ALEXANDRIA, Va., June 4 -- United States Patent no. 12,321,664, issued on June 3, was assigned to Sharp K.K. (Sakai, Japan).

"Voice control system, voice control method, and recording medium recording voice control program" was invented by Akihiro Kumata (Sakai, Japan) and Kazuo Makijima (Sakai, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A voice control system includes a setting processing unit that sets up a conversation group including a plurality of users in a virtual space, and a restriction processing unit that restricts an output of voice which is outside the conversation group to be set by the setting processing unit to a user in the conversation group."

The patent was filed on July 11, 202...