ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,554,338, issued on Feb. 17, was assigned to Logitech Europe S.A. (Lausanne, Switzerland).

"Wireless communication protocol for key activation without an acknowledgement" was invented by Daniel Blasco Serrano (Geneva), Philippe Chazot (Saint-Jorioz, France) and David Farcy (Epalinges, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "An input device detects a key press or release and when the same key has not been pressed or released since a last acknowledgement, a no-acknowledgement packet with key data for that period and any other key data since the last acknowledgement is wirelessly transmitted to the host. When the same key has been pressed...