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Television Production Essay

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ABSTRACT Television has been an excellent medium for entertainment and information ever since the invention of the electron scanning tube in 1923 by Vladimir Kosma Zworykin, who is considered the father of the modern television. With the conversion to digital format 1080i in 1998, there has been a boom in the production of different types and technologies for Televisions. A new generation of televisions has been developed, including liquid crystal display (LCD), rear projection, and high definition that provide amazing visual characteristics and can be integrated in to a home theater system. As the technology behind these televisions decreases in costs, more companies are entering the market. DLH Visions is a company that has a vision …show more content…

Rosing transmitted crude geometrical patterns onto the television screen and was the first inventor to do so using a CRT. The first practical signal generating tubes were invented by Vladimir K. Zworykin and Philo T. Farnsworth. Zworykin invented the iconoscope, which became the imaging iconoscope. Farnsworth invented the image dissector.
Present Day
Almost all TVs in use today rely on cathode ray tube to display images. LCDs and plasma displays are sometimes seen, but they are still rare when compared to CRTs. It is even possible to make a television screen out of thousands of ordinary 60-watt light bulbs. It is possible to see at a football event, scoreboard. CRTs are the most common way of displaying images today.
The terms anode and cathode are used in electronics as synonyms for positive and negative terminals. For example, one could refer to the positive terminal of a battery as the anode and the negative terminal as the cathode. 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.

Figure 1 Inside a Cathode Ray Tube
Electrons are negative. The anode is positive, so it attracts the electrons pouring off the cathode. In a television cathode ray tube, the stream of electrons is focused by a focusing anode into a tight

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