Samsung VP-L900, Training Manual

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Circuit Operating Description
6-28 Samsung Electronics
6-4-3 Electronic Shutter Control
It repeats the electric charge purge pulse in the DC bias, is accelerated the electronic shutter which the drive it
makes.
1H Every at electric charge purge pulse about 1usec width it occurs in horizontal Blanking duration.
Shutter speed there is a possibility of being variable at 1/15750 second units.
The product is using until 1/10000 seconds.
(AUTO,portrait:1/60, sports :1/250, high shutter speed:1/10,000)
76 pins XSUB of the ICP06 the ICP01 (KS7221D) become the input.
The electronic shutter pulse is 3V.By the ICP01 (KS7221D) 22V with it changes.
22Vp-p The pulse is repeated in DC bias of the SUB.
It controls an electric charge accumulation hour.
READ OUT
PULSE
SUB BIAS
FIELD
READ OUT
PULSE
SHUTTER
CONTROL
PULSE
ACCUMULATION
PERIOD
V3
V1
V1 < V3
1 FIELD (1/60 SEC)
V (1/60 SEC) V (1/60 SEC)
(1/50 ~ 1/15750 SEC)
(1/15750 SEC)
H
(1/50 ~ 1/15750 SEC)
CHARGE
ELIMINATION
PERIOD
Fig. 6-23 Timming of electronic shutter
Fig. 6-24 Control of electronic shutter