Posts tagged rec.2020
HDTV Test: Do 4K Blu-ray Discs Contain Colours Outside DCI-P3?

TV reviewer and professional calibrator Vincent Teoh wanted to find out if there are any examples of Hollywood-produced content that take advantage of the full BT.2020 color gamut capabilities of the UHD Blu Ray format. Using the out-of-gamut color mode on the Sony HX310, he went looking for “zebra stripes” (a warning that the content falls outside of the monitor’s DCI-P3 gamut) in popular content.

The results may suprise you.

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HD Guru: Rec. 2020 Color Gamut Achievable Soon with Quantum Dots

The International Telecommunications Union’s (ITU) Rec. 2020 standard for wide color gamut, which has been set as a target for next-generation 4K Ultra HDTV displays and is included in the recently published Ultra HD Blu-ray specification, may be achievable more quickly than many industry experts thought.

That was the assessment of quantum dot technology specialists from 3M’s Display Materials and Systems Division attending last week’s SID Display Week show. The company intended its statements and demonstrations at the show to contribute to a discussion on how to set guidelines for displays to qualify as Rec. 2020 complaint.

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3M Announces Rec. 2020 Readiness at Display Week 2015

3M Display Materials and Systems Division announced the company has developed technology solutions addressing the Rec. 2020 standard for color enhanced UHD displays at SID Display Week. In San Jose, Calif., 3M is showcasing flat panel displays of all sizes with up to 93.7 percent Rec. 2020 color gamut, one of the largest known color gamuts in any display, in an otherwise commercially available 4K LCD monitor.

“Rec. 2020 color performance was thought to be in the distant future, but with the addition of Quantum Dot technology and the 3M Quantum Dot Enhancement Film, this performance is available today,” said James Thielen, 3M Product Development Specialist and SID Display Week symposium speaker.

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SPIE Newsroom: Quantum dots for ultra-high color gamuts in LCDs

The color gamut of LCDs is currently limited by the backlight. In today's LCDs, the dominant backlight technology is based on white LEDs, which are composed of blue LED chips combined with cerium-doped yttrium aluminum garnet, a broadband yellow phosphor with low spectral weights at green and red wavelengths. To fabricate displays with a high color gamut using these white LEDs requires color filters with very narrow transmission bandwidths. As a result, the transmissivity of the liquid crystal panels is much reduced, leading to poor power efficiency.

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Image Science Foundation Unravels 4K: Does Color Trump Resolution?

Taking a step back from all of the 4K enthusiasm is Joel Silver, president of the Imaging Science Foundation (ISF) and one of the A/V industry’s preeminent video experts. For well over a year, Silver has been cautioning installers that there are other fundamentals in place that should take a higher priority than resolution...

Underscoring what is happening in the video world, Silver emphasizes that 4K is just the first part of a new system. “Frankly [4K] is the least impressive part of the roll-out,” he boasts.

According to Silver, the underpublicized part of the impending video industry’s format updates is the expanded color gamut that could become a part of their final specification.

“The 2020 color space (the International Telecommunications Union Radio Communications ITU-R BT.2020 recommendation) is going to be great for laser color space, but it will be difficult for older TVs.”

“Flat-panel TVs will be expensive,” he continues. “The broadcast space already uses [the spec]. I have a 17-inch HP laptop that was part of a venture with DreamWorks and it includes Rec 709 capabilities and the Adobe Color Space that is much better than HD. The laptop also does DCI (Digital Cinema Initiatives).”

“I can in a two-minute demo show pictures in three different color spaces. Improvements in color gamut are instantaneously superior to the average viewer. Showing Adobe Color Space over Rec 709 is noticeable. Glancing at 4K, the average person doesn’t see [a noticeable difference] because it is just resolution.”

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