Electronic device and method for displaying image on a display to prevent burn-in of the display
An electronic device includes a display, a display driver integrated circuit (DDI) electrically coupled with the display, a memory that stores an image, and a processor. The processor is configured to analyze at least one feature of the image and to determine at least one of a movement range, a movement interval, and a movement period of the image based on the at least one feature. The DDI is configured to display the image in the display when at least part of the processor is deactivated, and to change a display location of the image within the movement range depending on the movement interval and the movement period.
1. An electronic device comprising:
a display;
a display driver integrated circuit (DDI) electrically coupled with the display;
a memory configured to store an image; and
a processor configured to:
analyze a horizontal spatial frequency of pixels included in the image line by line, from one end of the image to the other end of the image along a vertical axis,
analyze a vertical spatial frequency of pixels included in the image line by line, from one end of the image to the other end of the image along a horizontal axis, and
determine pixel width information obtained from the analyzed horizontal and vertical spatial frequencies as horizontal and vertical movement intervals of the image, respectively, wherein the movement interval is a distance by which the image is to be moved on the display, and
wherein the DDI is configured to:
display the image on the display when at least part of the processor is deactivated; and
change a display location of the image within a movement range depending on the movement interval.
2. The electronic device of claim 1 , wherein the processor is further configured to:
analyze a plurality of spatial frequencies for each color channel of the image;
determine a plurality of movement intervals for the each color channel based on the plurality of spatial frequencies;
determine a weighted average of the plurality of movement intervals; and
select the weighted average as the movement interval of the image.
3. The electronic device of claim 1 , wherein the processor is further configured to:
analyze a plurality of spatial frequencies for each color channel of the image;
determine a plurality of movement intervals for the each color channel based on the plurality of spatial frequencies; and
select one of the plurality of movement intervals as the movement interval of the image.
4. An image displaying method of an electronic device, the method comprising:
analyzing, using a processor, a horizontal spatial frequency of pixels included in the image line by line, from one end of the image to the other end of the image along a vertical axis;
analyzing, using the processor, a vertical spatial frequency of pixels included in the image line by line, from one end of the image to the other end of the image along a horizontal axis;
determining, using the processor, pixel width information obtained from the analyzed horizontal and vertical spatial frequencies as horizontal and vertical movement intervals of the image, respectively, wherein the movement interval is a distance by which the image is to be moved on the display;
displaying the image on a display when at least part of the processor is deactivated; and
changing a display location of the image within a movement range depending on the movement interval and a movement period, wherein the movement period is a time period for the image to be displayed at one location to avoid burn-in of the display.