Abstract:
The present invention relates to a lithium secondary battery. The present invention provides the lithium secondary battery including a positive electrode, a negative electrode, and a non-aqueous electrolyte solution. The negative electrode includes a water-dispersible binder and a conduction agent. The non-aqueous electrolyte solution includes fluoroethylenecarbonate (FEC). The batteries of the present invention are advantageous in that they have a high efficiency charging lifespan characteristic and enable high capacity charging in a short time.
Abstract:
Compositions, and methods of making thereof, comprising from about 1% to about 5% of a perfluorinated sulfonic acid ionomer or a hydrocarbon-based ionomer; and from about 95% to about 99% of a solvent, said solvent consisting essentially of a polyol; wherein said composition is substantially free of water and wherein said ionomer is uniformly dispersed in said solvent.
Abstract:
The present invention relates to terphenyl dihydroxy monomers containing fluorine and fluorinated poly(arylene ether sulfide)s prepared by using the monomers, more particularly, terphenyl dihydroxy monomers containing both two hydroxy functional groups and fluorine and fluorinated poly(arylene ether sulfide)s prepared by an aromatic nucleophilic substitution polymerization (SNAr) using the monomers, which are thus useful as optical materials in the field of information telecommunications.
Abstract:
The present invention relates to a siloxane monomer containing a trifluorovinylether group and a sol-gel hybrid polymer prepared using the monomer, more particularly to siloxane monomer with novel structure prepared by reacting alkoxychlorosilane with a Grignard reagent containing a trifluorovinylether (—OC2F3) group, a method of preparing the same and a sol-gel hybrid polymer containing a perfluorocyclobutane (PFCB) group prepared from sol-gel reaction using said siloxane monomer containing a trifluorovinylether group.
Abstract:
A network system for interworking a Wireless Local Area Network (W-LAN) and a 3rd-Generation (3G) mobile communication network through a Radio-over-Fiber(RoF) link and an authentication method in interworking in the network system are provided. The network system includes a 3G mobile communication network and a W-LAN system. The 3G mobile communication network includes a voice signal processing network connected to a Public Switched Telephone Network (PSTN) for voice call processing with respect to a predetermined mobile terminal, a packet data network for data communication with the predetermined mobile terminal, and a terminal device for communication with the predetermined mobile terminal. The W-LAN system is connected to the packet data network of the 3G mobile communication network to provide a W-LAN service to the predetermined mobile communication terminal. The W-LAN system is implemented in a plurality of Base Transceiver Stations (BTSs) included in the 3G mobile communication network through the RoF link.
Abstract:
Disclosed is a method for forming a synchronous frame to be transmitted in a Residential Ethernet System, which is capable of discretely transmitting synchronous data and asynchronous data, wherein the synchronous frame includes synchronous packets which are formed according to destinations of synchronous data. The method includes the steps of: receiving the synchronous data having different destinations, and classifying the received synchronous data according to the destinations of the synchronous data; adding a synchronous header to each of the synchronous data classified according to the destinations in order to insert synchronous information into each synchronous data; and adding an Ethernet header for Ethernet processing, thereby forming the synchronous packets.
Abstract:
Disclosed is a method for providing an electronic program guide (EPG) for digital broadcasting. The method includes the steps of analyzing motion picture experts group (MPEG)-2 transport stream for the digital broadcasting by a digital broadcasting receiver of a digital broadcasting subscriber as the digital broadcasting subscriber executes an electronic program guide (EPG) function, obtaining a PID of an elementary stream, which transmits an object carousel, by analyzing a program map table (PMT) of the motion picture experts group (MPEG)-2 transport stream if an application program is transmitted, downloading the application program using the PID information of the elementary stream and then storing the application program in a temporary storage device, displaying electronic program guide information through display of the digital broadcasting subscriber, and executing the application program when contents relating to the application program are selected in electronic program guide information.
Abstract:
Integrated wired and wireless wavelength division multiplexing passive optical network (WDM PON) apparatus using a light source mode-locked to fed incoherent light includes: a fed light generator for providing fed light for up/downstream signals via a broadband light source emitting an incoherent optical signal; a central office (CO) for receiving, mode-locking, and downstream-optical-transmitting the incoherent optical signal generated by the fed light generator and receiving and optical-detecting an upstream optical signal transmitted from a subscriber unit; and the subscriber unit for receiving, mode-locking, and upstream-optical-transmitting the incoherent optical signal generated by the fed light generator and receiving and optical-detecting a downstream optical signal transmitted from the CO, wherein a wired optical transmitter for transmitting a baseband wired signal and a wireless optical transmitter for transmitting a high frequency radio frequency (RF) signal are comprised for up/downstream optical transmission of the CO and the subscriber unit.
Abstract:
A dual-port broadband light source with independently controllable output powers includes a broadband light source having a first gain medium pumped by an input pump light in order to output a first amplified spontaneous emission through both ends thereof. A second gain medium pumped by another input pump light in order to output a second amplified spontaneous emission through both ends thereof. A reflector disposed between the opposite ends of the first and second gain mediums to reflect the input first and second amplified spontaneous emissions. The first and second amplified spontaneous emissions output from the first and second gain mediums are then output to the outside through first and second output terminals.
Abstract:
Provided is a cylindrical battery in which an electrode assembly fabricated by rolling a cathode/separator/anode and an electrolyte are provided in a cylindrical can, wherein a cap assembly mounted on the opening top of the cylindrical can comprises: a safety vent provided with a predetermined notch, to allow breakage due to high-pressure gas of the battery, a current interruptive device to interrupt current, welded to the bottom of the safety vent, and a gasket for the current interruptive device to surround the periphery of the current interruptive device, wherein the current interruptive device comprises two or more through holes to allow exhaustion of gas, wherein the through holes have a size of 20 to 50% with respect to the total area of the current interruptive device.