Computer input scanner incorporating multiple scanning modes
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United States of America Patent
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Apr 5, 1994
Issued Date -
N/A
app pub date -
Jul 15, 1993
filing date -
Jul 18, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A scanner useful as an input device for a computer is operable in two scanning modes: a prescanning mode in which subsampled images are rapidly output to the computer for substantially real-time display, and an input scanning mode in which three successive high resolution color scans are obtained. A fixed image is supported on a movable, hand-manipulated stage that interactively controls the conjugate distances of the optical system so that zooming and cropping is obtained without losing focus. By situating the control buttons for the scanning modes on the movable stage, a single hand can control zooming, cropping, and prescanning without having to interact with a keyboard or like input device to the computer.
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