Electronic endoscope
US7623150B2 · kind B2 · utility
65Cited by
7References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 18, 2003 |
| Grant date | Nov 24, 2009 |
| Priority date | — |
| Expiry date | May 19, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/555
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Analog pixel signals, which are read out from an image sensor, are subjected to predetermined signal processes, and are converted to digital pixel signals by an A/D converter. The digital pixel signals are separated to RGB signals. The RGB signals are multiplied by a predetermined color matrix coefficient. After that, luminance signals are extracted from the RGB signals. A light adjusting control signal for adjusting the quantity of light is calculated based on the luminance signals. The color matrix coefficient is changed based on the light adjusting control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.