Facsimile Section; Image Data Flow During Facsimile Operation - Panasonic KX-FM89BX Service Manual

CROSS REFERENCE:
THERMAL HEAD()

6.4. FACSIMILE SECTION

6.4.1. IMAGE DATA FLOW DURING FACSIMILE OPERATION

COPY (Fine, Super-Fine, Half Tone)
1. Line information is read by CIS (to be used as the reference white
level) via route 1, and is input to IC501. Refer to 6.4.2. Block
Diagram.
2. In IC501, the data is adjusted to a suitable level for A/D
conversion in the Analog Signal Processing Section, and via route
2, it is input to A/D conversion (8 bit). After finishing A/D
conversion, the data is input to the Image Processing Section via
route 3. Then via routes 4 and 5, it is stored in RAM as shading
data.
3. The draft's information that is read by CIS is input to IC501 via
route 1. After it is adjusted to a suitable level for A/D conversion
via route 2, the draft's information is converted to A/D (8 bit), and
it is input to the Image Processing Section. The other side, the
shading data which flows from RAM via routes 6 and 7, is input to
the Image Processing Section. After finishing the draft's
information image processing, white is regarded as "0" and black
is regarded as "1". Then via routes 4 and 5, they are stored in
RAM.
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