Patent ID: 8908092
Filing Date: 2014-12-09
Classification: H04N

Abstract:
1. A method for improving vertical resolution at sides of a four cornered image produced by a scanning projector display device, the method comprising: (a) starting at a first line level, in one of the corners, scanning a first plurality of frames of the image by scanning back and forth from side to side; (b) starting at a vertical offset level from the first line level, in the same one of the corners, scanning a second plurality of frames of the image by scanning back and forth from side to side; wherein step (a) is performed for one of odd and even frames of the image; wherein step (b) is performed for the other one of the odd and even frames of the image; wherein steps (a) and (b) are alternately performed so that the frames scanned at step (a) are interlaced with the frames scanned at step (b); wherein the scanning at steps (a) and (b) start in a same direction; and wherein in steps (a) and (b) vertical synchronization (Vsync) pulses are used to identify when ends of the frames are reached.