iPad、iPad 4、 MacBook Air、Macbook Pro以及臺商ACER AS3951系列/Getway NV57系列,ASUS UX21/31三星NOTE系列上都已應用了藍牙4.0技術。很多品牌已推出藍牙4.0版本周邊設備,同時支持藍牙4.0 和NFC 的WOOWI HERO、jabra MOTION等,支持藍牙4.0的音箱有Big jambox、Braven等產品。
    藍牙技術聯盟(Bluetooth SIG)2010年7月7日宣布,正式采納藍牙4.0核心規范(Bluetooth Core Specification Version 4.0 ),并啟動對應的認證計劃。會員廠商可以提交其產品進行測試,通過后將獲得藍牙4.0標準認證。 該技術擁有極低的運行和待機功耗,使用一粒紐扣電池甚至可連續工作數年之久。

    主要特點
    藍牙4.0是藍牙3.0+HS規范的補充,專門面向對成本和功耗都有較高要求的無線方案,可廣泛用于衛生保健、體育健身、家庭娛樂、安全保障等諸多領域。  藍牙鑰匙
    它支持兩種部署方式:雙模式和單模式。雙模式中,低功耗藍牙功能集成在現有的經典藍牙控制器中,或再在現有經典藍牙技術(2.1+EDR/3.0+HS)芯片上增加低功耗堆棧,整體架構基本不變,因此成本增加有限。
    單模式面向高度集成、緊湊的設備,使用一個輕量級連接層(Link Layer)提供超低功耗的待機模式操作、簡單設備恢復和可靠的點對多點數據傳輸,還能讓聯網傳感器在藍牙傳輸中安排好低功耗藍牙流量的次序,同時還有高級節能和安全加密連接。


    發表時間:[2013-09-12 15:48:22]

    红运彩
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