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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Jung; Dae-Kwang
Address:
Suwon-si, KR
No. of patents:
16
Patents:












Patent Number Title Of Patent Date Issued
8204383 Wireless communication interface for portable wireless terminal June 19, 2012
A wireless communication interface for a portable wireless terminal and a system for wirelessly communicating by a portable wireless terminal with another device via a free space. The interface facilitates aligning the portable wireless device with another devices for improved communicat
8117006 Method for measuring position of portable terminal and indoor illuminating apparatus for the sam February 14, 2012
Provided is a method of measuring the position of a portable terminal, comprising detecting indoor illuminating light, and outputting an electric signal corresponding to the detected indoor illuminating light, obtaining a plurality of data frames from the output electrical signal, an
8059112 Apparatus and method for broadcasting visible light information in visible light communication November 15, 2011
Provided is a method for broadcasting visible light information in visible light communication. The method includes determining a time interval for a simultaneous signal and a time interval for an individual signal of information to be displayed on a display device; simultaneously mo
8019230 Method for providing visible light communication in a visible light communication system September 13, 2011
A method of providing a visible light communication in a data link layer of a visible light communication system adopting an infrared communication link connection protocol includes: broadcasting a discovery exchange station identification (D-XID) frame; generating a visible frame to
8005366 Reconnection method in peripheral interface using visible light communication August 23, 2011
A reconnection method and device for a peripheral interface using VLC provide a protocol for when a communication link between a primary device and a secondary device is disconnected. The primary device generates an R-XID message including reconnection information and a warning indicatio
7783198 Passive optical network August 24, 2010
A passive optical network includes: a central office for generating multiplexed downstream optical signals and receiving an upstream optical signal; a plurality of optical network units for receiving a corresponding downstream optical signal and generating subcarrier channels carryin
7663501 Apparatus and method of controlling emitting color of visible light according to a current commu February 16, 2010
An apparatus and method for controlling the emitted color of visible light according to the current communication state in a visible light communication (VLC) device. The method includes storing one or more communication states and emitting colors that are correspondingly matched to
7639949 TDM PON and dynamic bandwidth allocation method thereof December 29, 2009
A TDM PON including: an optical line terminal; a remote node including multiple secondary optical distributors connected to multiple optical network units; and the multiple optical network units generating and outputting a corresponding upstream optical signal. Each of the secondary
7415205 Wavelength division multiplexed self-healing passive optical network using wavelength injection August 19, 2008
A wavelength division multiplexed self-healing passive optical network using a wavelength injection method includes a central office for coupling modulated multiplexed optical signals (MMOS) and broadband optical signals (BOS)for an upstream light source into one signal transmitted t
7398021 Optical transmitter and passive optical network using the same July 8, 2008
An optical transmitter including a multi-lambda source to output injection light consisting of a plurality of injection wavelengths in channels, a circulator having a first port, a second port, and a third port, the circulator receiving the injection light at the first port, and outp
7369588 Broad-band optical semiconductor device and a method for manufacturing the same May 6, 2008
Disclosed is an optical semiconductor device that provides an optical gain or optical loss depending on application of electric current. The optical semiconductor device comprises: a lower clad layer; an active layer disposed on the lower clad layer, the active layer generating optical
7254340 Apparatus and method for tracking optical wavelength in WDM passive optical network using loop-b August 7, 2007
An optical wavelength tracking apparatus and method in a wavelength division multiplexed (WDM) passive optical network (PON) in which a central office (CO) having a multi-frequency light source is connected to a plurality of optical network units (ONUs) having loop-back light sources
7228021 Bidirectional optical add/drop multiplexer and wavelength division multiplexed ring network usin June 5, 2007
Disclosed is a bidirectional optical add/drop multiplexer that includes a first filter for reflecting a first optical signal pre-selected among input forward optical signals and transmitting the remaining forward optical signals, a second filter for reflecting a second optical signal
7224519 Low noise multi-wavelength light source and wavelength division multiplexing system using same May 29, 2007
A multi-wavelength light source includes a substrate, a fabry-perot laser laminated on the substrate that is operated by driving current below a predetermined threshold current to generate multi-wavelength light including a plurality of peaks whose wavelengths and spacing are identic
7209609 Light source apparatus for WDM optical communication and optical communication system April 24, 2007
A light source apparatus for use with optical communication using external-injection light sources, and an optical communication system using the light source apparatus. The light source apparatus for optical communication includes external-injection light sources, and a multiplexer/
7073956 Optical transceiver and passive optical network using the same July 11, 2006
Disclosed are an optical transceiver and an passive optical network using the same. The optical transceiver includes a polarization splitter for splitting injected light input from an outside of the optical transceiver into a first polarization component and a second polarization compone










 
 
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