公开(公告)号：US20200294543A1

公开(公告)日：2020-09-17

申请号：US16562980

申请日：2019-09-06

申请人： Kabushiki Kaisha Toshiba ,  Toshiba Electronic Devices & Storage Corporation

发明人： Yoshihiko Takeda

IPC分类号： G11B19/04 ,  G11B5/012 ,  G06F1/3234

摘要： According to one embodiment, a control device to be used for a magnetic disk device includes a power source control section and a control section. The power source control section configured to change an output voltage value of a voltage supplied to the control device from a power source on the basis of a voltage control parameter. The control section configured to, when a magnetic head makes access to a zone set on a magnetic disk, set a voltage control parameter provided in such a manner as to be correspondent to the zone to the power source control section.

公开(公告)号：US11114124B2

公开(公告)日：2021-09-07

申请号：US16562980

申请日：2019-09-06

申请人： Kabushiki Kaisha Toshiba ,  Toshiba Electronic Devices & Storage Corporation

发明人： Yoshihiko Takeda

IPC分类号： G11B5/09 ,  G11B19/04 ,  G06F1/3234 ,  G11B5/012

摘要： According to one embodiment, a control device to be used for a magnetic disk device includes a power source control section and a control section. The power source control section configured to change an output voltage value of a voltage supplied to the control device from a power source on the basis of a voltage control parameter. The control section configured to, when a magnetic head makes access to a zone set on a magnetic disk, set a voltage control parameter provided in such a manner as to be correspondent to the zone to the power source control section.

公开(公告)号：US20190065081A1

公开(公告)日：2019-02-28

申请号：US15919421

申请日：2018-03-13

申请人： Kabushiki Kaisha Toshiba ,  Toshiba Electronic Devices & Storage Corporation

发明人： Yoshihiko Takeda ,  Tomonari Tashiro

IPC分类号： G06F3/06 ,  G06F12/0868 ,  G06F12/02 ,  G11C16/10 ,  G06F13/16 ,  G06F1/30

摘要： According to one embodiment, a disk device includes a disk, a plurality of flash ROMs, a head, a cache memory, and a controller. The controller is configured to execute an operation when supply of power from an external power supply is interrupted while writing of data into the disk is performed by using power supplied from the external power supply, wherein the operation includes writing data stored in the cache memory into the flash ROMs in order, by means of serial communication, by using power supplied from an auxiliary power supply. Here, the controller writes data into a first flash ROM of the plurality of flash ROMs, and, in parallel therewith, reads data from a second flash ROM of the plurality of flash ROMs where writing of data is not performed, by means of serial communication.