ALEXANDRIA, Va., April 9 -- United States Patent no. 12,270,660, issued on April 8, was assigned to Chang'an University (Xi'an, China).

"Efficient map matching method for global positioning system (GPS) trajectory" was invented by Yuanqing Wang (Xi'an, China), Yaxiang Li (Xi'an, China), Zhouhao Wu (Xi'an, China), Minghui Xie (Xi'an, China), Sen Wei (Xi'an, China), Shuxin Jin (Xi'an, China) and Yabin Sun (Xi'an, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "An efficient map matching method for GPS trajectory includes: obtaining a valid GPS point list; obtaining a current searched end point; backtracking a best map matching path from the current searched end point, traversing GPS points along the path t...