Abstract:
An interference determination apparatus, including a signal receiver to receive a first signal of a primary network and a second signal of a secondary network; a correlator to compute a correlation value of a first cyclic prefix included in the first signal and a correlation value of a second cyclic prefix included in the second signal; and an interference determination unit to determine an interference level or whether the interference occurs between the primary network and the secondary network, using the correlation value of the first cyclic prefix and the correlation value of the second cyclic prefix.
Abstract:
An A/D converter is provided. The A/D converter determines a digital output value according to the resistance of the TMR device, resistance of which changes according to the magnetic field generated by at least one electrode into which current flows according to an analog input signal. Accordingly, an A/D converter to implement high resolution and high speed with low power consumption can be provided.
Abstract translation:提供A / D转换器。 A / D转换器根据TMR器件的电阻确定数字输出值,其电阻根据由电流根据模拟输入信号流动的至少一个电极产生的磁场而变化。 因此,可以提供用于实现低功耗的高分辨率和高速度的A / D转换器。
Abstract:
An analog-to-digital (AD) converter and a voltage detecting device thereof are provided. The AD converter includes at least one voltage detecting device which outputs a signal of a frequency determined based on a magnitude of an input voltage using a resonance frequency of a resonator. The AD converter determines a digital output value depending on the output signal from the voltage detecting device. Therefore, the AD converter can achieve a high resolution and a high speed with far less power consumption.
Abstract:
Embodiments of the present invention may provide a module for detecting a vehicle crash. The module includes a housing mounted to a vehicular frame member at one end portion thereof. The module includes first and second rods housed in the housing. The first rod is contacted to the frame member at one end thereof through the one end portion of the housing. The second rod is contacted to the opposite end of the first rod and being disposed between the first rod and the opposite end portion of the housing. The module includes first and second sensors mounted to the first and second rods respectively for detecting a crash by sequentially measuring stress wave caused by the crash. The first sensor detects a stress wave propagating through the first rod and outputting a signal. The second sensor detects a stress wave propagating through the second rod and outputting a signal. The module includes a biasing member disposed between the second rod and the opposite end portion of the housing for biasing the first and second rods toward the frame member. A magnitude of impedance of the first rod is larger than that of the second rod and the magnitude of impedance of the second rod is larger than that of the biasing member. The module can remarkably reduce the elapsed time required for detecting a crash by measuring a stress wave, which propagates very rapidly through a vehicular frame member.
Abstract:
The method for manufacturing large three-dimensional objects of the present invention comprises the following steps: obtaining a three-dimensional shape data for a three-dimensional target object; converting the three-dimensional shape data into a size needed for manufacturing; transforming the size-converted data into a “shell” data (i.e., data of a hallow target object having a cavity therein); dividing the “shell” data into shell segments of such a size that can be manufactured by a rapid prototyping apparatus; prototyping each of the “shell” segments by a rapid prototyping apparatus to manufacture each of prototyped parts; assembling the prototyped parts to produce a prototype of the target three-dimensional shape object.
Abstract:
Disclosed herein is a multi-cantilever MEMS sensor functioning as a mechanical sensor having a plurality of cantilevers, replacing a conventional DSP based sound source localization algorithm and reducing production cost when the MEMES sensor applied to mass-produced robots, a manufacturing method thereof, a sound source localization apparatus using the multi-cantilever MEMS sensor and a sound source localization method using the sound source localization apparatus. The multi-cantilever MEMS sensor comprises a plurality of cantilevers 100 each of which includes a piezoresistor 20 and a sensing part 30 for sensing a predetermined signal generated according to the piezoresistor 20l; and a terminal T for detecting the signal generated according to the piezoresistor 20, wherein one end of each cantilever is a free end and the other end thereof is a fixed end of each cantilever, the piezoresistor 20 and the sensing part 30 are formed at the fixed end, and the free ends of the plurality of cantilevers 100 have different lengths. A method of manufacturing the multi-cantilever MEMS sensor is provided. Furthermore, a method of using the multi-cantilever MEMS sensor and a sound source localization apparatus are provided.
Abstract:
A power amplifier with automatic switching functions is disclosed. The power amplifier can variably control output power of circuits as all of the circuits are operated when relatively large power is needed, and the circuits are partially turned off when relatively small power is needed, according to magnitude of an envelope signal, such that the circuits can be smoothly and automatically switched so as not to affect operations of the circuit, and to improve efficiency and operation range thereof, as parts of the circuit can be turned off/on depending on magnitudes of output power.
Abstract:
Disclosed herein is a flexible film optical waveguide, which is in flexible film form and includes upper and lower cladding layers, each of which is formed of an organic-inorganic hybrid material, and a core layer provided between the upper and lower cladding layers and formed of an organic-inorganic hybrid material having a refractive index higher than that of the organic-inorganic hybrid material of each of the upper and lower cladding layers. In addition, a method of fabricating such a flexible film optical waveguide is also provided.
Abstract:
Provided is a flash memory, and more particularly, to a method and structure for erasing flash blocks based on back-bias. The method comprises the steps of forming a flash block on a silicon on insulator (SOI) substrate and forming a body-electrode on back side of the silicon on insulator (SOI) substrate.
Abstract:
Disclosed herein is a membraneless micro fuel cell. A cathode fluid and an anode fluid with a low Reynolds number flowing along a cathode channel and an anode channel are formed to have an interface with each other through a micro passageway and to be mixed by only diffusion so that the direct mixing of the cathode fluid and the anode fluid is prevented, making it possible to prevent reactants from being depleted at an electrode surface as well as to increase the efficiency of the fuel cell.