Jbig Reception - Ricoh B202 Service Manual

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VIDEO DATA PATH

5.3.2 RECEPTION

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 IPU.

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 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.

B712D512.WMF

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