DisplayPort

What is DisplayPort?

DisplayPort is a digital interface standard. It was approved by the Video Electronics Standards Association (VESA) in April 2007. It is a license-free, royalty-free, digital audio/video connector.

DisplayPort’s primary function is to send video and audio signals from a computer to a computer monitor or a home theater system. It allows the user to easily make a direct connection from a computer to an entertainment center system, while increasing audio and video performance.

DisplayPort Technical Specifications

8B/10B

8.64 Gbit/s forward link channel supports high resolution monitors of:

  • up to 2560×1600 with single cable; signal degradation begins after 10 feet
  • data transmission of up to 2.7 GHz
  • symbol rate of up to 4 lanes, 8B/10B modulation
  • color depth of 6, 8, 10, 12 and 16 bits per component
  • full transmission of signals over a cable length of 3 meters or 10 feet
  • 128-bit Advance Inscription Standard
  • DisplayPort Content Protection (DPC)
  • High-band with Digital Protection content from version 1.1 onwards

It supports both external (box-to-box) and internal (laptop LCD panel) display connections.

The DisplayPort connector supports blind connection by feeling.

DisplayPort’s Competitors

  • HDMI

features HDCP copy protection and defacto digital connection for high-definition consumer electronics devices

  • Unified Display Interface

an inexpensive option, which is compatible with both HDMI and DVI

DisplayPort’s Supporters

Several companies have expressed their support for DisplayPort, some of which are: Dell, Genesis Microchip, Intel, Lenovo, Philips, Samsung, Analogix, NVIDIA, ASRock, Hosiden Corporation, Hewlett-Packard, Integrated Device Technology, JAE, Luxtera, Parade,
Technologies, Molex, NXP Semiconductors, Palit Microsystems, Quantum Data, Texas Instruments, and Tyco Electronics.

DisplayPort’s Advantages Over HDMI (High Definition Multimedia Interface)

HDMI is considered to be one of the industry’s top standards in transferring high quality video and audio from computers and high definition DVD players to computer monitors and TVs. However, manufacturers are required to pay licensing fees before it can be used. DisplayPort, on the other hand, is license-free, which makes it more attractive to large computer and technology manufacturers.

DisplayPort’s Advantages Over DVI (Digital Video Interface)

DisplayPort allows multiple video streams over a single physical connection, and enables the easy expansion of the standard set by the micro-packet protocol. It also enables the use of cheaper and slimmer displays by directly driving the display panels and eliminating control circuits.

DisplayPort has backward compatibility with DVI/HDMI through a single link, while DVI/HDMI needs a dual link, and analog VGA uses active converter adapters. It is also compatible with both RGB and YcbCr color spaces.

DisplayPort comes with a multi-purpose auxiliary channel, which can be used for touch-panel data, USB links, cameras, microphones, and such. It also has an embedded clock which goes through fewer lanes, slimmer cables, and a smaller connector that does not use thumbscrews.