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长春光学精密机械与物... [1]
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会议论文 [1]
发表日期
2008 [1]
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Driving techniques for high frame rate CCD camera (EI CONFERENCE)
会议论文
Electronic Imaging and Multimedia Technology V, November 12, 2007 - November 15, 2007, Beijing, China
Guo W.
;
Jin L.
;
Xiong J.
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提交时间:2013/03/25
This paper describes a high-frame rate CCD camera capable of operating at 100 frames/s. This camera utilizes Kodak KAI-0340
an interline transfer CCD with 640(vertical)480(horizontal) pixels. Two output ports are used to read out CCD data and pixel rates approaching 30 MHz. Because of its reduced effective opacity of vertical charge transfer registers
interline transfer CCD can cause undesired image artifacts
such as random white spots and smear generated in the registers. To increase frame rate
a kind of speed-up structure has been incorporated inside KAI-0340
then it is vulnerable to a vertical stripe effect. The phenomena which mentioned above may severely impair the image quality. To solve these problems
some electronic methods of eliminating these artifacts are adopted. Special clocking mode can dump the unwanted charge quickly
then the fast readout of the images
cleared of smear
follows immediately. Amplifier is used to sense and correct delay mismatch between the dual phase vertical clock pulses
the transition edges become close to coincident
so vertical stripes disappear. Results obtained with the CCD camera are shown.
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