M66257 Mitsubishi, M66257 Datasheet - Page 10

• Manufacturer Part Number: M66257
• Description: 5120 x 8-BIT x 2 LINE MEMORY (FIFO)
• Manufacturer: Mitsubishi

10
APPLICATION EXAMPLE
Laplacian Filter Circuit for Correction of Resolution in the Secondary Scanning Direction.
image data
Line (n+1)
B
Primary scanning
direction
A
N
B
D
D
M66257
0
7
1-line
delay
2-line
delay
Q
Q
10
17
Q
Q
00
07
image data
Line (n–1)
A
Line (n–1)
Line n
Line (n+1)
2
Line n image data
N' = N+K { (N–A)+(N–B)}
= N+K { 2N–(A+B)}
K : Laplacean coefficient
N
5120
K
MITSUBISHI DIGITAL ASSP
8-BIT
2 LINE MEMORY (FIFO)
M66257FP
Corrected
image data