Browsing by Issue Date, starting with "2009-06-16"

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智慧型語音純化系統及其方法
(2009-06-16)
胡竹生
;
楊佳興
本發明係提供一種智慧型語音純化系統及其方法,其係利用智慧型語音純化系統純化受干擾之語音訊號與消除回音的干擾。智慧型語音純化包括以USB為傳輸介面的數位麥克風陣列語音擷取系統與語音純化技術。相較於先前技術,本發明能增加整體電路的抗雜訊能力並縮小電路體積。另外,本發明採用常見的USB傳輸介面,藉此提升語音擷取系統的方便性與擴充性。在語音純化系統方面,本發明能適用於各種不同干擾源的吵雜環境並且不需考慮麥克風匹配問題以降低製作成本。
具自我感知之適應性功率控制系統與判別電路運作狀態的方法
(2009-06-16)
謝維致
;
黃威
本發明提供一種具有自我感知之適應性功率控制系統與判別電路運作狀態的方法,其中該控制系統至少包含多模式功率閘網路、電流監測轉譯器、可變門檻比較器、時脈長度偵測器及雙向平移暫存器。該多模式功率閘網路係由N通道電晶體或P通道電晶體組成,經由監測搭載電路所汲取之電流量,可判定電路現處於運算亦或穩定狀態,因此不需使用電路傳輸延遲匹配電路,在配合其它週邊電路之情況下,供給電流可被下調至最低可接受的程度,使電路盡量用掉所有可用的時脈長度。此外,本發明對於頻率變化也具有自我感知調變功能,故可使電路在各種頻率下之功率消耗為最低,以達最佳能源效益。
多模多平行度資料交換方法及其裝置
(2009-06-16)
陸志豪
;
林建青
;
李鎮宜
;
張錫嘉
;
許雅三
本發明係提出一種多模多平行度資料交換方法及其裝置,其係可應用於查核節點運算器或是一位元節點運算器。本發明係包含複製部份或全部之原始位移資料作為複製位移資料,並將原始位移資料和複製位移資料組成一資料區塊;並以此資料區塊為單位,對此資料區塊進行位移,以便自位移後之資料區塊中取出位移資料。本發明係使用一個最大尺寸位移電路與複製部份的資料,即可支援不同位移尺寸的規格需求,以最小複雜度完成多種尺寸位移器之功能。
Excitation properties of the H3 defect center in diamond: A theoretical study
(2009-06-16)
Lin, Chih-Kai
;
Chang, Huan-Cheng
;
Hayashi, M.
;
Lin, S. H.
;
應用化學系
Theoretical calculations on electronic excitation energies and absorption cross sections of the H3 defect center in diamond were performed. We constructed model clusters with up to 180 atoms to imitate the local environment of the defect center and conducted first-principle calculations. TD-DFT predicted most accurately vertical excitation energy, whereas TD-HF and CIS provided rough estimations for one- and two-photon absorption cross sections. It was found that a model cluster with a diameter larger than similar to 1.0 nm is required, while relatively low-cost level of theory and basis set are sufficient for characterizing the excitation properties. (c) 2009 Elsevier B.V. All rights reserved.
壓縮反應時間之畫面控制訊號產生方法
(2009-06-16)
林芳正
;
黃乙白
;
魏景明
;
謝漢萍
本發明為一種壓縮反應時間之畫面控制訊號產生方法,其包括下列步驟:分析輸入影像訊號;產生畫面之第一參考液晶控制訊號;設定第二液晶控制訊號範圍,並產生第二參考液晶控制訊號;根據第一參考液晶控制訊號及第二參考液晶控制訊號產生第二背光控制訊號;以及根據第二背光控制訊號產生每一畫素之第二液晶控制訊號。藉由將第二液晶控制訊號控制在第二液晶控制訊號範圍中,以縮短液晶的反應時間,並提升液晶顯示器之影像品質。
在網路流量中分類所屬應用程式之方法
(2009-06-16)
林盈達
;
彭偉豪
;
賴源正
;
呂俊男
;
陳一瑋
本發明提出了一種網路流量分類方法,其利用網路傳輸層行為特徵以及應用程式連線封包大小分佈與結合埠關聯特性,做為辨認流量中所屬應用程式之依據。利用應用程式在傳輸層中行為計算出的向量値與已知的代表特徵點比對辨認,並且利用埠關聯的特性一併將與應用程式相關的連線辨識出來。
Molecular Dynamics insight into the role of tertiary (foldon) interactions on unfolding in Cytochrome c
(2009-06-16)
Tsai, M. Y.
;
Morozov, A. N.
;
Chu, K. Y.
;
Lin, S. H.
;
交大名義發表
Hydrogen exchange experiments reveal the existence of a foldon structure in Cytochrome c. We performed constant temperature Molecular Dynamics simulations of Cytochrome c to investigate the macroscopic behavior of the foldons. The results showed that the tertiary interactions in Cytochrome c play an important role in the stabilization of the N- and C-terminal helices. We also observed the macroscopic behavior of a black foldon in the process of thermal unfolding. Our results support that Cytochrome c folding occurs in accordance with the classical pathway concept of Levinthal. (c) 2009 Elsevier B.V. All rights reserved.
顯示色光、圖形與數字的指示燈號
(2009-06-16)
羅志偉
一種利用多色發光二極體的指示燈號,指示燈號中使用的圖形,搭配色光的變化與計時顯示的數字,將顏色、圖形與數字整合一起,能夠運用於一般運輸系統、公共場所之指示、警告或管制之用,並且便利具有顏色辨識障礙的人判讀指示燈號。
Optical frequency doubling for multichannel radio-over-fibre system based on integrated phase modulator and silicon coupled microring notch filter
(2009-06-18)
Xu, L.
;
Li, C.
;
Tsang, H. K.
;
Chow, C. W.
;
光電工程學系
An integrated optical millimetre-wave signal generator based on a coupled microring resonator, which doubles the frequency of the electrical signal driving a phase modulator, is proposed and experimentally demonstrated for future radio-over-fibre systems. The coupled microring notch filter was fabricated on a silicon-on-insulator wafer. A high extinction ratio optical millimetre-wave signal was obtained.
SELF-AWARE ADAPTIVE POWER CONTROL SYSTEM AND A METHOD FOR DETERMINING THE CIRCUIT STATE
(2009-06-18)
HSIEH, Wei-Chih
;
Hwang, Wei
The present invention provides a self-aware power control system and a method for determining the circuit state. The self-aware adaptive power control architecture comprises of a multi-mode power gating network, a current monitoring translator, a variable threshold comparator, a slack detector, and a bi-directional shift register. The multi-mode power gating network controls the amount of supply current and hence the circuit speed. The power gating network can be composed of either N-type MOSFETs for virtual ground insertion or P-type MOSFETs for virtual supply insertion. The number of MOSFETs in the multi-mode power gating network can be configured according to the supply range and step difference of the supply current. Then, by monitoring the current characteristics drained by target circuit, the circuit state can be determined. No delay matching circuit is required. Together with other peripherals, the supply current can be down controlled to a minimum acceptable level. The circuit will use up all available slack. The smaller current implies lower power consumption as well. Furthermore, the present invention is capable of self adaptation to frequency change. To summarize, the present invention can make the circuit consume least power under various frequency achieving best power efficiency.
10 GHz dual-conversion low-IF downconverter with microwave and analogue quadrature
(2009-06-18)
Syu, J. -S.
;
Meng, C.
;
Teng, Y. -H.
;
電信工程研究所
;
Institute of Communications Engineering
A 10 GHz dual-conversion low-IF downconverter using 0.18-mm CMOS technology is demonstrated. The high-frequency quadrature RF and LO(1) signals are generated by broadside-coupled quadrature couplers while a two-section polyphase filter is utilised for the low-frequency LO(2) quadrature signal generation. As a result, the demonstrated downconverter achieves a conversion gain of 7 dB, IP(1dB) of -16 dBm, IIP(3) of 25 dBm and noise figure of 26 dB at a 1.8 V supply. The image-rejection ratio of the first/second image signal is 33/42 dB for IF frequency ranging from 10 to 60 MHz, respectively.
Quantum Chemical Modeling of Photoabsorption Properties of Two- and Three-Nitrogen Vacancy Point Defects in Diamond
(2009-06-18)
Zyubin, A. S.
;
Mebel, A. M.
;
Hayashi, M.
;
Chang, H. C.
;
Lin, S. H.
Quantum chemical calculations of the geometric and electronic structures and vertical transition energies for several low-lying excited states of the neutral and negatively charged vacancy-related point defects in diamond containing two and three nitrogen atoms (N(2)V(0), N(2)V(-), and N(3)V(0)) have been performed employing various theoretical methods (time-dependent density functional theory, equation-of-motion coupled cluster, and multireference perturbation theory) and different basis sets and using C(21)H(28), C(35)H(36), and C(51)H(52) finite model clusters. In the;round states, the vacancy-related atoms are found to be shifted away from the vacancy center by similar to 0.1 angstrom, whereas the positions of atoms from the second layer around them vacancy remain nearly unchanged, indicating a local character of geometry relaxation due to defects. The lowest excited states are formed with participation of the stretched (N(2)V) or broken (N(3)V) C-C bond and nonbonding combinations of nitrogen lone pairs as donors, with the C-C antibonding molecular orbital (MO) in N(2)V(0), broken C-C bond in N(3)V(0), and diffuse vacancy-related MOs serving as acceptors. Normally, the first excited states have a valence character, but the diffuse states are rather close in energy, especially for N(3)V(0) (2(2)A(1) and 1(2)E excited states). The first optically active excitation in the N(2)V(0) defect with the calculated energy of similar to 2.6 eV (in close agreement with the experiment) is formed by the electronic transition from the stretched C-C bond to the antibonding C-C MO, with an additional contribution from the combination of nitrogen lone pairs. For the negatively charged N(2)V(-) system, the lowest excitation to the 1(2)A(1) state is predicted to occur from the singly occupied antibonding b(1) MO to the empty diffuse a(1) orbital, but the CASPT2 calculated excitation energy, similar to 0.9 eV, underestimates the experimental zero phonon line observed at 1.26 eV. The lowest excited states of N(3)V(0), 2(2)A(1), and 1(2)E correspond to transitions from the singly occupied MO (SOMO) to the diffuse lowest vacant orbital and from the nonbonding combination of nitrogen lone pairs to SOMO, respectively, and have similar energies of about 3.1-3.3 eV, in agreement with the experimental photoabsorption band maximum at similar to 3 eV.
Supramolecular self-assembly through inclusion complex formation between poly(ethylene oxide-b-N-isopropylacrylamide) block copolymer and alpha-cyclodextrin
(2009-06-19)
Tu, Cheng-Wei
;
Kuo, Shiao-Wei
;
Chang, Feng-Chih
;
應用化學系
;
Department of Applied Chemistry
A well-defined poly(ethylene oxide-block-N-isopropylacrylamide) (PEO-b-PNIPAM) diblock copolymer was synthesized by atom transfer radical polymerization and formed the inclusion complexes (ICs) after selective threading of the PEO segment of the block copolymer through the cavities of alpha-cyclodextrin (alpha-CD) units. The formation of the alpha-CD/PEO ICs between alpha-CD and PEO segment of the PEO-b-PNIPAM transformed the system from its original random coil conformation into a rod/coil-like structure. The stacking of the alpha-CD/PEO ICs and phase separation within the alpha-CD/PEO-b-PNIPAM IC resulted in the self-assembly of long-range-ordered lamellar structure exhibiting alternating layers of (i) alpha-CD/PEO ICs with hexagonally packed plates and (ii) amorphous phase of unincluded PEO/PNIPAM with brush conformation. (C) 2009 Elsevier Ltd. All rights reserved.
Vibration analysis of rectangular plates with side cracks via the Ritz method
(2009-06-19)
Huang, C. S.
;
Leissa, A. W.
;
土木工程學系
;
Department of Civil Engineering
This analysis deals with Free vibrations of a rectangular plate with a side crack by using the famous Ritz method with special displacement functions. To appropriately describe the stress singularities at the crack tip and show the discontinuities of displacement and slope crossing the crack, previously used corner functions, as well as a new set of functions, are added to the well known admissible functions consisting of regular polynomials. Comprehensive convergence studies oil the vibrations Of simply Supported rectangular plates with horizontal cracks at the symmetry axis are carried out and show that both the corner functions and the proposed new set of functions indeed accelerate the convergence of numerical solutions. Furthermore. the new Set Of functions is found to be particularly capable in improving convergence of Solutions, especially when there is a large crack. Convergence studies also demonstrate that the present approach gives more accurate results than previously published approaches using the Ritz method combined with various domain composition techniques. Finally, the present approach is applied to investigate the effects of location, length and orientation of side cracks oil the free vibration frequencies and mode shapes of simply supported and completely free square plates with side cracks. including cracks which are not along a symmetry axis, are skewed. Most of the results shown are novel. (C) 2009 Elsevier Ltd. All rights reserved.
Liquid crystal panel for high efficiency barrier type autostereoscopic three-dimensional displays
(2009-06-20)
Chen, Cheng-Huan
;
Huang, Yi-Pai
;
Chuang, Shang-Chih
;
Wu, Chi-Lin
;
Shieh, Han-Ping D.
An autostereoscopic display with parallax barrier attached onto a liquid crystal panel suffers from the trade-off between brightness and crosstalk. One approach for making improvement by modifying the layout of light blocking components, such as thin film transistor, storage capacitor, and protrusion, in the liquid crystal pixel has been proposed. Ray tracing simulation shows that the aperture of the slanted barrier can be significantly increased, hence increasing efficiency, while keeping the same crosstalk level if those light blocking components can be shifted to the corner of the pixel. A six-view 2.83 in. (7.19 cm) prototype has shown improvement on both brightness and crosstalk compared to its counterpart using a traditional liquid crystal panel, which demonstrates an effective approach for a high-efficiency barrier-type autostereoscopic 3D display with a liquid crystal panel. (C) 2009 Optical Society of America
便當志工散播關懷散播愛
(2009-06-21)
梁素茵
;
Department of Communication and Technology
;
傳播與科技學系
便當志工
大專排球大改制各校觀望
(2009-06-21)
陳碩峰
;
Department of Communication and Technology
;
傳播與科技學系
123
發光二極體裝置以及其製造方法
(2009-06-21)
鄭裕國
;
陳勇智
;
謝漢萍
本發明提供一種發光二極體裝置及其製造方法。根據本發明之發光二極體裝置能用以穩固地安裝至少一發光二極體,並且維持該至少一發光二極體之電性導通。此外,該發光二極體裝置包含一基板、一容置結構、一固定結構以及複數個電極。該容置結構形成於該基板上,用以容納該固定結構以及該至少一發光二極體。該固定結構,設置於該容置結構中,用以固定該至少一發光二極體。該複數個電極係用以將該至少一發光二極體電連接至一電源及/或一信號源。更重要地,該容置結構係一插座狀結構或一凹槽狀結構。
The Pancakes 稚氣好聲音
(2009-06-21)
林麗珊
;
Department of Communication and Technology
;
傳播與科技學系
.
當web2.0遇上金盾工程
(2009-06-21)
邵奕儒
;
Department of Communication and Technology
;
傳播與科技學系
金盾