公开(公告)号：US11942113B2

公开(公告)日：2024-03-26

申请号：US18166291

申请日：2023-02-08

Applicant: STMICROELECTRONICS KK ,  STMICROELECTRONICS S.r.l.

Inventor： Marco Ferrari ,  Davide Betta ,  Diego Tognoli ,  Roberto Trabattoni

IPC: G11B5/54 ,  G11B5/48 ,  G11B21/08

CPC classification number: G11B21/083

Abstract: In accordance with an embodiment, a hard disk drive includes voice coil motors (VCMs) coupled to respective control units configured to drive retract an operation of the VCMs in the hard disk drive. The retract operation of the VCMs includes a sequence of retract steps. The control units are allotted respective time slots for communication over a communication line with the respective time slots synchronized via the common clock line, and are configured to drive sequences of retract steps of the VCMs in the hard disk drive in a timed relationship.

公开(公告)号：US20230267963A1

公开(公告)日：2023-08-24

申请号：US18166291

申请日：2023-02-08

Applicant: STMICROELECTRONICS KK ,  STMICROELECTRONICS S.r.l.

Inventor： Marco Ferrari ,  Davide Betta ,  Diego Tognoli ,  Roberto Trabattoni

IPC: G11B21/08

CPC classification number: G11B21/083

Abstract: In accordance with an embodiment, a hard disk drive includes voice coil motors (VCMs) coupled to respective control units configured to drive retract an operation of the VCMs in the hard disk drive. The retract operation of the VCMs includes a sequence of retract steps. The control units are allotted respective time slots for communication over a communication line with the respective time slots synchronized via the common clock line, and are configured to drive sequences of retract steps of the VCMs in the hard disk drive in a timed relationship.

公开(公告)号：US20240212714A1

公开(公告)日：2024-06-27

申请号：US18597484

申请日：2024-03-06

Applicant: STMicroelectronics KK ,  STMicroelectronics S.r. l.

Inventor： Marco Ferrari ,  Davide Betta ,  Diego Tognoli ,  Roberto Trabattoni

IPC: G11B21/08

CPC classification number: G11B21/083

Abstract: In accordance with an embodiment, a hard disk drive includes voice coil motors (VCMs) coupled to respective control units configured to drive retract an operation of the VCMs in the hard disk drive. The retract operation of the VCMs includes a sequence of retract steps. The control units are allotted respective time slots for communication over a communication line with the respective time slots synchronized via the common clock line, and are configured to drive sequences of retract steps of the VCMs in the hard disk drive in a timed relationship.