File:Balayage entrelace signal bobines 1 periode.png
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Summary[edit]
| Description |
English: Television cathode ray tube scanning: voltage sent to the inductors (coils), assuming a 25 Hz system (PAL/SECAM), on a whole frame (interlaced scanning, one frame is 20 ms, 1/50 sec)
Français : Balayage d'un tube cathodique de télévision : tension envoyée aux bobines, pour un système à 25 Hz (PAL/SECAM), sur une trame complète (balayage entrelacé, une trame correspond à 20 ms, 1/50 sec) |
| Date | |
| Source | self-made, with Scilab |
| Author | Christophe Dang Ngoc Chan (cdang) |
| Permission (Reusing this file) |
GFDL |
Scilab source
 |
This media was created with Scilab, a free open-source software. Here is a listing of the Scilab source used to create this file. |
clear;
// balayage vertical
Ty=20; // période balayage
ay1=1/18.4; // pente du signal triangulaire montant
ay2=1/1.6; // pente du signal triangulaire descendant
// balayage horizontal
Tx=0.064; // période balayage
ax1=1/0.057; // pente du signal triangulaire montant
ax2=1/0.007; // pente du signal triangulaire descendant
tmin=0;
pas=0.01;
tmax=Ty+0.1;
function [y]=fy(t)
n = int(t/Ty);
T0 = Ty*n;
T1 = T0+18.4;
if t <= T1 then
y = ay1*(t-T0);
else y = 1-ay2*(t-T1);
end
endfunction
function [x]=fx(t)
n = int(t/Tx);
T0 = Tx*n;
T1 = T0+0.057;
if t <= T1 then
x = ax1*(t-T0);
else x = 1-ax2*(t-T1);
end
endfunction
T=tmin:pas:tmax; // période
Y = feval(T,fy);
X = feval(T,fx);
clf;
scf(1);
subplot(2,1,1)
plot2d(T,Y,rect=[tmin,0,tmax,1],style=2)
xtitle('Signal de balayage vertical','t (ms)', 'tension (éch. arbitraire)')
subplot(2,1,2)
plot2d(T,X,rect=[tmin,0,tmax,1],style=2)
xtitle('Signal de balayage horizontal','t (ms)', 'tension (éch. arbitraire)')
xs2gif(1,'balayage_entrelace_signal_bobines_1_periode.gif');
Licensing[edit]
I, the copyright holder of this work, hereby publish it under the following license:
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. |
  
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This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. | |
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| This licensing tag was added to this file as part of the GFDL licensing update. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 10:54, 6 March 2007 | | 1,024 × 684 (8 KB) | Cdang (talk | contribs) | black bottom line removed |
| 10:41, 6 March 2007 |  | 1,024 × 684 (8 KB) | Cdang (talk | contribs) | pb with axes solved | |
| 10:34, 6 March 2007 |  | 597 × 632 (5 KB) | Cdang (talk | contribs) | {{Information |Description={{en|Television cathode ray tube scanning: voltage sent to the inductors (coils), assuming a 25 Hz system (PAL/SECAM), on a whole frame (interlaced scanning, one frame = 20 ms, 1/50 sec)}} {{fr|Balayage d'un tube cathodique de t |
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