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| lifespan = | price = US$499/€499〔/£429〔/JP¥49,980〔2014-05-26, (Microsoft reveals prices of two Xbox One variations for Japan ), Polygon〕/CN¥3,699 | discontinued = | unitssold = 3 million ()〔(Microsoft’s Xbox One Sales Hit 3 Million ) January 6, 2014〕 | unitsshipped = 10 million () | media = Blu-ray, DVD, CD | os = Xbox One system software | power = | soc = | cpu = Custom 1.75 GHz AMD 8-core APU (2 quad-core Jaguar modules)〔 | graphics = 853 MHz AMD Radeon GCN architecture (inside of APU) | storage = | memory = 8 GB DDR3 (5 GB available to games)〔 | display = 4K, 1080p, and 720p | sound = 7.1 surround sound | input =HDMI | controllers = Xbox One controller, Kinect for Xbox One, SmartGlass, Xbox One Media Remote | camera = 1080p Kinect camera | touchpad = | connectivity = Wi-Fi IEEE 802.11n, Ethernet, 3× USB 3.0, HDMI 1.4 in/out, S/PDIF out, IR-out, Kinect port | service = Xbox Live | dimensions = | weight = | topgame = | compatibility =Selected Xbox 360 games | predecessor = Xbox 360 | successor = | related = | website = }} The Xbox One is a home video game console developed by Microsoft. Announced on May 21, 2013, it is the successor to the Xbox 360 and the third console in the Xbox family. It directly competes with Sony Computer Entertainment's PlayStation 4 and Nintendo's Wii U as part of the eighth generation of video game consoles. The Xbox One was released in North America, several European markets, Australia, and New Zealand on November 22, 2013, and in 26 other markets, including Japan, the remaining European markets, and the Middle East, in September 2014. It is also the first Xbox game console to be released in China, specifically in the Shanghai Free-Trade Zone. Microsoft and various publications have classified the device as an "all-in-one entertainment system", making it a competitor to other digital media players, such as the Apple TV and Google TV platforms. Moving away from the Xbox 360's PowerPC-based architecture—back to the x86 architecture used in the original Xbox—the console features an Advanced Micro Devices processor built around the x86-64 instruction set. The Xbox One places an increased emphasis on cloud computing and entertainment integration, offering the ability to overlay live television programming from an existing set-top box with an enhanced program guide, split-screen multitasking of applications, and improved second-screen support. The console optionally includes an upgraded Kinect sensor, providing richer motion tracking and voice recognition for use in its graphical user interface (GUI) and games. The Xbox One also offers the ability for users to record and share highlights from or live-stream gameplay. The console's controller was refined over that of the Xbox 360, with a redesigned D-pad and triggers capable of delivering directional haptic feedback. Prior to its official release, the Xbox One received mixed reviews: the entertainment-oriented features were praised, but there was controversy surrounding several policy changes since the Xbox 360's release, including a proposed always-on digital rights management (DRM) system, and privacy concerns over a mandate that the Kinect be used at all times. Microsoft retracted these changes prior to the console's launch, and it received mostly positive reception for its refined controller design, multimedia features, user interface, and voice navigation. ==History== Xbox One is the successor to Xbox 360, Microsoft's previous video game console, which was introduced in 2005 as part of the seventh generation of video game consoles. , it remains in production by Microsoft, having received a number of small hardware revisions to reduce the unit's size and improve its reliability. In 2010, Microsoft's Chris Lewis stated that the 360 was about "halfway" through its lifecycle; this was aided by the introduction of the Kinect device that year which Lewis stated would extend the lifecycle by five years. Initial hardware for the 360's successor, commonly referred to by the industry as the "Xbox 720", was reportedly in hands of developers as early as May 2011. The official developer kit was codenamed Durango, and appeared to be available to developers by mid-2012. Leaked documents suggested that the new console would include an improved Kinect device, cloud access to games and media, integration with phone and tablet devices, and technology to provide players heads-up displays on glasses worn by the player, codenamed "Fortaleza"; Microsoft did not comment on these reported features. Similar, leaked design documents also suggested that Microsoft was seeking to eliminate the ability to play used games, though Microsoft later clarified they were still reviewing the design and were "thinking about what is next and how we can push the boundaries of technology like we did with Kinect", but did not comment on the validity of the information. The console was publicly unveiled under the name Xbox One on May 21, 2013 in a press conference designed to cover the unit's broad multimedia and social capabilities. A second press event for the console was held during E3 on June 10, 2013, focusing on its video game-oriented functionality.〔 At that time, Microsoft announced that the console would be released in 21 different markets on November 22, 2013, but this was later amended down to 13.〔〔 The change, which pushed the release date for the other eight markets to 2014, was attributed to unforeseen complexity in localizing the device's voice recognition capabilities. Later, in September 2014, the Xbox One was released in 26 markets, including remaining markets in Europe, the Japanese market, and Middle Eastern markets. In 2015, four members of an international hacking group pled guilty to gaining unauthorized access to Microsoft's computer network and obtaining sensitive information relating to Xbox One and Xbox Live.〔U.S. Department of Justice. (Fourth member of hacking ring pleads guilty to hacking and intellectual property theft ), fbi.gov, April 1, 2015.〕 At the time of the security breach, Microsoft was in the development stage for its next-generation gaming system. Between 2011 and 2013, the hackers spent hundreds of hours searching through Microsoft's network copying log-in credentials, source code, technical specifications and other data. Group members say they were driven by an immense curiosity about Microsoft's then-unreleased Xbox One console and associated software. "Using stolen access credentials", two of the a hackers also committed a physical theft by entering "a secure building on Microsoft's Redmond Washington campus" and carrying away three "Durango" development kits.〔(FBI arrests trio for Microsoft Xbox hacking ), The Smoking Gun, April 10, 2014.〕〔Stephen Totilo. (Hackers Charged With Stealing From Valve, Microsoft And More ), kotaku.com, September 30, 2014.〕 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「Xbox One」の詳細全文を読む スポンサード リンク
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