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BACKEND TECO3
This scanner capabilities are in the middle of the 3520 and 3575,
sharing features of both. Hence a third backend.
PIOTECH 3024 (TECO Scorpio/Taurus Infinity VM3552):
000: 06 00 02 02 43 00 00 10 20 20 20 20 20 20 20 20 ....C...
016: 46 6c 61 74 2d 62 65 64 20 73 63 61 6e 6e 65 72 Flat-bed scanner
032: 35 2e 30 38 35 2e 30 38 03 02 54 45 43 4f 20 56 5.085.08..TECO V
048: 4d 33 35 35 32 20 00 01 01 2c 00 01 04 b0 09 f6 M3552 ...,......
064: 10 68 01 2c 00 00 00 01 .h.,....
RELISYS INFINiTY SCORPIO:
000: 06 00 02 02 43 00 00 10 52 45 4c 49 53 59 53 20 ....C...RELISYS
016: 53 63 6f 72 70 69 6f 20 20 20 20 20 20 20 20 20 Scorpio
032: 31 2e 30 34 31 2e 30 34 03 02 54 45 43 4f 20 56 1.041.04..TECO V
048: 4d 33 35 35 32 20 00 01 01 2c 00 01 04 b0 09 f6 M3552 ...,......
064: 10 68 01 2c 00 00 00 00 .h.,....
Trust Imagery 2400SP:
000: 06 00 02 02 43 00 00 10 41 61 73 68 69 6d 61 20 ....C...Aashima
016: 49 4d 41 47 45 52 59 20 32 34 30 30 53 50 20 20 IMAGERY 2400SP
032: 31 2e 30 30 31 2e 30 30 03 02 54 45 43 4f 20 56 1.001.00..TECO V
048: 4d 33 35 35 32 20 00 01 01 2c 00 01 04 b0 09 f6 M3552 ...,......
064: 10 68 01 2c 00 00 00 01 .h.,....
Trust Imagery 4800 SP +:
000: 06 00 02 02 43 00 00 10 41 61 73 68 69 6d 61 20 ....C...Aashima
016: 49 4d 41 47 45 52 59 20 34 38 30 30 53 50 20 2b IMAGERY 4800SP +
032: 35 2e 30 38 35 2e 30 38 03 02 54 45 43 4f 20 56 5.085.08..TECO V
048: 4d 33 35 35 32 20 00 01 01 2c 00 01 04 b0 09 f6 M3552 ...,......
064: 10 68 01 2c 00 00 00 00 .h.,....
/*--------------------------------------------------------------------------*/
SCSI commands supported by the RELISYS VM3530+:
TEST UNIT READY
00 00 00 00 00 00
REQ SENSE
03 00 00 00 12 00
VENDOR-09
09 00 00 78 00 00
3-4 = length of data to receive. Always 30720 bytes.
Probably 12 lines of calibration at 300dpi.
8.5*300*12=30600
VENDOR-0E (?)
0E 00 00 00 00 00
Always follows VENDOR-09 command
INQUIRY:
12 00 00 00 35 00
standard inquiry
52 bytes - appears to never change
32-39: firmware version
42-52: real scanner name
SCAN
1B 00 00 00 00 00
SET WINDOW
24 00 00 00 00 00 00 00 45 00 (3552)
Total length is 99
07 = length (99-8 = 91)
10-11 = X Resolution
12-13 = Y resolution
14-17 = X top left corner
18-21 = Y top left corner
22-25 = width (size in inches * 300)
26-29 = length (size in inches * 300)
31 = 0x80 ?
33 = scan mode
0x00 = black & white
0x02 = grayscale
0x05 = color
34 = bit depth? - invariants, always 8
36 = dither pattern - only for B&W
0x00 = line art
0x01 = 2 X 2
0x02 = 3 X 3
0x03 = 4 X 4 Bayer
0x04 = 4 X 4 Smooth
0x05 = 8 X 8 Bayer
0x06 = 8 X 8 Smooth
0x07 = 8 X 8 Horizontal
0x08 = 8 X 8 Vertical
37 =
0x80 = RIF ?
48 = color channel to use
if scan mode is 0 or 2:
0x00 = red
0x01 = green
0x02 = blue
if scan mode is 05 -> ignored
TWAIN leaves 0x02
50: calibration
00 = yes
02 = no
53, 57, 61, 65: 0xff
READ
28 00 00 00 00 00 00 00 3E 00
6-8 = length
SEND
2A 00 03 00 00 02 00 04 00 00
2 = data type code
0x03 = gamma - 4*256 bytes
OBJECT POSITION
31 00 00 00 00 00 00 00 00 00
Park the CCD.
GET DATA BUFFER STATUS
34 01 00 00 00 00 00 00 12 00
1 = bit 1 is wait
7-8 allocation length
returned buffer is 0x10 bytes long.
0-2 = additional length (0x10-3 = 0x0D)
3 = reserved(?)
6-8 = scanner memory (with no RAM, it is 32KB on the VM3552)
9-11 = filled data buffer
12-13 = number of lines (constant during a scan)
14-15 = bytes per line (constant during a scan)
16 = ?
17 = in color mode, 0x07 seems to means to the colors are shifted
and given by rasters. 0x00 seems to mean that there is no
color shifting and that each pixel is coded by 3 consecutive
bytes.
/*--------------------------------------------------------------------------*/
Command sequence
(simplified, since the TWAIN driver seems to be quite stupid)
Get some info:
INQUIRY
Setup the scan:
TUR
SET WINDOWS
GET BUFFER STATUS
VENDOR-09
VENDOR-0E
SEND(10)
SET WINDOWS (same as the first one)
SCAN
loop until all data read:
GET BUFFER STATUS
READ(10) if any data available
park the CCD:
OBJECT POSITION
/*--------------------------------------------------------------------------*/
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