Automatic scanner calibration
US6327047A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 22, 1999 |
| Grant date | Dec 4, 2001 |
| Priority date | — |
| Expiry date | Jan 22, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6033
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An automatic scanner calibration method and apparatus is disclosed in which a calibrated target, such as a Kodak.RTM. gray strip, is attached to a scanning surface of a scanner. The target is thin and has a width or length of platen of a scanner. During a normal scan, the calibration target area can be ignored or scanned depending on user selection. If the strip is scanned, then the resulting information is used to calibrate the scanner automatically. Such calibration is more accurate than an older in time or preset default calibration Another embodiment of the invention actuates a print of a printer calibration target on a printer on a scheduled basis. Thereafter, the user can take the printer calibration target and place it on the scanner and perform a calibration of a scanner/printer system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.