Inventor
SHIM KUAN-CHOONG
MY19 patents
Patents
19 patentsUS11333532B1May 17, 2022
Light control circuit adapting to input signal frequency and operating method thereof
PIXART IMAGING INC9 citations85
US11237024B2Feb 1, 2022
Optical encoder with covered photo diode
PIXART IMAGING INC5 citations83
US11108385B1Aug 31, 2021
Phase shifter circuit of optical encoder and operating method thereof
PIXART IMAGING INC8 citations83
US10187948B1Jan 22, 2019
Light control circuit and optical encoder system
PIXART IMAGING INC5 citations83
US11885828B2Jan 30, 2024
Optical encoder with changeable comparator hysteresis and operating method thereof
PIXART IMAGING INC2 citations72
US11709077B2Jul 25, 2023
Optical encoder with covered photo diode
PIXART IMAGING INC2 citations72
US11644345B2May 9, 2023
Optical encoder capable of regulating gain of index output
PIXART IMAGING INC2 citations72
US12181313B2Dec 31, 2024
Light control circuit of optical encoder and operating method thereof
PIXART IMAGING INC0 citations62
US12174048B2Dec 24, 2024
Optical encoder with two index photodiodes having different width from position photodiodes
PIXART IMAGING INC0 citations62
US11774269B2Oct 3, 2023
Light control circuit and frequency detector of optical encoder system, and operating method of frequency detector
PIXART IMAGING INC0 citations62
US12203956B2Jan 21, 2025
Optical encoder with comparator hysteresis changed with rotating speed and operating method thereof
PIXART IMAGING INC0 citations61
US12117318B2Oct 15, 2024
Optical encoder capable of regulating gain of index output
PIXART IMAGING INC0 citations61
US12411005B2Sep 9, 2025
Optical encoding system with reduced total harmonic distortion
PIXART IMAGING INC0 citations60
US11994416B2May 28, 2024
Signal processing circuit of anti-pollution optical encoder
PIXART IMAGING INC0 citations60
US11740108B2Aug 29, 2023
Anti-pollution optical encoder
PIXART IMAGING INC0 citations60
US12525960B2Jan 13, 2026
Phase shifter circuit of optical encoder and operating method thereof
PIXART IMAGING INC1 citations59
US10728972B2Jul 28, 2020
Light control circuit and optical encoder system
PIXART IMAGING INC0 citations51
US10462869B1Oct 29, 2019
Light control circuit and optical encoder system
PIXART IMAGING INC0 citations51
US12025476B1Jul 2, 2024
Optical encoding system compensating assembly tolerance
PIXART IMAGING INC0 citations49