news hardware Samsung invents Quantum HDR for its 4K TVs and PC gamer displays. explanations.
The more time passes, the more complicated it becomes to understand the different ranges of televisions. If you take a look at the latest 4K TVs or even some gamer screens from Samsung, you will surely see a particular name “Quantum HDR”. Because the world of technology moves very fast, we explain in one stone what HDR technology is and Samsung’s famous Quantum HDR.
General reminder: what is HDR technology?
Before talking about Quantum HDR, it is still necessary to understand what the acronym HDR implies. HDR means High Dynamic Range, or “wide dynamic range” in good French. Once you know that, you’re not that advanced, we agree. Let’s push the explanation.
The dynamic range of an image is the ratio of its highest to lowest brightness level. This brightness is measured in candelas per square meter (or nits for Americans, who don’t measure anything with meters). In nature, between a dark night and direct sunlight, there is an extremely high brightness ratio, thus an extremely wide dynamic range.
Our eyes aren’t capable of that much of a difference, but they still do much better than what classic HD movies offer. Inherited from our old televisions and their ridiculous level of brightness, HD and even UHD (Ultra High Definition) formats are very limited in their dynamic range.
The final rendering of content without HDR will often look eerie and unnatural (we see this a lot in a backlit image or sunset, for example). The principle of HDR technology is then to work on the contrast level of an image to get as close as possible to what the human eye perceives.
Most modern televisions, especially those from Samsung whose Neo QLED technology is known for its brightness, manage to achieve quite impressive levels of candelas per square meter. If a television from ten years ago reached 500 cd/m2, that was already very good. Samsung’s very high-end 2022 Neo QLED 8K TVs can hit 4,000 cd/m2.
More specifically, by improving the dynamics of an image, your eyes will more clearly distinguish the difference between two neighboring pixels. This has the effect of giving you the feeling of a big improvement in resolution, even if the resolution doesn’t change. youA scene processed by HDR technology has a much more realistic representation. The image looks deeper, sharper, more natural, in short, more beautiful.
What is Samsung Quantum HDR?
This being popularized, understand that HDR technology is not completely uniform. Even if the general principle remains the same, there are several HDR formats and labels developed by various companies… including Samsung and its famous “Quantum HDR”.
The word Quantum corresponds to the “Q” found in the acronym “QLED”. Samsung’s famous “quantum dots” aim to improve the level of color fidelity to the image (100% of the colors in the DCI-P3 space can be reproduced on a QLED screen). Quantum dots land on white LED diodes and produce purer primary colors (red, green, and blue). Quantum in LED…QLED.
The word “Quantum” is also used in the name “Quantum Processors” which designates the chips inside Samsung’s prestigious TVs. Thanks to their computing power, these processors allow, among other things, to improve the reproduction of an image, regardless of the quality of the source.. An artificial intelligence analyzes in an instant what is going to be projected on the screen and applies specific treatments to it for the pleasure of our eyes.
The use of the Quantum processor at the service of HDR technology grants the Quantum. HDR. Explanation finished? Not yet. You will surely notice that, in some products, Samsung mentions a number next to Quantum HDR certification. For example, on the screen of the ultra-high-end Samsung Odyssey Neo G9 gaming PC, we can see “Quantum HDR 2000” indicated. What does it mean ?
Thanks to the explanation about HDR technology in general, you may have guessed it: it is the number of candelas per square meter that the Samsung product in question can send out. For the case of the Neo G9 that we have just taken as an example, we thus have the indication that this screen has a maximum brightness of 2000 cd/m2. For a PC screen, it’s just monstrous.
Finally, please note that Samsung Quantum HDR products are still certified HDR10+. In compatible content (on YouTube or Amazon Prime Video, for example), we can benefit from HDR calibration shot by shot or even image by image (and not global over the entire movie as HDR offers).
In conclusion, it should be remembered that Quantum HDR is a derivative of HDR technology that allows better management of extended dynamic ranges. This specific derivative combines the advantages of QLED technology, Samsung’s most powerful processors and HDR10+ certification. Normally, if you have read everything, you should have understood everything in this paragraph.
By WarialJournalist jeuxvideo.com