Screening method for overlapping sub-images
US7231096B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2003 |
| Grant date | Jun 12, 2007 |
| Priority date | — |
| Expiry date | Mar 4, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/1911
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and system for reproducing an image on a carrier, the method includes: generating a conjoined first and second sub-image, each representative for a portion of the image; defining an overlap region where both sub-images give a contribution to the internal optical density of the carrier; dividing the overlap region in a partition of microdots; establishing for each sub-image a peripheral edge in the overlap region; increasing the contribution by the first sub-image from the peripheral edge of the first sub-image to the peripheral edge of the second sub-image; and assigning to at least one microdot an intermediate microscopic density different from a minimum or maximum microscopic density of microdots; wherein the contribution increases the microscopic density of the microdots by density steps smaller than half the difference between the minimum and maximum microscopic densities of the microdots.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.