Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9638584 | Differential temperature sensor with sensitivity set by current-mirror and resistor ratios without limiting DC bias | Chun Fai Wong, Leung Ling (Alan) Pun, Kam Hung CHAN | 2017-05-02 |
| 9385542 | Serial multi-battery charger with independent simultaneous charge and discharge | Po Wah Chang, Chi Chiu Tsang, Chik Wai (David) Ng, Yuanzhe (Kevin) Xu, Wai Kei (Timothy) OR | 2016-07-05 |
| 9385625 | Quad-array diode-less RF-to-DC rectifying charge-pump converter for energy harvesting | Yat Tung Lai, Ka Hung Kwok | 2016-07-05 |
| 9306461 | LED driver with small output ripple without requiring a high-voltage primary-side electrolytic capacitor | Po Wah Chang, Chik Wai (David) Ng, Hing Kit Kwan, Wai Kit (Victor) So, Shaobin WU | 2016-04-05 |
| 8964436 | Self-starting transistor-only full-wave rectifier for on-chip AC-DC conversion | Kwai Chi Chan, Yunlong Li, Lee-Lung Yang | 2015-02-24 |
| 8864377 | CMOS temperature sensor with sensitivity set by current-mirror and resistor ratios without limiting DC bias | Chun Fai Wong, Leung Ling (Alan) Pun, Kam Hung CHAN | 2014-10-21 |
| 8797776 | Diode-less full-wave rectifier for low-power on-chip AC-DC conversion | Chun Fai Wong, Leung Ling (Alan) Pun, Ho Ming (Karen) Wan | 2014-08-05 |
| 8643337 | Single-power-transistor battery-charging circuit using voltage-boosted clock | Yat To Wong, Ho Ming (Karen) Wan, Chik Wai (David) Ng | 2014-02-04 |
| 8643988 | ESD power clamp using a low-voltage transistor to clamp a high-voltage supply in a mixed-voltage chip | — | 2014-02-04 |
| 8581519 | Current-switching LED driver using DAC to ramp bypass currents to accelerate switching speed and reduce ripple | Lee-Lung Yang, Yunlong Li, Weina Zhou | 2013-11-12 |
| 8300431 | Constant-current control module using inverter filter multiplier for off-line current-mode primary-side sense isolated flyback converter | Chik Wai (David) Ng, Hing Kit Kwan, Po Wah Chang, Wai Kit (Victor) So | 2012-10-30 |
| 8258864 | Ultra low voltage multi-stage high-speed CMOS comparator with autozeroing | Kwai Chi Chan, Yat To Wong, Ho Ming (Karen) Wan, Kam Chuen Wan | 2012-09-04 |
| 8258852 | Bootstrapped high-side driver control without static DC current for driving a motor bridge circuit | Lap Chi (David) LEUNG, Yat Tung Lai, Chun Fai Wong, Kam Hung CHAN | 2012-09-04 |
| 8193854 | Bi-directional trimming methods and circuits for a precise band-gap reference | Xiao Kuang, Kam Chuen Wan, Kwai Chi Chan, Yat To Wong | 2012-06-05 |
| 8188798 | Programmable electro-magnetic-interference (EMI) reduction with enhanced noise immunity and process tolerance | Chi Tak (Gerry) Leung, Chik Wai (David) Ng, Hing Kit Kwan, Wai Kit (Victor) So, Po Wah Chang +1 more | 2012-05-29 |
| 8179455 | Optical black-level cancellation for optical sensors using open-loop sample calibration amplifier | Lap Chi (David) LEUNG, Yat Tung Lai, Chun Fai Wong, Kam Hung CHAN | 2012-05-15 |
| 8072721 | ESD protection using a capacitivly-coupled clamp for protecting low-voltage core transistors from high-voltage outputs | Chik Wai (David) Ng, Wai Kit (Victor) So, Hing Kit Kwan | 2011-12-06 |
| 7999512 | Single-power-transistor battery-charging circuit using voltage-boosted clock | Yat To Wong, Ho Ming (Karen) Wan, Chik Wai (David) Ng | 2011-08-16 |
| 7854708 | Multiple joint linkage device | Kai Yu Tong, Rong-Jyh Song, Chiu Hoi Lam, Wai Man Tam, Tak Chi Lee +4 more | 2010-12-21 |
| 7812757 | Hybrid analog-to-digital converter (ADC) with binary-weighted-capacitor sampling array and a sub-sampling charge-redistributing array for sub-voltage generation | Yat To Wong, Kam Chuen Wan | 2010-10-12 |
| 7795976 | Slew-rate-enhanced error amp with adaptive transconductance and single dominant pole shared by main and auxiliary amps | Yat To Wong, Chik Wai (David) Ng, Ho Ming (Karen) Wan, Kam Chuen Wan | 2010-09-14 |
| 7764215 | Multi-stage comparator with offset canceling capacitor across secondary differential inputs for high-speed low-gain compare and high-gain auto-zeroing | Ho Ming (Karen) Wan, Yat To Wong, Kwai Chi Chan | 2010-07-27 |
| 7741981 | Dual-use comparator/op amp for use as both a successive-approximation ADC and DAC | Ho Ming (Karen) Wan, Yat To Wong, Kwai Chi Chan, Hok Mo Yau, Tin Ho (Andy) Wu | 2010-06-22 |
| 7710094 | Current-mode-controlled current sensor circuit for power switching converter | Yat To Wong, Xiao Kuang, Kam Chuen Wan | 2010-05-04 |
| 7705685 | Low-voltage oscillator with capacitor-ratio selectable duty cycle | Chik Wai (David) Ng, Yat To Wong, Ho Ming (Karen) Wan | 2010-04-27 |