Scanner with electronic non-linearity compensation and method of processing image data
US5117243A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1990 |
| Grant date | May 26, 1992 |
| Priority date | — |
| Expiry date | Apr 6, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04798
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A scanner system includes a light source and scanning components for moving a spot of light across a surface along a scan line of predetermined length. An electronic control system is included for controlling the light beam in order to produce a plurality of pixels on the surface along the scan line. It is configured to control the position and exposure of each of the pixels in order to compensate for pixel position distortion and pixel exposure distortion caused by variations in spot velocity. Preferably, the control system produces a digital scan clock signal or other control signal that defines a pixel interval and an exposure interval for each of a plurality of desired pixel positions along the scan line according to stored pixel interval and exposure interval data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.