參數(shù)資料
型號(hào)： GL842
廠商： Genesys Logic, Inc.
英文描述： USB 2.0 2-in-1 Scanner Controller
中文描述： 個(gè)USB 2.0 2合1掃描儀控制器
文件頁(yè)數(shù)： 58/64頁(yè)
文件大?。?/td> 542K
代理商： GL842
GL842 USB 2.0 2-in-1 Scanner Controller
Genesys Logic Inc.—All rights reserved.
Page 58
12 Threshold Level Setting
Can be programmed by S/W.
Range: 0 to 255 can be adjusted by one increment.
The threshold with bandwidth is in order to reduce image noise.
BWHI
d
BWLOW b c e i bandwidth
g
a
a,b,c,g : are black pixels
d,e,f,h,i : are white pixels
13 Exposure Time Adjustable
Maximum: 2096k pixels time
Adjustment step: 1 pixel time.
For transparency scan, the exposure time can up to 2096k pixel time.
14 Scan Width control
Scan width control for horizontal line.
A. Support start pixel address, end pixel address and dummy pixel number setting.
B. Maximum length: 64k pixels.
Minimum length: 1 pixel.
15 Support built-in USB(2.0)
A. Two in one: USB2.0 + scanner controller.
16 DRAM Timing
Support 4Mx1 , x2 Bits (256Kx16) or 16M Bits (1Mx16) for EDO DRAM ; 4M or 8M Bits for SRAM,
as image buffer and calibration buffer timing.
You can select single or double DRAM for scanner. DRAM speed is 28ns and above for 30MHz system clock,
25ns and above for 40MHz system clock.
17 Horizontal Resolution Adjustable for DPI Function
A. Digital deletion type: The resolution from 1 DPI to 2400 DPI , can be adjusted by 1 DPI increment by S/W.
B. Digital average type: Support 1/2,1/3,1/4,1/5,1/6,1/8,1/10,1/12,1/15 digital average function.
For example, 1200dpi scanner: 600dpi, 400dpi, 300dpi, 240dpi, 200dpi, 150dpi, 120dpi, 100dpi,
80dpi average function.
C. Support stagger CCD: Support 1/2, 1/4 resolution, such as NEC, Toshiba and Sony stagger CCD.
18 Vertical Resolution Adjustable for DPI Function
The resolution of motor speed control is 16 bits, therefore we can control vertical resolution.
By one dpi increment, the resolution can be from 1 DPI to 4800 DPI for 1200 DPI scanner; and 1 DPI to 9600
DPI for 2400 DPI scanner.
Note: The resolution of quarter step can up to four times resolution.
h
相關(guān)PDF資料
PDF描述
GL843 High Speed USB 2.0 With ADF 2-in-1 Scanner Controller
GL850A USB 2.0 Low-Power HUB Controller
GL850A-MNGXX USB 2.0 Low-Power HUB Controller
GL850A-MNNXX USB 2.0 Low-Power HUB Controller
GL850A-MSGXX USB 2.0 Low-Power HUB Controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
GL843 制造商:GENESYS 制造商全稱:GENESYS 功能描述:High Speed USB 2.0 With ADF 2-in-1 Scanner Controller
GL848 制造商:GENESYS 制造商全稱:GENESYS 功能描述:High Speed USB 2.0
GL850 制造商:未知廠家 制造商全稱:未知廠家 功能描述:USB 2.0 4-PORT HUB Controller
GL850A 制造商:GENESYS 制造商全稱:GENESYS 功能描述:USB 2.0 Low-Power HUB Controller
GL850A-MNGXX 制造商:GENESYS 制造商全稱:GENESYS 功能描述:USB 2.0 Low-Power HUB Controller
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