Electrochromic system with measurement of charge to be transferred
US5365365A · kind A · utility
145Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1993 |
| Grant date | Nov 15, 1994 |
| Priority date | — |
| Expiry date | Apr 29, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/38
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electrochromic system for controlling the color state of an electrochromic pane. The charge needed to obtain the desired color is determined from the discharge potential of the system and the coloration set-point. An integrator measures the charge passing through the system and compares it to the charge to be transferred. This charge is measured by a differential amplifier which compares a discharge potential measured by a capacitor with a selected color set-point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.