DisplayPort 1.2 to carry 3D, mini port
updated 09:35 am EST, Tue January 13, 2009
DisplayPort 1 2 Spec
Display standards group VESA has revealed early details of DisplayPort 1.2, the next generation of its interface for computer screens. The technology doubles the amount of available bandwidth and lets the format produce images better than either the current 1.1 standard or dual-link DVI. At a minimum, the technology would allow a near-4K resolution of 3840x2160 at 60 frames per second and more advanced 30-bit color; the current specification is limited to 2560x1600 at the same quality.
The advancement will also allow the extra bandwidth to be used for either a faster image or multiple images. It could be used for 120 frames per second images at 1080p and reduce the loss of detail in fast movement, similar to modern 120Hz HDTVs; that same speed could also be used to maintain two separate images in a stereoscopic 3D effect for displays like the ViewSonic FuHzion and NVIDIA's matching GeForce 3D Vision glasses. In 2D, the bandwidth could be split into daisy-chained displays and include as many as four 1920x1200 screens or two 2560x1600 examples.
Version 1.2 should also make DisplayPort more practical for notebooks and is expected to use Apple's Mini DisplayPort as the official standard, shrinking the connector to provide more space. The output format is already being made available by Apple under a free license but would now be officially encouraged for use by the VESA group.
Confirmation of Apple's participation and the full standard's specifications should be published in mid-2009; devices using 1.2 should be available shortly afterwards.
TAGS :
MacBook, peripherals, digital imaging, NVIDIA, GeForce, DisplayPort, ViewSonic, Apple, FuHzion
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120 Hz
Displays capable of 120 Hz (or 240 Hz) don't necessarily display additional frames video. The increased "refresh" rates were introduced to mitigate the lag in pixel response. While there are some manufacturers that do repeat frames with the higher refresh rates, these still do not provide "new" data to the screen. Typical video rates are still 24/30/60 with variations of interlaced and progressive fields. All this to say higher refresh rates and improvement of detail in fast movement scenes are not necessarily correlated.