Patent application number | Description | Published |
20150160540 | METHOD OF CORRECTING DISTORTION OF IMAGE OVERLAP AREA, RECORDING MEDIUM, AND EXECUTION APPARATUS - Disclosed herein is a method of correcting the distortion of an image overlap area. The method includes identifying an overlap area between images projected by a plurality of projectors, obtaining information about the brightness of an image projected on the overlap area, and controlling the brightness of the image projected on the overlap area. Controlling the brightness of the image includes incorporating a transparency variable a into the image, and the transparency variable of an image projected by a specific projector is reduced toward remaining boundaries of the overlap area at a boundary of a non-overlap area and the overlap area. | 06-11-2015 |
20150161775 | METHOD OF CORRECTING IMAGE OVERLAP AREA, RECORDING MEDIUM, AND EXECUTION APPARATUS - Disclosed herein is a method of correcting an image overlap area. More specifically, the method includes steps of identifying an overlap area between images projected by a plurality of projectors, determining a difference in at least one of brightness and color between the overlap area and non-overlap area of images, analyzing RGB information of a projected image, and controlling brightness or color of an image projected on the overlap area or the non-overlap area in response to the RGB information. | 06-11-2015 |
20150161924 | METHOD FOR REPRESENTING VISIBLE AREA OF THEATER - Disclosed herein is a method of representing the visible area of a theater. The method may include generating a value of an angle at which a specific spot is seen from a reference spot within the theater and representing the visible area of the theater based on the value of the angle. | 06-11-2015 |
20150163447 | METHOD FOR GENERATING IMAGES FOR MULTI-PROJECTION THEATER AND IMAGE MANAGEMENT APPARATUS USING THE SAME - Disclosed herein is a method of generating images for a multi-projection theater and a method of generating projection images for a multi-projection theater, wherein a source image is mapped to a sphere, virtual planes according to the structure of a multi-projection theater are generated, and the source image on the sphere is projected on the virtual planes. The method may include mapping a source image to a sphere, generating a virtual plane according to the structure of a theater, and projecting the image on the sphere on the virtual plane. | 06-11-2015 |
Patent application number | Description | Published |
20100254470 | APPARATUS AND METHOD FOR SETTING PILOT SUBCARRIER - An apparatus for setting a pilot subcarrier in an antenna selects candidates of power value variables of a pilot subcarrier existing within a predetermined range, and calculates and extracts pilot subcarriers of a predetermined number on the basis of a nonlinear function among the candidates of the selected power value variables. Next, the apparatus removes pilot subcarriers of a predetermined number from the extracted pilot subcarriers of a predetermined number in accordance with a rule and configures the antenna on the basis of position values of final pilot subcarriers except for a virtual subcarrier among the removal result. Further, the apparatus configures the antenna on the basis of the power value by determining the sum total of the power values corresponding to the position values of the final pilot subcarriers to correspond to the number of pilot subcarriers. | 10-07-2010 |
20100316039 | APPARATUS AND METHOD FOR GENERATING RANGING CODE - An apparatus for generating a ranging code extracts a ranging code in each ranging mode, using a ranging code table storing one period data in bytes of the PN code according to a reference UL PermBase number, and an offset table that stores byte offsets for the start positions of the PN codes of the reference UL PermBase number and the other plurality of UL PermBase numbers and bit offsets in the byte including the start positions, on the basis of the PN code according to the reference UL PermBase number. | 12-16-2010 |
20110065465 | PRECODING METHOD AND APPARATUS, AND PRECODING CONTROL METHOD AND APPARATUS - To control precoding of a terminal in a serving base station, a first codeword that maximizes transmission power of the serving base station is determined by a codebook, and an index of a second codeword that minimizes interference to the neighboring base station is transmitted from the neighboring base station. The serving base station transmits an index of the first codeword, an index of the second codeword, and a combination ratio of a precoding matrix corresponding to the index of the first codeword and a precoding matrix corresponding to the index of the second codeword to the terminal. | 03-17-2011 |
20110116570 | METHOD OF TRANSMITTING SIGNAL AND METHOD OF RECEIVING SIGNAL - In a multicell communication system, a terminal that belongs to a second cell using the same subcarrier as a terminal that belongs to a first cell changes a pilot in an allocated basic resource block. Then, a base station that manages the first cell can estimate a channel of an interference signal transmitted from a second cell from a reception signal even though the reception signal includes an interference signal from the terminal that belongs to the second cell at the time of receiving a signal transmitted from the terminal that belongs to the first cell. Further, the base station that manages the first cell may reduce an interference signal from a reception signal by using a channel estimation value. | 05-19-2011 |
20110142149 | METHOD AND APPARATUS OF CODEBOOK TRANSFORMATION FOR INTERFERENCE MITIGATION IN CODEBOOK-BASED PRECODING - When a transmitter communicating with a first receiver interferes with an adjacent second receiver, the transmitter receives a reference signal from the second receiver in order to transform a codebook to mitigate interference in the second receiver. A channel with the second receiver is estimated through the received reference signal, and a receiving correlation matrix is calculated based on the estimated channel. The inverse of the receiving correlation matrix is calculated from the calculated receiving correlation matrix, and the codebook is transformed using the calculated inverse of the receiving correlation matrix. | 06-16-2011 |
20110142163 | APPARATUS AND METHOD FOR MAPPING SYMBOL - In a symbol mapping method, transmission data is encoded to output information bits and redundancy bits. The information bits and the redundancy bits are mapped to a symbol according to a first mapping scheme at a first transmission, and the information bits and the redundancy bits are mapped to a symbol according to a second mapping scheme at a second transmission. | 06-16-2011 |
20110188454 | COMMUNICATION APPARATUS AND COMMUNICATION METHOD - A communication apparatus which can operate as a cluster header and a node is disclosed. The cluster header transmits a cluster header preamble signal in a first time interval of the frame, and transmits a cluster control signal in a second time interval of the frame. The cluster header receives a node ranging signal in a third time interval of the frame, receives a node preamble in a fourth time interval of the frame, and receives a node control signal in a fifth time interval of the frame. The cluster header can determine the operation mode of a reported node. | 08-04-2011 |
20110206033 | COMMUNICATION METHOD BETWEEN WIRELESS NODES - In a wireless communication system, when a transmission node has data to be transmitted to a reception node, it checks an acknowledgement slot of the current communication frame and transmits information regarding a reception available acknowledgement slot to the reception node through a request-to-send (RTS) slot in the current communication frame, and the reception node transmits information regarding the data slot available for receiving among at least one data slot corresponding to the reception available acknowledgement slot to the transmission node through a clear-to-send (CTS) slot corresponding to the data request slot in the current communication frame. Thereafter, the transmission node transmits data to the reception node through a reservation data slot of the subsequent communication frame until the message transmission fails or finishes. | 08-25-2011 |
20120163257 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING IN MOBILE WIRELESS NETWORK - In a mobile wireless network system including a plurality of nodes communicating with each other, a node attempting to transmit data finds useable resources through performing carrier sensing on packet data unit (PDU) slots and transmits data through the found resources. A node attempting to receive data finds useable resource through performing carrier sensing on acknowledge (ACK) slots and receives data through the found resources. | 06-28-2012 |
20120163316 | METHOD AND APPARATUS FOR ALLOCATING RESOURCE IN MOBILE WIRELESS NETWORK - In a mobile wireless network system including a plurality of nodes, available resources of a transmitting node and available resources of a receiving node are searched for. Commonly overlapped allocatable resources among available resources of a transmitting node and available resources of a receiving node are searched for, areas corresponding to the calculated allocation resource number according to an allocation condition that is set in the allocatable resource area are selected, and the areas are allocated to the transmitting node or the receiving node. | 06-28-2012 |
20120287919 | SYNCHRONIZATION APPARATUS AND METHOD IN WIRELESS NETWORK SYSTEMS - A node synchronization apparatus in a wireless network system sets a fast Fourier transform (FFT) start point and requests a one-hop neighbor node to change its transmission time. The synchronization apparatus sets a signal receiving time and requests a one-hop neighbor node to change a receiving time. In this way, a node synchronizes signal transmission and signal reception. | 11-15-2012 |
20130250775 | METHOD OF FREQUENCY SYNCHRONIZATION IN DISTRIBUTED NETWORK - A method and apparatus for synchronizing a carrier frequency of a node included in a distributed network are provided. The apparatus includes a frequency offset estimating unit, an offset average value calculating unit, and a frequency adjustment value calculating unit. The method includes receiving preambles from a plurality of nodes adjacent to the node, estimating offsets of the carrier frequencies from the received preambles for each of the plurality of neighbor nodes, calculating an average value of the estimated offsets, calculating an adjustment value of the carrier frequencies with respect to the entirety of the plurality of neighbor nodes by using the average value, and adjusting a carrier frequency of the node on the basis of the adjustment value. | 09-26-2013 |
20130265898 | APPARATUS AND METHOD FOR ALLOCATING RESOURCE FOR AVOIDING INTERFERENCE OF WIRELESS COMMUNICATION SYSTEM - In a wireless communication system, a transmitting node selects a simultaneously transmit-unavailable node of a 1-hop node of the transmitting node, and allocates a transmitting resource in transmissible resources, except for a transmission scheduled resource of a simultaneously transmit-unavailable node. Further, a receiving node selects a simultaneously receive-unavailable node of a 1-hop node, which is a transmission target of the receiving node selects a simultaneously transmit-unavailable node of a 1-hop node of the receiving node, and allocates a receiving resource in receivable resources, except for a transmission scheduled resource to a simultaneously transmit-unavailable node of a simultaneously receive-unavailable node of the 1-hop node, which is a transmission target of the receiving node. | 10-10-2013 |
20140104999 | COMMUNICATION APPARATUS AND DATA TRANSMISSION METHOD THEREOF - A communication apparatus and a data transmission method of the communication apparatus are disclosed. The communication apparatus receives feedback messages corresponding to failed data from receivers, generates a feedback matrix in response to the feedback messages, selects transmission candidate data from the feedback matrix, performs network coding on the transmission candidate data, and transmits retransmission data generated by the network coding to the receivers. Transmission candidate data is selected from the feedback matrix, and network coding is performed on the transmission candidate data to retransmit data to the receivers. | 04-17-2014 |
20140133413 | METHOD AND APPARATUS FOR DESIGNING SIGNALS TO MITIGATE SUBCARRIER INTERFERENCE - In order to reduce interference that may be generated when a plurality of signals having different subcarrier intervals are received, a method of controlling a signal having a larger subcarrier interval to be suitable for a signal having a smaller subcarrier interval and a method of removing CFO interference are provided. Subcarrier intervals of a plurality of signals to be transmitted by wireless terminals are compared with each other, and signals are designed so that a signal having the largest subcarrier interval may be repeatedly transmitted. Therefore, interference that may be generated among different kinds of signals when the base station simultaneously receives the different kinds of signals to perform Fourier transform may be mitigated. In addition, interference caused by a CFO may be removed by previously compensating the CFO estimated in a time domain to perform Fourier transform. | 05-15-2014 |
20140185592 | METHOD AND APPARATUS FOR CORRECTING REFERENCE TIME FOR DISTRIBUTED TIME SYNCHRONIZATION - In a wireless communication system formed of a plurality of nodes, an arbitrary node receives messages broadcasted from neighbor nodes and calculates amounts of changes in receiving times that are differences between receiving times when the messages are currently received and receiving times when the messages are previously received with respect to the neighbor nodes. The node corrects reference time thereof based on the amounts of changes calculated with respect to the neighbor nodes. | 07-03-2014 |
20140293828 | METHOD AND APPARATUS FOR MANAGING SYNCHRONIZATION GROUPS IN WIRELESS COMMUNICATION SYSTEM - A synchronization group management apparatus of a node recognizes a node belonging to a different group if groups having mobility are moved and located in the same area, and performs an operation of merging the different groups into one group by changing the frame start time and the synchronization reference time of the node. | 10-02-2014 |
20140293830 | METHOD AND APPARATUS FOR EXCHANGING NETWORK CODING-BASED INFORMATION - An information exchange apparatus of each node for sharing information between a plurality of nodes receives request information from an adjacent node and determines an information transmitting node based on information that each node holds and request information from the adjacent node, and an information exchange apparatus of a node that is determined to be an information transmitting node generates candidate transmitting information by performing network coding of at least one information set of held information, determines one of candidate transmitting information sets as transmitting information, and transmits the candidate transmitting information set to the adjacent node. | 10-02-2014 |