ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,487,708, issued on Dec. 2, was assigned to SAMSUNG ELECTRONICS Co. Ltd. (Suwon-si, South Korea).
"Active pen, touch controller, and method of operating active pen" was invented by Choonghoon Lee (Suwon-si, South Korea), Kiup Kim (Suwon-si, South Korea), Seunghoon Baek (Suwon-si, South Korea) and Yoonion Hwang (Suwon-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "An active pen adapted for use with a touch pad includes: a receiving circuit configured to generate an internal signal in response to modulating a received uplink signal, a first filter configured to generate a first sampling signal by sampling the internal signal at a first frequ...