Jbig Reception - Ricoh B264 Service Manual

VIDEO DATA PATH
4.3.2 RECEPTION
Analog G3
QM-CODER
NCCP
First, the FCU stores the incoming data from either an analog line to the SAF
memory. (The data goes to the FACE3 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, 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).

JBIG Reception

When data compressed with JBIG comes in on PSTN-1 (the standard analog line),
the data is sent to the QM-CODER 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.
B779
NCU
Modem
CCD (DCR)
SG3
Analog G3
NCU
Modem
SAF
DCR QM-CODER
Page Memory
FACE3
FBI
BICU
Printer
116
DCR
FCU
B779D905 WMFWMF
SM