Kodak Document Scanner 9500 with/without Image Manager 9500 Manuale Utente Scaricare il pdf (Pagina 18)

100

101

5-2 A-61124 March 1999

SCSI interface signal

lines

The SCSI interface uses 18 signal lines:

Select (SEL)

Acknowledge (ACK)

Attention (ATN)

Reset (RST)

Target

Busy (BSY)

Data (DB(0)-DB(7))

Data Parity (DB(P))

Control/Data (C/D)

Input/Output (I/O)

Message (MSG)

Request (REQ)

Host

Computer

Initiator

Issuing SCSI

commands

There are seven steps or phases for issuing commands to the

scanner or controller:

Bus Free

Arbitration

Selection

Command

Data

Status

Message

Bus Free phase — the SCSI bus is not being used by an initiator

(host computer) or the target (scanner). No signals on the bus

are asserted.

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 100 101

Integrator’s 1
1 Introduction 2
About this guide 3
2 Scanning Concepts 4
Error handling 5
A-61124 March 1999 2-3 6
Fault recovery 7
3 Image Headers 8
Image Addresses 9
Assigning 9
A-61124 March 1999 3-3 10
Image header format 11
A-61124 March 1999 3-5 12
Default Image Header Format 13
Retrieving images and 14
Recommended retrieval 15
Host to scanner 16
Scanner to host 16
SCSI data rates 16
5 The SCSI Interface 17
SCSI interface signal 18
Issuing SCSI 18
A-61124 March 1999 5-3 19
SCSI status responses 20
SCSI message responses 21
SCSI conformance 22
SCSI commands 23
Command block descriptor 24
A-61124 March 1999 5-9 25
Define Window Parameters data 26
Get Window command 28
Get Window descriptor bytes 30
Get Window Parameters data 31
Inquiry command 33
Inquiry data 34
Read command 35
Release Unit command 36
Request Sense command 37
Request Sense data 38
A-61124 March 1999 5-23 39
Reserve Unit command 40
Scan command 40
Send command 41
Using the Send 42
Test Unit Ready command 43
6 Scanner-unique Commands 44
Command summary 45
A-61124 March 1999 6-3 46
Commands 47
BX/Y/Z — Scan resolution 48
CX — Clear buffers 48
DC — Sequential ID 48
DX — No scan 49
EX — Bit order 49
FX/Y/Z — Compression 50
GC — Last image 50
GX — End of job 51
HA — Set mode 51
HC — Next image address 51
JA — Define mode 52
JX/Y/Z — Scan threshold 53
KX/Y/Z — Scan contrast 54
LX/Y/Z — Dither pattern 54
(screen) 54
MC — Count Only mode 54
MX/Y/Z — Image 55
NF — Level of next 55
NX/Y/Z — Noise filter 55
SX/Y/Z — Reverse image 56
TX — Simplex/duplex 56
YX/Y/Z — Border 57
Reduction 57
WX/Y/Z — Skew 57
Correction 57
Scanner-unique 58
Recommended usage of 61
Protocol 62
Sample interfaces 62
Appendix A Glossary 63
A-2 A-61124 March 1999 64
Kodak Digital Science 65
A-4 A-61124 March 1999 66
Ordering publications 67
A-61124 March 1999 C-1 68
C-2 A-61124 March 1999 69
Image processing 70
D-2 A-61124 March 1999 71
Table D-2 — Scanner 9500 72
Appendix E Image Processing 74
Auto-cropping 75
Scanner-unique Commands 77
, Scanner-unique Commands 78
Noise filter 80
Resolution 82
Screening/Dithering 83
Adaptive Threshold 86
Processor (ATP) accessory 86
Image Manager capabilities 89
Example 1 91
Example 2 91
12 “ - Full width of Scanner 92
Border reduction 93
Skewed Document 93
Scanned images 94
Printed Images 94
Computer-generated images 95
Photographic images 95
Evaluation criteria 96
Staircasing 97
Aliasing 97
Image resolution 98
Noise and dynamic range 99
Brightness 100
DOCUMENT 101

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