News for hackers. Stuff that matters.

A comment on Apple announces 27-inch 5K Studio Display. Parent comment

Re:Apple announces 27-inch 5K Studio Display by miohtama on Tuesday March 08, 2022 @05:42PM (#30608315)
What’s DSC?
[ Parent | on HN ]
Re:Apple announces 27-inch 5K Studio Display by detaro on Tuesday March 08, 2022 @06:12PM (#30608640)
Display Stream Compression, a lossy compression algorithm optimized for the specific use case of device-display transfers (i.e. relatively low compression ratio == very high quality that's claimed to imperceptible even if it can't run lossless, not needing to work on full frames for speed/sub-frame latency, ...)
[ Parent | on HN ]
Re:Apple announces 27-inch 5K Studio Display by gknoy on Tuesday March 08, 2022 @06:14PM (#30608661)
I didn't know either. DSC is Display Stream Compression, and has been part of the spec since 1.4. According to Wikipedia [0],

> DSC is a compression algorithm that reduces the size of the data stream by up to a 3:1 ratio.... Using DSC with HBR3 transmission rates, DisplayPort 1.4 can support 8K UHD (7680 × 4320) at 60 Hz or 4K UHD (3840 × 2160) at 120 Hz

0: https://en.wikipedia.org/wiki/DisplayPort#1.4

[ Parent | on HN ]