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1.发明授权公开(公告)号：US11961542B2
公开(公告)日：2024-04-16
申请号：US17883976
申请日：2022-08-09
发明人： John Contreras , Joey M. Poss , Ronald Chang , Bernhard E. Knigge
CPC分类号： G11B5/6076 , G11B5/6011 , G11B27/36 , G01K7/24
摘要： Various illustrative aspects are directed to a data storage device comprising a slider with a resistive temperature detector with a first resistance, a resistance detection circuit electrically coupled to the first resistance and comprising a low and high frequency path corresponding to a DC and AC mode, respectively, and one or more processing devices configured to: bias the first resistance with a voltage bias, where the first resistance is coupled to a first and second amplifier, control a pulse generator to add a bias pulse on the HF path to generate a HF resistance detection signal, where the second amplifier is biased using the voltage bias and the bias pulse, control a clock to chop a LF signal at the first amplifier on the LF path, demodulate the chopped LF signal to generate a LF resistance detection signal, and concurrently process the HF and LF resistance detection signals.
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公开(公告)号：US20210327462A1
公开(公告)日：2021-10-21
申请号：US17361496
申请日：2021-06-29
摘要： Disclosed herein is a data storage device comprising a slider comprising 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 (a) couple a slider bias voltage to a body of the slider to control a potential of the slider, and (b) provide a signal to the embedded contact sensor. The slider may also include a shunt circuit for mitigating radio-frequency interference by shunting it to ground. The slider may include a write element, which may include a write-field enhancement structure. The slider may include a read element for reading from a recording media.
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公开(公告)号：US10891973B2
公开(公告)日：2021-01-12
申请号：US16816211
申请日：2020-03-11
摘要： Disclosed herein are circuits, architectures, and methods that provide for the control of a data storage device write head's trailing shield and main pole potential with respect to the disk using circuitry that is integrated with circuitry used to bias a spin torque oscillator (STO) apparatus. Various embodiments include slider connections with STO bias circuitry that resides in a read/write integrated circuit, which has a programmable circuit that generates a bias current with overshoot (bias kicks). Also disclosed are circuits that may be incorporated into a slider to mitigate radio-frequency interference.
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公开(公告)号：US10283150B2
公开(公告)日：2019-05-07
申请号：US15667585
申请日：2017-08-02
发明人： John Contreras , Rehan Zakai , Albert Wallash , Tzong-Shii Pan
摘要： Disclosed herein are suspension assembly structures for data storage devices that include physical or virtual crossovers of the pairs of differential signal traces to improve immunity to crosstalk and other interference. In an embodiment, the suspension assembly structure comprises a first trace for carrying a first component of a current to a differential transducer on a slider, a second trace for carrying a second component of the current to the differential transducer on the slider, and third and fourth traces for providing a differential write current to a writer of the data storage device, wherein the first trace physically crosses over the second trace at a first distance from a tail of the suspension assembly structure.
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公开(公告)号：US20240040688A1
公开(公告)日：2024-02-01
申请号：US18379587
申请日：2023-10-12
IPC分类号： H05K1/02
CPC分类号： H05K1/0228 , H05K1/028 , H05K1/0298 , H05K2201/10159
摘要： A flexible printed circuit (FPC) for a hard disk drive includes a plurality of electrical traces, whereby aggressor traces are isolated from victim traces to avoid crosstalk that could degrade signals. Aggressor traces may be positioned together at one of the edges of each of the top wiring layer and the bottom wiring layer, physically isolated from victim traces. Aggressor traces may be grouped together at either the top wiring layer or the bottom wiring layer, with the victim traces positioned on the layer opposing the aggressor traces. With aggressor and victim traces routed on the same wiring layer, aggressor traces may be routed away from the victim traces with multi-layer routing, by way of vias.
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6.发明公开公开(公告)号：US20240005957A1
公开(公告)日：2024-01-04
申请号：US17883976
申请日：2022-08-09
发明人： John Contreras , Joey M. Poss , Ronald Chang , Bernhard E. Knigge
CPC分类号： G11B5/4826 , G01K7/24
摘要： Various illustrative aspects are directed to a data storage device comprising a slider with a resistive temperature detector with a first resistance, a resistance detection circuit electrically coupled to the first resistance and comprising a low and high frequency path corresponding to a DC and AC mode, respectively, and one or more processing devices configured to: bias the first resistance with a voltage bias, where the first resistance is coupled to a first and second amplifier, control a pulse generator to add a bias pulse on the HF path to generate a HF resistance detection signal, where the second amplifier is biased using the voltage bias and the bias pulse, control a clock to chop a LF signal at the first amplifier on the LF path, demodulate the chopped LF signal to generate a LF resistance detection signal, and concurrently process the HF and LF resistance detection signals.
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公开(公告)号：US11818834B2
公开(公告)日：2023-11-14
申请号：US17356155
申请日：2021-06-23
IPC分类号： H05K1/02
CPC分类号： H05K1/0228 , H05K1/028 , H05K1/0298 , H05K2201/10159
摘要： A flexible printed circuit (FPC) for a hard disk drive includes a plurality of electrical traces, whereby aggressor traces are isolated from victim traces to avoid crosstalk that could degrade signals. Aggressor traces may be positioned together at one of the edges of each of the top wiring layer and the bottom wiring layer, physically isolated from victim traces. Aggressor traces may be grouped together at either the top wiring layer or the bottom wiring layer, with the victim traces positioned on the layer opposing the aggressor traces. With aggressor and victim traces routed on the same wiring layer, aggressor traces may be routed away from the victim traces with multi-layer routing, by way of vias.
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公开(公告)号：US20220418092A1
公开(公告)日：2022-12-29
申请号：US17356155
申请日：2021-06-23
IPC分类号： H05K1/02
摘要： A flexible printed circuit (FPC) for a hard disk drive includes a plurality of electrical traces, whereby aggressor traces are isolated from victim traces to avoid crosstalk that could degrade signals. Aggressor traces may be positioned together at one of the edges of each of the top wiring layer and the bottom wiring layer, physically isolated from victim traces. Aggressor traces may be grouped together at either the top wiring layer or the bottom wiring layer, with the victim traces positioned on the layer opposing the aggressor traces. With aggressor and victim traces routed on the same wiring layer, aggressor traces may be routed away from the victim traces with multi-layer routing, by way of vias.
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公开(公告)号：US11087784B2
公开(公告)日：2021-08-10
申请号：US16833942
申请日：2020-03-30
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.
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公开(公告)号：US10244618B2
公开(公告)日：2019-03-26
申请号：US15631336
申请日：2017-06-23
发明人： Albert Wallash , John Contreras , Satoshi Nakamura , Hui He
IPC分类号： H05K1/02 , H01P7/06 , G11B33/14 , H05K1/11 , H05K1/03 , G11B25/04 , H01P1/201 , H01P1/203 , H01P3/02 , G11B33/12
摘要： Disclosed herein are printed circuit boards (PCBs) with patterned ground structure filters and data storage devices comprising such PCBs. Each PCB comprises a resonator having an L-shape or a zig-zag shape in a plane of the printed circuit board and at least one signal trace. The resonator has a first dimension and a second dimension in the plane of the printed circuit board. A portion of the at least one signal trace is situated over the resonator and is separated by a distance from the resonator by a dielectric material. In some embodiments, at least part of the portion of the at least one signal trace extends in a same direction as the first dimension (in the case of an L-shaped resonator) or tracks the zig-zag shape of the resonator (in the case of a zig-zag-shaped resonator).
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