uhd News - CNX Software - Embedded Systems News

March 24, 2016March 24, 2016 by Jean-Luc Aufranc (CNXSoft) - 3 Comments

ViXS Xcode 6800 Series Processors Support 4K 12-bit HEVC with HDR, VIDITY DRM

Now that 4K televisions are becoming more and more common, and 4K content is starting to be available via satellite (DVB-S2), online (Netflix, Amazon..), and off-line via UHD blu-ray discs, a new consumer initiative has been launched by the UHD Alliance. The UltraHD Premium logo will allow consumers to make sure their new 4K television also supports specific performance metrics for resolution, high dynamic range (HDR), peak luminance, black levels and wide color gamut. many of these new features will allow requires new content, and set-top box beside the compliant television. ViXS Xcode 6800 dual core Cortex-A9 dual-core processor will meet the requirement with a 4K 12bit HEVC (Main12) 60 fps video decoder, HDR Tone Mapping engine, HDMI 2.0a, and more. Some of the key features of ViXS Xcode 6800 processor: CPU – Dual core ARM Cortex A9 processor GPU – 3D graphics engine compliant with OpenGL-ES 2.0 and OpenGL-ES […]

March 3, 2016 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

DisplayPort 1.4 To Support 8K Displays over USB-C, [email protected] Hz, 32 Audio Channels

Just as 4K UHD televisions are getting more affordable with prices ever closer to their Full HD equivalent, the Video Electronics Standards Association (VESA) has published DisplayPort 1.4 specifications with support for 8K QUHD (7680 x 4320) resolution, High Dynamic Range (HDR), video compression and more. Some of the key enhancements or new features of the new specifications include: Up to 8Kp60Hz HDR deep color and 4Kp120Hz HDR deep color Display Stream Compression (DSC) – DSC 1.2 natively supports YCbCr 4:2:0 and 4:2:2 coding, and offers nearly lossless 3:1 compression ratio Forward Error Correction – FEC, which overlays the DSC 1.2 transport, addresses the transport error resiliency needed for compressed video transport to external displays. HDR meta transport – HDR meta transport uses the “secondary data packet” transport inherent in the DisplayPort standard to provide support for the current CTA 861.3 standard, which is useful for DP to HDMI 2.0a protocol […]

January 14, 2016 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

Texas Instruments 4K DLP Chip Should Bring Affordable 4K Projectors to the Home, Office and School

4K Ultra High Definition (UHD) is slowly with the price of 4K television going down, 4K media players flooding the market starting at $40, and 4K content appearing online via services like Netflix and over the air with DVB-S2. Thanks to the latest Texas Instruments DLP 0.67″ digital micromirror device (DMD), a cost down version of the 1.38″ DMD used in around 80% of cinemas worldwide, we could start seeing affordable 4K projectors in the second half of 2016. The chip includes 4 millions tiny mirrors that quickly switch to generate the ~8 millions pixels required by a 3840×2160 display, and should be found in projectors capable of delivering up to 5,000 lumens. The DLP chip can be used in home theaters, but also in the office and at school for presentations or courses were text needs to be easily readable. The solutions should delivery 100″+ displays with sharp images […]

January 24, 2015January 24, 2015 by Jean-Luc Aufranc (CNXSoft) - 44 Comments

LG 42UB820T 4K UHD TV Review

After several people often asked me about audio pass-through, and 4K video support on mini PCs, with some suggesting adding a donation button to my website, I decided to start a crowdfunding campaign to raise funds for an AV Receiver and a 4K TV by asking for donations and selling some samples I used for review. Thanks to the great help of my readers, I managed to get enough money to buy LG 42UB820T on Lazada for 19,610 Baht including shipping (~$600) via 10% coupon I got in a newsletter, as well Onkyo TX-NR636 7.2 channel receiver in a local shop in Chiang Mai (Sahapanich). I’m still waiting for the speakers, so I’ll start by reviewing the TV. This model is sold as 42UB820V in Europe, and 42UB8200 in Hong Kong and probably other markets. I spent a lot of time studying about 4K TV and AV receiver features, and […]

October 21, 2014October 21, 2014 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

Qualcomm Showcases 4K LTE HDMI TV Streaming Dongle

There are now many wireless display adapters supporting Miracast, EZCast, DLNA, Airplay…, and streaming videos from your smartphone to the TV over Wi-Fi in 720p or 1080p resolution. Qualcomm recently unveiled a prototype called “4K Stream Adapter (4SA)” that does about the same but instead support 4K UHD resolution, and allegedly supports LTE thanks to its Qualcomm Snapdragon 800+ processor. According to a PCWorld report, Qualcomm mainly expects the device to be used to stream 4K video captured with a phone to a 4k UHD television, but it might also ending up supporting online video services such as Netflix, and mirroring your mobile device’s display onto the big screen. It’s also said to use a “basic Universal Plug and Play protocol” to connect with other devices, and the company is working to support communication with media apps such as BubbleUPnP, VLC and MXPlayer. Currently 4SA is only a prototype to […]

October 17, 2014October 17, 2014 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

Mini PC Polls: Networking Connectivity, Video and Audio Outputs

It’s always interesting to find out how people use their devices, and I recently discovered Google+ support Polls as Droidmote posted a poll to find out whether people used Wi-Fi or Ethernet with their mini PCs, and I followed up with polls about video and audio outputs. Around 50 people have answered to each poll up to now, so even if it may not representative, let’s have a look at the results so far. About half of the people are connected via Ethernet, and the other half are using Wi-Fi after 43 votes. Wi-Fi is normally more convenient, but may not be as reliable, and for users playing high bitrate videos Ethernet is a must, unless you find buffering enjoyable…. After 58 votes, most people still connect their mini PC to a Full HD television via HDMI, with a few connecting it to a 4K UHD TV, and nobody using […]

October 6, 2014January 26, 2015 by Jean-Luc Aufranc (CNXSoft) - 27 Comments

Can Rockchip RK3288 Android TV Boxes Play Videos at True 4K UHD / 2160p Resolution?

[Update 2: Now that I have a 4K TV, I’ve redone the test myself, and Rockchip RK3288 can play 4K videos properly. The mistake was to use Software decode in MX Player which renders to the framebuffer instead of the video buffer. Visit the post entitled 4K Output and Video Playback Capability Tested on 6 ARM based mini PCs and Boards for details.] [Update 1: The post has now been updated, after it was clear one of MX Player options was misunderstood. The conclusion remains the same] Over the last few years there have been complains about Android TV boxes decoding 1080p video, rendering them to a 720p frame buffer, and upscaling them back to 1080p resolution for video output, so you ended up playing 1080p videos at a real 720p resolution. I never investigated the issue in details, and thanks to new media players now coming with a 1080p […]

September 26, 2014May 10, 2017 by Jean-Luc Aufranc (CNXSoft) - 21 Comments

Test Your 4K Device True Resolution With a 4K UHD / 2160p Video Test Pattern

Now many products are sold on the market advertising 4K video output, but how to check if it just a lie with only part of the system support 4K (e.g. physical video output), but the rest of the system makes you lose quality? When I worked on DVD players, we had some special DVDs with video pattern allowing us to test different video quality. You can read about different video test patterns in “AVSHD 709 DVD document“. There are also some expensive equipments such as DVDO AVLab TPG – 4K Test Pattern Generator that generate test patterns to calibrate video equipments, but if all we want to do is to check the resolution has not been tempered with there must be a cheaper and easier way. After having a discussion about this issue on Google+, Dan Car decided to create a 2160p (3840×2160) test pattern image with some text, and […]