IMAGE SENSOR WITH DOUBLE CHARGE TRANSFER FOR LARGE DYNAMIC RANGE AND METHOD OF READING
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United States of America Patent
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N/A
Issued Date -
Sep 29, 2011
app pub date -
Dec 10, 2009
filing date -
Dec 12, 2008
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The invention relates to image sensors with active pixels.) in the same capacitor. This second sampling depends on the observation of the potential of the column conductor after the integration of charges corresponding to the longer period; this potential is compared to a threshold. If the comparison indicates a risk of saturation, the information collected during the shorter period is collected and retained in the sampling capacitor in order for it to be multiplied by a coefficient representing the ratio between the longer period and the shorter period. If the comparison indicates that there is no risk of saturation, the information collected during the longer period is collected and retained in the sampling capacitor. The shorter period is, in principle, the first period.
First Claim
Other Claims data not available