Patent application number | Description | Published |
20120163314 | METHOD AND APPARATUS OF SENDING FRAMES IN COGNITIVE RADIO SYSTEM - The present invention provides a method of a node sending frames in a Cognitive Radio (CR) system. The method of the node includes being allocated a first channel as an operating channel where the node will be operated, sensing one or more candidate channels available as the operating channel of the node, determining whether to extend a frequency bandwidth of the operating channel, in addition to the first channel, based on a result of the sense for the one or more candidate channels, and sending the frames using a frequency bandwidth extended by adding a second channel, newly determined as the operating channel, to the first channel according to the determination. | 06-28-2012 |
20120163367 | APPARATUS AND METHOD FOR ACQUIRING SYNCHRONIZATION IN WIRELESS COMMUNICATION SYSTEM - An apparatus for acquiring synchronization using a signal having repetition patterns is provided. The apparatus includes: a signal reception unit for receiving signal streams transmitted in the repetition patterns, a synchronization point tracking unit for calculating, during one period in which the signal streams are repeated in the repetition patterns, an add-sum of the signal streams, a sub-sum of the signal streams and an add-sub-sum which is a difference between the add-sum and the sub-sum, and for tracking an estimated synchronization point by comparing the sub-sum and the add-sub-sum, and a synchronization acquisition unit for acquiring, based on the estimated synchronization point, a synchronization point by searching for a point where the repetition of some of the signal streams is ended or a point where new signal streams having different characteristics from the signal streams are started. | 06-28-2012 |
20120163505 | METHOD AND APPARATUS OF SIGNAL DETECTION IN WIRELESS LOCAL AREA NETWORK SYSTEM - Disclosed is a method and receiver for detecting a wireless signal in a wireless local area network (WLAN) system. The receiver includes a radio frequency (RF) unit which receives a wireless signal; an analog/digital converter (ADC) which converts the wireless signal into a digital signal; a fast Fourier transform (FFT) unit which applies FFT to the digital signal; a multiple inputs and multiple outputs (MIMO) detector which performs channel compensation for the FFT applying result; a constellation-demapping unit which constellation-demaps with regard to the channel compensation result; a decoder which decodes the constellation-demapping result; and a high throughput (HT) detector which determines whether the wireless signal is a signal modulated with quadrature binary phase shift keying (Q-BPSK) constellation obtained by rotating binary phase shift keying (BPSK) constellation at an angle of 90 degrees on the basis of the FFT applying result. | 06-28-2012 |
20120164957 | APPARATUS AND METHOD FOR ACQUIRING SYNCHRONIZATION IN WIRELESS COMMUNICATION SYSTEM - An apparatus for acquiring synchronization in a multi-channel system includes a signal reception unit for receiving information about repetition patterns of signal streams for each channel and receiving the signal streams and data from the channel, an estimated synchronization point tracking unit for determining a estimated synchronization point for the channel from a point of time where the repetition patterns are ended by tracking a period where the signal streams are repeated based on the repetition patterns, and a synchronization acquisition unit for searching, based on the estimated synchronization point related to the channel, for a point where the repetition of the signal stream is ended or a point where new signal streams are started and acquiring a synchronization point based on the point. | 06-28-2012 |
20120177144 | METHOD AND APPARATUS FOR TRANSMITTING SYMBOL REPEATEDLY IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for a transmitter to transmit data in a wireless communication system are provided. This method includes: generating a first signal field including at least one symbol; generating a second signal field configured by repeating at least one symbol of the first signal field; and transmitting a frame including the first signal field, the second signal field, and a data field and a first symbol of the second signal field is modulated through binary phase shift keying (BPSK) and symbols from a second symbol of the second signal field are modulated through Q-BPSK. According to the present invention, a service filed can be extended while maintaining compatibility with a wireless communication system in the related art by transmitting a frame using symbol repetition. | 07-12-2012 |
20120182926 | METHOD AND APPARATUS FOR TRANSMITTING RELAY FRAME IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting a relay frame in a relay end are provided. The method includes: receiving a relay request frame requesting data transmission to a receive end from a transmit end; transmitting a relay response frame including information on data to be relayed to each of the transmit end and the receive end; receiving the data from the transmit end; and generating a relay frame including the data to transmit the relay frame to the receive end. According to the present invention, the data is transmitted to the receive end positioned outside a transmission coverage of the transmit end, such that a wireless LAN service coverage may be expanded, and an adjacent terminal connected to the receive end is used as the relay end, such that the transmit end that may not be connected directly to the receive end may communicate with the receive end. | 07-19-2012 |
20120207140 | METHOD FOR GENERATING AND TRANSMITTING FRAME IN A WIRELESS LOCAL AREA NETWORK AND APPARATUS FOR SUPPORTING THE SAME - A channel sounding method in a wireless local area network (WLAN) system is provided. The method, performed by a transmitter, includes transmitting a null data packet announcement (NDPA) frame to a receiver to initiate a channel sounding procedure; transmitting a null data packet (NDP) to the receiver and receiving a feedback frame. The feedback frame includes a plurality of segment frames and a channel feedback report. The channel feedback report is split into a plurality of feedback segments. Each of the plurality of feedback segments is respectively included in each of the plurality of segment frames. The each of the plurality of segment frames includes a first-segment subfield indicating whether the each of the plurality of feedback segment included is a first segment and a remaining-segment subfield indicating the number of remaining feedback segments. | 08-16-2012 |
20120294170 | METHOD FOR TRANSMITTING FRAME WITH INTERFERENCE AVOIDANCE IN WIRELESS LOCAL AREA NETWORK SYSTEM AND APPRATUS FOR THE SAME - A method for transmitting a frame in a wireless local area network system is provided. The method includes obtaining, by a station (STA), interference channel information of an interference channel between the STA and neighbor STA that is a frame transmission object of an access point (AP); determining, by the STA, a transmitting beam vector based on the interference channel information; and transmitting, by the STA, a data frame to a transmission target STA using a multiple input multiple output (MIMO) transmission based on the transmitting beam vector. | 11-22-2012 |
20160087750 | METHOD AND APPARATUS FOR TRANSMITTING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) SIGNAL IN OPTICAL NETWORK - A method for transmitting an orthogonal frequency division multiplexing (OFDM) signal in an optical network and apparatus therefor are provided. The method includes: converting a media access control (MAC) frame into an OFDM frame that contains a physical (PHY) level preamble, using the MAC frame which is transmitted from a MAC layer in a passive optical network (PON) to a PHY layer in an OFDM-PON; and transmitting the generated OFDM frame. | 03-24-2016 |
Patent application number | Description | Published |
20120143939 | MOBILE NODE AND METHOD FOR MAINTAINING SESSION USING LOGICAL INTERFACE - A mobile node and method suitable to allocate a single Internet protocol (IP) address to a physically independent interface and to provide a logical interface that connects between an application layer and the physical interface are provided. The mobile node includes an upper layer processing unit configured to perform a packet service; a physical interface unit configured to comprise multiple physical interfaces for access to multiple wireless networks; and a logical interface unit configured to allocate a single home IP address to the multiple physical interfaces and enable the upper layer processing unit to process a packet using the single home IP address, and to process packets belonging to the same session to be transmitted and received through the same physical interface from among the multiple physical interfaces. | 06-07-2012 |
20130212241 | SYSTEM AND METHOD FOR OPERATING NETWORK BASED ON NETWORK VIRTUALIZATION - A virtual network operating apparatus and method are provided. The virtual network operating method includes configuring, by a virtual network operating apparatus, a plurality of virtual networks identified by domain names, setting, by the virtual network operating apparatus, representative virtual routers representing each of the virtual networks for each virtual network, setting, by the virtual network operating apparatus, representative routing information including an IP address of each of the representative virtual routers in each virtual router included in the virtual networks, and transmitting, by each virtual router, a packet using the set representative routing information. | 08-15-2013 |
Patent application number | Description | Published |
20130297817 | METHOD AND APPARATUS FOR TRANSMITTING MEDIA CONTENT VIA A SINGLE PORT OR MULTIPLE PORTS - Disclosed is a method for generating a substream ID usable in transmitting media content based on a plurality of scenarios, and allocating the substream ID for transmitting media. A method for allocating an ID for transmitting media content comprises: a step of generating a substream ID containing information required for transmitting the media content based on a certain scenario from among a plurality of scenarios; and a step of transmitting the substream ID to a client. According to the present invention, a header for the transmission of media may be simplified, media content may be transmitted regardless of the number of ports, number of servers, and presence/absence of additional information, an application to be introduced in the future may be used, and backward compatibility for an existing media content transmission system may be provided. | 11-07-2013 |
20140119440 | METHOD FOR CODING AND DECODING SCALABLE VIDEO AND APPARATUS USING SAME - The present invention relates to a method and an apparatus for interlayer intra-prediction, and the method for interlayer intra-prediction, according to the present invention, comprises the steps of: deciding whether to apply an interlayer prediction to an enhancement layer; and performing a prediction on a current block of the enhancement layer based on reference information that is generalized and generated from a reference picture, which is decoded, of a reference layer, when the interlayer prediction is applied. | 05-01-2014 |
20140119441 | METHOD FOR CODING AND DECODING SCALABLE VIDEO AND APPARATUS USING SAME - The present invention relates to a method and an apparatus for interlayer prediction, and the method for interlayer prediction, according to the present invention, comprises the steps of: deciding whether to apply an interlayer prediction to an enhancement layer; and performing a prediction on a current block of the enhancement layer based on reference information that is generalized and generated from a reference picture, which is decoded, of a reference layer, when the interlayer prediction is applied, wherein the reference layer information can be encoding information of a reference block, which corresponds to a current block of the enhancement layer, from the reference layer, and residual information. | 05-01-2014 |
20140177711 | VIDEO ENCODING AND DECODING METHOD AND APPARATUS USING THE SAME - Disclosed is technology associated with video encoding and decoding having a structure including one or more layers (quality, spatial, and view) and technology associated with a method that predicts an higher layer signal by using one or more reference layers in encoding and decoding an higher layer. In more detail, an interlayer prediction is capable of being performed by considering a characteristic of each layer by separating a spatial and quality reference layer list constituted by spatial and quality layers to be referred at the same view as a target layer and a view reference layer list constituted by the same spatial and quality layers as a target layer in encoding and decoding encoding and decoding pictures of an higher layer in encoding and decoding encoded and decoded pictures of the higher layer to improve encoding and decoding efficiency. | 06-26-2014 |
20140184741 | VIDEO ENCODING AND DECODING METHOD AND APPARATUS USING THE SAME - The present invention is related to a method for moving the position of a base view from an arbitrary GOP (Group Of Pictures) start position to implement an efficient encoding structure in multi-view video encoding. The existing multi-view video encoding method exhibits low encoding efficiency when correlation between the base view and a dependent view is low, since the base view is assumed to be fixed. Moreover, in case the view in a live broadcasting program desired by a producer changes from the base view to another, the user has to consume more bit streams and decoder complexity than those consumed when decoding is performed with respect to the base view. Therefore, to alleviate the drawbacks of the existing multi-view video encoding method, the present invention provides a method for designing syntax elements by which the base view can be moved, thereby supporting an efficient encoding structure. | 07-03-2014 |
20140185671 | VIDEO ENCODING AND DECODING METHOD AND APPARATUS USING THE SAME - Disclosed is a video decoding method supporting a plurality of layers including: decoding a first layer which is referred by a target block of a second layer to be decoded; determining a size of the target block of the second layer which uses information on the first layer; and performing prediction for the target block by using the information on the first layer according to a determined result. | 07-03-2014 |
20140185673 | METHOD AND APPARATUS FOR IMAGE ENCODING/DECODING - This document discloses a method and apparatus for image encoding/decoding which support multiple layers. The method for image decoding comprises analyzing a video parameter set (VPS) extension for layer dependency on a current layer, analyzing slices for layer dependency on a current slice by determining whether not to apply layer dependency to the current slice or to apply new layer dependency to the current slice, the new layer dependency determining within a range of layer dependency analyzed from the VPS extension, and constructing a reference picture list about the current layer based on at least one of layer dependency analyzed from the VPS extension and layer dependency analyzed from the slice. | 07-03-2014 |
Patent application number | Description | Published |
20120144487 | ROUTING APPARATUS AND METHOD FOR DETECTING SERVER ATTACK AND NETWORK USING THE SAME - Routing apparatus and method for detecting a server attack are disclosed. The routing apparatus includes: a reception unit configured to receive a packet transmitted in a network; a transmission unit configured to transmit the packet along a transmission path; a memory unit configured to store data and/or information required for an operation; and a controller configured to set the transmission path of the packet in the network and perform packet switching along the set transmission path, wherein the reception unit receives server state information from servers at every certain time, the memory unit stores the received server state information, and the controller calculates a change in the state of the servers based on the received server state information, and determines that a server is attacked when a change in the state of the server is greater than a certain threshold value. | 06-07-2012 |
20120151583 | DDOS ATTACK DETECTION AND DEFENSE APPARATUS AND METHOD - A Distributed Denial of Service (DDoS) attack detection and defense apparatus and method are provided. The Distributed Denial of Service (DDoS) attack detection and defense apparatus includes: a flow information collection unit to collect, from one or more input packets with an IP address of an attack target system as a destination IP address, flow information including source IP addresses of the input packets and packet counts of one or more flows that are classified for each of the source IP addresses and each of different protocol types; an inspection unit to calculate packets per second (PPS) values of the flows based on the packet counts; and a response unit to determine a DDoS attack response method for each of the flows based on the PPS value and the protocol type of a corresponding flow and to process the corresponding flow using the determined DDoS attack response method | 06-14-2012 |
20120151593 | DISTRIBUTED DENIAL OF SERVICE ATTACK DETECTION APPARATUS AND METHOD, AND DISTRIBUTED DENIAL OF SERVICE ATTACK DETECTION AND PREVENTION APPARATUS FOR REDUCING FALSE-POSITIVE - Provided is a DDoS attack detection apparatus including an information collecting unit to collect DDoS detection information including rate information about traffic change, variation of a first type flow and a Packet Per Second (PPS) for a second type flow, in which the rate information about traffic change is obtained using packet count of packets input per a unit time, flow count of flows input per the unit time and the byte count of bytes input per the unit time; and a testing unit to calculate a probability of occurrence of the DDoS attack by use of a first probability determined by the rate information about traffic change, a second probability determined by the variation of the first type flow and a third probability determined by the PPS for the second type flow and detect occurrence of the DDoS attack based on the probability of occurrence of the DDoS attack. | 06-14-2012 |
Patent application number | Description | Published |
20100150553 | METHOD AND APPARATUS FOR GENERATING OPTICAL SHORT PULSE FOR QUANTUM CRYPTOGRAPHY COMMUNICATION - A method and apparatus for generating an optical short pulse for quantum cryptography communication is provided. The apparatus is incorporated as a module in an electronic integrated circuit chip, such as a field programmable gate array (FPGA) chip which performs quantum key distribution post-processing and open channel optical signal processing of a quantum cryptography system. The apparatus generates an electrical short pulse and converts the electrical short pulse into an optical short pulse, and it is possible to manufacture a compact apparatus for generating an optical short pulse for quantum cryptography communication. | 06-17-2010 |
20100150568 | OPTICAL TRANSCEIVER OPTIMIZING TRANSFER CHARACTERISTIC OF OPTICAL INTERFEROMETER AND METHOD OF OPTIMIZING TRANSFER CHARACTERISTIC OF OPTICAL INTERFEROMETER OF OPTICAL TRANSCEIVER - An optical transceiver for optimizing transfer characteristic of an optical interferometer and a method of optimizing transfer characteristic of an optical interferometer of an optical transceiver are provided. It is possible to improve the transmission performance of the optical transceiver by optimizing the transfer characteristic of the optical interferometer included in an optical receiver of the optical transceiver which transmits and receives an optical signal in a phase modulation scheme. | 06-17-2010 |
20110026123 | WAVELENGTH-DIVISION APPARATUS AND WAVELENGTH COMBINING APPARATUS - A wavelength-division apparatus and a wavelength combining apparatus are provided. Each of the wavelength-division apparatus and the wavelength combining apparatus includes a transparent block having one surface which is coated with an anti-reflective coating layer and the other surface which is coated with a partial transmitting coating layer. Each of the anti-reflective coating layer and the partial transmitting coating layer is coupled to a plurality of wavelength-selective filters that separate optical signals of different wavelengths through different paths other than a transmission path or a receiving path. Thus, the optical signals of the respective wavelengths output through the different paths can be used for various purposes such as monitoring the signal intensity and/or the signal quality. | 02-03-2011 |
20110058771 | MULTI-WAVELENGTH OPTICAL TRANSMITTING AND RECEIVING MODULES - A multi-wavelength optical transmitting module includes a housing, an optical output block, an optical transmitting block, and an optical multiplexer (MUX) block. The housing has a first coupling hole and a second coupling hole respectively formed in opposite surfaces thereof. The optical output block is coupled to the first coupling hole of the housing, is connected to an optical signal connector, and includes a first lens. The optical transmitting block is coupled to the second coupling hole of the housing and is connected to an electrical signal connector. In addition, the optical transmitting block includes a plurality of transmitting devices which respectively output light having different wavelengths and are arranged parallel to the optical output block, and a plurality of second lenses which are arranged on a light output side of the transmitting devices to correspond respectively to the transmitting devices. The optical multiplexer (MUX) block is disposed within the housing, multiplexes optical signals of multiple wavelengths, which were output from the transmitting devices and passed through the second is lenses, and transmits the multiplexed optical signals to the optical output block. | 03-10-2011 |
20120163751 | REFLECTION TYPE OPTICAL DELAY INTERFEROMETER APPARATUS BASED ON PLANAR WAVEGUIDE - A reflective type optical delay interferometer includes a coupler to divide an optical signal into two optical signals; a first optical waveguide connected to the coupler, to have a first optical delay path for transmitting a first optical signal which is one of the two optical signals; a second optical waveguide connected to the coupler, to transmit a second optical signal which is the other of the two optical signals and to have an optical delay path asymmetrical to the first optical delay path; and first and second polarization rotation reflection devices respectively connected to the first and second optical waveguides, wherein the first polarization rotation reflection device rotates polarizations of the first optical signal and the reflected first optical signal and the second polarization rotation reflection device rotates polarizations of the second optical signal and the reflected second optical signal. | 06-28-2012 |
20120207437 | OPTICAL MODULE - An optical module includes a stem, an optical element, data signal lead pins, a printed circuit board, and a post portion. The optical element is mounted on one surface of the stem. The data signal lead pins are connected to the optical element, and protrudes through the other surface of the stem. The printed circuit board has one surface on which data signal transmission lines for contact with the data signal lead pins are formed and the other surface on a part of which a stiffener is formed to protrude. The post portion protrudes from the other surface of the stem, supports the printed circuit board while in close contact with the stiffener such that the data signal lead pins can contact the data signal transmission lines while being disposed linearly above the data signal transmission lines, and includes a coupling portion to be coupled with the stiffener. | 08-16-2012 |
20140099123 | FLEXIBLE PRINTED CIRCUIT BOARD AND OPTICAL COMMUNICATION MODULE INCLUDING THE SAME - A flexible printed circuit board (FPCB) includes at least one signal pad part disposed at each of a top and bottom of a flexible substrate base and configured to include an upper signal pad and a lower signal pad and a through hole formed at a portion corresponding to a signal via, a signal line disposed at the top of the substrate base, and extending from the upper signal pad along a length direction of the substrate base, an upper ground pad disposed at the top of the substrate base to be separated from the upper signal pad and the signal line near the upper signal pad, and a lower ground pad disposed at the bottom of the substrate base to be separated from the lower signal pad near the lower signal pad, and connected to the upper ground pad through a ground via. | 04-10-2014 |
20140133870 | OPTICAL TRANSMITTER FOR GENERATING MULTI-LEVEL OPTICAL SIGNAL AND METHOD THEREFOR - An optical transmitter for generating a multi-level optical signal and a method therefore are provided. The optical transmitter includes an optical power splitter configured to split one optical signal into N paths, N optical intensity modulators configured to modulate the split optical signals into binary optical signals, and an optical power combiner configured to combine the intensity-modulated optical signals to generate a multi-level optical signal having 2 | 05-15-2014 |
20140153873 | OPTICAL COUPLING MODULE FOR SILICON PHOTONICS CHIP - An optical coupling module for a silicon photonics chip in which a grating is formed on an optical waveguide, and a material having an intermediate refractive index between refractive indexes of a core and a cladding for side surface optical coupling of the silicon photonics chip is provided. The optical coupling module which is optically coupled with an internal/external optical fiber comprises a core transmitting light, and a cladding covering the core and holding the light in the core through total internal reflection, wherein a grating is formed at one end of the core, and a refractive element is formed between the one end of the core and the cladding, has an intermediate refractive index between the refractive indexes of the core and the cladding, and is optically coupled with the internal/external optical fiber. | 06-05-2014 |
20140183344 | HYBRID OPTICAL COUPLING MODULE AND MANUFACTURING METHOD THEREOF - Provided are a hybrid optical coupling module and a manufacturing method thereof. | 07-03-2014 |
20140301736 | DIRECTLY MODULATED MULTI-LEVEL OPTICAL SIGNAL GENERATOR AND METHOD THEREOF - A directly modulated multi-level optical signal generator and a method thereof are provided. The multi-level optical signal generator includes N number of direct modulation lasers (DMLs) configured to directly modulate source light into a 2-level optical signal, and an optical power combiner configured to combine N number of 2-level optical signals directly modulated by the respective DMLs to generate a 2 | 10-09-2014 |
Patent application number | Description | Published |
20130016282 | METHOD OF PROVIDING TIMING INFORMATION FOR SYNCHRONIZING MMT PACKET STREAM IN MMT HYBRID DELIVERY SERVICE AND METHOD OF SYNCHRONIZING MMT PACKET STREAM IN MMT HYBRID DELIVERY SERVICEAANM KIM; Sung HeiAACI Daejeon-siAACO KRAAGP KIM; Sung Hei Daejeon-si KRAANM Seo; Kwang DeokAACI Wonju-siAACO KRAAGP Seo; Kwang Deok Wonju-si KRAANM Jung; Tae JunAACI Wonju-siAACO KRAAGP Jung; Tae Jun Wonju-si KRAANM Lee; Chang KyuAACI Daejeon-siAACO KRAAGP Lee; Chang Kyu Daejeon-si KRAANM Kang; Shin GakAACI Daejeon-siAACO KRAAGP Kang; Shin Gak Daejeon-si KR - A method of providing timing information for synchronizing packet streams delivered from a first server and a second server, respectively, that are different from each other under hybrid delivery service environment is provided. The first server delivers a first media object and the second server delivers a second media object. The timing information for synchronizing a second packet including the second media object and a first packet including the first media object is generated in the second server. The timing information and the second packet including the second media object are provided from the second server to the client. | 01-17-2013 |
20130030940 | BUSINESS MODEL FOR PROVIDING PORTAL SERVICE BASED SERVICE OVERLAY NETWORK - A service overlay network (SON) service providing apparatus and method are provided. According to an embodiment of the present invention, the SON service providing apparatus is entrusted with element services from an element service provider, sells the entrusted element services to a composite service developer so as to enable the composite service developer to use the element services. In addition, the SON service providing apparatus receives a composite service developed by the composite service developer, and provides the composite service in response to a request from a service user. | 01-31-2013 |
20130173826 | METHOD OF PROVIDING TIMING INFORMATION USING MMT SIGNALING LAYER SIGNALING FOR SYNCHRONIZING MMT PACKET STREAMS IN MMT HYBRID DELIVERY SERVICE AND METHOD OF SYNCHRONIZING MMT PACKET STREAMS IN MMT HYBRID DELIVERY SERVICE - A method for providing timing information for synchronizing between packet streams each transported from a first server and a second server under environment of a hybrid delivery service is provided. When the first server transports a first media entity and the second server transports a second media entity, timing information for synchronizing a second packet including a second media entity with a first packet including a first media entity in the second server is generated in response to a transport request for the second media entity from a client and the timing information and the second packet including the second media entity is provided to the client from the second server. | 07-04-2013 |
20130322442 | METHOD AND APPARATUS FOR TRANSMITTING PARAMETERS TO MULTICAST AGENT IN RELAYED MULTICAST NETWORK - Provided are method and apparatus for transmitting session-related parameters required for controlling session maintenance to a multicast agent in a relayed multicast network. The session manager in the relayed multicast network generates control data containing at least one of a T_PPROBE field, an N_PPROBE field, a T_HB field, a N_HB field, a T_HSOLICIT field, an N_HSOLICIT field, a T_HANNOUNCE field, a N_HANNOUNCE field, a T_RELAY field, an N_RELAY field, and a T_LEAVE field, and transmits the generated control data to the multicast agent. Accordingly, relayed multicast service can be provided for each session by setting session-related parameters for each session in a relayed multicast network and transmitting them to a multicast agent. | 12-05-2013 |
Patent application number | Description | Published |
20090288800 | Cooling and Heating Cabinet Device of Rear Seat for Vehicles Using Thermoelectric Element - The present invention relates to a cooling and heating cabinet device of a rear seat side for a vehicle using a thermoelectric module that is mounted between rear seats of a vehicle, having cooling and heating functions and further having an arm-resting function irrespective of its activation as the cooling and heating device, and that makes the exhaust fan activated by the control of the controller of the air conditioning system, thereby achieving the air-refreshing function as well as the cooling or heating mode function of the cooling and heating cabinet. | 11-26-2009 |
20100043470 | DUAL ZONE TYPE AIR CONDITIONER FOR VEHICLES AND METHOD OF CONTROLLING THE SAME - The present invention relates to a dual zone type air conditioner for vehicles, which includes two air volume controlling doors mounted on an air inflow port of an air-conditioning case where the cross section of an air passageway is uniform and a flow of air is relatively uniform, a sealing wall mounted between the air volume controlling doors, and a controlling part mounted for selecting a more air volume side as a level of a blower when an air volume set by a driver and an air volume set by a passenger are different from each other and controlling the air volume controlling doors to supply the set air volumes to a driver's seat side and a passenger's seat side. | 02-25-2010 |
20120227431 | HEAT PUMP SYSTEM FOR VEHICLE - A heat pump system including a water-cooled type heat exchanger, which is a heat supply means, mounted on a first bypass line bypassing a second indoor heat exchanger to collect waste heat of vehicle electric devices to thereby enhance a heating efficiency of the heat pump system. The heat pump system for a vehicle includes: a branch line for connecting a refrigerant circulation line of the second indoor heat exchanger and the first bypass line with each other; a second bypass line, which bypasses an outdoor heat exchanger; and a control part that controls a flow of the indoor air to be introduced into an air-conditioning case, whereby the heat pump system can minimize influences of the outdoor air of low temperature even when the outdoor temperature is below zero, enhance the operation and the heating performance of the heat pump system by collecting waste heat of the vehicle electric devices and heat sources of the indoor air, and increase the mileage of the vehicle by minimizing operation of an electric heater. | 09-13-2012 |
20130227973 | HEAT PUMP SYSTEM FOR VEHICLE AND METHOD OF CONTROLLING THE SAME - Disclosed therein are a heat pump system for a vehicle and a method of controlling the heat pump system, which determines that frosting begins on an exterior heat exchanger and carries out a defrosting control if a difference value between outdoor temperature and refrigerant temperature of an outlet side of the exterior heat exchanger is above a frosting decision temperature in a heat pump mode, thereby increasing frost-prevention and defrosting effects and enhancing heating performance and stability of the system because the system recognizes the beginning of frosting on the exterior heat exchanger at a proper time so as to carry out the defrosting control. | 09-05-2013 |
20130228324 | HEAT PUMP SYSTEM FOR VEHICLE AND METHOD OF CONTROLLING THE SAME - Disclosed therein are a heat pump system for a vehicle and a method of controlling the heat pump system, which variably controls only a compressor if the number of revolutions of the compressor is less than the upper limit of the number of the maximum revolutions of the compressor and operates an electric heater only when the number of revolutions of the compressor reaches the upper limit of the number of the maximum revolutions of the compressor in order to satisfy a target discharge temperature in a heat pump mode, thereby preventing that convergence of an air discharge temperature of the interior of the vehicle is deteriorated or becomes unstable when the compressor and the electric heater are variably controlled at the same time in order to satisfy the target discharge temperature. | 09-05-2013 |
20160033193 | HEAT PUMP SYSTEM FOR VEHICLE AND METHOD OF CONTROLLING THE SAME - Disclosed therein are a heat pump system for a vehicle and a method of controlling the heat pump system, which determines that frosting begins on an exterior heat exchanger and carries out a defrosting control if a difference value between outdoor temperature and refrigerant temperature of an outlet side of the exterior heat exchanger is above a frosting decision temperature in a heat pump mode, thereby increasing frost-prevention and defrosting effects and enhancing heating performance and stability of the system because the system recognizes the beginning of frosting on the exterior heat exchanger at a proper time so as to carry out the defrosting control. | 02-04-2016 |