Tag Archives: 4k

KVM Matrix Extension System Supports 4K60 Over a Single Cable

Extend 4K resolutions at 60Hz over a single fibre cable in a point-to point extension or multipoint-to-multipoint matrix configuration for the highest onscreen resolutions in post-production suites. DKM FX 4K60 Interface Cards support 4K60 in full, 8-bit color depth.

More production suites are deploying 4K monitors for viewing, live production, and post production. For example, the Black Box DKM solution is being deployed at fileCAST Media GmbH. The manufacturer of the new LiveLogging solution for its Online Media Library (OML) platform is using Black Box technology to extend signals and connect to live production multi-feed environments. The purpose is to tag media content from multiple sources during a live event. This will enable content owners to offer valuable media assets in a searchable format in near real time.

4K in post-production editing suites will enhance an editor’s ability to see how the finished product will appear. 4K extension at 60 Hz has been challenging in the past because 4K requires higher bandwidth. The DKM FX 4K60 cards can overcome this challenge because the system also uses high-speed interface cards to support high-bandwidth signals. In addition, control surfaces for post-production editing that use high-speed USB, such as DiVinci Resolve, can be deployed using these interface cards.

The DKM FX system is flexible, scalable, and highly reliable. Video standards supported by interface cards in the modular housing include DVI-D up to 2560 x 1600; HDMI up to 2560 x 1440; and DisplayPort 1.2 (4:4:4) resolutions up to 4K.

The DKM FX Modular Housing frames come in 2-, 4-, or 6-slot chassis with optional redundant power. The 21-slot frame is 1U for rackmounting in a server room or machine room. Fibre cable supports distances up 1000 metres over multimode fibre or 10 kilometres over single-mode fibre, which means editing and post-production suites can be in different buildings in a large enterprise solution.

For more information, call our application engineers at 00800-2255 2269 or use our online DKM configurator to plan your high-performance KVM extensions system.

Related Links:
Black Box Whitepaper: 4K video – piecing together the puzzle

DisplayPort interface for 4K, explained

DisplayPort is the most recent digital video interface to be developed for commercial use. It is a standard for PCs.

The DisplayPort standard was designed as a replacement for DVI connectors on computer hardware. The connector is smaller and screwless for easier installation. The connector still has a locking mechanism to hold it in place, addressing a weakness of the HDMI connector. It is similar in specifications to HDMI, but it is more common for computers than for televisions.

DisplayPort uses a packet type of interface, just like an IP network does. The network-like design means a single connection can send multiple streams, so a single DisplayPort port can connect to more than one display.

DisplayPort uses very high speeds, enabled by the packet-type delivery that is implemented through chipsets. One can think of it as a high-speed network for digital video. DisplayPort uses a serial interface with up to four main data lanes that can carry multiplexed video and audio data. Each data lane supports a raw data rate of 1.62 Gbps, 2.7 Gbps, or 5.4 Gbps (DisplayPort 1.2 or later). Additionally, unlike with DVI, an audio channel is supported — up to eight channels of 16- or 24-bit at 48 KHz, 96 KHz, or 192 KHz.

DisplayPort and DVI
DisplayPort and DVI use different signal processing methods, but converting between the two can be done with adapters. Some DisplayPort ports have internal components to make them passively compatible with DVI signals, but this is not a DisplayPort requirement. This is known as Dual Mode, or DP++. It appears that DisplayPort is converted to DVI, but the hardware outputs a DVI signal through a DisplayPort port. If the hardware in use can’t output the DVI signal, then a DisplayPort-to-DVI adapter won’t operate. Users should look for the DP++ symbol.

DVI offers no audio support, which gives another advantage to DisplayPort. An additional advantage for DisplayPort is that packetizing data lowers demand on bandwidth. DVI uses separate data channels for each color, requiring high bandwidth all the time.

DisplayPort and HDMI
Since HDMI technology and DVI use the same signal technology, HDMI and DisplayPort have similar compatibility issues noted already.

HDMI is the digital standard targeted to home theater, and DisplayPort was developed for use with computer electronics. However, feature-wise, DisplayPort is very similar to HDMI, including the inclusion of the HDCP content-protection standard.

Some differences include:

  • DisplayPort has a maximum bandwidth that is larger than the maximum bandwidth of HDMI (10.8 Gbit/sec, compared to HDMI at 10.2).
  • DisplayPort supports DPCP (DisplayPort Content Protection) standard in addition to HDCP.
  • DisplayPort is an open standard, available to all manufacturers at no cost; HDMI is licensed, which raises costs.
  • DisplayPort supports resolutions up to 4K.

For additional information on 4K-ready DisplayPort solutions, visit www.black-box.eu/4K.