Download How Does Your TV Work?

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

page
1
page
2
page
3
page
4
page
5
page
6
page
7
page
8
page
9
page
10
page
11
page
12
page
13
page
14
Document related concepts
no text concepts found
Transcript 
How Does Your TV Work?
A brief introduction.
Two Amazing Things
about the Brain
1. Connecting the dots

Pixels and resolution
2. Connecting the frames

15 frames per second
The Cathode Ray Tube
 Anode and
Cathode and
Ray
 Phosphor
Steering Coils
Steering Coils
The Black-and-White
TV Signal
 Raster scan
 Horizontal
retrace
 Vertical retrace
 Interlacing
 Progressive
scanning
Thus, a “composite video
signal” contains:
1. Intensity information
2. Horizontal retrace
3. Vertical retrace
Composite Video Signal
Adding Color
 Changes from Black and White



3 electron beams
Screen coating
Shadow mask
Shadow Mask
Chrominance Signal/
Color Burst
Liquid Crystal Display (LCD)
 Necessary physical facts:




Light can be polarized.
Liquid crystals can transmit and change
polarized light.
The structure of liquid crystals can be changed
by electric current.
There are transparent substances that can
conduct electricity.
LCD Tech
 On
 Off
LCD Types
 Backlit vs. Reflective
 Common-plane-based
 Passive-matrix
 Active-matrix
Related documents