Electronic display dimming circuit
US4516055A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 27, 1983 |
| Grant date | May 7, 1985 |
| Priority date | — |
| Expiry date | May 27, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S315/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A display dimming circuit is disclosed which provides a coordinated automatic display brightness level adjustment for a plurality of instruments associated within the same general region. Its use in an aircraft cockpit, for example, allows the left, or captain's instruments, to be coordinated to be responsive to the ambient light in that region of the cockpit and the co-pilot's bank of instruments, or right region, of the aircraft is separately coordinated such that both regions exhibit appropriate brightness levels on all instruments. In this manner, gas discharge displays, for example, are installed adjacent cathode ray tube displays or vacuum fluorescent displays and all are effectively maintained at an appropriate lighting level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.