Abstract:
Disclosed is an internal antenna using electromagnetic coupling that supports improved impedance matching. The antenna includes a first conductive member having one end electrically connected with a power feed point; a second conductive member separated from the first conductive member by a particular distance and electrically connected with a ground; a radiator extending from the second conductive member; and a grounding plate joined with the other end of the first conductive member. This antenna provides the advantages of adequately ensuring wide-band and multi-band characteristics while improving impedance matching properties.
Abstract:
A method, medium, and system for compressing and decoding mesh data in a three-dimensional mesh model is provided. The system for compressing and decoding mesh data in a three-dimensional mesh model includes a mesh data acquisition unit acquiring mesh data from a three-dimensional mesh model, a cluster mesh generation unit generating a plurality of cluster meshes by using the mesh data, and a local quantization unit quantizing geometry information of respective vertexes through application of respective local coordinate systems to the respective cluster meshes and generating quantized data of the respective vertexes included in the respective cluster meshes.
Abstract:
Disclosed is a dry carbon dioxide capture apparatus with improved carbon dioxide capture efficiency through preventing gas backflows into vertical transport lines. The dry CO2 capture apparatus includes a capture reactor having a capture buffer chamber on the bottom side, a capture diffusion plate on top of the capture buffer chamber, and adsorbent particles in a space above the capture diffusion plate; a first separator connected to the capture reactor through a vertical transport line; a regenerator having a regeneration buffer chamber on the bottom side, a regenerating diffusion plate on top of the regeneration buffer chamber, and adsorbent particles in a space above the regenerating diffusion plate; a second separator connected to the regenerator through a gas separation line; and a second particle transfer line connected to the regenerator at one end and connected to the capture reactor at the other end.
Abstract:
The present invention provides a heating system for a fuel cell vehicle, in which an additional heating source is used together with an electric heater to lower power consumption and increase fuel efficiency of prior systems. For this purpose the present invention provides a heating system for a fuel cell vehicle, the heating system including: an electric heater for heating air blown by a blower fan and supplied to the interior of the vehicle; and a heater core provided in a coolant line, through which coolant for cooling a fuel cell stack is circulated, and is used for heating the air, blown by the blower fan and supplied to the interior of the vehicle, by heat transfer between the coolant and the air, wherein the heater core is provided at the downstream side of the fuel cell stack in a coolant circulation path such that the air is heated by waste heat of the coolant discharged from the fuel cell stack.
Abstract:
A method and apparatus is provided for establishing a session upon satisfaction of particular conditions in a messaging service system such as SIMPLE Instant Messaging (IM), Push to talk over Cellular (PoC), and Converged IP Messaging) (CPM) services, in which a client provides particular conditions to a server separately for a predefined group session, an Ad-hoc group session and a one-to-one session, and the server establishes a session to the pertinent members upon satisfaction of the particular conditions. By doing so, a session reflecting particular conditions set by the client is established in the SIP-based system, thereby offering further differentiated messaging services.
Abstract:
A method is provided for receiving a session history by a Controlling Function (CF) in a communication system. The method includes sending, by a CF in a first domain, a first message requesting a session history to a Conversation Server (CS) in the first domain; receiving, from the CS in the first domain, a second message including access information to a CS in a second domain, which has a session history, when the CS in the first domain has no session history; sending a third message requesting a session history to the CS in the second domain, which has the session history, based on the access information; and receiving a fourth message including the session history from the CS in the second domain.
Abstract:
Disclosed is a mobile communication system and a method for requesting a disposition notification from each group member for an IM message. In the method, a sender can request desired group members for a disposition notification for an IM (Instant Messaging) message in a group messaging service. To this end, the sender on the transmission side constructs an IM message in such a manner as to include information on the group members designated by the sender, and then transmits the constructed IM message to an IM server. After receiving the IM message from the sender, the IM server generates IM messages corresponding to the group members based on the information included in the received IM message, and then transmits the generated IM messages to the group members, respectively. Accordingly, only the group members that have received the IM messages can generate their own reports, and then transmit the generated reports to the sender. By doing this, the sender can receive the disposition notification only from the desired group members.
Abstract:
A mechanism to enable multiple message threads management in the context of the Converged IP Messaging (CPM) service and in the context of CPM inter-working with SMS is provided. A CPM user can simply start a message-based conversation with another CPM or Short Message Service (SMS) user without explicitly establishing a session beforehand. All messages that belong to a given conversation are displayed in the corresponding conversational view (i.e. window) in the CPM user device, even if the conversation is stopped and restarted at a later time, and even if there are multiple message threads available (currently active or stored) in the CPM device. Message structures and behavior of the CPM system elements to enable the functionalities above as well as a mechanism makes the message threads management possible even between a CPM user and an SMS user are also provided.
Abstract:
A MOS varactor for use in circuits and elements of a millimeter-wave frequency band, which is capable of reducing series resistance and enhancing a Q-factor by using a plurality of island-like gates seated in a well region of a substrate and gate contacts directly over the gates, includes: gate insulating layers arranged at equal intervals in the form of a (n×m) matrix, and a gate electrode placed on the gate insulating layers in a well region of a substrate; a gate contact which contacts the gate electrode; a first metal wire, which is electrically connected to the gate contact; source/drain contacts arranged at equal intervals in a matrix to form apexes of a square centered at the gate electrode and contact a doping region except for the bottom of the gate insulating layers; and a second metal wire, which is electrically connected to the source/drain contacts.
Abstract:
Provided are a color to grayscale image conversion method of converting a color image into a grayscale image while maintaining original features of the color image, and a recording medium storing a program for performing the same. When an original color image is input, a target gradient with the features of the input original color image is acquired, and a global mapping function for converting the original color image into a grayscale image is determined based on the acquired target gradient. Thereafter, the original color image is converted into a grayscale image using the determined global mapping function. Therefore, it is possible to quickly convert a color image into a grayscale image, and to acquire a high-quality grayscale image with features of color difference included in the original color image.