Gas discharge tube changeable color display and digital controller system
US6169376A · kind A · utility
4Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 1999 |
| Grant date | Jan 2, 2001 |
| Priority date | — |
| Expiry date | May 10, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B47/184
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multiple discharge tube lighting system has a plurality of gas discharge tubes positioned behind a translucent panel, within a cove or tube or in close proximity to each other and each tube is connected through a power supply to a dimming control circuit. The control circuit is used to change the brightness and on/off state of each tube to create the appearance of different colors when the tubes are viewed in combination using dimming and/or interleaving. The control circuit can match dimming curves, and stores, retrieves and sends power information for each tube to create displays which can be identically produced repeatedly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.