
U.S.
Patent
Apr.
10,
2007
Sheet
8
0f
19
US
7,203,135
B2
FIG.8
~
502
DISK
CONTROL
PORTION
PORTION
DISK
502
~
CONTROL
6
0
5
M
O
2
2
2
2
).\O
20
\l\
6 6
m
C C C
B
B
||||||
I.
B
D.-
P P
1
4|
1
5
5 5
m
qv
R
B
On
u
m
m
m
0
R
H
H
H
E E
|||||||
.i
E
Du
V
V
V
E
N N N
T
O
O
0
S
C
C
C
A
M
1
m
4|
%
8
w
G
C C
B
B
||||||
I.
B
P
P
P.
w w
m
\(
)|\
6
O
5
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