Data processing: generic control systems or specific application – Specific application – apparatus or process – Specific application of temperature responsive control system
Reexamination Certificate
2005-08-31
2008-12-02
Buhr, M.N. Von (Department: 2121)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Specific application of temperature responsive control system
C345S102000, C236S094000
Reexamination Certificate
active
07460933
ABSTRACT:
A user adjustable visual display system and method for a digital thermostat having a backlit user display screen and system operation indicators is provided. The system allows a user to programmatically vary the illumination intensity of the backlit user display screen and the operational indicators. The variance provided includes disabling of the backlight and operational indicators. The system utilizes a variable pulse width modulated (PWM) intensity control for the backlight and indicators. Alternatively, an adjustable current drive illumination control is used to control the backlight and indicators. The selection of the desired intensity is provided via a display settings menu accessed via the user display screen.
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Theta Engineering, “Smart” Thermostat, website, date last visited Oct. 26, 2006, previously visited Oct. 27, 2005, 3 pages, http://www.thetaeng.com/SmartThermostat.htm.
Catlin George N
Chapman, Jr. John Gilman
Hockensmith Brian
Buhr M.N. Von
Ranco Incorporated of Delaware
Reinhart Boerner Van Deuren P.C.
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