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M66255FP

8192 × 10-BIT LINE MEMORY (FIFO)

MITSUBISHI ELECTRIC  

MITSUBISHI 〈DIGITAL ASSP〉

M66255FP

8192 × 10-BIT LINE MEMORY (FIFO)

APPLICATION EXAMPLE

Laplacian Filter Circuit for Correction of Resolution in the Secondary Scanning Direction.

B

Line (n+1)

image data

M66255

D0 Q0

D7 Q7

1-line

delay

N

Line n image data

×2

×K

M66255

D0 Q0

D7 Q7

A

Line (n–1)

image data

1-line

delay

Corrected

image data

Primary scanning

direction

A

N

B

Line (n–1)

Line n

Line (n+1)

N' = N+K {(N–A)+(N–B)}

= N+K {2N–(A+B)}

K : Laplacean coefficient

11

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