DisplayLink's network display technology has been developed specifically for applications where users need to connect a computer, smartphone or tablet to a display across a standard wired or wireless connection such as USB, Ethernet, WiFi or WiGig. Its latest DL-6000 range of chipsets supports dual 4Kp60 displays with latency that is indiscernible from a direct connected display, while maintaining very high image quality, even in fast-moving scenes.
With the recent explosion of interest in Virtual Reality, many of our customers and partners have approached us to see how we could help them solve the problem of eliminating the tethered cable that runs between the Head Mounted Display (HMD) and gaming PC or console. This is an obvious restriction on unimpeded movement of the user in the virtual environment.
Solutions to this include elaborate ceiling mounted cable tethers and backpack gaming PCs, but we asked ourselves: "How can DisplayLink do this wirelessly?"
This is a big challenge since the video data rate on first generation VR HMDs is already four times greater than that of a high definition TV and too great for any wireless link unless the video is compressed. However, most standard compression systems such as MPEG create a delay in the video stream, and if the delay through the system (which includes sensing head movement and generating the CGI scene) becomes greater than 20ms, the user will start to feel motion sickness.
DisplayLink's solution combines our unique approach to video compression with deep technical partnerships with leading wireless networking companies. Despite the high video data rates demanded by VR applications, DisplayLink's compression system can maintain the resolution, quality, and framerate of the VR display but with no discernible increase in latency compared to a direct connected display.
First-generation VR HMDs such as Vive and Rift support 1.5 megapixels per eye, for a data rate of about 6Gbps. DisplayLink's current chipsets supports 4K resolution displays at up to 120 frames per second equivalent to 24 Gbps. Combining massive video data capability with very low latency means DisplayLink's chipsets are ideally suited to VR head mounted displays.