Inventor
LIU REN-CHIEH
TW33 patents
⚠️ This page may combine multiple inventors who share the name “LIU REN-CHIEH”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PIXART IMAGING INC
23 patentsUS11792550B2Oct 17, 2023
Pixel circuit outputting pulse width signal and optical sensor using the same
PIXART IMAGING INC5 citations85
US11706542B2Jul 18, 2023
Pixel circuit outputting time difference data and image data, and operating method of pixel array
PIXART IMAGING INC5 citations85
US11812176B2Nov 7, 2023
Pixel circuit selecting to output time difference data or image data
PIXART IMAGING INC4 citations74
US11546540B2Jan 3, 2023
Analog operation circuit for operating pulse width signals outputted from pixel circuit
PIXART IMAGING INC3 citations73
US11290671B2Mar 29, 2022
Pixel circuit outputting pulse width signals and performing analog operation
PIXART IMAGING INC3 citations73
US11153524B1Oct 19, 2021
High precision pixel circuit and method thereof
PIXART IMAGING INC6 citations73
US11055548B1Jul 6, 2021
Motion sensor using temporal difference pixels and lift-up detection thereof
PIXART IMAGING INC3 citations73
US11849236B2Dec 19, 2023
Time delay integration sensor handling defect pixels
PIXART IMAGING INC2 citations72
US12513429B2Dec 30, 2025
Optical sensor outputting partial image data of pixel array
PIXART IMAGING INC0 citations62
US12317604B2May 27, 2025
Analog operation circuit for processing pixel data in analog phase
PIXART IMAGING INC0 citations62
US12279054B2Apr 15, 2025
Time delay integration sensor with multiple sensor arrays
PIXART IMAGING INC0 citations62
US12192655B2Jan 7, 2025
Time delay integration sensor handling defect pixels
PIXART IMAGING INC0 citations62
US12137295B2Nov 5, 2024
Pixel circuit selecting to output time difference data or image data
PIXART IMAGING INC0 citations62
US12058467B2Aug 6, 2024
Pixel circuit outputting pulse width signal and optical sensor using the same
PIXART IMAGING INC0 citations62
US12052523B2Jul 30, 2024
Pixel circuit outputting time difference data and image data, and operating method thereof
PIXART IMAGING INC0 citations62
US11863885B2Jan 2, 2024
Time delay integration sensor with multiple sensor arrays
PIXART IMAGING INC0 citations62
US11783633B2Oct 10, 2023
Motion sensor using temporal difference pixels and lift-up detection thereof
PIXART IMAGING INC0 citations62
US11336843B2May 17, 2022
Time delay integration sensor
PIXART IMAGING INC1 citations62
US11330206B2May 10, 2022
Image sensing circuit and method capable of obtaining higher image brightness dynamic range
PIXART IMAGING INC0 citations62
US12568321B2Mar 3, 2026
Time delay integration sensor with pixels having different sensing ability
PIXART IMAGING INC0 citations52
US12347181B2Jul 1, 2025
Neural signal detection circuit outputting time difference data or neural data
PIXART IMAGING INC0 citations52
US12556839B2Feb 17, 2026
Time delay integration sensor with dual gains
PIXART IMAGING INC0 citations51
US11343448B2May 24, 2022
Method of operating an HDR pixel circuit achieving high precision
PIXART IMAGING INC0 citations50
REALTEK SEMICONDUCTOR CORP
9 patentsUS7622996B2Nov 24, 2009
Multi-loop phase locked loop circuit
REALTEK SEMICONDUCTOR CORP42 citations92
US7622992B2Nov 24, 2009
Power amplifier circuit having a bias signal inputted into input terminal and method thereof
REALTEK SEMICONDUCTOR CORP8 citations84
US7777546B2Aug 17, 2010
DC offset calibration apparatus and method for differential signals
REALTEK SEMICONDUCTOR CORP7 citations73
US7612600B2Nov 3, 2009
DC offset calibration apparatus and method
REALTEK SEMICONDUCTOR CORP4 citations62
US7830198B2Nov 9, 2010
Multi-input mixer, mixer device, and mixing method
REALTEK SEMICONDUCTOR CORP4 citations61
US7782160B2Aug 24, 2010
Central frequency adjustment device and adjustable inductor layout using trimmable wire
REALTEK SEMICONDUCTOR CORP0 citations52
US7576618B2Aug 18, 2009
Frequency synthesizer with a plurality of frequency locking circuits
REALTEK SEMICONDUCTOR CORP0 citations52
US7288976B2Oct 30, 2007
Charge pump circuit and method thereof
REALTEK SEMICONDUCTOR CORP0 citations52
US7816971B2Oct 19, 2010
Switch circuit having adjustable linearity of differential mode resistances
REALTEK SEMICONDUCTOR CORP0 citations42