Charge-coupled device having overexposure control
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United States of America Patent
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-
Jul 18, 1989
Grant Date -
N/A
app pub date -
Jan 25, 1988
filing date -
Feb 6, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A charge-coupled image sensor arrangement has an overexposure adjustment feature whereby the excess of generated electrons is drained in vertical direction to the substrate. In order to adjust the maximum acceptable extent of overexposure, an additional low voltage can be applied to the blocking gates. As a result, it is possible to adjust the maximum overexposure without the maximum white level being variable. Due to the fact that the blocking voltage is a d.c. voltage, the dissipation substantially does not increase.
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