SYSTEM AND METHOD FOR ADJUSTING BRIGHTNESS OF A DISPLAY SCREEN OF AN ELECTRONIC DEVICE

• US 20130147981A1
• Filed: 06/21/2012
• Published: 06/13/2013
• Est. Priority Date: 12/12/2011
• Status: Abandoned Application

• Current Assignee: Chi Mei Communication Systems Incorporated (Hon Hai Precision Industry Co., Ltd.), Shenzhen Futaihong Precision Industrial Company Limited (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Chi Mei Communication Systems Incorporated (Hon Hai Precision Industry Co., Ltd.), Shenzhen Futaihong Precision Industrial Company Limited (Hon Hai Precision Industry Co., Ltd.)
• Inventors: WU, CONG
• Application Number:
  US13/528,847
• Publication Number:
  US 20130147981A1
• Time in Patent Office: Days
• US Class Current: 348/222.1
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2360/144 the light being ambient light
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters

Abstract

In a method for adjusting brightness of a display of an electronic device, the method sets a plurality of brightness levels of the display screen, and sets a plurality of brightness intervals of brightness values of images captured by a camera device of the electronic device, each brightness interval corresponding to a range of the brightness values. The method further controls the camera device to capture an image of an ambient scene of the electronic device at each predetermined time interval. A brightness value of the captured image is calculated, and a brightness interval of the calculated brightness value is determined. The method adjusts the brightness of the display screen to a brightness level corresponding to the determined brightness interval of the calculated brightness value.

Claims

1. A computer-implemented method of a display screen of an electronic device, the electronic device comprising a camera device, the method comprising:

setting a plurality of brightness levels of the display screen, and setting a plurality of brightness intervals of images captured by the camera device, each brightness level of the display screen corresponding to a range of the brightness values;

capturing an image of an ambient scene of the electronic device using the camera device at each predetermined time interval;

calculating a brightness value of the captured image, and determining a brightness interval of the calculated brightness value;

adjusting the brightness of the display screen to a brightness level corresponding to the determined brightness interval of the calculated brightness value.

2. The method according to claim 1, wherein the step of calculating a brightness value of the captured image comprises:

calculating a brightness value of each pixel of the captured image;

obtaining the brightness value of the captured image by calculating an average brightness value according to the brightness value of each pixel of the captured image.

3. The method according to claim 2, wherein the brightness value of the each pixel of the captured image is calculated according to a luminance component “

Y”

of each pixel in a YUV color model of the captured image, and the luminance component “

Y”

is calculated according to a formula of “

Y=0.299R+0.587G+0.114B”

according to RGB values of the each pixel in the captured image.

4. The method according to claim 1, wherein the camera device is a front camera or a rear camera of the electronic device.

5. The method according to claim 1, wherein the electronic device is a mobile phone, a notebook computer, a personal digital assistant (PDA), or a mobile Internet device (MID).

6. A non-transitory storage medium storing a set of instructions, when executed by at least one processor of an electronic device, cause the at least one processor to perform a method of a display screen of an electronic device, the electronic device comprising a camera device, the method comprising:

setting a plurality of brightness levels of the display screen, and setting a plurality of brightness intervals of brightness values of images captured by the camera device, each brightness level of the display screen corresponding to a range of the brightness values;

capturing an image of an ambient scene of the electronic device using the camera device at each predetermined time interval;

calculating a brightness value of the captured image, and determining a brightness interval of the calculated brightness value;

adjusting the brightness of the display screen to a brightness level corresponding to the determined brightness interval of the calculated brightness value.

7. The non-transitory storage medium according to claim 6, wherein the step of calculating a brightness value of the captured image comprises:

calculating a brightness value of each pixel of the captured image;

obtaining the brightness value of the captured image by calculating an average brightness value according to the brightness value of each pixel of the captured image.

8. The non-transitory storage medium according to claim 7, wherein the brightness value of the each pixel of the captured image is calculated according to a luminance component “

Y”

of each pixel in a YUV color model of the captured image, and the luminance component “

Y”

is calculated according to a formula of “

Y=0.299R+0.587G+0.114B”

according to RGB values of the each pixel in the captured image.

9. The non-transitory storage medium according to claim 6, wherein the camera device is a front camera or a rear camera of the electronic device.

10. The non-transitory storage medium according to claim 6, wherein the electronic device is a mobile phone, a notebook computer, a personal digital assistant (PDA), or a mobile Internet device (MID).

11. An electronic device, comprising:

a display screen;

a camera device;

a storage system;

at least one processor; and

one or more programs that are stored in the storage system and executed by the at least one processor, the one or more programs comprising;

a setting module that sets a plurality of brightness levels of the display screen, and sets a plurality of brightness intervals of brightness values of images captured by the camera device, each brightness level of the display screen corresponding to a range of the brightness values;

a control module that controls the camera device to capture an image of an ambient scene of the electronic device at each predetermined time interval;

a calculation module that calculates a brightness value of the captured image, and determines a brightness interval of the calculated brightness value;

an adjustment module that adjusts the brightness of the display screen to a brightness level corresponding to the determined brightness interval of the calculated brightness value.

12. The electronic device according to claim 11, wherein the calculation module calculates the brightness value of the captured image by:

calculating a brightness value of each pixel of the captured image;

obtaining the brightness value of the captured image by calculating an average brightness value according to the brightness value of each pixel of the captured image.

13. The electronic device according to claim 12, wherein the brightness value of the each pixel of the captured image is calculated according to a luminance component “

Y”

of each pixel in a YUV color model of the captured image, and the luminance component “

Y”

is calculated according to a formula of “

Y=0.299R+0.587G+0.114B”

according to RGB values of the each pixel in the captured image.

14. The electronic device according to claim 11, wherein the camera device is a front camera or a rear camera of the electronic device.

15. The electronic device according to claim 11, wherein the electronic device is a mobile phone, a notebook computer, a personal digital assistant (PDA), or a mobile Internet device (MID).