Video camera with manual color balance adjusting option
US5119178A · kind A · utility
22Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 18, 1991 |
| Grant date | Jun 2, 1992 |
| Priority date | — |
| Expiry date | Jan 18, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/88
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video camera whereby the photographer can switch from an automatic to a manual adjustment mode. In the manual mode a color bar chart on a lens cap is pictured on part of the viewfinder of the camera, while an electronically generated reference color bar chart is shown on the other part. The user adjusts one or two potentiometers, each adjusting the gain of a color signal amplifier, until the two color bar charts have the same colors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.