Patent application number | Description | Published |
20130094442 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA IN WIRELESS COMMUNICATION SYSTEM - A User Equipment (UE) in a wireless communication system using a Coordinated Multi-Point transmission/reception (CoMP) scheme receives Downlink Control Information (DCI) including CoMP control information, determines a starting position of a data channel on wireless resources, based on starting position information of a data channel included in the CoMP control information and used in each of a plurality of cells, and receives data from the plurality of cells starting from the determined starting position. | 04-18-2013 |
20130107832 | FEEDBACK METHOD AND APPARATUS FOR COOPERATIVE MULTI-POINT COMMUNICATION IN COMMUNICATION SYSTEM | 05-02-2013 |
20130121249 | Method and apparatus for transmitting system information in a mobile communication system - A method and apparatus are provided for transmitting system information in a mobile communication system. The method includes configuring system information including first antenna configuration information and second antenna configuration information, and broadcasting the system information. The first antenna configuration information includes information about a number of antennas of a base station. | 05-16-2013 |
20130155978 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING PERIODIC CHANNEL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus in which a terminal transmits channel information for at least one serving cell to a base station in a wireless communication system is provided. The method for receiving periodic channel information by a base station in a wireless communication system includes determining whether to set a Physical Uplink Shared CHannel (PUSCH) mode for allowing a terminal to periodically transmit a plurality of channel information to the base station in one sub-frame, transmitting PUSCH mode information including a result of the determination to the terminal, and receiving the plurality of channel information from the terminal using a PUSCH in the one sub-frame, according to the result of the determination. | 06-20-2013 |
20130336300 | MOBILE COMMUNICATION SYSTEM AND DATA TRANSMISSION METHOD THEREOF - A data transmission method and apparatus is provided for transmitting UL grant or ACK/NACK at flexible subframes in a Time Division Duplex (TDD) system. The data transmission method of a base station according to the present invention includes configuring subframes irrelevant to Hybrid Automatic Repeat reQuest (HARQ) process as flexible subframes; scheduling uplink transmission at the flexible subframes with uplink grant; receiving uplink data transmitted by a terminal at the flexible subframes as scheduled; and transmitting, when decoding the uplink data fails, HARQ acknowledgement/negative acknowledgement (ACK/NACK) or uplink grant to request retransmission of the uplink data. The data transmission method of the present invention is capable of utilizing flexible subframes for uplink transmission without influencing the uplink HARQ process associated with the downlink subframes configured as flexible subframes. | 12-19-2013 |
20140086113 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CONTROL CHANNEL IN DYNAMIC TIME DIVISION DUPLEX SYSTEM - A method and system for transmitting and receiving a control channel in a dynamic Time Division Duplex (TDD) system. Upon receiving a control signal DCI for a first Hybrid Automatic Retransmission Request (HARQ) process from a Node B, a User Equipment (UE) determines whether TDD configuration is changed in a radio frame to which the DCI is to be applied. If the TDD configuration is changed, the UE determines from the DCI whether retransmission for the first HARQ process is required. If the retransmission required, the UE interprets some bits of a Modulation and Coding Scheme (MCS) field in the DCI as a target HARQ process index for the first HARQ process. As a result, the most is made of available UL data channel resources, contributing to an increase in the capacity of the dynamic TDD system and a reduction in packet delays of the UE. | 03-27-2014 |
20140086127 | METHOD AND APPARATUS FOR USING A PLURALITY OF CELLS IN COMMUNICATION SYSTEM - Methods and apparatus for using a plurality of cells by an evolved NodeB (eNB) in a communication system are provided. A first eNB, which manages a first cell and is providing a communication service to a User Equipment (UE) located in the first cell, determines to provide the communication service to the UE together with a second cell of a second eNB, which neighbors the UE. A cell addition request message, making a request for aggregation of the first cell and the second cell, is transmitted to the second eNB to provide the communication service. When a cell addition response message, accepting the request for aggregation of the first cell and the second cell, is received from the second eNB, a cell activation request message, making a request for activation of the second cell, is transmitted to the second eNB. | 03-27-2014 |
20140269596 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DOWNLINK CHANNEL STATE INFORMATION IN A MOBILE COMMUNICATION SYSTEM - Disclosed is a method and apparatus for transmitting channel state information (CSI) by a user equipment in a mobile communication system. The method includes receiving a CSI-reference signal (CSI-RS) for measuring a state of a downlink channel and a CSI feedback-related configuration from a base station (BS); determining a channel quality indication (CQI) for at least one transmission point and control information for determining a CQI for multiple transmission points, based on the received CSI-RS and CSI feedback-related configuration; and transmitting the determined CQI for the at least one transmission point and control information to the BS. | 09-18-2014 |
20140286176 | APPARATUS AND METHOD FOR RADIO LINK MONITORING IN A WIRELESS COMMUNICATION SYSTEM - An apparatus and method for radio link monitoring in a wireless communication system are provided, in which a transmission point communicating with a network where a Base Station (BS) and at least one Remote Radio Head (RRH) coexist within a cell receives Reference Signal Configuration Information (RSCI) from the network to which the transmission point belongs, receives RSs of at least one RS type indicated by the received RSCI from the BS and the at least one RRH that coexist within the cell, and performs radio link monitoring using the received RSs of the at least one RS type. | 09-25-2014 |
20140307597 | METHOD AND APPARATUS FOR CONTROLLING TRANSCEIVING OF PHYSICAL CHANNELS IN TIME DIVISION DUPLEX COMMUNICATION SYSTEM - Disclosed are a method and an apparatus for controlling the transceiving of physical channels in a time division duplex (TDD) communication system. The method comprises: a step of determining whether a point of time of HARQ ACK/NACK transmission in component carrier #1 and a point of time of the transmission of another signal in component carrier #2 coupled with the component carrier #1 are overlapped with each other; and a step of preferentially transmitting or receiving a HARQ ACK/NACK signal when the points of time of transmission are overlapped with each other. Thus, the method and the apparatus of the present invention may prevent transceiving error or transmission delay of data or a control channel. | 10-16-2014 |
20140321396 | CHANNEL STATE INFORMATION REQUEST/FEEDBACK METHOD AND APPARATUS - Methods and apparatuses are provided for Channel State Information (CSI) feedback. An Uplink (UL) grant is received from a Node B. Information included in the UL grant is identified. If the information is mapped to at least one DownLink (DL) Component Carrier (CC) based on configuration information relating to at least one set including the at least one DL CC, at least one CSI corresponding to the at least one DL CC is generated. The generated at least one CSI is transmitted to the Node B. | 10-30-2014 |
20140341089 | Interference measurement method and apparatus for controlling inter-cell interference in wireless communication system - The present disclosure relates to an interference measurement method and apparatus for controlling inter-cell interference in a Time Division Duplex (TDD) radio communication system and, in particular, to a technology for a base station to configure a radio frame capable of controlling interference with adjacent base stations and to measure interference based on the radio frame configured as such. In an embodiment of the present disclosure, the first base station sends the second base station the first radio frame configuration information and the second radio frame configuration information including a subset of uplink subframes of the first radio frame configuration. The second base station configures the intersection of uplink subframes of the first and second radio frame configurations into the first interference measurement subframe set and difference of the sets of the subframes of the respective first and second radio frame configurations into the second interference measurement subframe set. The second base station measures uplink interference signals of the neighbor cell during the first interference measurement subframe set and the downlink interference signal of the neighbor cell during the second interference measurement set and transmits the measurement result to the first base station. Through this method, the base station is capable of predicting uplink coverage of the neighbor cell during the first interference measurement subframe set and the downlink coverage of the neighbor cell during the second interference measurement subframe set for controlling inter-cell interference. | 11-20-2014 |
20140348144 | TERMINAL SIGNAL TRANSMISSION TIMING RANDOMISATION METHOD AND DEVICE IN WIRELESS COMMUNICATION SYSTEM - The present disclosure relates to a terminal signal transmission timing randomisation method and device in a wireless communication system, and the terminal signal transmission method in a wireless communication system of the present disclosure comprises the steps of: receiving, from a base station, setting information for randomising transmission timing with respect to a signal transmitted by a terminal; determining the transmission timing for the signal in accordance with the setting information; and transmitting the signal to the base station in accordance with the determined transmission timing. | 11-27-2014 |
20150023231 | METHOD AND APPARATUS FOR TRANSCEIVING CHANNEL RELATED TO TERMINAL THAT SUPPORTS HALF DUPLEX TRANSMISSION IN MOBILE COMMUNICATION SYSTEM - Disclosed are a method and an apparatus for transceiving a channel related to a terminal that supports half duplex transmission in a mobile communication system. The terminal receives scheduling information on multi-carriers having different TDD configurations from a base station, determines whether to receive a downlink channel for a plurality of different subframes of each multi-carrier including at least one special subframe, and transceives a channel to/from the base station depending on whether the downlink channel is received or not. | 01-22-2015 |
20150078314 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING PERIODIC CHANNEL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus in which a terminal transmits channel information for at least one serving cell to a base station in a wireless communication system is provided. The method for receiving periodic channel information by a base station in a wireless communication system includes determining whether to set a Physical Uplink Shared CHannel (PUSCH) mode for allowing a terminal to periodically transmit a plurality of channel information to the base station in one sub-frame, transmitting PUSCH mode information including a result of the determination to the terminal, and receiving the plurality of channel information from the terminal using a PUSCH in the one sub-frame, according to the result of the determination. | 03-19-2015 |
Patent application number | Description | Published |
20080239143 | METHOD AND APPARATUS FOR ADAPTIVELY CONVERTING FRAME RATE BASED ON MOTION VECTOR, AND DISPLAY DEVICE WITH ADAPTIVE FRAME RATE CONVERSION FUNCTION - An interpolation image generation method and apparatus for adaptively converting a frame rate based on a motion vector, and a display device having an adaptive frame rate conversion function are provided. The interpolation image generation method includes an interpolation image generation process calculating motion vectors from a previous image unit and a subsequent image unit that are continuous and generating an interpolation image using the motion vectors; a motion error boundary detection process detecting an area, in which a motion error determined from the motion vectors is greater than a predetermined value, as a boundary area of the interpolation image; and a motion compensation process compensating for a motion error inside the detected boundary area based on a dominant direction of the motion vectors using at least one of the previous image unit and the subsequent image unit. | 10-02-2008 |
20090153733 | METHOD AND APPARATUS FOR INTERPOLATING IMAGE - Provided are a method and apparatus for interpolating an image, that improve frequency characteristics of a motion compensated interpolation by combining motion compensation and a de-blurring filter. The image interpolation method includes: estimating a motion vector between adjacent frames; determining a location of a pixel that is to be interpolated between adjacent frames based on the estimated motion vector; selecting values of candidate pixels of the location of the pixel that is to be interpolated; and filtering the values of the candidate pixels by applying each filter coefficient according to locations of pixels to the values of the candidate pixels. | 06-18-2009 |
20100110293 | APPARATUS AND METHOD FOR DETERMINING NOISE - A noise determining apparatus is provided. The noise determining apparatus includes a video determiner which determines type of video according to a pre-set criterion, a noise level determiner which determines a level of noise with reference to output from the video determiner, and a noise determiner which determines presence or absence of noise with reference to output from the noise level determiner. Accordingly, incorrect discrimination between a texture area of low level which is similar to noise and noise having a great level difference with respect to neighboring pixels is reduced. | 05-06-2010 |
20100150465 | METHOD AND APPARATUS FOR REMOVING IMAGE NOISE - Provided are a method and apparatus for removing image noise. The method includes: separating an input image signal into a signal component and a noise component; converting the noise component into a decorrelated noise component that is spatiotemporally decorrelated from neighboring pixels; and generating an image signal by adding the decorrelated noise component to the signal component. | 06-17-2010 |
20110050992 | IMAGE PROCESSING APPARATUS AND IMAGE MOTION ESTIMATING METHOD - An image processing apparatus is provided, which includes an image buffer which stores therein images that are input consecutively; and a controller which estimates a motion by using a reference block that is formed on the basis of a current frame image, and a search area including image data on one of an even line and an odd line of a frame image adjacent to the current frame image and image data on an interpolated remaining line. | 03-03-2011 |
20110050993 | MOTION ESTIMATING METHOD AND IMAGE PROCESSING APPARATUS - Disclosed are a motion estimating method for an image and an image processing apparatus. A motion estimating method of an image, the method including: calculating a candidate motion vector by using one of a forward motion estimation and a backward motion estimation from a reference block extracted from one of first and second images that are input consecutively, and a search area extracted from the other one of the first and second images; calculating a pseudo motion vector corresponding to the other one of the forward motion estimation and the backward motion estimation by using the candidate motion vector; and interpolating the first and second images by using at least one of the candidate motion vector and the pseudo motion vector. | 03-03-2011 |
20110180779 | NANOSTRUCTURED THIN FILM, SURFACE LIGHT SOURCE AND DISPLAY APPARATUS EMPLOYING NANOSTRUCTURED THIN FILM - A nanostructured thin film used in a surface light source, including a dielectric layer, and nanostructures that are arranged periodically in the dielectric layer, wherein light emitted from the nanostructured thin film has directivity according to the nanostrucures. | 07-28-2011 |
20120086994 | APPARATUS AND METHOD FOR HOLOGRAPHY 3-DIMENSIONAL DISPLAY - An apparatus includes a recording light source configured to emit recording beams, an electrically addressable spatial light modulator (EASLM) configured to time sequentially modulate the recording beams emitted from the recording light source according to hologram information corresponding to a 3-dimensional image spatially divided into a plurality of portions, an optically addressable spatial light modulator (OASLM) configured to include a plurality of regions corresponding to the plurality of the divided portions of the 3-dimensional image and images on a region corresponding to the portions using the modulated recording beams to form a hologram, a scanning optical unit configured to reproduce the hologram formed by the recording beams serially modulated by the EASLM on a reduced scale and transmit the hologram to the regions of the OASLM corresponding to the portions, and a reproducing light source configured to produce a surface light and emit the surface light to the OASLM. | 04-12-2012 |
20120127163 | IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - An image processing apparatus and an image processing method are provided. The image processing apparatus includes an image receiver which receives a plurality of image frames each including a first image and a second image respectively corresponding to a first eye and a second eye of a user, and an image processor which detects a pixel of the second image corresponding to at least one pixel of the first image and updates the first image based on information about the detected pixel of the second image. | 05-24-2012 |
20120154558 | DISPLAY APPARATUS AND METHOD FOR PROCESSING IMAGE THEREOF - A display apparatus and a method for processing an image thereof are provided. The display apparatus includes an image input unit which receives an image, an image processing unit which generates a left eye image and a right eye image corresponding to the input image, a control unit which generates a virtual obstacle corresponding to an obstacle interrupting viewing of the input image, and adds the virtual obstacle to the left eye image and the right eye image, and a display unit which outputs a left eye image and a right eye image, to which the virtual obstacle has been added, alternately. Accordingly, collision of recognition regarding depth information due to an obstacle may be prevented and thus, a user may enjoy a stereoscopic 3D image. | 06-21-2012 |
20120170097 | LIGHT MODULATORS AND OPTICAL APPARATUSES INCLUDING THE SAME - Provided are examples of light modulators and optical apparatuses that may include the light modulators. A light modulator may include a plasmonic nano-antenna and an element for changing plasmon resonance characteristics of the plasmonic nano-antenna. The plasmon resonance characteristics of the plasmonic nano-antenna may be changed due to a change in refractive index of the element, and thus light may be modulated. | 07-05-2012 |
20120183699 | METHOD FOR FABRICATING FLEXIBLE BOARD USING SOLUTION PROCESS - Disclosed is a method for fabricating a flexible board using carbon nanotubes. The method includes applying a carbon nanotube-containing ink onto a substrate to form a deposited layer, and coating a polymeric or monomeric solution on the deposited carbon nanotube layer to form a thin film layer. In accordance with the method, the spin-coated carbon nanotube layer is coated with the polymeric or monomeric chemical solution to minimize an area where the base substrate contacts the polymeric film and thereby to advantageously form a flexible board readily separable from the substrate without applying any external stress or laser. | 07-19-2012 |
20120194885 | NANOSTRUCTURED ACOUSTO-OPTIC DEVICE, AND OPTICAL SCANNER, OPTICAL MODULATOR, AND HOLOGRAPHIC DISPLAY APPARATUS USING THE NANOSTRUCTURED ACOUSTO-OPTIC DEVICE - An acousto-optic device capable of increasing a range of a diffraction angle of output light by using a nanostructured acousto-optic medium, and an optical scanner, an optical modulator, a two-dimensional/three-dimensional (2D/3D) conversion stereoscopic image display apparatus, and a holographic display apparatus using the acousto-optic device. The acousto-optic device may include a nanostructured acousto-optic medium formed by at least two different mediums repeatedly alternating with each other, wherein at least one of the at least two different mediums includes an acousto-optic medium. The acousto-optic device having the aforementioned structure may increase the range of a diffraction angle of output light. Thus, various systems such as the optical scanner, the optical modulator, the 2D/3D conversion stereoscopic image display apparatus, and the holographic display apparatus may not require a separate optical system to increase an operational angle range, thereby decreasing a size of the system and/or improving a resolution of the system. | 08-02-2012 |
20120257484 | OPTICAL ELEMENTS AND INFORMATION STORAGE DEVICES INCLUDING THE SAME - An optical element and an information storage device including the same. The optical element may include an optical waveguide structure for transforming circularly polarized light into plasmon and transmitting the plasmon. The optical waveguide structure may emit a circularly polarized plasmonic field. The optical element may be used in an information storage device. For example, the information storage device may include a recording medium and a recording element for recording information on the recording medium, and the recording element may include the optical element. The information may be recorded on the recording medium by using the circularly polarized plasmonic field generated by the optical element. | 10-11-2012 |
20120280340 | MEMORY DEVICES AND METHODS OF MANUFACTURING THE SAME - A memory device includes a lower electrode formed on a substrate, and an information storage unit formed on the lower electrode. The information storage unit includes a plurality of information storage layers spaced apart from one another. Each of the plurality of information storage layers is an information unit. A method of manufacturing a memory device uses a porous film to form the plurality of information storage layers. | 11-08-2012 |
20130002817 | IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD THEREOF - An apparatus and method for processing an image are provided. The image processing apparatus uses a two-dimensional (2D) video signal and depth information corresponding to the 2D video signal to generate a three-dimensional (3D) video signal includes: an image receiver which receives a 2D video signal containing a background and an object; and an image processor which adjusts a transition area corresponding to a boundary between the object and the background in the depth information, and renders a 3D image from the 2D video signal through the adjusted transition area. | 01-03-2013 |
20130003066 | ACOUSTO-OPTIC DEVICE HAVING MULTI-LAYER NANOSTRUCTURE, OPTICAL SCANNER, OPTICAL MODULATOR, AND DISPLAY APPARATUS USING THE ACOUSTO-OPTIC DEVICE - An acousto-optic device includes an acousto-optic medium having a multi-layer nanostructure; and a sonic wave generator configured to apply sonic waves to the acousto-optic medium having the multi-layer nanostructure. The acousto-optic medium having the multi-layer nanostructure includes a second layer formed of at least two materials that have different dielectric constants and alternate with each other; and a first layer disposed on a first surface of the second layer and formed of a first material, and/or a third layer disposed on a second surface of the second layer and formed of a fourth material. | 01-03-2013 |
20130057647 | APPARATUS AND METHOD FOR CONVERTING 2D CONTENT INTO 3D CONTENT - Disclosed are an apparatus and method for converting 2D video contents into 3D video contents. The method includes: displaying a first work user interface (UI) relating to at least one item for converting 2D contents into 3D contents; by a first worker, determining a working direction relating to performing a conversion upon the at least one item by using the first work UI; displaying a second work UI showing the working direction determined by the first worker; and by a second worker, executing the working direction upon the at least one item by the second work UI. Accordingly, when a plurality of workers performs one or more 2D-3D conversions, work efficiency is improved, and good communication between workers is enabled. | 03-07-2013 |
20130057648 | APPARATUS AND METHOD FOR CONVERTING 2D CONTENT INTO 3D CONTENT - Disclosed are an apparatus and method for converting video contents, each of which converts 2D contents into 3D contents. The method includes: determining an object to be extracted from a plurality of frames which contain 2D contents; determining a respective possession degree of information about the object to be extracted, with regard to each of the plurality of frames; selecting at least one key frame from among the plurality of frames in accordance with the determined possession degrees of information about the object to be extracted; extracting an object with regard to the selected key frame; assigning depth for conversion into 3D contents to the object to be extracted; and performing tracking upon all but the key frame from among the plurality of frames. Accordingly, the 2D-3D conversion can be performed with high accuracy and reliability. | 03-07-2013 |
20130076858 | METHOD AND APPARATUS FOR CONVERTING 2D CONTENT INTO 3D CONTENT - A method and apparatus for converting two-dimensional (2D) contents into three-dimensional (3D) contents is disclosed. The method including: displaying a frame, the frame containing an object which will be extracted from among plural frames contained in the 2D contents; designating a boundary region of an object to be extracted on the displayed frame, in accordance with a user command through a user interface (UI) for collectively designating a region; generating a trimap based on the designated boundary region including inner and outer regions of the object to be extracted, and extracting the object based on the generated trimap. With this, a user can more conveniently and efficiently convert 2D contents into 3D contents. | 03-28-2013 |
20130093760 | APPARATUS AND METHOD FOR GENERATING DEPTH INFORMATION - A method for generating depth information includes: receiving an input image including a plurality of frames; identifying a first frame that is selected from the plurality of frames; obtaining first depth information of a first object that is selected from the first frame; selecting a second frame from the plurality of frames; tracing a second object from the second frame based on the first object; and generating second depth information of the second object from the first depth information based on a comparison result between a position of the first object on the first frame and a position of the second object on the second frame. | 04-18-2013 |
20130100513 | 3-DIMENSIONAL HOLOGRAPHIC IMAGE DISPLAYING APPARATUS - A 3-dimensional (3D) holographic image displaying apparatus is provided. The apparatus includes a hologram reproducer configured to generate surface plasmons in response to incident light and reproduce a 3D image by diffracting the generated surface plasmons by a hologram, and a surface light source unit including a light source and a light guide plate, the light guide plate being configured to allow incident light from the light source to enter into the light guide plate, internally reflect the allowed light, and output the internally reflected light through a light-output surface, the surface light source unit being configured to implement colors by adjusting an angle of the light incident to the hologram reproducer so that the outputted light through the light-output surface is incident to the hologram reproducer at a surface plasmon-forming angle for each wavelength to generate the surface plasmons corresponding to a plurality of color beams. | 04-25-2013 |
20130113848 | DISPLAY DEVICE AND DRIVING METHOD OF DISPLAY DEVICE - A method of driving a display device includes analyzing input data of the display device to confirm whether there is a predetermined image pattern in an image corresponding to the input data, where a common voltage is distorted to an extent that a clock signal for a gate driver of the display device is distorted when the display device displays the image including the predetermined image pattern, and changing a slew rate of an output buffer of a data driver of the display device based on a result of the analyzing the input data. | 05-09-2013 |
20130215483 | PLASMONIC MODULATOR AND OPTICAL APPARATUS INCLUDING THE SAME - A plasmonic modulator and an optical apparatus including the same are provided. The plasmonic modulator includes a first metal layer, and a second metal layer facing the first metal layer. The plasmonic modulator further includes a refractive index varying layer disposed between the first and second metal layers and including a varying refractive index, and an insulating nitride layer disposed between the refractive index varying layer and the first metal layer. | 08-22-2013 |
20130301951 | METHOD AND APPARATUS FOR REMOVING IMAGE NOISE - Provided are a method and apparatus for removing image noise. The method includes: separating an input image signal into a signal component and a noise component; converting the noise component into a decorrelated noise component that is spatiotemporally decorrelated from neighboring pixels; and generating an image signal by adding the decorrelated noise component to the signal component. | 11-14-2013 |
20140035905 | METHOD FOR CONVERTING 2-DIMENSIONAL IMAGES INTO 3-DIMENSIONAL IMAGES AND DISPLAY APPARATUS THEREOF - A method for converting 2-dimension (2D) image into a 3-dimension (3D) image and a display apparatus. The method may include: generating a depth frame of key frames of a plurality of image frames; calculating a motion vector between the image frames; interpolating an intermediate depth frame corresponding to intermediate frames between the key frames by using the depth frame and the motion vector; and generating left and right eye images of the plurality of image frames by using the depth frame and the interpolated depth frame. Therefore, the display apparatus minimizes occurrences of errors and generates a depth frame approximate to a real depth frame | 02-06-2014 |
20140063005 | APPARATUS AND METHOD FOR DISPLAY - Display apparatus and method are provided. The display apparatus may include a receiver for receiving an image; a grouper for analyzing the received image and grouping a plurality of frames of the received image based on the analysis; a depth allocator for determining at least two key frames from a plurality of frames grouped into at least one group, and allocating a depth per object in the determined key frames; and an image generator for generating a 3D image corresponding to other frames excluding the key frames based on a depth value allocated to the key frames. Hence, the display apparatus can allocate the depth value of a higher quality to the object in the frames of the received image. | 03-06-2014 |
20140064625 | IMAGE PROCESSING APPARATUS AND METHOD - An image processing apparatus and method include a receiver configured to receive an image, a display configured to display the received image, an extractor configured to extract a first object contour by applying a preset algorithm to an area of the displayed image designated by a user and extract a second object contour based on the designated area, an image analyzer configured to analyze the displayed image, and a controller configured to determine weight values for the first and second object contours based on an analysis result of the image analyzer and extract an object contour based on the first and second object contours to which the determined weight values are applied. The image processing apparatus extracts an object intended by a user even in a heavily noisy image. | 03-06-2014 |
20140160077 | DISPLAY INCLUDING SIGNAL TRANSMISSION SCHEME USING OPTICAL INTERCONNECTION AND ELECTRICAL INTERCONNECTION - A display employing a signal transmission scheme using an optical interconnection together with an electrical interconnection is provided. The display includes a screen including a plurality of sub displays configured to display information, a plurality of sub signal processors electrically connected to the plurality of sub displays, the sub signal processors being configured to perform conversion between an optical signal and an electrical signal, and a main signal processor optically connected to at least a portion of the plurality of sub signal processors. | 06-12-2014 |
20140181755 | VOLUMETRIC IMAGE DISPLAY DEVICE AND METHOD OF PROVIDING USER INTERFACE USING VISUAL INDICATOR - Provided is a volumetric image display apparatus for providing a user interface using a visual indicator, the apparatus including a recognition unit to recognize an input object in a predetermined three-dimensional (3D) recognition space, a visual indicator location determining unit to determine a location of the visual indicator in a predetermined volumetric image display space, based on the input object, and a display unit to display the visual indicator in the predetermined volumetric image display space, based on the location of the visual indicator. | 06-26-2014 |
20140184669 | MULTI LAYER DISPLAY APPARATUS - A multilayer display apparatus for outputting a single integrated image includes a plurality of layer displays to represent an image, and an image control unit to control a single integrated image to be output through overlapping images represented by the plurality of layer displays. | 07-03-2014 |
20140185122 | LIGHT MODULATORS AND OPTICAL APPARATUSES INCLUDING THE SAME - Provided are examples of light modulators and optical apparatuses that may include the light modulators. A light modulator may include a plasmonic nano-antenna and an element for changing plasmon resonance characteristics of the plasmonic nano-antenna. The plasmon resonance characteristics of the plasmonic nano-antenna may be changed due to a change in refractive index of the element, and thus light may be modulated. | 07-03-2014 |
20140240812 | ACOUSTO-OPTIC DEVICE, AND LIGHT MODULATOR, OPTICAL SCANNER AND DISPLAY APPARATUS USING THE ACOUSTO-OPTIC DEVICE - Provided is an acousto-optic device including an elastic medium; a meta structure formed on a first surface of the elastic medium, and an elastic-wave generating unit which generates an elastic wave in the elastic medium. The meta structure includes a first layer and a second layer that is formed on the first layer. The at least one of the first layer and the second layer includes a predetermined repetitive pattern. | 08-28-2014 |
20140267638 | DISPLAY APPARATUS FOR VISUAL AND AUDIO MULTIPLEXED DISPLAY - A display apparatus for visual and audio multiplexed display may include a directive display unit configured to display a plurality of pieces of visual information toward a corresponding plurality of locations, wherein each of the plurality of pieces of visual information is output toward a specific location of the plurality of locations. The display apparatus may also include a directive speaker unit configured to transmit a plurality of pieces of audio information toward the plurality of locations, wherein each of the plurality of pieces of audio information is output toward a specific location of the plurality of locations, and a central control unit configured to control the directive display unit and the directive speaker unit. | 09-18-2014 |
20140268264 | SPATIAL LIGHT MODULATOR, HOLOGRAPHIC THREE-DIMENSIONAL IMAGE DISPLAY INCLUDING THE SAME, AND METHOD FOR MODULATING SPATIAL LIGHT - A spatial light modulator, a holographic image display including the same, and a method for spatially modulating light. The spatial light modulator modulates a phase of light that is incident on a plurality of pixels and includes a variable refractive index layer that has a refractive index which is variable based on one of an optical signal and an electrical signal, and a metal layer that is disposed on the refractive index-change layer, and a high refractive index layer on the metal layer. Light incident on the metal layer causes generation of a surface plasmon at an interface between the variable refractive index layer and the metal layer. | 09-18-2014 |
20140285727 | OPTICAL APPARATUS INCLUDING NON-ELECTRIC TYPE TOUCH PANEL - An optical apparatus includes a touch substrate; a waveguide layer arranged on the touch substrate, the waveguide layer including a plurality of waveguides; an optical output structure arranged on the waveguide layer and configured to output light propagating in the plurality of waveguides at touched locations on the touch substrate; a gap layer arranged to provide a predetermined gap between the waveguide layer and the optical output structure; and an optical system, which projects light output by the optical output structure. | 09-25-2014 |
20150070245 | COIL-BASED ARTIFICIAL ATOM FOR METAMATERIALS, METAMATERIAL COMPRISING THE ARTIFICIAL ATOM, AND DEVICE COMPRISING THE METAMATERIAL - Provided are an artificial atom of a metamaterial by coiling up space, a metamaterial including the artificial element, and a device including the metamaterial. The artificial atom of the metamaterial by coiling up space includes a first coiling unit that coils up a first space and a second coiling unit that coils up a second space and that is connected with the first coiling unit. | 03-12-2015 |
20150160530 | ACOUSTO-OPTIC ELEMENT, ACOUSTO-OPTIC ELEMENT ARRAY, AND DISPLAY APPARATUS INCLUDING THE ACOUSTO-OPTIC ELEMENT - Provided are an acousto-optic element, an acousto-optic element array, and a display apparatus including the acousto-optic element array. The acousto-optic element includes: an acousto-optic modulator which includes an acousto-optic layer formed of an acousto-optic material; a light supplier which supplies light to the acousto-optic modulator in a first direction; a first sound-wave modulator which applies first elastic waves to the acousto-optic modulator in a second direction; and a second sound-wave modulator which applies second elastic waves to the acousto-optic modulator in a third direction. The light supplied from the light supplier to the acousto-optic modulator is deflected by diffraction caused by the first elastic waves applied from the first sound-wave modulator and diffraction caused by the second elastic waves applied from the second sound-wave modulator, and is output from the acousto-optic modulator through a front side of the acousto-optic modulator. | 06-11-2015 |
20150160612 | APPARATUS AND METHOD FOR DISPLAYING HOLOGRAPHIC THREE-DIMENSIONAL IMAGE - An apparatus for displaying a holographic three-dimensional (3D) image is provided. The apparatus includes: a holographic pattern generation unit; a spatial optical modulation device including a phase transition layer formed of a phase transition material, a phase of which is changed by a temperature. A holographic pattern generated by the holographic pattern generation unit is optically addressed on the spatial optical modulation device. The apparatus also includes a heat source for applying heat to the phase transition layer; a control unit for controlling the heat source according to holographic pattern information generated by the holographic pattern generation unit; and a reproduction light source for irradiating light for image reproduction onto the spatial optical modulation device. | 06-11-2015 |
20150253644 | ACOUSTO-OPTIC DEVICE HAVING WIDE DIFFRACTION ANGLE, OPTICAL SCANNER, LIGHT MODULATOR, AND DISPLAY APPARATUS USING THE ACOUSTO-OPTIC DEVICE - An acousto-optic device having a wide range of diffraction angle and an optical scanner, a light modulator, and a display apparatus using the acousto-optic device are provided. The acousto-optic device includes a core layer having a periodic photonic crystal structure in which unit cells of predetermined patterns are repeated, a first clad layer on a first surface of the core layer, the first clad layer having a refractive index that is different from a refractive index of the core layer, a second clad layer on a second surface of the core layer, the second surface being opposite the first surface, the second clad layer having a refractive index that is different from the refractive index of the core layer, and a sound wave generator configured to apply surface acoustic waves (SAW) to the core layer, the first clad layer, the second clad layer, or any combination thereof. | 09-10-2015 |
Patent application number | Description | Published |
20080279358 | Apparatus and method for performing call connection in a communication system - A call connection method and apparatus in a communication system are provided, in which a call connection request message is received from each of first and second terminals, it is determined whether the first and second terminals are requesting a call connection to each other, one of the first and second terminals is selected if the first and second terminals are requesting a call connection to each other, the call connection request of the selected terminal is rejected, and a call is connected between the first and second terminals by performing a call connection to the selected terminal according to the call connection request of the non-selected terminal. | 11-13-2008 |
20090157309 | METHOD FOR EXCHANGING MESSAGES IN A NAVIGATION SYSTEM USING VISIBLE LIGHT COMMUNICATIONS - Method and device for exchanging messages in a VLC navigation system is provided, in which a map server generates a provision message in the form of visible light signals through all lamps in an area, using a PLC network, where a navigation service is provided, a terminal that wants to implement the navigation service among terminals that have received the provision message transmits a registration request message to the map server, the map server transmits a registration response message for the registration request message to the terminal, the terminal transmits a map request message including information about a destination to the map server, the map server transmits a map response message including information about a path to the destination to the terminal, and the terminal displays map information and the path. | 06-18-2009 |
20090171571 | Navigation system and method using visible light communication - A system and method for providing an in-building navigation service using VLC are provided, in which transmitters control lamp modules to generate visible light signals each in a combination of different wavelengths as information for a navigation function, a mobile terminal receives visible light signals from a plurality of lamp modules that illuminate an area where the mobile terminal is located, location information about a current location of the mobile terminal is acquired through the visible light signals received from the plurality of lamp modules, and navigation information including information that matches the location information to map information is displayed on the mobile terminal. | 07-02-2009 |
20090180780 | APPARATUS AND METHOD FOR TRANSMITTING DATA IN WIRELESS VISIBLE LIGHT COMMUNICATION SYSTEM - Disclosed is a method for transmitting data in a wireless visible light communication system, the method including the steps of transmitting a pilot signal for obtaining channel state information according to each channel from a transmitter to a receiver, and transmitting a pilot response signal containing channel state information according to each channel from the receiver to the transmitter; controlling, by the transmitter, a data rate according to the pilot response signal, transmitting, by the transmitter, data to the receiver, with data rate information inserted into a header and controlling, by the receiver, a data rate according to each channel by making reference to data included in the header information. | 07-16-2009 |
20100061395 | SELF-ORGANIZING RESOURCE ACCESS APPARATUS AND METHOD IN LOCAL AREA NETWORK COMMUNICATION ENVIRONMENT - A self-organizing resource access method is provided for transmitting data by self-organizing resource access by each individual node in a Local Area Network (LAN) communication environment where at least two nodes exchange data with each other. A first node listens to at least one data transmission of at least one other node connected to the LAN, and adjusts a data transmission start time of the first node in accordance with a data transmission start time of the at least one other node so that the data transmission start time of the first node does not overlap the data transmission start time of the at least one other node. The first node transmits data to the at least one other node at the adjusted data transmission start time. | 03-11-2010 |
20110007672 | COMMUNICATION METHOD AND APPARATUS IN WIRELESS BODY AREA NETWORK - Short range wireless communication is provided. A first node included in a Wireless Body Area Network (WBAN) communicates with at least one neighboring second node. The first node transmits or receives data to or from at least one device node connected to the first node during a time division communication period, using a super-frame in which the time division communication period, a time division schedule advertisement message transmission period, and a Contention Access Period (CAP) are sequentially arranged. The first node broadcasts a time division schedule advertisement message of the first node to the at least one second node during the time division schedule advertisement message transmission period within the super-frame. Upon receiving a time division schedule advertisement message from the second node during the CAP within the super-frame, the first node adjusts a data transmission or reception time for the at least one device node connected to the first node using the received time division schedule advertisement message. | 01-13-2011 |
20110070836 | METHOD FOR OPERATING MULTI-TYPE BEACONS - Provided is a method for operating multi-type beacons by a first terminal connected with at least one second terminal through short-range communication. The method includes checking at least one variable related to the second terminal, allocating one selected from a plurality of beacons having different characteristics to the second terminal, taking into account the checked variable, and transmitting the beacon allocated to the second terminal. | 03-24-2011 |
20110221389 | WIRELESS POWER CHARGING METHOD AND APPARATUS FOR ELECTRONIC DEVICE - A bidirectional wireless charging method includes performing a mode change to a requesting electronic device if charging is necessary, requesting charging from at least one electronic device, receiving status information from the at least one electronic device that has received the charging request, selecting the electronic device based on the status information, and performing charging by receiving power supplied from the selected at least one electronic device. | 09-15-2011 |
20110221390 | WIRELESS POWER CHARGING METHOD AND APPARATUS - A wireless charging method and apparatus wirelessly charges power between separate electronic appliances. The wireless charging method includes searching for at least one chargeable electronic device, receiving status information from the searched at least one electronic device, determining whether the electronic device is a power supply electronic device or a power demand electronic device, receiving a supply of power from the searched at least one electronic device if the electronic device is determined to be the power demand electronic device, and supplying the power to the at least one electronic device if the electronic device is determined to be the power supply electronic device. | 09-15-2011 |
20110221391 | METHOD FOR WIRELESS CHARGING USING COMMUNICATION NETWORK - A method for wireless charging of an electronic apparatus includes: requesting a server for information regarding chargeable electronic devices; receiving the information regarding chargeable electronic devices from the server; and performing charging with at least one electronic device. | 09-15-2011 |
20110225073 | APPARATUS AND METHOD FOR PERFORMING WIRELESS CHARGING - A wireless charging method includes searching one or more rechargeable electronic devices, receiving power service information from one or more searched electronic devices, determining whether the one or more searched electronic devices are rechargeable based on the received power service information, and if the one or more searched electronic devices are rechargeable, receiving power from the electronic devices. | 09-15-2011 |
20110313660 | METHOD FOR EXCHANGING MESSAGES IN A NAVIGATION SYSTEM USING VISIBLE LIGHT COMMUNICATIONS - Method and device for exchanging messages in a VLC navigation system is provided, in which a map server generates a provision message in the form of visible light signals through all lamps in an area, using a PLC network, where a navigation service is provided, a terminal that wants to implement the navigation service among terminals that have received the provision message transmits a registration request message to the map server, the map server transmits a registration response message for the registration request message to the terminal, the terminal transmits a map request message including information about a destination to the map server, the map server transmits a map response message including information about a path to the destination to the terminal, and the terminal displays map information and the path. | 12-22-2011 |
20120089325 | METHOD FOR EXCHANGING MESSAGES IN A NAVIGATION SYSTEM USING VISIBLE LIGHT COMMUNICATIONS - Method and device for exchanging messages in a VLC navigation system is provided, in which a map server generates a provision message in the form of visible light signals through all lamps in an area, using a PLC network, where a navigation service is provided, a terminal that wants to implement the navigation service among terminals that have received the provision message transmits a registration request message to the map server, the map server transmits a registration response message for the registration request message to the terminal, the terminal transmits a map request message including information about a destination to the map server, the map server transmits a map response message including information about a path to the destination to the terminal, and the terminal displays map information and the path. | 04-12-2012 |
20130010595 | MUTUAL BROADCAST PERIOD AND CONTENTION ACCESS PERIOD OPERATING SYSTEM AND METHOD FOR LOAD CONTROL - A method and a system for operating a Mutual Broadcast Period (MBP) and Contention Access Period (CAP) for load control are provided. The proposed system and method is suitable for a short-range communication environment such as communication environment in or around the human body, and is for a mesh network communication environment in which one piconet is formed around the human body or a plurality of devices are connected. When signals carrying biometric information are periodically received from a plurality of sensor devices for medical purposes, the system and method may achieve efficient resource access by performing load control in a distributed manner, contributing to a reduction in access delay and power consumption and enabling appropriate QoS control. | 01-10-2013 |
20130039440 | APPARATUS AND METHOD FOR SUPPORTING DEVICE TO DEVICE SERVICE - Methods and apparatus are provided for searching for a peripheral device and transmitting device information in a device-to-device service. First information is transmitted using a first tone in a first region of a search duration. A second tone is determined by transposing a subcarrier index and a symbol index of the first tone. The first information is transmitted through the second tone in a second region of the search duration. First information of a peripheral device is received in the first and the second region of the search duration. The second information is transmitted through a resource region corresponding to the first tone in a third region of the search duration. Second information of the peripheral device is received in the third region of the search duration. Device information of the peripheral device is determined by combining the first and second information of the peripheral device. | 02-14-2013 |
20130077548 | APPARATUS AND METHOD FOR DETERMINING GATEWAY CONSIDERING LOW POWER - An apparatus and a method for determining a gateway using lower power are provided. The method includes setting probing transmission power for setting the gateway, transmitting a probing request message to another mobile station existing in a cluster with the set probing transmission power, when a probing response message is received from the other mobile station, generating a probing response list for the mobile station having transmitted the probing response message, determining whether a cluster list for mobile stations existing in the cluster corresponds to the probing response list, and determining a gateway mobile station according to a result of the determination as to whether the cluster list for mobile stations existing in the cluster corresponds to the probing response list. | 03-28-2013 |
20130094480 | METHOD AND APPARATUS FOR GENERATING CONNECTION IDENTIFIER FOR DEVICE-TO-DEVICE COMMUNICATION - A method and a device for generating a Connection Identifier (CID) for Device-to-Device (D2D) communication are provided. A transmitting device transmits a request signal for requesting direct communication between the transmitting device and a receiving device on a resource unit of a first resource index determined based upon at least one of a device ID of the transmitting device and a device ID of the receiving device during a predetermined first period, receives information about at least one used CID being used by at least one surrounding device from the peripheral device during a second period following the first period, transmits generation information including at least one available CID acquired during the second period on a resource unit of a second resource index being identical to the first resource index during a third period following the second period, and determines at least one CID to be used for D2D communication between the transmitting device and the receiving device based on the generation information. | 04-18-2013 |
20130108000 | METHOD AND APPARATUS FOR PERFORMING SYNCHRONIZATION BETWEEN DEVICES | 05-02-2013 |
20130124937 | METHOD AND APPARATUS FOR TRANSMITTING DATA IN DEVICE-TO-DEVICE SERVICE SYSTEM - A method for transmitting data in a second device that performs a Device-to-Device (D2D) service is provided. The method includes determining cooperative communication, if a value indicating a channel condition between a first device and a third device is less than or equal to a predetermined threshold, overhearing data transmitted from the first device to the third device and overhearing a response signal transmitted from the third device to the first device, to identify a transmission-failed data block of the first device, and if there are data transmission resources left at a predetermined scheduled data transmission time, transmitting the transmission-failed data block of the first device to the third device by piggybacking the transmission-failed data block on transmission data of the second device. | 05-16-2013 |
20130159537 | DEVICE AND METHOD CAPABLE OF SEARCHING FOR AVAILABLE SERVICE - A method capable of searching for a surrounding device based on a desired service is provided. The method includes transmitting a service search request including information regarding a target service to nearby devices; receiving a service search response from the nearby device supporting the target service; analyzing service information of the nearby device supporting the target service, which is included in the service search response; selecting the nearby device supporting the target service based on a result of the analyzed service information; and performing the target service by establishing a session with the selected device. | 06-20-2013 |
20130196638 | TARGET SERVICE APPARATUS AND METHOD BASED ON DEVICE TO DEVICE DIRECT COMMUNICATION - An apparatus and a method for providing a call taxi service based on D2D communication are provided. When a user terminal executes a call taxi service, a call taxi service request is transferred to a terminal from at least one taxi located in a neighboring area of the user terminal, and then the user terminal directly selects one taxi or one taxi is selected through a competition between taxis. As a result, a process of providing the call to the selected taxi. Accordingly, the user has an advantage of using a quick call taxi service without going through a separate call center. | 08-01-2013 |
20130208027 | METHOD OF PROVIDING ADDITIONAL INFORMATION ON EACH OBJECT WITHIN IMAGE BY DIGITAL INFORMATION DISPLAY DEVICE, DIGITAL INFORMATION DISPLAY DEVICE FOR THE SAME, AND VISIBLE LIGHT COMMUNICATION TERMINAL FOR RECEIVING ADDITIONAL INFORMATION - A method and apparatus for providing additional information to a visible light communication terminal through visible light communication by an information display device having a back light unit is provided. The method includes, when the visible light communication terminal is located in one area corresponding to at least one additional information providing area that is disposed within a screen of the information display device, receiving time slot information allocated to the one area through the visible light communication, when the visible light communication terminal is located in remaining areas of the at least one area corresponding to the at least one object, except for the one area, receiving additional information on all objects from the remaining areas through the visible light communication, and acquiring additional information on the object corresponding to the one area from among the additional information on all the objects by using the allocated time slot information. | 08-15-2013 |
20130210359 | METHOD OF UPDATING INTO SERVICE CATEGORY TABLE IN DEVICE AND DEVICE FOR THE SAME - A method for acquiring a service category table required for finding a service includes acquiring information on a latest service category table by identifying version information of a service category table from a broadcasting signal received from adjacent devices during, a process of searching for a device supporting a service desired among devices, and acquiring a service category table of a latest version by establishing a session connection with a device supporting the service category table of the latest version based on the information. By acquiring, the information on the latest service category table, a session connection with only the device providing the desired service is established so that an optimized session connection establishing process can be performed and a total network capacity can be efficiently managed. Also, the latest service category table can be acquired from the session-connected device, and thus a new service can be easily identified. | 08-15-2013 |
20130225082 | APPARATUS AND METHOD FOR WIRELESS POWER TRANSMISSION - A power supply apparatus for wirelessly supplying power to one or more terminals includes a signal transceiver configured to receive a charging state message indicating a charging state from the one or more terminals, a display unit configured to display the charging state of each of the one or more terminals based on the charging state message, an interface unit configured to receive a charging control signal for controlling a charging operation of each of the one or more terminals, a controller configured to control the signal transceiver to transmit a power reception control signal for controlling whether the one or more terminals receive power by analyzing the charging control signal for the one or more terminals and a power supplier configured to wirelessly supply power to the one or more terminals under a control of the controller. | 08-29-2013 |
20130308625 | METHOD AND APPARATUS FOR PERFORMING SYNCHRONIZATION IN DEVICE-TO-DEVICE NETWORK - A method and an apparatus for performing synchronization by a first device in a Device-to-Device (D2D) network are provided. The method includes detecting a synchronization signal from at least one second device during one period, determining a phase adjustment value depending on a number of synchronization signals, which have been detected from the at least one second device during the one period, adjusting a phase value of a first device using the phase adjustment value, and transmitting a synchronization signal if the phase value of the first device reaches a predetermined specific value. | 11-21-2013 |
20130343298 | METHOD AND APPARATUS FOR TRANSMITTING PACKET IN SYSTEM PERFORMING D2D DIRECT COMMUNICATION - A method and an apparatus for transmitting a packet in a system performing a Device to Device (D2D) direct communication are provided. In the method, whether to transmit a small packet is determined. When small packet transmission is determined, at least one peripheral reception device is informed of whether the small packet is transmitted at a scheduling point. | 12-26-2013 |
20140106673 | PROXY COMMUNICATION SYSTEM AND PROXY COMMUNICATION SYSTEM CONTROLLING METHOD IN BAN ENVIRONMENT - Disclosed is a method of controlling a communication system including one or more sensors attached to a user, a wireless communication apparatus, and a coordinator. The method of controlling the communication system includes receiving a request for a proxy authority for a proxy between the one or more sensors and the coordinator from the wireless communication apparatus and assigning the proxy authority to the wireless communication apparatus by the coordinator; generating a user identifier corresponding to the user by the wireless communication apparatus; searching for the one or more sensors attached to the user and establishing pairings with the found one or more sensors by the wireless communication apparatus; making a request for association information for an association between the coordinator and the sensors from the found one or more sensors and receiving the association information by the wireless communication apparatus; making a request for an association proxy for an association between the found one or more sensors and the coordinator from the coordinator and receiving the association proxy in response to the request by the wireless communication apparatus; and establishing an association with the found one or more sensors, making a request for data, and receiving the data in response to the request for the data by the coordinator. | 04-17-2014 |
20140112332 | METHOD AND APPARATUS FOR SYNCHRONIZATION FOR DEVICE-TO-DEVICE COMMUNICATION - A method and an apparatus for synchronization for a device-to-device communication are disclosed. The method includes: instantly adjusting a synchronization phase value according to a time point when a synchronization signal is received, as soon as a device receives the synchronization signal from an adjacent device in an unconnected state; accumulatively storing at least one phase adjustment value according to a time point when at least one synchronization signal is received, whenever the device receives the at least one synchronization signal from at least one adjacent device in a connected state; and adjusting the synchronization phase value according to the stored at least one phase adjustment value when the device transitions from the connected state to the unconnected state. | 04-24-2014 |
20140133593 | METHOD AND APPARATUS FOR SUPPORTING MULTIPLE-ACCESS SIGNAL IN MOBILE COMMUNICATION SYSTEM - In order to generate multiple-access signals, each transmitter transmits information by using all or a part of channel resources. The signal of each transmitter is mapped to an OFDM time-frequency resource space as a trellis modulation path. A mobile communication system maps trellis modulation paths of a plurality of transmitters to the same resource space. In order to effectively detect and distinguish signals of a plurality of transmitters transmitted through the same channel resource space, a receiver uses a message passing method between symbols and a path connection method. The receiver uses a state space expansion method, a backward pre-decoding method, and a successive interference cancellation method to more efficiently reconstruct a discovery signal. | 05-15-2014 |
20140269387 | SCHEDULING METHOD AND APPARATUS IN SYSTEM PERFORMING DEVICE-TO-DEVICE COMMUNICATION - A link scheduling method in a system for performing Device-to-Device (D2D) communication includes periodically collecting information indicating whether to perform a medium access from at least one neighboring link determining at least one link expected to perform a medium access in a corresponding traffic slot among links with a higher priority than the terminal based on the collected information, and determining whether to perform the medium access of the terminal by considering only the at least one link expected to perform the medium access. | 09-18-2014 |
20140270029 | APPARATUS AND METHOD FOR SUPPORTING DEVICE TO DEVICE COMMUNICATION - A method for operating a device in a wireless communication system supporting Device to Device (D2D) communication system includes receiving a reference signal from each of at least one transmitting device, estimating a frequency offset between the reference signals and a comparison reference signal corresponding to the reference signals, and adjusting a transmit frequency of a voltage controlled oscillator of the device using the estimated frequency offset estimation. An apparatus for compensating for a frequency offset of a device in a wireless communication system supporting Device to Device (D2D) communication system includes a frequency offset estimator configured to receive reference signals from each of at least one transmitting device, and estimating a frequency offset between the reference signals and a comparison reference signal corresponding to the reference signals, and a voltage controlled oscillator configured to adjust a transmit frequency using the estimated frequency offset. | 09-18-2014 |
20140285819 | POSITION COMPENSATION DEVICE USING VISIBLE LIGHT COMMUNICATION AND METHOD THEREOF - The present invention relates to a position compensation device using visible light communication and a method thereof. To this end, the present invention receives a visible light signal which includes lighting position information from a lighting device to extract the lighting position information from the received visible light signal, and calculates a compensated position of a position compensation device by using the extracted lighting position information if a request for position compensation exists, thereby providing an exact position of a user indoors. | 09-25-2014 |
20140302791 | APPARATUS AND METHOD FOR DEVICE TO DEVICE COMMUNICATION IN A WIRELESS NETWORK - A method for supporting an application by Device to Device (D2D) communication in a wireless network includes acquiring range control information from an application upon selection of the application installed in the source device, controlling transmission power of a discovery signal for discovering a target device to conduct D2D communication, based on range control information defined for the selected application, and transmitting the discovery signal with the controlled transmission power. An apparatus includes a controller configured to acquire range control information from an application upon selection of the application installed in the source device, and control transmission power of a discovery signal for discovering a target device to conduct D2D communication, for the selected application based on range control information defined for the selected application, and a transmitter configured to transmit the discovery signal with the controlled transmission power. | 10-09-2014 |
20140307657 | DEVICE AND METHOD FOR PERFORMING DEVICE TO DEVICE COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM - A device and a method for performing Device to Device (D2D) communication in a wireless communication system are provided. The method includes transmitting information on a self-frequency band selected from all frequency bands for the D2D communication, to the second mobile station, receiving information on a counterpart-frequency band selected for the D2D communication, from the second mobile station, determining transmission and reception frequency bands to be used for the D2D communication, based on the information on the self-frequency band and the information on the counterpart-frequency band, transmitting data to the second mobile station in the determined transmission frequency band, and receiving data from the second mobile station in the determined reception frequency band. | 10-16-2014 |
20140315494 | PROXY COMMUNICATION SYSTEM IN BAN ENVIRONMENT AND CONTROL METHOD THEREOF - Disclosed is a control method of a communication system including at least one sensor that a user wears, a wireless communication apparatus and a coordinator. The control method of the communication system includes: in the coordinator, receiving a proxy authority request for proxy with respect to the at least one sensor and the coordinator from the wireless communication apparatus, and granting the proxy authority to the wireless communication apparatus; in the wireless communication apparatus, creating a user identifier corresponding to the user; in the wireless communication apparatus, searching for the at least one sensor that the user wears, and forming a pairing with the at least one found sensor; in the wireless communication apparatus, making a request to the at least one found sensor for association information for the association with the coordinator and the sensor, and receiving the association information; in the wireless communication apparatus, making a request to the coordinator for association proxy for an association between the at least one found sensor and the coordinator, and receiving the association proxy in response to the request; and in the coordinator, requesting data by forming an association with the at least one found sensor, and receiving data corresponding to the data request. | 10-23-2014 |
20140316923 | APPARATUS AND METHOD FOR PROVIDING A SPECIFIC SERVICE - The present invention provides a method for providing a service to a device having an interest in a specific service in a device-to-device (D2D) condition. The method includes: searching for a device which enters into an area managed by a device which provides the specific service; and identifying an interest of the searched device in the specific service and inviting the searched device to participate in the specific service. In the method, by selectively connecting a session based on a service interest, an efficient management in view of an entire network capacity is possible and an advantage of reducing a time for session connection is achieved. | 10-23-2014 |
20140321377 | SCHEME FOR D2D COMMUNICATION USING PRIORITY - A communication method of a device to device (D2D) user equipment (UE) in a cellular system supporting a communication frame structure including one or more subframes used for a communication of the D2D UE is provided. The method includes reading an alarm region located within a first subframe, wherein the alarm region indicates whether a communication signal having a priority is included in the first subframe or a second subframe related to the first subframe, and transmitting the communication signal through one of the second subframe and a third subframe related to the second subframe, based on information read from the alarm region. | 10-30-2014 |
20140321438 | METHOD AND APPARATUS FOR SYNCHRONIZATION FOR DEVICE-TO-DEVICE COMMUNICATION IN UNLICENSED FREQUENCY BANDS - A method and an apparatus for synchronization for Device-to-Device (D2D) communication in unlicensed frequency bands are provided. The method includes determining whether a signal is detected during a preset time period within a synchronization period, after transmitting a synchronization signal during the synchronization period for the D2D communication, when it is determined that the D2D communication is to be performed, and starting the time period for the D2D communication and performing the D2D communication during the time period for the D2D communication, when it is determined that the signal is not detected. | 10-30-2014 |
20140324974 | METHOD AND APPARATUS FOR PERFORMING DISTRIBUTED RESOURCE SCHEDULING IN DEVICE-TO-DEVICE COMMUNICATION SYSTEM - A distributed scheduling method in a Device-to-Device (D2D) communication system is provided. The method includes transmitting, to a peer device, first resource information including a link identifier and start position information of resources to be allocated, receiving, from the peer device, second resource information in which at least one of the resource start position information and a resource allocation amount is adjusted based on the first resource information, and determining the resource start position based on the first resource information and second resource information. | 10-30-2014 |
20140328267 | STRUCTURE OF MOBILE TERMINAL OPERATING IN A MOBILE COMMUNICATION SYSTEM SUPPORTING DEVICE TO DEVICE COMMUNICATION AND OPERATION METHOD THEREFOR - A mobile terminal in a mobile communication system supporting device to device (D2D) communication, and a method for operating the mobile terminal are provided. The terminal includes a first radio frequency (RF) chain configured to transmit a mobile communication signal and a second RF chain configured to receive a mobile communication signal, for mobile communication with a base station, a switching unit including a plurality of switches configured to establish transmission and reception paths in the first and second RF chains, and a controller configured to control switching of the switching unit to establish transmission and reception paths of a D2D communication signal for D2D communication by combining a part of the first RF chain with a part of the second RF chain. The combination of the parts of the first and second RF chains is different according to a D2D communication frequency band. | 11-06-2014 |
20140341121 | METHOD AND APPARATUS FOR COMMUNICATION BETWEEN USER EQUIPMENTS IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for direct communication between User Equipments (UEs) in a wireless communication system are provided. A method for communicating with a second UE by a first UE in the wireless communication system includes generating a discovery code used for communicating with the second UE, and transmitting the generated discovery code to one middle layer among a plurality of layers. | 11-20-2014 |
20140341132 | SCHEME FOR DISCOVERY IN A COMMUNICATION NETWORK - A method for performing discovery at a terminal in a communication system is provided. The method includes generating a discovery request message including discovery target information, transmitting the discovery request message to a Proximity Service (ProSe) server that is located in a core network of the communication system and that manages communication of the terminal, and receiving a result of a discovery operation from another entity that performs the discovery operation of the terminal using discovery identification information about the terminal. The other entity is selected based on the discovery target information by the ProSe server. | 11-20-2014 |
20140376444 | MULTICAST SERVICE METHOD AND APPARATUS IN MOBILE COMMUNICATION SYSTEM - A method of providing a multicast service in a mobile communication system includes dividing original multicast data into a plurality of multicast data to generate a plurality of multicast streams having different data rates and transmitting a first transmission frame including the plurality of multicast streams to a plurality of user equipments; receiving a report on a data rate corresponding to an unreceived multicast stream among the plurality of multicast streams from one or more user equipments among the plurality of user equipments; and transmitting a second transmission frame including the unreceived multicast stream to the plurality of user equipments including the one or more user equipments. | 12-25-2014 |
20140376458 | METHOD AND APPARATUS FOR ALLOCATING RESOURCES FOR D2D COMMUNICATION - A method for allocating resources for Device-to-Device (D2D) communication in a transmitting terminal is provided. The method includes receiving broadcast resource allocation information for the D2D communication from a Base Station (BS), and measuring a channel quality of a downlink signal received from the BS and, if the measured channel quality is smaller than a predetermined threshold, conducting the D2D communication using the resource allocation information. | 12-25-2014 |
20150030335 | APPARATUS FOR RECEIVING AND TRANSMITTING OPTICAL INFORMATION - An apparatus for transmitting information using a visible light includes at least three light emitting devices, each being installed based on a predetermined interval and direction, and a data transmitting unit to transmit data by controlling the at least three light emitting devices. | 01-29-2015 |
20150230282 | METHOD OF UPDATING INTO SERVICE CATEGORY TABLE IN DEVICE AND DEVICE FOR THE SAME - A method for acquiring a service category table required for finding a service includes acquiring information on a latest service category table by identifying version information of a service category table from a broadcasting signal received from adjacent devices during a process of searching for a device supporting a service desired among devices, and acquiring a service category table of a latest version by establishing a session connection with a device supporting the service category table of the latest version based on the information. By acquiring the information on the latest service category table, a session connection with only the device providing the desired service is established so that an optimized session connection establishing process can be performed and a total network capacity can be efficiently managed. Also, the latest service category table can be acquired from the session-connected device, and thus a new service can be easily identified. | 08-13-2015 |
20150264695 | METHOD AND APPARATUS FOR CONTROLLING INTERFERENCE IN DEVICE-TO-DEVICE COMMUNICATION - Disclosed is a method for controlling interference for D2D communication. The method includes: identifying whether a position of a first user device belongs to a first area that satisfies a predetermined criterion; and if the position of the first user device is identified to belong to the first area, determining some resources constituting dedicated resources of the first area, among available resources of a signal for discovering a counterpart user device of D2D communication by the first user device, as resources of the signal. | 09-17-2015 |
20150271771 | METHOD AND APPARATUS FOR SUPPORTING SYNCHRONIZATION IN D2D COMMUNICATION - Disclosed is a method for supporting synchronization of a user equipment (UE) for D2D communication. The method includes: first scanning for checking a synchronization signal transmitted from a nearby UE; establishing the UE as a synchronization-transmitting UE, based on a result of the first scanning; transmitting a synchronization channel including timer value information indicating scanning time at which a scanning starts; and second scanning based on the timer value information. | 09-24-2015 |
20150296365 | APPARATUS AND METHOD FOR ALIGNING DISCOVERY CHANNEL INTERVALS AMONG CELLS IN CELLULAR COMMUNICATION SYSTEM - A method for aligning discovery channel intervals of a serving cell and a neighbor cell in a cellular communication system is provided. The method includes selecting at least one user equipment (UE), by a serving evolved node b (eNB) managing the serving cell, wherein the UE is located in the serving cell and operates in a radio resource control (RRC) connected mode, transmitting, to the at least one UE, a request message requesting information related to a discovery channel of the neighbor cell, receiving, from the at least one UE, at least one of an identifier (ID) of the neighbor cell, a temporally adjusted value obtained by shifting the discovery channel with respect to a frame reference time of the neighbor cell, and a network time difference (NTD) between the serving cell and the neighbor cell, and aligning the discovery channel interval of the serving cell to the discovery channel interval of the neighbor cell based on the at least one of the ID of the neighbor cell, the temporally adjusted value, and the NTD. | 10-15-2015 |
20150327191 | METHOD AND APPARATUS FOR SYNCHRONIZATION IN DEVICE TO DEVICE COMMUNICATION SYSTEM - A method for performing synchronization by a device in a device to device (D2D) communication system is provided. The method includes transmitting a first synchronization signal, and transmitting offset information indicating a time difference between a synchronization reference time of the first synchronization signal and a transmission time of the first synchronization signal. | 11-12-2015 |
20150327193 | APPARATUS AND METHOD FOR ACQUIRING D2D SYNCHRONIZATION INFORMATION - The present disclosure relates to a pre-5 | 11-12-2015 |
20150327204 | SYNCHRONIZATION METHOD AND APPARATUS FOR D2D COMMUNICATION - A synchronization method and an apparatus for Device-to-Device (D2D) communication in a User Equipment (UE) are provided. The method includes comparing a reception power of a signal received from an evolved Node B (eNB) with a first reference power, if the reception power is less than the first reference power, generating and transmitting a synchronization signal for D2D communication by operating as a synchronization reference UE, comparing the reception power of a signal received from the eNB with a second reference power, and if the reception power is greater than or equal to the first reference power and less than the second reference power, relaying a synchronization signal received from the eNB by operating as a synchronization relaying UE. | 11-12-2015 |
20150327315 | SCHEMES RELATED TO RESOURCE ALLOCATION, DISCOVERY AND SIGNALING IN D2D SYSTEMS - The present disclosure relates to a pre-5 | 11-12-2015 |
20150334721 | METHOD AND APPARATUS FOR AVOIDING RESOURCE COLLISION IN MOBILE COMMUNICATION SYSTEM - Different resources are selected based on QoS, emergency class, location, and SA count. A method for avoiding resource collision by a first User Equipment (UE) in a mobile communication system is provided. The method includes listening to Scheduling Assign (SA) information of a second UE; and selecting different resources between UEs based on the SA information. | 11-19-2015 |