Service Manuals, User Guides, Schematic Diagrams or docs for : panasonic PDP National Training Plasma Sub Field Drive Recap
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Plasma Sub Field Drive Recap:
The 3 phases for firing pixels are given below and is called a
SUBFIELD:
INTIALISE ---- ADDRESS (SCAN) ---- SUSTAIN
These steps create light from pixels.
3-1. Sub Field
3-1. Sub Field
Purpose:
Control Each Pixel's Brightness Individually
(Set up) (Scan & Write) (Emission)
Initialize Address Sustain
Address Sustain
Period Period
One Sub Field
1 Initialise phase resets all pixels
2 Scan phase writes WALL VOLTAGE to all pixels on a line by line
basis
3 Sustain phase drives the entire screen to produce brightness
from the pixels that have wall voltages loaded.
1
!
Brightness Control
Analogue Video Signal 8 Bit Digital Video Signal
1 1 1 1 1 1 1 1
1st Line : : : : : : : :
0 1 1 1 1 1 1 0
120th Line
: : : : : : : :
1 1 1 0 0 0 0 0
240th Line
1st Sub Field 4th S.F. 7th S.F.
2nd S.F. 5th S.F. 8th S.F.
Sampling point 3rd S.F. 6th S.F.
CLICK Sub Field Drive System
The above slide shows how each sample (from a video line) is
driven on the screen using SUB FIELDS (SF)
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