Apple patent is for backlight control of an electronic device
TweetFollow Us on Twitter

Apple patent is for backlight control of an electronic device



An Apple patent (number 20120218239) for backlight control of an electronic device has appeared at the U.S. Patent & Trademark Office.

Embodiments are provided in the patent that may be utilized to eliminate stray light emissions from an LED while ambient light is being sensed. As such, dynamic backlight control systems for use with an electronic display are presented including: an ambient light sensor for sensing ambient light intensity; a backlight for illuminating the electronic display; a switch for controlling the backlight, the switch configured to set a backlight condition to ON or OFF in response to a backlight-off frequency such that the ambient light sensor senses the ambient light intensity in the absence of the backlight; a logic module for determining a backlight level in response to the ambient light intensity; and a backlight control circuit for adjusting the backlight to the backlight level in response to the ambient light intensity.

Here's Apple's background on the invention: "Portable electronic devices permeate everyday life in modem technological society. From portable information management systems to portable entertainment systems, the demand for new devices having more robust features and reliability continues to grow. One area that is critical to the success of an innovative electronic device is electronic display configuration and management. As may be appreciated, electronic displays utilized in portable electronic devices may be subject to a variety of environmental factors such as ambient light extremes, which may adversely affect a user's viewing experience.

"For example, when an electronic device is carried from indoors to direct sunlight, the devices electronic display may be too dark to read until the display compensates for the ambient light change. Conversely, when an electronic device is carried from direct sunlight to indoors, the device's electronic display may be too bright to view until the display compensates for the ambient light change.

"To address this problem, some electronic devices utilize an ambient light sensor in combination with an electronic display. The purpose of an ambient light sensor is to sense ambient light intensity. Sensed ambient light intensity generates data that may then be used to adjust electronic display brightness ... As may be appreciated, backlight control may be utilized with an electronic display to adjust backlight levels (i.e. brightness) ... As may be appreciated, a stepped increase in backlight level may provide at least some response to changing ambient light conditions. However, this technique represents a compromise. That is, the coarse granularity in backlight control often results in a backlight level that is too high or too low for a given ambient light condition. A finer granularity of backlight control may provide backlight levels that more closely match an ambient light condition and thus, may enhance a user's viewing experience.

"n some conventional electronic devices, an ambient light sensor may be isolated from the devices electronic display in order to avoid stray light emissions from the display. However, in other electronic devices, an ambient light sensor may be co-located with the device's electronic display in order to achieve, for example, a smaller form factor. In those examples, light emissions from the electronic display may interfere with the ambient light sensor.

"Thus, for example, ambient light intensity may be incorrectly read as too high because of contributing stray light emissions from the electronic display resulting in an inaccurate backlight level. As such, it may be advantageous to eliminate stray light emissions while an ambient light sensor is operating."

The inventors are Wei Yao and Wei Chen.

 
AAPL
$524.75
Apple Inc.
-6.95
GOOG
$526.94
Google Inc.
-7.87
MSFT
$39.69
Microsoft Corpora
-0.30
MacNews Search:
Community Search:

Latest Forum Discussions

See All
view counter

view counter
view counter
view counter
view counter
view counter
view counter

Suited Up (Games)
Suited Up 1.0 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0 (iTunes) Description: Suited Up is a difficult, one-touch platformer that requires players to visualize each jump.The controls in Suited Up are simple, yet difficult to master. Tap where you wish the top of the jump arc to be and the suit does the rest.... | Read more »
MyTP One Mountain - Ski, Freeski and Sno...
MyTP One Mountain - Ski, Freeski and Snowboard 1.0.0 Device: iOS Universal Category: Games Price: $.99, Version: 1.0.0 (iTunes) Description: As real snow is melting away in the snow parks around the northern hemisphere, it's now time to show your skills in „MyTP One Mountain - Ski, Freeski and Snowboard" - the latest and greatest... | Read more »
Tank Battle: East Front 1943 (Games)
Tank Battle: East Front 1943 1.0 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0 (iTunes) Description: Tank Battle: East Front 1943 is the third in the successful ‘Tank Battle: East Front’ series of games for iPhone and iPad, a game of tactical combat on the Russian Front during 1943. Fight as the Germans or the... | Read more »
Third Eye Crime: Act 1 (Games)
Third Eye Crime: Act 1 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: "You have to see Third Eye Crime" Touch Arcade"Third Eye Crime is unlike anything currently available for mobile devices in style and gameplay." Blast Magazine"The game looks like a Dick Tracy Sunday strip in motion"... | Read more »
Wayward Souls (Games)
Wayward Souls 1.00 Device: iOS Universal Category: Games Price: $4.99, Version: 1.00 (iTunes) Description: **Buy the game now at an introductory sale price of $4.99 USD. Every time we do a big content update, we will raise the price by a dollar. We plan to do several updates.** | Read more »
Leo's Fortune (Games)
Leo's Fortune 1.0.2 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0.2 (iTunes) Description: Leo’s Fortune is a platform adventure game where you hunt down the cunning and mysterious thief that stole your gold. Beautifully hand-crafted levels bring the story of Leo to life in this epic adventure. | Read more »
iOOTP Baseball 2014 Edition Review
iOOTP Baseball 2014 Edition Review By Carter Dotson on April 23rd, 2014 Our Rating: :: SOLID CONTRACTUniversal App - Designed for iPhone and iPad The long-running baseball simulator returns to mobile with a much-improved entry in the series.   | Read more »
148Apps Live on Twitch: Soccer Rally 2 w...
Soccer Rally 2 from IceFlame Games officially releases on Thursday, bringing perhaps the most realistic car soccer action to the App Store since the original released. David Deacon of IceFlame Games will join us on our Twitch channel to talk about the game, how they tried to improve it over the original, and perhaps playing their game in real life... | Read more »
NightCap Pro Review
NightCap Pro Review By Jennifer Allen on April 23rd, 2014 Our Rating: :: NIGHT TIME SNAPPINGUniversal App - Designed for iPhone and iPad Taking photos in low light conditions has always been tricky, but NightCap Pro has just made it easier.   | Read more »
Plague Inc. has Mutated Yet Again – We’r...
Plague Inc. has Mutated Yet Again – We’re All Doomed Even More than Usual Posted by Rob Rich on April 23rd, 2014 [ permalink ] Universal App - Designed for iPhone and iPad | Read more »
All contents are Copyright 1984-2010 by Xplain Corporation. All rights reserved. Theme designed by Icreon.