公开(公告)号：US12170103B2

公开(公告)日：2024-12-17

申请号：US18448737

申请日：2023-08-11

Applicant: STMicroelectronics International N.V.

Inventor： Paolo Pulici ,  Michele Bartolini ,  Enrico Sentieri ,  Enrico Mammei ,  Matteo Tonelli ,  Dennis Hogg

IPC: G11B5/60 ,  G11B21/10

Abstract: A system for determining a fly height includes a first head of a disk drive, a second head of the disk drive, a capacitive sensor circuit coupled to the first head and the second head, and a logic device coupled to the capacitive sensor circuit. The capacitive sensor circuit is configured to measure a first capacitance between the first head and the first disk, remove noise from the first capacitance using a second capacitance between the second head and the second disk, and based thereon determine a corrected first capacitance. The logic device is configured to determine the fly height between the first head and the first disk using the corrected first capacitance.

公开(公告)号：US20240005956A1

公开(公告)日：2024-01-04

申请号：US18448737

申请日：2023-08-11

Applicant: STMicroelectronics International N.V.

Inventor： Paolo Pulici ,  Michele Bartolini ,  Enrico Sentieri ,  Enrico Mammei ,  Matteo Tonelli ,  Dennis Hogg

IPC: G11B5/60

CPC classification number: G11B5/607 ,  G11B5/6017

Abstract: A system for determining a fly height includes a first head of a disk drive, a second head of the disk drive, a capacitive sensor circuit coupled to the first head and the second head, and a logic device coupled to the capacitive sensor circuit. The capacitive sensor circuit is configured to measure a first capacitance between the first head and the first disk, remove noise from the first capacitance using a second capacitance between the second head and the second disk, and based thereon determine a corrected first capacitance. The logic device is configured to determine the fly height between the first head and the first disk using the corrected first capacitance.

公开(公告)号：US20250069623A1

公开(公告)日：2025-02-27

申请号：US18946503

申请日：2024-11-13

Applicant: STMicroelectronics International N.V.

Inventor： Paolo Pulici ,  Michele Bartolini ,  Enrico Sentieri ,  Enrico Mammei ,  Matteo Tonelli ,  Dennis Hogg

IPC: G11B5/60

Abstract: A system for determining a fly height includes a first head of a disk drive, a second head of the disk drive, a capacitive sensor circuit coupled to the first head and the second head, and a logic device coupled to the capacitive sensor circuit. The capacitive sensor circuit is configured to measure a first capacitance between the first head and the first disk, remove noise from the first capacitance using a second capacitance between the second head and the second disk, and based thereon determine a corrected first capacitance. The logic device is configured to determine the fly height between the first head and the first disk using the corrected first capacitance.