How Analogue Colour Televisions Works: the Coding and Decoding Process
Channel: Cambridge Museum of Technology
Date: 2022-12-01

Pye History Trust presents the third part in its video series: “How Analogue Television Works”. 

Part 1 (https://youtu.be/_Ivc95tsfOU) explained monochrome (black & white) television broadcast and receiver technology. 

Part 2 (https://youtu.be/a5j6p_Fd-7I) explained how the eye perceives colour; how colour cameras work and how the television receiver displays the original picture.  

In this Part 3: a simplified explanation of how the colour signal is encoded onto the video signal by the camera and how the television receiver decodes this signal. 

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Audience
- Students: physics, optics 
- Electronics engineers 
- Broadcast enthusiasts 

Contents: 
0 -1 min: Introduction to the Pye Story at Cambridge Museum of Technology 
1 - 2 mins: introduction to colour television 
2 - 3 mins Luminance 
3 - 12 mins: National Television System Committee (NTSC) system, developed in the USA  
13 -20 mins Phase Alternating Line (PAL) system, developed in Europe 

Published under Creative Commons Licence: 
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) 
www.creativecommons.org/licenses/by-nc-nd/4.0

The Pye Story (www.pye-story.org) permanent exhibition at Cambridge Museum of Technology (www.museumoftechnology.com) displays examples of analogue television broadcast and receiver equipment produced by Pye during the 20th century. 
Video produced by R N Bates and R Ellis for The Pye History Trust, 2022.

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#electronics 
#broadcast 
#television