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:
Feb. 28, 2006
Filed:
May. 01, 2003
D. Ralph Jones, Guilford, CT (US);
David G. Bellemore, Fairfield, CT (US);
D. Ralph Jones, Guilford, CT (US);
David G. Bellemore, Fairfield, CT (US);
CiDRA Corporation, Wallingford, CT (US);
Abstract
A method and apparatus is provided for detecting peaks in an optical signal. The method comprises the three basic steps of: (1) sampling the optical signal to obtain sampled data containing information about the optical signal; (2) applying a cross-correlation filter on the sampled data to obtain cross-correlated data containing information about one or more peaks in the optical signal; and (3) detecting the one or more peaks in the optical signal based on the cross-correlation data. In one embodiment, the cross-correlation filter has an average value that is less than zero. The step of applying the cross-correlation filter includes reducing random noise present in the sampled data to remove quasi-dc components from the sampled data.