公开(公告)号：US20180348506A1

公开(公告)日：2018-12-06

申请号：US15613455

申请日：2017-06-05

Applicant: STMicroelectronics Ltd

Inventor： Offir Duvdevany ,  Naomi Petrushevsky

IPC: G02B26/08 ,  H03L7/081 ,  G02B26/10

CPC classification number: G02B26/0833 ,  G02B26/10 ,  G02B26/105 ,  H03L1/00 ,  H03L7/0814 ,  H04N9/3129 ,  H04N9/3135 ,  H04N9/3194

Abstract: Disclosed herein is a mirror controller for an oscillating mirror. The mirror controller includes a processor configured to receive a mirror sense signal from the oscillating mirror and to determine a phase error between the mirror sense signal and a mirror drive signal. The processor determines the phase error by sampling the mirror sense signal at a first time, sampling the mirror sense signal at a second time at which the mirror sense signal is expected to be equal to the mirror sense signal as sampled at the first time, and generating the phase error as a function of a difference between the sample of the mirror sense signal at the second time and the sample of the mirror sense signal at the first time.