mechanical scanner

mechanical scanner

[mi′kan·ə·kəl ′skan·ər]
(computer science)
In optical character recognition, a device that projects an input character into a rotating disk, on the periphery of which is a series of small, uniformly spaced apertures; as the disk rotates, a photocell collects the light passing through the apertures.
References in periodicals archive ?
Imaging LIDARs based on compressive sensing offer more compact systems as they do not need mechanical scanners and in addition the signal to noise ratio available for each measurement is much higher thanwhen directly compared with flash type systems thereby offering longer range/lower power operation than other techniques.
Most common errors of mechanical scanners existing on lens edging machines, are due to the radius of curvature of the frames of glasses and to a small deformation of them that takes place in the fixing process on clamping dies.
Hudson's scanner's sweep times are measured in nanoseconds, not milliseconds, and it is capable of vector scanning techniques, as opposed to raster scanning, a capability that is unique to all exiting mechanical scanners.
This technique, called raster scanning, is commonly found in televisions and computer monitors that employ scanned electron beams, but according to the company, it is not the most efficient way to draw an image with a system that employs mechanical scanners.

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