|
June 29, 2004, Taipei, Taiwan
–– System General, a leading provider of power
management ICs, today announced, in response to a
lawsuit filed this Monday by Power Integrations, that
all of its products are developed using its own patented
technologies.
System General strongly refutes
the accusation of patent infringement. “We respect
intellectual property rights and are continually developing
new technologies and winning patents for them, “
said Tom Yang, CEO and founder of SG. “Patent violation
is the last thing we would stoop to.”
Throughout the years, System
General has received thirty eight patents worldwide
including twenty three US patents. And more than two
dozens patent applications are currently pending.
System General is currently undertaking legal action
to counter the patent infringement lawsuit from Power
Integrations.
Below is the list of the US
patents owned by System General:
| no
|
Patent
Name |
Patent
No |
Issue
Date |
| 1
|
Primary-side
Regulated Pulse Width Modulation Controller
with Improved Load Regulation |
To
be issued, Appl No. 10/465,161
|
NA
|
| 2
|
Switched
Charged Multiplier-Divider
|
To
be issued, Appl No. 10/640,424
|
NA
|
| 3
|
PWM Controller Having a Modulator for
Saving Power and Reducing Acoustic Noise |
To
be issued, Appl No. 10,249,217 |
NA
|
| 4
|
Capacitive
High-side Switch Driver for a Power Converter
|
To
be issued, Appl No. 10,666,801 |
NA
|
| 5
|
Over-voltage
Crowbar for Lightning Surge and ESD Protection
|
6,744,611
|
06/01/2004
|
| 6
|
Zero
Switching Power Converter Operable as Asymmetrical
Full-Bridge Converter |
6,44,649
|
06/01/2004
|
| 7
|
Discontinuous
Mode PFC Controler Having a Power Saving Modulator
and Operation Method Thereof |
To
be issued, Appl No. 10/357,842 |
NA
|
| 8
|
Current-Driven
PWM Controller Having a Power Saving Means
|
To
be issued, Appl No. 10/249,141 |
NA
|
| 9
|
Low
Drop-out Regulator and an Pole-Zero Cancellation
Method for the Same |
To
be issued, Appl No. 10/617,951 |
NA
|
| 10
|
A PWM Controller Regulating
Output Voltage and Output Current in Primary
Side |
6,721,192
|
04/13/04 |
| 11
|
PWM Controller Having
a Saw-Limiter for Output Power Limit without
Sensing Input Voltage |
6,674,656
|
01/06/04 |
| 12
|
PWM Controller Having
Adaptive Off-time Modulation for Power Saving
|
6,661,679
|
12/09/03 |
| 13
|
PWM Controller for Output
Power Limit of a Power Supply |
6,611,439
|
08/26/03 |
| 14
|
Pulse Width Modulation
Controller Having Frequency Modulation for Power
Converter |
6,597,159
|
07/22/03 |
| 15
|
PWM Controller Having
Off-time Modulation for Power Converter
|
6,545,882
|
04/08/03 |
| 16
|
Method and Apparatus for
Magnetic Amplifier to Reduce Minimum Load Requirement
|
6,501,666
|
12/31/02 |
| 17
|
Power Supply Supervisor
Having a Line Voltage Detector |
6,418,002
|
07/09/02 |
| 18
|
Low Distortion Video Analog
to Digital Converter |
6,353,405
|
03/05/02 |
| 19
|
Fan Speed Pulse Filter
for a PWM Fan |
6,262,549
|
07/17/01 |
| 20
|
Protection Circuit for
a Boost Power Converter |
6,185,082
|
02/06/01 |
| 21
|
Interface Apparatus for
Fan Monitoring and Control |
6,135,718
|
10/24/00 |
| 22
|
Adaptive Slope Compensator
for Current Mode Power Converters
|
5,903,452
|
05/11/99 |
| 23
|
Programmable Pulse Generator
|
4,766,328
|
08/23/88 |
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