• US 7,640,069 "Editing audio directly in frequency space," by David E. Johnston, filed 30 March 2006, issued 29 December 2009, assigned to Adobe Systems Inc. (San Jose, CA) .
• US 7,555,432 "Audio steganography method and apparatus using cepstrum modification," by Kaliappan Gopalan, filed 10 February 2006, issued 30 June 2009, assigned to Purdue Research Foundation (West Lafayette, IN) .
• US 7,522,773 "Using time in recognizing persons in images," by Andrew C. Gallagher, Madirakshi Das, and Peter O. Stubler, filed 28 April 2005, issued 21 April 2009, assigned to Eastman Kodak Company (Rochester, NY)

. Interested in sharing a recent patent you know?  Please contact Associate Editor Dr. Yan Lindsay Sun at <yansun AT ele.uri.edu> with the patent information related to signal processing. We are particularly interested in patents by SPS members and issued within the past six months.