Issued Patents All Time
Showing 51–68 of 68 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7605792 | Driving method and circuit for automatic voltage output of active matrix organic light emitting device and data drive circuit using the same | Young-Suk Son, Sang Kyung KIM | 2009-10-20 |
| 7515081 | High resolution digital-to-analog converter | Yong Joon Jeon, Young-Suk Son, Sang Kyung KIM, Jin Yong Jeon, Gun Ho Lee | 2009-04-07 |
| 7414373 | Discharge lamp driving circuit and method of driving a discharge lamp | Sang Kyung KIM, Hee-Seok Han | 2008-08-19 |
| 7388336 | Discharge lamp driving circuit having a signal detection circuit therein | Sang Kyung KIM, Hee-Seok Han | 2008-06-17 |
| 7358811 | CMOS variable gain amplifier for controlling dB linear gain | Jeongwook Koh, Hoon Kim, Kyoung-sik Seol | 2008-04-15 |
| 7339511 | Time division sampling digital to analog converter for driving flat panel display, method of implementing the same, and data driver circuit using the same | Young-Suk Son, Sang Kyung KIM | 2008-03-04 |
| 7283077 | Divide-add circuit and high-resolution digital-to-analog converter using the same | Sang Kyung KIM, Young-Suk Son | 2007-10-16 |
| 7242155 | Discharge lamp driving circuit | Sang Kyung KIM, Hee-Seok Han | 2007-07-10 |
| 7193468 | Active load circuit for low-voltage CMOS voltage gain amplifier with wide bandwidth and high gain characteristic | Jong Kee Kwon, Mun Yang Park, Jong Dae Kim | 2007-03-20 |
| 6727642 | Flat field emitter displays | Nam-Sung Jung, Gyun Chae, Tae Ha Ryoo, Jon Woon Hong, Seung-Tak Ryu +1 more | 2004-04-27 |
| 6437360 | Vacuum field transistor | Ji Yeoul Ryoo, Myeoung Wun Hwang, Min-Hyung Cho, Young Jin Woo, Young-Ki Kim | 2002-08-20 |
| 6396933 | High-fidelity and high-efficiency analog amplifier combined with digital amplifier | Nam-Sung Jung | 2002-05-28 |
| 6316883 | Power-factor correction circuit of electronic ballast for fluorescent lamps | Gyun Chae | 2001-11-13 |
| 6130525 | Hybrid regulator | Nam-Sung Jung | 2000-10-10 |
| 4740881 | Simultaneous recovery commutation current source inverter for AC motors drives | Sun Soon Park | 1988-04-26 |
| 4642747 | Fault-protection apparatus for static AC-to-AC converters and unrestricted frequency changer (UFC) system including such fault-protection apparatus | — | 1987-02-10 |
| 4581696 | Control method and apparatus for a UFC for minimizing input current distortions | Laszlo Gyugyi, Theodore M. Heinrich | 1986-04-08 |
| 4578746 | Interlaced pulse-width modulated unrestricted frequency changer system | Laszlo Gyugyi, Theodore M. Heinrich | 1986-03-25 |