Basic TV TECHNICAL TRAINING MODULE - Lesson 1

BASED ON COLOR 

BASED ON DISPLAY RESOLUTION

The display resolution is the number of distinct pixels in each dimension that can be displayed.

Marketing Description	Pixel Resolution	Alternate Names	Camera Sensor Equivalent	Source
480p	720x480	SD (Standard Definition)	¼ Megapixel	DVD Player, Broadcast, TV, Cable TV, PS2, Wii
720p	1280x720	HD Progressive	1 Megapixel	Blu-ray, HD Media player, PC, Mac, PS3,Xbox360, ISDB-T
1080p	1920x1080	Full HD Progressive (FHD)	2 Megapixel	Blu-ray, HD Media player, PC, Mac, PS3,Xbox360, ISDB-T
4k	3840x2160	Ultra Full HD (UHD)	8.2 Megapixel	Digital Cinema Player

BASED ON SIGNAL

TV Signal Transmission Process  

Image Transmission

The luminance and chroma of pixel transmitted in the original sender transforms into corresponding electronic signal with certain order.

By signal channel transmission, the receiving end will transform it into corresponding light-spot of the same luminance and chroma, and restore it into image in TV.  

Analog TV Signal Formats

Different countries(areas) use different analog TV signal systems.

PAL（PAL D/K, PAL I, PAL B/G）625/50i China, Vietnam: PAL D/K Britain, HK: PAL I Germany, Australia, Southeast Asia countries: PAL B/G

NTSC 525/60i America, Japan, Canada, Taiwan, etc.

SECAM 625/50i France, Russia, Eastern Europe

Digital TV Standards

Different digital TV standards in the world:

Europe: DVB According to the transmission medium: •DVB-S (Satellite) •DVB-C (Cable) •DVB-T (Terrestrial)

America: America, Japan, Canada, Taiwan, etc. Broadcasting-Terrestrial Standard:       ATSC Satellite/cable adopts European standard:    DVB-S/DVB-C

Japan:   Broadcasting-Terrestrial Standard:     ISDB-T Satellite/cable adopts European standard:     DVB-S/DVB-C

Based on Principle

Cathode Ray Tube (CRT)

The Cathode Ray Tube (CRT) is a vacuum tube containing an electron gun (a source of electrons or electron emitter) and a fluorescent screen used to view images.

RP (Rear Projection) TV

RP (Rear Projection) TV uses a projector to create a small image or video from a video signal and magnify this image onto a view able screen.

The projectors can be divided into LCD projector DLP projector and CRT projector.

Plasma Display Panel

A device forming image by phosphor luminescence that injects mixed gas into two sheets of ultra-thin glass  and applies the voltage on it.

LCD TV

LCD is short for liquid-crystal display. A low-power, flat-panel display used in many digital devices to display numbers or images. Liquid crystals (LCs) are matter in a state that has properties between those of conventional liquid and those of solid crystal.

It will appear as transparent liquid state when being heated, and as turbid solid state of crystalline particles when being cooled down.

LCDs do not produce light of their own.

Instead, when electric current is passed through the material, the molecules of the "liquid crystal" twist so that they either reflect or transmit light from an external source.