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Hyun Woo Lee

Hyun Woo Lee, Kyoungki-Do KR

Patent application numberDescriptionPublished
20090073787METHOD FOR CONTROLLING TIME POINT FOR DATA OUTPUT IN SYNCHRONOUS MEMORY DEVICE - Disclosed is a method for controlling a time point for data output in a synchronous memory device, which varies a time point of an internal read command of the synchronous memory device, which is generated in response to an external read command according to the CAS latency of the synchronous memory device. In other words, the time point to generate the internal read command when CAS latency corresponds to 2N+2 (N=0, 1, 2, . . . ) is delayed by 1tCK as compared with the time point to generate the internal read command when CAS latency corresponds to 2N+1, and the 1tCK is a period of an external clock applied to the synchronous memory device.03-19-2009
20090267665SEMICONDUCTOR MEMORY DEVICE FOR GENERATING A DELAY LOCKED CLOCK IN EARLY STAGE - A semiconductor memory apparatus includes a first delay locked loop configured to delay a system clock by a predetermined time to thereby generate a first delay locked clock synchronizing a data output timing with the system clock, a second delay locked loop configured to delay an inverse signal of the system clock by a predetermined time to thereby generate a second delay locked clock synchronizing the data output timing with the system clock, and a clock selection block configured to select one of the first and second delay locked clocks to thereby output as a reference clock for data output.10-29-2009
20110074479DELAY LOCKED LOOP APPARATUS - A delay locked loop (DLL) apparatus includes a first delay unit converting a reference clock into a rising clock. A second delay unit converts the reference clock into a falling clock, and a replica delay unit replica-delays the rising clock. A first phase detector compares the phases of the reference clock and the delayed rising clock to output a first detection signal corresponding to the compared phases. A controller synchronizes the rising edge of the rising clock with the rising edge of the reference clock according to the first detection signal of the first phase detector. A second phase detector compares the phases of the synchronized rising clock and the synchronization clock to output a second detection signal corresponding to the compared phases. The DLL apparatus compensates for a skew between an external clock and data and between external and internal clocks by employing a single replica delay unit.03-31-2011

Patent applications by Hyun Woo Lee, Kyoungki-Do KR

Hyun Woo Lee, Daejeon KR

Patent application numberDescriptionPublished
20090154368METHOD AND APPARATUS FOR MEASURING QoE GUARANTEED REAL-TIME IP-MEDIA VIDEO QUALITY - A method and apparatus for measuring the quality of a video provided in an IP network based media service is provided. The apparatus for measuring Quality of Experience (QoE) guaranteed real-time Internet Protocol (IP)-media video quality, includes: a receiver receiving a transmission video provided through an IP network service platform and an original video corresponding to the transmission video, and extracting frames of the transmission video and the original video; a detector comparing the frames of the transmission video and the original video in real time to obtain a difference between the frames of the transmission video and the original video and detecting a matching segment between the transmission video and the original video; and a measurement unit calculating a QoE parameter using the frames of the transmission video and the original video which correspond to the matching segment.06-18-2009
20100135487BUNDLE AUTHENTICATION SYSTEM AND METHOD - There is provided a bundle authentication system and method that can perform network access authentication and authentication at a service request in a next generation network utilizing a Bundled Authentication Key (BAK) generated by using an Extended Master Session Key (EMSK) that is an encryption key generated during access authentication.06-03-2010
20100158406METHOD FOR RESTORING TRANSPORT ERROR INCLUDED IN IMAGE AND APPARATUS THEREOF - In an image transmission error restoring method and an apparatus using the same, a received image frame is divided into a plurality of blocks and each block is divided through a multi-resolution process. After the multi-resolution process, an error-occurred region is searched and the searched error-occurred region is recovered based on information selected from among global pixel information and local pixel information according to complexity of each block.06-24-2010
20110047030METHOD AND APPARATUS FOR PROVIDING/RECEIVING MOBILE DIGITAL ADVERTISEMENT SERVICE - The present invention relates to a method and apparatus for receiving/providing mobile digital advertisement service. The mobile digital advertisement service receiving method includes receiving a connection guide message from an access point installed at a first store, establishing connection to the access point by transmitting a connection acceptance message in response to the received connection guide message, and receiving the advertisement contents from an advertisement managing server connected to the access point after establishing connection to the access point. The connection guide message is a message for inquiring whether to receive the advertisement contents or not.02-24-2011
20110055176MEDIA MEDIATOR SYSTEM AND METHOD FOR MANAGING CONTENTS OF VARIOUS FORMATS - Provided is a system and method that may encode various formats of contents to a single format and thereby manage the contents, and may transform the contents to a format corresponding to a request of a third party or an end user to distribute the content. A media mediator system of managing various formats of contents may include: a service manager to receive a content and metadata of the content from a content provider; a metadata manager to register the content using the metadata, and to store the metadata of the registered content; a database manager to store and manage information associated with the content; and an encoding manager to schedule an encoding sequence of the content, and to sequentially encode the content based on a scheduling result.03-03-2011
20110055352SYSTEM AND METHOD FOR BROKERING CONTENT AND METADATA OF CONTENT ON NETWORK - Provided is a method and system of automatically uploading a content and encoding the uploaded content using various formats to provide the encoded content to a third party or an end user. A system for brokering a content and metadata of the content over a network may include: a syndication portal to register a content provider, and to transmit address information for a feed to the content provider; an aggregator to verify whether an added content exists in the feed of the content provider, and to upload the content and the metadata of the content when the added content exists; and a media mediator to register the uploaded content, to encode the content, and to provide the encoded content to an end user.03-03-2011
20110141289METHOD AND SYSTEM FOR ASSESSING QUALITY OF MULTI-LEVEL VIDEO - Provided is a method of assessing an image quality of each of a base layer and an enhanced layer using a different scheme to assess a quality of a multi-level video based on assessment results. A multi-level video quality assessing system includes: a bitstream extractor to separate a multi-level video into a base layer bitstream and an enhanced layer bitstream; a base layer quality assessment module to generate quality assessment result information of a base layer image by assessing an image quality of base layer bitstream; an enhanced layer quality assessment module to generate quality assessment result information of an enhanced layer image by assessing an image quality of enhanced layer bitstream; and a final video quality assessment module to assess a quality of experience (QoE) of multi-level video based on quality assessment result information of each of the base layer image and the enhanced layer image.06-16-2011
20110149775SYSTEM AND METHOD FOR INTERWORKING BETWEEN MEDIA QUALITY ASSESSMENT AT TERMINAL DEVICE AND QOS CONTROL IN TRANSPORT NETWORK - Provided is a service quality of experience (QoE) predicting and managing system. The service QoE predicting and managing system may include a media quality measurement system (MQMS) to measure a QoE of media, and a quality of service (QoS)/QoE control system (QCS) to measure QoS parameter information, to predict the QoE based on the measured QoS information, to calculate a QoS parameter adjustment value by comparing and analyzing the QoE measured by the MQMS and the predicted QoE, and to transmit the calculated QoS parameter adjustment value to a service quality control system (SCS).06-23-2011
20110153053APPARATUS FOR CONTROLLING GROWTH RATE OF PLANT IN GREENHOUSE AND CONTROLLING METHOD THEREOF - Provided is a plant growth control of an apparatus for controlling a growth rate of a plant growing in a greenhouse having a roof formed of a dye-sensitized panel. In the method, a wavelength of sunlight to pass through the dye-sensitized panel is selected according to external environment information. A wavelength control signal corresponding to the selected wavelength is proved to the dye-sensitized panel.06-23-2011
20110153812APPARATUS AND METHOD FOR DISTRIBUTING CLOUD COMPUTING RESOURCES USING MOBILE DEVICES - An apparatus for distributing mobile resources in a cloud computing environment includes: a resource register configured to analyze, when a request for mobile resource registration is inputted by a user, the requested resource and confirm if the resource is registerable; a provisioning manager configured to create a MVO, when the mobile resource is a registerable resource, and register the mobile resource; a metadata repository configured to store metadata information regarding the registered mobile resource; and a resource manager configured to control the provisioning manager, when the resource register receives a request for the resource registration, so as to create a MVO, register the resource, and store metadata regarding the registered mobile resource information.06-23-2011
20110154172APPARATUS AND METHOD FOR ASSESSING IMAGE QUALITY IN REAL-TIME - An apparatus and method for assessing image quality in real-time in consideration of both a coding error generated in an image processing process and a packet error generated in an image transmission process are provided. The apparatus for assessing image quality in real-time includes: an image quality measurement unit measuring image degradation generated in processing an image; a packet degradation detection unit detecting a packet error generated in transmitting the image; and final outcome drawing unit finally assessing the quality of the image in consideration of both a degradation degree of the image measured by the image quality measurement unit and the packet error measured by the packet degradation detection unit.06-23-2011
20110154396METHOD AND SYSTEM FOR CONTROLLING IPTV SERVICE USING MOBILE TERMINAL - Provided is a method for providing an Internet Protocol television (IPTV) service using a mobile terminal. A mobile terminal of an IPTV service control system may include a viewpoint recognition unit to obtain information about a viewpoint where a user is viewing, a viewpoint processing unit to compute position coordinates corresponding to the viewpoint by comparing a screen displayed on the mobile terminal with the information about the viewpoint, and a set-top control client to display the same screen as a screen of a TV on the to mobile terminal, and to enable the set-top box to display a selection icon on the same position as a position indicated by the position coordinates of the TV.06-23-2011
20110154409METHOD AND SYSTEM TO PROVIDE VIDEO ON DEMAND (VoD) SERVICE USING CONTENTS HAVING MULTIPLE BITRATES - Provided is a method and system of providing a Video on Demand (VoD) service using contents of multiple bitrates that may provide a content encoded at a different bitrate according to a bandwidth of each access network and thereby prevent quality degradation occurring due to a limit of a bandwidth.06-23-2011
20120033600METHOD AND APPARATUS FOR PROVIDING MULTICAST SERVICE FOR MOBILE NODE IN MOBILE COMMUNICATION SYSTEM - A method for providing a multicast service for an MN includes: transmitting, by an MN connected to a first access point within a first access network, multicast information of the MN to an agent of the first access network through the first access point, wherein the multicast information includes information on a multicast source and a multicast group; transmitting and receiving messages between agents according to a predetermined protocol based on the multicast information of the MN transmitted to the agent of the first access network, and setting a multicast path between the multicast source and the MN of the first access network between the agents; transmitting, by the agent of the first access network, the multicast information of the MN to the MICS; and registering, by the MICS, the multicast information of the MN transmitted from the agent of the first network.02-09-2012

Patent applications by Hyun Woo Lee, Daejeon KR

Hyun Woo Lee, Sepul KR

Patent application numberDescriptionPublished
20110044215COMMUNICATION METHOD FOR RADIO COMMUNICATION SYSTEM - A communication method of a user equipment using a time division duplex (TDD) frame in a wireless communication system is provided. The communication method include configuring a TDD frame comprising at least one downlink subframe and at least one uplink subframe, and transmitting a signal by using the TDD frame, wherein an uplink of the TDD frame starts on the basis of a guard period (GP) or an uplink pilot time slot (UpPTS) of a heterogeneous TDD frame.02-24-2011

Hyun Woo Lee, Ichon-Si KR

Patent application numberDescriptionPublished
20100117695SEMICONDUCTOR MEMORY APPARATUS - A semiconductor memory apparatus having a clock signal generation circuit and a data output circuit is presented. The apparatus includes a delay locked loop (DLL), a phase locked loop (PLL), a frequency discrimination unit, and a data output buffer. The DLL circuit is configured to negatively delay a clock signal to generate a DLL clock signal. The PLL circuit is configured to receive the DLL clock signal to generate a control voltage in response to a frequency of the DLL clock signal and to generate a PLL clock signal of a frequency corresponding to a level of the control voltage. The frequency discrimination unit is configured to discriminate a frequency of the DLL clock signal in accordance with the level of the control voltage to generate a frequency discrimination signal. The data output buffer is configured to receive the DLL clock signal or the PLL clock signal to buffer output data signals.05-13-2010
20100289542SEMICONDUCTOR INTEGRATED CIRCUIT - A semiconductor integrated circuit includes a frequency determining unit configured to determine an operational speed of the semiconductor integrated circuit and to generate a frequency region signal; a duty cycle control unit configured to detect a duty cycle of a DLL clock and to generate a duty cycle control signal; a duty cycle correcting unit configured to generate a corrected clock by correcting a duty cycle of an input clock in response to the frequency region signal and in response to the duty cycle control signal; and a DLL (Delay Locked Loop) circuit configured to generate the DLL clock by controlling a phase of the corrected clock.11-18-2010
20110025384DEVICE FOR GENERATING CLOCK IN SEMICONDUCTOR INTEGRATED CIRCUIT - Various embodiments of a semiconductor integrated circuit. According to one exemplary embodiment, a semiconductor integrated circuit includes a multi-phase clock generator that is configured to generate a multi-phase internal clock; a first edge combining unit that is configured to generate a first output clock having a first frequency by combining rising edges of clocks included in the internal clock, and transmit the first output clock to a first port; and a second edge combining unit that is configured to generate a second output clock having a second frequency by combining rising edges of clocks included in the internal clock, and transmit the output clock to a second port.02-03-2011

Hyun Woo Lee, Incheon KR

Patent application numberDescriptionPublished
20100043304DIAMOND TOOL AND METHOD OF MANUFACTURING THE SAME - Disclosed herein is a diamond tool and a method of manufacturing the same. The diamond tool includes a shank and a segment coupled to the shank having a compact having a plurality of grooves, and diamond particles inserted into the grooves and bonded to the compact. The grooves can be formed on the compact corresponding to a desired arrangement locations of the diamond particles. A metal powder injection molding method can be employed to prepare the compacts. More than one compact can be stacked to form the segment, so that the diamond particles can be arranged in various patterns in the segment, thereby achieving simplification of the process, which allows cost savings and process automation.02-25-2010
20100048112DIAMOND TOOL AND METHOD OF MANUFACTURING THE SAME - Disclosed herein is a diamond tool for cutting a workpiece and a method of manufacturing the same. The diamond tool includes a shank and a segment coupled to the shank. The segment includes a tape having a plurality of inserting sections formed on a surface of the tape, and diamond particles inserted into the inserting sections and bonded to the tape by pressure sintering. The inserting sections are formed in the tape corresponding to desired arrangement locations of the diamond particles. The diamond particles can be arranged in various patterns in the segment, thereby achieving simplification of the process, which allows process automation and reduces manufacturing costs.02-25-2010
20100291845DIAMOND TOOL - The present invention relates to a diamond tool for cutting a work-piece. An object of the present invention is to provide a diamond tool, wherein diamond granules are arranged at outer peripheries of segments and on certain circumferences and placed in a radial pattern from a center of a shank of the diamond tool, so that a constant cutting force is maintained even though the segments are worn out, and thus, the same cutting force is maintained during the service life of the diamond tool. A diamond tool according to the present invention for achieving the object comprises a shank in the form of a wheel or disk; segments attached to an outer peripheral surface of the shank; and a plurality of diamond granules that are attached to the segments and arranged at an outer periphery of each of the segments and on a plurality of circumferences spaced apart by a certain distance from one another and are placed in a radial pattern from the center of the shank.11-18-2010
20100294256DIAMOND TOOL AND METHOD FOR MANUFACTURING SEGMENT THEREOF - The present invention relates to a diamond tool for cutting a workpiece. An object of the present invention is to provide a diamond tool, wherein a wear-resistant region is formed in a connection portion between a segment and a shank of the diamond tool to prevent an under-cut phenomenon, to extend the service life of the diamond tool and to improve cutting quality due to easy discharge of cut chips. A diamond tool of the present invention for achieving the object has a cutting segment that contains a plurality of diamond granules and is attached to an outer peripheral surface of a shank, wherein the segment comprises an auxiliary cutting portion that has a thickness identical with that of the shank and a height and is attached to the shank; and a primary cutting portion that is integrally formed on the top of the auxiliary cutting portion and has a thickness larger than that of the auxiliary cutting portion.11-25-2010
20100307473DIAMOND TOOL - The present invention relates to a diamond tool for cutting a workpiece. An object of the present invention is to provide a diamond tool, wherein diamond granules are arranged at regular intervals with respect to an outer peripheral surface of a segment so that the diamond granules are uniformly arranged in a front face of the segment, which is a substantial cutting surface, thereby improving the cutting performance thereof and simultaneously maintaining a consistent performance during the service life of the diamond tool. A diamond tool of the present invention for achieving the object has a segment that is attached to an outer peripheral surface of a shank in the form of a wheel or plate and contains diamond granules, wherein the segment comprises a plurality of diamond granules arranged on a plurality of concentric circles having the same central axis as an outer periphery of the segment.12-09-2010

Hyun Woo Lee, Anyang-Si Gyeongki-Do KR

Patent application numberDescriptionPublished
20100296429Method for Obtaining Synchronization Signal In Wireless Communication System - A method for obtaining a synchronization signal in a wireless communication system includes dividing a full frequency band into a synchronization band for transmission of the synchronization signal and a usual band for transmission of multicast broadcast multimedia service (MBMS) data, and searching for a primary synchronization signal (PSS) for a dedicated MBMS in the synchronization band, and detecting the PSS for the dedicated MBMS through the synchronization band.11-25-2010

Hyun Woo Lee, Gumi-Si KR

Patent application numberDescriptionPublished
20100027485METHOD FOR TRANSMITTING CONTROL SIGNAL AND METHOD FOR ALLOCATING COMMUNICATION RESOURCE TO DO THE SAME - A method for transmitting a control signal together with RACH transmission and a method for allocation a communication resource for the control signal transmission are disclosed. In allocating a communication resource for a control signal transmission within a transmission unit resource region for performing an RACH transmission, the present invention includes the steps of setting a resource region used for the RACH transmission to a portion of the transmission unit resource region and allocating the control signal transmission resource region unused for the RACH transmission within the transmission unit resource region.02-04-2010
20100034155RANDOM ACCESS METHOD AND SIGNALLING METHOD FOR THE SAME - A method for generating an iterative sequence and a signal transmission method using the same are disclosed. As the cell size or the distance between a user equipment (UE) and a Node-B increases, the CP is repeated at least one time while the iterative sequence is generated, the CP length and the ZCZ length are adjusted, so that the sequence timing point can be easily detected, orthogonality between sequences is maintained, and the sequences can be clearly distinguished from each other.02-11-2010
20100091907 METHOD FOR TRANSMITTING INFORMATION USING SEQUENCE - A method for transmitting information using a sequence is disclosed. According to an embodiment, the method includes the steps of generating a sequence for transmitting data or control signals, performing phase modulation for indicating additional information on partial elements among a plurality of elements configuring the sequence, and transmitting the phase modulated sequence. 04-15-2010
20110143744RANDOM ACCESS METHOD AND SIGNALING METHOD FOR THE SAME - A method for generating an iterative sequence and a signal transmission method using the same are disclosed. As the cell size or the distance between a user equipment (UE) and a Node-B increases, the CP is repeated at least one time while the iterative sequence is generated, the CP length and the ZCZ length are adjusted, so that the sequence timing point can be easily detected, orthogonality between sequences is maintained, and the sequences can be clearly distinguished from each other.06-16-2011

Hyun Woo Lee, Daegu KR

Patent application numberDescriptionPublished
20100086002Heating Furnace System for Hot Stamping - Disclosed is a heating furnace system for hot stamping. A first heating furnace has a plurality of pairs of upper and lower rolls arranged in a lengthwise direction thereof in order to transfer a steel plate, and high-frequency coils alternately arranged with the pairs of upper and lower rolls in the lengthwise direction thereof. A second heating furnace continuously transfers the steel plate from the first heating furnace during heating the steel plate at temperature of A04-08-2010

Hyun Woo Lee, Anyang-Si KE

Patent application numberDescriptionPublished
20100022264APPARATUS AND METHOD FOR DYNAMICALLY ALLOCATING RADIO RESOURCE - The invention relates to a communication device and method that dynamically uses frequency resources, and more particularly, to a mobile terminal and a communication method that can dynamically allocate frequencies. The mobile terminal, which can dynamically allocate frequencies includes a communication module including a cognitive engine and a communication system block. The cognitive engine searches frequency bands based on both specific frequency policy and a service chosen by the user and selects a specific frequency band from the searched frequency bands. The communication system block includes a platform block for performing configuration for the selected frequency band and at least one component block for performing data processing based on a specific protocol according tox the configuration of the platform block.01-28-2010

Hyun Woo Lee, Icheon-Si KR

Patent application numberDescriptionPublished
20110241733MULTI-CHIP PACKAGE INCLUDING OUTPUT ENABLE SIGNAL GENERATION CIRCUIT AND DATA OUTPUT CONTROL METHOD THEREOF - An output enable signal generation circuit includes a latency decoder, a latch unit, a latency multiplexer, and an enable setting unit. The latency decoder is configured to decode a mode register set code and generate first and second CAS latency information. The latch unit is configured to output the latched first and second latency information as first and second latency signals. The latency multiplexer is configured to output the first or second latency signal as an output CAS latency signal in response to a chip select signal. The enable setting unit is configured to set an enable timing of an output enable signal.10-06-2011
20120044002SEMICONDUCTOR APPARATUS AND DLL CIRCUIT USING THE SAME - A semiconductor apparatus includes: an update pulse generating unit configured to generate an update pulse every first period based on a frequency of a clock, and a control unit configured to control an output signal in response to an input signal and the update pulse, so that the output signal is varied based on the input signal.02-23-2012

Hyun Woo Lee, Gyeongsan-Si KR

Patent application numberDescriptionPublished
20120059905METHOD AND APPARATUS FOR CONTROLLING DATA USAGE OF MOBILE TERMINAL - A method and an apparatus for controlling data usage of a mobile terminal. The method includes checking a plurality of web contents contained in a web page in a web browser executing mode. The method also includes selectively downloading at least one of the checked web contents when data usage for a preset period exceeds a data usage limit. The method further includes displaying the at least one downloaded web content. The apparatus performs the method. Without periodic control of data usage by a user, the data usage of a mobile terminal is automatically controlled.03-08-2012

Hyun Woo Lee, Ichon-Shi KR

Patent application numberDescriptionPublished
20120081160DELAY LOCKED LOOP CIRCUIT OF SEMICONDUCTOR MEMORY APPARATUS - Various embodiments of a delay locked loop circuit of a semiconductor memory apparatus are disclosed. In one exemplary embodiment, the delay locked loop circuit may include an input correction unit configured to correct a duty ratio of an input clock based on a duty control signal and generate a reference clock; a delay line configured to delay the reference clock by a delay time and generate a delay locked clock; an output correction unit configured to correct a duty ratio of the delay locked clock based on the duty control signal and generate a corrected clock; and a control signal generation unit configured to generate the duty control signal when a correction activation signal is enabled.04-05-2012