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11 CIRCUIT DESCRIPTION
11.1. Block Diagram-1 (Image Processing)
On this system, the CPU (IC0006) controls operation of the ASICs (IC0035,IC0038), FPGA (IC0030,IC0031),the Sensors (Paper
Sensor and others), and the Motors (Paper Feed and others).
Motor pulse signals for conveying paper (Conveyor Motor) are provided from the ASIC (IC0035).
On the other hand, motor pulse signals for the other motors are provided from the CPU (IC0006) and FPGA (IC0030).
The FPGA (IC0030) requires SDRAM (IC0033) as the buffer memory.
FPGA (IC0030) SDRAM (IC0033) as the buffer memory.
The ASIC (IC0035) requires SDRAM (IC0040, IC0041, IC0055, IC0056) to store and output pre-processed and post-processed
image data for the front side.
The FPGA (IC0031) requires SDRAM (IC0034) as the buffer memory.
The ASIC (IC0038) requires SDRAM (IC0042, IC0043, IC0057, IC0058) to store and output pre-processed and post-processed
image data for the back side.
In order to perform duplex scanning, this scanner has 2 CISs (CIS(F), CIS(B)) to scan image signals for the front and back sides.
The FPGA (IC0030) receive front image signals from CIS(F), and then performs the line correction for them.After that, the ASIC
(IC0035) pre-processes them.
CIS(F) and FPGA(IC0030) are connected with a differential signals.
The FPGA (IC0031) receive front image signals from CIS(B), and then performs the line correction for them.After that, the ASIC
(IC0038) pre-processes them.
CIS(B) and FPGA (IC0031) are connected with a differential signals.
(Pre-process means shading correction and dpi transformation)
After finishing pre-processing, the ASIC (IC0035, IC0038) post-process the data into binary or compressed data.
Then the ASIC (IC0035, IC0038) sends the data which performed post-processing to USB Controller (IC0001) via FPGA (IC0030).
And ASIC (IC0035, IC0038) sends the data which relayed FPGA (IC0030) and performed post-processing to the USB controller
(IC0001).
The USB controller (IC0001) sends data to the PC via USB interface.
*
Post-process means binary processing (simple binary, auto binary, dither, error diffusion), color, and gray scale image processing
(MTF, Color Correction, Gamma Correction etc.).
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Содержание KV-S5046H
Страница 8: ...8 3 COMPONENT IDENTIFICATION 3 1 Main Part Names and Locations ...
Страница 9: ...9 ...
Страница 19: ...19 5 SECTIONAL VIEW 5 1 Bottom Block ...
Страница 20: ...20 5 2 Back Block ...
Страница 21: ...21 5 3 Upper Block ...
Страница 22: ...22 5 4 Lower Block 5 4 1 Mechanical Parts ...
Страница 23: ...23 5 4 2 Boards ...
Страница 39: ...39 Location of Reflectors G G G Reflectors ...
Страница 48: ...48 ...
Страница 49: ...49 ...
Страница 57: ...57 3 The decomposition procedure of CIS 3 1 Check the Hook 3 2 Unhook 5 points Hook 3 3 Lift up Glass ASSY ...
Страница 76: ...76 3 Remove the screw 4 While releasing the 3 claws pull the Left Cover forward ...
Страница 79: ...79 5 Pull in each directions and remove rubber parts 6 Component Parts ...
Страница 86: ...86 5 Disconnect the connector 6 Pull and remove the Conveyor Motor ...
Страница 89: ...89 6 Disconnect the Flat cable 7 Remove the CIS B 8 Remove Glass Assy See 8 4 2 ...
Страница 92: ...92 4 Pull out the Drive Roller 2 in the direction of the arrow ...
Страница 104: ...104 ...
Страница 132: ...132 ...
Страница 133: ...133 ...
Страница 134: ...134 ...
Страница 224: ...224 14 PARTS LOCATION AND MECHANICAL PARTS LIST ...
Страница 241: ...241 14 7 Packing 466 468 461 462 464 467 467 456 457 460 463 465 469 458 459 ...