Canon GP215 Service Manual page 98

3. OPERATIONS AND TIMING
g. Repeat
< Original >
Main scanning direction
a
Address S
Address E
< Copy >
a a a a
Figure 3-324
Principle
When reading data for a single scan from
RAM, a start address (address S) and an end
address (address E) are specified. Then, reading
is started at address S; when address E is
reached, a return is made to address S. A specif-
ic image is repeated by repeating these opera-
tions.
Address
12345678
• • •
1 pixel (1 byte)
Figure 3-325
3–44
COPYRIGHT © 1996 CANON INC.
nnn
• • •
-1 -2
Reading
CANON GP215/200 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
h. Slant
< Original >
Main scanning
direction
a b c
a b c
Figure 3-326
Principle
When reading data for a single scan from
RAM, the start address is shifted for each read-
ing, thereby slanting the image.
Address
12345678
• • •
1 pixel (1 byte)
Figure 3-327
< Copy >
a b c
nnn
• • •
-1 -2
Reading
1st line
2nd line
3rd line
4th line