ALEXANDRIA, Va., June 9 -- United States Patent no. 12,652,027, issued on June 9, was assigned to Canon K.K. (Tokyo).
"Data carrier apparatus, communication system, and replaceable unit" was invented by Ichiro Iijima (Kanagawa, Japan) and Hirotaka Ittogi (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a data carrier apparatus, a first determination unit determines a duty ratio of each pulse of a pulse signal received from a data carrier driving apparatus, and a second determination unit determines a frequency of each pulse of the received pulse signal. A calibration unit performs calibration of a reference value to be used for determination performed by the second determination unit, durin...