Patent application number | Description | Published |
20090147788 | METHOD AND APPARATUS OF DOWNSTREAM SERVICE FLOWS CLASSIFICATION FOR HEADEND CABLE MODEM - A method and apparatus of classifying downstream service flows for a cable modem is provided. A method of classifying downstream service flows, the method including: classifying a service flow based on a Quality of Service (QoS) using a destination address of an inputted packet; composing an internal header including corresponding service flow information based on the classifying of the service flow; and adding the internal header to the inputted packet. | 06-11-2009 |
20090150955 | APPARATUS AND METHOD FOR SWITCH OPERATION OF DOWNSTREAM TERMINAL PLATFORM FOR IP DATA TRANSMISSION USING LEGACY TRANSMISSION SYSTEM IN HFC NETWORK - A method and apparatus for a switch operation of a downstream terminal platform for Internet Protocol (IP) data transmission using a legacy transmission system in a Hybrid Fiber Coax (HFC) network is provided. The downstream terminal platform includes: a Radio Frequency (RF) transmitter to distribute and combine a signal transceived by an HFC network; a broadband downstream receiver to process a broadband signal received by the RF transmitter; a cable modem (CM) to process data received or transmitted by the RF transmitter; an IP layer switch to transmit data to a corresponding Customer Premises Equipment (CPE), the data being received from the broadband downstream receiver to the CPE, or to enable user data received from the CPE to be transmitted to a headend using the CM; and a subscriber controller to control the downstream terminal platform. | 06-11-2009 |
20100157920 | APPARATUS AND METHOD OF CHANNEL BANDWIDTH ALLOCATION - Provided is an apparatus for a channel bandwidth allocation, the apparatus including: an information sorting unit to receive bandwidth allocation request information, to sort the received bandwidth allocation request information according to a priority, and to transfer any one of the sorted bandwidth allocation request information to a minislot allocation unit; and a calculation unit to apply a multiplier to a number of bytes, and to transfer, to the minislot allocation unit, the bandwidth allocation request information where a number of requested bytes is calculated, when the bandwidth allocation request information is byte-based bandwidth allocation request information, wherein the minislot allocation unit allocates a minislot based on the bandwidth allocation request information and predetermined setting information. | 06-24-2010 |
20100158036 | METHOD AND APPARATUS OF RECEIVING BURST DATA USING MULTIPLE UPSTREAM CHANNELS BASED ON UPSTREAM BANDWIDTH ALLOCATION INFORMATION IN HFC NETWORK - Provided is a method and apparatus for effectively receiving channel bonded upstream burst data in a Hybrid Fiber Cable (HFC) network. | 06-24-2010 |
20110149826 | BROADCASTING MEDIA ACCESS CONTROL DEVICE FOR TRANSMITTING AND RECEIVING PACKETS IN MULTI-CHANNEL BROADCASTING NETWORK - Provided is a Broadcasting Media Access Control (BMAC) device for providing a high-speed and high-capacity broadcasting service via a multi-channel broadcasting network. The BMAC device includes: an input packet classifier for generating a BMAC packet by inserting a serial number according to an input order of a plurality of input packets constituting one of contents; a BMAC packet scheduler for distributing the BMAC packet into a plurality of channels; and a plurality of encapsulators for multiplexing the BMAC packet distributed into the plurality of channels into a transport stream. | 06-23-2011 |
20110247032 | METHOD AND APPARATUS FOR REMOTELY INSTALLING AND UPDATING DIFFERENT SECURITY CLIENTS FOR BROADCASTING OR COMMUNICATION CHANNELS - A method for installing different security clients for channels in a terminal in a conditional access system includes: searching one or more channels searchable in the terminal; requesting, for respective searched channels, security clients necessary for receiving pay programs to be transmitted through the searched channels, to a broadcasting station which takes charge of the searched channels; and downloading and installing, for respective searched channels, the requested security clients from the broadcasting station. | 10-06-2011 |
20120147763 | APPARATUS AND METHOD FOR RECEIVING DATA IN COMMUNICATION SYSTEM - An apparatus for receiving data in a communication system includes: a detection unit configured to calculate power values of a data packet and a ratio of the power values by using a preamble of the data packet in a received signal, and detect the data packet through the calculated ratio of the power values; a control unit configured to calculate a gain compensation value of the detected data packet, and perform an automatic gain control (AGC) on the detected data packet by using the gain compensation value; a compensation unit configured to calculate a DC offset in the received signal, and remove the DC offset from the received signal; and a demodulator configured to demodulate the AGCed data packet. | 06-14-2012 |
20130128732 | APPARATUS AND METHOD FOR FAST LOAD BALANCING BANDWIDTH ALLOCATION BASED ON BINARY SEARCH - An apparatus and method for fast load balancing bandwidth allocation based on a binary search may be provided, wherein the apparatus may include a bandwidth allocation request receiving unit to receive a bandwidth allocation request signal from at least one modem, and a bandwidth allocation processing unit to allocate a bandwidth to an upstream channel of the at least one modem, using a load balancing algorithm, in response to the received bandwidth allocation request signal. | 05-23-2013 |
20130129021 | AUTOMATIC GAIN CONTROLLING DEVICE, ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) RECEIVER EMPLOYING HIGH-ORDER QUADRATURE AMPLITUDE MODULATION (QAM) AND USING AUTOMATIC GAIN CONTROLLING DEVICE, AND MANUFACTURING METHOD OF AUTOMATIC GAIN CONTROLLING DEVICE - Provided is an automatic gain controlling device that may prevent deterioration in performance of an orthogonal frequency division multiplexing (OFDM) receiver, on a cable network that performs communication by an orthogonal frequency division multiplexing (OFDM) scheme using high-order quadrature amplitude modulation (QAM), the automatic gain controlling device including a power computing unit to compute a power of a signal received by the OFDM receiver, and a gain controller to control a gain of the received signal based on the computed power of the received signal. | 05-23-2013 |
20130148028 | DYNAMIC HYBRID BROADCASTING METHOD AND APPARATUS FOR REDUCING POOR RECEPTION AREA OF WIRELESS DIGITAL BROADCASTING SIGNAL - Provided is a broadcasting receiver including a broadcasting signal receiving unit to receive a broadcasting signal via a broadcasting network, a viewing possibility determining unit to determine whether it is possible for a viewer to view the broadcasting signal, a multicasting signal receiving unit to receive a multicasting signal via a wireless communication network, a switching and combining unit to combine or switch the received broadcasting signal and the multicasting signal, and a controlling unit to request the multicasting signal transmitting unit to multicast the multicasting signal based on the determination result, to request the multicasting signal receiving unit to receive the multicasting signal, and to control the switching and combining unit depending on whether the multicasting signal is received. | 06-13-2013 |
20130160048 | SYSTEM AND METHOD OF PROVIDING SIGN LANGUAGE BROADCASTING SERVICE - Provided is a system and method of providing a sign language broadcasting service to viewers having hearing impairments, and more particularly, the system and method of providing a sign language broadcasting service that may enable a user to select an option of viewing only a broadcast image, or an option to viewing both the broadcast image and a sign language interpreting image, by transmitting the broadcast image and the sign language interpreting image using different transport streams. | 06-20-2013 |
20130160069 | APPARATUS AND METHOD FOR BONDING BROADCAST CHANNEL - An apparatus for bonding a broadcast channel, including an encoder to output at least one broadcasting program in a form of a transport stream (TS) packet by encoding the at least one broadcasting program, a multiplexer to multiplex the TS packets by mixing the TS packets with signaling information, and a transmitter to transmit the multiplexed TS packet by distributing the multiplexed TS packet via bonded channels, and the transmitter transmits control packets to control the TS packets along with the TS packets through the bonded channels via which the TS packets is transmitted is provided. | 06-20-2013 |
20130179933 | HEADEND DEVICE FOR CABLE NETWORK AND METHOD OF OPERATING HEADEND DEVICE - Disclosed is a headend device for a cable network and a method of operating the headend device. The headend device for a hybrid fiber coaxial (HFC)-based cable network may transmit a digital video data stream and an Internet Protocol (IP) data stream input using various input interface standards integratedly based on a frequency channel standard for the cable network to improve efficiency. | 07-11-2013 |
20130283331 | METHOD AND APPARATUS FOR INSERTING BROADCAST PROGRAM BY DETECTING AVAILABLE CHANNEL OVER HYBRID FIBER COAX NETWORK OR OPTICAL CABLE NETWORK - An apparatus for combining a broadcasting channel may include a channel detector to detect a vacant Radio Frequency (RF) broadcasting channel used by a photoelectric converter that converts a first broadcast program as an optical signal to a first RF signal, a broadcast receiving interface to receive at least one second broadcast program, a broadcast modulator to generate a second RF signal by modulating the second broadcast program using the vacant RF broadcasting channel, and a channel combiner to combine a broadcasting channel used for the first RF signal and the vacant RF broadcasting channel. | 10-24-2013 |
20140133597 | METHOD FOR TRANSMITTING AND RECEIVING DATA IN OFDM SYSTEM AND APPARATUS THEREOF - Disclosed are a method for transmitting and receiving data and an apparatus thereof, and more particularly, a method for transmitting and receiving data and an apparatus thereof in an orthogonal frequency division multiplexing (OFDM) system. The method for transmitting data in an OFDM system according to the present invention includes encoding and modulating data to be transmitted, configuring the modulated data by a frame constituted by N (an integer larger than 0) OFDM symbols, and transmitting the configured frame, in which the frame includes a first OFDM symbol including a pilot symbol and a second OFDM symbol including lower-order modulated than the modulated data. | 05-15-2014 |
20140211812 | DEMULTIPLEXING APPARATUS, MULTIPLEXING APPARATUS, AND MULTI-CHANNEL TRANSMISSION AND RECEPTION METHOD USING THE SAME - A demultiplexing apparatus, a multiplexing apparatus, and a multi-channel transmission and reception method using the same are provided. The demultiplexing apparatus includes a broadcasting data reception unit for separating a broadcasting data stream into N input packets, an output packet generation unit for generating (N+1) output packets by connecting a pre-header, including a field for multi-channel transmission, with each of the N input packets, and a packet distribution unit for distributing the (N+1) output packets over at least two channels. The multiplexing apparatus includes a packet restoration unit for detecting first field information for restoration and second field information for synchronization from each of pre-headers included in (N+1) output packets received through at least two channels and generating N restoration packets using the first field information and an output synchronization unit for performing output timing synchronization between the N restoration packets using the second field information. | 07-31-2014 |
20140215530 | METHOD AND SYSTEM FOR TRANSMITTING BROADCAST AND DATA STREAM AND METHOD AND APPARATUS FOR CONVERTING BROADCAST AND DATA STREAM IN HFC-BASED CABLE NETWORK - A method for transmitting broadcast and data streams in an HFC-based cable network includes a first transmission step of a broadcast transmission apparatus sending broadcast and data service streams in an IP-based stream or RF signal form through an optical section up to a cell node that is a contact point between the optical section and a cable section of a cable network and a second transmission step of the cell node converting the broadcast and data service streams into one of RF signal, IP-based stream, and RF/IP convergence service stream forms depending on a service type of a subscriber terminal and sending the converted broadcast and data service streams to the subscriber terminal through the cable section. | 07-31-2014 |
20140269608 | OFDM TRANSMISSION METHOD AND APPARATUS - Disclosed are an OFDM transmission method and apparatus. In the present invention, channel bonding information includes at least one of information indicating whether or not a channel through which the transport frame is transmitted is a bonded channel, information indicating how many channels form the bonded channel, and information about a transmission frequency of each of the bonded channels. | 09-18-2014 |
20140286468 | METHOD AND APPARATUS FOR COMPENSATING FOR VARIABLE SYMBOL TIMING USING CYCLIC PREFIX IN NON-SYNCHRONIZED OFDM SYSTEM - Disclosed are a method and apparatus for estimating symbol timing in a non-synchronized OFDM system. The present invention includes synchronizing a frame of a received signal, estimating the symbol timing of each symbol of the frame based on the synchronization, compensating for the symbol timing using a phase difference attributable to a Symbol Timing Offset (STO), variably changing within a Cyclic Prefix (CP) interval due to the frequency offset of a sampling clock and thermal noise, and performing channel equalization using a preamble based on output including corrected phase rotation. | 09-25-2014 |
20140307830 | APPARATUS AND METHOD FOR OFFSET COMPENSATION IN HIGH-ORDER MODULATED ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) TRANSMISSION - An apparatus for offset compensation in high-order modulated orthogonal frequency division multiplexing (OFDM) transmission, the apparatus including a transmitter to configure a pilot signal for transmission and reception synchronization and distortion estimation as a frame, and transmit the frame, and a receiver to estimate a channel distortion of a received signal by estimating and compensating for a clock offset and a frequency offset with respect to the received signal. | 10-16-2014 |
20150033251 | NETWORK PROTOCOL FOR CONTENTS PROTECTION IN DIGITAL CABLE BROADCASTING SERVICE AND CONDITIONAL ACCESS SYSTEM USING THE PROTOCOL - Disclosed are a network protocol for contents protection in a digital cable broadcasting service and a conditional access system using the protocol. A method for renewing conditional access client software (CACS) by a conditional access module in a renewable conditional access system (RCAS) may include: receiving an RCAS announcement message from a headend; transmitting to the headend a key registration request message for requesting an authorization key when the RCAS announcement message is authenticated; receiving a key registration response message including the authorization key from the headend; and generating security factors based on the authorization key and renewing the CACS by using the security factors. | 01-29-2015 |
20150033284 | DIGITAL MULTIMEDIA BROADCASTING APPARATUS AND METHOD FOR MULTIPLE-DRM SERVICE - A method for receiving contents using a mobile terminal according to the present invention is provided. The method includes generating a security channel connected to system being in charge of a service and content protection (SCP) client through an agent downloaded and installed in a mobile terminal; downloading and installing one or multiple SCP client software of different kind from the system through the security channel generated by the agent; and playing back the service or content provided in protected state by a content provider among the one or multiple SCP client software of different kind by driving the decodable SCP client software. | 01-29-2015 |
20150121445 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING BROADCASTING - A broadcasting transmitting apparatus configures one broadcasting channel as at least two video streams, generates a program map table (PMT) representing configuration information of a stream included within the broadcasting channel, sets a program type provided through the corresponding broadcasting channel within the PMT, multiplexes the at least two video streams and signaling information, and transmits the multiplexed two video streams and signaling information through a broadcasting network. | 04-30-2015 |
20150139339 | BROADCAST TRANSMITTING APPARATUS AND METHOD - A broadcasting transmitting apparatus splits a piece of broadcast content into an audio signal and a video signal, encodes the audio signal to generate an audio bit string, encodes the video signal to generate a video bit string, multiplexes the audio bit string and the video bit string, and modulates the multiplexed bit strings into a symbol. The encoded audio bit string is allocated to some bits of the symbol, and the encoded audio bit string is allocated to the remaining bits of the symbol. | 05-21-2015 |
20150156045 | METHOD FOR TRANSMITTING DATA USING VARIABLE GUARD INTERVAL AND APPARATUS THEREOF - In an orthogonal frequency division multiplexing (OFDM) wireless communication system, when path delay information is received from a reception apparatus through a return path after data transmission, a length of a cyclic prefix included in a transmitted signal is adjusted on the basis of a delay value included in the path delay information. | 06-04-2015 |
20150256982 | METHOD AND APPARATUS FOR PROVIDING MOBILE BROADCASTING SERVICE OVER CABLE BROADCAST NETWORK - A method and apparatus for providing a mobile broadcasting service over a cable broadcasting network are provided. A mobile broadcast signal and a cable broadcast signal are transmitted over the cable broadcast network. The cable broadcast signal and the mobile broadcast signal are filtered to pass the mobile broadcast signal, and the passed mobile broadcast signal is sent to a mobile broadcast terminal. | 09-10-2015 |
Patent application number | Description | Published |
20080210789 | Method For Preparing Micron-Sized Ginseng Powder Via Mechanical Grinding - Disclosed is a method for preparing micron-sized ginseng powder via mechanical grinding, the method comprising the steps of: grinding ginseng roots crudely in order to facilitate micro-pulverization of ginseng, grinding the crude ginseng powder finely, and further grinding the ginseng powder ultra-finely. The ginseng micropowder obtained from the method has a maximum particle diameter of 40 μm or less, an average particle diameter of less than 8 μm and a uniform particle size, and thus shows excellent dispersibility, miscibility and absorptiveness. Therefore, the micropowder can be used for manufacturing various health-aid foods or medicines such as drinks, tablets or capsules and cosmetic products such as functional skin care agents or skin packs. | 09-04-2008 |
20090014713 | NITRIDE SEMICONDUCTOR LIGHT EMITTING DEVICE AND FABRICATION METHOD THEREOF - The present invention relates to a GaN based nitride based light emitting device improved in Electrostatic Discharge (ESD) tolerance (withstanding property) and a method for fabricating the same including a substrate and a V-shaped distortion structure made of an n-type nitride semiconductor layer, an active layer and a p-type nitride semiconductor layer on the substrate and formed with reference to the n-type nitride semiconductor layer. | 01-15-2009 |
20120119187 | NITRIDE SEMICONDUCTOR LIGHT EMITTING DEVICE AND FABRICATION METHOD THEREOF - The present invention relates to a GaN based nitride based light emitting device improved in Electrostatic Discharge (ESD) tolerance (withstanding property) and a method for fabricating the same including a substrate and a V-shaped distortion structure made of an n-type nitride semiconductor layer, an active layer and a p-type nitride semiconductor layer on the substrate and formed with reference to the n-type nitride semiconductor layer. | 05-17-2012 |
20130146840 | SEMICONDUCTOR LIGHT EMITTING DEVICE - A semiconductor light emitting device includes: n-type and p-type semiconductor layers; and an active layer disposed between the n-type and p-type semiconductor layers. The active layer has a structure in which a plurality of quantum well layers and a plurality of quantum barrier layers are alternately disposed, wherein the plurality of quantum well layers are made of Al | 06-13-2013 |
20130146842 | SEMICONDUCTOR LIGHT EMITTING DEVICE - A semiconductor light emitting device includes first conductivity type and second conductivity type semiconductor layers, an active layer disposed between the semiconductor layers and having a structure in which one or more quantum well layers and one or more quantum barrier layers are alternately disposed An electron blocking layer is disposed between the active layer and the second conductivity type semiconductor layer. A capping layer is disposed between the active layer and the electron blocking layer and blocking a dopant element from being injected into the active layer from the second conductivity type semiconductor layer. | 06-13-2013 |
20130170281 | VARIABLE RESISTANCE MEMORY DEVICE AND METHOD FOR FABRICATING THE SAME - A variable resistance memory device includes a semiconductor substrate having an active area defined by an isolation layer extending in one direction, a gate line extending in another direction crossing the isolation layer through the isolation layer and the active area, a protective layer located over the gate line, a contact plug positioned in a partially removed space of the active area between the protective layers, and a variable resistance pattern coupled to a part of the contact plug. | 07-04-2013 |
20130324089 | METHOD FOR PROVIDING FINGERPRINT-BASED SHORTCUT KEY, MACHINE-READABLE STORAGE MEDIUM, AND PORTABLE TERMINAL - A portable terminal provides a fingerprint-based shortcut key to realize both security and one touch convenience. The portable terminal includes a fingerprint sensor for recognizing user's fingerprint, a memory for storing fingerprint data, and a controller for mapping and storing first fingerprint data inputted through the fingerprint sensor and a function of the portable terminal in the memory. Upon input of second fingerprint data through the fingerprint sensor, there is a comparison of the first fingerprint data with the second fingerprint data, and performing the function mapped to the first fingerprint data when the first fingerprint data is identical to the second fingerprint data. The portable terminal may perform the authentication and provide the result to another portable terminal, or an authentication server can perform the comparison. | 12-05-2013 |
Patent application number | Description | Published |
20090035656 | ORGANIC ELECTROLYTIC SOLUTION COMPRISING GLYCIDYL ETHER COMPUND AND LITHIUM BATTERY EMPLOYING THE SAME - An organic electrolytic solution includes a lithium salt; an organic solvent containing a high dielectric constant solvent and/or a low boiling point solvent; and a glycidyl ether compound represented by Formula 1: | 02-05-2009 |
20090191465 | POLYSILOXANE-BASED COMPOUND FOR ELECTROLYTE OF LITHIUM SECONDARY BATTERY, ORGANIC ELECTROLYTE SOLUTION INCLUDING THE POLYSILOXANE-BASED COMPOUND, AND LITHIUM BATTERY USING THE SOLUTION - An additive for an electrolyte of a lithium secondary battery, the additive including a polysiloxane-based compound represented by Formula 1 below: | 07-30-2009 |
20100285374 | Electrolytic solution and lithium battery employing the same - An organic electrolytic solution including a lithium salt, an organic solvent, and a linear or cyclic polymerizable monomer that is negatively charged due to localization of electrons on the monomer, and a lithium battery employing the same. Since the organic electrolytic solution prevents decomposition of an electrolyte and elution from or precipitation of metal ions, the lithium battery employing the organic electrolytic solution has excellent lifetime characteristics and cycle characteristics. | 11-11-2010 |
20100297508 | Organic electrolytic solution and lithium battery employing the same - An organic electrolytic solution including a lithium salt, an organic solvent, and a compound represented by the formula | 11-25-2010 |
20130029234 | POROUS CARBONACEOUS COMPOSITE MATERIAL, POSITIVE ELECTRODE AND LITHIUM AIR BATTERY INCLUDING POROUS CARBONACEOUS COMPOSITE MATERIAL, AND METHOD OF PREPARING THE SAME - A porous carbonaceous composite material including a core including a carbon nanotube (CNT); and a coating layer on the core, the coating layer including a carbonaceous material including a hetero element. | 01-31-2013 |
20130078533 | ELECTROLYTE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - An electrolyte for a lithium secondary battery, the electrolyte including a lithium salt, a non-aqueous organic solvent, and a polar additive based on a substituted hetero-bicyclic compound. Oxidation of the electrolyte is prevented by formation of a polar thin film on a surface portion of the positive electrode, which facilitates transfer of lithium ions. The lithium secondary batteries using the electrolyte have excellent high temperature life characteristics and high temperature conservation characteristics. | 03-28-2013 |
20130137002 | LITHIUM AIR BATTERY - A lithium air battery including a negative electrode comprising lithium, a positive electrode using oxygen as a positive active material, and an organic electrolyte including an organic compound capable of intercalating and deintercalating electrons involved in an electrochemical reaction. | 05-30-2013 |
20130149616 | PROTECTED ANODE AND LITHIUM AIR BATTERY AND ALL-SOLID BATTERY INCLUDING PROTECTED ANODE - A protected anode including an anode including a lithium titanium oxide; and a protective layer including a compound represented by Formula 1 below, a lithium air battery including the same, and an all-solid battery including the protected anode: | 06-13-2013 |
20130224609 | ELECTROLYTE AND LITHIUM AIR BATTERY INCLUDING THE SAME - An electrolyte including a lithium ion conductive polymer, a lithium salt, and an ionic liquid including an anion represented by Formula 1 below: | 08-29-2013 |
20130330639 | LITHIUM AIR BATTERY MODULE - A lithium air battery module including a lithium air battery cell including a first electrolyte; an additional electrolyte disposed non-adjacent the first electrolyte; and a housing which accommodates the lithium air battery cell and the additional electrolyte. | 12-12-2013 |
20140011101 | ANODE FOR LITHIUM AIR BATTERY AND LITHIUM AIR BATTERY INCLUDING THE ANODE - An anode for a lithium air battery including an anode active material layer including an anode active material; a first protective layer disposed on the anode active material layer; and a second protective layer disposed on the first protective layer, wherein the first protective layer includes a liquid electrolyte having a viscosity of 5 centipoise or less at a temperature of 20° C., and the second protective layer includes an ion conductive solid electrolyte membrane. | 01-09-2014 |
20140072881 | LITHIUM BATTERY - A lithium battery including a negative electrode including a lithium metal or a lithium alloy; a positive electrode; and a polymer gel electrolyte contacting the negative electrode, wherein the polymer gel electrolyte has an ionic conductivity of about 10 | 03-13-2014 |
20140084849 | APPARATUS AND METHOD OF CHARGING RECHARGEABLE BATTERY - The apparatus of charging a rechargeable battery includes a voltage detector which detects a voltage value between terminals of a rechargeable battery, a current generator which generates current for charging the rechargeable battery and outputs the generated current to the terminals of the rechargeable battery, and a controller which controls the current generator based on the voltage value detected by the voltage detector. The current generator outputs a first current for which a direction thereof between the terminals of the rechargeable battery is constant, in a charging period of the rechargeable battery, wherein the first current comprises direct current, and a second current for which a direction thereof between the terminals of the rechargeable battery is periodically reversed, in an intermittent period of the rechargeable battery. | 03-27-2014 |
20140178775 | PROTECTED ANODE FOR LITHIUM AIR BATTERY AND LITHIUM AIR BATTERY INCLUDING THE SAME - A protected anode for lithium air batteries and a lithium air battery including the protected anode are provided. The protected anode includes: an anode intercalates and deintercalates lithium ions; a lithium ion-conductive solid electrolyte membrane; and a polymer electrolyte disposed between the anode and the ion-conductive solid electrolyte membrane, wherein the polymer electrolyte includes a lithium ion-conductive polymer, a compound represented by Formula 1 having a number average molecular weight from about 300 to about 1,000, and a lithium salt, and an amount of the compound of Formula 1 is from about 10 parts to about 25 parts by weight based on 100 parts by weight of the polymer electrolyte: | 06-26-2014 |
20140178777 | PROTECTED ANODE, LITHIUM AIR BATTERY INCLUDING THE SAME, AND METHOD OF PREPARING ION CONDUCTIVE PROTECTIVE LAYER - A protected anode including: an anode including lithium or capable of reversibly incorporating lithium ions; and a lithium ion-conductive protective layer on the anode and including a ceramic composite represented by Formula 1: | 06-26-2014 |
20140234733 | CATHODE, LITHIUM AIR BATTERY INCLUDING SAME, AND PREPARATION METHOD THEREOF - An air battery cathode including an organic-inorganic composite material including lyophobic nanopores, the organic-inorganic composite material including a porous metal oxide, and a lyophobic layer on a surface of a pore of the porous metal oxide and having a contact angle of greater than about 90°; and a binder. Also a lithium air battery including the cathode, and a method of manufacture the cathode. | 08-21-2014 |
20140356736 | POSITIVE ELECTRODE FOR LITHIUM BATTERIES, LITHIUM BATTERY INCLUDING THE POSITIVE ELECTRODE, AND METHODS OF MANUFACTURE THEREOF - A positive electrode for a lithium battery including a protected negative electrode containing a lithium metal or a lithium alloy, wherein the positive electrode contains a positive electrode active material, a polyoxometalate compound, and a conductive material. Also provided is a lithium battery including the positive electrode. | 12-04-2014 |
20150104720 | LITHIUM AIR BATTERY - A lithium air battery including an anode for intercalating/deintercalating lithium ions; a cathode having oxygen as a cathode active material, a lithium ion conductive solid electrolyte membrane disposed between the anode and the cathode; and an electrolyte, wherein the electrolyte is disposed between the lithium ion conductive solid electrolyte membrane and the cathode, and wherein the electrolyte includes at least one compound selected from a compound represented by Formula 1 and a copolymer including a repeating unit represented by Formula 2 as an additive: | 04-16-2015 |
20150140452 | METAL-AIR BATTERY HAVING FOLDED STRUCTURE AND METHOD OF MANUFACTURING THE SAME - A metal-air battery including: a negative electrode metal layer; a negative electrode electrolyte layer disposed on the negative electrode metal layer; a positive electrode layer disposed on the negative electrode electrolyte layer, the positive electrode layer comprising a positive electrode material which is capable of using oxygen as an active material; and a gas diffusion layer disposed on the positive electrode layer, wherein the negative electrode electrolyte layer is between the negative electrode metal layer and the positive electrode layer; wherein the negative electrode metal layer, the negative electrode electrolyte layer, and the positive electrode layer are disposed on the gas diffusion layer so that the positive electrode layer contacts a lower surface and an opposite upper surface of the gas diffusion layer, and wherein one side surface of the gas diffusion layer is exposed to an outside. | 05-21-2015 |
20150221952 | POSITIVE ELECTRODE FOR LITHIUM AIR BATTERY AND LITHIUM AIR BATTERY INCLUDING THE SAME - A lithium air battery including a negative electrode capable of incorporation and deincorporation of lithium ions, a positive electrode capable of capable of incorporating and deincorporating oxygen, and a lithium ion conductive polymer electrolyte disposed between the negative electrode and the positive electrode, wherein the positive electrode includes a carbonaceous material and a carbide of a metal or a semi-metal element. The lithium ion conductive polymer electrolyte may include a lithium salt and a hydrophilic polymer. | 08-06-2015 |
Patent application number | Description | Published |
20080270872 | Apparatus and method for encoding low density parity check codes in a communication system - A Low Density Parity Check (LDPC) code encoding apparatus for a communication system is provided. The encoding apparatus receives information bits, and generates an LDPC code by encoding the information bits using an interleaving scheme. The interleaving scheme is generated such that when the LDPC code is punctured, there is no short-length cycle in a Tanner graph of the punctured LDPC code. | 10-30-2008 |
20100110875 | MODIFIED SLM SCHEME WITH LOW COMPLEXITY FOR PAPR REDUCTION OF OFDM SYSTEMS - Provided are an apparatus and method for reducing a PAPR with less computation complexity without distortion using a selected mapping scheme (SLM) in an OFDM system. The method includes: generating a plurality of OFDM signal sequences by performing an inverse fast Fourier transform (IFFT) operation on input symbol sequences, which are probabilistically independent and have identical information; linearly combining the plurality of OFDM signal sequences by using complex numbers; and generating different OFDM signal sequences based on the linear combination. Accordingly, the number of phase sequences can be increased without almost increasing a computation amount of SLM. | 05-06-2010 |
20100296433 | SOURCE ANTENNA SWITCHING SCHEME FOR NON-ORTHOGONAL PROTOCOL - The present invention relates to a source antenna switching scheme for a non-orthogonal protocol; and more particularly, to a source antenna switching scheme for a non-orthogonal protocol, which transmits a signal of a source node to a destination node through a relay node. The present invention provides a source antenna switching scheme for a non-orthogonal decode-and-forward protocol that can acquire a greater diversity than the conventional NDF protocol. In other words, the present invention provides a source antenna switching scheme for a non-orthogonal decode-and-forward protocol that can increase a diversity order by adding a reasonable priced antenna instead of expensive hardware such as an RF chain when there are a plurality of antenna in the RF chain. | 11-25-2010 |
20110185267 | ENCODING DEVICE, CONTROLLER AND SYSTEM INCLUDING THE SAME - An encoding device includes an encoder and a puncturing unit. The encoder generates parity bits based on information bits. The puncturing unit punctures the parity bits based on a puncturing pattern complying with a first criterion determining a period of the puncturing pattern and a second criterion determining positions of remaining parity bits. | 07-28-2011 |
20120060071 | PRODUCT CODE DECODING METHOD AND DEVICE - A method for a decoding device to decode a codeword matrix of a product code includes: generating a first extended parity check matrix for a vertical code; decoding a horizontal codeword of a plurality of rows in the codeword matrix to thus perform a first decoding process; generating a second extended parity check matrix by removing a column corresponding to a row of the first decoding-succeeded horizontal codeword from the first extended parity check matrix; and decoding the first decoding-failed horizontal codeword by using the second extended parity check matrix to thus perform a second decoding process. Therefore, the simple and reliable product code decoding method is provided. | 03-08-2012 |
20120184232 | METHOD FOR SELECTING SOURCE TRANSMIT ANTENNA IN COOPERATIVE MIMO COMMUNICATION SYSTEM - Disclosed is a method for selecting a source transmit antenna in a cooperative multiple-input and multiple-output (MIMO) communication system including a source node, a relay node and a destination node. The method includes determining a source transmit antenna selection metric such that a source-destination channel, a source-relay channel and a relay-destination channel are related to one another, and selecting a positive integer number of antennas such that the source transmit antenna selection metric is maximized. | 07-19-2012 |
20130077467 | RECEIVER IN ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS SYSTEM AND SIGNAL PROCESSING METHOD THEREOF - According to an exemplary embodiment of the present invention, a receiver in an orthogonal frequency division multiple access (OFDMA) system includes: an extraction unit that extracts received user signal subvectors for subcarriers assigned to the receiver from received signal vectors received from a transmitter; and a fast Fourier transform (FFT) unit that performs a fast Fourier transform on the received user signal subvectors. | 03-28-2013 |
20140173375 | LDPC ENCODING/DECODING METHOD AND DEVICE USING SAME - Disclosed are an LDPC encoding/decoding method and a device using same. The method includes the steps of: (a) generating an information bit sequence by determining information bits to be encoded from among a group of information bits; (b) generating a modified information bit sequence by inserting a preset error floor prevention bit into at least one preset position in the information bit sequence; (c) generating a parity check bit on the basis of the modified information bit sequence; and (d) performing encoding by using the modified information bit sequence and the parity check bit. According to the disclosed method, performance degradation of LDPC encoding and decoding due to an error floor phenomenon can be prevented. | 06-19-2014 |