Patent application number | Description | Published |
20090041250 | Authentication method in communication system - An authentication method is provided in which a first portable device generates and transmits a first random number and a first timestamp to a first USIM in the first portable device; the first USIM calculates a first sign for the first portable device; the first portable device requests authentication for authenticated communication from a second portable device through transmission of the first random number, the first timestamp, and the first sign to the second portable device; the second portable device generates a second random number and a second timestamp and transmits the information to a second USIM in the second portable device; the second USIM generates a second sign for the second portable device and a second personal key which the second portable device transmits to the first portable device; the first portable device then transmits the information to the first USIM which generates a first personal key for authenticated communication. | 02-12-2009 |
20090132885 | SYSTEM AND METHOD FOR RETRANSMITTING DATA IN A COMMUNICATION SYSTEM - A system and method for retransmitting an encoding block in a communication system is provided. The method includes determining the number of encoding blocks to be retransmitted, determining whether a number of encoding blocks to be retransmitted is a multiple of the number of streams available for retransmitting the encoding blocks, when the number of encoding blocks to be retransmitted is not a multiple of the number of streams, determining the minimum number of encoding blocks, additionally needed to meet a condition that the number of encoding blocks to be retransmitted is a multiple of the number of streams, and allocating wireless resources of the streams to the encoding blocks to be retransmitted, retransmitting the encoding blocks to a receiver, and at the same time, allocating wireless resources, which are not allocated to the encoding blocks to be retransmitted, among the wireless resources of the streams, to encoding blocks corresponding to the additionally needed number, and repeatedly retransmitting the encoding blocks to the receiver. | 05-21-2009 |
20090270590 | Surface Modified Inorganic Material and Producing Method Thereof - A surface-modified inorganic material and a preparation method thereof. A surface-modified inorganic material is provided which is obtained by allowing an organosilane compound having allyl or an allyl derivative to react with an inorganic material, particularly solid silica or ITO glass, in the presence of an acid and an organic solvent, to introduce an organic group into the inorganic material even at room temperature, as well as a preparation method thereof. The invention can effectively introduce the organic group into the inorganic material even at room temperature, and thus is very effective in introducing compounds having a thermally sensitive functional group, for example, natural compounds or proteins. It is possible to introduce various organic groups into an inorganic material and to separate and purify organic molecule-bonded organosilane compounds using a silica gel column to effectively bond them to inorganic materials. Accordingly, the invention is very useful in the chemical industry. | 10-29-2009 |
20110044285 | Apparatus and method for handover optimization in broadband wireless communication system - A method and apparatus optimize handover optimization in a broadband wireless communication system. Operations of a base station includes determining whether at least one of a plurality of time intervals included in a total time taken by handover, exceeds a threshold time. Whether to advance or delay a handover point is determined based on which at least one of the time interval exceeds the threshold time. And at least one handover parameter is changed to advance or delay the handover point. | 02-24-2011 |
20110176525 | METHOD AND APPARATUS FOR DETECTING WHETHER CELL COVERAGE IS DOWNSCALED IN WIRELESS COMMUNICATION SYSTEM - A wireless communication system includes an apparatus capable of detecting whether a cell coverage is downscaled. The wireless communication system receives information used for communication between an evolved NodeB (eNodeB) and a User Equipment (UE) from the eNodeB. The UE performs at least one of pilot signal power checking for checking if a pilot signal power falls within a first reference range, DownLink (DL) Signal-to-Interference plus Noise Ratio (SINR) checking for checking if an SINR of a DL traffic channel falls within a second reference range, and UpLink (UL) SINR checking for checking if an SINR of an UL traffic channel falls within a third reference range using the received information. The UE also detects whether a cell coverage of a cell to which the eNodeB and the UE belongs is downscaled based on a checking result. | 07-21-2011 |
20110188542 | COMMUNICATION APPARATUS AND METHOD - A communication apparatus and method for operating a communication apparatus are provided. The communication apparatus is configured to determine whether a sub-frequency band causing interference is present among sub-frequency bands included in a reception frequency band group, and to send to another communication apparatus an interference avoidance request signal which requests the other communication apparatus to transmit signals by use of remaining sub-frequency bands except the sub-frequency band causing interference, leading to simpler and more efficient interference avoidance. | 08-04-2011 |
20120093105 | METHOD AND APPARATUS FOR SUBBAND SCHEDULING IN WIRELESS COMMUNICATION SYSTEM - A method of scheduling a subband is provided. The method includes determining whether the eNodeB is in an overload state according to a used amount of a first radio resource of the eNodeB, receiving information on a used amount of a second radio source of at least one neighbor eNodeB from the at least one neighbor eNodeB, determining whether the at least one neighbor eNodeB is in the overload state, setting a number of total subbands to be used for a subband scheduling to a number lower than a number of total subbands used by the at least one neighbor eNodeB, setting a subband scheduling start order such that the subband scheduling is started from a subband having a farthest distance in frequency from at least one subband used by the at least one neighbor eNodeB from among the set number of subbands, and performing the subband scheduling. | 04-19-2012 |
20120270593 | METHOD AND APPARATUS FOR POWER CONTROL AND LOAD BALANCING BASED ON LOAD ESTIMATION OF NEIGHBOR CELL IN WIRELESS COMMUNICATION SYSTEM - A Base Station (BS) operation method for reducing load terminals based on load estimation of a neighbor cell in a wireless communication system includes receiving information for estimating a load of a neighbor BS, determining whether to determine the power control and handover terminal set using the number of terminals serviced by the neighbor BS, the number of overload terminals among the terminals serviced by the neighbor BS, and the backoff counter value, and, when it is determined to determine a power control and handover terminal set, deciding the power control and handover terminal set to minimize load terminals, based on the first power variation and the second power variation. | 10-25-2012 |
20130060014 | SURFACE MODIFIED INORGANIC MATERIAL AND PRODUCING METHOD THEREOF - A surface-modified inorganic material and a preparation method thereof. A surface-modified inorganic material is provided which is obtained by allowing an organosilane compound having allyl or an allyl derivative to react with an inorganic material, particularly solid silica or ITO glass, in the presence of an acid and an organic solvent, to introduce an organic group into the inorganic material even at room temperature, as well as a preparation method thereof. The invention can effectively introduce the organic group into the inorganic material even at room temperature, and thus is very effective in introducing compounds having a thermally sensitive functional group, for example, natural compounds or proteins. It is possible to introduce various organic groups into an inorganic material and to separate and purify organic molecule-bonded organosilane compounds using a silica gel column to effectively bond them to inorganic materials. | 03-07-2013 |
20130090972 | SYSTEM FOR ASSESSING AN ENVIRONMENTAL LOAD OF BUILDING DURING LIFE CYCLE - The present invention relates to an environmental load assessment system, which is capable of efficiently and simply assessing an environmental load of a building in all stages (e.g., a planning stage, a design stage, a construction stage, and a use stage after construction) in doing executing a business by subdividing an assessment process, such as simple assessment in the design stage, detailed assessment in the start stage, and site assessment in the construction stage according to the progress of a construction project. The system of the present invention includes a DB server for storing material information, environmental load information, and itemized material information about a construction work and storing environmental load information about an energy source; a management server for assessing environmental loads based on simple assessment, a detailed assessment, and site assessment according to the progress of a target assessment construction project; and a UI server for providing user terminals with an execution environment so that the management server can be operated. | 04-11-2013 |
20140044152 | COMMUNICATION APPARATUS AND METHOD - A communication apparatus and method for operating a communication apparatus are provided. The communication apparatus is configured to determine whether a sub-frequency band causing interference is present among sub-frequency bands included in a reception frequency band group, and to send to another communication apparatus an interference avoidance request signal which requests the other communication apparatus to transmit signals by use of remaining sub-frequency bands except the sub-frequency band causing interference, leading to simpler and more efficient interference avoidance. | 02-13-2014 |
Patent application number | Description | Published |
20090014500 | Weight Balancer and Pipe Joining Method - The present invention relates to a weight balancer ( | 01-15-2009 |
20090273512 | GLOBAL COORDINATE CREATION METHOD FOR PRECISION MEASUREMENT OF HOLLOW FRAME - A method of creating a global coordinate of a polyhedral hollow frame includes a first step of providing a plurality of transmitters on a reference surface in the hollow frame, providing a plurality of reference sensors to create the coordinate of the reference surface, and creating a local coordinate frame of the reference surface on the basis of the positional coordinates measured by the reference sensors; a second step of providing reference sensors at common points of a first vertical surface neighboring to the reference surface to measure and store the coordinates of the common points; a third step of providing a plurality of transmitters and reference sensors on the first vertical surface neighboring to the reference surface to create a local coordinate frame of the first vertical surface; a fourth step of transforming the local coordinate frames created at the first and the third steps into a global coordinate frame using the coordinates of the common points measured at the second step; a fifth step of repeatedly performing the second step to the fourth step on remaining vertical surfaces of the polyhedral hollow frame to transform the respective local coordinate frames into a unified global coordinate frame; a sixth step of providing transmitters on an upper surface neighboring to each vertical surface to obtain the relationship between the global coordinate frame and a local coordinate frame of the upper surface using the coordinates of the common point; and a seventh step of creating and applying a global coordinate frame using the relationship obtained at the sixth step. | 11-05-2009 |
20100020305 | THREE-DIMENSIONAL MEASUREMENT SYSTEM AND RESCALING METHOD USING INDOOR GPS - A three-dimensional measurement system using an IGPS includes a rescale bar having linear scales thereon, a linear encoder for measuring an absolute length within which the linear encoder moves on the rescale bar, a plurality of optical transmitters that radiates pan beams, and a vector bar having one end attached to the linear encoder, and having a receiver to detect the pan beams radiated from the optical transmitters, the vector bar acquiring coordinates of two points where the vector bar moves by using the receiver, and measuring a relative length from the coordinates. A ratio between the absolute length and the relative length is applied in rescaling an actual distance between two positions to be measured. | 01-28-2010 |
20100030378 | MULTI-FUNCTION ROBOT FOR MOVING ON WALL USING INDOOR GLOBAL POSITIONING SYSTEM - A wall climbing robot using an Indoor Global Positioning System (IGPS) provided in a room is disclosed. The wall climbing robot includes a navigation receiver configured to receive rotating fan beams emitted from one or more navigation transmitters of the indoor global positioning system, and recognize the rotating fan beams as IGPS signals; a robot frame provided with the navigation receiver mounted; a mobile controller configured to be installed on the robot frame, and to recognize and determine its own position using the IGPS signals; and a drive mechanism configured to travel along the surfaces of the room under control of the mobile controller. The mobile controller includes a central processing unit, an input/output unit, a motion control unit, a drive control unit, a navigation control unit, a sensor signal processor, an emergency processing unit, and an alarm generator. | 02-04-2010 |
20100082155 | APPARATUS FOR MONITORING BUILDING STATUS OF CAVITY FRAME - Disclosed is an apparatus for monitoring a building status achieved during building a cavity frame such as an internal freight warehouse of a cargo. The apparatus for monitoring a building status of a cavity frame includes a portable computer, a central host computer, and an indoor global positioning system. The portable computer remotely accesses the central host computer and downloads information on a work schedule, and the central host computer receives information on problems during works from the portable computer. The indoor global positioning system remotely accesses the central host computer to transmit positional information of a working robot in the cavity frame. The central host computer then transmits, to the working robot, an instruction to perform a corresponding work at a position of the working robot. | 04-01-2010 |
20120043162 | TENDON CONTROLLED MOBILE PLATFORM - The present invention discloses a tendon controlled mobile platform configured to move within a work space defined by a structure. The tendon controlled mobile platform of the present invention, which includes: a mobile platform including a main frame, a plurality of upper winches coupled to an upper part of the main frame, and a plurality of lower winches coupled to a lower part of the main framed, the mobile platform being placed with the work space; a plurality of first wires having respective one ends coupled to lower sides of the structure and respective the other ends coupled to the upper winches, the lengths of the first wires being adjustable; and a plurality of second wires having respective one ends coupled to upper sides of the structure and respective the other ends coupled to the lower winches, the lengths of the second wires being adjustable, can expand the movement range of the mobile platform, thereby expanding the work area, and can easily move the work equipment to an adjacent work area. | 02-23-2012 |
20120118208 | WINCH AND AUTONOMOUS MOBILE APPARATUS INCLUDING THE SAME - The present invention discloses a winch and an autonomous mobile apparatus including the winch. The winch can include: a driving motor; a driving axle configured to rotate by having a driving force transferred from the driving motor; a wire drum installed on the driving axle in such a way that the wire drum is rotated by the driving axle and can move along the driving axle, a first screw part formed on an external circumferential surface of lengthwise end thereof; and a guide part arranged to be parallel to the driving axle and having a second screw part formed on a lateral side that faces the driving axle, the second screw part being extended in a lengthwise direction of the driving axle and engaged with the first screw part. The wire drum can move along the guide part in such a way that the length of a wire being wound or unwound for one rotation of the wire drum is constant. | 05-17-2012 |
20130297043 | CONTROL SYSTEM THAT IS RECONFIGURABLE DURING OPERATION, AND METHOD THEREFOR - Disclosed is a control system that is reconfigurable during operation, and a method therefor. The control system according to one embodiment of the present invention comprises a master controller which generates a bit stream, including reconfiguration information, according to the command of a user. The first slave controller comprises: a first dynamic reconfiguration module, which is a field programmable gate array (FPGA) reconfigured according to the reconfiguration information, and which calculates a control value; a static reconfiguration module which is an FPGA controlling the operation of a target apparatus according to the control value; and a control unit reconfiguring one or more of the first dynamic reconfiguration module and the static reconfiguration module according to the reconfiguration information. | 11-07-2013 |
Patent application number | Description | Published |
20140124028 | SOLAR CELL SUBSTRATE, METHOD FOR MANUFACTURING SAME, AND SOLAR CELL USING SAME - One aspect of the present invention is a solar cell substrate, comprising: a lower substrate; and a lower electrode that is formed on the upper part of said lower substrate, wherein a metal diffusion-preventing film having at least one or two or more metal layers is included between said lower substrate and said lower electrode, and if two or more metal layers are formed, the metal layers adjoining each other can be different metals. Additionally, a solar cell, which is another aspect of the present invention, comprises: a lower substrate; and a lower electrode that is formed on the upper part of said lower substrate, wherein a metal diffusion-preventing film having at least one or two or more metal layers is included between said lower substrate and said lower electrode, and if two or more metal layers are formed, the metal layers adjoining each other comprise solar cell substrates which are of different metals; p-type light absorption layers formed on said solar cell substrates; n-type buffer layers formed on said light absorption layers; transparent windows formed on said buffer layers; and upper electrodes formed on said transparent windows. | 05-08-2014 |
20140130859 | SOLAR CELL SUBSTRATE AND SOLAR CELL USING SAME - The present invention relates to a solar cell substrate, and to a solar cell using same. The solar cell according to one embodiment of the present invention comprises: a lower substrate; and a lower electrode formed on the lower substrate. The lower electrode is formed of a Mo—X—Na three-component-system compound metal layer. Here, X may be one of Nb, Ni, Si, Ti, W, and Cr. The solar cell according to another embodiment of the present invention may comprise: a solar cell substrate including a lower substrate and a Mo—X—Na three-component-system compound metal layer that is a lower electrode formed on the lower substrate; a light-absorption layer formed on the solar cell substrate; a buffer layer formed on the light-absorption layer; a transparent window formed on the buffer layer; and an upper electrode formed on the transparent window. | 05-15-2014 |