ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,556,387, issued on Feb. 17, was assigned to The Chamberlain Group LLC (Oak Brook, Ill.).
"Method and apparatus to facilitate transmission of an encrypted rolling code" was invented by James J. Fitzgibbon (Batavia, Ill.), Eric Gregori (Lindenhurst, Ill.) and Edward Thomas Laird (Lombard, Ill.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An encrypted rolling code, a plurality of differing data bit order patterns, and a plurality of differing data inversion patterns are provided. One then selects a particular one of each of these patterns and uses those selected patterns as transmission characteristics when transmitting at least part of the encrypted rol...