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DisplayPort

Table of Contents

  1. Definition
  2. How it Works
  3. Features
  4. Benefits
  5. Enabling Technologies
  6. Rambus Technologies

What is DisplayPort?

DisplayPort is a digital display interface developed by the Video Electronics Standards Association (VESA) to transmit high-resolution video and audio from a source device (like a computer) to a display (such as a monitor). Unlike older standards like VGA or DVI, DisplayPort uses packetized data transmission similar to Ethernet, USB, and PCI Express, allowing for higher performance and scalability.

How DisplayPort works

DisplayPort transmits data using a high-speed serial interface. It supports both internal and external display connections and can carry video, audio, and other forms of data over a single cable. The interface uses a differential signaling method over a small number of wires, which helps reduce electromagnetic interference and allows for longer cable lengths without signal degradation.

What are the key features of DisplayPort?

  • High Bandwidth: Supports up to 80 Gbps with DisplayPort 2.1, enabling 8K resolution at 60Hz or multiple 4K displays.
  • Multi-Stream Transport (MST): Allows multiple displays to be connected through a single cable using daisy-chaining.
  • Adaptive Sync: Reduces screen tearing and stuttering in gaming and video playback.
  • Backward Compatibility: Compatible with HDMI, DVI, and VGA through passive and active adapters.
  • Compact Connector: Smaller than HDMI, making it ideal for laptops and compact devices.
 

What are the benefits of DisplayPort?

  • Superior Video Quality: Supports higher resolutions and refresh rates compared to HDMI in many use cases.
  • Reduced Cable Clutter: Combines audio, video, and data in one cable.
  • Open Standard: Royalty-free for manufacturers, encouraging widespread adoption.

Enabling Technologies

  • Auxiliary Channel: Used for device control and management.
  • Display Stream Compression (DSC): A visually lossless compression standard that enables higher resolutions and refresh rates.
  • Forward Error Correction (FEC): Ensures data integrity during transmission.
 

Rambus Technologies and DisplayPort

Rambus contributes to the DisplayPort ecosystem through its high-speed interface IP solutions. These include IP cores that support DisplayPort 1.4 standards, enabling robust and efficient data transmission for high-performance displays. Rambus’s IP offerings are designed to meet the stringent requirements of modern display applications, including low power consumption and high data throughput. To see Rambus DisplayPort solutions, click here.

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