System and method for automatic adjustment of backlighting, contrast and color in a data processing system
AssigneeInternational Business Machines Corporation
InventorRabindranath Dutta
Life of this patent
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Abstract
Within a data processing device, such as a personal digital assistant, the backlight and contrast of a display can be automatically adjusted in response to lighting conditions monitored by a light meter connected to this system. As the device monitors a change in the light condition within which the device is being utilized, a process will modify whether the backlight will turn on or off and what value of contrast will be used. Likewise, a miniature video camera can also be attached to the device and its input used to adjust color values of images displayed on the device, including selected various color schemes to be used within various lighting conditions.
Claims29
A data processing system comprising:
- a display screen for displaying information;
- an apparatus for monitoring relative lighting conditions of an environment within which the data processing system is operated;
- and
- modifying a display characteristic of the display screen as a function of the relative lighting conditions monitored by the apparatus.
A method for adjusting viewability of information on a data processing system display screen, comprising the steps of:
- monitoring a relative lighting condition of an environment in which the data processing system is being operated;
- and
- automatically adjusting a display characteristic of the display screen in response to the monitored relative lighting condition.
A data processing system comprising:
- a display screen;
- circuitry for adjusting a contrast level for images displayed on the display screen;
- a light meter;
- a light meter register storing a value representing a relative illumination of lighting of an environment in which the data processing system resides as monitored by the light meter;
- and
- circuitry for automatically signalling the adjusting circuitry to modify the contrast level as a function of the light meter register value.
A data processing system comprising:
- a display screen;
- a light meter;
- a light meter register storing a value representing a relative illumination of lighting of an environment in which the data processing system resides as monitored by the light meter;
- a backlight for illuminating the display screen;
- and
- circuitry for automatically switching the backlight on or off as a function of the light meter register value.
Dependencies are inferred from the claim text.