Methods and devices for controlling operations of an organic light-emitting diode display

Patent metadata

Field	Value
Publication number	US-9257066-B2
Application number	US-201314026057-A
Country	US
Kind code	B2
Filing date	Sep 13, 2013
Priority date	Sep 17, 2012
Publication date	Feb 9, 2016
Grant date	Feb 9, 2016

Abstract

In one example embodiment, a method of operating an image data processing circuit which controls an operation of an organic light-emitting diode (OLED) display includes transforming at least one first RGB value into at least one luminance value and at least one chroma value. The method further includes adjusting the at least one luminance value and the at least one chroma value based on at least one first control value. The method further includes generating at least one second RGB value based on the at least one adjusted luminance value and the at least one adjusted chroma value. The method further includes outputting the second RGB values to the OLED display.

First claim

What is claimed is:

1. A method of operating an image data processing circuit which controls a power consumption of an organic light-emitting diode (OLED) display, the method comprising:
transforming at least one first Red, Green, Blue (RGB) value into at least one luminance value and at least one chroma value;
generating at least a first control value to reduce the power consumption of the OLED display based on at least one of an input control value set by a user for power saving, a histogram associated with the at least one first RGB value and a type of an application executed to process the at least one first RGB value;
adjusting the at least one luminance value and the at least one chroma value based on the generated first control value;
generating at least one second RGB value based on the at least one adjusted luminance value and the at least one adjusted chroma value; and
outputting the at least one second RGB value to the OLED display.

2. The method of claim 1 , wherein the generating the first control value based on the histogram includes,
analyzing a histogram pattern defined by a cumulative distribution of the at least one first RGB value, and
generating the at least one first control value based on the analyzing.

3. The method of claim 1 , wherein the generating the first control value based on the type of the application includes,
detecting the type of the application as one of a video playback application program, a still-image application program, a game application program and a user interface application program executed to process the at least one first RGB value; and
generating the first control value based on the detecting.

4. The method of claim 1 , wherein the generating the first control value includes,
defining a plurality of display regions in the OLED display, and
generating a corresponding first control value for a respective one of the defined plurality of display regions, wherein
the method further comprises independently controlling at least one luminance value and at least one chroma value for each of the defined plurality of display regions based on the corresponding first control value.

5. The method of claim 1 , further comprising:
adjusting at least one original RGB value based on at least a second control value; and
generating the at least one first RGB value based on the at least one adjusted original RGB value.

6. The method of claim 5 , further comprising:
generating the second control value according to input control values set by a user.

7. The method of claim 5 , further comprising:
generating the second control value based on the histogram.

8. The method of claim 5 , further comprising:
detecting the type of the application as one of a video playback application program, a still-image application program, a game application program and a user interface application program executed to process the at least one original RGB value; and
generating the first control value and the second control value based on the detected type of the application program.

9. The method of claim 5 , wherein the generating the first control value includes,
defining a plurality of display regions in the OLED display, and
generating a corresponding first control value for a respective one of the plurality of display regions, wherein
the method further comprises independently controlling at least one luminance value and at least one chroma value for each of the plurality of display regions based on the corresponding first control value.

10. The method of claim 9 , wherein the position information is generated by an application program executed to process the at least one original RGB value.

11. A system on chip (SoC) for reducing power consumption of an organic light-emitting diode (OLED) display, the SoC comprising:
a memory configured to store computer-readable instructions; and
a processor configured to execute the computer-readable instructions to,
transform at least one first Red, Green, Blue (RGB) value into at least one luminance value and at least one chroma value,
generate at least a first control value to reduce the power consumption of the OLED display based on at least one of an input control value set by a user, a histogram associated with the at least one first RGB value and a type of an application executed to process the at least one first RGB value,
adjust the at least one luminance value and the at least one chroma value based on the generated first control value,
generate at least one second RGB value based on the at least one adjusted luminance value and the at least one adjusted chroma value, and
output the at least one second RGB value to the OLED display such that the OLED display reduces the power consumption with the at least one second RGB value compared with the at least one RGB value.

12. The SoC of claim 11 , wherein the processor is further configured to implement the computer readable instructions to,
adjust at least one of original RGB values based on at least one a second control value, and
generate the at least one first RGB value according to the adjusting of the at least one of original RGB values.

13. The SoC of claim 11 , further comprising:
a register; and
a user interface configured to receive the input control value from the user; wherein the processor is further configured to execute the computer-readable instructions to,
generate a second control value based on the input control value, and
store first control value and the second control value in the register.

14. The SoC of claim 11 , further comprising:
a register, wherein the processor is further configured to execute the computer-readable instructions to,
detect the type of the application as one of a video playback application program, a still-image application program, a game application program and a user interface application program executed to process the at least one original RGB value,
generate the first control value and a second control value based on the detected type of the application program, and
store the first control value and the at least one second control value in the register.

15. The SoC of claim 11 , wherein the processor is further configured to generate the first control value and a second control value based on the histogram by,
analyzing a histogram pattern defined by a cumulative distribution of the at least one original RGB value; and
generating the first control value and the second control value based on the analyzed histogram pattern.

16. A method of operating an image data processing circuit which controls an operation of an organic light-emitting diode (OLED) display, the method comprising:
transforming image data into at least one luminance value and at least one chroma value;
adjusting the at least one luminance value and the at least one chroma value to reduce power consumption of the OLED display based on at least one first control value, the at least one first control value being based on at least one of an input control value set by a user, a histogram associated with the image data and a type of an application executed to process the image data;
generating output image data based on the at least one adjusted luminance value and the at least one adjusted chroma value; and
outputting the output image data to the OLED display.

17. The method of claim 16 , wherein the image data is at least one original Red, Green, Blue (RGB) value associated with data received from an external memory.

18. The method of claim 17 , wherein the transform

Assignees

• Samsung Electronics Co Ltd

Inventors

• Roh Jong Ho
• Kang Eun Ji
• Kim Kyoung Man
• Lee Jong Hyup
• Chun Kee Moon

Classifications

• G06F1/3259

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• G09G2340/06

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• G09G3/3225 Primary

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• G09G2330/021

  Power management, e.g. power saving · CPC title

• G09G1/005

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