Data display method and device

• US 9,330,591 B2
• Filed: 12/22/2010
• Issued: 05/03/2016
• Est. Priority Date: 12/22/2009
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Jeong, Young-Min, Cho, Sung-Dae
• Primary Examiner(s): Xiao, Ke
• Assistant Examiner(s): POINTE, WHITNEY A
• Application Number:
  US12/976,007
• Publication Number:
  US 20110148906A1
• Time in Patent Office: 1,959 Days
• Field of Search: 345/531, 345/102, 345/211, 345/589, 345/690
• US Class Current: 1/1
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2320/066 for control of contrast
• CPC Class Codes: G09G 2320/0686 with two or more screen areas displaying information with different brightness or colours
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 3/2007 Display of intermediate tones
• CPC Class Codes: G09G 3/3208 organic, e.g. using organic light-emitting diodes [OLED]

Abstract

A low power display and a method for display in a display device having an Active Matrix Organic Light Emitting Diodes AMOLED panel are provided. A display window that includes content to be displayed on the AMOLED panel is determined. Luminance values of pixels constituting the display window are grasped. The pixels having luminance values that are to be adjusted are determined in accordance with a distribution degree of pixels having luminance values that are larger than a reference luminance value. The luminance values of the determined pixels are changed to the reference luminance value, and the display window is displayed on the AMOLED panel with the changed luminance values.

Claims

1. A low power display method in a display device having an Active Matrix Organic Light Emitting Diodes (AMOLED) panel, the method comprising the steps of:

determining a display window including content to be displayed on the AMOLED panel;

determining a luminance value of each pixel included in the display window;

determining a representative luminance value of each pixel included in the display window from among luminance values of respective neighboring pixels;

comparing both the luminance value of each pixel included in the display window and the representative luminance value of each pixel included in the display window with a reference luminance value;

when both a luminance value of at least one pixel included in the display window and a representative luminance value corresponding to the at least one pixel are larger than the reference luminance value, identifying the at least one pixel as a pixel having a luminance value to be adjusted;

adjusting the luminance value of the identified at least one pixel to the reference luminance value; and

displaying the display window with the identified at least one pixel having the adjusted luminance value.

2. The low power display method as claimed in claim 1, wherein a luminance value that is most prevalent among the luminance values of the respective neighboring pixels is determined as the representative luminance value.

3. The low power display method as claimed in claim 2, wherein, when all of the luminance values of the respective neighboring pixels differ from one another, a smallest luminance value of the respective neighboring pixels is determined as the representative luminance value.

4. The low power display method as claimed in claim 3, wherein, when there are a plurality of luminance values having a same prevalence among the luminance values of the respective neighboring pixels, a smallest luminance value from among the plurality luminance values is determined as the representative luminance value.

5. The low power display method as claimed in claim 1, further comprising maintaining the luminance value of the at least one pixel included in the display window, when at least one of the luminance value of the at least one pixel and the representative luminance value corresponding to the least one pixel is below the reference luminance value.

6. The low power display method as claimed in claim 1, further comprising adjusting a saturation of the pixels included in the display window, after the luminance value of the identified at least one pixel is adjusted to the reference luminance value.

7. A display device comprising:

an Active Matrix Organic Light Emitting Diodes (AMOLED) panel; and

a control unit configured to determine a display window including content to be displayed on the AMOLED panel, to determine a luminance value of each pixel included in the display window, to determine a representative luminance value of each pixel included in the display window from among luminance values of respective neighboring pixels, to compare both the luminance value of each pixel included in the display window and the representative luminance value of each pixel included in the display window with a reference luminance value, when both the luminance value of at least one pixel included in the display window and a representative luminance value corresponding to the at least one pixel are larger than the reference luminance value, to identify the at least one pixel as a pixel having a luminance value that is to be adjusted, and to adjust the luminance value of the identified at least one pixel to the reference luminance value, and to display the display widow with the identified at least one pixel having the adjusted luminance value on the AMOLED panel.

8. The display device as claimed in claim 7, wherein a luminance value that is most prevalent among the luminance values of the respective neighboring pixels is determined as the representative luminance value.

9. The display device as claimed in claim 8, wherein, when all the luminance values of the respective neighboring pixels differ from one another, a smallest luminance value of the respective neighboring pixels is determined as the representative luminance value.

10. The display device as claimed in claim 9, wherein, when there are a plurality of luminance values having a same prevalence among the luminance values of the respective neighboring pixels, a smallest luminance value from among the plurality of luminance values is determined as the representative luminance value.

11. The display device as claimed in claim 7, wherein the control unit is configured to maintain the luminance value of the at least one pixel included in the display window, when at least one of the luminance value of the at least one pixel and the representative luminance value corresponding to the at least one pixel is below the reference luminance value.

12. The display device as claimed in claim 7, wherein the control unit is configured to adjust a saturation of the pixels included in the display window after the luminance value of the at least one pixel is adjusted to the reference luminance value.

13. The display device as claimed in claim 7, wherein the respective neighboring pixels are eight pixels that surround each pixel included in the display window.