Method and apparatus for controlling an electrochromic device
US5973819A · kind A · utility
148Cited by
21References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1998 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Sep 21, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/163
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention comprises an apparatus and methodology facilitating an accurate, user-friendly system for controlling the charge state (i.e., color level) of an electrochromic device. The invention provides a two button control methodology implemented as a sequential logic controller or, in another embodiment, a microprocessor-based controller. After initiation via, e.g., an external switch, the invention iteratively modifies and measures a charge level of the electrochromic device until an additional switch activation or until a maximal or minimal charge level is achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.