Hwangsoo CHOI

Person

Fullerton, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
EMI suppression with shielded common mode choke
- Patent number 8,941,456
- Issue date Jan 27, 2015
- Microsemi Corporation
- Hwangsoo Choi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Flyback with switching frequency responsive to load and input voltage
- Patent number 8,598,808
- Issue date Dec 3, 2013
- Microsemi Corporation
- Shiju Wang
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Dimming input suitable for multiple dimming signal types
- Patent number 8,482,218
- Issue date Jul 9, 2013
- Microsemi Corporation
- Shiju Wang
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Non-dissipative start up circuit
- Patent number 8,363,436
- Issue date Jan 29, 2013
- Microsemi Corporation
- Shiju Wang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Voltage regulation loop with variable gain control for inverter cir...
- Patent number 7,414,371
- Issue date Aug 19, 2008
- Microsemi Corporation
- Hwangsoo Choi
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Shoot-through prevention circuit for passive level-shifter
- Patent number 7,313,006
- Issue date Dec 25, 2007
- Microsemi Corporation
- Hwangsoo Choi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for controlling minimum brightness of a fluore...
- Patent number 6,946,806
- Issue date Sep 20, 2005
- Microsemi Corporation
- Hwangsoo Choi
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Shorted lamp detection in backlight system
- Patent number 6,870,330
- Issue date Mar 22, 2005
- Microsemi Corporation
- Hwangsoo Choi
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method and apparatus for controlling minimum brightness of a fluore...
- Patent number 6,654,268
- Issue date Nov 25, 2003
- Microsemi Corporation
- Hwangsoo Choi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for controlling minimum brightness of a floure...
- Patent number 6,469,922
- Issue date Oct 22, 2002
- Linfinity Microelectronics
- Hwangsoo Choi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for controlling minimum brightness of a fluore...
- Patent number 6,307,765
- Issue date Oct 23, 2001
- Linfinity Microelectronics
- Hwangsoo Choi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
EMI SUPPRESSION WITH SHIELDED COMMON MODE CHOKE
- Publication number 20130069615
- Publication date Mar 21, 2013
- MICROSEMI CORPORATION
- Hwangsoo CHOI
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
FLYBACK WITH SWITCHING FREQUENCY RESPONSIVE TO LOAD AND INPUT VOLTAGE
- Publication number 20120025735
- Publication date Feb 2, 2012
- MICROSEMI CORPORATION
- Shiju WANG
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
DIMMING INPUT SUITABLE FOR MULTIPLE DIMMING SIGNAL TYPES
- Publication number 20110187283
- Publication date Aug 4, 2011
- MICROSEMI CORPORATION
- Shiju WANG
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
NON-DISSIPATIVE START UP CIRCUIT
- Publication number 20110141775
- Publication date Jun 16, 2011
- MICROSEMI CORPORATION
- Shiju WANG
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
Shoot-through prevention circuit for passive level-shifter
- Publication number 20060256589
- Publication date Nov 16, 2006
- Hwangsoo Choi
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Shorted lamp detection in backlight system
- Publication number 20040189216
- Publication date Sep 30, 2004
- Hwangsoo Choi
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
Method and apparatus for controlling minimum brightness of a fluore...
- Publication number 20030058670
- Publication date Mar 27, 2003
- Hwangsoo Choi
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
Method and apparatus for controlling minimum brightness of a fluore...
- Publication number 20020031002
- Publication date Mar 14, 2002
- Hwangsoo Choi
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Hwangsoo CHOI

Person

Patents Grantslast 30 patents

EMI suppression with shielded common mode choke

Flyback with switching frequency responsive to load and input voltage

Dimming input suitable for multiple dimming signal types

Non-dissipative start up circuit

Voltage regulation loop with variable gain control for inverter cir...

Shoot-through prevention circuit for passive level-shifter

Method and apparatus for controlling minimum brightness of a fluore...

Shorted lamp detection in backlight system

Method and apparatus for controlling minimum brightness of a fluore...

Method and apparatus for controlling minimum brightness of a floure...

Method and apparatus for controlling minimum brightness of a fluore...

Patents Applicationslast 30 patents

EMI SUPPRESSION WITH SHIELDED COMMON MODE CHOKE

FLYBACK WITH SWITCHING FREQUENCY RESPONSIVE TO LOAD AND INPUT VOLTAGE

DIMMING INPUT SUITABLE FOR MULTIPLE DIMMING SIGNAL TYPES

NON-DISSIPATIVE START UP CIRCUIT

Shoot-through prevention circuit for passive level-shifter

Shorted lamp detection in backlight system

Method and apparatus for controlling minimum brightness of a fluore...

Method and apparatus for controlling minimum brightness of a fluore...