Feeds

Intel demos Panel Self-Refresh power-saving tech

DisplayPort screens store their own picture

Build a business case: developing custom apps

IDF 2011 Intel today demo'd an interesting screen-based power-conservation technology: Panel Self-Refresh (PSR), part of the Embedded DisplayPort (eDP) standard.

PSR incorporates a frame buffer into the display's own electronics, allowing it to refresh the screen's pixels directly rather than continuously requesting image data from the host device's GPU.

This means the GPU isn't being woken 60 times a second to re-send the current frame buffer's contents over the DisplayPort bus to the display.

The GPU needs only exit a low-power, sleep state when the contents of the main frame buffer changes. Even if the screen is changing 30 times a second, there's still an opportunity to keep the GPU asleep while image data is read from the display's own buffer.

The tech requires the on-screen picture to be monitored for static images. Intel demo'd it using a photo slideshow app. During picture transitions the graphics core needs be brought back to life but once the picture is no longer changing, the GPU can be allowed to stay asleep, reducing power consumption.

As long as the screen is being powered, it will continue to show the image, even if the connection to the GPU is cut. Not that that should happen in a laptop, but it clearly demonstrates the display's ability to operate without a picture source.

PSR isn't new. It was incorporated in eDP back in February 2011 when DisplayPort overseer Vesa published the eDP 1.3 specification. But even then, Vesa said the tech won't make its way into notebooks and netbooks until 2012.

Intel will be supporting the tech in its 'Ivy Bridge' processors, which connect their on-board GPU to display sub-systems over an eDP link.

Intel's PC chief, Mooly Eden, said he expects PSR to be standard on notebooks within two years. ®

Build a business case: developing custom apps

More from The Register

next story
Kate Bush: Don't make me HAVE CONTACT with your iPHONE
Can't face sea of wobbling fondle implements. What happened to lighters, eh?
The agony and ecstasy of SteamOS: WHERE ARE MY GAMES?
And yes it does need a fat HDD (or SSD, it's cool with either)
Apple takes blade to 13-inch MacBook Pro with Retina display
Shaves price, not screen on mid-2014 model
iPhone 6 flip tip slips in Aussie's clip: Apple's 'reversible USB' leaks
New plug not compatible with official Type-C, according to fresh rumors
Steve Jobs had BETTER BALLS than Atari, says Apple mouse designer
Xerox? Pff, not even in the same league as His Jobsiness
TV transport tech, part 1: From server to sofa at the touch of a button
You won't believe how much goes into today's telly tech
Apple analyst: fruity firm set to shift 75 million iPhones
We'll have some of whatever he's having please
Apple to build WORLD'S BIGGEST iStore in Dubai
It's not the size of your shiny-shiny...
prev story

Whitepapers

Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Top 10 endpoint backup mistakes
Avoid the ten endpoint backup mistakes to ensure that your critical corporate data is protected and end user productivity is improved.
Top 8 considerations to enable and simplify mobility
In this whitepaper learn how to successfully add mobile capabilities simply and cost effectively.
Rethinking backup and recovery in the modern data center
Combining intelligence, operational analytics, and automation to enable efficient, data-driven IT organizations using the HP ABR approach.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.