Sunday 8 May 2011

Journey of the TV

Journey of the TV

Introduction

TV is now almost hundred years old. These years, particularly the last few decades have witnessed tremendous progress in the television technology and its applications. Earlier there were large size black and white TV’s; then portable TV’s, then flat screen TV, now home theatre and many more.. This progression is continuous and increasing even today. In Indian context, earlier there was only one TV in the village with the large land lord and it could broadcast only Ramayana and Mahabharata. But after 1990’s; there was a huge flow of private and international channels. This dynamic nature of technological application and its customization is further incessantly increasing in the era of Direct to Home TV, Tata sky and Reliance big TV

Concept: What is a TV?
Basically a TV is the technology of audio- visual presentation of distant film/ movie. It is one of the important tools of mass communication that is largely one -to many in nature. Basic objectives of this kind of instrument are to provide valuable information and news, to provide programs for entertainment and refreshment, to give distance education and to provide technical information to specific user groups such as farmers and students. These were the basic objectives of the television system. But we can see a perversion from these objectives due to increasing competition, privatization and globalization.

Reality confrontation:
If we look at ground reality; we see that the objective of providing entertainment has been so dominating over other objectives that other objectives are neglected and hardly considered to be functions of TV. TV is more used for watching serials, films and movies than watching informative and educational programs. This is a general trend which can have individual exceptions.

Market Opportunities:
Despite of these loopholes; the television and related industry has a growing market in India. Every now and then new companies are emerging into it. This can be understood with the example of a new brand of TV that has been recently launched.

A New Breed of Laser TV
New display concepts are a dime a dozen. However, very few of them find their way beyond prototype stage, and even if they do, they usually can't compete with the manufacturing muscle of the $100 billion liquid crystal display (LCD) industry.

But a display startup called Prysm believes that its technology, called laser phosphor display (LPD), has the perfect combination of picture quality, energy efficiency, and manufacturing simplicity to have a chance of breaking through.

The San Jose-based Prysm, which came out of stealth mode last week, has been getting plenty of media attention due to its claims of energy efficiency.

According to Roger Hajjar, the company's chief technology officer, an LPD consumes a fourth of the power of a liquid crystal display with the same brightness and about a tenth of the power of a plasma screen (although an LPD also shines brighter than a plasma screen, so the comparison isn't direct, according to Hajjar).

The concept behind LPD is relatively straightforward. Beams of light from several ultra-violet lasers are directed by a set of movable mirrors onto a screen made of a plastic-glass hybrid material coated with color phosphor stripes.

The laser draws an image onto the screen by scanning line by line from top to bottom. The energy from the laser light activates the phosphor, which emits photons, producing an image.




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