411 on HDMI 2.1

January 18, 2018 at 8:00 AM

 

HDMI is one of the most widely recognized technologies used in video display applications today. It is used on newer HDTVs, Blu-ray players, Apple TVs, computers and many other video display devices. Able to stream both video and audio at the same time, the simple plug and play interface is easy to use, offers high definition video, crystal clear auido, and now HDMI is about to get even better!

 

HDMI recently released its newest specification, HDMI 2.1, and it is slated to take video to the next level.

 

Here is the 411 on HDMI 2.1:

 

·       Supports a range of higher video resolutions and faster refresh rates, including 8K 60Hz and 4K 120Hz for a captivating viewing expereince and smooth fast-action detail

 

·       Dynamic HDR displays every monent of a video at its ideal level of depth, detail, brightness, contrast and wider color gamuts, even when being viewed frame-by frame

 

·       48G cable for increased bandwidth up to 48Gbps for uncompressed HDMI 2.1 to support features including HDR and 8K video

 

·       Backward compatible with earlier HDMI versions

 

·       eARC provides support for advanced audio formats such as object-based audio. It also allows for advanced audio signal control abilities including device auto-detect.

 

·       Game Mode VRR includes variable refresh rate, which permits a 3D graphics processor to display the image at the same time it is rendered. This provides gameplay with better detail and more fluidity, it also reduces or eliminates lag, stutter and frame tearing.

 

As with all HDMI desginated products, thorough testing must be done to garner the HDMI 2.1 seal of approval. In regards to earlier HDMI specifications, HDMI 2.1 will superceded 2.0b and will continue to refernce and rely upon the 1.4b specification. HDMI 2.0 adopters will automatically have access to the HDMI 2.1 specification, HDMI 1.4b adopters will not have access. HDMI 1.4b products will continue to be tested to the 1.4b requirements. HDMI 2.1 compliance test specifications were published last year. The timeline for beginning compliance testing for HDMI 2.1 will be decided by each individual authorized testing center. 

 

To read more about the HDMI standards, check out this blog post.

 

High Standards for HDMI

December 14, 2017 at 8:00 AM

 

Becoming a certified HDMI product is no simple task. HDMI Licensing LLC. has high standards for products that claim compliance and meeting their requirements is no easy feat.

 

To be HDMI compliant, a representative sample of each licensed HDMI product or component must pass rigorous testing prior to mass production or distribution. Here’s an inside look at everything that goes in to meeting the high standards for HDMI.

 

First, the manufacturer must become an HDMI adopter. They then self-test according to the most current HDMI Compliance Test Specification. This year, HDMI 2.1 is being released and is the most current specification. The test specification has a list of testing procedures and minimum requirements for how to test each product. This testing is limited and only evaluates the product’s HDMI compliance, it is not designed to test the overall product performance.

 

Next, the manufacturer must submit the first product of each product type (i.e. cable, sink, repeater or source) to an authorized testing center (ATC) for further testing. To submit a product for testing, the manufacturer must fill out an application, submit the product, provide all operating instructions or manuals, complete a capabilities declaration form and submit any ancillary material or equipment. The product is then evaluated for a pass or fail result. If a passing result is given, it is not required to test any other products of that type. If the product fails the compliance testing, the manufacturer is given a list of areas that did not pass, so they can make changes as needed.

 

 

With this year’s release of HDMI 2.1, comes a list of new specifications that must be met by HDMI certified products. These new requirements are available to all HDMI 2.0 adopters. HDMI 2.1 features include:

 

  • ·       Higher video resolutions and faster refresh rates
  • ·       Dynamic HDR for improved depth, brightness, contrast and wider color gamuts  
  • ·       48G cables for enabling up to 48Gbps speeds for uncompressed HDMI 2.1 feature support including 8K video with HDR
  • ·       eARC to support the most advanced audio formats and enable advanced audio signal control capabilities
  • ·       Game Mode VRR with variable refresh rate
  •  

As with all HDMI specifications, compliance testing must be performed for products to meet the HDMI 2.1 standards. All HDMI 2.0 adopters will have access to the HDMI 2.1 Compliance Testing Specification. The HDMI 2.1 specification supersedes HDMI 2.0b. All HDMI 1.4b products will continue to be tested to CTS 1.4b standards. HDMI 1.4b adopters cannot also be licensed to the HDMI 2.1 specification.

 

As an HDMI Adopter, L-com offers a wide selection of HDMI certified cables and HDMI Splitters/Extenders.

 

For more information about the HDMI standards, visit www.hdmi.org.

 

© L-com, Inc. All Rights Reserved. L-com, Inc., 50 High Street, West Mill, Third Floor, Suite 30, North Andover, MA 01845