基于AL320C和AMOLED的视频信号转换与显示设计

设计一种有机电致发光显示(OLED)的驱动控制电路,实现320×240×RGB像素点全彩色视频图像显示。本文采用AL320C视频解码与显示控制芯片,在获得视频信号的同时,还可以获得控制信号,简化了OLED显示屏的驱动控制难度。本设计电路简单、成本低,实验表明显示效果良好,为各种便携式系统显示前端的设计提供参考。     

6.5万彩色显示PM-OLED控制与驱动芯片

为了支持并利用有机发光二极管(OLED)显示技术,设计了一种适用于96×64无源OLED(PM-OLED)的显示控制与驱动芯片。该芯片可以实现6.5万彩色显示和256级对比度调节,驱动方法采用了脉冲幅度调制(PAM)。芯片不但集成了数字和模拟电路,而且兼容高电压和低电压同时工作。测试结果表明:在低压电源为3V、高压电源为12V的情况下,当列驱动单元输出电流为100μA时,驱动电路和显示屏的整体模块功耗约为770mW,所设计的控制与驱动芯片能够正确显示彩色图像。     

6.5万彩色显示PM-OLED控制与驱动芯片

为了支持并利用有机发光二极管(OLED)显示技术,设计一种适用于96×64无源OLED(PM-OLED)的显示控制与驱动芯片。该芯片可以实现6.5万彩色显示和256级对比度调节,驱动方法采用了脉冲幅度调制(PAM)。芯片不但集成了数字和模拟电路,而且兼容高电压和低电压同时工作。测试结果表明:在低压电源为3 V、高压电源为12 V的情况下,当列驱动单元输出电流为100μA时,驱动电路和显示屏的整体模块功耗约为770 mW,所设计的控制与驱动芯片能够正确显示彩色图像。     

基于FPGA的LED显示屏控制系统的设计与实现

根据LED显示屏的工作原理,提出了一种基于FPGA的大屏幕LED图文显示屏控制系统设计方案。系统采用移位芯片74HC595构建驱动电路,通过串行方式输出驱动信号,利用FPGA构建核心控制电路,采用Verilog HDL语言编写程序,完成显示汉字数据的读出,按照串行方式产生行、列扫描信号和控制信号,动态扫描并驱动LED显示屏。实验测试结果表明:系统可以实现汉字滚动显示,整个系统外围电路简单,易于扩展。     

基于亚阈值技术的AM-OLED驱动电路研究

有机电致发光二极管(OLED)作为新一代显示技术,将来极有可能取代LCD.OLED的驱动电路也成为研究热点.在已有有源阵列OLED(AM-OLED)驱动技术的基础上,提出一种结构较为简单的基于亚阈值技术的栅压控制OLED有源驱动电路,经过HSPICE仿真,该电路较好解决了工作于饱和区的有源驱动电路所引起的发光亮度非线性...     

640×512 InGaAs探测器低噪声采集系统设计

针对640×512 InGaAs探测器工作原理和输出信号特点,从低噪声角度出发,设计了由探测器驱动电路、信号缓冲电路、单端转差分电路、差分放大电路、模数转换电路、FPGA时序控制电路构成的InGaAs探测器低噪声采集系统。着重解决了在满足驱动的条件下降低系统噪声,对提供精密偏置电压、温控电路和输出信号处理过程给出了详细的设计思想和实现方法。试验结果表明,系统工作正常并获得了良好的噪声特性,整个采集系统暗电平等效均方根(RMS)噪声低于0.3 mV。     

一种OLED双稳态驱动电路的设计方案

以光电双基区晶体管为驱动器,设计了一种有机电致发光显示器(OLED)双稳态驱动电路的方案,通过实验得出了输入光功率和输出光功率的光学双稳态的特性曲线,并对该双稳态电路在OLED驱动的应用上进行了分析.     

Poly-Si TFT有源驱动OLED单元像素电路的参数设计

根据有机电致发光显示器件(OLED)的发光特性及多晶硅 薄膜晶体管 (Poly-Si TFT)的工作特性, 对Poly-Si TFT有源驱动OLED的源极跟随型双管 单元像素驱动电路进行了理论计算和模拟仿真, 确定了单元像素中的各种器件参数; 通过AI M-Spice的模拟仿真了整个像素电路工作状态, 对器件参数进行了优化.     

彩色OLED驱动电路的实现方法

本文提出了一种彩色OLED驱动电路的实现方法，就是通过对视频三基色信号的变换、处理，得到全集成OLED所需要的三基色信号和行、场同步信号。本文用模拟电路得到模拟三基色信号，用FPGA得到所需要的行、场扫描和使能信号。     

640X512InGaAs探测器低噪声采集系统设计

针对640?512 InGaAs探测器工作原理和输出信号特点,从低噪声角度出发,设计了由探测器驱动电路、信号缓冲电路、单端转差分电路、差分放大电路、模数转换电路、FPGA时序控制电路构成的InGaAs探测器低噪声采集系统。着重解决了在满足驱动的条件下降低系统噪声,对提供精密偏置电压、温控电路和输出信号处理过程给出了详细的设计思想和实现方法。试验结果表明,系统工作正常并获得了良好的噪声特性,整个采集系统暗电平等效均方根(RMS)噪声低于0.3mV。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of