Domain: vesa.org
Stories and comments across the archive that link to vesa.org.
Stories · 5
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New DisplayPort 1.4 Standard Can Drive 8K Monitors Over A USB Type-C Cable (arstechnica.com)
AmiMoJo writes: VESA has finalized and released the DisplayPort 1.4 spec, which can drive 60Hz 8K displays and supports HDR color modes at 5K and 8K. The physical interface used to carry DisplayPort data -- High Bit Rate 3 (HBR3), which provides 8.1Gbps of bandwidth per lane -- is still the same as it was in DisplayPort 1.3. The new standard drives higher-resolution displays with better color support using Display Stream Compression (DSC), a "visually lossless" form of compression that VESA says "enables up to [a] 3:1 compression ratio." This data compression, among other things, allows DisplayPort 1.4 to drive 60Hz 8K displays and 120Hz 4K displays with HDR "deep color" over both DisplayPort and USB Type-C cables. USB Type-C cables can provide a USB 3.0 data connection, too. -
VESA Embedded DisplayPort 1.4a Paves Way For 8K Displays, Longer Battery Life
MojoKid writes: The VESA standards organization has published the eDP v1.4a specification (Embedded DisplayPort) that has some important new features for device manufacturers as they bump up mobile device displays into the 4K category and start looking towards even higher resolutions. eDP v1.4a will be able to support 8K displays, thanks to a segmented panel architecture known as Multi-SST Operation (MSO). A display with this architecture is broken into two or four segments, each of which supports HBR3 link rates of 8.1 Gbps. The updated eDP spec also includes VESA's Display Stream Compression (DSC) standard v1.1, which can improve battery life in mobile devices. In another effort to conserve battery power, VESA has tweaked its Panel Self Refresh (PSR) feature, which saves power by letting GPUs update portions of a display instead of the entire screen. -
New Display Interface Standard in the Works
virgil_disgr4ce writes "The VESA standards group is designing a new display interface standard to replace both VGA and DVI. The new standard promises better bandwidth and interoperability for a ' broad application within computer monitors, TV displays, projectors, PCs and other sources of image content.'" -
Freeing the Specs?
rhost89 asks: "I'm a hobbyist OS Developer and am appalled at the obscurity and availability of some of the specs sheets for various device groups, specifically video cards. If we want to write video drivers we are almost forced into writing for VESA or for cards that were obsolete 5 years ago, meaning high resolutions that run like a dog, or blazingly fast at 640x480 at 256 colors. Most manufactures hold on to their engineering spec sheets like pirate holds on to their gold doubloons (NVIDIA, and ATI come to mind, here). Other manufactures are quite happy to provide the specs for their devices, such as Intel and Matrox. My question is what can hobbyist OS developers do to get these coveted spec sheets. Would petitions help or would it be an exercise in futility. What else can we do to free this valuable information besides reverse engineering the manufactures binaries?" It's funny how the more things have changed over the last five years, the more things stay the same. -
The Bubble
By the end of this year, there will be 7 somewhat incompatible versions of Windows. In addition to the current four x86 vendors there will many more, among which Imes, CPU Tech, Metaflow, Rise, Transmeta ( ? ), and Exponential (??). While new hardware ages computers before they are sold, M$'s bloatware obsoletes them within a year. To compensate, consumers are turning to cheap "disposable" computers. But this trend driven by Microsoft's feature-adding strategy, risks back-firing. As component cost is driven down, and specialised vendors disappear, more application specific devices will emerge. Just like Cyrix's MediaGX, they will be geared towards providing the maximum bang for the buck in a specific environment. This will slowly push the single-OS-for-all paradigm to the side. Indeed, as hardware cost goes down, the direct and indirect price of using Microsoft increases: Windows/Office costs money, it also costs a very powerful environment: memory, harddrive, etc. And if computers are application specific, the choice of an OS becomes irrelevant, and each new feature is clearly costed.