METHOD TO MAINTAIN PHASE DIFFERENCE OF POSITIONING MIRROR RELATIVE TO RESONATING MIRROR

摘要

System and method for synchronizing the low speed mirror movement of a mirror display system with incoming frame or video signals, and synchronizing buffered lines of video data to the independently oscillating scanning mirror. According to one embodiment of the invention, the peak portions (14, 20) of the low speed cyclic drive signal (12) are synchronized with the incoming frames of video by compressing or expanding the peak portion or turn around portion so that each video frame begins at the same location (16) on the display screen. The actual position of the high frequency mirror is determined by sensors and a "trigger" signal is generated to distribute the signals for each scan line such that the scan lines are properly positioned on the display.