Abstract:
Disclosed herein are an automatic door opening/closing apparatus to automatically open or close a door without applying any manual force to the door, and a refrigerator having the same. The automatic door opening/closing apparatus devised to automatically open or close a sliding door that is mounted, in a drawer manner, to a refrigerator body, includes a drive device coupled to the sliding door to automatically open or close the sliding door with respect to the refrigerator body, an input part to receive an user input and to operate the drive device based on the user input, a sensing part to sense an open or closed state of the sliding door, and a controller to operate the drive device based on signals from the input part and signals from the sensing part.
Abstract:
An apparatus for transmitting a pseudollite signal so that a navigation signal is transmitted includes: at least four pseudollite configured to generate and output pseudollite codes for navigation; antennas configured to transmit signals outputted by the pseudollite corresponding to the antennas, respectively; and a single synchronization clock unit configured to provide each of the pseudollites with a synchronization clock.
Abstract:
A cholesteric liquid crystal display device includes: a plurality of pixel units arranged two-dimensionally between two transparent substrates. Each of the plurality of pixel units includes a cholesteric liquid crystal layer having a single-layer structure. The cholesteric liquid crystal layer includes: a liquid crystal molecule; a chiral dopant; and an optically polymerizable polymer. The chiral dopant is mixed with the liquid crystal molecule to form a cholesteric phase and has a solubility that varies with respect to the liquid crystal molecule according to temperature. The optically polymerizable polymer is cured to fix a helix pitch of the cholesteric phase.
Abstract:
Methods and apparatus are provided for implicit block segmentation in video encoding and decoding. An apparatus includes an encoder for encoding at least a portion of a picture using a block segmentation process performed on a pixel difference of at least two predictors for the portion. The encoder implicitly signals block segmentation information for use by a decoder to decode the portion.
Abstract:
A method and system for eliminating inefficiency caused by active-sleep mode switching in power saving through a sleep mode in a wireless mesh network are provided. The sleep mode is controlled using a virtual Transmission Opportunity (vTXOP) according to TXOP information of a one-hop neighbor node. The sleep mode control takes into account a wireless mesh network environment and leads to power saving.
Abstract:
A method of performing a handover from a Wideband Code Division Multiple Access (WCDMA) system to a Code Division Multiple Access (CDMA) system in a multi-mode terminal having a WCDMA module and a CDMA module is disclosed. The method includes determining whether a handover to the CDMA system is necessary during a call through a WCDMA system; acquiring a pilot signal from the CDMA system by activating the CDMA module if it is determined that the handover to the CDMA system is necessary; receiving a sync signal if the pilot signal from the CDMA system is acquired; transmitting information for handover to the WCDMA system through the WCDMA module; allowing the CDMA module to enter a CDMA traffic state using handover information if the handover information is received from the WCDMA system through WCDMA module; and releasing a traffic state of WCDMA module.
Abstract:
Provided is a method for controlling an attitude of a satellite using target track approximation. The method includes the steps of: a) receiving coordinate information of at least one of target areas; b) generating a target track by approximating a track of a satellite based on the received coordinate information; and c) detecting a location of the satellite on a current track, calculating an attitude angle of the satellite for the target track using the location of the satellite and the location of the target area, and applying the calculated attitude angle of the satellite to control the attitude of the satellite.
Abstract:
Provided are an apparatus and method for measuring an antenna gain. The apparatus includes an antenna gain-to-noise-temperature (G/T) ratio calculator for calculating a G/T ratio using a reception noise power measured while an antenna is tracking the sun, a noise temperature measurer for measuring a noise temperature when a signal is transmitted or received through the antenna, and an antenna gain calculator for calculating an antenna gain using the calculated G/T ratio and the measured noise temperature. Thus, it is possible to easily measure the antenna gain of a ground station without a reference antenna or a satellite-mounted device capable of functioning as a reference antenna.
Abstract:
A method and apparatus method of calculating attachment location and thickness of a supplement pad to be attached to a member includes a first step of receiving information on flatness measurement points from a unified management server which have previously been calculated during design of the member, a second step of calculating a three-dimensional coordinate at each of the flatness measurement points on the member, and a third step of calculating the attachment location and thickness of the supplement pad to be attached to the member on the basis of the calculated three-dimensional coordinates. The second step includes bringing an indoor GPS sensor into contact with the member at each of the flatness measurement points, and calculating the three-dimensional coordinate on an end of the indoor GPS sensor, which is in contact with the member, through the use of another indoor GPS installed on the member
Abstract:
A three-dimensional measurement system using an IGPS includes a rescale bar having linear scales thereon, a linear encoder for measuring an absolute length within which the linear encoder moves on the rescale bar, a plurality of optical transmitters that radiates pan beams, and a vector bar having one end attached to the linear encoder, and having a receiver to detect the pan beams radiated from the optical transmitters, the vector bar acquiring coordinates of two points where the vector bar moves by using the receiver, and measuring a relative length from the coordinates. A ratio between the absolute length and the relative length is applied in rescaling an actual distance between two positions to be measured.