Inventor
LIAO CHI-CHIEH
TW55 patents
⚠️ This page may combine multiple inventors who share the name “LIAO CHI-CHIEH”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PIXART IMAGING INC
39 patentsUS8749764B2Jun 10, 2014
Distance-measuring device of measuring distance according to variation of imaging location and calibrating method thereof
PIXART IMAGING INC73 citations98
US12093480B2Sep 17, 2024
Lighting touchpad with different layer configuration of sensing electrodes and LED chips
PIXART IMAGING INC3 citations75
US11687187B2Jun 27, 2023
Lighting touchpad
PIXART IMAGING INC1 citations73
US11418193B2Aug 16, 2022
Key unit and keyboard using the same
PIXART IMAGING INC2 citations73
US10489003B1Nov 26, 2019
Capacitive touch control device, electricity charging controller, and electricity charged controller
PIXART IMAGING INC6 citations73
US9544508B2Jan 10, 2017
Image sensor which can adjust brightness information to fall in a predetermined range
PIXART IMAGING INC3 citations73
US9350922B2May 24, 2016
Image sensing method and image sensor utilizing the method
PIXART IMAGING INC3 citations73
US9746980B2Aug 29, 2017
Capacitive finger navigation module and manufacturing method thereof
PIXART IMAGING INC2 citations71
US9552118B2Jan 24, 2017
Capacitive finger navigation module and manufacturing method thereof
PIXART IMAGING INC3 citations71
US12285876B2Apr 29, 2025
Cleaning robot capable of eliminating reflection interference
PIXART IMAGING INC0 citations63
US10955308B2Mar 23, 2021
Pressure measuring method and pressure measuring apparatus
PIXART IMAGING INC0 citations63
US8836923B2Sep 16, 2014
Distance measurement system
PIXART IMAGING INC2 citations63
US12561029B2Feb 24, 2026
Touch panel
PIXART IMAGING INC0 citations62
US12498815B2Dec 16, 2025
Lighting touchpad with recessed protective layer and multiple substrates
PIXART IMAGING INC0 citations62
US12474805B1Nov 18, 2025
Sensing touchpad
PIXART IMAGING INC0 citations62
US12154732B2Nov 26, 2024
Key unit
PIXART IMAGING INC0 citations62
US12152925B2Nov 26, 2024
Optical detection device
PIXART IMAGING INC0 citations62
US11953400B2Apr 9, 2024
Input device including improved pressure sensing unit design
PIXART IMAGING INC0 citations62
US11852519B2Dec 26, 2023
Optical detection device
PIXART IMAGING INC0 citations62
US11726599B2Aug 15, 2023
Single layer capacitive touch force sensor
PIXART IMAGING INC0 citations62
US11674862B2Jun 13, 2023
Input device including improved pressure sensing unit design
PIXART IMAGING INC1 citations62
US11561638B2Jan 24, 2023
Single layer capacitive touch force sensor
PIXART IMAGING INC1 citations62
US11437994B2Sep 6, 2022
Touch sensor and keyboard using the same
PIXART IMAGING INC1 citations62
US11051758B2Jul 6, 2021
Electronic device capable of detecting wearing state or touching state
PIXART IMAGING INC1 citations62
US11048907B2Jun 29, 2021
Object tracking method and object tracking system
PIXART IMAGING INC0 citations62
US12517606B2Jan 6, 2026
Lighting touchpad with sensing electrode layout with lighting devices evenly distributed
PIXART IMAGING INC0 citations52
US12175047B2Dec 24, 2024
Capacitive touchpad with LED die positioned to correspond with electrode
PIXART IMAGING INC0 citations52
US11803273B2Oct 31, 2023
Touch sensor, touch pad, method for identifying inadvertent touch event and computer device
PIXART IMAGING INC0 citations52
US10578507B2Mar 3, 2020
Pressure measuring method and pressure measuring apparatus
PIXART IMAGING INC0 citations52
US10261687B2Apr 16, 2019
Pin sharing circuit, pin sharing method, electronic device and electronic wire using the same
PIXART IMAGING INC0 citations52
US10156939B2Dec 18, 2018
Light source assembly of optical touch device
PIXART IMAGING INC0 citations52
US10013071B2Jul 3, 2018
Three-dimensional gesture sensing method and touch sensing device using the same
PIXART IMAGING INC0 citations51
US12159427B2Dec 3, 2024
Object position determining system and object detection system
PIXART IMAGING INC0 citations50
US9996169B2Jun 12, 2018
Capacitive joystick device
PIXART IMAGING INC0 citations50
US10379638B2Aug 13, 2019
Method of determining adaptive DPI curve
PIXART IMAGING INC0 citations49
US12366928B2Jul 22, 2025
Input method and controller of touch keyboard
PIXART IMAGING INC0 citations47
US10437365B2Oct 8, 2019
Driver integrated circuit of touch panel and associated driving method
PIXART IMAGING INC0 citations42
US9684422B2Jun 20, 2017
Smart device having ability for rejecting mistaken touching
PIXART IMAGING INC0 citations42
US9207809B2Dec 8, 2015
Optical touch system and optical touch control method
PIXART IMAGING INC0 citations42
HSU EN-FENG
5 patentsUS8514375B2Aug 20, 2013
Distance-measuring device of measuring distance according to variation of imaging location and calibrating method thereof
HSU EN-FENG8 citations84
US8718962B2May 6, 2014
Calibrating method for calibrating measured distance of a measured object measured by a distance-measuring device according to ambient temperature and related device
HSU EN-FENG3 citations63
US8462318B2Jun 11, 2013
Distance-measuring system with correction function and method thereof
HSU EN-FENG4 citations62
US9093342B2Jul 28, 2015
Optical sensor capable of detecting IR light and visible light simultaneously
HSU EN-FENG0 citations52
US8537339B2Sep 17, 2013
Distance measurement system and method thereof
HSU EN-FENG1 citations52
YANG SHU-SIAN
2 patentsGU REN HAU
2 patentsGU REN-HAU
1 patentLIAO CHI CHIEH
1 patentShowing the top 50 of 55 patents by PatentIndex Score.