Streak compensation using model based projections for run time updates
US8400683B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 2010 |
| Grant date | Mar 19, 2013 |
| Priority date | — |
| Expiry date | Oct 8, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/506
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Streak compensation in a digital printer is provided utilizing a spatially varying Printer Model and Run Time updates to generate Spatially Varying Tone Reproduction Curves (STRCs) which are used as actuators to compensate for streaks during run time. A full width array sensor is used to measure streak profiles and the STRCs are used as actuators to compensate for streaks. Streak profile measurements taken at a limited number of area coverage levels combined with a Printer Streaks Basis Function Model are used to estimate and project the streak behavior at all area coverage levels and at all inboard-to-outboard spatial locations. The projection is then used in a pixel-wise error feedback control scheme to drive each profile to a desired shape, thereby compensating for streaks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.