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Date: Mon, 19 May 1997 09:47:04 +0900
From: MITSUNAGA Noriaki <mitchy@robotics.mech.eng.osaka-u.ac.jp>
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Subject: [man-jp 42] Re: mt.1, density 
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From: k-horik@yk.rim.or.jp
Subject: [man-jp 39] Re: mt.1, density 

> > FreeBSD $B$N(B mt.1 $B$K$O!"$J$K$d$i(B density $B$N5-=R$,$"$C$F!"(B
> > $B$5$^$6$^$J%F!<%W$N7A<0$J$s$+$,=q$+$l$F$$$k$N$G$9$,!"(B

$BI=$N0lHV>e$N!"(Bcode->$BN,>N$O0c$&$H;W$$$^$9!#(Bcode->$BId9f(B($B2=(B)$B$G$7$g$&!#(B

>            NRZI    Non Return to Zero, change on ones
>            NRZI    $BJQ99$,$"$C$F$b=i4|>uBV$KLa$i$J$$(B

NRZI:(Non Return Zero Inverted, NRZ$B$H$$$&Id9f2=$b$"$k(B)

UNIX MAGAZINE 1993$BG/(B 4$B7n9f(B p.79$B$"$?$j$K!"(BNRZI, FM, MFM, RLL$B$N@bL@$O(B
$B$"$j$^$9$M!#Lu8l$O:\$C$F$^$;$s$,!#(B

$B!t$J$s$H$J$/(BNRZI$B$K$D$$$F$O(BUNIX MAGAZINE$B$NJ8>O$HM}2r$,0c$&$J$"!#(B

>            MFM     Modified Frequency Modulation
>            MFM     $B=$@5<~GH?tJQD4(B

$B%U%m%C%T!<$N5-O?J}<0$N@bL@$J$s$+$G$O!"(BFM: $BC1L)EY(B, MFM: $BG\L)EY$J$s$F=q(B
$B$$$F$"$j$^$9$,!"$3$l$O;_$a$F!A<~GH?tJQD4$NJ}$,$$$$$H;W$$$^$9!#(B

>            IMFM    Inverted Modified Frequency Modulation
>            IMFM    $BH?E><~GH?t<~GH?tJQD4(B
                         ^^^^^^
                          $B=$@5(B
$B$G$9$h$M!#(B

>            GCR     Group Code Recording
>            PE      Phase Encoded
>            DDS     Dat Data Storage
>            RLL     Run Length Encoding

> GCR     $B%0%k!<%WId9f5-O?(B
> PE      $B0LAjId9f2=(B
> DDS     DAT $B%G!<%?5-21AuCV(B
> RLL     $B%i%s%l%s%0%9Id9f2=(B
