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:
Jul. 29, 2014
Filed:
Oct. 01, 2010
Matt Trumbo, Fort Collins, CO (US);
David K. Campbell, Loveland, CO (US);
Matt Trumbo, Fort Collins, CO (US);
David K. Campbell, Loveland, CO (US);
Pelco, Inc., Clovis, CA (US);
Abstract
A method of refocusing a video surveillance camera includes performing a first focusing operation of a camera at a first time, sensing a first temperature of the camera at the first time, sensing a second temperature of the camera at a second time, determining if a change in temperature between the first temperature and the second temperature is greater than a predetermined temperature change, sensing a level of light in a field of view of the camera at the second time, determining if the level of light sensed in the field of view of the camera at the second time is within a predetermined light level range, determining if a period of time between the first time and second time is greater than a predetermined period of time, and performing a focus operation if the change in temperature between the first temperature and the second temperature is greater than the predetermined temperature change, the level of light sensed in the field of view of the camera at the second time is within the predetermined light level range, and the period of time between the first and second time is greater than a predetermined period of time.