| 摘要 |
Systems and methods which can shift video to the edge of the display screen. The user can electrically and mechanically roll up or down the projection screen to fit the opposite edge. Further, the electrically shifted position can be memorized in memory, which will be easily recalled during future use. Also, to avoid displaying visible noise near the top edge of the video, the video may be shifted to avoid such noise being visible. The shifted position may be stored in memory to be recalled for future use.
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