FT18 データシートの表示（PDF） - Philips Electronics
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FT18 Datasheet PDF : 16 Pages
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Philips Semiconductors
Frame Transfer CCD Image Sensor
Product specification
FT 18
Frame Timing
Frame Transfer (FT):charge image (all lines) is moved from image to storage
by the image and storage clocks together (see Figure "Frame Shift Timing").
internal
LINE
counter 1109 1110 1111 1112 1113 1114 1115 1116 ...... 1119 1120 1121 1122 ...... 1250 1
...... 26 27 ...... 70 71 72 73
74 75 76 77 78 79 80 81 82 83 ...... 86 87 88
video 1024 D D B B BLC BLC B
BDDE
line no.
Charge Pump (CP): a measure to reduce dark current due to interface states.
A1 H
L
For details see figure 3 "Line and pixel timing diagrams".
A2 H
L
A3 H
L
A4 H
L
E E E E B B BLC BLC B B D D C
C1 2
B1 H
L
B2 H
L
B3 H
L
B4 H
L
Hustle: moving the charge packets of one line from storage to the output register.
For details see figure 3 "Line and pixel timing diagrams".
SSC H
L
CR H
L
BLC H
L
PB H
L
CB H
L
Linetime: the C-clocks shift charge packets one-by-one to the selected output buffer.
For details see figure 3 "Line and pixel timing diagrams".
By adding one CR-pulse during the horizontal blanking,
the effective integration time is decreased: "electronic shuttering"
CR before nominal integration
Black-Level Clamp (BLC): the video processing clamps the black lines to determine its output zero-level.
Frame Shift Timing
Tp=1/(36MHz) = 27.8ns
A1 H
1
L
A2 H
L
A3 H
L
H
A4
L
48 Tp 750kHz
2
1047
1048
B1 H
L
B2 H
L
B3 H
L
H
B4
L
1
2
1047
1048
30Tp
18Tp
for all A and B clocks,
duty cycle = 5/8
Figure 4 - Frame timing diagrams
2000 January
7
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