Patent application number | Description | Published |
20090220230 | Passive Optical Network Based On Reflective Semiconductor Optical Amplifier - Provided is a passive optical network (PON) based on a reflective semiconductor optical amplifier (RSOA). In the PON, seed-light-injection RSOAs are used in an optical line terminal (OLT) to achieve the color-less management of the wavelengths of OLT optic sources, and wavelength reuse RSOAs are used to achieve the color-less management of the wavelengths of ONTs. Therefore, problems related to ONT wavelength management can be eliminated by the wavelength reuse RSOAs, and problems related to OLT wavelength management can be eliminated by the seed-light-injection RSOAs. | 09-03-2009 |
20100209108 | REFLECTIVE SEMICONDUCTOR OPTICAL AMPLIFIER (RSOA), RSOA MODULE HAVING THE SAME, AND PASSIVE OPTICAL NETWORK USING THE SAME - A Reflective Semiconductor Optical Amplifier (RSOA) for compensating for light loss in an optical link, an RSOA module for improving polarization dependency using the RSOA, and a Passive Optical Network (PON) for increasing economical efficiency and practical use of a bandwidth using the RSOA are provided. The PON includes a central office comprising a plurality of optic sources transmitting a downstream signal and a plurality of first receivers receiving an upstream signal; at least one optical network terminal (ONT) including a second receiver receiving the downstream signal and an RSOA which receives the downstream signal, remodulates the downstream signal into the upstream signal, and transmits the upstream signal in loopback mode; and a remote node interfacing the central office with the ONT. The upstream signal and the downstream signal are transmitted between the remote node and the ONT via a single optical fiber. The remote node includes an optical power splitter at its port connected to the ONT. | 08-19-2010 |
20100214651 | REFLECTIVE SEMICONDUCTOR OPTICAL AMPLIFIER (RSOA), RSOA MODULE HAVING THE SAME, AND PASSIVE OPTICAL NETWORK USING THE SAME - A Reflective Semiconductor Optical Amplifier (RSOA) for compensating for light loss in an optical link, an RSOA module for improving polarization dependency using the RSOA, and a Passive Optical Network (PON) for increasing economical efficiency and practical use of a bandwidth using the RSOA are provided. The PON includes a central office comprising a plurality of optic sources transmitting a downstream signal and a plurality of first receivers receiving an upstream signal; at least one optical network terminal (ONT) including a second receiver receiving the downstream signal and an RSOA which receives the downstream signal, remodulates the downstream signal into the upstream signal, and transmits the upstream signal in loopback mode; and a remote node interfacing the central office with the ONT. The upstream signal and the downstream signal are transmitted between the remote node and the ONT via a single optical fiber. The remote node includes an optical power splitter at its port connected to the ONT. | 08-26-2010 |
Patent application number | Description | Published |
20100193034 | ORGANIC-INORGANIC HYBRID JUNCTION DEVICE USING REDOX REACTION AND ORGANIC PHOTOVOLTAIC CELL OF USING THE SAME - Provided are an organic-inorganic hybrid junction device in which organic and inorganic materials are connected by junction, and a depletion layer is formed at a junction interface, and an organic photovoltaic cell using the same. A basic metal oxide solution is applied to a top surface of a P-doped organic layer. The basic metal oxide solution has N-type characteristics. An oxidation-reduction reaction occurs in response to the application of the basic metal oxide solution at a junction interface of the organic layer, and the metal oxide layer is simultaneously gelated. A free charge is removed from a surface region of the P-doped organic layer by the oxidation-reduction reaction at the interface, which is converted into a depletion region. According to the introduction of the depletion region, P-N junction occurs, and thus the device has a diode characteristic in an electrical aspect. Also, an organic photovoltaic cell including the organic layer, the depletion layer and the metal oxide layer is fabricated. | 08-05-2010 |
20110168249 | WET-PROCESSIBLE METAL OXIDE SOLUTION, METHOD OF USING THE SAME, AND ORGANIC PHOTOVOLTAIC CELL OF USING THE SAME - A method of preparing a wet-processible metal oxide solution and a method of fabricating a film using the same are provided. A metal oxide that has been widely used as a photocatalyst is improved and a metal oxide solution having new functionality is formed. The metal oxide solution is transparent, wet-processible, and facilitates electron transfer. The metal oxide solution can be applied in various ways to an electronic device and is well-suited for application to an electronic device using organic materials. Also, a titanium oxide solution functions to remove and block oxygen and moisture. Thus, when it is applied to an electronic device using organic materials that are vulnerable to oxygen and moisture, the lifetime of the device can be increased. | 07-14-2011 |
20150072465 | ORGANIC-INORGANIC HYBRID JUNCTION DEVICE USING REDOX REACTION AND ORGANIC PHOTOVOLTAIC CELL OF USING THE SAME - Provided are an organic-inorganic hybrid junction device in which organic and inorganic materials are connected by junction, and a depletion layer is formed at a junction interface, and an organic photovoltaic cell using the same. A basic metal oxide solution is applied to a top surface of a P-doped organic layer. The basic metal oxide solution has N-type characteristics. An oxidation-reduction reaction occurs in response to the application of the basic metal oxide solution at a junction interface of the organic layer, and the metal oxide layer is simultaneously gelated. A free charge is removed from a surface region of the P-doped organic layer by the oxidation-reduction reaction at the interface, which is converted into a depletion region. According to the introduction of the depletion region, P-N junction occurs, and thus the device has a diode characteristic in an electrical aspect. Also, an organic photovoltaic cell including the organic layer, the depletion layer and the metal oxide layer is fabricated. | 03-12-2015 |
Patent application number | Description | Published |
20090031520 | Upright vacuum cleaner - A vacuum cleaner including a sterilizing unit is provided. The sterilizing unit includes a hot air circulating duct and an air passage switching part. The hot air circulating duct is disposed between a motor chamber and an air inflow part of the dust separating unit to guide air from the motor chamber to the air inflow part of the dust separating unit. The air passage switching part is disposed at a place where the air inflow part, the suction hose and the hot air circulating duct intersect. The air passage switching part is movable between a cleaning position and a sterilizing position to switch a flow of air, the cleaning position being a position that blocks off between the air inflow part and the hot air circulating duct and the sterilizing position being a position that blocks off between the air inflow part and the suction hose. | 02-05-2009 |
20090031522 | Suction port assembly of vacuum cleaner - A vacuum cleaner operable on upright mode and canister mode is provided. The vacuum cleaner includes a suction port assembly comprising a suction port and a suction passage to draw in dust-laden air, a cleaner body housing a dust separating unit and a motor connected with the dust separating unit, an operating handle assembly in fluid communication with the cleaner body through a hose and in fluid communication with an extension pipe, and a carrying handle assembly sliding along the cleaner body to increase in length. If the vacuum cleaner is in the upright mode, the extension pipe is in fluid communication with the suction port assembly, is used as a passage for air to pass toward the cleaner body, and supports the cleaner body, while if the vacuum cleaner is in the canister mode, the extension pipe is separated from the cleaner body. | 02-05-2009 |
20090044359 | Suction brush having hair removal unit for vacuum cleaner - A suction brush having a hair removal unit for a vacuum cleaner is provided. The suction brush includes a brush body having a rear end fluidly connected to a main body of the vacuum cleaner, a suction port on a lower surface of a front end, and a rotation brush inside the suction port; and a hair removal unit detachably connected to the suction port. | 02-19-2009 |
20090044371 | Vacuum cleaner for use in both upright form and canister form - A vacuum cleaner for use in both an upright form and a canister form, which can mount and dismount a cleaner body to and from a suction nozzle assembly is disclosed. The vacuum cleaner includes a suction nozzle assembly to draw in dust or dirt along with air while moving along a surface to be cleaned; a cleaner body having a dust separating unit to separate and collect the dust or dirt from the air drawn in from the surface to be cleaned; a supporting unit hingedly joined to the suction nozzle assembly to support a lower part of the cleaner body to communicate with the suction nozzle assembly; and a locking unit to detachably lock the lower part of the cleaner body to the supporting unit. | 02-19-2009 |
20140196249 | NOZZLE ASSEMBLY HAVING SUBSIDIARY BRUSH UNIT - A nozzle assembly usable with an upright vacuum cleaner, comprising: a nozzle assembly body; a drum brush unit disposed in the nozzle assembly body, the drum brush unit having a drum brush disposed to move dirt or dust adhered to a surface to be cleaned while coming in rotational contact therewith; a subsidiary brush unit disposed in front of the drum brush unit, and the subsidiary brush unit having a subsidiary brush to preliminarily move the dust or dirt adhered to the surface to be cleaned before the drum brush moves the dirt or dust adhered to the surface to be cleaned; and a locking unit disposed to the drum brush unit to selectively fix the subsidiary brush unit to the drum brush unit, wherein the subsidiary brush unit is rotatably connected to the drum brush unit to selectively maintain a contact state or a non-contact state to the surface to be cleaned, and, when the subsidiary brush unit maintains the contact state to the surface to be cleaned, the locking unit fixes the subsidiary brush unit to the drum brush unit. | 07-17-2014 |