4k blu ray wikipedia

The 4K television market share increased as prices fell dramatically during [2] and The term "4K" is generic and refers to any resolution with a horizontal pixel count of approximately 4, The terms "4K" and "Ultra HD" are 4k blu ray wikipedia more widely in marketing than "p".

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4k blu ray wikipedia

It was invented and developed in and released worldwide on June 20, , capable of storing several hours of high-definition video HDTV p and p. The main application of Blu-ray is as a medium for video material such as feature films and for the physical distribution of video games for the PlayStation 3 , PlayStation 4 , PlayStation 5 , Xbox One , and Xbox Series X. The name refers to the blue laser actually a violet laser used to read the disc, which allows information to be stored at a greater density than is possible with the longer-wavelength red laser used for DVDs. The BD format was developed by the Blu-ray Disc Association , a group representing makers of consumer electronics, computer hardware, and motion pictures. Sony unveiled the first Blu-ray Disc prototypes in October , and the first prototype player was released in Japan in April Afterward, it continued to be developed until its official worldwide release on June 20, , beginning the high-definition optical disc format war , where Blu-ray Disc competed with the HD DVD format. Also, the Association introduced an enhanced variant of Blu-ray for playback of 8K content in Japan. The information density of the DVD format was limited by the wavelength of the laser diodes used. Following protracted development, blue laser diodes operating at nanometers became available on a production basis, allowing for development of a denser storage format that could hold higher-definition media, with prototype discs made with diodes at a slightly longer wavelength of nanometers in October The core technologies of the formats are similar. Hollywood studios insisted that players be equipped with digital rights management before they would release movies for the new format, and they wanted a new DRM system that would be more secure than the failed Content Scramble System CSS used on DVDs.

Vijaya Kumar; Hiromichi Kobori eds. AOL Inc. Archived from the original on August 26,

Optical discs under this standard also support up to GB of data. The following file is a duplicate of this file more details :. This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file. Contents move to sidebar hide.

Our expert, award-winning staff selects the products we cover and rigorously researches and tests our top picks. If you buy through our links, we may get a commission. How we test TVs. Ultra HD 4K Blu-ray discs deliver the best home video picture quality you can buy. Here's what you need to know. Even better, many discs have high dynamic range HDR and wide color gamut WCG content, which provide a much more noticeable improvement than 4K resolution, provided your TV can deliver it. I hear you. But for people who want peak image quality, a disc is still the way to go.

4k blu ray wikipedia

In contrast, standard HDR10 only makes use of static metadata, which sets the same brightness and tone mapping for the entirety of the content. The case size is the same as that of a normal Blu-ray disc. This also means that each revolution of such a disc transfers more data than that of a standard Blu-ray Disc, which means the transfer rate is higher with the same linear velocity. In addition, the disc can be encoded to have the drive hold the full 5, rpm until it reaches a point slightly away from the innermost part of the disc if an even higher transfer rate is needed. AACS 2. On January 23, , the BDA spec v3. Broadcasters just need to produce a single feed, and the technology allows content to be converted into a format for both legacy screens and HDR screens. Subtitles use Presentation Graphic Stream , which is the same format as normal Blu-ray discs. Contents move to sidebar hide. Article Talk.

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Visual Effects in a Digital World. Archived from the original on November 26, Later that year, however, in September , Warner President Ron Sanders said that the technology was on hold due to Warner being the only company who would publish on it. Business Wire. The following pages on the English Wikipedia use this file pages on other projects are not listed :. See also History of optical storage media High-definition optical disc format war. System E , F. Discs with no flags set may not play in some non-compliant players. Archived from the original on Archived from the original on May 8, Toggle limited content width. Internal Blu-ray drives that are integrated into a computer as opposed to physically separate and connected via a cable typically have a SATA interface.

It took a few years to gain momentum, but 4K Ultra HD Blu-ray is now a firm fixture of virtually all major film releases.

General Optical disc Optical disc drive Optical disc authoring Authoring software Recording technologies Recording modes Packet writing Burst cutting area. Footage was compressed using H. Business Wire. Following these new developments, on February 19, , Toshiba announced it would end production of HD DVD devices, [56] allowing Blu-ray Disc to become the industry standard for high-density optical discs. Retrieved June 9, Archived from the original on 12 June PC Gamer. Archived from the original on October 13, Reuters the Hollywood Reporter. See also: Category: Mobile phones with 4K video recording. Retrieved January 19, However, Google recently announced plans to make a much larger selection of 4K video available on YouTube, using its new compression technology, called VP9.