The document provides information about the key components of a television and how they are manufactured and used. It discusses the major components including the housing made of plastic, the picture tube made of precision glass, the audio system, and electronic parts. It describes the manufacturing processes for these components and how they work together. The document also briefly discusses recycling of materials and waste from television manufacturing.
The document summarizes the history and development of television. It describes how early inventors in the 1800s began experimenting with electromechanical television systems, but the first publicly demonstrated working system was in 1925. Color television was first demonstrated in the 1920s and field tests began in the 1940s, but the first color broadcast to the public did not occur until 1951. The document also provides details on how televisions are manufactured, from molding the plastic housing to assembling the electronic components and picture tube. Quality control testing ensures the safety and functionality of the finished product.
This document discusses visual media including photography, movies, and television. It provides a brief history of photography from the camera obscura to Daguerre's daguerreotype. For movies, it discusses the early innovations of Edison and the Lumières and the growth of Hollywood. It also outlines the major studios, production process, marketing, and distribution model of the modern movie industry. For television, it summarizes the growth from early systems to the dominance of cable and satellite television today.
A brief explanation about television good for short presentations with a non technical approach for easy explanation and questions to answer upon enjoy....
This document provides a timeline of exposure to traditional and new media from 2001-2010. It describes film cameras, radio, television, brick games, DVD players, MP3 players, flip phones, and the Friendster social networking site. Film cameras capture images on photographic film and protect the film in a light-tight case. Radio transmits information through radio waves and requires an antenna. Television broadcasts networks and limited programming, and became a popular source of entertainment and education. Brick games are portable electronic game devices. DVD players play optical discs connected to televisions. MP3 players compress audio into small files. Flip phones fold such that the display covers the keypad. Originally, Friendster was a social gaming site and networking service that
Open air cinema in Melbourne and all over AustraliaOlga Kustova
Open Air Cinema is gaining popularity all over Australia. Breathtaking scenery together with movie magic create unforgetable experience. Smart Digital Australia brings this experience to you with inflatable outdoor cinema systems.
Television has evolved from early mechanical systems to modern digital technology. Key events included Paul Nipkow's 1884 scanning disk, John Logie Baird's 1927 mechanical television demonstration, and Philo Farnsworth's 1927 invention of the first electronic television system. Early broadcasts were in black and white but color television was developed starting in the 1900s. Analog broadcasts transitioned to digital starting in the 2000s, improving picture and sound quality. Television has grown to become a major form of entertainment, information, and communication over the decades.
This document discusses the origins and development of television from the late 19th century through the modern era. It covers early innovations like the cathode ray tube, the patents battle between Vladimir Zworykin and Philo Farnsworth, and the establishment of technical standards. It also discusses the rise of cable television through innovations like satellites and the development of basic and premium cable services. New technologies like home video, DVRs, and online streaming have further changed viewing habits and led to the convergence of television and the internet.
The document summarizes the history and development of television. It describes how early inventors in the 1800s began experimenting with electromechanical television systems, but the first publicly demonstrated working system was in 1925. Color television was first demonstrated in the 1920s and field tests began in the 1940s, but the first color broadcast to the public did not occur until 1951. The document also provides details on how televisions are manufactured, from molding the plastic housing to assembling the electronic components and picture tube. Quality control testing ensures the safety and functionality of the finished product.
This document discusses visual media including photography, movies, and television. It provides a brief history of photography from the camera obscura to Daguerre's daguerreotype. For movies, it discusses the early innovations of Edison and the Lumières and the growth of Hollywood. It also outlines the major studios, production process, marketing, and distribution model of the modern movie industry. For television, it summarizes the growth from early systems to the dominance of cable and satellite television today.
A brief explanation about television good for short presentations with a non technical approach for easy explanation and questions to answer upon enjoy....
This document provides a timeline of exposure to traditional and new media from 2001-2010. It describes film cameras, radio, television, brick games, DVD players, MP3 players, flip phones, and the Friendster social networking site. Film cameras capture images on photographic film and protect the film in a light-tight case. Radio transmits information through radio waves and requires an antenna. Television broadcasts networks and limited programming, and became a popular source of entertainment and education. Brick games are portable electronic game devices. DVD players play optical discs connected to televisions. MP3 players compress audio into small files. Flip phones fold such that the display covers the keypad. Originally, Friendster was a social gaming site and networking service that
Open air cinema in Melbourne and all over AustraliaOlga Kustova
Open Air Cinema is gaining popularity all over Australia. Breathtaking scenery together with movie magic create unforgetable experience. Smart Digital Australia brings this experience to you with inflatable outdoor cinema systems.
Television has evolved from early mechanical systems to modern digital technology. Key events included Paul Nipkow's 1884 scanning disk, John Logie Baird's 1927 mechanical television demonstration, and Philo Farnsworth's 1927 invention of the first electronic television system. Early broadcasts were in black and white but color television was developed starting in the 1900s. Analog broadcasts transitioned to digital starting in the 2000s, improving picture and sound quality. Television has grown to become a major form of entertainment, information, and communication over the decades.
This document discusses the origins and development of television from the late 19th century through the modern era. It covers early innovations like the cathode ray tube, the patents battle between Vladimir Zworykin and Philo Farnsworth, and the establishment of technical standards. It also discusses the rise of cable television through innovations like satellites and the development of basic and premium cable services. New technologies like home video, DVRs, and online streaming have further changed viewing habits and led to the convergence of television and the internet.
This presentation discusses TV programs and the television industry. It is presented by 5 group members and covers several topics:
- Types of television systems and the organizations that regulate broadcasting
- Ownership and consolidation in the television industry
- The process of producing and distributing TV programs and getting them on air
- Popular TV genres like news, talk shows, and primetime programming
- Measurement of television audiences and ratings
The document outlines the history of broadcasting from its origins to modern times. It discusses key inventors and innovations that led to the development of radio and television technologies. Some of the earliest developments include Maxwell's theory of electromagnetic waves in 1855 and Marconi sending the first wireless signal in 1901. Over decades, inventors continued improving the technologies, with the first radio broadcasts in the early 1900s and commercial television debuting in 1939. Both media grew rapidly in popularity and changed how people received information and entertainment, helping to shift societies with their widespread adoption.
COM 110 | Chapter 2: History of Cable, Home Video, ad the InternetVal Bello
Ed Parsons invented cable television in 1949 by running a cable from a TV tower to his home in Astoria, Oregon to receive better reception. Others began doing the same, forming the origins of CATV. Throughout the 1950s-1970s, the FCC regulated cable growth to protect broadcast TV, limiting cable to smaller markets. In the 1980s, deregulation allowed cable to expand and compete with satellite providers like DirecTV. Home video emerged with the VCR in 1975 and later DVDs provided alternate content sources. The Internet began as a military network but opened to academics and commercial use, with the World Wide Web popularizing online access in the 1990s. Cable, satellite, internet and streaming now offer consumers numerous entertainment
The document provides a history of the development of television from its invention in the 1920s through modern digital television. It discusses the early experiments with television, the start of broadcast television in the late 1930s and 1940s, the rise of cable television beginning in the 1970s, the conversion to digital broadcasting in 2009, and the increasing diversity of content available on television over time. It also outlines some of the key individuals and innovations that helped shape the television industry such as Philo Farnsworth inventing the television, the creation of cable networks like HBO and CNN, and Ted Turner's pioneering of cable television.
Chapter 5 Television And The Power Of Visual Culture SlideshareJill Falk
This document provides an overview of key topics about television that will be covered in Chapter 5, including:
1) A brief history of television from its early adoption in homes in the 1940s-1960s and the transition from analog to digital broadcasting.
2) The decline of the major networks ABC, NBC, and CBS due to factors like time-shifting technologies, increased competition from new networks like Fox, and government regulation.
3) An introduction to economics and market concepts in television like ratings, shares, ownership of stations, and the role of Nielsen in measuring viewership.
This document summarizes the history of television as a networked medium. It discusses how television originated as a military technology and has since evolved from a "box in the corner" to a distributed technology available across multiple devices and platforms through streaming, torrents and cloud services. The document also examines changes in television content from broadcast to niche cable and streaming formats, as well as changes in audience behaviors like binge watching and new forms of viewer-generated video content. Finally, it explores new approaches for researching television as a networked, evolving medium using social metrics and telemetrics.
The document summarizes the history and development of radio technology from the late 19th century through the 1920s. Key points include:
- James Clerk Maxwell and Heinrich Hertz discovered radio waves in the 1860s-1880s, laying the groundwork for wireless communication. Inventors like Marconi, Popov, Tesla, and De Forest then developed early wireless telegraphy.
- The formation of RCA in 1919 consolidated the U.S. radio industry and ensured American dominance globally. David Sarnoff's leadership helped establish NBC as the first radio network in 1926.
- The Radio Act of 1927 established the Federal Radio Commission to regulate stations and allocate frequencies, bringing order to the growing chaos of radio
The document discusses the history of international broadcasting, beginning with the development of radio broadcasting in the 1920s. It then covers the emergence of television broadcasting in the 1930s and the rise of cable TV and satellite TV from the 1960s onward. International radio broadcasting grew with the establishment of stations like the BBC and the use of shortwave bands. Television expanded internationally following early experiments and the start of BBC broadcasts in 1936. Satellite communications in the 1960s allowed cable and satellite TV to further globalize television programming.
Mac129 med102 med122 Television, video and the internetRob Jewitt
This document discusses the changing landscape of television as new technologies have disrupted the linear viewing model. Non-linear viewing through video on demand and content accessed across multiple devices has led to the disintegration of the traditional programming supply chain. There is no consensus definition of television as content can now be watched anywhere and consumption patterns have fragmented. However, television continues to have enormous staying power as a medium and social viewing may help breathe new life into old platforms by making content a more interactive experience. The future of television will likely include new modes of customized, flexible consumption but the role of traditional television is still uncertain.
The document summarizes the history and evolution of television broadcasting from its invention in the 1920s to the growth of cable television in the 1970s and 1980s. It discusses key events like the first public demonstration of television by Philo Farnsworth in 1928, the rise of network television in the 1940s and 1950s, the transition to color television in the 1950s and 1960s, and the development of cable networks by Ted Turner in the 1970s which led to more specialized content and challenged the dominance of the big three networks.
This document discusses the evolution of film technology from its origins to modern digital cinema. It describes how early technological developments like flexible film and synchronized sound influenced movie production. New cameras and film formats in the 1920s-1940s made documentaries and hand-held cinematography possible. Color film and improved lighting allowed for more realistic imagery. Techniques like deep field photography in the 1940s enhanced visual styles. Widescreen and 3D formats in the 1950s sought to immerse audiences. Later, IMAX and digital projection revolutionized the viewing experience. Computer graphics enabled advanced special effects and animated films. Today's technology aims for even greater screen realism and may virtually recreate dead actors. Film has continually adapted to utilize new technologies while also
Chapter 6 - Cable and the Specialization of TelevisionJill Falk
Cable television undermined the network era by providing hundreds of specialized channel options rather than a shared set of broadcast programs. Cable systems pick up broadcast signals via satellite and supply them to homes through wires. The FCC established must-carry rules requiring cable operators to carry local broadcasts, and access channels for public, educational, and government content. This led to "narrowcasting" that targets niche audiences through specialized channels like HGTV and Speed. Direct broadcast satellites like DirecTV and DISH also offer many channel options but had initial higher costs and lacked local channels, which they now provide.
This document compares radio and television. It discusses the development of radio by Marconi in the 1890s and its early use by the BBC in the 1920s. The development of early mechanical and electronic television is also outlined. Key differences are that television's strength is visuals while radio relies on strong audio to excite imagination. However, both can be cheap sources of entertainment, news and education. In the end, the author argues that radio is better than television because it allows listening and working simultaneously with no video or internet needed.
Broadcasting is the distribution of audio and video content to a large audience through various transmission media like radio, television, and the internet. It began with radio broadcasting in the early 1900s and expanded to include television in the 1930s as well as newer digital technologies. There are different types of radio and television broadcasting as well as various methods of funding, programming, and genres for both media. Films are another form of visual storytelling made up of moving images recorded on cameras or created digitally.
Manila Broadcasting Company (MBC) is a major radio and television network in the Philippines owned by the FJE Group. It owns over 500 radio stations throughout the country, making it the largest radio network in Asia. MBC's flagship stations include DZRH for AM and Love Radio for FM, which is currently the #1 FM station in Metro Manila. Aside from radio, MBC has also returned to television broadcasting with a cable TV channel and regional TV affiliates. The company is headquartered in Pasay City.
The Director/producer oversees all creative aspects of a film including performances, set design, and has final approval. The Celebrity Booker contracts actors and follows trends to choose popular celebrities. Runners assist celebrities and crew on set.
A television uses electronic systems to transmit images and sound by converting them into electrical signals. A TV set combines a tuner, display, amplifier and speakers. Early TVs had mechanical components like a Nipkow disk, while modern TVs use cathode ray tubes or flat panel displays like LCD, plasma, OLED and DLP. LCD TVs became widely popular in the 2000s due to their thinness and large sizes. OLED displays are expected to replace other display types due to producing deep black levels without need for backlighting.
The document is a seminar report on field emission displays (FEDs). It provides a history of display technologies, including cathode ray tubes (CRTs), liquid crystal displays (LCDs), plasma display panels (PDPs), and light emitting diodes (LEDs). It then focuses on the working and characteristics of FEDs. FEDs combine advantages of CRTs like high contrast and fast response time with flat panel packaging. They offer potential benefits over LCDs like lower power consumption. The report discusses FED technology, components, working principle, and applications.
Television works by broadcasting moving pictures and sound over the air or cable to receivers. Old cathode-ray tube (CRT) TVs use an electron gun to sweep across a phosphor screen and build up the picture, while modern flat screen TVs like LCD and plasma have millions of pixels that can be individually switched on or off to display an image. Televisions receive signals, separate them into video and audio, and use different circuits and technologies to recreate both the moving picture and synchronized sound.
Modern displays have evolved significantly over time. Early displays included CRTs (cathode ray tubes), which were large, power-intensive, and had limited resolution. TFT (thin film transistor) LCD displays then became popular, using thin film transistors to control each pixel for faster refresh rates. LCDs are now ubiquitous but have limited viewing angles. LED displays then emerged, using arrays of light-emitting diodes for backlighting to provide brighter images with better color and contrast than LCDs. The latest technology is OLED (organic light-emitting diode) displays, where each pixel internally emits its own light for perfect black levels and wider viewing angles compared to LCDs. Display technologies continue advancing toward thinner,
Basic Fundamental Electronics by D-Sarda PART IVDinesh Sarda
Philo Taylor Farnsworth invented electronic television in 1927 by successfully demonstrating a television system in San Francisco. The basic components of a television are pixels, which are the smallest controllable elements that make up the image on screen, and a cathode ray tube. A cathode ray tube uses an electron gun and fluorescent screen to create images and contains a heated filament cathode. When electrons hit phosphor dots on the screen, they glow different colors to form the visible picture. Cathode ray tubes were commonly used in early television but have disadvantages like large size, potential health hazards from radiation, and risk of implosion.
Polymer light guides for slim sensor TV integration - presentation of TPVision during the Change2Micro event 'Innovation through polymer microtechnology'.
This presentation discusses TV programs and the television industry. It is presented by 5 group members and covers several topics:
- Types of television systems and the organizations that regulate broadcasting
- Ownership and consolidation in the television industry
- The process of producing and distributing TV programs and getting them on air
- Popular TV genres like news, talk shows, and primetime programming
- Measurement of television audiences and ratings
The document outlines the history of broadcasting from its origins to modern times. It discusses key inventors and innovations that led to the development of radio and television technologies. Some of the earliest developments include Maxwell's theory of electromagnetic waves in 1855 and Marconi sending the first wireless signal in 1901. Over decades, inventors continued improving the technologies, with the first radio broadcasts in the early 1900s and commercial television debuting in 1939. Both media grew rapidly in popularity and changed how people received information and entertainment, helping to shift societies with their widespread adoption.
COM 110 | Chapter 2: History of Cable, Home Video, ad the InternetVal Bello
Ed Parsons invented cable television in 1949 by running a cable from a TV tower to his home in Astoria, Oregon to receive better reception. Others began doing the same, forming the origins of CATV. Throughout the 1950s-1970s, the FCC regulated cable growth to protect broadcast TV, limiting cable to smaller markets. In the 1980s, deregulation allowed cable to expand and compete with satellite providers like DirecTV. Home video emerged with the VCR in 1975 and later DVDs provided alternate content sources. The Internet began as a military network but opened to academics and commercial use, with the World Wide Web popularizing online access in the 1990s. Cable, satellite, internet and streaming now offer consumers numerous entertainment
The document provides a history of the development of television from its invention in the 1920s through modern digital television. It discusses the early experiments with television, the start of broadcast television in the late 1930s and 1940s, the rise of cable television beginning in the 1970s, the conversion to digital broadcasting in 2009, and the increasing diversity of content available on television over time. It also outlines some of the key individuals and innovations that helped shape the television industry such as Philo Farnsworth inventing the television, the creation of cable networks like HBO and CNN, and Ted Turner's pioneering of cable television.
Chapter 5 Television And The Power Of Visual Culture SlideshareJill Falk
This document provides an overview of key topics about television that will be covered in Chapter 5, including:
1) A brief history of television from its early adoption in homes in the 1940s-1960s and the transition from analog to digital broadcasting.
2) The decline of the major networks ABC, NBC, and CBS due to factors like time-shifting technologies, increased competition from new networks like Fox, and government regulation.
3) An introduction to economics and market concepts in television like ratings, shares, ownership of stations, and the role of Nielsen in measuring viewership.
This document summarizes the history of television as a networked medium. It discusses how television originated as a military technology and has since evolved from a "box in the corner" to a distributed technology available across multiple devices and platforms through streaming, torrents and cloud services. The document also examines changes in television content from broadcast to niche cable and streaming formats, as well as changes in audience behaviors like binge watching and new forms of viewer-generated video content. Finally, it explores new approaches for researching television as a networked, evolving medium using social metrics and telemetrics.
The document summarizes the history and development of radio technology from the late 19th century through the 1920s. Key points include:
- James Clerk Maxwell and Heinrich Hertz discovered radio waves in the 1860s-1880s, laying the groundwork for wireless communication. Inventors like Marconi, Popov, Tesla, and De Forest then developed early wireless telegraphy.
- The formation of RCA in 1919 consolidated the U.S. radio industry and ensured American dominance globally. David Sarnoff's leadership helped establish NBC as the first radio network in 1926.
- The Radio Act of 1927 established the Federal Radio Commission to regulate stations and allocate frequencies, bringing order to the growing chaos of radio
The document discusses the history of international broadcasting, beginning with the development of radio broadcasting in the 1920s. It then covers the emergence of television broadcasting in the 1930s and the rise of cable TV and satellite TV from the 1960s onward. International radio broadcasting grew with the establishment of stations like the BBC and the use of shortwave bands. Television expanded internationally following early experiments and the start of BBC broadcasts in 1936. Satellite communications in the 1960s allowed cable and satellite TV to further globalize television programming.
Mac129 med102 med122 Television, video and the internetRob Jewitt
This document discusses the changing landscape of television as new technologies have disrupted the linear viewing model. Non-linear viewing through video on demand and content accessed across multiple devices has led to the disintegration of the traditional programming supply chain. There is no consensus definition of television as content can now be watched anywhere and consumption patterns have fragmented. However, television continues to have enormous staying power as a medium and social viewing may help breathe new life into old platforms by making content a more interactive experience. The future of television will likely include new modes of customized, flexible consumption but the role of traditional television is still uncertain.
The document summarizes the history and evolution of television broadcasting from its invention in the 1920s to the growth of cable television in the 1970s and 1980s. It discusses key events like the first public demonstration of television by Philo Farnsworth in 1928, the rise of network television in the 1940s and 1950s, the transition to color television in the 1950s and 1960s, and the development of cable networks by Ted Turner in the 1970s which led to more specialized content and challenged the dominance of the big three networks.
This document discusses the evolution of film technology from its origins to modern digital cinema. It describes how early technological developments like flexible film and synchronized sound influenced movie production. New cameras and film formats in the 1920s-1940s made documentaries and hand-held cinematography possible. Color film and improved lighting allowed for more realistic imagery. Techniques like deep field photography in the 1940s enhanced visual styles. Widescreen and 3D formats in the 1950s sought to immerse audiences. Later, IMAX and digital projection revolutionized the viewing experience. Computer graphics enabled advanced special effects and animated films. Today's technology aims for even greater screen realism and may virtually recreate dead actors. Film has continually adapted to utilize new technologies while also
Chapter 6 - Cable and the Specialization of TelevisionJill Falk
Cable television undermined the network era by providing hundreds of specialized channel options rather than a shared set of broadcast programs. Cable systems pick up broadcast signals via satellite and supply them to homes through wires. The FCC established must-carry rules requiring cable operators to carry local broadcasts, and access channels for public, educational, and government content. This led to "narrowcasting" that targets niche audiences through specialized channels like HGTV and Speed. Direct broadcast satellites like DirecTV and DISH also offer many channel options but had initial higher costs and lacked local channels, which they now provide.
This document compares radio and television. It discusses the development of radio by Marconi in the 1890s and its early use by the BBC in the 1920s. The development of early mechanical and electronic television is also outlined. Key differences are that television's strength is visuals while radio relies on strong audio to excite imagination. However, both can be cheap sources of entertainment, news and education. In the end, the author argues that radio is better than television because it allows listening and working simultaneously with no video or internet needed.
Broadcasting is the distribution of audio and video content to a large audience through various transmission media like radio, television, and the internet. It began with radio broadcasting in the early 1900s and expanded to include television in the 1930s as well as newer digital technologies. There are different types of radio and television broadcasting as well as various methods of funding, programming, and genres for both media. Films are another form of visual storytelling made up of moving images recorded on cameras or created digitally.
Manila Broadcasting Company (MBC) is a major radio and television network in the Philippines owned by the FJE Group. It owns over 500 radio stations throughout the country, making it the largest radio network in Asia. MBC's flagship stations include DZRH for AM and Love Radio for FM, which is currently the #1 FM station in Metro Manila. Aside from radio, MBC has also returned to television broadcasting with a cable TV channel and regional TV affiliates. The company is headquartered in Pasay City.
The Director/producer oversees all creative aspects of a film including performances, set design, and has final approval. The Celebrity Booker contracts actors and follows trends to choose popular celebrities. Runners assist celebrities and crew on set.
A television uses electronic systems to transmit images and sound by converting them into electrical signals. A TV set combines a tuner, display, amplifier and speakers. Early TVs had mechanical components like a Nipkow disk, while modern TVs use cathode ray tubes or flat panel displays like LCD, plasma, OLED and DLP. LCD TVs became widely popular in the 2000s due to their thinness and large sizes. OLED displays are expected to replace other display types due to producing deep black levels without need for backlighting.
The document is a seminar report on field emission displays (FEDs). It provides a history of display technologies, including cathode ray tubes (CRTs), liquid crystal displays (LCDs), plasma display panels (PDPs), and light emitting diodes (LEDs). It then focuses on the working and characteristics of FEDs. FEDs combine advantages of CRTs like high contrast and fast response time with flat panel packaging. They offer potential benefits over LCDs like lower power consumption. The report discusses FED technology, components, working principle, and applications.
Television works by broadcasting moving pictures and sound over the air or cable to receivers. Old cathode-ray tube (CRT) TVs use an electron gun to sweep across a phosphor screen and build up the picture, while modern flat screen TVs like LCD and plasma have millions of pixels that can be individually switched on or off to display an image. Televisions receive signals, separate them into video and audio, and use different circuits and technologies to recreate both the moving picture and synchronized sound.
Modern displays have evolved significantly over time. Early displays included CRTs (cathode ray tubes), which were large, power-intensive, and had limited resolution. TFT (thin film transistor) LCD displays then became popular, using thin film transistors to control each pixel for faster refresh rates. LCDs are now ubiquitous but have limited viewing angles. LED displays then emerged, using arrays of light-emitting diodes for backlighting to provide brighter images with better color and contrast than LCDs. The latest technology is OLED (organic light-emitting diode) displays, where each pixel internally emits its own light for perfect black levels and wider viewing angles compared to LCDs. Display technologies continue advancing toward thinner,
Basic Fundamental Electronics by D-Sarda PART IVDinesh Sarda
Philo Taylor Farnsworth invented electronic television in 1927 by successfully demonstrating a television system in San Francisco. The basic components of a television are pixels, which are the smallest controllable elements that make up the image on screen, and a cathode ray tube. A cathode ray tube uses an electron gun and fluorescent screen to create images and contains a heated filament cathode. When electrons hit phosphor dots on the screen, they glow different colors to form the visible picture. Cathode ray tubes were commonly used in early television but have disadvantages like large size, potential health hazards from radiation, and risk of implosion.
Polymer light guides for slim sensor TV integration - presentation of TPVision during the Change2Micro event 'Innovation through polymer microtechnology'.
The cathode ray tube consists of four main sections: an electron gun, deflection system, fluorescent screen, and glass tube and base. The electron gun produces electrons through thermionic emission. The deflection system uses electric and magnetic fields to control the electrons horizontally and vertically. The fluorescent screen displays where the electrons hit by emitting light. The glass tube and base protect the whole assembly and allow electrical connections. Common applications of CRTs include oscilloscopes, radar displays, televisions, and computer monitors.
The document discusses different types of computer monitors and display technologies. It describes CRT monitors which use cathode ray tubes and are economical but can cause eye strain. Flat panel displays like LCD, LED, OLED are thinner and cause less eye strain but are more expensive. Other display technologies discussed include plasma display panels, digital light processing, electroluminescent displays, field emission displays, and nano-emissive displays. The document also covers different audio channel technologies including mono, stereo, and surround sound systems.
The document discusses different types of displays including CRT, LCD, OLED, and smart TVs. CRT was the standard until recent years but has issues like bulkiness. LCD became popular due to efficiency but has limited viewing angles. OLED provides benefits like thinness and flexibility but has higher costs. Smart TVs integrate internet and allow access to online content and applications in an interactive way. 3D TV uses techniques like binocular parallax to provide depth perception.
This document discusses various television technologies. It describes flat panel TVs including plasma and LCD, as well as projection TVs that are rear-projection or front-projection using technologies like DLP, LCD, and LCoS. Tube or CRT TVs are also discussed. Key aspects covered include screen resolutions, aspect ratios, sound systems, video and audio connections, and common external components used with TVs.
The document describes the design and fabrication of a MEMS capacitive microphone. MEMS microphones use a micro-machined diaphragm to detect sound waves and convert them to electrical signals. This microphone was fabricated using a silicon wafer with a sputtered aluminum backplate and photoresist sacrificial layer. Layers of silicon dioxide, aluminum and photoresist were patterned to create the diaphragm, anchors and backplate. The sacrificial layer was then removed to release the diaphragm. Testing showed the microphone could successfully detect sounds when connected to an external amplifier. Applications of MEMS microphones include phones, hearing aids, and audio recording equipment.
The document discusses types of monitors, focusing on CRT monitors. It explains that a CRT monitor uses an electron beam to excite phosphor dots on the screen to display an image. The beam travels across millions of red, green, and blue dots. Advantages are high brightness, quality, and contrast. Disadvantages include large size, potential health hazards from radiation, overheating risks, heavy weight, and headaches from constant refreshing.
Enensys -Content Repurposing for Mobile TV NetworksSematron UK Ltd
The document discusses content repurposing for mobile TV networks. It describes the need to adapt existing TV content from different formats to fit on small mobile screens. The challenges of transcoding content from standard definition to mobile TV formats are discussed. Different techniques and algorithms must be used to optimize the transcoding process and integrate content smoothly into mobile TV systems. The source TV content comes from satellite, cable or terrestrial networks in digital formats like MPEG-2. The target is mobile TV, which has size constraints of 2-5 inch screens and lower resolutions than standard TV. Content must be adapted to meet these constraints while preserving quality.
The document discusses the cathode ray tube (CRT) technology used in early computer monitors and televisions. It describes how a CRT works by using an electron gun to shoot a beam of electrons that excite phosphors on the screen, producing an image. The document outlines the history of the CRT from its discovery in the 1860s to its use in early TVs and monitors. It also discusses the advantages of CRTs like good color accuracy but notes disadvantages like health risks from radiation and large size.
Right to Die Position PaperPapers should be 2.5-3.5 pages, 12pt..docxSUBHI7
Right to Die Position Paper
Papers should be 2.5-3.5 pages, 12pt. font, double spaced, with APA format.
Position papers will be graded on a standard grading scale (0-100), see rubric attached.
During this class, you have learned about the ethical and legal debate surrounding an individual’s right to die and physician assisted suicide (euthanasia). You have read about the infamous Dr. Kevorkian and seen the very public campaign of Brittany Maynard and her family. At present, a small minority of states allow physician assisted suicide but more will likely follow. The issue of a patient’s right to die with the help of a doctor is more highly debated than ever before.
Suggestions for the structure/questions your paper should address are below, cover as many as you’d like but the important thing is to make a strong argument that is supported directly by course materials:
Begin with your thoughts on this topic before this class, did you think /would you have thought physician assisted suicide was ethical and/or moral on the part of patients and physicians? That it should be legal or illegal? Were your opinions or thoughts shaped by experiences or family/spiritual/cultural background? How have or have not the materials in this class changed your views? Should physician assisted suicide be legal in the US? If so, under what circumstances (for example, a life threatening (terminal) illness with a certain diagnosed prognosis, a second or third doctor checking the prognosis). Kevorkian assisted the deaths of patients who were suffering from debilitating illnesses but were not imminently terminal (they would not die of the disease in the short term). Are there circumstances under which these types of cases should be allowed (currently they are not)? Believing something should/should not be legal is different than choosing it. If it was you, if you found out you had a terminal illness that would end your life horribly, do you know what you would choose? How would it be different if you were very old, say 99? What do you see in the future for our nation, do you see more states legalizing until it is federal law? Do you think it will be overturned in the states where it is currently legal?
*Note* The reason I have chosen this topic for a position paper is that there is plenty of support for both sides (the topic of physician assisted suicide is complex and difficult). Please do not choose the position you think I want to hear, as I think there are compelling arguments for both sides. A successful paper will effectively draw on the course materials throughout the narrative of the paper. An excellent paper will draw from a range of course materials (textbook, supplemental readings, videos). I have attached a grading rubric in another document to guide you in crafting an excellent paper, good luck!
Communication Systems
Chapter 11 Hacker
ETSC 101 Chapter 11 Hacker
1
ETSC 101 Chapter 11 Hacker
Source of the message is where the message is coming fro ...
Television antennas provide access to channels and stations to satisfy different tastes, but living with a bad antenna can be frustrating. Most antenna problems can be fixed with simple steps like checking wires, trying a new splitter, changing the antenna location and orientation, or repairing the coax cable by cutting and reconnecting parts. Proper positioning of the antenna and ensuring it matches transmitter distances are also important to resolve reception issues.
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Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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3. Jens
Martensson
Introduction
3
Television is a system for transmitting visual
images and sound that are reproduced on
screens, chiefly used to broadcast programs for
entertainment, information, and education. The
television set has become a commonplace in
many households, businesses, and institutions.
It is a major vehicle for advertising. Few
inventions have had as much effect on
contemporary American society as television.
Jeff Greenfield, a media observer, stated
“Television is the pervasive American pass time
cutting through geographic, ethnic class and
cultural diversity, it is the single binding thread
of this country, the one experience that touches
young and old, rich and poor, learned and
illiterate (Biagi, 2005).
4. Jens
Martensson
4
Major components and their materials
Raw Materials
The television consists of four principle sets of parts, including the exterior or housing, the audio reception and speaker system, the picture tube, and
a complicated mass of electronics including cable and antennae input and output devices, a built-in antenna in most sets, a remote control receiver,
computer chips, and access buttons. The remote control or "clicker" may be considered a fifth set of parts.
The housing of the set is made of injection-molded plastic, although wood cabinets are still available for some models. Metals and plastics also
comprise the audio system. The picture tube requires precision-made glass, fluorescent chemical coatings, and electronic attachments around and at
the rear of the tube. The tube is supported inside the housing by brackets and braces molded into the housing. The antennae and most of the input-
output connections are made of metal, and some are coated with special metals or plastic to improve the quality of the connection or insulate the
device. The chips, of course, are made of metal, solder, and silicon.
Design
The design of the television requires input and teamwork on the part of a range of design engineers. Audio, video, plastics, fiber optics, and
electronics engineers all participate in conceptualizing a new television design and the technical and sales features that will set it apart. A new
design of television may have one or many new applications of technology as features. It may only be a different size of an existing model, or it may
include an array of new features such as an improved sound system, a remote control that also controls other entertainment devices, and an
improved screen or picture, such as the flat black screens that have entered the marketplace recently.
Conceptual plans for the new set are produced by the engineering team. The concept may change and be redrawn many times before the design is
preliminarily approved for manufacture. The engineering specialists then select and design the components of the set, and a prototype is made to
prove out the design. The prototype is essential, not only for confirming the design, appearance, and function of the set, but also for production
engineers to determine the production processes, machining, tools, robots, and modifications to existing factory production lines that also have to be
designed or modified to suit the proposed new design. When the prototype passes rigid reviews and is approved for manufacture by management,
detailed plans and specifications for design and production of the model are produced. Raw materials and components manufactured by others can
then be ordered, the production line can be constructed and tested, and the first sets can begin their ride down the assembly line.
5. Jens
Martensson
5
The Manufacturing Process
Housing
· 1 Almost all television housings are made of plastic by the process of injection molding, in which precision molds are made and liquid plastic is
injected under high pressure to fill the molds. The pieces are released from the molds, trimmed, and cleaned. They are then assembled to complete the
housing. The molds are designed so that brackets and supports for the various components are part of the housing.
Picture tube
· 2 The television picture tube, or cathode ray tube (CRT), is made of precision glass that is shaped to have a slightly curved plate at the front or screen.
It may also have a dark tint added to the face plate glass, either during production of the glass or by application directly to the inside of the screen.
Darker face plates produce improved picture contrast. When the tube is manufactured, a water suspension of phosphor · chemicals is allowed to settle
on the inside of the face plate, and this coating is then overlaid with a thin film of aluminum that lets electrons pass through. The aluminum serves as a
mirror to prevent light from bouncing back into the tube.
· Glass for picture tubes is supplied by a limited number of manufacturers in Japan and Germany. Quantities of the quality of glass needed for picture
tubes are limited, and the emergence of large-screen sets has created a shortage in this portion of the industry. The large screens are also very heavy, so
flat-panel displays using plasma-addressed liquid crystal (PALC) displays were developed in the 1980s. This gas plasma technology uses electrodes to
excite layers of neon or magnesium oxide, so they release ultraviolet radiation that activates the phosphor on the back of the television screen. Because
the gas is trapped in a thin layer, the screen can also be thin and lightweight. Projection TVs use digital micro mirror devices (DMDs) to project their
pictures.
· A shadow mask with 200,000 holes lies immediately behind the phosphor screen; the holes are precisely machined to align the colors emitted by
three electron
beams. Today's best picture tubes have shadow masks that are manufactured from a nickel-iron alloy called Invar; lesser quality sets have masks of
iron. The alloy allows the tube to operate at a higher temperature without distorting the picture, and higher temperatures allow brighter pictures. Rare-
earth elements have also been added to the phosphor coating inside the tube to improve brightness.
· The electrons are fired by three tubular, metal electron guns that are carefully seated in the neck, or narrow end, of the tube. After the electron guns
are placed inside the tube, the picture tube is evacuated to a near vacuum so air does not interfere with the movement of the electrons. The small
opening at the rear of the tube is sealed with a fitted electrical plug that will be positioned near the back of the set. A deflection yoke, consisting of
several electromagnetic coils, is fitted around the outside of the neck of the picture tube. The coils cause pulses of high direct the scanning electron
beams in the proper direction and speed.
Audio system
· 3 The housing also contains fittings for speakers, wiring, and other parts of the audio system. The speakers are usually made by a specialized
manufacturer to the specifications of the television manufacturer, so they are assembled in the set as components or a subassembly. Electronic sound
6. Jens
Martensson
6
Electronic parts
· 4 When the picture tube and the audio speakers and attachments are assembled in the set, other electronic elements are added to
the rear of the set. The antennae, cable jacks, other input and output jacks, the electronics for receiving remote control signals, and
other devices are prepared by specialty contractors or as subassemblies else-where on the assembly line. They are then mounted in
the set, and the housing is closed.
7. Jens
Martensson
Use of Components
7
Cathode Ray Tube
A cathode ray tube enables an image to be seen on the screen of the television. It works by sending out a beam of electrons which
then land on the TV screen and create a visual display.
Most televisions used today utilize a cathode ray tube (CRT) inside of the TV to display images. The cathode is a heated filament
similar to the filament in a typical light bulb, and it is placed within a vacuum inside a glass tube while a stream of electrons shoots from
the heated cathode into the vacuum.
Light Valve
The light valve works in conjunction with the cathode ray tube. It provides a fixed source of light that essentially lights up the electrons
from the cathode ray tube so that they can be seen on the screen. Light valves have improved in quality as technology has advanced.
High-definition TVs provide clearer and brighter pictures as a result of more sophisticated light valves.
8. Jens
Martensson
8
Logic Board
The electrical wiring within a TV set consists of transformers, coils, chokes and resistors. These components are secured on a logic
board. The circuit provides the correct electrical supply and sends messages to the various components of the TV set. It is the brain of
the TV and enables it to function.
Capacitors
A capacitor is a device that stores an electrical charge between two metal plates and releases the energy as light. The capacitor in a TV
set would give you a severe electrical shock if you touched it because it stores a large amount of power.
9. Jens
Martensson
9
Screen and Surround
The most obvious components of a TV are the ones you can see. These are the screen and the TV surround. The material the screen is
made from varies. Traditional screens were made from glass; however, more modern units, such as LCD and plasma screens, are made
from plastic. The surround of the TV is the outer shell which protects the internal components of the TV listed previously. This shell is usually
made of a durable plastic.
Anodes
Between the cathode and the TV a set of anodes are installed to focus the stream of electrons into a tight beam and to accelerate the
electron beam. Then the accelerated electron beam is sent by the anodes through the vacuum in the tube until it hits the screen of the TV on
the other side
10. Steering Coil
Steering coils consist of copper winding coils that are capable of creating magnetic fields inside the tube to direct the electron beam. There
are two sets of coils inside of a CTR that direct the beam as to which direction to go and where to hit the screen on the other side; one set of
coils creates a magnetic field that directs the electron beam vertically and the other set moves the beam horizontally.
TV Phosphors
Phosphors pertain to any material that emits visible light when exposed to radiation caused by either ultraviolet light or by a beam of
electrons. In a CTR, and thus in a TV, phosphor coats the inside of the screen, and when the electron beam strikes the phosphor, it makes
the screen glow. To produce color for color TVs, three phosphors are arranged as dots that emit red, green and blue light, along with three
electron beams that illuminate the three different colors together to generate and display any other colors on the light spectrum.
11. Byproducts/Waste
There are no byproducts from the manufacture of the television, although many other devices are a part of the television "family" and are often produced by
the same manufacturer. These include the remote control, computer monitors, video recorders (VCRs), laser disc players, and a host of devices that may
require compatible design and components. Specialized televisions are produced for some industries, including television studios and mobile broadcast
facilities, hospitals, and for surveillance applications for public safety and use in inaccessible or dangerous locations.
Wastes may include metals, plastics, glass, and chemicals. Metals, plastics, and glass are isolated and recycled unless they have been specially treated or
coated. Chemicals are carefully monitored and controlled; often, they can be purified and recycled, so disposal of hazardous wastes can be minimized.
Hazardous waste plans are in effect in all stages of manufacture, both to minimize quantities of waste and to protect workers.
Conclusion
Television has changed drastically from the cathode ray tube in the late 1800’s, to the Community Antenna televisions in 1940’s, to viewing
television online in 2008 (Campbell et al, 2012). Television provides hours of entertainment and news for our viewing purposes. The Three
Major Networks: NBC, CBS, and ABC provided a beginning for other broadcast companies. The programs that they offered spanned from
situational comedies to dramas, which is very similar to television programming today. Cable television, although very costly, provides a means
for several different types of television programming and advertisements. Advertising will continue to have an economic impact on television
because this is a major medium for advertising firms to reach the consumers. With the rise of social media, audiences will be able to interact
with television shows like never before. They will continue to be able to use their electronic devices to view television shows and respond to
television shows quickly and reach the masses. The future of television is inevitable, but will knowingly have an impact on our society as it has
from the beginning of its existence.
12. Thank
You
This presentation is made by
Rajdeep Tarafdar – 19101103019
Sandipan Kar - 19101103014
Arpandip Jana – 19101103015
Md Parwez Alam- 19101103013
Sourav karmakar- 19101103011
Debargha Das - 19101103018