home *** CD-ROM | disk | FTP | other *** search
Wrap
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <!-- saved from url=(0068)http://svethardware.cz/sh/sh1.nsf/0/48FCAAF437DAB422C12569C200688884 --> <HTML><HEAD><TITLE>SHW: Protokoly V.34, V.90 a V.92: podφvejme se jim na zoubek !</TITLE><!-- Lotus-Domino (Release 5.0.6 - December 14, 2000 on Linux for Intel) --> <META content="text/html; charset=windows-1250" http-equiv=Content-Type><LINK href="sh_soubory/redsysie.css" rel=STYLESHEET type=text/css> <META content="Svet hardware - denik z oblati pocitacoveho hardware, elctronic magazine, daily" name=description> <META content="Newslist,products,news,hardware,internet,tests of hardware,Noviny, denik, testy,recenze" name=keywords> <SCRIPT language=JavaScript> <!-- function getnews() { var actlist=window.document.relevant.list; if (actlist.value=="") { alert("Nenφ oznaΦen Φlßnek, kter² se mß zobrazit"); } else { var newwin=window.open(window.document.relevant.path.value+actlist.value) } } function hodnot() { var radio=document.hodnoceni.znamka if (!radio[0].checked && !radio[1].checked && !radio[2].checked && !radio[3].checked && !radio[4].checked) { alert("Zapomn∞li jste oznßmkovat !") return false } } function help(docname) { window2=open(docname,"help","menubar=no,status=no,scrollbars=yes,width=620,height=382") }; // --> </SCRIPT> <META content="MSHTML 5.00.2614.3500" name=GENERATOR></HEAD> <BODY aLink=#008000 bgColor=#ffffff leftMargin=3 link=#0000ff onload="window.defaultStatus=document.title;return true" text=#000000 topMargin=1 vLink=#000080 MARGINWIDTH="3" MARGINHEIGHT="1"><FONT color=#ff0000 size=2></FONT><!-- tabulka loga a horniho menu --> <SCRIPT language=JavaScript> <!-- function slovnik() { var navapp = navigator.appName.toUpperCase(); var txt=""; if (navapp.search("NETSCAPE") == -1) { var range=document.selection.createRange(); if (range.text == "") { if (!confirm("NeoznaΦili jste v textu ₧ßdn² v²raz. Chcete jej zadat ruΦn∞ ?")) return; } else { range.expand("word"); txt=escape(range.text) } }; var window2=open("/sh/sh1.nsf/slovnik?readform&phrase=" + txt,"slovnik","menubar=no,status=no,scrollbars=yes,width=500,height=382") }; // --> </SCRIPT> <TABLE background=sh_soubory/topmenu_bkg.gif bgColor=#06138b border=0 cellPadding=0 cellSpacing=0 width="100%"> <TBODY> <TR align=left vAlign=center> <TD><A href="http://svethardware.cz/"><IMG alt="Sv∞t hardware: novinky, recenze, tipy, texty, ovladaΦe." border=0 height=27 src="sh_soubory/logo_svet.gif" width=160></A></TD> <TD width="100%"><!-- top menu --> <TABLE border=0 cellPadding=0 cellSpacing=0> <TBODY> <TR align=left> <TD background=sh_soubory/topmenu_bkgtop.gif height=5><IMG alt="" border=0 height=5 src="sh_soubory/topmenu_linestop.gif" width=117></TD> <TD rowSpan=3><IMG alt="" border=0 height=27 src="sh_soubory/topmenu_right.gif" width=11></TD></TR> <TR> <TD background=sh_soubory/1x1.gif class=topmenu height=16 noWrap><IMG align=left alt="" border=0 height=16 src="sh_soubory/1x1.gif" width=1> <IMG alt=Kulicka border=0 height=7 hspace=3 src="sh_soubory/kulicka.gif" width=6> <A class=topmenu href="http://svethardware.cz/sh/sh1.nsf/" onmouseover="window.status='titulnφ strana';return true;">titulnφ strana</A> <IMG alt=Kulicka border=0 height=7 hspace=3 src="sh_soubory/kulicka.gif" width=6> <A class=topmenu href="http://www.micronic.cz/ceden/" onmouseover="window.status='nßÜ bazar';return true;">nßÜ bazar</A> <IMG alt=Kulicka border=0 height=7 hspace=3 src="sh_soubory/kulicka.gif" width=6> <A class=topmenu href="http://svethardware.cz/sh/sh1.nsf/information/_kapnmorl041mq2srkc4_" onmouseover="window.status='zam∞stnßnφ';return true;">zam∞stnßnφ</A> <IMG alt=Kulicka border=0 height=7 hspace=3 src="sh_soubory/kulicka.gif" width=6> <A class=topmenu href="http://svethardware.cz/sh/sh1.nsf/information/inzerce" onmouseover="window.status='inzerce';return true;">inzerce</A> <IMG alt=Kulicka border=0 height=7 hspace=3 src="sh_soubory/kulicka.gif" width=6> <A class=topmenu href="http://svethardware.cz/sh/sh1.nsf/information/kontakty" onmouseover="window.status='o nßs';return true;">o nßs</A> <IMG alt=Kulicka border=0 height=7 hspace=3 src="sh_soubory/kulicka.gif" width=6> <A class=topmenu href="javascript:slovnik()" onmouseover="window.status='slovnφk';return true;">slovnφk</A> <IMG alt=Kulicka border=0 height=7 hspace=3 src="sh_soubory/kulicka.gif" width=6> </TD> <TR align=left> <TD background=sh_soubory/topmenu_bkgbot.gif height=6><IMG alt="" border=0 height=6 src="sh_soubory/topmenu_linesbot.gif" width=117></TD></TR></TBODY></TABLE></TD> <TD noWrap> <SCRIPT language=JavaScript> <!-- document.write ('<img src="http://www.toplist.cz/count.asp?ID=1675&logo=blank&http='); document.write (top.document.referrer,'" border=0 WIDTH=1 HEIGHT=1 ALT="">'); document.write('<IMG SRC="http://www.navrcholu.cz/cgi-bin/4web/nv_referer?id=00001514&ref=' + escape(top.document.referrer) + '" WIDTH=1 HEIGHT=1 ALT="" BORDER=0>'); //--> </SCRIPT> <NOSCRIPT><IMG alt="" border=0 height=1 src="sh_soubory/wrong.location.gif" width=1> </NOSCRIPT><IMG alt="" border=0 height=1 src="sh_soubory/nvhit.gif" width=1> </TD></TR></TBODY></TABLE><!-- tabulka menu a textu s reklamama --> <TABLE border=0 cellPadding=0 cellSpacing=0 width="100%"> <TBODY> <TR vAlign=top><!-- menu column --> <TD width=140><A href="http://svethardware.cz/"><IMG alt="Sv∞t Hardware" border=0 height=83 src="sh_soubory/logo_hardware2.gif" width=140></A><BR><!-- menu --> <TABLE background=sh_soubory/menu_bkg.gif border=0 cellPadding=10 cellSpacing=0 width="100%"> <TBODY> <TR> <TD><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/_88dgn6p9fedlgdvd1do3dg_?Open&area=_88dgn6p9fedlgdvd1do3dg_&count=9">Case/sk°φn∞</A><BR><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/CD?Open&area=CD&count=9">CD</A><BR><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/_28hkmeqbkk1m6t890dth74obq_?Open&area=_28hkmeqbkk1m6t890dth74obq_&count=9">Digitßlnφ obraz</A><BR><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/Disky?Open&area=Disky&count=9">Disky</A><BR><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/DVD?Open&area=DVD&count=9">DVD</A><BR><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/_k8dk6oob4d439up8_?Open&area=_k8dk6oob4d439up8_&count=9">ChladiΦe</A><BR><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/_l9dma0tj5edn6ior5_?Open&area=_l9dma0tj5edn6ior5_&count=9">Klßvesnice</A><BR><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/_j9dqn8qbc0q2nc83bdtqn8pbb_?Open&area=_j9dqn8qbc0q2nc83bdtqn8pbb_&count=9">Kutil∙v koutek</A><BR><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/Modemy?Open&area=Modemy&count=9">Modemy</A><BR><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/Monitory?Open&area=Monitory&count=9">Monitory</A><BR><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/MP3?Open&area=MP3&count=9">MP3</A><BR><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/_29tpn8obkdqgg_?Open&area=_29tpn8obkdqgg_&count=9">Ostatnφ</A><BR><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/_3a1gmq1moehkg_?Open&area=_3a1gmq1moehkg_&count=9">Pam∞ti</A><BR><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/Procesory?Open&area=Procesory&count=9">Procesory</A><BR><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/_ma03fqpbmk03aerg6r0g6spbmk03aerg6r0_?Open&area=_ma03fqpbmk03aerg6r0g6spbmk03aerg6r0_&count=9">P°evß₧n∞ nevß₧n∞</A><BR><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/_r0ru62p390qfma_?Open&area=_r0ru62p390qfma_&count=9">╪adiΦe</A><BR><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/Scannery?Open&area=Scannery&count=9">Scannery</A><BR><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/_eaeggd70_?Open&area=_eaeggd70_&count=9">Sφ¥</A><BR><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/_sahkn6qt0e9n7i_?Open&area=_sahkn6qt0e9n7i_&count=9">Tiskßrny</A><BR><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/_jahkn6qrfeq120ujgeag7cu8_?Open&area=_jahkn6qrfeq120ujgeag7cu8_&count=9">TiskovΘ zprßvy</A><BR><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/USB?Open&area=USB&count=9">USB</A><BR><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/Videokarty?Open&area=Videokarty&count=9">Videokarty</A><BR><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/_3bag6mr31chna2834clpmmu8_?Open&area=_3bag6mr31chna2834clpmmu8_&count=9">Zßkladnφ desky</A><BR><A class=mnu href="http://svethardware.cz/sh/sh1.nsf/ns/Zvuk?Open&area=Zvuk&count=9">Zvuk</A><BR></TD></TR></TBODY></TABLE><A href="http://svethardware.cz/sh/sh1.nsf/0/48FCAAF437DAB422C12569C200688884#topofpage"><IMG alt="Sv∞t Hardware" border=0 height=64 src="sh_soubory/globe_bot.gif" width=140></A> <BR> <DIV class=NewsBody style="TEXT-ALIGN: center">ISSN 1213-0818<BR>02.01.2001 15:39</DIV><BR> <CENTER><A href="http://www.mediaserver.cz/ims/ims.html" target=_blank><IMG alt="╚len IMS" border=0 height=31 src="sh_soubory/ims-logo.gif" width=88></A> </CENTER></TD> <TD><IMG alt="" border=0 height=8 src="sh_soubory/1x1.gif" width=8></TD> <TD bgColor=#eff7ff><IMG alt="" border=0 height=8 src="sh_soubory/1x1.gif" width=8></TD><!-- text column --> <TD bgColor=#eff7ff width="100%"><IMG alt="" border=0 height=6 src="sh_soubory/1x1.gif" width=1><BR> <DIV class=HPAdvText><!-- START ADCYCLE.COM MEDIA CODE WITH CACHE-BUSTER --> <SCRIPT src="sh_soubory/sems.js"></SCRIPT> <NOSCRIPT><A href="http://ads.micronic.cz/cgi-bin/adclick.cgi?manager=adcycle.com&id=1" target=_top><IMG alt="Click to Visit" border=1 height=60 src="sh_soubory/micr007_micr.gif" width=468></A> </NOSCRIPT><!-- END ADCYCLE.COM MEDIA CODE WITH CACHE-BUSTER --></DIV><BR> <TABLE border=0 cellPadding=0 cellSpacing=0 width="100%"> <TBODY> <TR vAlign=bottom> <TD> <DIV class=NewsMainTitle>Protokoly V.34, V.90 a V.92: podφvejme se jim na zoubek !</DIV><SPAN class=NewsMainSubtitle>(Modemy, 28.12.2000 08:00, autor "ZM")</SPAN> </TD> <TD align=right noWrap> <A href="mailto:?Subject=Zajimavy clanek na Svetu hardware (28.12.2000)&Body=http://svethardware.cz/sh/sh1.nsf/0/48FCAAF437DAB422C12569C200688884"><IMG alt="DoporuΦit Φlßnek" border=0 height=35 src="sh_soubory/but_recomm.gif" width=39></A> <A href="mailto:z.michalek@micronic.cz?Subject=RE: (SH 28.12.2000) Protokoly V.34, V.90 a V.92: podφvejme se jim na zoubek !" ?><IMG alt="Odeslat mail autorovi" border=0 height=35 src="sh_soubory/but_email.gif" width=29></A> <A href="http://svethardware.cz/sh/sh1.nsf/lkpplainnews/48FCAAF437DAB422C12569C200688884" target=_blank><IMG alt="Vytisknout Φlßnek" border=0 height=35 src="sh_soubory/but_print.gif" width=29></A> </TD></TR></TBODY></TABLE><!-- tabulka rozdelovaci puntikate linky --><!-- pokud to bude blbnout, dejme tam 1x1 s vyskou asi 8px --> <TABLE background=sh_soubory/kulicky_bkg.gif border=0 cellPadding=0 cellSpacing=0 width="100%"> <TBODY> <TR> <TD> </TD></TR></TBODY></TABLE> <FORM name=newsparts><SPAN class=smalltitle>╚ßsti Φlßnku: </SPAN> <SELECT class=inputlst name=cbo onchange=window.location=this.options[this.selectedIndex].value> <OPTION selected value=/sh/sh1.nsf/0/48FCAAF437DAB422C12569C200688884>ZaΦßtek Φlßnku</OPTION> <OPTION value=/sh/sh1.nsf/0/861874F3DF17724CC12569C2006942D1>Digitßln∞ - analogovΘ modemy (protokoly V.90 a V.92)</OPTION></SELECT> </FORM> <DIV class=NewsBody style="MARGIN-TOP: -1em"> <P>Hned na ·vod poprosφm: abychom se dostali k jßdru v∞ci, musel jsem aspo≥ troÜku zabrousit do teorie. Tak₧e - zkuste to p°e₧φt a pokud to nep∙jde, skoΦte na zßv∞r :-) <P><B><FONT size=5>TradiΦnφ analogovΘ modemy (protokoly V.34 a V.32)</FONT></B> <P>(s rychlostφ do 33,6 kb/s) pou₧φvajφ pro p°enos dat dva typy modulace: fßzovou (PM, Phase Modulation) a amplitudovou (AM). Kvadraturnφ modulace (QAM) je kombinacφ PM a AM - a to je prßv∞ modulace, kterou pou₧φvajφ protokoly V.32 (14,4 kb/s) a V.34 (28,8 a 33,6 kb/s). Tak₧e - co to PM a AM je ? <P><B>Fßzovß modulace (PM)</B> <P>PM je proces, p°i n∞m₧ jsou generovßny dva signßly se stejn²m kmitoΦtem ale s r∙zn²m fßzov²m posunem.(naz²vßn²m fßzov²m ·hlem). Jak je z°ejmΘ z obrßzku, pokud se pr∙b∞h obou signßl∙ kryje, fßzov² posun je 0<SUP>o</SUP> (a zßrove≥ rovn² 360<SUP>o</SUP>). <DIV align=center><BR><B><U>Fßzov² posuv 0</U></B><B><SUP>o</SUP></B> <P><IMG border=1 class=newsimg height=165 src="sh_soubory/80.gif" width=300></P></DIV><BR>Pokud zvolφme fßzov² posun 180<SUP>o</SUP>, sinusovka B zaΦφnß v polovin∞ periody sinusovky A <DIV align=center><BR><B><U>Fßzov² posuv 18</U></B><B><U>0</U></B><B><SUP>o</SUP></B> <P><IMG class=newsimg height=165 src="sh_soubory\80(1).gif" width=300></P></DIV><BR>Obdobn∞ m∙₧eme definovat fßzov² posun 90<SUP>o</SUP> a 270<SUP>o</SUP> <DIV align=center><BR><B><U>Fßzov² posuv 90</U></B><B><SUP>o</SUP></B> <P><IMG class=newsimg height=165 src="sh_soubory\80(2).gif" width=300> <P><B><U>Fßzov² posuv 270</U></B><B><SUP>o</SUP></B> <P><IMG class=newsimg height=165 src="sh_soubory\80(3).gif" width=300></P></DIV><BR>Tak - a te∩ p°ichßzφ to hlavnφ: budeme definovat, ₧e: <P> <CENTER> <TABLE border=0 cellPadding=0 cellSpacing=0> <TBODY> <TR vAlign=top> <TD bgColor=#000000 width=76> <DIV align=center><FONT color=#ffffff>Fßzov² posuv</FONT></DIV></TD> <TD bgColor=#000000 width=76> <DIV align=center><FONT color=#ffffff>P°enßÜenß informace</FONT></DIV></TD></TR> <TR vAlign=top> <TD bgColor=#ffffff width=76> <DIV align=center>0</DIV></TD> <TD bgColor=#ffffff width=76> <DIV align=center>00</DIV></TD></TR> <TR vAlign=top> <TD bgColor=#ffffff width=76> <DIV align=center>90</DIV></TD> <TD bgColor=#ffffff width=76> <DIV align=center>01</DIV></TD></TR> <TR vAlign=top> <TD bgColor=#ffffff width=76> <DIV align=center>180</DIV></TD> <TD bgColor=#ffffff width=76> <DIV align=center>10</DIV></TD></TR> <TR vAlign=top> <TD bgColor=#ffffff width=76> <DIV align=center>270</DIV></TD> <TD bgColor=#ffffff width=76> <DIV align=center>11</DIV></TD></TR></TBODY></TABLE></CENTER> <P>Co °φkß tato tabulka ? To, ₧e kdy₧ v jedinΘm okam₧iku zjistφme zda fßzov² posuv je 0, 90, 180 nebo 270 stup≥∙, vφme zßrove≥ jakou dvojici bit∙ nßm vysφlaΦ poslal. Anebo jeÜt∞ jinak - <B>v jedinΘm okam₧iku jsme p°ijali dva bity souΦasn∞</B>. A prßv∞ v tom je kouzlo vφcestavovΘ modulace. <DIV align=center><BR><IMG class=newsimg height=165 src="sh_soubory\80(4).gif" width=214></DIV><BR>Te∩ °eknete: no dob°e, a proΦ tedy t∞ch stav∙ nenφ t°eba tisφc anebo t°eba 65535 ? To by to pak p°i p°enosech odsejpalo... Ano, byla by tu ta mo₧nost - problΘm je vÜak jinde: telefonnφ linka je vÜe, jen ne ideßlnφ p°enosov² kanßl. Na pozadφ je spousta ruch∙, ozv∞n, A/D a D/A p°evody v ·Φastnick²ch sadßch telefonnφch ·st°eden zanßÜejφ dalÜφ fßzovΘ zkreslenφ a kvantizaΦnφ Üum, tak₧e nakonec se ukßzalo ₧e tudy cesta nevede. <P> <P><B>Amplitudovß modulace</B> <P>je pramßtφ vÜech modulacφ. Princip je velmi jednoduch²: chci-li p°enΘst logickou "0", vysφlßm slabÜφ signßl, p°i logickΘ "1" siln∞jÜφ signßl: <DIV align=center><BR><IMG class=newsimg height=165 src="sh_soubory\80(5).gif" width=300></DIV><BR>KoneΦn∞ se dostßvßme k tomu, co je podstatou protokolu V.32 a V.34: <B>Kvadraturnφ amplitudovß modulace (QAM)</B> <P>QAM kombinuje fßzovou a amplitudovou modulaci. V p°ipojenΘm obrßzku kombinuje osmistavovou fßzovou modulaci s dvoustavovou amplitudovou, co₧ dßvß dohromady 16 stav∙, neboli - v jedinΘm okam₧iku p°enßÜφ Φty°i bity informace najednou. Ka₧dß takovß Φtve°ice bit∙ je naz²vßna <B>symbolem</B>. <DIV align=center><BR><IMG border=1 class=newsimg height=243 src="sh_soubory\80(6).gif" width=282></DIV><BR>A to je p°esn∞ to, co pou₧φvß protokol V.32: 4 bity souΦasn∞ p°enßÜenΘ p°i modulaΦnφ rychlosti 2400Bd dßvajφ p°enosovou rychlost 9600 b/s. <P>U protokolu V.34 je vÜe slo₧it∞jÜφ. Teoreticky by staΦilo vzφt modulaΦnφ rychlost 3200 Bd a 512 stavovou modulaci (neboli 9 bit∙ v symbolu) a dostaneme k²₧en²ch 28800 b/s. ProblΘm je v tom, ₧e rozdφly mezi jednotliv²mi stavy jsou ji₧ natolik malΘ, ₧e by byly za danΘho stavu nedek≤dovatelnΘ. Proto se pou₧φvß trellis k≤dovßnφ, jeho₧ problematika je ji₧ hodn∞ komplexnφ - princip spoΦφvß v p°idßnφ "nadbyteΦnΘho" bitu do ka₧dΘho nebo ka₧dΘho druhΘho symbolu, co₧ ve v²sledku zv²Üφ odolnost modulace proti Üumu pozadφ. Tak₧e snad jen konstatujme, ₧e V.34 modulace mß 916 stav∙ a Φty°dimenzionßlnφ trellis k≤dovßnφ. <P>Podle Shannonova teorΘmu je teoretickß maximßlnφ p°enosovß rychlost na reßlnΘ telefonnφ lince (myÜlen je samoz°ejm∞ model reßlnΘ telefonnφ linky s p°esn∞ definovan²mi parametry) kolem 35 kb/s. Ka₧dΘ dalÜφ zv²Üenφ p°enosovΘ rychlosti je ji₧ mo₧nΘ pouze na lince s parametry lepÜφmi, ne₧ mß tento model - a to se t²kß i souΦasn²ch protokol∙ V.90 a V.92.<BR></P></DIV><BR clear=all> <FORM action=/sh/sh1.nsf/webhodnot?openagent method=post name=hodnoceni onsubmit="return hodnot()"> <TABLE border=0 cellPadding=2 cellSpacing=0 width="100%"> <TBODY> <TR bgColor=#c6e7ff> <TD class=smalltitle width="100%"> </TD> <TD noWrap><A class=smalltitle href="http://svethardware.cz/sh/sh1.nsf/0/861874F3DF17724CC12569C2006942D1">Digitßln∞ - analogovΘ modemy (protokoly V.90 a V.92)</A></TD> <TD><IMG alt="" border=0 height=16 src="sh_soubory/next.gif" width=16></TD></TR></TBODY></TABLE> <P> <TABLE background=sh_soubory/kulicky_bkg.gif border=0 cellPadding=0 cellSpacing=0 width="100%"> <TBODY> <TR> <TD> </TD></TR></TBODY></TABLE><INPUT name=unid type=hidden value=48FCAAF437DAB422C12569C200688884> <TABLE border=0 cellSpacing=0 width="100%" CELLPADING="0"> <TBODY> <TR> <TD class=CmdBoxTitle colSpan=2 width="100%">Pr∙m∞rnΘ hodnocenφ Φlßnku: 1,30 (hodnotilo 23 Φtenß°∙)</TD> <TD align=right class=CmdBoxTitle noWrap rowSpan=2> <INPUT alt="OdeÜli znßmku" border=0 src="sh_soubory/but_znamkuj.gif" type=image value=Znßmkuj> </TD></TR> <TR> <TD class=CmdBoxCmnt noWrap>Oznßmkujte Φlßnek jako ve Ükole</TD> <TD align=right noWrap><INPUT name=znamka type=radio value=1><B class=inputlst>1</B> <INPUT name=znamka type=radio value=2><B class=inputlst>2</B> <INPUT name=znamka type=radio value=3><B class=inputlst>3</B> <INPUT name=znamka type=radio value=4><B class=inputlst>4</B> <INPUT name=znamka type=radio value=5><B class=inputlst>5</B> </TD></TR></TBODY></TABLE></FORM> <P> <FORM name=relevant><INPUT name=path type=hidden value=/sh/sh1.nsf/0/> <TABLE border=0 cellSpacing=0 width="100%" CELLPADING="0"> <TBODY> <TR> <TD class=CmdBoxTitle width="100%">DalÜφ Φlßnky na podobnΘ tΘma</TD> <TD align=right class=CmdBoxTitle noWrap rowSpan=2> <A href="javascript:getnews()"><IMG alt="Zobraz vybran² Φlßnek" border=0 src="sh_soubory/but_zobraz.gif"></A> </TD></TR> <TR> <TD class=CmdBoxCmnt>Nalezeno 7 Φlßnk∙</TD></TR></TBODY></TABLE><IMG height=3 src="sh_soubory/1x1.gif" width=1><BR><SELECT class=inputlst name=list size=8 style="WIDTH: 100%" BORDER="0"> <OPTION value=C9B1FA72087217CEC12569A4003D25C3>27.11.2000 Internφ PCI modem WELL pro LINUX !!! (Zprßva)</OPTION> <OPTION value=8802C9B00ABD410CC125693F002ECA56>24.08.2000 ZnaΦenφ modem∙ firmy Pine (Zprßva)</OPTION> <OPTION value=C1F24BCAC971AF3AC12568B7003D5F79>06.04.2000 Moduly modem∙ pro "embedded" systΘmy (Zprßva)</OPTION> <OPTION value=5BED00147FDC2095C12568AF003C80A6>29.03.2000 Modem aliance 3Com a U.S.Robotics (Zprßva)</OPTION> <OPTION value=CFD6DC074A4E9BC4C125689B004F0BAF>08.03.2000 PCI nebo ISA modem? (Zprßva)</OPTION> <OPTION value=8EF3D038AB583118C12568850028246F>14.02.2000 Modem KINGMAX 56 V90 (Zprßva)</OPTION> <OPTION value=078B6E4DE61A7F2EC12567A40047D85B>04.07.1999 Supra Express USB (Zprßva)</OPTION></SELECT> </FORM> <P> <FORM action=/sh/sh1.nsf/NewsCmds?OpenAgent method=post name=_ShowComments><INPUT name=MainID type=hidden value=48FCAAF437DAB422C12569C200688884> <TABLE border=0 cellPadding=0 cellSpacing=0 width="100%"> <TBODY> <TR> <TD class=CmdBoxTitle width="100%">Diskuze Φtenß°∙</TD> <TD align=right class=CmdBoxTitle noWrap rowSpan=2> <INPUT alt="P°idej nov²" border=0 class=inputimg name=addnew src="sh_soubory/but_new.gif" type=image> <INPUT alt="P°idej odpov∞∩" border=0 class=inputimg name=addansw src="sh_soubory/but_answ.gif" type=image> <INPUT alt="Zobraz vybranΘ" border=0 class=inputimg name=dispsel src="sh_soubory/but_vybr.gif" type=image> <INPUT alt="Zobraz vÜe" border=0 class=inputimg name=dispall src="sh_soubory/but_vsechny.gif" type=image> </TD></TR> <TR> <TD class=CmdBoxCmnt noWrap>Celkem 7 p°φsp∞vk∙</TD></TR></TBODY></TABLE><IMG height=3 src="sh_soubory/1x1.gif" width=1><BR> <DIV class=inputlst><SELECT class=inputlst multiple name=IDS size=8 style="WIDTH: 100%" BORDER="0"> <OPTION value=NT0000B6DE>29.12.2000 10:08 Mr. Trellis [Pavlik]</OPTION><OPTION value=NT0000B71A>29.12.2000 19:15 | Re: Mr. Trellis [Zden∞k Michßlek]</OPTION><OPTION value=NT0000B6BE>28.12.2000 23:56 Je to nejake divne... [Ondrej 'SanTiago' Zajicek]</OPTION><OPTION value=NT0000B6C6>29.12.2000 01:08 | Re: Je to nejake divne... [Zden∞k Michßlek]</OPTION><OPTION value=NT0000B6BA>28.12.2000 23:05 Re: Max. 56kbs ??? [Pavel Ruzicka]</OPTION><OPTION value=NT0000B672>28.12.2000 12:44 Max. 56kbs ??? [Radek ètrΘbl]</OPTION><OPTION value=NT0000B692>28.12.2000 15:19 | Re: Max. 56kbs ??? [Zden∞k Michßlek]</OPTION></SELECT></DIV><IMG height=3 src="sh_soubory/1x1.gif" width=1><BR></FORM> <FORM action=/sh/sh1.nsf/NewsCmds?OpenAgent method=post><INPUT name=MainID type=hidden value=48FCAAF437DAB422C12569C200688884> <TABLE border=0 cellPadding=0 cellSpacing=0 width="100%"> <TBODY> <TR vAlign=center> <TD align=right class=txt noWrap width="100%">Sledovat p°φsp∞vky z diskuze mailem: </TD> <TD align=right noWrap><INPUT class=inputtxt name=newsmail style="WIDTH: 150px" value=adresa@domena.cz></TD> <TR></TR></TBODY></TABLE></FORM> <P></P> <TD bgColor=#eff7ff><IMG alt="" border=0 height=8 src="sh_soubory/1x1.gif" width=8></TD></TD><!-- oddeleni aktualitky columnu --> <TD><IMG alt="" border=0 height=8 src="sh_soubory/1x1.gif" width=8></TD><!-- aktualitky column --> <TD><!-- hledßnφ --> <SCRIPT type=text/javascript> <!-- function SearchSubmit(StringToSearch) { if(StringToSearch=="") { alert("Nezadali jste text, kter² se mß vyhledßvat"); return false}; return true } // --> </SCRIPT> <FORM action=/sh/sh1.nsf/AllNews?SearchView&Count=20 method=post name=SearchForm onsubmit="return SearchSubmit(this.Query.value)"><IMG alt="" border=0 height=6 src="sh_soubory/1x1.gif" width=170><BR> <TABLE border=0 cellPadding=0 cellSpacing=0 class=BoxTableLo width="100%"><TBODY> <TR align=middle vAlign=top> <TD><IMG alt="" border=0 height=17 src="sh_soubory/akt_topleft.gif" width=8></TD> <TD vAlign=bottom width="100%"><IMG alt="" border=0 height=2 src="sh_soubory/1x1.gif" width=2><BR><SPAN class=BoxTitleLo>Vyhledßvßnφ</FONT></SPAN></TD> <TD><A href='javascript:help("/sh/sh1.nsf/information/fulltextsearch?opendocument")'><IMG align=middle alt="Jak hledat ?" border=0 height=16 src="sh_soubory/otaznik.gif" width=16></A></TD> <TD><IMG alt="" border=0 height=17 src="sh_soubory/akt_topright.gif" width=8><BR></TD></TR> <TR> <TD><IMG alt="" border=0 height=5 src="sh_soubory/akt_crosslinetopleft.gif" width=8></TD> <TD align=right background=sh_soubory/akt_crosslinetopbkg.gif colSpan=2><IMG alt="" border=0 height=5 src="sh_soubory/akt_crosslinetopend.gif" width=4></TD> <TD><IMG alt="" border=0 height=5 src="sh_soubory/akt_crosslinetopright.gif" width=8></TD></TR> <TR align=left vAlign=bottom> <TD background=sh_soubory/akt_bkgleft.gif><IMG alt="" border=0 height=1 src="sh_soubory/1x1.gif" width=8></TD> <TD align=middle colSpan=2 width="100%"><SPAN class=boxik><FONT face="arial, sans-serif" size=1><INPUT name=Query size=14></FONT> <INPUT name=SearchMax type=hidden value=1000> <!-- <BR><A HREF=javascript:help("/sh/sh1.nsf/information/fulltextsearch?opendocument")>Jak hledat</A></SPAN> --></SPAN></TD> <TD background=sh_soubory/akt_bkgright.gif><IMG alt="" border=0 height=1 src="sh_soubory/1x1.gif" width=8></TD></TR> <TR> <TD><IMG alt="" border=0 height=8 src="sh_soubory/akt_crosslinebottomleft.gif" width=8></TD> <TD background=sh_soubory/akt_crosslinebottombkg.gif colSpan=2><IMG alt="" border=0 height=8 src="sh_soubory/1x1.gif" width=8></TD> <TD><IMG alt="" border=0 height=8 src="sh_soubory/akt_crosslinebottomright.gif" width=8></TD></TR></TBODY></TABLE></FORM> <P><!-- vtipy --><!-- prav² reklamnφ banner --> <TABLE border=0 cellPadding=0 cellSpacing=0 class=BoxTableLo width="100%"><TBODY> <TR align=middle vAlign=top> <TD><IMG alt="" border=0 height=17 src="sh_soubory/akt_topleft.gif" width=8></TD> <TD vAlign=bottom width="100%"><IMG alt="" border=0 height=2 src="sh_soubory/1x1.gif" width=2><BR> <DIV class=BoxTitleLo>Reklama</DIV></TD> <TD><IMG alt="" border=0 height=17 src="sh_soubory/akt_topright.gif" width=8><BR></TD></TR> <TR> <TD><IMG alt="" border=0 height=5 src="sh_soubory/akt_crosslinetopleft.gif" width=8></TD> <TD align=right background=sh_soubory/akt_crosslinetopbkg.gif><IMG alt="" border=0 height=5 src="sh_soubory/akt_crosslinetopend.gif" width=4></TD> <TD><IMG alt="" border=0 height=5 src="sh_soubory/akt_crosslinetopright.gif" width=8></TD></TR> <TR align=left vAlign=bottom> <TD background=sh_soubory/akt_bkgleft.gif><IMG alt="" border=0 height=1 src="sh_soubory/1x1.gif" width=8></TD> <TD width="100%"> <DIV class=BoxText> <TABLE bgColor=#dedede border=0 cellSpacing=0 width="100%"> <TBODY> <TR> <TD bgColor=#ffffff width=158> <CENTER><A href="http://www.levi.cz/"><IMG border=0 src="sh_soubory/levilogo.gif"></A></CENTER><BR></TD></TR> <TR bgColor=#c0c0c0> <TD><FONT color=#000000 size=2>Pentium III 600EB FC-PGA</FONT></TD> <TR bgColor=#c0c0c0> <TD align=right><B><FONT color=#ff0000 size=2>5 800,- KΦ</FONT></B></TD></TR> <TR bgColor=#ffffff> <TD><FONT color=#000000 size=2><A href="http://www.levi.cz/produkty/mb/pinepms01b.htm">Pine PM-S01B, Socket 370, SiS620</A></FONT></TD></TR> <TR bgColor=#ffffff> <TD align=right><B><FONT color=#ff0000 size=2>2 735,- KΦ</FONT></B></TD></TR> <TR bgColor=#c0c0c0> <TD><FONT color=#000000 size=2>GeForce2 MX, 32MB SDRAM</FONT></TD></TR> <TR bgColor=#c0c0c0> <TD align=right><B><FONT color=#ff0000 size=2>4 330,- KΦ</FONT></B></TD></TR> <TR bgColor=#ffffff> <TD><FONT color=#000000 size=2>HDD Seagate 30,6GB, ATA/100</FONT></TD></TR> <TR bgColor=#ffffff> <TD align=right><B><FONT color=#ff0000 size=2>5 550,- KΦ</FONT></B></TD></TR> <TR bgColor=#c0c0c0> <TD><FONT color=#000000 size=2>DVD NEC DVN5700A 12/40x, IDE</FONT></TD> <TR bgColor=#c0c0c0> <TD align=right><B><FONT color=#ff0000 size=2>3 555,- KΦ</FONT></B></TD></TR> <TR bgColor=#ffffff> <TD><FONT color=#000000 size=2>ZIP 100 Atapi, internφ</FONT></TD></TR> <TR bgColor=#ffffff> <TD align=right><B><FONT color=#ff0000 size=2>1 885,- KΦ</FONT></B></TD></TR> <TR bgColor=#c0c0c0> <TD><FONT color=#000000 size=2>AOC 5Glr, 15", MPRII</FONT></TD> <TR bgColor=#c0c0c0> <TD align=right><B><FONT color=#ff0000 size=2>5 590,- KΦ</FONT></B></TD></TR> <TR bgColor=#ffffff> <TD><FONT color=#000000 size=2>AOC 7Glr, 17", TCO99</FONT></TD></TR> <TR bgColor=#ffffff> <TD align=right><B><FONT color=#ff0000 size=2>8 070,- KΦ</FONT></B></TD></TR> <TR> <TD align=middle><SMALL><FONT color=red size=1>Ceny platφ od 11.12.<BR>VÜechny ceny jsou bez DPH.</FONT><BR><FONT size=1><A href="http://www.levi.cz/">LEVI International a.s.</A></FONT></SMALL> </TD></TR></TBODY></TABLE></DIV></TD> <TD background=sh_soubory/akt_bkgright.gif><IMG alt="" border=0 height=1 src="sh_soubory/1x1.gif" width=8></TD></TR> <TR> <TD><IMG alt="" border=0 height=8 src="sh_soubory/akt_crosslinebottomleft.gif" width=8></TD> <TD background=sh_soubory/akt_crosslinebottombkg.gif><IMG alt="" border=0 height=8 src="sh_soubory/1x1.gif" width=8></TD> <TD><IMG alt="" border=0 height=8 src="sh_soubory/akt_crosslinebottomright.gif" width=8></TD></TR></TBODY></TABLE> <P><!-- zprßvy dneÜnφho dne --> <TABLE border=0 cellPadding=0 cellSpacing=0 class=BoxTableHi width="100%"><TBODY> <TR align=middle vAlign=top> <TD><IMG alt="" border=0 height=17 src="sh_soubory/akt_topleft.gif" width=8></TD> <TD vAlign=bottom width="100%"><IMG alt="" border=0 height=2 src="sh_soubory/1x1.gif" width=2><BR> <DIV class=BoxTitleHi>DneÜnφ Φlßnky </DIV></TD> <TD vAlign=center><A href="http://svethardware.cz/sh/sh1.nsf/homepage?readform&start=1&count=15"><IMG align=middle alt="Zobraz dalÜφ Φlßnky" border=0 height=16 src="sh_soubory/dalsi.gif" width=16></A></TD> <TD><IMG alt="" border=0 height=17 src="sh_soubory/akt_topright.gif" width=8><BR></TD></TR> <TR> <TD><IMG alt="" border=0 height=5 src="sh_soubory/akt_crosslinetopleft.gif" width=8></TD> <TD align=right background=sh_soubory/akt_crosslinetopbkg.gif colSpan=2><IMG alt="" border=0 height=5 src="sh_soubory/akt_crosslinetopend.gif" width=4></TD> <TD><IMG alt="" border=0 height=5 src="sh_soubory/akt_crosslinetopright.gif" width=8></TD></TR> <TR align=left vAlign=bottom> <TD background=sh_soubory/akt_bkgleft.gif><IMG alt="" border=0 height=1 src="sh_soubory/1x1.gif" width=8></TD> <TD colSpan=2 width="100%"> <DIV class=BoxText><A class=BoxText href="http://svethardware.cz/sh/sh1.nsf/0/4ED8DFA2C6CAECB7C12569C8005283B6">Oprava Windows2000 pro u₧ivatele Athlon∙/Duron∙ <BR><I>(Zprßva, Procesory)</I></A> <FONT color=#606060><BR>Jste-li u₧ivatelΘ Windows2000 a poslednφch procesor∙ firmy AMD, pak se p°ipravte na opravu. Byly toti₧ zaznamenßny problΘmy, zp∙sobenΘ naruÜenφm dat sdφlen²ch p°es AGP adaptΘr videokartou a procesory AMD Athlon nebo AMD Duron.</FONT><BR><BR><A class=BoxText href="http://svethardware.cz/sh/sh1.nsf/0/CF75A204B33F7CBAC12569C800440969">Intel p°ipravuje pro trh lacin∞jÜφ Pentium 4? <BR><I>(Zprßva, Procesory)</I></A> <FONT color=#606060><BR>JeÜt∞ ne₧ zapoΦnete s rozbφjenφm sv²ch prasßtek a nebo se spo°enφm, podφvejte se na p°edpoklßdanou situaci v tΘto oblasti. Dßle takΘ jak to Φasov∞ vypadß s p°φchodem v²konn∞jÜφch mikroΦip∙ na 1.5 GHz.</FONT><BR><BR><A class=BoxText href="http://svethardware.cz/sh/sh1.nsf/0/3BB5AB765B4B236EC12569C800392269">Gigabyte pracuje na zßkladnφch deskßch "overclocking friendly" <BR><I>(Zprßva, Zßkladnφ desky)</I></A> <FONT color=#606060><BR>Overclocking, neboli p°etaktovßnφ, je obzvlßÜt∞ poslednφ dobou velmi oblφbenß oblast zvyÜovßnφ v²konu prost°ednictvφm zvyÜovßnφ pracovnφ frekvence procesoru nad rßmec jeho provoznφch frekvencφ stanoven²ch v²robcem. Jednφm z p°edpoklad∙ vedoucφch k ·sp∞chu je takΘ "kvalitnφ" zßkladnφ deska.</FONT><BR><BR></DIV></TD> <TD background=sh_soubory/akt_bkgright.gif><IMG alt="" border=0 height=1 src="sh_soubory/1x1.gif" width=8></TD></TR> <TR> <TD><IMG alt="" border=0 height=8 src="sh_soubory/akt_crosslinebottomleft.gif" width=8></TD> <TD background=sh_soubory/akt_crosslinebottombkg.gif colSpan=2><IMG alt="" border=0 height=8 src="sh_soubory/1x1.gif" width=8></TD> <TD><IMG alt="" border=0 height=8 src="sh_soubory/akt_crosslinebottomright.gif" width=8></TD></TR></TBODY></TABLE> <P><!-- nejΦten∞jÜφ Φlßnky --> <TABLE border=0 cellPadding=0 cellSpacing=0 class=BoxTableHi width="100%"><TBODY> <TR align=middle vAlign=top> <TD><IMG alt="" border=0 height=17 src="sh_soubory/akt_topleft.gif" width=8></TD> <TD vAlign=bottom width="100%"><IMG alt="" border=0 height=2 src="sh_soubory/1x1.gif" width=2><BR> <DIV class=BoxTitleHi>NejΦten∞jÜφ Φlßnky</DIV></TD> <TD><IMG alt="" border=0 height=17 src="sh_soubory/akt_topright.gif" width=8><BR></TD></TR> <TR> <TD><IMG alt="" border=0 height=5 src="sh_soubory/akt_crosslinetopleft.gif" width=8></TD> <TD align=right background=sh_soubory/akt_crosslinetopbkg.gif><IMG alt="" border=0 height=5 src="sh_soubory/akt_crosslinetopend.gif" width=4></TD> <TD><IMG alt="" border=0 height=5 src="sh_soubory/akt_crosslinetopright.gif" width=8></TD></TR> <TR align=left vAlign=bottom> <TD background=sh_soubory/akt_bkgleft.gif><IMG alt="" border=0 height=1 src="sh_soubory/1x1.gif" width=8></TD> <TD width="100%"> <DIV class=BoxText><FONT class=boxik size=1><A href="http://svethardware.cz/sh/sh1.nsf/0/FAE5CDCBF5C2D60FC12569BB004F0480">Na co se zam∞°it p°i po°φzenφ monitoru</A> (2432)</FONT> <P><FONT class=boxik size=1><A href="http://svethardware.cz/sh/sh1.nsf/0/D094384B8D504BDDC12569BC0034B6D2">JakΘ m∙₧eme oΦekßvat ceny intelovsk²ch procesor∙?</A> (2089)</FONT> <P><FONT class=boxik size=1><A href="http://svethardware.cz/sh/sh1.nsf/0/39DBD9D21757B939C12569C2000F3797">Kterß telefonnφ linka je 56k-kompatibilnφ ?</A> (1876)</FONT> <P><FONT class=boxik size=1><A href="http://svethardware.cz/sh/sh1.nsf/0/568D7CC994D458C8C12569B9002F1621">QDI Kinetiz 7T: levn∞jÜφ board pro Durony a Athlony s omezen²mi mo₧nostmi</A> (1757)</FONT> <P><FONT class=boxik size=1><A href="http://svethardware.cz/sh/sh1.nsf/0/102AAB22D7E18F4DC12569C2000F3796">Co je to softmodem, bez°adiΦov² modem, winmodem a co kupovat ?</A> (1673)</FONT> <P><FONT class=boxik size=1><A href="http://svethardware.cz/sh/sh1.nsf/0/48FCAAF437DAB422C12569C200688884">Protokoly V.34, V.90 a V.92: podφvejme se jim na zoubek !</A> (1498)</FONT> <P></P></DIV></TD> <TD background=sh_soubory/akt_bkgright.gif><IMG alt="" border=0 height=1 src="sh_soubory/1x1.gif" width=8></TD></TR> <TR> <TD><IMG alt="" border=0 height=8 src="sh_soubory/akt_crosslinebottomleft.gif" width=8></TD> <TD background=sh_soubory/akt_crosslinebottombkg.gif><IMG alt="" border=0 height=8 src="sh_soubory/1x1.gif" width=8></TD> <TD><IMG alt="" border=0 height=8 src="sh_soubory/akt_crosslinebottomright.gif" width=8></TD></TR></TBODY></TABLE> <P></P></TD></TR></TBODY></TABLE> <P> <DIV class=HPAdvText><!-- ************ Mr.Lin(x) HTML CODE Version 3.5 (Begin) ************* --><NOSCRIPT><A href="http://mr.linx.cz/"><IMG alt="Advertising system Mr.Lin(x)" src="sh_soubory/banner.gif"></A> </NOSCRIPT> <SCRIPT language=javascript> <!-- var appName var appVer appName = navigator.appName appVer = parseFloat(navigator.appVersion.substring(0,4)) if ((((appName.indexOf("Microsoft")>-1)&&(appVer<4))||((appName.indexOf("Netscape")>-1)&&(appVer<4)))||((appName.indexOf("Netscape")==-1)&&(appName.indexOf("Microsoft")==-1))) { document.write("<a href=\"http://ad.linx.cz/tam.asp?idserver=5116&idsekce=6355&pos=2&stat=1\" target=\"_top\">") document.write("<img src=\"http://ad.linx.cz/sem.asp?idserver=5116&idsekce=6355&pos=2&stat=1&ref="+document.referrer+"\" width=\"468\" height=\"60\" border=\"1\"></a>") } //--> </SCRIPT> <CENTER> <SCRIPT src="sh_soubory/sem.js"></SCRIPT> </CENTER><!-- ************ Mr.Lin(x) HTML CODE Version 3.5 (End) ************* --></DIV> <CENTER> <DIV class=SmallTxt>Copyright c 1998-2000 Micronic P°erov s.r.o. VÜechna prßva vyhrazena. <BR>Pou₧φvßme redakΦnφ systΘm <A href="http://www.abcsys.cz/redsys">RedSys 2.0</A>, kter² dodala firma <A href="http://www.abcsys.cz/">ABC Systems s.r.o.</A></DIV></CENTER></BODY></HTML>