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 In regards to earlier HDMI specifications, HDMI 2.1 will superceded 2.0b and will continue to refernce and rely upon the 1.4b specification.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.

 

HDMI & DVI - Your Questions Answered

October 5, 2017 at 8:00 AM

 

HDMI and DVI cables are the two most popular video cables used today. Both HDMI and DVI far outperform traditional VGA cables cables that only transmit analog video signals. These digital interconnects are used to link everything from desktop computers and LCD monitors to HDTV’s and entertainment sysyems.

 

DVI is commonly used to connect computers to monitors. They are the most similar to traditional VGA with 24 pins that support analog and digital video. DVI can stream up to 1920x1200 HD video pixels, or up to 2560x1600 pixels using dual-link DVI technology. If the DVI cable or port does not have all 24 pins, it is designed for lower resolution devices, but as long as all the pins are accounted for, it should be able to support the maximum resolution. One downfall of DVI is that it doesn’t support HDCP encryption by default, which means you may not be able to play full HD Blu-rays or other HD content if your harware only includes DVI ports.

 

HDMI is the standard cable used on newer HDTVs, Blu-ray players, Apple TVs, computers and many other video devices. HDMI cables and ports are easy to use and connect with no pins to align, it’s a simple plug and play connection similar to USB. These cables can stream both digital video and audio at the same time. They support up to 1920x1200 HD video and 8 channel audio, as well as HDCP for the newest HD content. HDMI is the first industry supported, uncompressed, all digital audio/video interface and is backwards compatible with DVI-D.

 

 

Still have questions? Here are some of the most frequently asked questions our support team gets asked about HDMI and DVI:

 

 -  What is the maximum length for a DVI cable?

  •    A DVI-D signal can travel 5 meters over a single cable. For distances longer than 5 meters, a DVI extender/repeater is needed.

 

 -  What is the maximum length for an HDMI cable?

  •    A HDMI signal can travel 5 meters over a single 28 AWG cable. A HDMI extender/repeater is needed for distances longer than 5    meters.

 

 -  When using a long HDMI cable, the monitor display is blank or the resolution looks bad. Why?

  •   Currently, HDMI cables up to 5 meters in length will operate properly. If the cable is longer than 5 meters, the signal begins to       degrade and a signal extender is needed.

 

 -  Can I get a HDMI to DVI adaptor?

  •   HDMI is only compatible with single-link DVI-D and single-link DVI-I. It is not compatible with DVI-A, dual-link DVI-D or dual-link      DVI-I, the adaptors will plug-in but will not work for these formats.

 

 -  Can I get a HDMI to VGA adaptor?

  •   No, HDMI is not compatible with VGA.

 

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Video Blog- L-com's Toughest Cable Field Test

November 3, 2016 at 8:00 AM

 

Have you ever wanted to test your cables and really push them to the limit? If so, we have a video you MUST watch. We wanted to see just how much abuse our metal armored cables could endure, so we put them through our toughest test ever.

 

Our series of metal armored cables are capable of withstanding the harshest environments and are specifically designed for outdoor, industrial and military applications. Rugged metal armor protects the cable from damage and provides up to 1,500 pounds per square inch (PSI) of crush resistance. The metal jacket also secures the cable from dust, oil, moisture and UV damage. These cables can be used in a variety of industrial applications including factory automation, manufacturing and chemical or petroleum processing networks.

 

Our metal armored cables are currently available off-the-shelf in USB, DVI, HDMI, Ethernet (RJ45) and D-Subminiature styles. Plastic armored cable assemblies with up to 800 PSI of crush resistance are also available. In addition to our extensive off-the-shelf armored cable offering, we can also design and manufacture armored cables to your specifications.

 

Now, check out the video to watch our field test and see just how tough our armored cables are.

 

 

For more videos, tips and tutorials, click here.

 

Engineers’ Choice

October 13, 2016 at 8:00 AM

 

We depend on our engineers for their innovative ideas. We asked them what topic, technology or trend they thought we should feature in this weeks post. Our engineers’ choice: USB Type-C connectors. Here is an inside look at the connectors that got our enigneers’ stamp of approval.

 

We all love using USB. The plug-and-play interface makes it easy to connect and charge our devices. But it can be aggravating to figure out which USB cord goes with which device, and then which end plugs in where. Forutnately, our prayers have been answered and the technology gods have given us Type-C connectors.

 

USB Type-C is a tiny connector that boasts fast speeds, more power handling capabilities and a simpler, sleeker design.

 

The smaller, slimmer USB Type-C is a single connnector that can be used on all devices. Designed to replace both full-sized USB connectors as well as micro-USB connectors, it is tailored to fit mobile devices, yet powerful enough to be used with laptops and tablets. Whether you’re connecting an external peripheral to your laptop or charging your smartphone, Type-C connectors provide one cable small enough and powerful enough to do it all.

 

The Type-C connector has a simple, reversible design that makes using USB easier than ever. Completely reversible plug orientation and cable direction eliminate the guess work and frustration of not knowing which end is up when plugging in your USB devices.

 

Made for SUPERSPEED+ USB 3.1, Type-C connectors boast lightning speeds of up to 10 Gbps. They also support a vareity of different protocols that, with an adapter, allow output of HDMI, VGA, DisplayPort and other types of technologies from a single USB port. Type-C connectors are designed to provide scalable power and performance to adapt to whatever your future needs may be.

 

Type-C connectors are also made to support  USB Power Delivery (PD). Currently, a USB 2.0 connection provides up to 2.5 Watts of power, that’s enough to charge your phone, but not your laptop. With USB PD, the power delivery is increased to up to 100 Watts, and the power is bi-directional so it can be sent or received. That means that as long as the device and cable support USB PD, you can use a Type-C connector to charge devices from one another and possibly eliminate the need for a separate laptop charging cord.

 

Though USB technology is backward compatible, Type-C connectors are not, so we will continue to see devices and cords with both Type-A and Type-C connectors. Type-C connectors have been integrated into an increasing number of devices over the past year, they are now found on Google’s Chromebook Pixel and Apple’s MacBook and in the furture they may even replace Lightning connectors on iPads and iPhones.

 

For more information on Type-C connectors and USB 3.1, check out our blog post USB 3.1 – Fasten Your Seatbelts

 

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