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A Nirvana Phone concept refers to a smartphone that can be docked with external displays and keyboards to create an alternative desktop or laptop computer system. This is not any particular brand of phone or software, rather it defines a new category of mobile device with a capability beyond a conventional smartphone computer.〔(What Today's Smartphone Needs ) (PC Magazine, Mar 2009)〕 The NirvanaPhone provides the processor, storage media, display adapter, communication channels, and operating system. The docking station provides power, and connectivity. To be useful the NirvanaPhone differs from a simple smartphone by having significant processing power, video output at high resolution, plus keyboard and mouse input. A smartphone is generally accepted as a device that has both mobile phone capability as well as an operating system that can run applications such as email, web browser, media player and personal organizers. The NirvanaPhone adds external monitor capability which could be a computer monitor, an HDTV, or a video projector. The dock could be a cradle, cable or a wireless connection. This allows the NirvanaPhone to run applications that can utilize a full-sized display for better readability or collaboration. Or in combination with a keyboard and mouse, perhaps using Bluetooth, the NirvanaPhone could act as a thin client connected to a virtual desktop for business use. ==History== The concept of using a smartphone as a PC has been around for a number of years.〔(Cell Phone Hegemony ) (PC Magazine, Dec 2003)〕 As early as 2002, the Treo 180 running Palm OS could be docked with a keyboard but lacked data communications. By 2007, the Nokia N93/N95〔(Nokia N93/N95 specification )〕 smartphone running Symbian OS included a TV-out feature, but the NTSC video was only adequate for photo and low resolution video viewing and the phone did not support many applications. The newer Nokia phones have HD video-out capability and their application set and connectivity options have grown. The i-Mate 8501/8502, also released in 2007,〔(i-mate Ultimate hits stores ) (ITP.net, Dec 2007)〕 was perhaps the first smartphone that provided a full 1024×768 XVGA resolution which could support a full desktop user interface. While short-lived,〔(Exclusive: i-Mate Shuts Down )(ITP.net, Sep 2009)〕 the i-Mate with a receiver application installed and network linked to a remote server with desktop virtualization software could provide a full PC experience. As early as 2008,〔(Mobile Virtual Desktops, Motorola Announce a Nirvana Phone ) (Virtualization Practice, Jan 2011)〕 Citrix Systems coined the phrase ''Nirvana Phone'' and articulated the benefits. To minimize the processing, memory, and storage requirements on the phone, Citrix and Open Kernel Labs〔(Virtualization Makes Smartphones Into Laptop Surrogates ) (Information Week, Jan 2011)〕 developed a thin client - virtual server software suite that was first demonstrated in 2010.〔('Nirvana Phone' Treats the Phone as a PC ) (PC Magazine, Feb 2010)〕〔(Nirvana Phone Lets You Leave Your Laptop at Home ) (SlashGear, Feb 2010)〕〔(The ‘nirvana phone’ turns your phone into a portable computer ) (Mobile Venture Beat, Feb 2010)〕〔(Nirvana phone provides the full desktop experience -- BYO keyboard and monitor (video) )) (Engadget, Feb 2010)〕〔(Demo: The Nirvana Phone in Action ) (YouTube, Jan 2010)〕 In 2010 a new generation of smartphones appeared including many that have the required video-out capability to qualify as a NirvanaPhone. The HTC EVO phone includes HDMI capability which can output 720p resolution, high enough for virtual desktop usage. The Dell Streak also includes HDMI through a docking station. The iPhone 4 provide an optional VGA connector that can support up to 1024×768 resolution, also potentially capable of a desktop experience when connected to an external monitor. This movement included Nvidia's Tegra 2 system-on-a-chip that integrated both multiple CPUs and a GPU.〔(“Tegra 2″ is to make Smartphone computer-centric:CEO OF NVIDIA ) (TechPinger, Nov 2010)〕 By 2011, the Motorola Atrix 4G was introduced as a fully operational NirvanaPhone. Using the Atrix's 1280×720 video output through a mini-HDMI connector, Motorola developed a light docking station that converts the Atrix into an instant laptop. The Atrix smartphone also has a dual-core 1 GHz processor, giving it better performance than many contemporary smartphones and tablets. The concept used by the Atrix received positive reviews and awards such as best smartphone CES 2011〔(Breakthrough device of CES: Motorola Atrix = Phone+PC ) (TechRepublic, January 2011)〕 However the Atrix specifically has also had negative reviews based on the cost of the docking stations.〔(Reasons the $499 Laptop Dock is a Tough Sell ) (Gigaom, Feb 2011)〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Nirvana Phone」の詳細全文を読む スポンサード リンク
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