Inventor
Sung Chang Kim
Inventor
Gwangju, KR
Overview
Patents· 37 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Bprimary
H04BTransmission29%
H04QSelecting24%
H04JMultiplex communication20%
G02BOptical elements, systems or apparatus7%
H04LTransmission of digital information, e.g. telegraphic communication7%
G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light2%
A61BDiagnosis1%
F16KValves1%
G01MTesting static or dynamic balance of machines or structures1%
G01NInvestigating or analysing materials by determining their chemical or physical properties1%
PatentTitleYear
10,833,763Bi-directional wireless optical communication apparatus and method thereof202010,648,860Spectroscopic device202010,591,714Endoscopic apparatus for thermal distribution monitoring202010,338,326Multi-channel optical subassembly structure comprising an alignment jig and method of packaging the structure201910,209,443Multi-wavelength transmission apparatus using cylindrical lenses201910,205,524Method and apparatus for setting quiet window in passive optical network system201910,018,791Multi-channel optical subassembly and method of manufacturing the same20189,883,335'Handheld device and method for measuring quality of optical link'20189,860,011'Method and apparatus for selecting wavelength in hybrid passive optical network system'20189,825,710'Method and system for determining and controlling power of optical transmitter of optical network unit for time and wavelength division multiplexing passive optical network'20179,774,404'Apparatus and method for recognizing optical connector connection'20179,755,736'Smart remote node optical network unit and operation method thereof'20179,614,612'Fast protection switching method for passive optical network'20179,609,403'Method of controlling optical network unit (ONU) in sleep mode'20179,553,692'Method and system for determining and controlling power of optical transmitter of optical network unit for time and wavelength division multiplexing passive optical network'20179,553,665'Apparatus and method for detecting optical line fault in passive optical network'20179,197,353'Wavelength selection and configuration method for multi-wavelength optical communication system'20159,184,844'Optical network system and method for controlling optical network system'20159,184,851'Optical line terminal and optical network unit for supporting sleep mode thereof'20159,178,619'Passive optical network (PON)-based system and method for providing handover among optical network terminals (ONTs)'20159,088,382'Optical line terminal of passive optical network, and method for controlling upstream band using the same'20159,002,199'Apparatus and method for monitoring optical line'20159,002,212'Method and apparatus for burst mode clock and data recovery'20158,983,295'Optical line terminal and method of registering optical network terminal thereof'20158,938,167'Apparatus and method for managing dynamic bandwidth allocation to support low-power mode in passive optical network (PON)'20158,934,781'Optical subscriber network'20158,842,999'Optical network unit and method of saving power thereof'20148,768,163'Detecting rogue ONU, OLT and PON system'20148,639,117'Apparatus and method for allocating dynamic bandwidth'20148,630,550'Optical repeater and optical signal amplifying method thereof'20148,619,590'Method for transmitting OAM message and processing error in PON system'20138,542,995'Optical network terminal, method for time syncronization thereof, optical line terminal, and method for managing network thereof'20138,351,436'Apparatus and method for efficient bandwidth allocation on time division multiple access-based passive optical network (TDMA-PON)'20138,346,082'Method of saving power in optical access network'20138,335,217'Method and apparatus for filtering multicast port identifier in gigabit-capable passive optical network (GPON) system'20128,139,937'Automatic optical power control method for OLT in PON'20128,081,661'Dynamic bandwidth allocation device for an optical network and method thereof'2011Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2011–2015Patents assigned to KOREA ELECTRONICS TELECOMM (19)· patent assignee history
2011–2015Patents assigned to YOO HARK (12)· patent assignee history
2011–2020Based in Gwangju, KR· patent location history
2012–2015Patents assigned to KIM SUNG CHANG (11)· patent assignee history
2012–2015Patents assigned to KIM GEUN YONG (10)· patent assignee history
2013–2017Based in Gwangju-si, KR· patent location history
2013Based in Gwangjoo, KR· patent location history
2017–2020Patents assigned to ELECTRONICS & TELECOMMUNICATIONS RES INST (16)· patent assignee history
2019Based in Buk-gu, KR· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KOREA ELECTRONICS TELECOMM | 19 | 2011–2015 |
| ELECTRONICS & TELECOMMUNICATIONS RES INST | 16 | 2017–2020 |
| YOO HARK | 12 | 2011–2015 |
| KIM SUNG CHANGself | 11 | 2012–2015 |
| KIM GEUN YONG | 10 | 2012–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Gwangju, KR | 28 | 2011–2020 |
| Gwangju-si, KR | 7 | 2013–2017 |
| Buk-gu, KR | 1 | 2019 |
| Gwangjoo, KR | 1 | 2013 |