The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 29, 2008
Filed:
Jul. 13, 2005
Richard Allen Kolk, Glastonbury, CT (US);
Richard Allen Kolk, Glastonbury, CT (US);
Carrier Corporation, Farmington, CT (US);
Abstract
A thermostat () for sensing the ambient temperature in an environment includes an enclosure () housing a temperature sensor () for sensing the temperature within the enclosure, a temperature display device (), a liquid crystal display (LCD) backlight () operative in its on state to illuminate the temperature display. A controller () operatively associated with the thermostat monitors the current on/off state of the backlight and the length of time the backlight has been in its current state, estimates a temperature correction factor using a simplified Discrete Kalman Filter estimator, and applies the temperature correction factor to correct the sensed temperature for the heat generated by the backlight ().