Abstract:
An apparatus for detecting the signals of transmission diversity based on space-time coding is disclosed. The apparatus and method for detecting signals of space-time coding performs linear interpolation and linear filtering to calculate the channel estimate of each transmission symbol from the channel estimate of each slot, thus providing the correct channel estimate even in a channel with considerable fluctuation. Further, the output control with estimation of SIR only passes a proper output of the demodulating and detecting circuit to improve the signal to noise ratio, maintaining enough communication quality even in a bad communication environment.
Abstract:
An ion implantation apparatus for use in manufacturing semiconductors includes a loopback device connected to a bias ring for a Faraday cup. The loopback device detects whether a current flows through the bias ring and generates an interlock signal to be supplied through an interface to a controller. In response to the interlock signal, the controller stops an implantation operation of the apparatus, and a driver circuit drives a warning device in response to the interlock signal.
Abstract:
A memory system, comprising a flash memory comprising multiple memory blocks, and a controller configured to erase each of the memory blocks using multiple steps. The controller stores, for each of the memory blocks, metadata indicating which of the multiple steps have been completed, and erases each of the memory blocks based on the stored metadata.
Abstract:
The present disclosure relates to an airburst simulation system and method. The airburst simulation system includes a laser emitting unit to emit laser beam to an airburst aiming position, preset above a target hidden behind an obstacle, such that a warhead is airbursted to shoot the target, a laser detecting unit mounted onto the target to detect an arrival of the laser beam above the target, and a determining unit to measure a distance between the airburst aiming position and an arrival position of the laser detected by the laser detecting unit, and determine whether or not the target has been shot based on the distance. This allows for a simulated engagement using an airburst apparatus, with no harm to human bodies by virtue of the use of laser.
Abstract:
Disclosed is a percussion lock installed on a firearm, and more particularly, to a percussion lock wherein the hammer is operated through a link member so that operation of the firearm is possible in a small area, making it possible to design a firearm flexibly and reducing the volume and weight of the firearm. According to the present invention, the percussion lock installed on a firearm to fire a bullet by hitting a firing pin comprises a housing mounted in fixed state to a firearm, a hammer installed on the upper part of the housing for hitting a firing pin, a link member linking the hammer and the housing so that the hammer moves on a curve maintaining horizontal state, and an elastic member supporting the link member with elastic force.
Abstract:
A data storage device includes a storage unit, and a controller configured to control the storage unit, wherein the controller is configured to manage a mapping between a logical address space and a virtual address space of the storage unit, virtual address space of the storage unit being variable.
Abstract:
The present invention relates to a method and system for detecting a keyword whose number of being inputted from a user terminal is rapidly increased, and more particularly, to a method and system which generate rapid increase standard quotient by using the average and standard deviation for each keyword and compare the rapid increase standard quotient with measured input number in order to detect a keyword whose input number is rapidly increased.
Abstract:
A method and system for storing information on a search result selected by a user with respect to a predetermined query, reflecting the user's preference by utilizing the information when the user inputs an identical query and requests a search, and providing a personalized search result in which user preferences are reflected. More particularly, a personalized search method and system utilizing favorites of a web browser in which a personalized search result is provided to each user by utilizing information on a website that the user bookmarked as the user's favorites is provided. According to the present invention, there is provided a personalized search service method and system which can provide a user with a personalized search service, even when user information is not stored in a search server and also, even when the user does not log in.
Abstract:
Methods and systems for providing company call service in wireless and wired integrated network are provided. For example, a call between an employee's wireless device and a client's device can be connected while indicating the employee's wired telephone number as a caller's telephone number. When an employee is receiving a call, one example is to call an employee's wired device first, and if there is no response, employee's wireless device may be called subsequently. In another example, employee's wired and wireless device may be called simultaneously.