Inventor
Chia-Wei Liao
Inventor
Hsinchu County, TW
Overview
Patents· 32 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer23%
H05BElectric heating15%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications13%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems11%
B62MRider propulsion of wheeled vehicles or sledges6%
G05FSystems for regulating electric or magnetic variables6%
H03MCoding6%
B62KCycles4%
G01RMeasuring electric variables4%
H01HElectric switches4%
PatentTitleYear
10,802,250Optical image lens20209,337,716'Power supply circuit with PFC function, and automatic gain control circuit therefor and control method thereof'20169,287,796'Isolated power converter circuit and control method thereof'20169,081,401'Switching regulator and control circuit and control method thereof'20159,055,646'Light emitting device driver circuit and control method thereof'20158,968,130'Bicycle cogset with support element'20158,916,126'Method of fabricating graphite flakes'20148,896,319'Light emitting device control circuit and short detection circuit thereof'20148,884,537'Active bleeder circuit triggering TRIAC in all phase and light emitting device power supply circuit and TRIAC control method using the active bleeder circuit'20148,780,587'Switching regulator and control circuit and control method thereof'20148,710,755'Light emitting device power supply circuit, and light emitting device driver circuit and control method thereof'20148,661,932'Speed control device for speed changing device of bicycle'20148,659,239'Circuit and method for providing absolute information for floating grounded integrated circuit'20148,511,200'Speed control device for bicycle'20138,384,305'LED driver with direct AC-DC conversion and control, and method and integrated circuit therefor'20138,300,670'Method for deriving precise control over laser power of an optical pickup unit, and associated automatic power calibration circuit'20128,253,476'Trimmer circuit and method'20128,217,632'Synchronous driver circuit and integrated circuit for use therein'20128,149,044'Trimmer circuit and method'20128,149,146'Automatic power control system for optical disc drive and method thereof'20128,089,834'Apparatus for controlling servo signal gains of an optical disc drive and method of the same'20127,991,030'Method for deriving precise control over laser power of an optical pickup unit, and associated automatic power calibration circuit'20117,911,891'Apparatus for controling servo signal gains of an optical disc drive and method of same'20117,903,006'Automatic power control system for optical disc drive and method thereof'20117,839,667'Adaptive leading-edge blanking circuit and method for switching mode power converter'20107,796,480'Apparatus and methods for light spot servo signal detection'20107,706,219'Signal processing apparatus and method for an optical disc drive'20107,706,238'Laser power control system and method'20107,697,399'Power control system and related method'20107,693,011'Wobble detection circuit and method for processing wobble signals'20107,474,235'Automatic power control system for optical disc drive and method thereof'20097,218,509'Handset sliding structure'2007Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2009–2012Patents assigned to MEDIATEK INC (12)· patent assignee history
2009–2012Based in Hsinchu County, TW· patent location history
2010–2015Patents assigned to RICHTEK TECHNOLOGY CORP (9)· patent assignee history
2010–2013Based in San Jose, CA, US· patent location history
2012–2016Patents assigned to LIAO CHIA-WEI (19)· patent assignee history
2012–2016Patents assigned to LIU JING-MENG (10)· patent assignee history
2014–2015Patents assigned to HSIU LENG-NIEN (5)· patent assignee history
2014–2016Based in Zhubei City, TW· patent location history
2014–2020Based in Taichung, TW· patent location history
2014Based in Taoyuan County, TW· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| LIAO CHIA-WEIself | 19 | 2012–2016 |
| MEDIATEK INC | 12 | 2009–2012 |
| LIU JING-MENG | 10 | 2012–2016 |
| RICHTEK TECHNOLOGY CORP | 9 | 2010–2015 |
| HSIU LENG-NIEN | 5 | 2014–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hsinchu County, TW | 12 | 2009–2012 |
| Zhubei City, TW | 8 | 2014–2016 |
| San Jose, California, US | 5 | 2010–2013 |
| Taichung, TW | 3 | 2014–2020 |
| Taoyuan County, TW | 1 | 2014 |