摘要:
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.
摘要:
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.
摘要:
Provided is a system and method for providing vehicle parking information using a navigation satellite. The system includes: a monitoring unit for photographing an image of a vehicle parking space and transmitting the image to a parking space checking unit; the parking space checking unit for checking a vacant parking space based on the transmitted vehicle parking space image and transmitting vacant parking space acquisition information to a location information computing unit; and the location information computing unit for creating and transmitting location information of the vacant parking space, which is vehicle parking information, to a navigation satellite based on own location information acquired based on navigation information transmitted from an external navigation satellite and the transmitted vacant parking space acquisition information.
摘要:
An internal voltage generator includes a control section and a switchable internal voltage generating circuit. The control section generates a control signal in response to a bank activation command and a bank activation signal for enabling memory banks. The internal voltage generating circuit receives a reference voltage, and responds to the control signal to output an internal voltage equal to the reference voltage. The control signal is enabled when the bank activation command and the bank activation signal are concurrently enabled. The bank activation signal is generated in response to a partial array self refresh (PASR) signal. The internal voltage may be supplied to banks selected by the bank PASR signal, thereby enabling refresh operations in the entire bank, or an internal voltage adequate to partially enable refresh operations in all the banks may be supplied. Thus, unnecessary power consumption may be effectively controlled.
摘要:
In a display apparatus, a spacer maintaining a cell gap between a first substrate and a second substrate is integrally formed to extend from the first substrate, and an adhesive is formed on an upper face of the spacer. The upper face of the spacer is attached to the second substrate by means of the adhesive. An excess adhesive receiving space is defined in and/or above the upper face of the spacer to receive excess amounts of the adhesive that are extruded from between the spacer and the second substrate when the first and second substrates are press joined to each other.
摘要:
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.
摘要:
The present invention relates to an evaporator for an air conditioner of a vehicle, and the major object of the present invention is to provide the evaporator which is capable of decreasing the whole dimension of an evaporator and enhancing a heat exchange performance. To achieve the above objects, an evaporator includes an upper and lower header units comprising a tank member, a partition member, a header plate, an intermediate baffle, a finishing baffle; and a plurality of tubes comprising a front tube portion, a rear tube portion, a connection tube portion; and a wrinkle fin.
摘要:
An apparatus, method and system are provided for routing a broadcast data frame in a mesh network with multiple mesh portals. In the mesh network, every mesh point selects and registers its default mesh portal. A mesh portal enters its address in a destination address field of a broadcast data frame received from outside of the mesh network and broadcasts the data frame to inside of the mesh network. The mesh point processes a received broadcast data frame relating to its registered mesh portal, thereby preventing the broadcast data frame from being redundantly transmitted in the mesh network.
摘要:
Provided is a method for transmitting beacon timing information from a transmission node in a wireless Local Area Network (LAN) mesh network. In the method, each of a plurality of nodes transmits a beacon signal with its unique offset within a beacon signal transmission time period and the transmission node periodically transmits beacon timing information including a first unique offset within the beacon signal transmission time period. The transmission node sets a second offset different from the first offset and transmits probe beacon timing information including the first offset and the second offset.
摘要:
A semiconductor device having a self-aligned gate conductive layer and a method of fabricating the same are disclosed. In embodiments of the present invention, a plurality of field isolation patterns are formed on a semiconductor substrate to define a plurality of active regions in the semiconductor substrate. The density of the field isolation patterns is then increased by, for example, a thermal annealing process. A plurality of gate insulation patterns are then formed on respective of the active regions. A plurality of first conductive patterns are then formed on respective of the gate insulation patterns.