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Moon, Daejeon-Si
Ae-Kyeung Moon, Daejeon-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20100114803 | APPARATUS AND METHOD FOR MODELING USER'S SERVICE USE PATTERN - Provided are an apparatus and method for learning and modeling a user's service use pattern. The method includes: collecting information about a service selected by the user and situation information of the user when selecting the service; learning the user's service use pattern based on the collected information; and updating a learning value of a corresponding context-service pair in a user model, which is comprised of context-service pairs, based on the learning result, wherein the situation information of the user includes one or more contexts. | 05-06-2010 |
| 20110119217 | APPARATUS AND METHOD FOR RECOMMENDING SERVICE - Provided are a service recommending apparatus and method. The service recommending method uses situation information, such as location information of a terminal possessed by a user and a user profile, to deduce the user's activity, predicts a service that is expected to be preferred by the user according to the user's situation, and provides the result of the prediction to the user. The location information of the terminal is acquired from a network server such as a location information server through an open API gateway. | 05-19-2011 |
Gun Woo Moon, Daejeon-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20100002471 | PHASE SHIFT FULL BRIDGE CONVERTER WITH REDUCED CURRENT STRESS - A phase shift full bridge converter with a reduced current stress includes: a switching unit that switches an input voltage; a transformer that includes a first capacitor serially connected to, and having a primary side and a secondary side; an auxiliary circuit unit that includes a first switch, a second switch, and a second capacitor, which are connected in parallel to the secondary side of the transformer; and a rectification unit that is connected to the auxiliary circuit unit, with an output inductor being removed. | 01-07-2010 |
| 20100020578 | ADAPTER POWER SUPPLY - An advantage of the present invention is to provide an adapter power supply which varies a link voltage of DC power serving an input power of a DC/DC converter according to variation of a load current estimated by measuring a secondary current using a lossless current measurement technique at a primary terminal of a transformer of the DC/DC converter and thus presuming a load current of an output power. | 01-28-2010 |
| 20100033993 | TRANSFORMER HAVING RESONANT INDUCTANCE - Provided is a transformer having resonant inductance, the transformer including a core that includes a first leg formed in one side thereof, a second leg which is formed in the other side thereof so as to be electromagnetically coupled to the first leg, and a third leg which is formed between the first and second legs so as to be electromagnetically coupled to the first and second legs; a primary winding that is wound around one side of the third leg; a secondary winding that is wound around the other side of the third leg so as to induce power through electromagnetic induction with the primary winding; and a resonant inductance winding that is wound around the outside of the core so as not to be magnetically induced by magnetic fluxes generated from the primary and secondary windings. | 02-11-2010 |
| 20100156509 | SWITCHING MODE POWER SUPPLY FOR REDUCING STANDBY POWER - In accordance with one aspect of the present invention to achieve the object, there is provided a switching mode power supply for reducing standby power including an EMI(Electro-Magnetic Interference) filter unit for removing a high frequency noise component by being connected to an input power source; a PFC(Power Factor Correction) unit connected to the EMI filter unit; a DC/DC unit connected to the PFC unit; a synchronous rectifier unit connected to the DC/DC unit; a PFC controller connected to the PFC unit and provided with an overvoltage protection stage; a DC/DC controller which is connected to the DC/DC unit and generates a burst mode operation signal; a synchronous rectifier controller for controlling the synchronous rectifier unit by being connected to the synchronous rectifier unit; an error signal generation unit for sensing an output voltage to generate an error signal and then transmitting the error signal to the DC/DC controller; a control unit for synchronizing the DC/DC unit and the PFC unit so that the PFC unit also operates in a burst mode if the DC/DC unit operates in the burst mode by connecting the DC/DC controller and the overvoltage protection stage of the PFC controller. | 06-24-2010 |
| 20100246225 | POWER SUPPLY FOR SERVER - The present invention provides a power supply for a server including: a PFC (Power Factor Correction) unit for meeting harmonic regulation by being connected to an input power source; a DC/DC unit including a switching stage provided with at least one switching device to switch a voltage of a link capacitor as an output voltage of the PFC unit to a predetermined operation frequency and a DC/DC stage driven by the switching stage; a DC/DC control unit for controlling the DC/DC unit by being connected to the switching device; and a frequency varying circuit unit for supplying the DC/DC control unit with a frequency control signal to adjust the operation frequency of the switching device according to load after detecting an output current of the link capacitor and acquiring load information. | 09-30-2010 |
| 20100302812 | ADAPTER POWER SUPPLY - The present invention relates to an adapter power supply, which includes a switching unit for switching a DC voltage; a transformer which has a primary winding connected to the switching unit, a secondary winding electromagnetically coupled to the primary winding, and an auxiliary winding electromagnetically coupled to the primary winding; a rectifier for rectifying a voltage outputted from the transformer; and a controller for controlling the switching unit to operate according to the PWM scheme in a normal operation mode, and to operate according to a quasi-resonant scheme in a standby mode, by detecting information of a load connected to the rectifier. | 12-02-2010 |
| 20110001359 | LOAD SHARING DEVICE AND PARALLEL POWER SUPPLY THEREWITH - The present invention relates to a load sharing device and a parallel power supply therewith. There is provided a parallel power supply, including: a plurality of power supply modules each connected to a single load in parallel to provide balanced output currents to the single load; a common voltage control signal output unit that generates a common voltage control signal from output voltages of the plurality of power supply modules and outputs the common voltage control signals to the plurality of power supply modules; and output voltage control units that are provided in the respective plurality of power supply modules to detect output currents of the plurality of power supply modules and to control output voltages of the plurality of power supply modules according to the detected signals, controlling the output voltages to be in a predetermined voltage range according to the common voltage control signals. | 01-06-2011 |
| 20120069603 | ADAPTER POWER SUPPLY - An adapter power supply includes an AC/DC converter converting a commercial AC power into a DC power; a DC/DC converter including a transformer composed of a primary terminal and a secondary terminal in order to output an output power by converting a link voltage of the DC power; and a controller presuming a load current of the output power through a primary current of the transformer and varying the link voltage of the DC power according to variation of the estimated load current. | 03-22-2012 |
Hwa-Shin Moon, Daejeon-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20120124228 | MULTIMEDIA SESSION TRANSFER CONTROL SYSTEM AND METHOD - A multimedia session transfer control system and method are provided. The multimedia session transfer control system includes a service transfer control server configured to issue a session transfer message including information on transfer of a session when the session between a receiving terminal and a transmitting terminal is transferred; and a service providing server configured to receive the session transfer message, identify a multimedia service corresponding to the session transfer, change an execution rule for the multimedia service, and provide the multimedia service whose execution rule has been changed from the transmitting terminal to the receiving terminal. | 05-17-2012 |
Jung-Mo Moon, Daejeon-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20100093312 | METHOD OF PROVIDING MULTICAST-BASED PUSH-TO-EVERYTHING SERVICE USING MBMS SERVER - Provided is a multicast-based push-to-everything (PTx) service. The method of providing a PTx service using a multimedia broadcast/multicast service (MBMS) server includes: generating a PTx service session at the request of a user equipment (UE); subscribing UEs, which desire to subscribe to the generated PTx service session, to the generated PTx service session; providing a PTx service to the UEs, which subscribed to the PTX service session, in a multicast manner; and unsubscribing a UE from the PTx service session at the request of the UE. Therefore, a multicast-based PTx service can be provided in a long-term evolution advanced (LTE-Adv) network. | 04-15-2010 |
Sang Man Moon, Daejeon-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20100162787 | QUICK TEST TOOL AND METHOD OF AIRCRAFT AIRSPEED INDICATOR - Provided is a test tool for an airspeed indicator of an aircraft, including: a cylinder portion including an insertion groove with a predetermined amount of space, and of which one end is sealed by a cover and includes an injection portion on the cover so that the insertion groove passes through a pitot tube, and of which another open end includes a protruded step around its inner circumferential surface; a piston portion being inserted into the insertion groove to reciprocally move within the insertion groove, and including a protrusion portion having a size and a shape corresponding to an aperture of the insertion groove, and a bar-shaped knob portion being extended from the protrusion portion; and a display portion being formed of a transparent material on an outer surface of the cylinder portion to display a location of the protrusion portion reciprocally moving within the cylinder portion. | 07-01-2010 |
Sung-Jin Moon, Daejeon-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20120127858 | METHOD AND APPARATUS FOR PROVIDING PER-SUBSCRIBER-AWARE-FLOW QOS - A packet scheduling apparatus and method to fairly share network bandwidth between multiple subscribers and to fairly share the bandwidth allocated to each subscriber between multiple flows are provided. The packet scheduling method includes calculating first bandwidth for each subscriber to fairly share total bandwidth set for the transmission of packets between multiple subscribers; calculating second bandwidth for each flow to fairly share the first bandwidth between one or more flows that belong to each of the multiple subscribers; and scheduling a packet of each of the one or more flows based on the second bandwidth. | 05-24-2012 |
| 20120127859 | PACKET SCHEDULING METHOD AND APPARATUS BASED ON FAIR BANDWIDTH ALLOCATION - A packet scheduling method and apparatus which allows multiple flows that require data transmission to the same output port of a network device such as a router to fairly share bandwidth. The packet scheduling method includes calculating an expected time of arrival of a (k+1)-th packet subsequent to a currently input k-th packet of individual flows by use of bandwidth allocated fairly to each of the flows and a length of the k-th packet; in response to the arrival of the (k+1)-th packet, comparing the expected time of arrival of the (k+1)-th packet to an actual time of arrival of the (k+1)-th packet; and scheduling the (k+1)-th packet of each flow according to the comparison result. | 05-24-2012 |
Sung-Yeon Moon, Daejeon-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20120092368 | APPARATUS AND METHOD FOR PROVIDING AUGMENTED REALITY (AR) INFORMATION - Provided are a server, a terminal, and a method of providing Augmented Reality (AR) using a mobile tag in the terminal which is accessible to the server through a wired/wireless communication network. The method includes writing content in response to a tag creation request to create a tag; setting location information of the tag; setting, if the tag is a mobile tag, the location information of the mobile tag to a variable state and setting movement information of the mobile tag; and transmitting information about the mobile tag including the content, the location information, and the movement setting information of the mobile tag to the server, and requesting the server to register the mobile tag. | 04-19-2012 |