# US 2009/0262128 A1 · Dynamic brightness range for portable computer displays based on ambient conditions

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- Number: US 2009/0262128 A1
- Document ID: US20090262128A1
- Status: Published application
- Kind: A1
- Application number: 12/429,068
- Filed: 2009-04-23
- Published: 2009-10-22
- Earliest claimed: 2001-08-29
- Assignees: Palm, Inc.
- Inventors: Shawn R. Gettemy
- Web page: https://patentgrep.com/patent/US20090262128A1

## CPC

- G09G 3/22: using controlled light sources
- G09G 3/3406: {Control of illumination source (illumination devices structurally associated with liquid crystal cells G02F1/1336)}
- G09G 3/3208: organic, e.g. using organic light-emitting diodes [OLED]
- G09G 2300/0456: with a reflective area and a transmissive area combined in one pixel, such as in transflectance pixels
- G09G 2320/043: Preventing or counteracting the effects of ageing
- G09G 2320/0626: for control of overall brightness
- G09G 2360/144: the light being ambient light
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)

## Abstract

A portable computer system that comprises dynamically adjustable brightness range settings and brightness control for providing improved user readability and prolonged component lifetime of the display screen. The main processor can change the range settings based on ambient light conditions or the user can perform the changes. The brightness level of the display changes according to a user selected setting within the range selected. The time required to implement the brightness change can be set to a value which can be configured by the user.

## Claims

### Claim at position 1

1-29. (canceled)

### Claim 30

A method of controlling a display, said method comprising:
receiving ambient light information;
determining a value for an image quality setting for said display based on said ambient light information and a user preference; and
adjusting said image quality setting to said value.

### Claim 31 (depends on 30)

The method as recited in claim 30 further comprising performing said adjusting over a specified time period.

### Claim 32 (depends on 30)

The method as recited in claim 30 further comprising receiving said user preference.

### Claim 33 (depends on 30)

The method as recited in claim 30 further comprising changing said user preference.

### Claim 34 (depends on 30)

The method as recited in claim 30 wherein said image quality setting comprises a brightness setting.

### Claim 35 (depends on 30)

The method as recited in claim 30 further comprising displaying said image quality setting.

### Claim 36 (depends on 35)

The method as recited in claim 35 wherein said displaying comprises:
displaying a slider.

### Claim 37

A method of controlling a display, said method comprising:
detecting a change in ambient light;
determining a value for an image quality setting for said display based on said detected change in ambient light and a user preference; and
adjusting said image quality setting to said value.

### Claim 38 (depends on 37)

The method as recited in claim 37 further comprising performing said adjusting over a specified time period.

### Claim 39 (depends on 37)

The method as recited in claim 37 further comprising receiving said user preference.

### Claim 40 (depends on 37)

The method as recited in claim 37 further comprising changing said user preference.

### Claim 41 (depends on 37)

The method as recited in claim 37 wherein said image quality setting comprises a brightness setting.

### Claim 42 (depends on 37)

The method as recited in claim 37 further comprising displaying said image quality setting.

### Claim 43 (depends on 42)

The method as recited in claim 42 wherein said displaying comprises:
displaying a slider.

### Claim 44

A device comprising:
a sensor operable to detect ambient light;
a display including an image quality setting; and
a controller operative to determine a value for said image quality setting based on said detected ambient light and a user preference, and wherein said controller is operative to adjust said image quality setting to said value.

### Claim 45 (depends on 44)

The device as recited in claim 44 wherein said controller is operative to perform said adjustment over a specified time period.

### Claim 46 (depends on 44)

The device as recited in claim 44 wherein said controller is operative to receive said user preference.

### Claim 47 (depends on 44)

The device as recited in claim 44 wherein said image quality setting comprises a brightness setting.

### Claim 48 (depends on 44)

The device as recited in claim 44 wherein said display is operative to display said image quality setting.

### Claim 49 (depends on 44)

The device as recited in claim 44 further comprising a storage unit.