Dual power supply switching system operating in parallel for providing power to a plurality of LED display modules
US7502950B1 · kind B1 · utility
58Cited by
3References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 26, 2006 |
| Grant date | Mar 10, 2009 |
| Priority date | — |
| Expiry date | Sep 19, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/08
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A dual power supply switching system for use in an electronic sign where independent suitably sized power supplies each capable of independently powering an entire plurality of LED display modules supply power on an alternating distributed basis to the plurality of LED display modules. A microcontroller having an odd or even address on each LED display module controls the connection of the respective LED display module to a particular power supply by controlling onboard solid state switches and, upon sensing an inadequate power source supply, switches to the other power supply to re-establish power to the LED display module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.