Method and apparatus for controlling an electrochromic device
US6614577B1 · kind B1 · utility
127Cited by
13References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2000 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Nov 7, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/163
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method and apparatus for controlling a charge/discharge voltage applied to an EC device to ensure that an appropriate voltage drop across the EC device is maintained during charge and/or discharge modes of operation. The appropriate voltage drop is determined with respect to a temperature measurement proximate the EC device. The charge level of the device is monitored using a coulomb counter circuit having a topology designed to minimize interference in the operation of the EC device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.