ALEXANDRIA, Va., March 3 -- United States Patent no. 12,564,763, issued on March 3, was assigned to Tonal Systems Inc. (San Francisco).

"Repetition phase detection" was invented by Brandt Belson (San Francisco) and Egor Ponomarev (Samara, Russia).

According to the abstract* released by the U.S. Patent & Trademark Office: "Controlling an exercise machine includes receiving a stream of measurements of extension of a component of an exercise machine. It further includes detecting a first phase of a repeated motion. It further includes detecting a transition to a second phase of the repeated motion. A time constraint is applied to the detection of the transition to the second phase of the repeated motion. It further includes controlling a res...