Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8442400 | Wavelength division multiplexed-passive optical network capable of high-speed transmission of an optical signal by using modulation format having high spectral efficiency | Chang Hee Lee, Ki-Man Choi, Sil-Gu Mun | 2013-05-14 |
| 8290370 | Wavelength division multiplexing passive optical network for providing both of broadcasting service and communication service and central office used thereof | Chang Hee Lee, Ki-Man Choi | 2012-10-16 |
| 8078061 | Wavelength division multiplexed-passive optical network capable of high-speed transmission of an optical signal by using modulation format having high spectral efficiency | Chang Hee Lee, Ki-Man Choi, Sil-Gu Mun | 2011-12-13 |
| 7773838 | Method and network architecture for upgrading legacy passive optical network to wavelength division multiplexing passive optical network based next-generation passive optical network | Chang Hee Lee, Ki-Man Choi, Sil-Gu Mun, Hoon-Keun Lee | 2010-08-10 |