Image enhancement through digital darkness control
US5408329A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1992 |
| Grant date | Apr 18, 1995 |
| Priority date | — |
| Expiry date | Sep 8, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2215/0077
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A printing machine having an imaging surface, a scanning system for modulating a beam and scanning an image onto the imaging surface, a device to designate a variable relative darkness factor, a store for holding a partial array of the image to be reproduced, a comparator for relating the partial array of the image to be reproduced with standard reference formats to produce correlation signals, modulating logic responsive to the correlation signals and the variable relative darkness factor to provide timing adjustments and a modulator for modulating the beam and scanning the image onto the imaging surface in response to the timing adjustments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.