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Ultra HD Blu-ray (4K Ultra HD, UHD-BD, or 4K Blu-ray) [2] [3] is a digital optical disc data storage format that is an enhanced variant of Blu-ray. [4] Ultra HD Blu-ray supports 4K UHD (3840 × 2160 pixel resolution) video at frame rates up to 60 progressive frames per second, [4] encoded using High-Efficiency Video Coding. [4]
The player supports HDR10 and Dolby Vision high-dynamic-range standards but not HDR10+. [1] [3] The Dolby Vision support was added after release. [4] [3] There are two HDMI ports, the other being audio only. [4] Compared to the older model, UBP-X800, X700 supports only single band 2.4 GHz Wi-Fi, while the X800 model supports dual band 5 GHz ...
CNET summarized: "The Oppo UDP-203 is an excellent high-end 4K Blu-ray disc player, but image quality improvements over cheaper players are tough to spot." [8] Audioholics said: "The UDP-203/205 leave videophiles wanting very little and both players should satisfy all but the most critical audiophiles."
At the same time, Microsoft and Toshiba jointly announced that they would cooperate in developing high-definition DVD players. [19] In a top-level meeting in July, Microsoft's Bill Gates argued that the Blu-ray standard had to change to "work more smoothly with personal computers". The Blu-ray Disc's representatives defended the technology. [20]
The new discs were to overlay the Blu-ray and HD DVD layers, placing them respectively 0.1 millimetres (100 μm) and 0.5 millimetres (500 μm) beneath the surface. The Blu-ray top layer would act as a two-way mirror, reflecting just enough light for a Blu-ray reader to read and an HD DVD player to ignore. [18]
DP-UB820EB has stood the test of time remaining our go-to recommendation for a 4K Blu-ray player that won't blow the budget." [5] TechRadar summarized: "It's built to last and even though it is a few years old, it's still one of the standard bearers for what a 4K Blu-ray player should be."