Panasonic KX-B620 Service Manual page 44

<X-B620 Series
XX-B520 Series
>h< 500nSec,
TOIT ee
RO uuud'dseuspdgysuewtuudug
P< 1usec,
[INITIAANIAANRAANAANNNNAANReaaanannnnnnanna
SHO uuu UUUUUUUUUU UU
p< 2usec,
AW Ea noonAnnAnonnnnnannanonnoanannnanr
CLKS UUULUUUUU OU YUU UU UUUUUUUbUUUU
Fig. 16 Timing Chart
@ CCD clock generation section
CCD clocks RO, SHO, M10 and TG2 are generated in this section.
Timing chart is shown above.
@ Thermal Head clock generation section
The number of CCD elements are 1,024 dots, and the number of elements of Thermal Head are 1,728
dots.
The binary converted signal from the CCD is zoomed 4/3 times, and white data for the filing space is
inserted.
This is accomplished sample the original signal by 4/3 times the frequency clock (CLKHD) .
CLKSH is two times the frequency of the CCD clock.
CLKH is thinned out in 2//3 rate from CLKSH.
The number for CLKH is 4//3 times compared with CCD clock.
Then CLKH is gated by PAPALLW signal.
White data is added moderately as a result.