摘要:
An assisted global positioning system (AGPS) system capable of determining a position of a terminal more quickly and accurately by transceiving AGPS data utilizing a public radio paging network, which can transmit a large quantity of data at a very high speed. The present invention provides a mobile terminal with AGPS data through a public radio paging network, and the mobile terminal obtains a GPS signal more quickly by means of the AGPS data provided through the public radio paging network. Accordingly, the present invention reduces the time required for determining a terminal position using the GPS signal.
摘要:
Disclosed is a system and a method for providing regional information using a radio paging network. The method includes the steps of: classifying an area into unit regions for providing regional information, assigning radio paging numbers different from each other according to the unit regions, and then constructing a radio paging number management database for managing the radio paging numbers according to the unit regions; storing the database in a regional information providing system and a plurality of information receiving apparatuses; detecting the respective radio paging numbers corresponding to each position of the information receiving apparatuses from the database; storing the detected radio paging numbers in respective corresponding information receiving apparatuses; when regional information of a predetermined region is generated, detecting a radio paging number the predetermined region corresponding to the regional information from the database; transmitting a radio paging message to the information receiving apparatuses through a radio paging network, the radio paging message including the radio paging number and the corresponding regional information; the information receiving apparatuses receiving only a radio paging message including the same radio paging number as that stored in advance; and the information receiving apparatuses outputting the regional information included in the received radio paging message.
摘要:
A method for manufacturing a capacitor for a semiconductor device, that method including forming a first insulating layer having a contact hole on a semiconductor substrate and forming a diffusion barrier layer in the contact hole, with the diffusion barrier layer electrically connecting to the semiconductor substrate. Forming a second insulating layer and a third insulating layer sequentially on the first insulating layer, and providing a hole in the second insulating layer and third insulating layer to expose the diffusion barrier layer. Forming a conductive layer on the semiconductor substrate such that the conductive layer covers the inner wall of the hole in the second insulating layer and the third insulating layer. Forming an insulating fill layer that fills the remainder of the hole containing the conductive layer. Removing upper portions of the fill layer until the third insulating layer is exposed but a portion of the fill layer remains in the hole. Removing the third insulating layer to expose the second insulating layer and forming a dielectric layer on the semiconductor substrate, such that the dielectric layer covers remaining portions of the fill insulating layer, the second insulating layer, and the conductive layer, and forming a plate node on the dielectric layer.
摘要:
An apparatus and method of charging and housing of an unmanned vertical take-off and landing (VTOL) aircraft is disclosed. The apparatus includes an accommodator to accommodate an aircraft, a landing platform on which the aircraft lands, a housing portion to monitor state data by housing or charging the aircraft, and a sensor to assist in landing of the aircraft by allowing the aircraft to communicate with the apparatus. The apparatus enhances operational efficiency by reducing a travel time of the aircraft.
摘要:
Provided are a system and method for determining a position based on portable Internet in a portable Internet system. The method includes receiving, by the terminal, information on neighbor base stations (BSs) from a main BS, scanning the neighbor BSs while measuring Received Signal Strength Indicators (RSSIs) for the main BS and the neighbor BSs, determining whether the RSSI for the main BS is greater than a preset threshold value, and deciding, as a position of the terminal, a position associated with an IDentification (ID) of the main BS when the RSSI is greater than the threshold value.
摘要:
A method and a terminal for providing a route in a navigation system using a satellite image are provided. The terminal includes a route calculation unit for calculating a route from a current location to a destination when a user inputs the destination, a satellite image requesting unit for requesting a satellite image server for satellite images corresponding to locations on the route and for downloading the requested satellite images, a satellite image storage unit for storing the downloaded satellite images, and a controller for retrieving a satellite image corresponding to the current location from the satellite image storage unit and for displaying the retrieved satellite image simultaneously while downloading the satellite images corresponding to the locations on the route.
摘要:
An apparatus and method for estimating a step length of a user are provided. The apparatus and method use a step length estimation algorithm, e.g. a step length estimation parameter coefficient, according to a movement state of a user, i.e. whether the movement state is a walking state or a running state. The movement state of the user is determined on the basis of an acceleration variance value of an acceleration signal output from an accelerometer. Accordingly, the apparatus and method prevent errors in step length determinations.
摘要:
Provided is a method of dynamically reallocating a thread stack in a multi-threaded operating system, and more particularly, a method of dynamically allocating a thread stack of a multi-threaded operating system in an embedded system for wireless sensor nodes. The method includes the steps of: measuring sizes of data and non-data sections of a stack with respect to each thread; determining a new size of the non-data section of each stack based on the size of the data section of the stack measured with respect to each thread; and adjusting the size of the non-data section of each stack to the determined new size. According to the method, even without the source code analysis, an amount of memory spaces to be used can be reduced compared to that of a conventional static stack allocation method.