Patent application number | Description | Published |
20150188179 | METHOD FOR MANUFACTURING END PLATE FOR FUEL CELL STACK - A method of manufacturing an end plated for a fuel cell stack, using overmolding injection molding is provided. The method prevents damage to tapped portions in injection molding and re-tapping after the injection molding, by implementing a method of injection molding for an end plate that prevents an injection-molded part from flowing into taps by forming a male thread on a first side of each of fixing pins fitted in a metal insert in injection molding of an end plate and by fastening the fixing pins in advance in the taps of the metal insert. In addition, the method aligns the metal insert at the more accurate position while a mold is assembled, by tapering the second sides of the fixing pins. | 07-02-2015 |
20150188180 | FUEL CELL STACK - A fuel cell stack is provided that includes a fuel cell stack module and an enclosure. The fuel cell stack module includes end plates and coupling bars coupled to the end plates. The enclosure includes an upper enclosure covering a front surface, an upper surface, and a back surface of the fuel cell stack module, a lower enclosure covering the front surface, a lower surface, and the back surface of the fuel stack module, a left enclosure fixed to one of the end plates, and a right enclosure fixed to the other of the end plates. The upper enclosure and the lower enclosure are coupled to protruding portions of the left enclosure and the right enclosure and bent toward the surfaces of the fuel cell stack module so as to be in surface contact with the surfaces of the fuel cell stack module. | 07-02-2015 |
20150194696 | FUEL CELL STACK ENCLOSURE - A fuel cell stack enclosure is provided that includes side covers configured to be joined with each of end of a stack module respectively. A lower cover is also configured to be provided under the stack module and formed to partially cover a lower portion and a first side portion of an outer surface of the side cove. An upper cover may be provided over the stack module, and be formed to partially cover an upper portion and a second side portion of the outer surface of the side cover to enclose the stack module along with the lower cover while joining with the side covers. | 07-09-2015 |
20150303493 | END PLATE FOR FUEL CELL - An end plate for a fuel cell is provided in which a main block is configured to form a body and support a fuel cell at a predetermined pressure and a subplate is configured to include a material having reducibility higher than that of the main block and to adhere to one side of the main block. Additionally, an insulating part encloses the main block and the subplate. | 10-22-2015 |
Patent application number | Description | Published |
20080298492 | Apparatus and Method for Estimating Channel in Communication System Supporting of Dm/Ofdma - Disclosed are an apparatus and a method for estimating a channel in a base station when using an Optional Partial Usage of Sub-Channels (OPUSC) mode in an uplink channel of a communication system supporting Orthogonal Frequency Division Multiplexing/Orthogonal Frequency Division Multiple Access (OFDM/OFDMA). In order to estimate the channel in the OFDM/OFDMA communication system, according to the present invention, pilots and data are extracted from input signals, phase change caused by time delay is estimated using the extracted pilots and data, and a channel estimation value is obtained by reflecting the estimated phase change. | 12-04-2008 |
20080304591 | Apparatus and Method for Estimating Channel in Communication System Supporting Ofdm/Ofdma - Disclosed are an apparatus and a method for estimating a channel in a base station when using a Partial Usage of Sub-Channels (PUSC) mode in an uplink channel of the communication system supporting Orthogonal Frequency Division Multiplexing/Orthogonal Frequency Division Multiple Access (OFDM/OFDMA). For this, the channel estimation apparatus used in the communication system supporting the OFDM/OFDMA comprises a phase estimation/compensation unit estimating and compensating phase change of a channel by using pilots included in signals input by sub-channel; and a channel estimation unit estimating the channel by averaging the pilots of the signals of which the phase is compensated. | 12-11-2008 |
20090003423 | Frequency Offset Estimation Apparatus and Method in Wireless Communication System - The present invention relates to an apparatus and method for estimating a frequency offset in a wireless telecommunication system. The present invention does not estimate an initial frequency offset using a preamble which is the initial symbol of a frame upon estimation of the frequency offset in the wireless telecommunication system, but estimates a frequency offset using correlation of a cyclic prefix (CP) existing in each symbol, thereby eliminating a need to reproduce information about separate preamble signals and preamble signals, and easily estimating a frequency offset using only input signals. | 01-01-2009 |
20090252028 | APPARATUS AND METHOD FOR CONTROLLING RANGING OF MOBILE TERMINALS IN WIRELESS COMMUNICATION SYSTEM - Disclosed are an apparatus and a method for controlling ranging in a wireless communication system. The apparatus according to the present invention comprises a Radio Frequency (RF) module converting RF band signals received via antenna to low-frequency band signal; a Fast Fourier Transform (FFT) module converting the low-frequency band signal of time-domain to frequency-domain signal; a derandomizer performing derandomizing the frequency-domain signals by using a random sequence being transmitted by the terminals; a depermutation module combining the frequency-domain signals output from the derandomizer by unit of burst and outputting the combined signal; and a ranging controller controlling periodic ranging of the terminal corresponding to the respective bursts by estimating phase change in the frequency-domain signals of burst unit. | 10-08-2009 |
20100091642 | APPARATUS OF CELL ACQUISITION IN WIRELESS COMMUNICATION SYSTEM AND THE METHOD THEREOF - An apparatus and a method for performing a cell search are disclosed. The apparatus includes fast Fourier transform (FFT) units converting signals received by the multiple antennas into frequency domain signals, inverse randomizers inverse-randomizing the frequency domain signals, an alignment unit aligning the inverse-randomized frequency domain signals to form an aligned signal, an inverse fast Fourier transform (IFFT) unit converting the aligned signal into a time-domain signal, a maximum value detector detecting a maximum value of the time-domain signal and a determiner determining whether a preamble is obtained based on the maximum value detected by the maximum value detector. Therefore, communication performance and quality may be improved and complexity may be reduced since one IFFT unit is used with respect to the signals received by a plurality of antennas. | 04-15-2010 |
Patent application number | Description | Published |
20130171335 | THIN FILM DEPOSITING APPARATUS AND THE THIN FILM DEPOSITING METHOD USING THE SAME - A thin film depositing apparatus and a thin film deposition method using the apparatus. The thin film depositing apparatus includes a chamber configured to have a substrate mounted therein, an ejection unit configured to move in the chamber and to eject a deposition vapor to the substrate, and a source supply unit configured to supply a source of the deposition vapor to the ejection unit. | 07-04-2013 |
20130251902 | Thin Film Depositing Apparatus and Thin Film Depositing Method Used by the Same - A thin film depositing apparatus and a thin film depositing method used by the thin film depositing apparatus. The thin film depositing apparatus includes a deposition chamber through which a process gas outlet of a deposition source is arranged; a transfer shuttle disposed in the deposition chamber, the transfer shuttle comprising a mounting plate for loading a substrate, the transfer shuttle being reciprocal with respect to the process gas outlet; and at least one bendable auxiliary plate installed at one side of the transfer shuttle, the bendable auxiliary plate closing the process gas outlet when opposite the process gas outlet, the bendable auxiliary plate comprising a folding member for placing the bendable auxiliary plate in each of an unbent state and bent state dependent upon the position of the transfer shuttle. | 09-26-2013 |
20140161966 | MONOMER VAPORIZING DEVICE AND METHOD OF CONTROLLING THE SAME - A monomer vaporizing device and a method of controlling the same are disclosed. The monomer vaporizing device includes: a first vaporizer and a second vaporizer that receive a purge gas and vaporize a first monomer and a second monomer, respectively; a first flow pipe and a second flow pipe that are connected to the respective vaporizers and allow the first monomer and the second monomer, vaporized by the respective vaporizers, to flow therethrough; a transition tube that is connected to the first flow pipe and the second flow pipe and supplies at least one of the first monomer and the second monomer to a deposition chamber; and a control valve apparatus that regulates monomer flow into the deposition chamber. The device facilitates smooth and uninterrupted application of monomer to the interior of a deposition chamber. | 06-12-2014 |
20140162385 | DEPOSITION APPARATUS, METHOD OF FORMING THIN FILM USING THE SAME AND METHOD OF MANUFACTURING ORGANIC LIGHT EMITTING DISPLAY APPARATUS - A deposition apparatus for performing a deposition process by using a mask with respect to a substrate, the deposition apparatus includes a chamber, a support unit in the chamber, the support unit including first holes and being configured to support the substrate, a supply unit configured to supply at least one deposition raw material toward the substrate, and movable alignment units through the first holes of the support unit, the alignment units being configured to support the mask and to align the mask with respect to the substrate. | 06-12-2014 |
20140179041 | APPARATUS AND METHOD FOR MANUFACTURING THIN FILM ENCAPSULATION - An apparatus and method for manufacturing a thin film encapsulation includes: a first cluster configured to form a first inorganic layer on a display substrate using a sputtering process; a second cluster configured to form a first organic layer on the first inorganic layer on the display substrate using a monomer deposition process; and a third cluster configured to form a second inorganic layer on the first organic layer on the display substrate using a chemical vapor deposition (CVD) process or a plasma enhanced chemical vapor deposition (PECVD) process. | 06-26-2014 |
20140302624 | DEPOSITION APPARATUS, METHOD OF FORMING THIN FILM USING THE SAME, AND METHOD OF MANUFACTURING ORGANIC LIGHT EMITTING DISPLAY APPARATUS - A deposition apparatus configured to perform a deposition process on a substrate, the deposition apparatus including a chamber having an exhaust opening in a surface, a deposition source in the chamber configured to eject one or more deposition materials toward the substrate, a cooling plate corresponding to an inner surface of the chamber, at which the exhaust opening is formed, a refrigerator contacting the cooling plate, and a pump coupled to the exhaust opening. | 10-09-2014 |
20150047969 | THIN FILM ENCAPSULATION LAYER MANUFACTURING APPARATUS AND METHOD OF MANUFACTURING DISPLAY APPARATUS USING THE SAME - A thin film encapsulation layer manufacturing apparatus is provided that may include a transfer chamber, a sputtering chamber, a monomer deposition chamber, a chemical vapor deposition (CVD) chamber, and an atomic layer deposition (ALD) chamber. The transfer chamber may be connected to each of the other chambers, and may be configured to align a substrate. Each of the other chambers may be configured to receive from and transfer to the transfer chamber a substrate. The sputtering chamber may be configured to form a first inorganic layer on the substrate by a sputtering process. The monomer deposition chamber may be configured to deposit a first organic layer on the first inorganic layer. The CVD chamber may be configured to form a second inorganic layer on the first organic layer. The ALD chamber may be configured to form a third inorganic layer on the second inorganic layer. | 02-19-2015 |
20150200383 | SPUTTERING DEVICE AND SPUTTERING METHOD - One or more embodiments of the present invention relate to a sputtering device and a sputtering method. By using the sputtering device according to the present embodiment, characteristics of a deposition layer formed at the organic light emitting display apparatus may be improved, thereby improving electric characteristics and image quality of the organic light emitting display apparatus may be improved. | 07-16-2015 |
Patent application number | Description | Published |
20100332830 | SYSTEM AND METHOD FOR MUTUAL AUTHENTICATION BETWEEN NODE AND SINK IN SENSOR NETWORK - Disclosed a system and method for mutual authentication between a node and a sink in a sensor network. At least one sink periodically creates a neighboring sink list including information on at least one adjacent sink, and the sink requests node authentication to a base station when receiving an authentication request from the node and transmits its own neighboring sink list to the node when the node authentication has been completed. When the node moves and requests authentication to another sink, the another sink stores a neighboring sink list received from the node, determines if a node-authenticable sink exists in its own neighboring sink list according to the authentication request, and requests re-authentication of the node to the node-authenticable sink when the node-authenticable sink exists, so that re-authentication between the node and the sink is easily performed. | 12-30-2010 |
20100332831 | METHOD AND APPARATUS FOR AUTHENTICATING A SENSOR NODE IN A SENSOR NETWORK - A method and apparatus for authenticating a sensor node in a sensor network. The method for authenticating a sensor node by a first sink node in a sensor network includes receiving an authentication request using an authentication ticket from the sensor node, identifying a second sink node which has issued the authentication ticket, decoding the authentication ticket using a group key, which is previously stored in correspondence to the second sink node to confirm the validity of the authentication ticket, when the second sink node is included in a neighboring node list, normally processing authentication for the sensor node, generating an authentication ticket using a group key of the first sink node, and transmitting the generated authentication ticket to the sensor node. | 12-30-2010 |
20110039494 | SYSTEM, METHOD AND APPARATUS FOR WIRELESS NETWORK CONNECTION USING NEAR FIELD COMMUNICATION - A system, method, and apparatus are provided for establishing a wireless network connection between a mobile terminal and an electronic apparatus by using a near field communication network. At least one electronic apparatus is connected to the near field communication network. A mobile terminal is connected to the near field communication network, exchanges information with the at least one electronic apparatus for a wireless communication network connection through the connected near field communication network, and establishes the wireless communication network connection with the at least one electronic apparatus based on the exchanged information. | 02-17-2011 |
20110110255 | APPARATUS AND METHOD FOR AVOIDING CHANNEL INTERFERENCE IN A MULTI-CHANNEL SENSOR NETWORK - A method of avoiding channel interference in a multi-channel sensor network, includes periodically measuring an energy of a channel used by at least one node included in the sensor network; determining if the energy of the channel has a value larger than a first preset threshold; when the energy of the channel has a value larger than the first preset threshold, concluding that the channel is influenced by an interference from an interference source, and reporting it to a parent node of the at least one node; and switching the channel influenced by the interference to a new channel, which is not influenced by an interference, thereby avoiding an influence of the interference. | 05-12-2011 |
20110111701 | APPARATUS AND METHOD FOR AVOIDING CHANNEL INTERFERENCE IN A SINGLE CHANNEL SENSOR NETWORK - A method of avoiding a channel interference in a single channel sensor network, includes periodically measuring an energy of a channel used by at least one node included in the sensor network; exchanging the measured energy of the channel with a neighbor node of the at least one node; receiving energy of all nodes of the sensor network and determining if there is an interference, by a coordinator node, which is a highest node of the at least one node; and when it is determined that there is an interference, switching a channel influenced by the interference to a channel which has been scanned by the coordinator node and is not influenced by the interference, thereby avoiding an influence of the interference. | 05-12-2011 |
20110115706 | Apparatus and method for providing pointer controlfunction in portable terminal - An apparatus and a method for controlling a pointer output at a peripheral device using a portable terminal. In particular, an apparatus and method for controlling a pointer on a peripheral device screen using the portable terminal and shifting an object selected using the pointer to another peripheral device, including a pointer management unit to select information on a pointer to be used and transmit the information to a peripheral device, and determine a motion position of the pointer and provide the motion position to the peripheral device. | 05-19-2011 |
20110116631 | METHOD AND APPARATUS FOR FORMING SECURITY CHANNEL IN SHORT RANGE COMMUNICATION - A channel connection of a device that performs short range wireless communication is provided. If a public key that is broadcast by a specified device is received, the device encrypts its own UID (Unique Identifier) using the public key to transmit the encrypted UID to the specified device, transmits a pairing request to the specified device, and safely receives a key seed from the specified device using a security address included in a pairing device and the UID to form a security channel with the specified device. | 05-19-2011 |
20110126015 | SINK AUTHENTICATION SYSTEM AND METHOD USING MOBILE COMMUNICATION NETWORK - A system is provided for authentication between a mobile device (MD) and a sink using a mobile communication network. If a sink authentication request for the sink is received from the MD, a base station (BS) sends a sink authentication response including sink authentication information for the sink, to the MD. The MD forwards the sink authentication request for the sink to the BS, and if a sink authentication response is received from the BS, authenticates the sink using the received sink authentication information. The sink performs authentication with the MD. | 05-26-2011 |
20120044827 | COMMUNICATION METHOD AND APPARATUS IN MOBILE AD-HOC NETWORK - A communication method between nodes that have their own timers and have an equal start time of a frame for Time Division Multiple Access (TDMA) communication based on their timers in a mobile ad-hoc network, in which a node receives a timer value derived by a neighbor node on the basis of a transmission time, from the neighbor node, the node calculates a time offset indicative of a difference between a timer value derived on the basis of a time the node received the timer value, and the received timer value, and stores the time offset in a memory, and upon receiving a time value indicating a time related to inter-node TDMA communication from the neighbor node, the node corrects the received time value as a time value based on its timer using the time offset, and performs TDMA communication using the corrected time value. | 02-23-2012 |
20120083298 | METHOD AND APPARATUS FOR SECURE PAIRING IN WIRELESS COMMUNICATION - Provided is a wireless connection device including a selection information generating unit which generates selection information with respect to each external device of a plurality of external devices that transmitted signals for wireless connection; a selecting unit which compares the selection information regarding each external device of the plurality of external devices and selects an optimal device from among the plurality of external devices based on a result of the comparison; and a connection processing unit which establishes a wireless connection to a first external device, among the plurality of external devices, that first transmitted the signal for wireless connection, and, if the first external device is different from the optimal external device, terminates the wireless connection to the first external device and establishes a wireless connection to the optimal external device. | 04-05-2012 |
20120166580 | METHOD AND APPARATUS FOR COMMUNICATION USING HETEROGENEOUS PROTOCOLS - Heterogeneous protocol stacks are used in an approach including analyzing a destination network ID of data received by a shared, lower layer protocol stack, a data type field value, and/or whether any of the upper layer protocol stacks support broadcasting. An upper layer protocol stack is selected based on the results of the analysis. The received data is transmitted to the selected upper layer protocol stack. Accordingly, heterogeneous protocol stacks may be realized in one chip. | 06-28-2012 |
20120196536 | METHOD AND APPARATUS FOR REMOTELY CONTROLLING CONSUMER ELECTRONICS DEVICE BY USING WIRELESS PERSONAL AREA NETWORK - A method and apparatus for communicating with a target device in a personal area network (PAN), when a multi-function remote controller (MRC) is outside the coverage area of the target device. The apparatus includes a proxy device which automatically forms a virtual PAN by setting up a pairing link with the target device to control the target device. Accordingly, a user may continuously control the target device irrespective of the location of the MRC. | 08-02-2012 |
20140185717 | APPARATUS AND METHOD FOR FRAME SYNC DETECTION - An apparatus includes: first to N−1-th correlation-calculation units correlation-calculating a signal at a position corresponding to an n-th reference cell of a reference symbol in a received symbol and a signal at a position corresponding to an n+1-th reference cell of the reference symbol in the received symbol; a first calculation unit multiplying a result of phase correlation calculation of the n-th reference cell and the n+1-th reference cell by the calculation result of the correlation-calculation units and thereafter, summing up all of the multiplication results to calculate a first sum total; a second calculation unit multiplying a result of phase correlation calculation of an N−n−2-th reference cell and an N−n−1-th reference cell by the calculation result of the correlation-calculation units and summing up all of the multiplying results to calculate a second sum total; and a decider detecting a larger value between the first and the second sum total. | 07-03-2014 |
20150334516 | SYSTEM, METHOD AND APPARATUS FOR WIRELESS NETWORK CONNECTION USING NEAR FIELD COMMUNICATION - A system, method, and apparatus are provided for establishing a wireless network connection between a mobile terminal and an electronic apparatus by using a near field communication network. At least one electronic apparatus is connected to the near field communication network. A mobile terminal is connected to the near field communication network, exchanges information with the at least one electronic apparatus for a wireless communication network connection through the connected near field communication network, and establishes the wireless communication network connection with the at least one electronic apparatus based on the exchanged information. | 11-19-2015 |