Reception; Jbig Reception - Ricoh B051 Service Manual

VIDEO DATA PATH

5.3.2 RECEPTION

Analog G3
Modem
QM-CODER
NCCP
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, 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 dialled 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 Function Upgrade Unit for decompression. Then the data is
stored in the page memory, and transferred to the IPU.
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.
B502
CÓPIA NÃO CONTROLADA
NCU
CCD (DCR)
SG3
CÓPIA NÃO CONTROLADA
Analog G3
NCU
Modem
SAF
DCR QM-CODER
Page Memory
FACE2
FBI
BICU
Printer
136
ISDN G3 ISDN G4
SiG4
DCR
FCU
B502D512.WMF
SM