Multi-mode charge-coupled imager having plural readout sampling frequencies
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United States of America Patent
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Feb 26, 2008
Grant Date -
Dec 19, 2002
app pub date -
Jun 13, 2002
filing date -
Jun 14, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A charge-coupled imager includes an imaging section, a read-out section, and a way to reduce the number of charge packets for every row read. The imager is switchable between at least two read-out modes. The imaging section includes image elements arranged in a two-dimensional pattern. The read-out section includes at least a first horizontal CCD channel disposed beside the two-dimensional pattern, a second horizontal CCD channel and vertical CCD channels interlineated within the pattern of image elements. The imager is operable so that every image element of a row is individually readable in a first read-out mode using the first horizontal CCD channel comprising n charge storage locations. The imager is further operable in a second read-out mode so that a lower horizontal sampling frequency is read from the read-out section than in the first read-out mode using a second horizontal CCD channel comprising fewer storage locations than n.
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