DATA STORAGE DEVICES WITH INTEGRATED SLIDER VOLTAGE POTENTIAL CONTROL

    公开(公告)号:US20200349969A1

    公开(公告)日:2020-11-05

    申请号:US16833942

    申请日:2020-03-30

    IPC分类号: G11B5/39 G11B5/012 G11B5/31

    摘要: Disclosed herein is a data storage device comprising a recording media, a slider comprising a write head having a write-field enhancement structure for recording data to the recording media, an electronics module, and a plurality of lines disposed between and coupled to the slider and the electronics module, wherein at least one line of the plurality of lines is configured to both couple a bias voltage to a body of the slider, and carry a bias current for the write-field enhancement structure. Also disclosed herein is a data storage device comprising a slider with an embedded contact sensor, an electronics module, and a plurality of lines disposed between and coupled to the slider and the electronics module, wherein at least one line of the plurality of lines is configured to both couple a bias voltage to a body of the slider, and provide a signal to the embedded contact sensor.

    MAGNETIC DISK DEVICE
    67.
    发明申请

    公开(公告)号:US20200302967A1

    公开(公告)日:2020-09-24

    申请号:US16567990

    申请日:2019-09-11

    发明人: Takao Furuhashi

    IPC分类号: G11B20/10 G11B5/012

    摘要: According to one embodiment, a magnetic disk device includes a magnetic disk section and a control section. The magnetic disk section includes a magnetic disk, a magnetic head, and a preamplifier. The control section included a processing section configured to cause the preamplifier to execute processing of generating the recording current used by a write head to write data to the magnetic disk, and processing of receiving an output reproduced from the magnetic disk by a read head, and configured to control the magnetic disk section. In the preamplifier, processing of reading data from the magnetic disk is executed by the read head in parallel with processing of writing data transferred from the control section to the magnetic disk by means of the write head.

    MAGNETIC DISK DEVICE
    68.
    发明申请

    公开(公告)号:US20200294543A1

    公开(公告)日:2020-09-17

    申请号:US16562980

    申请日:2019-09-06

    发明人: Yoshihiko Takeda

    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.

    Shared MAMR and HDI Sensor/Driver
    69.
    发明申请

    公开(公告)号:US20200286507A1

    公开(公告)日:2020-09-10

    申请号:US16292451

    申请日:2019-03-05

    发明人: Yan Wu

    摘要: A disk drive head assembly includes a spin torque oscillator (STO) situated between a main pole and a trailing shield. A head-disk interference (HDI) sensor is placed between the main pole and a read sensor shield. A trace is connected between a preamplifier and the head assembly for providing a first biasing voltage level to the spin torque oscillator (STO) and to the head-disk interference (HDI) sensor for determining resistance changes in the head-disk interference (HDI) sensor. Further, the preamplifier is configured for determining a resistance change in the head-disk interference (HDI) sensor based on a change in current through the head-disk interference (HDI) sensor. The spin torque oscillator (STO) and the head-disk interference (HDI) sensor are connected in parallel to two connectors from the two contacting pads on the preamplifier.

    MAGNETIC DISK DRIVE AND RECORDING METHOD FOR MAGNETIC DISK DRIVE

    公开(公告)号:US20200227074A1

    公开(公告)日:2020-07-16

    申请号:US16538027

    申请日:2019-08-12

    发明人: Hiroshi ISOKAWA

    IPC分类号: G11B5/09 G11B5/012

    摘要: According to one embodiment, there is provided a magnetic disk drive comprising a magnetic disk, a magnetic head configured to read/write data from/to the magnetic disk, a signal processing circuit configured to convert data to be recorded on the magnetic disk into a write signal, and to output the write signal to the magnetic head that generates a recording magnetic field corresponding to the write signal, and a recording control circuit configured to control the signal processing circuit and the magnetic head to record, in a target recording area of the magnetic disk, first data in the target recording area with a recording magnetic field having a first frequency, and to write, second data different from the first data over the first data with a recording magnetic field having a second frequency higher than the first frequency.