ALEXANDRIA, Va., June 12 -- United States Patent no. 12,299,771, issued on May 13, was assigned to MAXELL LTD. (Kyoto, Japan).

"Video display device and video display method" was invented by Mayumi Nakade (Kyoto, Japan), Tamotsu Ito (Kyoto, Japan) and Yasunobu Hashimoto (Kyoto, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A portable video display device includes a sensor that detects a position and a direction of a user, a trajectory information acquisition unit that acquires information of a migration trajectory of the user; a storage unit that stores trajectory information of the user and information of an avatar, and a display unit that displays the migration trajectory of the user with the avatar...