US Patent Issued to Cirrus Logic on July 1 for "On-device loudspeaker reference resistance determination" (American, Italian Inventors)

ALEXANDRIA, Va., July 3 -- United States Patent no. 12,348,940, issued on July 1, was assigned to Cirrus Logic Inc. (Austin, Texas).

"On-device loudspeaker reference resistance determination" was invented by Sandeep P. Sira (Gilbert, Ariz.), Philip B. J. Clarkin (Austin, Texas) and Roberto Napoli (Milan).

According to the abstract* released by the U.S. Patent & Trademark Office: "This disclosure provides techniques for determining a reference resistance of a loudspeaker, such as in a mobile device. The reference resistance value may be used, among other applications, for speaker protection by reducing overdrive of the loudspeaker beyond safe temperature, which could damage the loudspeaker, while allowing driving of the loudspeaker closer ...