US Patent Issued to Sonos on April 15 for "Audio encryption in a media playback system" (Massachusetts, Washington Inventors)

ALEXANDRIA, Va., June 5 -- United States Patent no. 12,279,008, issued on April 15, was assigned to Sonos Inc. (Goleta, Calif.).

"Audio encryption in a media playback system" was invented by Won So (Boston), Ted Lin (Ayer, Mass.) and Derek W. Erdmann (Duvall, Wash.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A first playback device is configured to obtain audio content from a cloud-based media service, the audio content encrypted according to a first encryption scheme. The first playback device is configured to communicate with a cloud-based license service to obtain information for decrypting the audio content and use the obtained information to decrypt the audio content. The first playback device is als...