
4-6 Sensors and Sensor Technology
GateBias
Reset
Transfer
Capacitive
storage node
I
bias
n
+
n
+
DD
V
DD
Row_select
Column_bus
FIGURE 4.7 Electronic shutter implementation with photogate.
Row_select
V
DD
Capacitive node
V
DD
– V
TN
V
DD
– V
TN
Photodiode node
Time
Time
Time
Transfer
Time
V
DD
Time
V
DD
Exposure
Frame period
Pixel access
FIGURE 4.8 Electronic shutter control waveform.