US 11,758,098 B2
Synchronization circuit for oscillating mirror and laser
Elik Haran, Kfar Saba (IL)
Assigned to STMicroelectronics LTD, Netanya (IL)
Filed by STMicroelectronics LTD, Netanya (IL)
Filed on Nov. 15, 2022, as Appl. No. 17/987,250.
Application 17/987,250 is a continuation of application No. 16/806,572, filed on Mar. 2, 2020, granted, now 11,528,456.
Application 16/806,572 is a continuation of application No. 15/689,871, filed on Aug. 29, 2017, granted, now 10,623,706, issued on Apr. 14, 2020.
Prior Publication US 2023/0070845 A1, Mar. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 26/08 (2006.01); H04N 9/31 (2006.01); H04N 5/06 (2006.01); H03L 7/08 (2006.01); H03K 21/40 (2006.01)
CPC H04N 9/3135 (2013.01) [H04N 5/06 (2013.01); H04N 9/3155 (2013.01); H04N 9/3161 (2013.01); H03K 21/40 (2013.01); H03L 7/08 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A control system for a laser scanning projector, comprising:
a mirror controller configured to generate horizontal and vertical mirror synchronization signals for an oscillating mirror apparatus based upon a mirror clock signal;
laser modulation circuitry configured to:
generate horizontal and vertical laser synchronization signals as a function of first and second laser clock signals; and
generate control signals for a laser that emits a laser beam that impinges on the oscillating mirror apparatus;
first synchronization circuitry configured to:
receive the horizontal mirror synchronization signal from the mirror controller;
receive the horizontal laser synchronization signal from the laser modulation circuitry; and
modify generation of the first laser clock signal so as to achieve alignment between the horizontal mirror synchronization signal and the horizontal laser synchronization signal; and
second synchronization circuitry configured to:
receive the vertical mirror synchronization signal from the mirror controller;
receive the vertical laser synchronization signal from the laser modulation circuitry; and
modify generation of the second laser clock signal so as to achieve alignment between the vertical mirror synchronization signal and the vertical laser synchronization signal.