
U.S.
Patent
Apr.
10,
2007
Sheet
15
0f
19
US
7,203,135
B2
FIG.16
SETI
IN
EXAMINATION
~SI601
HEAD
NUMBER
S1602
HAS
PREDETERMINED
TIME
PASSED
?
WRITE
EXAMINATION
DATA
~S1603
INTO
CONTROL
BLOCK
OF
HEAD
IN
QUESTION
READ
DATA
WRITTEN
~S1604
IN
CONTROL
BLOCK
S1605
DO
TWO
PIECES
OF
DATA
COINCIDE
?
INFORM
OF
DRIVE
FAILURE
~S1610
CHANGE
EXISTENCE
OF
UPDATE
OF
HEAD
IN
QUESTION
INTO
"o"
~S1606
I
ADD
1
To
EXAMINATION
~S1507
"
HEAD
NUMBER
END
IS
EXAMINATION
HEAD
NUMBER
LARGER
THAN
N0
HEAD
NUMBER
?
S1608
SET
I
IN
EXAMINATION
“41609
HEAD
NUMBER
_______I
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