Digital Television

2000门课程名称翻译大全(十五)色彩 Color色谱 Color Spectrum摄影技巧 Techniques for Photography涉外企业管理 Enterprise Administration Concerning Foreign Natio社会调查的理论与方法 Theories & Methods for Social Investigation社会调查方法 Methods for Social Investigation社会工作 Social Work社会统计分析与SYSTAT应用 Social Statistics Analysis & SYSTAT Application社会统计学 Social Statistics社会问题研究 Research on Social Problems社会心理学 Social Psychology社会学概论 Introduction to Sociololgy社会学简论 Brief Introduction to Sociology社会学理论专题 Current Issues in Theories of Socilolgy 社会学问题研究 Research on Problems of Sociology社会学研究方法 Research Methods of Sociology社会主义财政学 Finance of Socialism社会主义各国政，经体制讨论 Discussion on Political & Economic Systems in Socialism审计学 Science of Auditing生产管理 Administration of Manufacturing生产过程计算机控制 Computer Control in Manufacturing Process生产过程自动化 Water-Turbine Engine生理学 Physiology生命科学与无机化学 Life Science and Inorganic Chemistry 生物工程产品 Bio-engineering Products生物工程导论 Introduction to Bio-engineering生物化学 Biochemistry生物化学工程 Biochemical Engineering生物化学及实验 Biochemistry Experiment生物检测技术 Measurement for Biotechnique生物控制论 Biocybernetics生物流变学 Biorheology生物物理 Biophysics生物学专题 Currents Issues in Biology生物医学超声学 Biomedical Supersonics失效分析 Invalidation Analysis诗歌美学 Aesthetics of Poetry时间序列 Time Sequence实变函数 Functions of Real Variable实验分析 Experimental Analysis实验力学 Experimental Mechanics实验力学基础 Basis of Experimental Mechanics实验流体 Experimental Flowing Object实验应力分析 Analysis of Experimental Stress世界近现代经济史 Modern History of World Economy世界近现代史 Modern History of the World世界文化史 History of World Culture世界政治经济与国际关系 World Politic Ecomony&International Relationship适应控制系统 Adaption Control System市场学 Science of Market市场研究 Research on Market市场预测 Market Predicting输入输出设计原理 Principle of Input and Output Designing 书法 Handwriting数据结构 Data Structure数据库概论 Introduction to Database数据库基础 Basis of Database数据库技术 Technique of Database数据库设计与分析 Design & Analysis of Database数据库系统原理 Principles of Database System数据库应用 Application of Database数据库原理及应用 Principle & Application of Database数控机床 Digit Control Machine Tool数控技术 Digit Control Technique数理方程 Mathematical Equations数理方程积分变换 Integral Transmission of Mathematical Equation数理方程与特殊函数 Equations of Mathmatical Physics & Special Functions数理逻辑 Mathematical Logic数理统计 Mathematical statistics数量经济 Quantity Economics数学分析 Mathematical Analysis数学规划 Mathematical Planning数学模型 Mathematical Modening数学物理方法 Method of Mathematical Physics数值电路 Digital Circuit数值分析 Numerical Analysis数值计算 Digital Computation数字测量技术 Digital Measuring Technique数字测量实验技术 Experimental Technique of Digital Measuring数字测试实验技术 Experimental Technique of Digital Testing数字电路 Digital Circuit数字电路及微机原理 Digital Circuit & Computer Principles 数字电视 Digital Television数字电子基础 Fundamental Digital Electionics数字电子技术 Digital Electronic Technique数字电子技术基础 Fundamental Digital Electronic Technique数字电子技术设计与实验 Experiment & Design of Digital Electron Technique数字电子线路 Digital Electrical Circuitry数字电子与微机原理 Digital Electronics & Principle of Microcomputer数字仿真 Digital Simulation数字化测量技术 Digital Measuring Technique数字控制及微机控制技术 Digital Control & Microcomputer Control Technique数字逻辑 Digital Logic数字图象处理 Digital Image Processing数字系统逻辑设计 Logical Design of Digital System数字系统设计 Design of Digital System数字信号处理 Digital Signal Processing双曲线方程 Hyperbolic Equation水电能源学 Science of HydrOelectric Enelgy水电站过渡过程的特殊问题 Special Problems in the Transition of a Hydropower Station水电站计算机控制 Computer Control in Hydropower Station 水电站经济运行 Economic Operation in Hydropower Station 水电站控制系统分析 Analysis of Control System in Hydropower Station水电站自动化 Automation of Hydropower Station水动力学 Water Dynamics水机工艺结构分析 Technics Structure Analysis of Hydraulic Machinery水力机械测试技术 Test Technique of Hydraulic Machinery 水力机械的汽蚀 Gas Etching of Hydraulic Machinery水力机械调节 Adjustment of Hydraulic Machinery水力机械强度计算 Intensity Calculation of Hydraulic Machinery水力机械原理 Principles of Hydraulic Machinery水力机械制造工艺及结构分析 Manufacturing Technique &Structure Analysis of Hydraulic Machinery水力机械制造工艺学 Manufacturing Technique for Hydraulic Machinery水力学 Hydraulics水轮机 Water-Turbine Engine水轮机调节 Water-Turbine Engine Adaption水轮机调节系统 Adaptive System of Water-Turbine Engine 水轮机水力设计 Hydraulic Design of Water Engine水轮机原理及水力设计 Principles of Water-Turbine Engine & Design of Water Engine水轮机原理与CAD Principle of Water-Turbine Engine & CAD 水轮水力设计 Hydraulic Design of Water Engine水现代控制理论 Modern Theory of Water Controling水质稳定技术 Stability Technique of Water Quality思想教育 Virtue Education素描 Pencil Sketch速冻技术 Technique of Speed Freezing塑性力学 Plastic Machanics算法语言 Algorithmic Language随机过程 Stochastic Process & Time Series Analysis随机运筹学 Randomized Operational Research锁相技术 Phase Lock Technique---来源网络整理，仅供参考。

关于电视机发展史的英语作文The Evolution of Television: A Historical Perspective.The television, often referred to as the "TV," has become a ubiquitous fixture in homes across the globe. Its influence on society, culture, and entertainment is immense, shaping the way we view the world and consume media. However, the television's journey to becoming a household staple was not a straightforward one. It spanned multiple decades, involving various technological advancements and innovations.Early Forms of Television.The concept of television can be traced back to thelate 19th century, when various inventors and scientists experimented with transmitting and receiving visual images using electromagnetic waves. One of the earliest and most notable experiments was conducted by Scottish scientistJohn Logie Baird in 1925. Baird's "televisor" was able totransmit and display basic silhouette images, marking a significant milestone in the development of television.The 1930s saw further advancements in television technology. In the United States, the Federal Communications Commission (FCC) allocated specific frequencies for television broadcasting, laying the foundation for commercial television. By the end of the decade, the first television stations began broadcasting regularly, and the number of television sets in American homes increased significantly.The Golden Age of Television.The 1950s and 1960s marked the "Golden Age" of television. This period saw the emergence of color television, which revolutionized the viewing experience. Color television sets became more affordable and accessible, allowing families to enjoy a more vibrant and realistic viewing experience.During this time, television programming also sawsignificant growth and diversity. Networks such as NBC, ABC, and CBS invested heavily in developing high-quality programming, including dramas, comedies, and variety shows. These programs not only entertained but also reflected the social and cultural issues of the time, sparking meaningful conversations and debate among viewers.The Impact of Satellite and Cable Television.The 1970s and 1980s saw the emergence of satellite and cable television, further transforming the television landscape. Satellite television provided a new way for stations to broadcast their signals, reaching a wider audience and offering a more diverse range of programming options. Cable television followed suit, delivering a more reliable and consistent signal to homes, as well asproviding additional channels and services.These technological advancements not only expanded the reach and availability of television but also allowed for more specialized programming. Cable and satellite providers offered channels dedicated to sports, news, movies, andother interests, catering to the diverse tastes and preferences of viewers.The Digital Revolution.The 21st century has been marked by the digital revolution in television. The transition from analog to digital television has brought about significant changes in the quality, accessibility, and functionality of television sets and programming. Digital television offers higher-quality pictures and sound, as well as more efficientsignal transmission and reception.The advent of streaming services like Netflix, Amazon Prime, and Hulu has further revolutionized television viewing. These services allow viewers to stream a wide range of content, including original programming, movies, and TV shows, directly to their devices. This shift has not only increased viewing options but has also changed the way people consume media, allowing them to watch their favorite shows and movies on the go, anytime, anywhere.In conclusion, the television's evolution from a primitive silhouette-displaying device to a high-tech digital media hub is a testament to the power of technology and innovation. It has transformed the way we view the world and consume media, becoming a central part of our daily lives. As we move forward into the future, it is exciting to imagine what new advancements and innovations will further shape the television landscape.。

Digital TVThe horizontal resolution is something like 500 dots for a color analog TVset.This level of resolution was amazing 50 years ago,but today it is rather passed.The lowest resolution computer monitor that anyone uses todayhas 640*480 pixels,and most people use a resolution like 800*600 or 1024*768.We have grown comfortable with the great clarity and solidity of a computer display and analog TV technology pales by comparison.Many of the new satellites systems,as well as DVDs,use a digital encoding schemes that provides a much clear picture.In this systems the digital information is converted to the analog format to display it on your analog TV.The image looks great compared to a VHS tape,but it would be twice as good if the conversion to analog didnt happen.There is now a big push underway to convert allTV sets from analog to digital,so that digital signals drive yourTV set diretly.When you read and hear people talking about digital television(DTV),what they are talking about is the transmission of pure digital television signals,along with the reception and display of those signals on a digital TV set.The digital signals might be broadcast over the air or transmitted by a cable or satellite system to your home.In your home,a decoder receives the signal and uses it,in digital form to directly drive your digital TV set.There is a class of digital television that is getting a lot of press right now.It is called high-definition television,or HTDV.HTDV is high-resolution digital television combined with Dolby Digital surrounded sound.This combination creats a stunning image with stunning sound.HDTV requies new production and transmission equipment at the HDTV stations,as well as new equipment for reception by the consumer.The higher resolution picture is the main selling point for HDTV.Imagine 720 or 1080 lines of solution compared to the 525 lines people are used to in the United States-it’s a huge difference .LCD(Liquid Crystal Display)You probably use items containing an LCD(liquid crystal display)every day.They are all around us-in loptop computers,digital clocks and watches,microwave ovens,CD players and many other electronic devices.LCDs are common because they offer some real advantages over other display technologies.They are thinner and lighter and draw much less power than cathode ray tubes(CRTs).One feature of liquid crystals is that they’re affected by electric current.A particular sort of nematic liquid crystal,called twisted nematics(TN),is naturally twisted.Applying an electric current to these liquid crystals will untwist them to varying degrees,depending on the current’s voltage.There’s for more to building an LCD than simply creating a sheet of liquid crystals.The combination of four facts makes LCD possible:●Light can be polarized.●Liquid crystals can transmit and change polarized light.●The structure of liquid crystals can be changed by electric current.●There are transparent substances that can conduct electricity.An LCD is a device that uses these four facts in surprising way!There are two main types of LCDs used in computers,passive matrix and active matrix.Most LCD displays use active matrix technology.A thin film transistor(TFT) arranges tiny transistors and capacitors in a matrix on the glass of display. To addressa particular pixel,the proper row is switched on,and then a charge is sent down the correct column.Since all of the other rows that the column intersects are turnedoff,only the capacitor at the designated pixel receives a charge.The capacitor is able to hold the charge until the next refresh cycle.The other type of LCD technology is passive matrix.This type of LCD display uses a grid of conductive metal to charge each pixel.Although they are less expensive to produce ,passive matrix monitors are rarely used today due to the technology’s slow response time and imprecise voltage control compared to active matrix technology.Pure Vision Plasma DisplayWe’ll just say this up front:you may have difficulty believing that your new PureVision Plasma Display(Fig 11.4) is only 4” thick and hanging on your living room wall,that you can watch DVD’s on it,plus high-definition TV,home movies, and videotapes,and that you can play video games on it,surf the web,and do e-mail,but it’s all ture.One thing that you will believe immediately is how incredible the pictureis;high-definition broadcasts and DVD movies look absolutely stunning,and when you are playing an analog source like a videotape or regular TV,the Pure vision Plasma Display up-converts these signals to digital,for a vastly improved picture.When you are watching a movie,the display’s PureCinema II function detects the film-based original source and instantly recreats each individual still frame,for a more film-like presentation.When you’re using it as a monitor for a Mac or PC,the PureVision Plasma Display’s resolution is just as astounding,able to process full-specificationVGA,SVGA,and XGA input.The unit’s back panel provides the breadth of connections you’ll need for your various components,including those for a PC or Mac,and component and composite video inputs for a high-definition tuner,DVD player,or other sources.About televisionTelevision is certainly one of the most influential forces of our time.To understand TV,let start at the beginning with a quick note about yourbrain.there are two amazing things about your brain that make televisionpossible.The first principle is this:If you devide a still image into a connection of small colored dots,your brain will ressemble the dots into a meaning full image.On a tv or computer screen,the dots are called pixels.The human brain’s second amazing feature relating to television is this:If you devide a moving scene into a sequence of still pictures and show the still images in rapid sucession,the brain will reassemble the still images into a sigle,moving scene.The cathode ray tubeSome TVs in use today rely on a device known as the cathode ray tube,or CRT,to display their images.Let’s start with the CRT,because CRTs are used to be the most common way of displaying images.In a cathode ray tube,the cathode is a heated filament(not unlike the filament in a normal light bulb).The heated filament is in a vacuum created inside a glass tube.The ray is a stream of electrons that naturally pour off a heated cathode into the vacuum.Electrons are negative.The anode is positive,so it attracts the electrons pouring off the cathodes.In a tv’s cathode ray tube,the stream of electrons is focused by a focusing anode into a tight beam and then accelerated by an accelerating anode.This tight, high-speed beam of electrons files through the vacuum in the tube and hits theflat screen at the end of the tube.This screen is coated with phosphor,which glows when struck by the beam.There are coils,which are able to create magnetic fields inside the tube.One set of coils creates a magnetic field that moves the electron beam vertically,while another set moves the beam horizontally.By controlling the voltages in the coils,you can position the electron beam at any point on the screen.In a CRT,phosphor coats the inside of the screen.When the electron beam strikes the phosphor,it makes the screen glow.In a black-and-white screen,there are three phosphors as dots or stripes that emit red,green and blue light.There are also three electron beams to illuminate the three different colors together.The black-and-white tv signalIn a black-white tv,the electron beam paints an image onto the screen by moving the electron beam across the phosphor a line at a time.As the beam paints each line from left to right,the intensity of the beam is changed to creat different shades of black,gray and white across the screen.Because the lines are spaced very closely together,your brain integrates them into a single image.A tv screen normally has about 480 lines visible from top to bottom.When a television station wants to broadcast a signal to your tv,or when your VXR(video cassette recorder) wants to display the movie on a video tape on your tv,the signal needs to mesh with the electronics controlling the beam so that the tv can accurately paint the picture that the tv station or vcr sends.The tv station or vcr therefore sends a well-known signal to the tv that contains three different parts:●Intensity information for the beam as it paints each line●Hoeizontal-retrace signals to tell the TV when to move the beam back at the endof each line●Vertical-retrace signals 60 times per second to move beam from bottom-right totop-leftColor TVA color tv screen differs from a black-and-white screen in three ways:●There are three electron beams that move simultaneously across the screen.Theyare named the red,green and blue beams.The screen is not coated with a signal sheet of phosphor as in a black-and-white tv.Instead,the screen is coated with red,green and blue phosphors arranged in dots or stripes.If you turn on your tv or computer monitor and look closely at the screen with a magnifying glass, you will be able to see the dots or stripes.On the inside of the tube,very close to the phosphor coating,there is a thin metal screen called a shadow mask. This mask is perforated with very small holes that are aligned with the phosphor dots on the screen.When a color tv needs to create a red dot,it fires the red beam at the red phosphor.Similarly for green and blue dots.To create a white dot,red,green and blue beams are fired simultaneously-the three colors mix together to create white.To create a black dot,all three beams are turned off as they scan past the dot.All other colors on a tv screen are combinations of red,green and blue.A color tv signal start off looking just like a black-and-white signal.An extra chrominance signal is added by superimposing a 3.579545MHz sine wave onto the standard black-and-white signal.A phase shift in the chrominance signal indicates the color to display.The amplitude of the signal determines the saturation,The tab shows you the relationship between color and phase.A black-and-white tv filters out and ignores the chrominance signal.A color tvpicks it out of the signal and decodes it,along with the normal intensity signal,to determine how to modulate the three color beams.Getting the signal to TVYou probably familiar with five different ways to get a signal into your tv set:Broadcast programming received through an antenna.The composite tv signal can be broadcast to your house on any available channel.The composite video signal is amplitude-modulated into the appropriate frequency,and then the sound is frequency-modulated as a separate signal.VCR or DVD player that connects to the antenna terminals.VCRs are essentially their own little tv stations.The video tape cotains a composite video signals off the tape and turns them into a signal off the tape and turns them into a signal that,to the tv ,looks just like the broadcast signal for channel 3or4.Cable tv arriving in a set-top box that connects to the antenna terminals.The cable in cable tv contains a large number of channels that are transmitted on the cable.Your cable provider could simply modulate the different cable tv programs onto all of the normal frequencies and transmit that to your hour via the cable;then,the tuner in your tv would accept the signal and you couldn’t need a cablebox.Unfortunately,that approach would make theft of cable service very easy,so the signals are encoded in funny ways.The set-top box is a decoder.You select the channel on it,it decodes the right signal and then does the same thing a vcr does to transmit the signals to the tv.Large satellite-dish antenna arriving in a set-up box that connects to the antenna terminals.Large-dish satellite antennas pick off unencoded or encoded signals being beamed to earth by satellites.First,you point the dish to a particular satellite,and then you select a particular channel it if necessary and then sends it to tv.Small satellite-dish antenna arriving in a set-top box that connects to the antenna terminals.Small-dish satellite systems are digital.The tv programs are encoded in MPEG-2 format and transmitted to earth.The set-top box does a lot of work to decodeMPEG-2,then converts it to a standard analog tv signal and send it to your tv.TouchscreenA touchscreen is an intuitive computer input device that works by simply touching the display screen,either by a finger,or with a stylus,rather than tying on a keyboard or pointing with a mouse.The touch screen interface-whereby users naving a computer system by touching icons or links on the screen itself-is the most simple,intuitive,and easiest to learn of all PC input devices and is fast becoming the interface of choice for a wide variety of applications,such as:Public information systems:information kiosks, tourism displays,and other electronic displays are used by many people that have little or no computing experience.The user-friendly touchscreen interface can be less intimidating and easier to use than other input devices,especially for novice users,making information accessible to the widest possible audience.Restaurant systems:time is money,especially in a fast paced restaurant or retail environment.Because touchscreen systems are easy to use,overall training time for new employees can be reduced.And work can get done faster,because employees can simply touch the screen to perform tasks,rather than entering complex keystrokes or commands.Customer Self-Service:In today’s fast pace world,waiting in line is one of the things that have yet to speed up.Self-service touchscreen terminals can be used to improve customer service at busy stores,fast service restaurants,transportation hubs,and more.Control Systems:The touchscreen interface is useful in systems ranging from industrial process control to home automation.By integrating the input device with the display,valuable workspace can be saved.And with a graphical interface,operators can monitor and control complex operations in real-time by simply touching the screen..Any touchscreen system comprises the following three basic components.A touchscreen sensor panel,that sits above the display and which generates appropriate voltages according to where,precisely,it is touched.A touchscreen controller,that processes the signals received from the sensor and translates these into touch event data which is passed to the PC’s processor,usually via a serial or USB interface.A software driver provides an interface to the PC’s operating system and which translates the touch event data into mouse events,especially enabling the sensor panel to “emulate” a mouse.There are several types of touchscreens:Here we discuss the infrared touchscreens.Infrared touchscreens are based on light-beam interruption technology.Instead of placing a layer on the display surface,a frame surrounds it.The frame assembly is comprised of printed wiring boards on which the opto-electronics are mounted and is concealed behind an IR-transparent bezel.The frame contains light sources-or light-emitting diodes-on one side,and light detectors-or photosensors-on the opposite side.The effect of this is to create an optical grid across the screen.When any object touches the screen,the invisible light beam is interrupted,causing a drop in the signal received by the photosensors.Based on which photosensors stop receiving the light signals,it is easy to isolate a screen coordinate.Infrared touch systems are solid state technology and have no moving mechanical parts.As such,they have no physical sensor that can be abraded or worn out with heavy use over time,Futhermore,since they do not require an overlay-which can be broken-they are less vulnerable to vandalism and also extremely tolerant shock and vibration.数字电视一个模拟彩电的水平分辨率约500点，这个分辨率在五十年前是很高的，但今天却过时了。

通信工程专业课程Communication Engineering Specialty Course专业核心课程：The professional core courses:信息论及编码原理、通信原理、电视原理、电磁场及电磁波、天线及电波传播Information theory and coding theory, communication principle, the principle of television, electromagnetic field and electromagnetic wave, antenna and radio wave propagation广播电视发送方向：数字电视技术、广播电视发送技术、数字广播技术Radio and television transmission direction: digital television technology, radio and television transmission technology, digital broadcasting technology移动通信方向：移动通信、现代交换技术、移动电视技术Directions: mobile communication, mobile communication, mobile TV technology of modern switching technology信息论及编码原理：本课程着重介绍信源的类型及特性、信源熵、信道容量、信息率失真函数等信息论的基本理论，以及信源编码和信道编码的基本概念和主要方法。

这些信息论及编码的基本理论和方法不仅适用于通常意义的通信领域，如数字视音频处理和多媒体通信等，也适用于信息安全等计算机信息处理和管理等专门领域的需要。

Information theory and coding theory: This course mainly introduces the types and characteristics of information source, information entropy, channel capacity, information rate distortion function of information theory, as well as the source coding and channel coding of the basic concepts and main methods. The information theory and coding theory and method can be applied not only to the usual sense of the communication field, such as the processing of digital audio and video and multimedia communications, also applies to the information security of computer information processing and management of specialized areas of need.通信原理：本课程以当前广泛应用的通信系统和代表发展趋势的通信技术为背景，系统介绍数字通信基本原理，为学生今后从事相关工作提供理论基础和实际知识。

常用电视与多媒体词汇A aerial, antellna 天线A ampere 安培A amplitude振幅，幅度A anslog 模拟A audio音频AAC automatic amplitude control 自动振幅控制ABB automatic black balance 自动黑平衡，ABC automatic background control 自动亮度控制ABC automatic beam cotltrOI 自动电子束控制ABC automatic black control 自动黑电平控制ABC automatic brightness control 自动亮度控制ABL automatic black level 自动黑电平ABL automatic brightness limiter circuit 自动亮度限制电路ABO automatic beam optimum 自动电子束佳化ABU Asian Broadcasting Union 亚洲广播联盟（亚广联）AC alternatingcurrent 交流电AC audio Center 音频中心ACA adjacent channel attenuation 邻频道衰减ACC automatic centering control 自动中心控制ACC automatic chroma control 自动色度（增益）控制ACE audio control erasing 音频控制消磁（迹）ACI adjacent channel interference 令B频道干扰ACK automatic chroma killer 自动消色器ACP additive colour process 力口色法ACR adjacent channel rejection 令B频抑制ACR audio cassette recorder 盒式录音机ACTV advanced compatible television 高级兼容电视A /D analog/Digital 模拟/数字ADA audio distribution amPlifier 音频分配放大器ADC automatic degaussirng circuit 自动消磁电路ADC analog —to —digital converter 模/数转换器ADG automatic degaussing 自动消磁Adj adjustment 调整，校准ADPCM adaptive differential pulse code modulation自适应差分脉冲编码调制ADV advanced超前的，提前的，先进的AES Audio Engineering Society（美国）音频工程协会ALC automatic level cont⑹自动电平控制ALC automatic light control 自动照明控制，自亮度控制ALM Audio level meter 音频电平表AM amplitude modulation 调幅AMP ampere 安培AMP amplifier 放大器AMS automatic music sensor自动音乐传感装置ANC automatic noise canceller 自动噪声消除器ANRS a11tOmaticnoj；creduction system 自动降噪系统ANS automic noise supressor 噪声自动抑制器ANT天线AO audio oscillator 音频振荡器APC autormatic phase control 自动相位控制APL automaticr phase lock 自动锁相APL average picture level 平均图象电平ARC automatic resolution control 自动清晰度控制ARS active repeater satellite 主动式（现，行）中继卫星ASCII American standard code for information interchange美国信息交换标准（ASS audio subsystem 音频子系统ASS（Y） assembly汇编，组件，装配.AST automatic scaning tracking 自动扫描跟踪（磁头）ATC attribute controller 属性控制器ATC automatic timing control 自动定时控制ATC automatic tone correction 自动音频校正ATC automatic tone correction 自动音频校正ATD aUtOmatic tape degausser 磁带自动去磁器ATF automatic track finding 自动磁迹跟踪ATM asynchronous transfer mode 异步传输模式ATRAC adaptive transform acoustic coding 自适应转换声学编码ATS aided tracking system 辅助跟踪系统ATT attachment附件，附属装置AUTO CENT automatic centering 自动中心（会聚）AUTOW / B BAl automatic white black balance 自动白平衡/黑平衡AUX auxiliary辅助的附件AV audio —visual 视听的AF aUdiO frequency 音频AFA audio frequency amplifier 音频放大器AFC automatic frequerncy control 自动频率控制AFG audiO frequency gernerator 音频发生器AFL after fade listeen 衰减（推子）后监听AFM audio frequency modulation 音频调频（信号） AFT automatic fine tuning 自动微调AFT auto matic frequency track 自动频率跟踪AFT automatic frequency trim 自动额率微调AGC automatic gain control 自动增益控制AI appliCatiOn interface 应用接口AIAO a11input ／all 0utput 全进全出AJB audiojackboard 音频插口板AJF audiojackfield 音频插口板 B base 基极 B black 黑色（的） B blanking pulse（复合）消隐脉冲B blue 蓝色（的） B byte 字节BA buffer amplifier 缓冲放大器BAL balance 平衡BAL MOD balance modulator 平衡调制器BATT battery 电池BB baseband 基带BB black burst 黑场信号BBAL black balance 黑平衡BC broadcast 广播BCT bandwidth compression technique 带宽压缩技术BE band elimination 带阻（滤波器）BF bandfilter 频带滤波器BF burst flag 色同步旗（脉冲） BIAS OSC bias oscillator 偏磁振荡器 C CapaCitance 电容 C CapaCitOr 电容器 C chroma 色度，色品 C c0llector 集电极 C Colour 彩色CAM camera 摄象机CAP capstan 主导轴CATV cable television 有线电视，电缆电视CATV central aerial television 共用天线电视CATV Community antenna television 共用天线电视CAV Constant angular velocity 恒定角速度AV average value 平均值AVC automatic volume control 自动音量控制AVD audio video driver 音频视频驱动器AVE audio video engine 音频视频引擎AVK audio video kernel 音频视频核AVL audio vide0 library 音频视频库AVR automatic voltage regulator 自动稳压器AVSS audio video subsystem 音频视频子系统AVSS audio video support system 音频视频支撑系织AWB automatic white balance 自动白平衡AWC automatic white control 自动白电平控制AZC automatic zooming control 自动变焦控制BIOS basic input ／output system 基本输入输出系统B —ISDN broadband—intergrated services digitalnetwork 宽带综合业务数据网BK break —in keying 插入键控BL blanking 消隐BNC 视频插头及座（一种视频标准连接端）BOT beginning of tape 磁带首端，带头BPF band pass filter 带通滤波器BRST broodcast 广播BV breakdown voltage 击穿电压BVU broadcasting video unit 广播视频型（一种3／4 英寸带录象机记录格式）BW bandwidth 频带宽度B／W black／white 黑／白CMC Colour mixture curve 混色曲线CMEX Continuous media extensions to x —windows 连续介质扩展的X 窗口CMYB cyannlagenta yellow blacking 青、紫（品红）、黄、黑（即4：4：4：4 编码）C／N Carrier—to—noise ratio 载噪比CNR Carrier —to—noise ratio 载噪比CO cut out 切断。

上海市有线数字电视整转基本交互型机顶盒规范（2014版）东方有线网络有限公司总师办发布目次前言 (1)1范围 (2)2规范性引用文件 (2)3术语和缩略语 (2)4机顶盒关键功能要求 (5)5机顶盒硬件规范 (6)6机顶盒软件功能规范 (11)附录A (规范性附录) 机顶盒可选支持的硬件规范................................. 错误！未定义书签。

附录B (规范性附录) 机顶盒可选支持的软件功能规范......................... 错误！未定义书签。

前言本规范由东方有线网络有限公司提出。

本规范由东方有线数字电视整转机顶盒规范工作组起草。

本规范主要起草人：万乾荣、王正军、王明敏、陈宝霞、吴坚、周逸敏、丁波、张永刚。

上海市有线数字电视整转基本交互型机顶盒规范1范围本规范定义了上海市使用的有线数字电视整转基本交互型机顶盒（以下简称机顶盒）的软硬件功能和性能要求。

本规范适用于上海市有线数字电视系统。

2规范性引用文件下列文件中的条款通过本部分的引用而成为本部分的条款。

凡是注日期的引用文件，其随后所有的修改单（不包括勘误的内容）或修订版均不适用于本部分。

然而，鼓励根据本部分达成协议的各方研究是否可使用这些文件的最新版本。

凡是不注日期的引用文件，其最新版本适用于本部分。

GB 2312-1980 信息交换用汉字编码字符集基本集GB/T 7400.6 广播电视名词术语电视广播通用部分GB/T 7400.7 广播电视名词术语电视广播视觉与图象质量GB/T 7400.11 数字电视术语GB 8898-2001 音频、视频及类似电子设备安全要求GB/T 14960-1994 电视广播接收机用红外遥控发射器技术要求和测量方法GB/T 17191.3—1997 信息技术具有1.5Mbit/s数据传输率的数字存储媒体运动图像及其伴音的编码第3部分：音频GB/T 17975.1-2000 信息技术运动图像及其伴音信号的通用编码第1部分：系统GB/T 17975.2-2000 信息技术运动图像及其伴音信号的通用编码第2部分：视频GB/T 17975.3-2002 信息技术运动图像及其伴音信号的通用编码第3部分：音频GY/T 170-2001 有线数字电视广播信道编码与调制规范GY/Z 175-2001 数字电视广播条件接收系统规范GY/T 201-2004 数字电视系统中的数据广播规范GY/T 230-2008 数字电视广播业务信息规范GY/T 231-2008 数字电视广播电子节目指南规范运动图像及其伴音信号的通用编码系统、视频和音频部分的实施指南（暂行）ISO/IEC 13818-4 Information Technology –Generic Coding of Moving Pictures and Associated Audio Information – Part 4: Conformance Testing, 1998W3C Extensible Markup Language (XML) 1.0 (第二版)ISO 639-1, 639-2 – Codes for the Representation of Names of Languages- Part 1: Alpha-2 Code, Part 2:Alpha-3 CodeIETF STD0013 （RFC 1035）, Domain Names–Implementation and Specification （Nov. 1987）IETF RFC 1945, Hypertext Transfer Protocol -- HTTP/1.0 (May 1996)IETF RFC 1738, Uniform Resource Locators(URL) (December 1994)东方有线数字电视遥控器按键定义及协议规范东方有线数字电视平台网络信息规范东方有线数字电视数据广播内容解析规范东方有线数字电视数据广播传输接收规范东方有线数字电视节目导视内容解析规范东方有线数字电视节目导视传输接收规范东方有线数字电视节目导视版面布局规范东方有线数字电视互动信息内容解析规范东方有线数字电视媒体服务节目目录解析规范东方有线数字电视媒体服务会话与流控规范东方有线数字电视媒体服务传输接收规范东方有线数字电视终端网络管理规范3术语和缩略语3.1术语和定义下列术语和定义适用于本标准。

电视的详细介绍作文英语Television, often abbreviated as TV, is a telecommunication medium used for transmitting moving images and sound. It has become an integral part of modern society, providing entertainment, information, and education to millions of people around the world. In this essay, we will delve into the detailed introduction of television.History of Television:Television's roots can be traced back to the late 19th century with the invention of the mechanical television by pioneers such as Paul Nipkow, John Logie Baird, and Philo Farnsworth. However, it wasn't until the mid-20th century that television became widely accessible to the public. The introduction of electronic television systemsrevolutionized the way we consume visual media, leading to the rise of broadcast television networks.Components of Television:1. Display Screen: The most prominent component of a television is the display screen, where images and videos are displayed. Over the years, television screens have evolved from bulky cathode ray tube (CRT) displays to sleek and thin liquid crystal displays (LCDs), light-emitting diode (LED), and plasma screens.2. Tuner: The tuner is responsible for selecting specific television channels or frequencies. It allows users to switch between different channels to access various programs and broadcasts.3. Audio System: Television sets are equipped with audio systems that reproduce sound accompanying the visual content. This can range from basic mono speakers to advanced surround sound systems for a more immersive viewing experience.4. Input and Output Ports: Modern televisions feature a variety of input and output ports to connect externaldevices such as DVD players, gaming consoles, and streaming devices. Common ports include HDMI, USB, Ethernet, and component/composite inputs.5. Remote Control: The remote control is a handheld device that enables users to interact with their television sets from a distance. It allows for functions such as changing channels, adjusting volume, and accessing menu options.Types of Television:1. Analog Television: Analog television uses analog signals to transmit audio and video information. However, analog television has become obsolete in many parts of the world due to the transition to digital broadcasting.2. Digital Television: Digital television (DTV)utilizes digital signals, offering superior picture and sound quality compared to analog television. It also enables features such as high-definition (HD) resolution, widescreen aspect ratios, and multicasting.3. Smart Television: Smart TVs are equipped withinternet connectivity and built-in software platforms, allowing users to access streaming services, browse the web, and download apps directly on their television screens.4. 3D Television: 3D televisions utilize stereoscopic technology to create the illusion of depth, providing viewers with a more immersive viewing experience. However,3D television adoption has been limited due to the availability of content and the need for specialized glasses.5. Curved Television: Curved TVs feature a gentlycurved screen design, which is believed to offer a more immersive viewing experience by providing a wider field of view and reducing glare. However, the benefits of curved televisions are subjective and may vary depending on individual preferences.Impact of Television:Television has had a profound impact on society, influencing culture, politics, and social norms in various ways. Some of the key impacts of television include:1. Entertainment: Television provides a vast array of entertainment options, including TV shows, movies, sports broadcasts, and reality programs. It has become a primary source of leisure activity for many people, shaping popular culture and trends.2. Information: Television serves as a vital medium for disseminating news, information, and educational content to the public. News channels provide up-to-date coverage of current events, while educational programs offer valuable insights into science, history, and culture.3. Advertising: Television advertising is a powerful tool for promoting products, brands, and services to a wide audience. Commercial breaks during TV programs allow advertisers to reach consumers and influence their purchasing decisions.4. Socialization: Television plays a significant role in shaping social interactions and norms, especially among younger audiences. TV programs and characters can influence attitudes, values, and behavior, contributing to socialization processes.5. Cultural Exchange: Television enables cultural exchange and cross-cultural understanding by showcasing diverse perspectives, traditions, and lifestyles from around the world. International programming and channels facilitate global communication and cooperation.In conclusion, television is a multifaceted medium that has transformed the way we communicate, entertain, and interact with the world. From its humble beginnings as a mechanical invention to the sophisticated smart TVs of today, television continues to evolve and shape our society in profound ways.。

广播电视英语词汇术语大全2007-7-309:31A Analog 模拟A/D Analog to Digital 模-数转换AAC Advanced Audio Coding 高级音频编码ABB Automatic Black Balance 自动黑平衡ABC American Broadcasting Company 美国广播公司Automatic Bass Compensation 自动低音补偿Automatic Brightness Control 自动亮度控制ABL Automatic Black Level 自动黑电平ABLC Automatic Brightness Limiter Circuit 自动亮度限制电路ABU Asian Broadcasting Union 亚洲广播联盟（亚广联 ABS American Bureau of Standard 美国标准局AC Access Conditions 接入条件Audio Center 音频中心ACA Adjacent Channel Attenuation 邻频道衰减ACC Automatic Centering Control 自动中心控制Automatic Chroma Control 自动色度（增益控制ACK Automatic Chroma Killer 自动消色器ACP Additive Colour Process 加色法ACS Access Control System 接入控制系统Advanced Communication Service 高级通信业务Area Communication System 区域通信系统ADC Analog to Digital Converter 模-数转换器Automatic Degaussirng Circuit 自动消磁电路ADL Acoustic Delay Line 声延迟线ADS Audio Distribution System 音频分配系统AE Audio Erasing 音频（声音擦除AEF Automatic Editing Function 自动编辑功能AES Audio Engineering Society 音频工程协会AF Audio Frequency 音频AFA Audio Frequency Amplifier 音频放大器AFC Automatic Frequency Coder 音频编码器Automatic Frequency Control 自动频率控制AFT Automatic Fine Tuning 自动微调Automatic Frequency Track 自动频率跟踪Automatic Frequency Trim 自动额率微调AGC Automatic Gain Control 自动增益控制AI Artificial Intelligence 人工智能ALM Audio-Level Meter 音频电平表AM Amplitude Modulation 调幅AMS Automatic Music Sensor 自动音乐传感装置ANC Automatic Noise Canceller 自动噪声消除器ANT ANTenna 天线AO Analog Output 模拟输出APS Automatic Program Search 自动节目搜索APPS Automatic Program Pause System 自动节目暂停系统APSS Automatic Program Search System 自动节目搜索系统AR Audio Response 音频响应ARC Automatic Remote Control 自动遥控ASCII American Standard Code for Information Interchange 美国信息交换标准AST Automatic Scanning Tracking 自动扫描跟踪ATC Automatic Timing Control 自动定时控制Automatic Tone Correction 自动音频校正ATM Asynchronous Transfer Mode 异步传输模式ATF Automatic Track Finding 自动寻迹ATS Automatic Test System 自动测试系统ATSC Advanced Television Systems Committee （美国高级电视制式委员会AVC Automatic Volume Control 自动音量控制AVR Automatic Voltage Regulator 自动稳压器AWB Automatic White Balance 自动白平衡AZC Automatic Zooming Control 自动变焦控制AZS Automatic Zero Setting 自动调零BA Branch Amplifier 分支放大器Buffer Amplifier 缓冲放大器BAC Binary-Analog Conversion 二进制模拟转换BB Black Burst 黑场信号BBC British Broadcasting Corporation 英国广播公司BBI Beijing Broadcasting Institute 北京广播学院BC Binary Code 二进制码Balanced Current 平衡电流Broadcast Control 广播控制BCT Bandwidth Compression Technique 带宽压缩技术BDB Bi-directional Data Bus 双向数据总线BER Basic Encoding Rules 基本编码规则Bit Error Rate 比特误码率BF Burst Flag 色同步旗脉冲BFA Bare Fiber Adapter 裸光纤适配器Brillouin Fiber Amplifier 布里渊光纤放大器BGM Background Music 背景音乐BIOS Basic Input／Output System 基本输入输出系统B-ISDN Broadband-ISDN 宽带综合业务数据网BIU Basic Information Unit 基本信息单元Bus Interface Unit 总线接口单元BM Bi-phase Modulation 双相调制BML Business Management Layer 商务管理层BN Backbone Network 主干网BNT Broadband Network Termination 宽带网络终端设备BO Bus Out 总线输出BPG Basic Pulse Generator 基准脉冲发生器BPS Band Pitch Shift 分频段变调节器BSI British Standard Institute 英国标准学会BSS Broadcast Satellite Service 广播卫星业务BT Block Terminal 分线盒、分组终端British Telecom 英国电信BTA Broadband Terminal Adapter 宽带终端适配器Broadcasting Technology Association （***广播技术协会BTL Balanced Transformer-Less 桥式推挽放大电路BTS Broadcast Technical Standard 广播技术标准BTU Basic Transmission Unit 基本传输单元BVU Broadcasting Video Unit 广播视频型（一种3/4英寸带录像机记录格式BW BandWidth 带宽BWTV Black and White Television 黑白电视CA Conditional Access 条件接收CAC Conditional Access Control 条件接收控制CAL Continuity Accept Limit 连续性接受极限CAS Conditional Access System 条件接收系统Conditional Access Sub-system 条件接收子系统CATV Cable Television 有线电视，电缆电视Community Antenna Television 共用天线电视CAV Constant Angular Velocity 恒角速度CBC Canadian Broadcasting Corporation 加拿大广播公司CBS Columbia Broadcasting System （美国哥伦比亚广播公司CC Concentric Cable 同轴电缆CCG Chinese Character Generator 中文字幕发生器CCIR International Radio Consultative Committee 国际无线电咨询委员会CCITT International Telegraph and Telephone Consultative Committee 国际电话电报咨询委员会CCR Central Control Room 中心控制室CCTV China Central Television 中国中央电视台Close-Circuit Television 闭路电视CCS Center Central System 中心控制系统CCU Camera Control Unit 摄像机控制器CCW Counter Clock-Wise 反时针方向CD Compact Disc 激光唱片CDA Current Dumping Amplifier 电流放大器CD-E Compact Disc Erasable 可抹式激光唱片CDFM Compact Disc File Manager 光盘文件管理（程序CDPG Compact-Disc Plus Graphic 带有静止图像的CD唱盘CD-ROM Compact Disc-Read Only Memory 只读式紧凑光盘CETV China Educational Television 中国教育电视台CF Color Framing 彩色成帧CGA Color Graphics Adapter 彩色图形（显示卡CI Common Interface 通用接口CIE Chinese Institute of Electronics 中国电子学会CII China Information Infrastructure 中国信息基础设施CIF Common Intermediate Format 通用中间格式CIS Chinese Industrial Standard 中国工业标准CLV Constant Linear Velocity 恒定线速度CM Colour Monitor 彩色监视器CMTS Cable Modem Termination System 线缆调制解调器终端系统CNR Carrier-to-Noise Ratio 载噪比CON Console 操纵台Controller 控制器CPB Corporation of Public Broadcasting （美国公共广播公司CPU Central Processing Unit 中央处理单元CRC Cyclic Redundancy Check 循环冗余校验CRCC CRI Cyclic Redundancy Check Code 循环冗余校验码CROM China Radio International 中国国际广播电台CRT Control Read Only Memory 控制只读存储器CS Cathode-Ray Tube 阴极射线管CSC Communication Satellite 通信卫星CSS Color Sub-carrier 彩色副载波Center Storage Server 中央存储服务器Content Scrambling System 内容加扰系统CSU Channel Service Unit 信道业务单元CT Color Temperature 色温CTC Cassette Tape Controller 盒式磁带控制器Channel Traffic Control 通道通信量控制Counter Timer Circuit 计数器定时器电路Counter Timer Control 计数器定时器控制CTE Cable Termination Equipment 线缆终端设备Customer Terminal Equipment 用户终端设备CTV Color Television 彩色电视CVD China Video Disc 中国数字视盘CW Carrie Wave 载波DAB Digital Audio Broadcasting 数字音频广播DASH Digital Audio Stationary Head 数字音频静止磁头DAT Digital Audio Tape 数字音频磁带DBMS Data Base Management System 数据库管理系统DBS Direct Broadcast Satellite 直播卫星DCC Digital Compact Cassette 数字小型盒带Dynamic Contrast Control 动态对比度控制DCT Digital Component Technology 数字分量技术Discrete Cosine Transform 离散余弦变换DCTV Digital Color Television 数字彩色电视DD Direct Drive 直接驱动DDC Direct Digital Control 直接数字控制DDE Dynamic Data Exchange 动态数据交换DDM Data Display Monitor 数据显示监视器DES Data Elementary Stream 数据基本码流Data Encryption Standard （美国数据加密标准DF Dispersion Flattened 色散平坦（光纤DG Differential Gain 微分增益DI Digital Interface 数字接口DITEC Digital Television Camera 数字电视摄像机DL Delay Line 延时线DLD Dynamic Linear Drive 动态线性驱动DM Delta Modulation 增量调制Digital Modulation 数字调制DMB Digital Multimedia Broadcasting 数字多媒体广播DMC Dynamic Motion Control 动态控制DME Digital Multiple Effect 数字多功能特技DMS Digital Mastering System 数字主系统DN Data Network 数据网络DNG Digital News Gathering 数字新闻采集DNR Digital Noise Reducer 数字式降噪器DOB Data Output Bus 数据输出总线DOCSIS Data Over Cable Service Interface Specifications 有线数据传输业务接口规范DOC Drop Out Compensation 失落补偿DOS Disc Operating System 磁盘操作系统DP Differential Phase 微分相位Data Pulse 数据脉冲DPCM Differential Pulse Code Modulation 差值脉冲编码调制DPL Dolby Pro Logic 杜比定向逻辑DSB Digital Satellite Broadcasting 数字卫星广播DSC Digital Studio Control 数字演播室控制DSD Dolby Surround Digital 杜比数字环绕声DSE Digital Special Effect 数字特技DSK Down-Stream Key 下游键DSP Digital Signal Processing 数字信号处理Digital Sound Processor 数字声音处理器DSS Digital Satellite System 数字卫星系统DT Digital Technique 数字技术Digital Television 数字电视Data Terminal 数据终端Data Transmission 数据传输DTB Digital Terrestrial Broadcasting 数字地面广播DTBC Digital Time-Base Corrector 数字时基校正器DTC Digital Television Camera 数字电视摄像机DTS Digital Theater System 数字影院系统Digital Tuning System 数字调谐系统Digital Television Standard 数字电视标准DVB Digital Video Broadcasting 数字视频广播DVC Digital Video Compression 数字视频压缩DVE Digital Video Effect 数字视频特技DVS Desktop Video Studio 桌上视频演播（系统DVTR Digital Video Tape Recorder 数字磁带录像机EA Extension Amplifier 延长放大器EB Electron Beam 电子束EBS Emergency Broadcasting System 紧急广播系统EBU European Broadcasting Union 欧洲广播联盟EC Error Correction 误差校正ECN Emergency Communications Network 应急通信网络ECS European Communication Satellite 欧洲通信卫星EDC Error Detection Code 错误检测码EDE Electronic Data Exchange 电子数据交换EDF Erbium-Doped Fiber 掺饵光纤EDFA Erbium-Doped Fiber Amplifier 掺饵光纤放大器EDL Edit Decision List 编辑点清单EDTV Extended Definition Television 扩展清晰度电视EE Error Excepted 允许误差EFM Eight to Fourteen Modulation 8-14调制EFP Electronic Field Production 电子现场节目制作EH Ethernet Hosts 以太网主机EIN Equivalent Input Noise 等效输入噪声EIS Electronic Information System 电子信息系统EISA Extended Industrial Standard Architecture 扩展工业标准总线EL Electro-Luminescent 场致发光EM Error Monitoring 误码监测EN End Node 末端节点ENG Electronic News Gathering 电子新闻采集EOT End of Tape 带尾EP Edit Point 编辑点Error Protocol 错误协议EPG Electronic Program Guides 电子节目指南EPS Emergency Power Supply 应急电源ERP Effective Radiated Power 有效辐射功率ES Elementary Stream 基本码流End System 终端系统ESA European Space Agency 欧洲空间局ETV Education Television 教育电视FA Enhanced Television 增强电视FABM FAS Facial Animation 面部动画FC Fiber Amplifier Booster Module 光纤放大器增强模块Fiber Access System 光纤接入系统Frequency Changer 变频器FCC Fiber Channel 光纤通道FD Film Composer 电影编辑系统Federal Communications Commission （美国联邦通信委员会FDCT Frequency Divider 分频器FDDI FDM Fiber Duct 光纤管道FDP Forward Discrete Cosine Transform 离散余弦正变换FE Fiber Distributed Data Interface 分布式光纤数据接口Frequency-Division Multiplexing 频分复用FF Fiber Distribution Point 光纤分配点FG Front End 前端FH Framing Error 成帧误差FIT Fast Forward 快进FN Frequency Generator 频率发生器FOA Frequency Hopping 跳频FOC Frame-Interline Transfer 帧一行间转移Fiber Node 光纤节点Fiber Optic Amplifier 光纤放大器FOM Fiber Optic Cable 光缆FON Fiber Optic Communications 光纤通信FOS Fiber Optic Coupler 光纤耦合器FOTC Fiber Optic Modem 光纤调制解调器FS Fiber Optic Net 光纤网Factor of Safety 安全系数Fiber Optic Trunk Cable 光缆干线FT Frame Scan 帧扫描FTP Frame Store 帧存储器FTTB Frame Synchro 帧同步机FTTC France Telecom 法国电信FTTH FTTN File Transfer Protocol 文件传输协议FTTO Fiber-To-The-Building 光纤到楼GA Fiber-To-The-Curb 光纤到路边GB Fiber-To-The-Home 光纤到家GFC Fiber-To-The-Node 光纤到节点GMT Fiber-To-The-Office 光纤到办公室GND General Average 总平均值GPC Gain Bandwidth 增益带宽GPIB Generic Flow Control 一般流量控制GPS Greenwich Mean Time 格林威治标准时间Ground 接地GSM General Purpose Computer 通用接口GVFS General Purpose Interface Bus 通用接口总线HA Global Positioning Satellite 全球定位卫星HB Global Positioning System 全球定位系统HC Global System for Mobile Communication 全球移动通信系统HCT General Video File Server 通用视频文件服务器HD Head Amplifier 前置放大器Head Bus 前端总线HDM Hierarchical Coding 分层编码HDTV Home Communication Terminal 家庭通信终端HDVS High Definition 高清晰度HF Horizontal Drive 水平驱动（脉冲HFC High Density Modulation 高密度调制HFCT High Definition Television 高清晰度电视HIS High Definition Video System 高清晰度视频系统Hi-Fi High Frequency 高频HPA Hybrid Fiber Coaxial 光纤同轴电缆混合网HPF HQAD Hybrid Fiber Concentric Twisted Pair Wire 混合光纤同轴双绞线HS Home Information System 家庭信息系统HSC High-Fidelity 高保真（度High Power Amplifier 大功率放大器HSDB High-Pass Filter 高通滤波器HT High Quality Audio Disc 高品位音频光盘HTT HTTP Horizon Scanner 水平扫描HTU High Speed Camera System 高速摄像机系统IA High Speed Channel 高速信道IB High Speed Data Broadcast 高速数据广播High Tension 高压Home Television Theatre 家庭电视影院IBC Hyper Text Transmission Protocol 超文本传输协议Home Terminal Unit 家庭终端单元Information Access 信息存取IBG International Broadcasting 国际广播IC Interface Bus 接口总线IDCT Internal Bus 内部总线 IF Integrated Broadband Communication 综合宽带通信IM International Broadcasting Center 国际广播中心IMTV International Broadcasting Convention （欧洲国际广播会议IN Inter Block Gap 字组间隔INFO INS Integrated Circuit 集成电路IOCS Inverse Discrete Cosine Transform 离散余弦逆变换IOD Intermediate Frequency 中频IP Interface Module 接口模块Interactive Multimedia Television 交互式多媒体电视IPC Integrated Network 综合网IPD Integrated Network Using Fiber Optics 光纤综合网IPTC Information Network System 信息网络系统IRD Input-Output Control System 输入/输出控制系统IS Information On Demand 点播信息Input Power 输入功率Internet Protocol 因特网协议ISA Information Processing Center 信息处理中心ISAN Interactive Program Directory 交互式节目指南International Press Telecommunication Council 国际新闻通信委员会ISO ISRC Integrated Receiver/Decoder 综合接收机/解码器ISSI Information Superhighway 信息高速公路IT Interactive Service 交互业务 ITS International Standard 国际标准Industry Standard Architecture 工业标准总线Integrated Service Analog Network 综合业务模拟网ITU International Standard Audiovisual Number 国际标准音视频编号ITV International Standards Organization 国际标准化组织International Standard Recording Code 国际标准记录码IU Inter-Switching System Interface 交换机间系统接口IVCS Interline Transfer 行间转移IVDS Insertion Test Signal 插入测试信号IVOD Intelligent Traffic System 智能交通系统IVS International Telecommunication Service 国际电信业务JB International Telecommunications Union 国际电信联盟JCTA Industrial Television 工业电视JPEG Interactive Television 交互式电视JSB Information Unit 信息单元KB Intelligent Video Conferencing System 智能视频会议系统LAN Interactive Video Data Service 交互视频数据业务LBC Interactive Video On Demand 交互点播电视LC Interactive Video System 交互视频系统LCD Junction Box 接线盒Japan Cable Television Association ***有线电视协会LD Joint Photographic Experts Group 联合图片专家组LDTV Japan Satellite Broadcasting Inc ***广播卫星公司IED Keyboard 键盘LF Local Area Network 局域网LFE Low Bit-rate Coding 低码率编码LFO Lossless Coding 无损编码LI Liquid Crystal Display 液晶显示器LMDS Light Coupled Device 光耦合器件LNA Laser Diode 激光二极管LO Low Definition Television 低分辨率数字电视LPF Light-Emitting Diode 发光二极管LRC Low Frequency 低频LS Low Frequency Response 低频响应LSD Low Frequency Oscillator 低频振荡器LSI Level Indicator 电平指示器LSN Local Microwave Distribution System 本地微波分配系统LTC Low Noise Amplifier 低噪声放大器LVD Local Oscillator 本地振荡器LVR Low Pass Filter 低通滤波器Longitudinal Redundancy Checking 纵向冗余校验Light Source 光源MAC Large Screen Display 大屏幕显示器MAN Large Scale Integrated Circuit 大规模集成电路MAPI Local Supervision Network 本地监测网MATV Longitudinal Time Code 纵向时间码 MC Laser Vision Disc 激光电视唱片Laser Video Recording System 激光视盘录制系统Multiplexed Analog Components 复用模拟分量Metropolitan Area Network 都市网MCI Multimedia Application Programming Interface 多媒体应用编程接口MCPC Master Antenna Television 共用天线电视MCR Main Control 主控Media Composer 非线性媒体编辑系统MD Motion Compensation 运动补偿MDM Multimedia Communication 多媒体通信MDOP Media Control Interface 媒体控制接口MF Multi-Channel Per Carrier 多路单载波MIC Master Control Room 主控制室MIDI Mobile Control Room 转播车，移动控制室MMDS Magnetic Drum 磁鼓MODEM Multimedia Data Management 多媒体数据管理MOL Multimedia Data Operation Platform 多媒体数据操作平台MON Medium Frequency 中频MPC Microphone 传声器，话筒MPEG Musical Instrument Digital Interface 乐器数字接口MPO Multi-Channel Microwave Distribution System 微波多点分配系统Modulator And Demodulator 调制解调器MR Maximum Output Level 最大输出电平MSC Monitor 监视器，监听器。

介绍电视机历史的英语作文The Evolution of Television: A Brief History.The television, often referred to as the "TV," has been a fixture in homes and living rooms for decades, transforming the way people consume entertainment and information. Its history spans more than a century, fromits humble beginnings as a laboratory curiosity to its current status as a ubiquitous and essential piece of technology.The early years of television were marked by experiments and prototypes. In the late 19th century, scientists began exploring the concept of transmitting visual images over a distance. These early experiments involved simple mechanical systems that transmitted still images. It was not until the 20th century that the first true television systems emerged.One of the pioneers in the field was John Logie Baird,a British inventor who is credited with developing thefirst working television system in 1925. Baird's system transmitted black-and-white images using a scanning disk and a cathode ray tube. Although the images were crude and the transmission range limited, it marked a significant milestone in the history of television.The 1930s saw further advancements in television technology. The introduction of electronic scanning and the development of better antennas and amplifiers improved the quality of transmitted images. By the end of the decade, television sets had become more affordable, and the medium was starting to gain popularity.The 1940s and 1950s were a period of rapid growth for television. The Second World War accelerated the development of technology, and after the war, television sets became more widely available. Networks such as NBC, ABC, and CBS emerged, and television programming diversified, including news, sports, and entertainment shows.The 1950s marked a significant milestone in television history with the introduction of color television. Thefirst color broadcasts were experimental and limited, but by the end of the decade, color television sets had become more common, and color programming was becoming more widespread.The 1960s and 1970s saw further advancements in television, including the development of satellite television and the launch of cable television systems. These advancements expanded the reach of television programming, making it available to more people in more places.The advent of digital technology in the 1980s and 1990s marked a new era for television. Digital television offered higher picture quality, better sound, and more programming options. It also paved the way for the development of streaming services and on-demand content, which further transformed the television landscape.Today, television has evolved into a powerful mediumthat reaches billions of people worldwide. It has become a platform for entertainment, education, news, and social interaction. The television set has also transformed, evolving from bulky analog devices to sleek, high-definition digital displays.In conclusion, the history of television is a fascinating tale of technological advancements and cultural transformation. From its humble beginnings as a laboratory curiosity to its current status as a ubiquitous and essential piece of technology, television has played a pivotal role in shaping the way people live and consume media. As we look to the future, it is exciting to imagine what new advancements and innovations will further transform this remarkable medium.。

电视发展史英文作文英文回答：The history of television can be traced back to thelate 19th century, when scientists began experimenting with ways to transmit images over electrical signals. In 1884, Paul Nipkow developed the Nipkow disk, a mechanical device that could scan images and convert them into electrical signals. However, it was not until the 1920s that significant progress was made in television development.In 1923, Vladimir Zworykin invented the iconoscope, a camera tube that could convert light into electrical signals. This invention paved the way for the development of practical television systems. In 1926, John Logie Baird demonstrated the first working television system, which used a mechanical scanning disk to create images.In the 1930s, electronic scanning replaced mechanical scanning, resulting in clearer and more stable images. In1936, the British Broadcasting Corporation (BBC) began the first regular television broadcasts. By the end of the decade, television sets were becoming increasingly popular in homes and businesses.The development of color television began in the 1940s, with several competing systems emerging. In 1953, the National Television System Committee (NTSC) adopted a color standard that became the basis for color television broadcasting in the United States. By the 1960s, color television had become the dominant standard.The 1970s saw the introduction of the video cassette recorder (VCR), which allowed viewers to record and playback television programs. In the 1980s, cabletelevision emerged as a major competitor to traditional broadcast television, offering a wider variety of channels and programming.The 1990s marked the rise of digital television, which offered higher-quality images and sound. In 2009, the United States transitioned to digital televisionbroadcasting, phasing out analog signals.Today, television is an integral part of modern life, providing entertainment, information, and education. Withthe advent of streaming services and internet-connected televisions, viewers have more choices than ever before.The future of television is uncertain, but it is likely to continue to evolve as technology advances.中文回答：电视发展史。