Inventor · disambiguated record
Cheng-Nan Tsai
Also filed as: TSAI CHENG-NAN
38 granted patents·15 pending applications·72 citations·filing 2006–2024
96Inventor score
Top patents by PatentIndex Score
53 records- 0194US10092244B2Biometric detection module with denoising function and biometric detection method thereofPIXART IMAGING INC·Filed 2015·Granted Oct 9, 2018·33 cites·18 claims
- 0293US11913864B2Smoke detector with increased scattered light intensityPIXART IMAGING INC·Filed 2022·Granted Feb 27, 2024·1 cites·14 claims
- 0393US11615684B2Smoke detectorPIXART IMAGING INC·Filed 2021·Granted Mar 28, 2023·3 cites·7 claims
- 0491US10168220B2Wearable infrared temperature sensing devicePIXART IMAGING INC·Filed 2016·Granted Jan 1, 2019·5 cites·20 claims
- 0590US11918329B2Array physiological detection systemPIXART IMAGING INC·Filed 2021·Granted Mar 5, 2024·2 cites·18 claims
- 0688US12203838B2Smoke detector having light source surrounded by wall with varied heightsPIXART IMAGING INC·Filed 2024·Granted Jan 21, 2025·0 cites·20 claims
- 0788US10670465B2Wearable infrared temperature sensing devicePIXART IMAGING INC·Filed 2018·Granted Jun 2, 2020·2 cites·10 claims
- 0886US11213217B2Physiological detection system and operating method thereofPIXART IMAGING INC·Filed 2019·Granted Jan 4, 2022·5 cites·18 claims
- 0986US2025093248A1Smoke detector with light source illuminating toward light sensorPIXART IMAGING INC·Filed 2024·Application pending·0 cites
- 1083US2025123149A1Handheld electronic productPIXART IMAGING INC·Filed 2024·Application pending·0 cites
- 1182US2025067667A1Smoke detector reducing false alarm ratePIXART IMAGING INC·Filed 2024·Application pending·0 cites
- 1280US12222246B2Wearable devicePIXART IMAGING INC·Filed 2023·Granted Feb 11, 2025·0 cites·11 claims
- 1378US8299735B2Fan system and brake control circuit thereofHORNG ALEX·Filed 2010·Granted Oct 30, 2012·6 cites·42 claims
- 1476US12188865B2Optical machine of smoke detectorPIXART IMAGING INC·Filed 2022·Granted Jan 7, 2025·0 cites·12 claims
- 1576US12106649B2Smoke detector capable of distinguishing smoke and particlesPIXART IMAGING INC·Filed 2023·Granted Oct 1, 2024·0 cites·20 claims
- 1676US11020013B2Array physiological detection system and devicePIXART IMAGING INC·Filed 2018·Granted Jun 1, 2021·2 cites·14 claims
- 1776US9818245B2Individualized control system utilizing biometric characteristicPIXART IMAGING INC·Filed 2016·Granted Nov 14, 2017·4 cites·17 claims
- 1875US11719579B2Wearable infrared temperature sensing devicePIXART IMAGING INC·Filed 2022·Granted Aug 8, 2023·0 cites·9 claims
- 1973US11854361B2Smoke detector with protrusionsPIXART IMAGING INC·Filed 2023·Granted Dec 26, 2023·0 cites·5 claims
- 2072US9052780B2Optical touch screen system and sensing method for the sameLU CHIH HUNG·Filed 2011·Granted Jun 9, 2015·3 cites·25 claims
- 2170US11872014B2Optical detection device for physiological characteristic identificationPIXART IMAGING INC·Filed 2021·Granted Jan 16, 2024·0 cites·4 claims
- 2269US11268859B2Wearable infrared temperature sensing devicePIXART IMAGING INC·Filed 2020·Granted Mar 8, 2022·0 cites·9 claims
- 2368US12148279B2Smoke detectorPIXART IMAGING INC·Filed 2022·Granted Nov 19, 2024·0 cites·14 claims
- 2465US8629856B2Apparatus and method for acquiring object image of a pointerPIXART IMAGING INC·Filed 2013·Granted Jan 14, 2014·1 cites·16 claims
- 2563US9354749B2Optical touch system with brightness compensation and brightness compensation method thereofPIXART IMAGING INC·Filed 2013·Granted May 31, 2016·2 cites·13 claims
- 2662US2024159642A1Smoke detector with anti-insect function and spoiler functionPIXART IMAGING INC·Filed 2024·Application pending·0 cites
- 2760US11284799B2Optical detection device for physiological characteristic identificationPIXART IMAGING INC·Filed 2018·Granted Mar 29, 2022·0 cites·7 claims
- 2859US8477119B2Optical touch system, apparatus and method for calculating the position of an objectTSAI CHENG-NAN·Filed 2011·Granted Jul 2, 2013·1 cites·12 claims
- 2957US12046114B2Smoke detection device with preferred detection accuracyPIXART IMAGING INC·Filed 2022·Granted Jul 23, 2024·0 cites·13 claims
- 3056US10631789B2Biometric detection module and biometric detection device with denoising functionPIXART IMAGING INC·Filed 2018·Granted Apr 28, 2020·0 cites·19 claims
- 3154US10282036B2Optical touch system and image processing method thereofPIXART IMAGING INC·Filed 2016·Granted May 7, 2019·0 cites·13 claims
- 3251US9582118B2Optical touch system and object detection method thereforPIXART IMAGING INC·Filed 2016·Granted Feb 28, 2017·0 cites·11 claims
- 3350US10478080B2Array physiological detection system and operating method thereofPIXART IMAGING INC·Filed 2015·Granted Nov 19, 2019·0 cites·15 claims
- 3450US7501781B2Pulse-width-modulation motor drive circuit having potential limiterSUNONWEALTH ELECTR MACH IND CO·Filed 2006·Granted Mar 10, 2009·2 cites·19 claims
- 3550US2016092032A1Optical touch screen system and computing method thereofPIXART IMAGING INC·Filed 2015·Application pending·0 cites
- 3650US2012327035A1Optical touch system and image processing method thereofSU TZUNG MIN·Filed 2012·Application pending·0 cites
- 3748US8860695B2Optical touch system and electronic apparatus including the sameSU TZUNG MIN·Filed 2012·Granted Oct 14, 2014·0 cites·29 claims
- 3848US8451253B2Apparatus and method for acquiring object image of a pointerTSAI CHENG-NAN·Filed 2010·Granted May 28, 2013·0 cites·16 claims
- 3947US2010171694A1Electronic Apparatus with Virtual Data Input DeviceLU CHIH-HUNG·Filed 2009·Application pending·0 cites
- 4047US2012127129A1Optical Touch Screen System and Computing Method ThereofSU TZUNG MIN·Filed 2011·Application pending·0 cites
- 4146US9292130B2Optical touch system and object detection method thereforTSAI CHENG NAN·Filed 2011·Granted Mar 22, 2016·0 cites·15 claims
- 4246US9170682B2Image processing method for optical touch systemSU TZUNG MIN·Filed 2012·Granted Oct 27, 2015·0 cites·22 claims
- 4344US9984222B2Individualized control system utilizing biometric characteristicPIXART IMAGING INC·Filed 2017·Granted May 29, 2018·0 cites·20 claims
- 4444US9046960B2Light path adjusting assembly and optical touch device using the sameLAI HUNG-CHING·Filed 2012·Granted Jun 2, 2015·0 cites·12 claims
- 4542US2018360382A1Optical measurement device with pressure feedback functionPIXART IMAGING INC·Filed 2017·Application pending·0 cites
- 4641US2018049702A1Semi-penetrating type optical detection apparatuses and method for physiological characteristic(s)PIXART IMAGING INC·Filed 2016·Application pending·0 cites
- 4741US2012319998A1Reflecting sheet and optical touch device using the sameLAI HUNG-CHING·Filed 2012·Application pending·0 cites
- 4839US10039453B2Optical detecting module with waterproofing functionPIXART IMAGING INC·Filed 2015·Granted Aug 7, 2018·0 cites·9 claims
- 4939US9151599B2Image sensing module adapted to compensate temperature variationTSAI CHENG NAN·Filed 2011·Granted Oct 6, 2015·0 cites·7 claims
- 5039US2012068940A1Electronic deviceWANG CHUAN WEI·Filed 2010·Application pending·0 cites
Showing the top 50 of 53 patent records by PatentIndex Score.
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