GL646USB Просмотр технического описания (PDF) - Unspecified

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GL646USB

Three-in-one Scanner Controller for USB and 1394

Unspecified 

GL646USB

The resolution of motor speed control is 16 bits, so, we can control vertical resolution

By one dpi increment, the resolution can be from 1 DPI to 4800DPI for 1200DPI scanner

And 1 DPI to 9600 DPI for 2400dpi scanner.

Note: The resolution of quarter step can up to four times resolution.

6.20. Acceleration/Deceleration Double Table

The acceleration/deceleration slope tables are store in DRAM, can be download by S/W.

The slope can be programmed by S/W for each table. Resolution is 16 bits pixel-time. The number of slope steps is

1~255 steps. One table is for scanning The other is for fast move.

The forward and backward steps can be programmed by S/W. The resolution is 16 bits pixel-time. The number of

slope steps is 1~255 steps. You can adjust any non-linear curve.

Note: what is fast move? Such as move back to go home or move to window any position to scan.

(1). Two table moving :

speed

Scanning position

buffer full position scan finished

Go to scan window

A

BC

forward

D

E

H

I

G

backward

go home

A,J : table two (slope two) acceleration curve.

B : table two (slope two) deceleration curve.

C,D,I : table one (slope one) acceleration curve.

E,F,H : table one (slope one) deceleration curve.

G : touch home sensor deceleration curve.

F

time

J

Revision 1.3

-17-

Mar.22 2001

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