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:
Aug. 05, 2025
Filed:
Mar. 28, 2023
Stmicroelectronics S.r.l., Agrate Brianza, IT;
Dario Livornesi, Milan, IT;
Mattia Fausto Moretti, Monza, IT;
Paolo Pulici, Lainate, IT;
Alessio Emanuele Vergani, Milan, IT;
Alessio Facen, Macerata, IT;
Michele Bartolini, Carpiano, IT;
Roberto Faravelli, Pavia, IT;
Francesco Piscitelli, Milan, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
Abstract
According to an embodiment, a circuit includes a core and low-frequency recovery circuits. The core circuit is configured to bias a resistive sensor used to measure a fly height of a hard disk drive. The core circuit is additionally configured to amplify a high-frequency component of a sensing signal of the resistive sensor, the sensing signal indicating the fly height. The low-frequency recovery circuit is configured to amplify the sensing signal's low-frequency component.