Scanner Interface

(a)For binary data 1 pixel: 1 bit

8 pixels: 1 byte

Raster line 1

Raster line 2

 

Raster line j

 

 

 

 

 

 

Byte 0

 

 

 

Byte n

 

7

6

5

4

3

2

1

0

Byte 0

Pixel 1

Pixel 2

Pixel 3

Pixel 4

Pixel 5

Pixel 6

Pixel 7

Pixel 8

 

Byte n

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pixel

Pixel

Pixel

Pixel

Pixel

Pixel

Pixel

Pixel

 

 

ij-7

ij-6

ij-5

ij-4

ij-3

ij-2

ij-1

ij

 

 

 

 

 

 

 

 

 

For mirror image

 

7

6

5

4

3

2

1

0

Byte 0

Pixel

Pixel

Pixel

Pixel

Pixel

Pixel

Pixel

Pixel

 

 

i

i-1

i-2

i-3

i-4

i-5

i-6

i-7

Byte n

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pixel

Pixel

Pixel

Pixel

Pixel

Pixel

Pixel

Pixel

 

 

m+8

m+7

m+6

m+5

m+4

m+3

m+2

m+1

 

 

 

 

 

 

 

 

 

m = i (j - 1)

If the data amount per raster line is not a multiple of 8 bits, the window is rounded up to a multiple of 8 bits.

b.Pixel size data: (DATA TYPE CODE = X’80’)

The transfer format for this data is shown in the following illustration.

Appendix A-90