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Clairvoyante Takes Aim at High-Res Mobile Displays
[May 25, 2007]

Clairvoyante Takes Aim at High-Res Mobile Displays


TMCnet Web Editor
 
Mobile displays faces continuing challenges trying to balance the demands of low power consumption and high color clarity. Display IP company Clairvoyante has been trying to tackle those issues the past few years, its latest effort penned PenTile Mode Control technology, a set of backlight control options to statically or dynamically select various levels of power consumption and color purity.


 
According to Clairvoyante, PenTile Mode Control  technology offers an innovative solution to balance color saturation and power efficiency selectable by the user interface of mobile devices. This approach to color and power control allows display manufacturers the flexibility to develop displays for various applications that satisfy consumers' desires for feature-rich devices with extended battery life.
 
The initial features include three static modes that enable a user interface to control the amount of power reduction or color control, and one dynamic mode that uses dynamic backlight control (DBLC) to automatically analyze image content in order to provide variable power savings of 15 to 65 percent.
 
"For the first time, display manufacturers and their customers will have unprecedented flexibility to select the most appropriate balance of color purity and power reduction, putting the customer in control of optimizing the power/performance ratio that best fits their application," according to Clairvoyante president and chief executive Joel Pollack. "PenTile Mode Control technology adds yet another measure of flexibility that enables PenTile technology to continually advance mobile display design."
 
PenTile’s Power Saver Mode enables a fixed power reduction of 50 percent and is optimized to display lifelike, natural-looking colors such as full-screen video at maximum power efficiency. This mode can be selected when content is dominated by natural colors such as video, or when the battery is running low and the user needs to conserve power at the expense of some pure color appearance.
 
PenTile Pure Color Mode offers fixed 15 percent power savings and is appropriate for applications where content is dominated by bright, highly saturated colors such as web browsers or computer-generated graphics. This mode helps extend battery life of portable devices like Ultra mobile PCs and mobile Internet Devices where the appearance of saturated colors is key.
 
PenTile Outdoor Mode is ideal for optimally displaying images and text in outdoor settings with high ambient light where visibility is most important. This may enable transmissive panels to be used instead of transflective technology, where compromises are often made to appearance.
 
The Dynamic Power Optimization Mode combines the substantial power-saving properties of PenTile RGBW technology with content-dependant power savings achieved through dynamic backlight control techniques to achieve a variable power savings of 15 to 65 percent. By analyzing the color and brightness metrics of each image frame and continually adjusting the image rendering and backlight, both computer-generated graphics and video may be displayed with content-appropriate color purity at optimal power efficiency.
 
PenTile’s RGBW technology is also compatible with conventional dynamic backlight control from third parties. The technology will be incorporated into products starting the fourth quarter.
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Spencer Chin is a contributing editor for TMCnet. To see more of his articles, please visit his columnist page.
 
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