Display controller, electronic device, and virtual reality device
A display controller includes a frame rate converter creating a second reference image having a second frame rate higher than a first frame rate of a first reference image, based on the first reference image, a buffer storing the second reference image, and an image processor creating an output image by selecting at least a portion of the second reference image.
1. A display controller comprising:
a frame rate converter configured to create a second reference image having a second frame rate higher than a first frame rate of a first reference image, based on the first reference image, the second reference image comprising a first image frame of the first reference image, a second image frame of the first reference image, and a plurality of additional image frames interposed between the first image frame and the second image frame, each of the plurality of additional image frames corresponding to one of the first image frame and the second image frame;
a buffer configured to store the second reference image; and
an image processor configured to create an output image by selecting a portion of the second reference image and increasing a resolution of the portion of the second reference image.
2. The display controller of claim 1 , wherein the frame rate converter is further configured to create the second reference image by inserting each image frame of the first reference image and a corresponding plurality of additional image frames after each image frame of the first reference image.
3. The display controller of claim 2 , wherein the first reference image is created by selecting the portion of an original image.
4. The display controller of claim 3 , wherein the image processor is further configured to create the output image by selecting portions of the first image frame, the second image frame, and each of the corresponding plurality of additional image frames, based on user movements.
5. The display controller of claim 3 , wherein the portion of the original image is selected based on user movements.
6. The display controller of claim 3 , wherein the original image is received from a 360 degree camera, and each of the first reference image and the second reference image has a smaller size than the original image.
7. The display controller of claim 3 , wherein the original image is a game image, and each of the first reference image and the second reference image has a smaller size than the original image.
8. The display controller of claim 7 , wherein the image processor is further configured to divide the second reference image into a first area and a second area larger than the first area.
9. The display controller of claim 8 , wherein the image processor is further configured to determine the second area by selecting at least portions of the first image frame, the second image frame, and each of the corresponding plurality of additional image frames, based on user movements.
10. The display controller of claim 2 , wherein a first reference image size of the first reference image is a size of an original image.
11. The display controller of claim 10 , wherein the frame rate converter is further configured to create the corresponding plurality of additional image frames by using at least one among a motion estimation technique and a motion compensation technique.
12. The display controller of claim 1 , wherein the first reference image has a substantially same resolution with a resolution of the second reference image.
13. The display controller of claim 12 , wherein the image processor is further configured to create the output image by increasing a resolution of the portion of the second reference image.