Ricoh Aficio 270 - Reception

VIDEO DATA PATH
A265/A267 1-10 SM
1.4.2 RECEPTION
First, the FCU stores the incoming data from either an analog line or an ISDN line
to the SAF memory. (The data goes to the FACE at the same time, and is checked
for error lines/frames.)
The FCU then decompresses the data and transfers it to page memory. If image
rotation will be done (see section 2-2-2), the image is rotated in the page memory.
The data is transferred to the BiCU.
If the optional G3 unit is installed, the line that the message comes in on depends
on the telephone number dialed by the other party (the optional G3 unit has a
different telephone number from the main fax board).
Note that ISDN G3 rx is not possible on the PSTN-2 line.
JBIG Reception
When data compressed with JBIG comes in on PSTN-1 (the standard analog line),
the data is sent to the EXFUNC board for decompression. Then the data is stored
in the page memory, and transferred to the BiCU.
When data compressed with JBIG comes in on PSTN-2 (optional extra analog
line), the data is sent to the QM-CODER on the SG3 board for decompression.
FCU
NCU CiG4 CiG4
Analog G3 ISDN G3 ISDN G4
Page Memory
SAF Memory
FACE
(DCR)
Printer
BiCU
FACE
(DCR)
Decompression
Error Check
Image Rotation
FACE
(VIF)
JBIG
compression
EXFUNC Board
QM-CODER
(Optional)
Modem
QM-
CODER
NCU-2
Modem
SG3
CCP
Decompression
A895V502.WMF