science

Ultra HD Forum

Ultra HD Forum is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Ultra HD Forum rather than just read about it. In short: Ultra HD Forum is an organization whose goal is to help solve the real world hurdles in deploying Ultra HD video and thus to help promote UHD deployment. The Ultra HD Forum will help navigate amongst the standards related to high dynamic range (HDR), high frame rate (HFR), next generation audio (NGA), and wide color gamut (WCG).

Key takeaways

Ultra HD Forum belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Ultra HD Forum to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Ultra HD Forum from memory before moving on to harder problems.

Reference excerpt

Ultra HD Forum is an organization whose goal is to help solve the real world hurdles in deploying Ultra HD video and thus to help promote UHD deployment. The Ultra HD Forum will help navigate amongst the standards related to high dynamic range (HDR), high frame rate (HFR), next generation audio (NGA), and wide color gamut (WCG). The Ultra HD Forum is an industry organisation that is complementary to the UHD Alliance (that maintains consumer-facing logos), covering different aspects of the UHD ecosystem.

History On July 21, 2015, the Ultra HD Forum announced that they had over 20 member companies after incorporating as a US-based non-profit a month earlier. On April 18, 2016, the Ultra HD Forum announced industry guidelines for UHD Phase A content. The Ultra HD Forum also announced that it had increased to 46 member companies. On January 5, 2017, the Ultra HD Forum announced that their guidelines had been updated to version 1.2 (including things like immersive audio, BT.2100, etc.) and that additional companies have joined which includes Google. On September 14, 2017 the guidelines were updated to version 1.4 (including new definitions of PQ10 and HDR10, a matrix receiver/decoder capability combinations, the receiver/decoders combinations to render different formats, statistical methods of deriving CLL values, "graphics white" level for HLG as recommended by BBC and NHK, etc.)

UHD Phase A UHD Phase A covers broadcasting services to be launched by end of 2016 or early 2017. The guidelines for UHD Phase A are:

Display resolution of 1080p or 2160p (progressive video only); Wide color gamut (WCG) – wider than Rec. 709) (Rec. 2020 must be supported); High dynamic range (HDR) – at least 13 stops (213=8192:1); Bit depth of 10-bits per sample; Frame rate of up to 60 fps (integer frame rates preferred); 5.1-channel audio or immersive audio; Closed captions/subtitles. UHD Phase A consumer devices should be able to decode the High Efficiency Video Coding (HEVC) Main 10 profile Level 5.1 and process Hybrid log–gamma (HLG10) or Perceptual quantizer (PQ10)/HDR10 content using Rec. 2020 color primaries. The guidelines consider Rec. 2100 1080p content with Wide Color Gamut (BT.2020) and High Dynamic Range as Ultra HD service. The guidelines also document live and pre-recorded production, as well as the combination of HDR and SDR video content and conversion between BT.709 and BT.2020 color spaces and different HDR metadata formats. Broadcasters are advised to provide backward compatibility by using HLG10 with BT.2020 color space, or simulcasting PQ10 or HDR10 streams (for example, using Scalable HEVC).

UHD Phase B An April 7, 2018 Ultra HD Forum published UHD Guidelines for phase B. Technologies that have been included in UHD Phase B, which targets UHD services launching in 2018-2020, include:

Next Generation audio codecs supporting multiple audio objects (Dolby AC-4, DTS:X, MPEG-H 3D Audio); Scalable Video Coding to encode spatial (resolutions 1080p and 2160p), temporal (different frame rates), color gamut (BT.709 and BT.2020), and dynamic range (SDR and HDR) differences to provide backward-compatible video signal within a single program stream; Up to 12 bit color depth; High frame rates greater than 50/60 fps; UHD 8K resolution; Dynamic HDR metadata for per-scene coding (SMPTE ST 2094 Dynamic Metadata for Color Volume Transform): Single-layer HDR (SL-HDR1); Dual-layer HDR (Dolby Vision); ICtCp color encoding; Color Remapping Information (CRI).

Founding/charter members

Charter members

Contributor members

Associate members

See also Rec. 2020 – ITU-R Recommendation for UHD-TV Rec. 2100 – ITU-R Recommendation for HDR-TV

References

External links Official website

Worked examples

Example 1 — a first encounter with Ultra HD Forum

Start with the simplest possible case. Write down what Ultra HD Forum claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Ultra HD Forum before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Ultra HD Forum ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Ultra HD Forum

In research: Ultra HD Forum appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Ultra HD Forum in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Ultra HD Forum is common in secondary-school and first-year university syllabi. It links to neighbouring topics High dynamic range, Television technology, Ultra-high-definition television, so understanding it makes those chapters shorter.
In everyday life: Look for Ultra HD Forum outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Ultra HD Forum in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Ultra HD Forum means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Ultra HD Forum out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Ultra HD Forum in simple terms?

Why does Ultra HD Forum matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Ultra HD Forum?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Ultra HD Forum.