射頻與藍(lán)牙的比較

　　射頻與藍(lán)牙的比較

　　隨著無(wú)線(xiàn)技術(shù)進(jìn)入人類(lèi)界面設(shè)備（HID）市場(chǎng)，越來(lái)越多的尖端HID產(chǎn)品在市場(chǎng)上推出了集成無(wú)線(xiàn)技術(shù)（無(wú)線(xiàn)鍵盤(pán)、無(wú)線(xiàn)鼠標(biāo)等）。通常，開(kāi)發(fā)者的選擇是有限的：遵循一個(gè)流行的無(wú)線(xiàn)標(biāo)準(zhǔn)，比如藍(lán)牙，或者為他們的應(yīng)用開(kāi)發(fā)一個(gè)專(zhuān)有協(xié)議。雖然無(wú)線(xiàn)標(biāo)準(zhǔn)提供了互操作性的好處，但它們也引入了應(yīng)用程序可能不需要的復(fù)雜性和開(kāi)銷(xiāo)，從而導(dǎo)致更高的系統(tǒng)成本。另一方面，專(zhuān)有協(xié)議為開(kāi)發(fā)人員提供了定制應(yīng)用程序的靈活性，而代價(jià)是要求開(kāi)發(fā)人員承擔(dān)開(kāi)發(fā)過(guò)程。

　　The key RF requirements for selecting a PC HID are cost （the PC HID market is extremely cost sensitive）， security， range， power consumption， latency， interference， co-location， and ease of use. In general， standards win in the market because of interoperability of the devices. However， in the case of PC HIDs until 2009， only proprietary protocols have dominated the market. This can be attributed to the lack of any wireless standard optimized for the PC HID market in terms of cost， power and efficiency. With the advent of Bluetooth Low Energy Wireless technology aimed at low power applications， we can foresee a new wireless standard occupying the PC HID market. This article compares the Bluetooth 4.0 Wireless technology with the proprietary protocols in the HID market.