DSC 1.2 features native 4:2:0 and 4:2:2 coding to support up to 16 bits per color; increased compression efficiency increases support of High Dynamic Range content
SAN JOSE, Calif. – January 27, 2016 – The Video Electronics Standards Association (VESA®) today announced it has released version 1.2 of the Display Stream Compression (DSC) Standard. An extension to the feature set offered in version 1.1, DSC v1.2 was developed to support a wider range of display applications—in particular, externally connected displays such as PC monitors and televisions. A key feature of DSC v1.2 is its ability to provide native compression of the YCbCr 4:2:0 and 4:2:2 video formats commonly used in digital TVs.
Developed as an industry-wide compression standard for video interfaces that features low latency and visually lossless performance, DSC is currently integrated into standards used for embedded display interfaces within mobile systems. These include the VESA embedded DisplayPort (eDP™) Standard v1.4b and the MIPI Display Serial Interface (DSI) specification v1.2 and later versions. Since its initial introduction in April 2014, the DSC standard has achieved broad adoption in smart phones and tablets, and will be used in future notebook PCs. Examples of mobile processors that currently make use of DSC 1.1 include the NVIDIA Tegra® X1 and the Qualcomm® Snapdragon™ 820.
Dale Stolitzka, principal engineer at Samsung Display and chair of the VESA Display Stream Compression Task Group, noted, “This update to DSC greatly expands adoption opportunities for the standard, which includes within the automotive infotainment and digital TV markets. The update retains all the functionality of the prior version, while adding significant capabilities that will allow makers of a wide range of advanced displays to take advantage of DSC’s many benefits.”
The forthcoming VESA DisplayPort™ (DP) 1.4 specification will be the first DP standard to take advantage of DSC 1.2, which is backward compatible with DSC 1.1. A side-by-side comparison of the two versions can be found at http://www.vesa.org/news-events/press-kits/.
The new capabilities in DSC 1.2 will allow the standard to be utilized not only for mobile displays, but also for emerging high-definition TVs. Key features include:
“IP availability to the semiconductor industry plays a vital role in enabling this important compression standard for advanced, high-resolution displays,” said Alain Legault, VP of IP products for Hardent. “Our DSC-compliant encoder and decoder IP cores provide a low-risk, proven solution, allowing manufacturers to rapidly integrate the standard and meet their time-to-market windows.”
Added Craig Wiley, senior director of marketing for Parade Technologies and VESA board member, “The display industry is moving in exciting directions, and through the collaboration of our more than 230 member companies and liaisons with other standards organizations, VESA’s publication of DSC 1.2 enables a standardized display interface compression codec the will unleash a new level of display performance capability across multiple ecosystems. Similar to other VESA standards, DSC is available for use in display interface standards published by other organizations—further strengthening its value compared to proprietary standards that can’t match its visually lossless, low-power image compression.”