Optical: systems and elements – Optical modulator – Light wave temporal modulation
Reexamination Certificate
2006-11-07
2006-11-07
Dang, Hung Xuan (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave temporal modulation
Reexamination Certificate
active
07133181
ABSTRACT:
A control system for an electrochromic (EC) device is capable of monitoring the temperature of the EC device without requiring an external temperature monitoring element, and then controlling the EC device based, in part, upon the temperature readings. The control system also provides methods for heating the EC device using current flowing through the device and for simultaneously heating and changing the transmissivity level of the device. The controller also provides security feedback by detecting glass breakage via a high frequency impedance measurement of the EC device. The controller also provides for methods of determining the bleaching/coloring history of the EC device, determining the transmission state of the EC device and applying a holding voltage to maintain the transmission state of the EC device.
REFERENCES:
patent: 4972176 (1990-11-01), Vallance
patent: 5130842 (1992-07-01), Gauthier et al.
patent: 5231531 (1993-07-01), Defendini et al.
patent: 5365365 (1994-11-01), Ripoche et al.
patent: 5627509 (1997-05-01), Gajewski et al.
patent: 5648758 (1997-07-01), Tweadey, II et al.
patent: 6856444 (2005-02-01), Ingalls et al.
patent: 2004/0001056 (2004-01-01), Atherton et al.
patent: 2 126 365 (1984-03-01), None
patent: WO-03/054823 (2003-07-01), None
Partial European Search Report, EP 05 01 2984, Dated: Oct. 4, 2005.
European Search Report, EP 05 02 5427, Dated, Feb. 21, 2006.
INOUE, “Electric equivalent circuit in coloration process of ECD and the application for circuit design”, The Institution of Electrical Engineers, Stevenage, GB, Dec. 1992.
O'Brien et al, “Electrochromic coatings-applications and manufacturing issues”, Thin Solic Films, Elsevier-Sequoia S.A. Lausanne, CH, vol. 345, No. 2, May 21, 1999, pp. 312-318.
Dang Hung Xuan
Lerner David Littenberg Krumholz & Mentlik LLP
Sage Electrochromics, Inc.
Tra Tuyen
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