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Cannon has recently filed a new patent titled “Recording successive frames of raw sensor data depicting a moving scene”. The process will allow faster recording of 4K high-resolution frames at about the speed of 2K resolution. Essentially, the method captures a high-resolution frame followed by a low resolution frame. Because successive frames are very similar the lower resolution frame can be restored later to full resolution. During the video recording there is less raw data for the camera to process and store. Thus the higher resolution videos take less space and time to store in the camera. When transferred to a computer the frames are algorithmically rendered at the higher resolution.
Read more of their patent by clicking at the title!
