VESA introduced the first Display Stream Compression (DSC) standard in 2014 and it quickly became the industry standard for data compression across the display interface. DSC was the first to offer a low latency, low complexity codec expressly designed for this purpose. DSC 1.1 has been incorporated in the VESA Embedded DisplayPort (eDP) and MIPI® DSI embedded mobile interface standards, and DSC 1.2a into the DisplayPort and HDMI® external video interface standards. The latest VESA Display Compression-M (VDC-M) standard has also been adopted into the MIPI DSI standard.
For mobile applications, DSC 1.1 and VDC-M mainly serve to reduce the video interface data rate, which reduces system power, prolongs battery life, and reduces interconnects to enable sleeker designs. For external display interfaces, DSC 1.2a extends resolution across existing connectors and cables, enabling 8K video and legacy support from the same connection.
To assure visually lossless performance, VESA’s display interface compression standards are rigorously tested for subjective image quality using a diverse group of test subjects. Test images and a summary of test results will be available from VESA in the near future.