Video endoscope system provided with color balance adjusting means
US4831437A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1988 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Apr 19, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S600/921
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video endoscope system adjustable color balance in which a color balance adjusting circuit is adjusted so that a color of an ordinary object image or of a standard object image or of an image caused by a signal delivered from a standard color signal generator which is displayed on a TV monitor for observation is the same, as that displayed on a reference color display means, or so that chromaticity of the color of the standard object image or of the image caused by the signal delivered from the standard color signal generator which is displayed on the TV monitor for observation is measured by a chromaticity measuring device and approached to a standard value, in order to make it possible to eliminate positively color variations and make color balance adjustment with high accuracy in regard to a color picture image displayed on the TV monitor of the video endoscope system. The reference color display is a TV monitor adjusted to display a reference color in predetermined chromaticity through other color balance adjusting circuit connected to an electronic image pickup system, or a standard monitor displaying the color in virtue of an input of a color signal delivered from the stand…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.