Infrared scanning of sprocket holes
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United States of America Patent
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Apr 19, 2011
Grant Date -
Nov 22, 2001
app pub date -
Jul 6, 1998
filing date -
Jul 23, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
To be able to scan the sprocket holes of a film with improved precision by means of a film scanner, in which a correction signal is generated for compensating picture steadiness errors, it is proposed that the light source generates light in the infrared range, and that the scanning sensor(s) is (are) sensitive in the infrared range.
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