Inventor
TSAI CHENG-NAN
TW38 patents
⚠️ This page may combine multiple inventors who share the name “TSAI CHENG-NAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PIXART IMAGING INC
28 patentsUS10092244B2Oct 9, 2018
Biometric detection module with denoising function and biometric detection method thereof
PIXART IMAGING INC33 citations94
US10168220B2Jan 1, 2019
Wearable infrared temperature sensing device
PIXART IMAGING INC5 citations84
US10670465B2Jun 2, 2020
Wearable infrared temperature sensing device
PIXART IMAGING INC2 citations73
US9818245B2Nov 14, 2017
Individualized control system utilizing biometric characteristic
PIXART IMAGING INC4 citations73
US11615684B2Mar 28, 2023
Smoke detector
PIXART IMAGING INC3 citations72
US11213217B2Jan 4, 2022
Physiological detection system and operating method thereof
PIXART IMAGING INC5 citations72
US11918329B2Mar 5, 2024
Array physiological detection system
PIXART IMAGING INC2 citations70
US11020013B2Jun 1, 2021
Array physiological detection system and device
PIXART IMAGING INC2 citations70
US12222246B2Feb 11, 2025
Wearable device
PIXART IMAGING INC0 citations62
US12203838B2Jan 21, 2025
Smoke detector having light source surrounded by wall with varied heights
PIXART IMAGING INC0 citations62
US12106649B2Oct 1, 2024
Smoke detector capable of distinguishing smoke and particles
PIXART IMAGING INC0 citations62
US11913864B2Feb 27, 2024
Smoke detector with increased scattered light intensity
PIXART IMAGING INC1 citations62
US11872014B2Jan 16, 2024
Optical detection device for physiological characteristic identification
PIXART IMAGING INC0 citations62
US11854361B2Dec 26, 2023
Smoke detector with protrusions
PIXART IMAGING INC0 citations62
US11719579B2Aug 8, 2023
Wearable infrared temperature sensing device
PIXART IMAGING INC0 citations62
US11284799B2Mar 29, 2022
Optical detection device for physiological characteristic identification
PIXART IMAGING INC0 citations62
US11268859B2Mar 8, 2022
Wearable infrared temperature sensing device
PIXART IMAGING INC0 citations62
US12046114B2Jul 23, 2024
Smoke detection device with preferred detection accuracy
PIXART IMAGING INC0 citations61
US9354749B2May 31, 2016
Optical touch system with brightness compensation and brightness compensation method thereof
PIXART IMAGING INC2 citations57
US12148279B2Nov 19, 2024
Smoke detector
PIXART IMAGING INC0 citations52
US10631789B2Apr 28, 2020
Biometric detection module and biometric detection device with denoising function
PIXART IMAGING INC0 citations52
US9582118B2Feb 28, 2017
Optical touch system and object detection method therefor
PIXART IMAGING INC0 citations52
US8629856B2Jan 14, 2014
Apparatus and method for acquiring object image of a pointer
PIXART IMAGING INC1 citations52
US12188865B2Jan 7, 2025
Optical machine of smoke detector
PIXART IMAGING INC0 citations51
US10478080B2Nov 19, 2019
Array physiological detection system and operating method thereof
PIXART IMAGING INC0 citations51
US10282036B2May 7, 2019
Optical touch system and image processing method thereof
PIXART IMAGING INC0 citations42
US9984222B2May 29, 2018
Individualized control system utilizing biometric characteristic
PIXART IMAGING INC0 citations42
US10039453B2Aug 7, 2018
Optical detecting module with waterproofing function
PIXART IMAGING INC0 citations40