As a result the battery runs down much sooner than if the brightness and power were actively and intelligently managed automatically, as they should be.
We outline how to do that next…. Right now the user interface for brightness controls is completely backwards — the Light Sensor measures the ambient light and the smartphone or HDTV adjusts the screen brightness based on some ad hoc and mysterious algorithm based on an earlier user setting of a brightness control.
The solution is very simple — do it in the opposite way — the consumer initially adjusts the screen brightness manually to whatever they want for the current ambient lighting.
The Ambient Light Sensor then measures this light level. The value is recorded and used to interpolate the screen brightness whenever the ambient lighting changes. In principle, only two such user settings are needed to train the Automatic Brightness for a linear interpolation as shown in Figure 1.
There is one more thing… to make this work smartphones and TVs need a convenient brightness control to tweak and train the Automatic Brightness. Every TV and smartphone in the solar system has a convenient Volume Control but in most cases you have to go down a couple of menu levels to get to a cumbersome Brightness Control.
This same suggestion applies to TV remote controls — use a shift button to temporarily convert the Volume Control buttons into Brightness Control buttons. Every display needs a convenient external Brightness Control — not buried under several levels of menus. The above is guaranteed to work nicely and conveniently for all consumers, solve Brightness Gate , maximize viewing comfort, screen readability, energy efficiency and battery run time all together.
For HDTVs it will lower your electric bill and even make a dent in oil imports… I hope the manufacturers are listening…. Raymond Soneira is President of DisplayMate Technologies Corporation of Amherst, New Hampshire, which produces video calibration, evaluation, and diagnostic products for consumers, technicians, and manufacturers. See www. He is a research scientist with a career that spans physics, computer science, and television system design.
Soneira obtained his Ph. He has authored over 35 research articles in scientific journals in physics and computer science, including Scientific American. If you have any comments or questions about the article, you can contact him at dtso. DisplayMate Technologies specializes in advanced mathematical display optimizations and precision quantitative and analytical scientific display manufacturer calibrations to deliver outstanding image and picture quality and accuracy while increasing the effective visual Contrast Ratio of the display and producing a higher calibrated brightness than is achievable with traditional calibration methods.
This also decreases display power requirements and increases the battery run time in mobile displays. Our scientific optimizations can make lower cost displays look almost as good as more expensive higher performance panels.
If you are a display or product manufacturer and want to turn a standard panel into a spectacular one Contact DisplayMate Technologies to learn more. Raymond M. Product Information.
General Information. Display Information. Special Information. Customer Information. Company Information. About Us Contact Us. If you have adjusted the brightness in a third-party app such as a video player or web browser , your phone will stop adjusting the brightness automatically according to ambient light levels, as the third-party app is now in charge of brightness control. Exit the third-party app and auto-brightness will take effect again.
It is recommended that you use a transparent protective film. A colored protective film will cause the proximity sensor to be blocked, leading to the automatic brightness function not to work properly. Update your phone to the latest system version and try again. Note: This option will reset all system settings without deleting any data or media files.
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