Abstract: A mobile terminal and operational method may store or output log information related to usage histories according to at least one of a condition, location, and status indicated by situation information. The mobile terminal can be conveniently operated on the basis of past usage histories. The operation method for the mobile terminal includes: creating situation information on the basis of at least one of location information, status information and condition information of the mobile terminal; collecting log information related to usage histories of the mobile terminal from the time of situation information creation or within a preset time after situation information creation; linking the situation information with the log information and storing the linked information; and outputting, when new situation information equal to the stored situation information is created, log information linked to the stored situation information.

Abstract: An antenna apparatus for a printed circuit board including an auxiliary antenna which includes a printed circuit board and mounting components. An antenna pattern is formed on the printed circuit board, and the antenna apparatus includes a first auxiliary antenna unit formed on an upper surface of the printed circuit board; and a second auxiliary antenna unit provided at a location on a lower surface of the printed circuit board that corresponds to location of the first auxiliary antenna unit on the upper surface of the printed circuit board. Efficiency by the antenna apparatus according to the present invention can be increased by approximately 17%.

Abstract: A portable terminal with a speaker device includes a body housing, and a speaker module provided in the body housing and slidably retracted or extracted into/from the body housing. The speaker module includes a speaker housing slidably settled in the body housing, guide rails provided in the body housing, for sliding the speaker housing, at least one guide protrusion provided on the speaker housing and slidably engaged with the guide rails, and a moving member protruding from the speaker housing to an outside of the body housing, for retracting or extracting the speaker housing into/from the body housing.

Abstract: An earphone having an under hanger reduces movement of the earphone from vibrations that occur while a user is typically in motion. The earphone preferably includes: a housing for housing a speaker therein; a protector installed in a front surface of the housing and having a mesh for delivering a sound from the speaker; and an under hanger provided at a lower part of the housing to closely contact along a lower part of the rear side of an earflap of a user. The provision of an under hanger in a lower part of the earphone prevents from being easily separated from a user's ear. Further, by providing an under hanger made of a soft material, as the earphone closely contacts with the user's ear, a sound quality is improved and a wearing feeling of the earphone is improved.

Abstract: Disclosed is a method for evaluating the qualities of the user's color vision by means of the FM chromaticity test or directly measuring the defective factors of the user causing the color blindness. Thus it modifies the color composition of a video displaying apparatus according to a numerical analysis of the color and degree of color blindness specific to each dichromatic individual, so that he may perceive the same colors as the normal person. Also discloses is an apparatus for performing the method steps described herein.

Abstract: A keypad apparatus for an electronic device permits a thinner construction. The keypad apparatus includes a first light guide plate having key buttons molded in one body attached onto the first light guide plate, a second light guide plate disposed under the first light guide plate, a first light source disposed at one side of the first light guide plate, a second light source disposed at one side of the second light guide plate, and key input switches associated with the key buttons.

Abstract: A method for performing communication in the wireless sensor network is disclosed. The upper node transmits a beacon message to the lower nodes, wherein the beacon message distinguishes an indirect transmission interval, in which the upper node transmits downlink data to the plurality of lower nodes, from a direct transmission interval adjacent to the indirect transmission interval, in which the upper node receives uplink data from the plurality of lower nodes. The lower nodes determine the indirect transmission interval and the direct transmission interval from the received beacon message. The downlink data is transmitted from the upper node to the lower nodes in the indirect transmission interval. The uplink data is transmitted from the lower nodes to the upper node in the direct transmission interval. When communication is performed between the upper node and the lower nodes, the data can be efficiently transmitted from the upper node to the lower nodes.

Abstract: A medium access control (MAC) frame provision method establishes security in an IEEE 802.15.4 network. A MAC frame is generated, which includes a MAC header, a payload field, and a frame check sequence (FCS) field, the payload field including relevant main data according to a frame type defined in the MAC header. A disguised decoy data sequence number (DSN) is generated and inserted into the MAC header. A real DSN, which is a corresponding transmission sequence number of the MAC frame, is generated and inserted into the payload field. The MAC frame is transmitted, including the encrypted payload field, to a counterpart node. A MAC ACK frame acknowledges reception of the transmitted MAC frame; and a DSN is compared in the received MAC ACK frame with the real DSN. An authentication of the counterpart node is performed when the received MAC ACK frame is equal to the real DSN.

Abstract: A packet transmission method for a WPAN that for alleviating traffic concentration in an active period and improving network throughput by controlling packet transmission timing in the active period. A packet transmission method for a wireless personal area network including a coordinator operating with a specific duty cycle and a plurality of devices includes determining, when a packet is generated, whether there is another packet waiting to be sent; determining, if there is no other packet waiting to be sent, whether the network is in an inactive period; setting, when network is in an inactive period, a backoff time; and sending the packet when the backoff time has expired. The packet transmission method controls an initial backoff value adaptively to a duty cycle of the network.

Abstract: An apparatus and a method for providing a white board service in a mobile communication system are provided, wherein a bit stream received from a counterpart node is demuxed into data of a logic channel and data of a control channel using a demuxing protocol. The demuxed data is decoded for output.

Abstract: A method for photographing a panoramic picture includes the steps of checking motion of a corresponding photographing apparatus compares currently input images and previous images in real time through a motion estimation technique employing exposure compensation. Respective images constituting a panoramic picture are photographed, and image photography information is checked that includes focus distance and optical magnification to calculate actual photography range distance of the images. A pre-set threshold is set in consideration of a calculated actual photography range distance of the images. The checked motion is confirmed as to whether the pre-set threshold has been reached, and photography time points of the respective images are determined. The respective images are photographed according to a manual mode or an automatic mode at the photography time point of the respective images.

Abstract: A method and a device for supporting a call service are provided. In the process of performing communication with another mobile communication terminal, a network identification number is detected from SID information received from a base station, a service provider of the other mobile communication terminal is determined based on the detected network identification number, and a subscriber information module that can use a communication service based on the determined service provider is recommended in the case of communicating with the other mobile communication terminal.

Abstract: A block-based object counting apparatus and a block-based object counting that improves the counting of objects by using a camera. The object counting apparatus includes: a camera acquiring an image; a storage unit for storing average sizes and error data of an object in units of image blocks; and a control unit having a data inputter for receiving the acquired image for input, an object size determinator for determining appearance of the object by comparing a current image with a previous image and then determining the size of the object, a block determinator for determining a block where the object is located, and a counter for counting the object and fixing the counting of the object by comparing the size and location data of the object with data stored in a storage unit.

Abstract: A fast channel switching method and apparatus for a digital broadcast receiver having a single tuner are disclosed. The fast channel switching method includes setting an ongoing service channel and at least one standby service channel, buffering broadcast data received through the ongoing and standby service channels, outputting the buffered broadcast data of the ongoing service channel, determining whether the ongoing service channel is switched to one of the standby service channels, outputting, if the ongoing service channel is switched to one of the standby service channels, the buffered broadcast data of the switched standby service channel and resetting the ongoing and standby service channels.

Abstract: Disclosed is a method and an apparatus for dithering a pixel value in a image. The method includes checking a difference in chrominance signals between a particular pixel and a pixel adjacent to the particular pixel, in an input image, designating the particular pixel as being in a flat or a non-flat area in consideration of the difference in chrominance signals and dithering the particular pixel when the pixel is designated as being in the non-flat area.

Abstract: Method and device for exchanging messages in a VLC navigation system is provided, in which a map server generates a provision message in the form of visible light signals through all lamps in an area, using a PLC network, where a navigation service is provided, a terminal that wants to implement the navigation service among terminals that have received the provision message transmits a registration request message to the map server, the map server transmits a registration response message for the registration request message to the terminal, the terminal transmits a map request message including information about a destination to the map server, the map server transmits a map response message including information about a path to the destination to the terminal, and the terminal displays map information and the path.

Abstract: A method for high-speed image processing based on graphic processing unit includes processing an input image for the image processing in a texture format of a 32 bit floating point, and performing a predetermined algorithm for the image processing on the input image through at least one or more Framebuffer Object (FOB) and outputting the result as texture data.

Abstract: A color setting apparatus and method for a system for reproducing multimedia data are provided. The apparatus includes a color setting controller for displaying a closed curve band divided into at least two equal-sized sections each containing a different color, and a setting band having at least two sections for indicating change of a set value of each of the colors on a screen, and for changing the set value of a selected color and displaying the changed color according to the changed set value on the screen. The color setting controller increases or decreases the size of the section for indicating change of the set value according to the set value.

Abstract: A system and method for continuing a communication link while maintaining visibility in visible light communication. A frame is transmitted by a sender for establishing a communication link before data transmission to a receiver by a sender. A receiver sends a response frame that reports on establishment of the communication link prior to data transmission by the sender. A data frame containing information is transmitted by the sender to the receiver. An acknowledgment frame is transmitted to the sender in response to the data frame. A disconnect frame is transmitted by the sender which is acknowledged by the receiver. A visible sequence is transmitted during a time period when the sender and the receiver do not transmit respective frames for communication to maintain visibility between two devices that may be communicating otherwise by, for example, infrared communication.

Abstract: Disclosed is a portable electronic device having an interceptor for cutting off foreign substances such as water, dust or the like from being entered between the coupling surfaces thereof. The portable electronic device includes: a first case; a second case to be joined with the first case; and an intercepting part integrally formed with at least one of the first case or the second case, wherein the intercepting part is sealingly engaged with the coupling surface of the first case or the second case to prevent foreign substances and waterproof the device thereof.