4-35
Specifies the length in bytes of a window descriptor block. Each block has the same length. The
allowable range of length is between 40 and 248 bytes. For a length outside this range, this scanner
returns the following error:
Status: B'00001' (CHECK CONDITION)
Sense key: X'5' (ILLEGAL REQUEST)
(b) Window descriptor block
Window parameter data (window descriptor block) is shown in the following illustration.
7 6 5 4 3 2 1 0
Window identifier
(Reserved)
(MSB)
(LSB)
(MSB)
(LSB)
(MSB)
Upper Left X
(LSB)
(MSB)
Upper Left Y
(LSB)
(MSB)
Width
(LSB)
(MSB)
Length
(LSB)
Brightness
Threshold
Contrast
Image composition
Bit per pixel
(MSB)
(LSB)
RIF (Reserved) Padding type
(MSB)
(LSB)
Compression type
Compression argument
(Reserved)
Vendor unique parameter
Byte 0
1
2
3
4
5
6
9
A
D
E
11
12
15
16
17
18
X resolution
Halftone pattern
Bit ordering
19
1A
1B
1C
1D
1E
1F
20
21
22
27
28
n
Y resolution