Abstract: A cathode active material for a lithium secondary battery according to an embodiment includes lithium metal oxide particles containing lithium and nickel, and containing a small amount of cobalt or no cobalt. An average particle diameter, a modulus and a hardness of the lithium metal oxide particles are adjusted to satisfy a desired relation. A lithium secondary battery has improved high-temperature storage properties, structural stability and high power properties.

Abstract: A system and method for distributing data are provided. The system for distributing data which manages the distribution of data from one or more data transmitting nodes to a data receiving node, according to one embodiment of the present invention, comprises: an off-chain pool management unit; an integrity authentication unit; a data distribution verification unit; and a block chain storage unit.

Abstract: A system and method for distributing data are provided. The system for distributing data which manages the distribution of data from one or more data transmitting nodes to a data receiving node, according to one embodiment of the present invention, comprises: an off-chain pool management unit; an integrity authentication unit; a data distribution verification unit; and a block chain storage unit.

Abstract: An earphone connector of a mobile terminal prevents noise from occurring when inserting and removing an earphone. The earphone connector of a mobile terminal includes a main body having a passage for inserting an earphone. Aground terminal, aright sound terminal, and a left sound terminal are disposed at a preset position of the main body to contact with a corresponding ground terminal, right sound terminal, and left sound terminal of the earphone, respectively, when the earphone is inserted into the passage. A microphone terminal contacts with a corresponding microphone terminal of the earphone when the earphone is fully inserted. And an elastic member applies an external force such that the microphone terminal does not contact with at least one of the corresponding right sound terminal and the left sound terminal of the earphone before the earphone is fully inserted.

Abstract: A portable device having a single unit antenna for various functions is provided. The device includes a main body configured to house a battery, a battery cover unit that is configured to be coupled with the main body and cover the battery, and a single unit antenna for various functions having a specified length, the antenna extending at least across a portion of the battery cover unit, and configured to support a plurality of functions.

Abstract: A dual-mode mobile terminal, which can access synchronous and asynchronous mobile communication systems, includes a key input panel and a controller. The key input panel includes a call switching key for switching between calls from the two systems and a call end key for ending calls from the two systems. While the terminal performs communication of one call received from one of the two systems in a general communication mode over a communication channel currently established by the one system, the controller determines whether an incoming call is received from the other system. If the incoming call is received, the controller notifies the user of receipt of the incoming call. If the call switching key is pressed, the controller prepares a communication environment for communication of the incoming call, allowing the user to perform the communication of the incoming call while maintaining the currently established communication channel.

Abstract: A dual-mode mobile terminal, which can access synchronous and asynchronous mobile communication systems, includes a key input panel and a controller. The key input panel includes a call switching key for switching between calls from the two systems and a call end key for ending calls from the two systems. While the terminal performs communication of one call received from one of the two systems in a general communication mode over a communication channel currently established by the one system, the controller determines whether an incoming call is received from the other system. If the incoming call is received, the controller notifies the user of receipt of the incoming call. If the call switching key is pressed, the controller prepares a communication environment for communication of the incoming call, allowing the user to perform the communication of the incoming call while maintaining the currently established communication channel.

Abstract: A dual-mode mobile terminal, which can access synchronous and asynchronous mobile communication systems, includes a key input panel and a controller. The key input panel includes a call switching key for switching between calls from the two systems and a call end key for ending calls from the two systems. While the terminal performs communication of one call received from one of the two systems in a general communication mode over a communication channel currently established by the one system, the controller determines whether an incoming call is received from the other system. If the incoming call is received, the controller notifies the user of receipt of the incoming call. If the call switching key is pressed, the controller prepares a communication environment for communication of the incoming call, allowing the user to perform the communication of the incoming call while maintaining the currently established communication channel.

Abstract: Disclosed is a main board of a portable terminal including a socket receiving an additional device, such as a memory card and being installed at one side of the main board, an interface connector attached to a printed circuit board, and a battery terminal attached to the printed circuit board. The interface connector and the battery terminal form a stacked structure together with the socket. The main board of the portable terminal is provided at a predetermined portion thereof with a stacked structure of the socket for receiving the memory card, the interface connector, and the battery terminal, thereby minimizing mounting space required for the above elements, ensuring mounting space for installing other parts, and efficiently utilizing part mounting space. The socket and the interface connector are located adjacent to each other, and the socket and the interface connector are exposed through a common opening, thereby making the assembly for the portable terminal more efficient.

Abstract: A function of emitting a color depending on a state of a mobile communication terminal is implemented. To do this, a keypad of the mobile communication terminal is illuminated with a color corresponding to a sensed result when a predetermined operation or event occurs. In order to illuminate the keypad according to a state of the mobile communication terminal using different colors, a keypad illumination unit includes a light source for generating a plurality of colors and a waveguide layer for diffusing light generated by the light source. Accordingly, a user can easily recognize a state of the mobile communication terminal through a color emitted through the keypad, and interest and convenience of the user can be satisfied with the mobile communication terminal emitting various colors.

Abstract: An apparatus for preventing static electricity and electric shock for a mobile communication terminal is disclosed having a main body housing that is partially or entirely made of a conductive material. The apparatus includes a ground of a Printed Circuit Board (PCB) and a diode-varistor parallel circuit connected to the ground of the PCB to form a discharge path.

Abstract: Disclosed is a main board of a portable terminal including a socket receiving an additional device, such as a memory card and being installed at one side of the main board, an interface connector attached to a printed circuit board, and a battery terminal attached to the printed circuit board. The interface connector and the battery terminal form a stacked structure together with the socket. The main board of the portable terminal is provided at a predetermined portion thereof with a stacked structure of the socket for receiving the memory card, the interface connector, and the battery terminal, thereby minimizing mounting space required for the above elements, ensuring mounting space for installing other parts, and efficiently utilizing part mounting space. The socket and the interface connector are located adjacent to each other, and the socket and the interface connector are exposed through a common opening, thereby making the assembly for the portable terminal more efficient.

Abstract: A dual-mode mobile terminal, which can access synchronous and asynchronous mobile communication systems, includes a key input panel and a controller. The key input panel includes a call switching key for switching between calls from the two systems and a call end key for ending calls from the two systems. While the terminal performs communication of one call received from one of the two systems in a general communication mode over a communication channel currently established by the one system, the controller determines whether an incoming call is received from the other system. If the incoming call is received, the controller notifies the user of receipt of the incoming call. If the call switching key is pressed, the controller prepares a communication environment for communication of the incoming call, allowing the user to perform the communication of the incoming call while maintaining the currently established communication channel.