Multimode motion-activated lighting
US6927541B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 16, 2003 |
| Grant date | Aug 9, 2005 |
| Priority date | — |
| Expiry date | Jun 16, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motion detector circuit arrangement having multiple modes of operation for energizing a light at a nominal full-brightness illumination level in response to motion. Background level circuitry provides a dual-use lighting level signal that indicates the background levels with which the light may be energized in the absence of motion when operating in the various modes. The dual-use level signal is applied to cause the light to be energized at the desired background level and is further applied to set at least one other characteristic of the motion-activated light associated with the selected background level. The dual-use level signal may be applied to activate and establish an intermediate background lighting level to provide accent mode lighting and also be applied to disable a manual override capability. The manual override capability is preserved in security mode so that it will operate when these is no background lighting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.