ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,212,913, issued on Jan. 28, was assigned to D&M Holdings Inc. (Kanagawa, Japan).
"Earphone device" was invented by Shinya Narisawa (Kanagawa, Japan), Osamu Horikawa (Kanagawa, Japan) and Jun Shiroishi (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "[Problem] To provide an earphone device with which a user can satisfactorily listen to audio data regardless of the wearing state of an earphone. [Solution] This earphone device 1, which receives audio data wirelessly transmitted through short range wireless communication such as Bluetooth (registered trademark) from a portable music player, a smartphone, or the like, and outputs the received ...