Method for correcting quantity of emitted light
US6104509A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 21, 1997 |
| Grant date | Aug 15, 2000 |
| Priority date | — |
| Expiry date | Oct 21, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/80
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
When an image is scanned and recorded on a photosensitive material, the quantity of emitted light of each of light emitting elements is corrected by controlling, based on digital image data, quantities of light beams emitted from light emitting portions of three colors, which each consist of a plurality of light emitting elements. A drive signal level of each of the light emitting elements is corrected for the same digital image data so that the light emitting elements which emit light beams of the same color have the same quantities of emitted light. Subsequently, the drive signal level of each of the light emitting elements is corrected for predetermined digital image data so that the ratio of the quantity of emitted light between the light emitting elements, which emit light beams of different colors, is set at a predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.