Issued Patents All Time
Showing 1–25 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10805224 | Parallel scheduling method and parallel scheduling apparatus | Kyeong-Eun HAN, Dae Ub KIM, Chan Sung PARK, Jong Tae Song, Joon Ki LEE | 2020-10-13 |
| 9787401 | Mode division multiplexed passive optical network (MDM-PON) apparatus, and transmission and reception method using the same | Sun Hyok Chang, Hyun Jae Lee, Chan Gyo HAN | 2017-10-10 |
| 8681885 | OFDM receiver and method for compensating for I/Q imbalance | Hwan Seok CHUNG, Sun Hyok Chang | 2014-03-25 |
| 8565620 | Apparatus for receiving optical signal and method of controlling phase offset for differential quadrature phase shift keying | Hwan Seok CHUNG, Sun Hyok Chang, Jyung Chan Lee | 2013-10-22 |
| 8437636 | Methods of transmitting and receiving multicast or broadcast frame in OLT and ONU for WDM-PON, WDM-PON system, and OLT for WDM-PON | Kyeong-Eun HAN | 2013-05-07 |
| 8406625 | Apparatus and method for cross-connecting optical path in wavelength division multiplexing system | Hwan Seok CHUNG, Sun Hyok Chang, Sang Soo Lee | 2013-03-26 |
| 8355612 | Active alignment method for multi-channel optical transmitter and receiver, which has an optical signal generator with an optical multiplexer, which has an optical signal generator with an optical multiplexer | Sae-Kyoung KANG, Joon Ki LEE, Jyung Chan Lee | 2013-01-15 |
| 8260154 | Digital equalization apparatus and method for coherent optical receiver | Sun Hyok Chang, Hwan Seok CHUNG | 2012-09-04 |
| 8254291 | Ethernet device and lane operating method | Kye-Hyun Ahn, Seung Hwan Kim, Yong Tae Kim, Kyeong-Eun HAN | 2012-08-28 |
| 8224190 | Channel assignment method and apparatus for wavelength-division-multiplexed transmission system | Hwan Seok CHUNG, Sun Hyok Chang, Sang Soo Lee | 2012-07-17 |
| 8116623 | Multi-ring network operating method and system | Hwan Seok CHUNG, Sun Hyok Chang, Sang Soo Lee | 2012-02-14 |
| 8036527 | Apparatus and method for protection switching of optical channel | Sun Hyok Chang, Hwan Seok CHUNG, Sang Soo Lee | 2011-10-11 |
| 7917040 | Method and apparatus for controlling wavelength tuning of optical source for optical communication | Jyung Chan Lee, Moo Jung Chu, Jun Ki Lee | 2011-03-29 |
| 7755073 | Acousto-optic filter and optical CDMA system using the same | Bong Kyu Kim, Sang Jo Park, Heuk Park | 2010-07-13 |
| 7676155 | Dynamic wavelength allocation device using 3R wavelength converter having limited wavelength conversion range and method thereof | Yun Hee Cho | 2010-03-09 |
| 7486890 | Optical transmission apparatus and method | Hyun Jae Lee | 2009-02-03 |
| 7394983 | Method and apparatus for detecting optical switch fault by monitoring optical output transitions | Wang-Joo Lee, Sung-hoon Kwak | 2008-07-01 |
| 7356220 | Apparatus and method for reducing signal noise and OCDMA receiver and method | Hwan Seok CHUNG, Heuk Park | 2008-04-08 |
| 7313333 | Apparatus for controlling decision threshold voltage to optical receiver | Jyung Chan Lee, Seung Il Myong, Joon Ki LEE | 2007-12-25 |
| 7266309 | Apparatus and method for stabilizing bias voltage for pulse generating modulator | Youn Jang, Jin Soo Han | 2007-09-04 |
| 7133196 | Erbium doped fiber amplifier for reducing transient phenomena of OSNR and BER in dynamic WDM system and amplifying method thereof | Won Kyoung Lee, Heuk Park | 2006-11-07 |
| 7075694 | Apparatus and method for automatically correcting bias voltage for carrier suppressed pulse generating modulator | Youn Jang, Jyung Chan Lee, Seung Il Myong | 2006-07-11 |
| 7049902 | Tunable high-order bessel low pass filter | Seung Il Myong, Jyung Chan Lee, Sang-Kyu Lim | 2006-05-23 |
| 6928243 | Optical performance monitoring apparatus for a WDM optical communication system | Ji Wook YOUN, Sung-Un Lee, Jong Hyun Lee | 2005-08-09 |
| 6862303 | Multiwavelength locking method and apparatus using acousto-optic tunable filter | Bong Kyu Kim, Byoung Sung Kim, Hae Geun Kim | 2005-03-01 |