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[Interview] Charting the Path From Development to Certification of Samsung’s Industry-First Circadian Rhythm Display TechnologyBy STF News
At CES 2023, Samsung Electronics presented Calm Technology services to its users through a variety of differentiated integrated connected experiences. Calm Technology refers to when a technology, through Samsung’s SmartThings platform, is able to automatically connect devices without any action required from the user.
To realize this vision of Calm Technology, Samsung has obtained the industry’s first Circadian Rhythm Display (CRD) certification from the German testing and certification agency Verband Deutscher Elektrotechniker (VDE). The certification was awarded to the Eye Comfort Mode feature of Samsung’s 2023 Neo QLED and Lifestyle TVs, The Frame, The Serif and The Sero.1
The concept of pairing circadian rhythm with display technologies might seem unusual. So what exactly inspired Samsung to pursue it, and what was the process like from planning through to development and certification? To learn more, Samsung Newsroom sat down with three professionals who made this recent CRD certification possible, Taehwan Cha of the Picture Quality Solution Lab, Gyuheon Lee of the Product Development Group and Beomkyun Rha of the Product Planning Group.
▲ (From left) Taehwan Cha of the Picture Quality Solution Lab, Gyuheon Lee of the Product Development Group and Beomkyun Rha of the Product Planning Group
The Unique Combination of Circadian Rhythm and Display Technology
The term “circadian” is derived from the Latin words “circa” (meaning “about”) and “diem” (meaning “day”). Human circadian rhythm can be described as the biological pattern of engaging in dynamic activities during the day and sleeping during the night as well as the secretion and inhibition of related hormones such as melatonin, cortisol and growth hormones that occur naturally according to this cycle.
“We were ultimately working to find a way to achieve the best picture quality while also guaranteeing viewing safety,” noted Rha of why Samsung initially started focusing on circadian rhythm. “The result was the creation of Eye Comfort Mode, a feature which automatically optimizes picture quality based on changes in circadian rhythm.”
One of the characteristics of Eye Comfort Mode is that it uses artificial intelligence (AI) to enable the most comfortable picture quality by automatically detecting changes in the viewing environment. Eye Comfort Mode adjusts the amount of blue light based on the local sunrise and sunset time as well as the surrounding lighting environment. By adjusting the screen’s luminance level and color, Eye Comfort Mode creates an effect similar to the different lighting styles that occur during daytime and nighttime, with lower luminance and color temperature aiding the user to sleep well.
“Since Eye Comfort Mode sets the picture quality based on the surrounding viewing environment, the user can enjoy good picture quality without any quality degradation, even with less blue light,” explained Rha. “When planning our approach to CRD, it was extremely important that we could control the amount of blue light being emitted without affecting the picture quality, so we engaged in constant research and discussion with the development team and picture quality team right from the planning stages.”
Eye Comfort Mode, the Secret To Picture Quality Optimization at All Hours of the Day
As Eye Comfort Mode operates based on localized information to recognize sunrise and sunset times, it has to be able to harness regional geographic information of where the TV is placed.
“The basic algorithm allows the TV to obtain and operate based on sunrise and sunset information from a regional weather application, which is identified based on the location information of the TV,” said Lee. “Thanks to this algorithm, users can watch TV with picture quality optimized to the changes in their circadian rhythms wherever they are in the world with Eye Comfort Mode.”
In addition to local sunrise and sunset times, the surrounding lighting environment is essential to optimizing picture quality for CRD purposes. Accordingly, the light sensor built into the TV measures the amount of external light. Then it determines how bright or dark the viewing environment is to optimize picture quality for the user automatically.
The CRD Certification, the Last Hurdle to Improving Reliability
▲ The 2023 Neo QLED TV is measured using a spectroradiometer, which measures a display’s luminance, chromaticity coordinates, spectrum and more.
Once a technology is out of the planning and development stages, the last step in the process is to cement the value of the technology through certification from an external agency. For their CRD technology, as with all others, the certification process began with establishing the relevant objective and standardized criteria.
Through an external collaboration project, Samsung discovered an index for circadian stimulus (CS) as defined by the U.S. Lighting Research Center. This CS index can quantitatively express the effect of Eye Comfort Mode in number form through association with a light source’s power to inhibit an individual’s melatonin secretion.
Following this discovery, Samsung then developed a test project in collaboration with an external research institute and proceeded to set up a certification with VDE in order to obtain the CRD certification.
To win the trust of our consumers, it is crucial that we can obtain certifications for our technologies from a credible agency,” explained Cha. “While ‘circadian rhythm’ may be a somewhat unfamiliar term, it was used even in the name of the certification to emphasize the intention and value add of the technology, which is to provide picture quality optimized based on circadian rhythm.”
Delivering the Ultimate Viewing Experience to Users
Despite being awarded the VDE certification, those working on the CRD technology are still determined to develop even more ways to bring users the best picture quality possible. “Since people have different picture quality preferences, my goal is to provide customizable picture quality based on personalized needs ultimately,” said Lee.
For Rha, too, the next step is rooted firmly in personalization. “Display technologies have advanced significantly in recent years, and I think we have reached a point where the industry possesses a similar approach across the board,” he explained. “Going forward, I want to focus on and develop consumer-friendly features specific to each user.”
Finally, for Cha, picture quality is a consideration that should be embedded in every aspect of development. “I always ask myself how I can create value in the TV features and performance technologies we design when working on external picture quality evaluation and certification,” he noted. “My goal is to embed such technologies and practices across all stages of our process, from product planning and development to the final stage of certification.”
Going forward, Samsung is constantly striving to provide the ultimate viewing experience that considers viewing safety. In addition to the CRD certification the company recently received, the company also received “Eye Care” certification from VDE and “Glare-Free” validation from UL last year, a testament to the ongoing innovation journey Samsung is pursuing.
Stay tuned to Samsung Newsroom for all the latest on the company’s leading TV and display products.
1 Certified Models: 2023 Neo QLED Q70C and superior models.
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Is it possible to do step-forward and step-rewind with TV's remote control on a video in Tizen browser?By Dzejbi
Is it possible to do step-forward and step-rewind with TV's remote control on a video in Tizen browser?
For example, when I open any video from www.Twitter.com on iPhone (in full screen), nice controls for step-forward / step-rewind show up (screenshot attached).
But I couldn't find similar feature when opening video from www.twitter.com on Tizen browser in SamsungTV.
Can it be achieved? Maybe there's a workaround? Maybe I should install a different browser on Tizen?
Hi, i recently bought Samsung 65q80b. I had a great smart remote with full keyboard, air mouse and IR learning functions. But neither multimedia buttons nor OK button works on new tv. I think these 3rd party remotes execute "left click" when you press OK. And Tizen doesn't record mouse clicks? Any hope about possible fw update in near future or any suggestion? Thanks.
By STF News
We are pleased to announce the release of Tizen Studio version 5.0
This release includes some new features and bug fixes in Tizen Studio IDE, Visual Studio Extension for
Tizen, and Visual Studio Code Extension for Tizen.
• Tizen IDE is now supported on Ubuntu 22.04.
• Visual Studio Code Extension for Tizen is now supported on 22.04.
• WHPX support has been added to Tizen emulators. Users can use HAXM or WHPX
accelerators to launch Tizen emulators on windows.
• Tizen installers are now notarized with Apple. Users can install Tizen Studio on macOS
without any notarization errors.
• Support for non-Samsung vendor TV has been added in IDE and CLI.
• RPK project support has been added in IDE and CLI.
• Added the option in CLI to include the files outside the app directory while packaging.
• Fixed the error of on-demand packages not getting installed in Visual Studio when multiple
target devices are launched.
• Fixed the issue of Multi app project not getting packaged in CLI, If static lib is the main
• Fixed the issue of directories not being created in the CLI packaging command when -o option is
• Valgrind profiling support has been removed from Tizen studio as it's not supported in the Tizen
• IOT setup manager support has been removed from Tizen studio.
For more information about the new features and bug fixes, see Release Notes.
To download Tizen Studio, visit https://developer.tizen.org/development/tizen-studio/download.
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By STF News
Samsung Electronics today announced a partnership with leading international ODM (Original Development Manufacturing) companies such as Atmaca, HKC and Tempo — a collaboration that will enable non-Samsung smart TV models to use Tizen OS for the first time. New TVs from Bauhn, Linsar, Sunny, Vispera and other brands1 will be available in Australia, Italy, New Zealand, Spain, Türkiye and the United Kingdom this year,2 allowing more consumers to enjoy a premium smart TV experience enabled by Tizen, an open source OS for Samsung Smart TV.
The new smart TVs powered by Tizen follow the announcement of Samsung’s Tizen TV Platform Licensing program at the Samsung Developer Conference (SDC) in 2021. The licensing program allows other TV brands to take advantage of Tizen OS, which provides industry-leading smart features, content discoverability tools, apps and modern user interface for the ultimate smart TV experience.
To support the seamless adoption of Tizen OS, Samsung collaborates with a selection of partners on content licensing and hardware optimizations. These partnerships give many TV brands access to a whole world of entertainment that Samsung Smart TVs exclusively provide, while also allowing Tizen to leverage its ever-expanding ecosystem to strengthen its offerings. Key features that the users of the licensed TV brands will gain access to include:3
Samsung TV Plus, Samsung’s free streaming TV and video platform that will allow users to enjoy hundreds of live channels, entertainment, news, shows and sports — for free. Universal Guide, allowing easy browsing and discovery of all content across different streaming apps, along with personalized recommendations so users can spend more time watching and less time searching. Bixby, a voice assistant platform that will provide users with more convenient way to explore smart TVs. Users can tell Bixby to search, watch, or perform various features.
Since Samsung teamed up with the Linux Foundation to unveil the first version in 2012, Tizen OS has made an exponential growth over the past decade. To date, around 200 million people from 197 countries are using Samsung Smart TVs powered by Tizen, and, the number is expected to expand with the latest addition of Tizen-powered smart TVs.
“2022 has been a memorable year for Tizen OS as we celebrate its 10th anniversary and the very first Tizen-powered smart TVs available from other brands,” said Yongjae Kim, Executive Vice President of Visual Display Business at Samsung Electronics. “Starting with these new Tizen-powered smart TVs, we will continue to expand the licensing program and introduce Tizen OS and its ecosystem to more products and brands around the world.”
For more details, please visit www.samsung.com.
1 Tizen TV brands include Akai, Bauhn, Linsar (distributed by Tempo), RCA, Vispera (distributed by HKC) Sunny and Axen (distributed by Atmaca).
2 Akai, Bauhn, Linsar Tizen TVs are available as of September 2022 in Australia. Other brands will be available later in Q4 2022.
3 Available smart features may vary depending on country.
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