M66282FP
Application Example
Sub Scan Resolution Compensation Circuit with Laplacian Filter
N
n line image data
M66282
D0
to
D7
Q0
to
Q7
B
(n + 1) line
image data
×
2
Adder
N + K {2N
−
(A + B) }
1 line
delay
Compensated
image data
Subtractor
2N
−
(A + B)
×
K
M66282
D0
to
D7
Q0
to
Q7
A
(n
−
1) line
image data
Adder
A+B
1 line
delay
Sub scan direction
Main scan direction
A
N
B
(n
−
1) line
n line
(n + 1) line
N' = N + K { (N
−
A) + (N
−
B) }
= N + K {2N
−
(A + B)}
K: Laplacian coefficient
REJ03F0255-0200 Rev.2.00 Sep 14, 2007
Page 12 of 13