LED synchronization for virtual and augmented reality devices
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United States of America Patent
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Oct 22, 2024
Grant Date -
May 25, 2023
app pub date -
Jan 11, 2023
filing date -
May 19, 2020
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Abstract
A master clock signal for an image capture device and a light emission device is accessed. The master clock signal is divided to generate a high frequency clock signal. A frame timer is used to measure a frame time of the image capture device based on cycles of the high frequency clock signal. Based on an exposure timing signal from the image capture device, estimating an exposure start time for the image capture device; is estimated. Based on the estimated starting time, the light emission device begins emission of a positional tracking pattern at the estimated starting time and for a duration determined by the measured frame time of the image capture device.
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