File:Balayage entrelace signal bobines fin.png
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editDescriptionBalayage entrelace signal bobines fin.png |
English: Television cathode ray tube scanning: voltage sent to the inductors (coils), assuming a 25 Hz system (PAL/SECAM), end of a 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), fin d'une trame (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 |
Source code :
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=18; pas=0.001; tmax=20.5; 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)') xs2bmp(1,'balayage_entrelace_signal_bobines_fin.bmp');
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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.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
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This licensing tag was added to this file as part of the GFDL licensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue |
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current | 10:59, 6 March 2007 | ![]() | 1,024 × 684 (9 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), end of a frame (interlaced scanning, one frame = 20 ms, 1/50 sec)}} {{fr|Balayage d'un tube cathodique de té |
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