Abstract:
PURPOSE: Interpretation system and method of the vibration and noise transfer paths are provided to accurately interpret the property of the transfer path and the definition of the noise and vibration sources of the measurement target using the multi-dimensional spectral interpretation technique. CONSTITUTION: An interpretation system of the vibration and noise transfer paths comprises an auto-power spectrum and cross-power spectrum calculating unit(300), a coherence calculating unit(400), a partial and multiple coherence calculating unit(600) and a coherence output spectrum calculating unit(800). The auto-power spectrum and cross-power spectrum calculating unit calculates the auto power spectrum and the cross-power spectrum of the vibration and noise of the target. The coherence calculating unit calculates the linear dependence between the pressure and the output of the vibration and the noise. The partial and multiple coherence calculating unit eliminates the correlation between the input and the output of the vibration and the noise. The partial and multiple coherence calculating unit calculate a partial and a multiple coherence functions. The coherence output spectrum calculating unit calculates the coherence output spectrum of the noise and the vibration. The coherence output spectrum calculating unit determines the coherence rank.
Abstract:
PURPOSE: A cholesteric liquid crystal display device and a manufacturing method thereof are provided to manufacture a lot of cholesteric liquid crystal display devices by reducing material costs and simplifying processes. CONSTITUTION: First and second substrates(110,120) are separated each other. Different color filter layers correspond to sub pixels on the second substrate. A cholesteric liquid crystal layer(130) is placed between the first and second substrates. The cholesteric liquid crystal layer comprises micro liquid crystal layers of different colors corresponding to one sub pixel. The color filter layers comprise red, green, and blue color filter layers corresponding to sub pixels.
Abstract:
PURPOSE: A cholesteric liquid crystal display and a method for manufacturing the same are provided to implement superior color quality and have a simplified structure by forming a cholesteric liquid crystal display layer as a single layer. CONSTITUTION: A cholesteric liquid crystal layer(140) comprises a first sub pixel unit(143), a second sub pixel unit(145), and a third sub pixel unit(147). The sub pixel units form standard pixels. The sub pixel units are repetitively arranged in the plane of the display device(100). Partition walls(141) dividing sub pixel units are placed between two transparent substrates. The partition walls maintain liquid crystal alignment or a gap regularly.
Abstract:
PURPOSE: A real time performance assessment and improvement method and a device thereof are provided to efficiently improve a speaker system. CONSTITUTION: A real time performance assessment and improvement device of a speaker system comprises a microphone unit (21), a signal measuring unit (22), a signal analyzing unit (23) and a screen configuring unit (24). The microphone unit is installed at a listening expectation position in a listening space and measures an output signal of the speaker system. The signal measuring unit receives an input signal from the speaker system and receives the output signal from the microphone unit. The signal analyzing unit analyzes and corrects the time delay of the output signal from relation between the output signal and the input signal and performs frequency domain analysis about the output signal in which the time delay is corrected and the input signal. The screen configuring unit configures a screen and indicates the result of the frequency domain analysis. [Reference numerals] (12) Signal playing unit; (14) Signal amplifying unit; (22) Signal measuring unit; (23) Signal analyzing unit; (24) Screen configuring unit; (25) Filter planning and revising unit; (26) Verification unit for the validity of sound source selection
Abstract:
본 발명은 진동 및 소음 전달경로 해석 시스템과 진동 및 소음 전달경로 해석 방법에 대한 것으로서, 특히 다차원 스펙트럼 해석법을 이용한 진동 및 소음 전달경로 해석 시스템과 진동 및 소음 전달경로 해석 방법에 관한 것이다. 본 발명은 다차원 스펙트럼 해석법을 이용하여 다입력계 측정 대상의 소음 및 진동원 규명과 전달경로 특성 해석을 보다 정확하게 할 수 있는 진동 및 소음 전달경로 해석 시스템과 진동 및 소음 전달경로 해석 방법을 제공한다. 진동, 소음, 전달, 경로, 다차원, 스펙트럼, 해석