An Intro To Television

INTRODUCTION TO TELEVISION - K. Vishnu MCA KanchiLUG Member

Television history was not overnight and not invented by a single inventor.

MECHANICAL TELEVISION

- John Logie Baird (1920) The idea of using arrays of transparent rods to transmit images for television.

- Charles Francis Jenkins (1923) Radiovision claimed to have transmitted the earliest moving silhouette images.

ELECTRONIC TELEVISION CRT

Electronic television is based on the development of the cathode ray tube.

Now it is the picture tube found in modern TV sets.

MAIN INVENTORS OF CRT TELEVISION

Vladimir Kosma Zworykin (1925)

Philo T. Farnsworth (1939)

1. Glass Tube 2. Electron Gun 3. Electron Beam 4. Upper & Lower Leds 5. Shadow Mask 6. Phosporous Coated Screen

LCD TELEVISION

* An LCD TV is a flat panel TV * It based on liquid crystal display * Inter active properties # liquid crystals # light

* The liquid crystals are broken down into small particles. * These smaller particles are known as pixels. * Crystals are located in the middle of two electrodes.

An Intro To Television

by Kanchilug on Jun 07, 2009

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