The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 28, 2026
Filed:
Jun. 17, 2024
SK Hynix Inc., Icheon-si, KR;
Jae Hyeong Hong, Icheon-si, KR;
Gwan Woo Kim, Icheon-si, KR;
Beom Kyu Seo, Icheon-si, KR;
Keun Seon Ahn, Icheon-si, KR;
Sung Hwa Ok, Icheon-si, KR;
Ji Young Lee, Icheon-si, KR;
Jun Seo Jang, Icheon-si, KR;
Jae Hoon Jung, Icheon-si, KR;
Eun Ji Choi, Icheon-si, KR;
SK hynix Inc., Icheon-si, KR;
Abstract
An impedance calibration circuit includes a code generation circuit and a code update control circuit. The code generation circuit generates a first impedance code set by performing an impedance adjustment operation within an activated period of a data output enable signal generated in response to a read command. The code update control circuit prevents updating a second impedance code set to the first impedance code set until deactivation of the data output enable signal, wherein the second impedance code set is used in impedance adjustment of a transmitting circuit.