Variable data digital pantographs
US7869090B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2008 |
| Grant date | Jan 11, 2011 |
| Priority date | — |
| Expiry date | Aug 4, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/00864
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A variable data pantograph is formed by receiving a variable data string and retrieving at least one character representation from a vocabulary of character representations stored in memory. The retrieved at least one character representation corresponds to the variable data string. Each of the character representations in the vocabulary is associated with a foreground region including a character shape and a background region suitably sized and arranged for encompassing the foreground region. The background region incorporates a first pattern of elements and is controlled to render a target color using a first set of color separation control data and the foreground region incorporates a second pattern of elements and is controlled to render the target color using a second set of color separation control data. The retrieved at least one character representation is assembled to form a variable data pantograph, whereby when the variable data pantograph is rendered in an original document, the foreground and background regions are similar in tone, the foreground and background regions being substantially less similar in tone in a copy of the original document to render the character v…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.