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5256868 |
Contact scanners for scanning images of an illuminated film onto a photosensor array
Film contact scanners are provided which irradiate a first surface of a film with a light source, and receive an image of the film from a second side of the film at an array of photosensors. In a...
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5023922 |
Optical character reader
An optical scanning system operates asynchronously by electro-optically detecting movement of a scanning unit directly from the data being scanned. A first embodiment of the system includes two...
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4809351 |
Optical character reader
An optical scanning system operates asynchronously by electro-optically detecting movement of a scanning unit directly from the data being scanned. A first embodiment of the system includes two...
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