XEROX WorkCentre 6400 Information Assurance Disclosure Paper
12
Ver. 1.00, May 2010
Page
12 of 44
2.4.
Scanner
2.4.1.
Purpose
The purpose of the scanner is to provide mechanical transport of hardcopy originals and to convert hardcopy
originals to electronic data.
2.4.2.
Hardware
The scanner converts the image from hardcopy to electronic data. An optional document handler moves originals
into a position to be scanned. The scanner provides enough image processing for signal conditioning and
formatting. The scanner does not store scanned images. All other image processing functions are in the copy
controller.
The DADF/Scanner contains a CPU, BIOS, RAM, and Non-Volatile Memory
.
Volatile Memory Description
Type (SRAM, DRAM, etc)
Size
User Modifiable
(Y/N)
Function or Use
Process to Clear:
SDRAM
2MB
N
Executable code, control data
Power Off System
Registers, RAM Buffer, etc
32MB
N
Image buffer (temporarily contains
part of captured image)
Power Off System
Additional Information:
All memory listed above contains code for execution and configuration information. No user or job data is permanently stored in this location.
Non-Volatile Memory Description
Type (Flash, EEPROM, etc) Size
User Modifiable
(Y/N)
Function or Use
Process to Clear:
EEPROM
8KB
N
Control set points, configuration
settings
None
Flash ROM
512KB
N
Firmware, control set points
None
Additional Information:
All memory listed above contains code for execution and configuration information. No user or job data is stored in these locations.
Table 6 Scanner memory components
2.5.
Graphical User Interface (GUI)
2.5.1.
Purpose
The GUI detects soft and hard button actuations, and provides text and graphical prompts to the user. The GUI is
sometimes referred to as the Local UI (LUI) to distinguish it from the WebUI, which is exported by the web service
that runs in the controller. Images are not transmitted to or stored in the GUI. The Start hard button is located on
the GUI panel.
2.5.2.
Hardware
The user interface contains a FPGA that contains RAM and Non-Volatile Memory
.
