Burn-in control
A burn-in control method and video processor for executing the same. The video processor intelligently recognizes aspects of a video image that are likely to cause burn-in, and responsive to such recognition, modifies the video image to prevent uneven aging of the pixels. According to one aspect of the disclosure, modifications are spatially made to an entire video frame, one or more selected regions of a video frame, or one or more individual pixels of a video frame. According to another aspect of the disclosure, modifications are temporally made to all frames in a video stream, selected frames in a video stream, or a single frame in a video stream.
1. A burn-in limiting video processor, comprising:
an input for receiving video content;
analysis logic for analyzing the received video content to identify potential burn-in candidates in the received video content;
modification logic to modify at least some of the video content to mitigate adverse effects of the identified burn-in candidates, where the modification logic spatially shifts at least some identified burn-in candidates without spatially shifting other portions of the video content, and calculates a fill to reduce at least a portion of a texture disruption in a region corresponding to a region previously occupied by at least a portion of a spatially-shifted burn-in candidate; and
an output for outputting the modified video content.
2. The burn-in limiting video processor of claim 1 , where the modification logic further color shifts at least some identified burn-in candidates.
3. The burn-in limiting video processor of claim 2 , where the modification logic color shifts at least some identified burn-in candidates without color shifting other portions of the video content.
4. The burn-in limiting video processor of claim 1 , where the modification logic further camouflages at least some identified burn-in candidates.
5. The burn-in limiting video processor of claim 1 , where the modification logic further blacks out at least a portion of the video content.
6. The burn-in limiting video processor of claim 1 , where the modification logic further replaces the video content with a screen saver.
7. The burn-in limiting video processor of claim 1 , where the analysis logic identifies potential burn-in candidates at least in part by searching for static pixels.
8. The burn-in limiting video processor of claim 7 , where the analysis logic identifies potential burn-in candidates at least in part by searching for static pixels adjacent pixels that contrast the static pixels.
9. The burn-in limiting video processor of claim 1 , where the analysis logic and the modification logic are embodied on a common integrated circuit.
10. The burn-in limiting video processor of claim 9 , further comprising at least one of motion estimation logic, deinterlacing logic, scaling logic, and color processing logic, and where the analysis logic, the modification logic, and the at least one of motion estimation logic, deinterlacing logic, scaling logic, and color processing logic are embodied on a common integrated circuit.
11. A method of limiting display burn-in, comprising:
receiving a video stream;
analyzing the video stream to identify potential burn-in candidates;
modifying the video stream so as to spatially shift at least some identified burn-in candidates without spatially shifting video content adjacent the identified burn-in candidates so as to mitigate adverse effects of the identified burn-in candidates;
calculating a fill to reduce at least a portion of a texture disruption in a region corresponding to a region previously occupied by at least a portion of a spatially-shifted burn-in candidate; and
outputting the modified video stream.
12. The method of claim 11 , where modifying the video stream includes color shifting at least some identified burn-in candidates.
13. The method of claim 12 , where modifying the video stream includes color shifting at least some identified burn-in candidates without color shifting video content adjacent the identified burn-in candidates.
14. The method of claim 11 , where modifying the video stream includes camouflaging at least some identified burn-in candidates.
15. The method of claim 11 , where modifying the video stream includes blacking out at least a portion of the video content.
16. The method of claim 11 , where modifying the video stream includes replacing the video content with a screen saver.
17. A display, comprising:
a screen; and
a video processor operatively connected to the screen, the video processor including:
analysis logic for analyzing video content to be displayed by the screen so as to identify candidates likely to cause burn-in on the screen; and
modification logic to modify at least some of the video content so as to limit burn-in on the screen, where the modification logic spatially shifts at least some identified burn-in candidates without spatially shifting other portions of the video content and calculates a fill to reduce at least a portion of a texture disruption in a region corresponding to a region previously occupied by at least a portion of a spatially-shifted burn-in candidate.