SW problem - vymyslite reseni?
Zdenek Dvorak
zdvorak
Středa Březen 17 11:49:41 CET 2004
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mam krasny problem na reseni, a momentalne me nenapada jak na to. Na prvni
pohled se to zda malickost, ale cim vic na tom premyslim tak tim vic se v
tom zamotavam. Treba vas napadne neco chytreho:
mate dva dvoustavove signaly o TEMER stejne freqenci se stridou 1:1. Ta
freqence se ale prece jen o nemeritelne malicko lisi a tak se ty signaly
vzajemne fazove posunuji. Kdyz je freqence B mensi nez A, tak se B opozduje
(posunuje doprava) a opacne. Kazda hrana signalu B vyvola preruseni ve
kterem se precte stav signalu A (vraci 1 nebo 0). Potrebuju algoritmus pro
zjisteni ktery signal ma vyzsi freqenci (samozrejme vzhldem k pomalemu
posunu pocitam, ze ten vypocet muze trvat dlouho).
diky chaos
Stav pri zacatku mereni
A _____~~~~~_____~~~~~_____
B _____~~~~~_____~~~~~_____
Freq B < A
Cas T0+1
A _____~~~~~_____~~~~~_____
B ~_____~~~~~_____~~~~~____
Cas T0+2
A _____~~~~~_____~~~~~_____
B ~~_____~~~~~_____~~~~~___
Freq A < B
Cas T0+1
A _____~~~~~_____~~~~~_____
B ____~~~~~_____~~~~~_____~
Cas T0+2
A _____~~~~~_____~~~~~_____
B ___~~~~~_____~~~~~_____~~
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<DIV><FONT face=3DArial size=3D2><SPAN class=3D788214419-26102000>mam =
krasny problem=20
na reseni, a momentalne me nenapada jak na to. Na prvni pohled se to zda =
malickost, ale cim vic na tom premyslim tak tim vic se v tom zamotavam. =
Treba=20
vas napadne neco chytreho:</SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN class=3D788214419-26102000>mate=20
dva dvoustavove signaly o TEMER stejne freqenci se stridou 1:1. Ta =
freqence=20
se ale prece jen o nemeritelne malicko lisi a tak se ty signaly =
vzajemne=20
fazove posunuji. Kdyz je freqence B mensi nez A, tak se B opozduje =
(posunuje=20
doprava) a opacne. Kazda hrana signalu B vyvola preruseni ve kterem se =
precte=20
stav signalu A (vraci 1 nebo 0). Potrebuju algoritmus pro zjisteni ktery =
signal=20
ma vyzsi freqenci (samozrejme vzhldem k pomalemu posunu pocitam, ze ten =
vypocet=20
muze trvat dlouho). </SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN class=3D788214419-26102000>diky =
chaos=20
</SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN =
class=3D788214419-26102000>Stav pri=20
zacatku mereni</SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN =
class=3D788214419-26102000>A =20
_____~~~~~_____~~~~~_____</SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN class=3D788214419-26102000>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN =
class=3D788214419-26102000>B =20
_____~~~~~_____~~~~~_____</SPAN></FONT></DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN class=3D788214419-26102000>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN class=3D788214419-26102000>Freq B =
<=20
A</SPAN></FONT></DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN =
class=3D788214419-26102000>Cas=20
T0+1</SPAN></FONT></DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN =
class=3D788214419-26102000>A =20
_____~~~~~_____~~~~~_____ =
=20
</SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN class=3D788214419-26102000>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN =
class=3D788214419-26102000>B =20
~_____~~~~~_____~~~~~____</SPAN></FONT></DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN =
class=3D788214419-26102000><FONT=20
face=3DArial size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN =
class=3D788214419-26102000><FONT=20
face=3DArial size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN =
class=3D788214419-26102000><FONT=20
face=3DArial size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN =
class=3D788214419-26102000><FONT=20
face=3DArial size=3D2><SPAN class=3D788214419-26102000>Cas=20
T0+2</SPAN></FONT></SPAN></FONT></DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN =
class=3D788214419-26102000><FONT=20
face=3DArial size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN =
class=3D788214419-26102000><FONT=20
face=3DArial size=3D2><SPAN class=3D788214419-26102000>A =20
_____~~~~~_____~~~~~_____</SPAN></FONT></DIV>
<DIV>
<DIV><FONT face=3DArial size=3D2><SPAN class=3D788214419-26102000>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN =
class=3D788214419-26102000>B =20
~~_____~~~~~_____~~~~~___</SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN class=3D788214419-26102000>
<DIV><FONT face=3DArial size=3D2><SPAN =
class=3D788214419-26102000>Freq A <=20
B </SPAN></FONT></DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN class=3D788214419-26102000>Cas=20
T0+1</SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN =
class=3D788214419-26102000>A =20
_____~~~~~_____~~~~~_____</SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN class=3D788214419-26102000>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN =
class=3D788214419-26102000>B =20
____~~~~~_____~~~~~_____~</SPAN></FONT></DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN =
class=3D788214419-26102000><FONT=20
face=3DArial size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN =
class=3D788214419-26102000><FONT=20
face=3DArial size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN =
class=3D788214419-26102000><FONT=20
face=3DArial size=3D2><SPAN class=3D788214419-26102000>Cas=20
T0+2</SPAN></FONT></SPAN></FONT></DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN =
class=3D788214419-26102000><FONT=20
face=3DArial size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN =
class=3D788214419-26102000><FONT=20
face=3DArial size=3D2><SPAN class=3D788214419-26102000>A =20
_____~~~~~_____~~~~~_____</SPAN></FONT></DIV>
<DIV>
<DIV><FONT face=3DArial size=3D2><SPAN class=3D788214419-26102000>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN =
class=3D788214419-26102000>B =20
___~~~~~_____~~~~~_____~~</SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D788214419-26102000></SPAN></FONT> </DIV></SPAN></FONT></DIV>=
</SPAN></FONT></DIV></SPAN></FONT></DIV></SPAN></FONT></DIV></SPAN></FONT=
></DIV></SPAN></FONT></DIV></SPAN></FONT></DIV></SPAN></FONT></DIV></SPAN=
></FONT></DIV></BODY></HTML>
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