ALEXANDRIA, Va., April 2 -- United States Patent no. 12,267,150, issued on April 1, was assigned to National Association of Broadcasters (Washington).

"Broadcast positioning system supporting location services through over-the-air television (TV) signals" was invented by Tariq Islam Mondal (Germantown, Md.), Robert Samuel Matheny Jr. (Beaufort, N.C.) and Robert Douglas Weller (Washington).

According to the abstract* released by the U.S. Patent & Trademark Office: "Broadcast positioning systems supporting location services through over-the-air broadcast television (TV) signals are disclosed. The broadcast positioning system supports a broadcast TV signal format that includes a transmission time of the broadcast TV. The transmission time of...