公开(公告)号：US20120300599A1

公开(公告)日：2012-11-29

申请号：US13117300

申请日：2011-05-27

申请人： John Contreras ,  Weldon Hanson ,  Barry C. Stipe ,  Rehan Zakai

发明人： John Contreras ,  Weldon Hanson ,  Barry C. Stipe ,  Rehan Zakai

IPC分类号： G11B11/00

CPC分类号： G11B5/02 ,  G11B20/1024 ,  G11B20/10351 ,  G11B2005/0021 ,  G11B2220/2516

摘要： A method and apparatus for generating a laser signal for driving a laser used in thermal-assisted recording. A channel of a hard drive generates a high-frequency component of the laser signal—e.g., a periodic wave or series of pulses—and synchronizes the phase of the laser signal with a corresponding write data signal which controls the magnetization of data bits within the magnetic disk of the hard drive. The channel may be connected to a read/write integrated circuit via a channel interconnect. The read/write circuit may include a second phase control to compensate for any phase shift and an adder circuit to combine the transmitted high-frequency laser with a DC bias. Further, the read/write circuit may include a feedback loop for adjusting the DC bias based on environmental parameters of the hard drive such as temperature.

摘要翻译： 一种用于产生用于驱动用于热辅助记录的激光的激光信号的方法和装置。 硬盘驱动器的通道产生激光信号的高频分量（例如，周期波或一系列脉冲），并将激光信号的相位与相应的写数据信号同步，该对应写数据信号控制激光信号内的数据位的磁化 硬盘的磁盘。 信道可以经由信道互连连接到读/写集成电路。 读/写电路可以包括用于补偿任何相移的第二相位控制和用于将发送的高频激光器与DC偏压组合的加法器电路。 此外，读/写电路可以包括用于基于诸如温度的硬盘驱动器的环境参数来调整DC偏置的反馈回路。

公开(公告)号：US20080100970A1

公开(公告)日：2008-05-01

申请号：US11554469

申请日：2006-10-30

申请人： Satoru Araki ,  John Contreras ,  Klaas Berend Klaassen ,  Ramona Marie Patterson ,  David John Seagle ,  Howard Gordon Zolla

发明人： Satoru Araki ,  John Contreras ,  Klaas Berend Klaassen ,  Ramona Marie Patterson ,  David John Seagle ,  Howard Gordon Zolla

IPC分类号： G11B5/33

CPC分类号： G11B5/1278

摘要： A current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) read head structure has the MR read head located between first and second shields (S1, S2) on a substrate with a shunt resistor R1 connecting S1 to the substrate and a shunt resistor R2 connecting S2 to the substrate, with R1 and R2 being approximately equal. Because R1 and R2 are close enough in value there is no significant interference pickup in the low frequency region. The shunt resistors can be formed from high-resistivity metal nitrides or cermets. The spacing between the substrate and S1 may be selected to make the capacitance between S1 and the substrate approximately equal to the capacitance between S2 and the substrate to substantially reduce interference pickup in the high frequency region. Equalization conductors (EC1, EC2) may be connected to the substrate and spaced from S2 and S1, respectively, by electrically insulating material to create additional capacitances with values selected to substantially equalize the total parasitic capacitance on S2 with the total parasitic capacitance on S1.

摘要翻译： 电流垂直于平面（CPP）磁阻（MR）读头结构具有位于衬底上的第一和第二屏蔽（S1，S2）之间的MR读取头，其中分流电阻器R 1连接S 1 并将R 2和R 2近似相等的分流电阻R 2与S 2连接。 由于R 1和R 2的值足够接近，所以在低频区域中没有显着的干扰拾取。 分流电阻可由高电阻金属氮化物或金属陶瓷形成。 可以选择衬底和S 1之间的间隔，以使S 1和衬底之间的电容大致等于S 2与衬底之间的电容，以显着降低高频区域中的干扰拾取。 均衡导体（EC 1，EC 2）可以分别连接到衬底，并且通过电绝缘材料分别与S 2和S 1隔开，以产生额外的电容，其值被选择为使S 2上的总寄生电容基本上相等于总共 S 1上的寄生电容。

公开(公告)号：US20060158785A1

公开(公告)日：2006-07-20

申请号：US11037906

申请日：2005-01-18

申请人： Satya Arya ,  John Contreras ,  Klaas Klaassen ,  Nobumasa Nishiyama

发明人： Satya Arya ,  John Contreras ,  Klaas Klaassen ,  Nobumasa Nishiyama

IPC分类号： G11B5/48

CPC分类号： H05K1/0224 ,  G11B5/486 ,  H05K1/0253 ,  H05K1/056 ,  H05K2201/09681

摘要： An electrical lead suspension (ELS) having partitioned air slots. The ELS includes a laminate. A first plurality of signal traces and a second plurality of traces are in a first formed layer of the laminate. The second plurality of traces may be signal traces or power traces. The laminate has a dielectric layer between the first formed layer and a second formed layer. A plurality of partitioned air slots is in the second formed layer of the laminate. The portion of the ELS having a plurality of partitioned air slots supporting the at least the first plurality of signal traces and the portion of the ELS having a second plurality of partitioned air slots or patterns supporting the second plurality of traces. The supporting of the first plurality of signal traces separate from the second plurality of traces reduces write-to-read cross talk and signal loss. Offsetting the first plurality of air slots from second plurality of air slots further reduces cross talk and signal loss and restores some of the structural rigidity lost due to in line (e.g., aligned) slots.

公开(公告)号：US08045297B2

公开(公告)日：2011-10-25

申请号：US12323329

申请日：2008-11-25

申请人： John Contreras ,  Luiz M. Franca-Neto ,  Jr-Yi Shen

发明人： John Contreras ,  Luiz M. Franca-Neto ,  Jr-Yi Shen

IPC分类号： G11B5/48 ,  H01B7/08

CPC分类号： G11B5/4846 ,  G11B5/486

摘要： A flex cable comprises a base film, a first adhesive layer coupled with the base film, and at least two signal traces coupled with the first adhesive layer. The flex cable comprises a second adhesive layer coupled with the signal traces and the first adhesive layer, and a cover film coupled with the second adhesive layer. The flex cable comprises an electrically conductive layer adjacent to the signal traces, and parallel with the base film and the cover film.

摘要翻译： 柔性电缆包括基膜，与基膜结合的第一粘合剂层和与第一粘合剂层耦合的至少两个信号迹线。 柔性电缆包括与信号迹线和第一粘合剂层耦合的第二粘合剂层和与第二粘合剂层结合的覆盖膜。 柔性电缆包括与信号迹线相邻的导电层，并且与基膜和覆盖膜平行。

公开(公告)号：US07830634B2

公开(公告)日：2010-11-09

申请号：US12343244

申请日：2008-12-23

申请人： Martin Yu-Wen Chen ,  John Contreras ,  Luiz M. Franca-Neto ,  Bernhard E. Knigge

发明人： Martin Yu-Wen Chen ,  John Contreras ,  Luiz M. Franca-Neto ,  Bernhard E. Knigge

IPC分类号： G11B5/60 ,  G11B27/36

CPC分类号： G11B27/36 ,  G11B5/6076 ,  G11B2220/2516

摘要： In a method of head-disk contact detection in a hard disk drive, a Radio Frequency (RF) carrier signal is injected into a slider which is flying above a surface of a disk in a hard disk drive. A modulated version of the RF carrier signal is received from the slider. The modulated version of the RF carrier signal is demodulated to achieve a demodulated signal. A signal spectrum of a range of frequencies in the demodulated signal is monitored for activity indicative of a contact between a head of the slider and the surface of the disk. An occurrence of the contact is determined based upon an occurrence of the activity.

摘要翻译： 在硬盘驱动器中的头盘接触检测的方法中，将射频（RF）载波信号注入到在硬盘驱动器中的盘表面上方飞行的滑块中。 从滑块接收RF载波信号的调制版本。 RF载波信号的调制版本被解调以实现解调信号。 监视解调信号中的频率范围的信号频谱，用于指示滑动头和盘的表面之间的接触的活动。 基于活动的发生来确定联系的发生。

公开(公告)号：USD626377S1

公开(公告)日：2010-11-02

申请号：US29340779

申请日：2009-07-24

申请人： Robert John Contreras ,  Richard Eugene Miller ,  Lloyd LeRoy Wall

设计人： Robert John Contreras ,  Richard Eugene Miller ,  Lloyd LeRoy Wall

公开(公告)号：US07667914B2

公开(公告)日：2010-02-23

申请号：US11405803

申请日：2006-04-17

申请人： John Contreras ,  Klaas Klaassen

发明人： John Contreras ,  Klaas Klaassen

IPC分类号： G11B5/03

CPC分类号： G11B5/02 ,  G11B2005/0018

摘要： Embodiments of the present invention provide a mixed-mode amplifier for amplifying signals in data storage devices such as disk drives. In one embodiments, a circuit for amplifying data signals comprises a magnetoresistive sensor having a bias voltage applied thereto; a signal amplifier which amplifies a signal detected by the magnetoresistive sensor having the bias voltage applied thereto; a feedback control block which is coupled to an output of the signal amplifier and outputs a feedback current used to vary a loop gain of the circuit; a bias setting circuit which outputs a bias setting current; and a transimpedance amplifier which receives the bias setting current from the bias setting block and the feedback current from the feedback control block and generates the bias voltage applied to the magnetoresistive sensor.

摘要翻译： 本发明的实施例提供一种用于放大诸如磁盘驱动器的数据存储装置中的信号的混合模式放大器。 在一个实施例中，用于放大数据信号的电路包括具有施加偏置电压的磁阻传感器; 信号放大器，其放大由具有施加到其上的偏置电压的磁阻传感器检测的信号; 反馈控制块，其耦合到所述信号放大器的输出并输出用于改变所述电路的环路增益的反馈电流; 偏置设定电路，输出偏置设定电流; 以及跨阻抗放大器，其从偏置设置块接收偏置设定电流和来自反馈控制块的反馈电流，并产生施加到磁阻传感器的偏置电压。

公开(公告)号：US20050174669A1

公开(公告)日：2005-08-11

申请号：US10777620

申请日：2004-02-11

申请人： John Contreras ,  Klaas Klaassen ,  Jacobus Van Peppen

发明人： John Contreras ,  Klaas Klaassen ,  Jacobus Van Peppen

IPC分类号： G11B5/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/09 ,  G11B20/10 ,  G11B20/22

CPC分类号： G11B5/012 ,  G11B20/10009 ,  G11B20/22 ,  G11B2005/0013 ,  G11B2005/0016

摘要： In one illustrative example disclosed, a magnetic storage device includes at least one magnetic disk; a magnetic head which includes first and second read sensors; a suspension which supports the magnetic head relative to the magnetic disk; and read circuitry which includes a preamplifier. The preamplifier has a first input port coupled to the first read sensor; a second input port coupled to the second read sensor; a first bias source coupled to the first input port for actively current/voltage biasing the first read sensor; a second bias source coupled to the second input port for zero biasing the second read sensor; and a subtractor having first and second inputs coupled to the first and the second input ports, respectively. The first input of the subtractor is provided with a first signal which includes a read sensor data signal and an interference signal, whereas the second input of the subtractor is provided with a second signal which includes the interference signal but not the read sensor data signal. Thus, an output of the subtractor provides a read sensor signal without the interference signal.

摘要翻译： 在所公开的一个说明性示例中，磁存储装置包括至少一个磁盘; 包括第一和第二读取传感器的磁头; 悬架，其相对于磁盘支撑磁头; 以及包括前置放大器的读取电路。 前置放大器具有耦合到第一读取传感器的第一输入端口; 耦合到所述第二读取传感器的第二输入端口; 耦合到所述第一输入端口的第一偏置源，用于主动地对所述第一读取传感器施加电流/电压; 耦合到第二输入端口的第二偏置源用于零偏压第二读取传感器; 以及减法器，其具有分别耦合到第一和第二输入端口的第一和第二输入。 减法器的第一输入提供有包括读取传感器数据信号和干扰信号的第一信号，而减法器的第二输入被提供有包括干扰信号而不是读取的传感器数据信号的第二信号。 因此，减法器的输出提供没有干扰信号的读取传感器信号。

公开(公告)号：US20130170331A1

公开(公告)日：2013-07-04

申请号：US13340147

申请日：2011-12-29

申请人： John Contreras ,  Lidu Huang ,  Erhard Schreck ,  Barry C. Stipe

发明人： John Contreras ,  Lidu Huang ,  Erhard Schreck ,  Barry C. Stipe

IPC分类号： G11B11/105 ,  G11B11/24 ,  G11B17/32

CPC分类号： G11B5/3133 ,  G11B5/314 ,  G11B5/607 ,  G11B2005/0021

摘要： An apparatus according to one embodiment includes a near-field transducer positioned towards an air bearing surface side of the apparatus; and at least one conductor or circuit for causing heating of the near-field transducer. A method according to one embodiment includes heating the near-field transducer by passing a current through the at least one conductor or circuit; and illuminating the near-field transducer during a write operation, wherein the current does not pass through the at least one conductor or circuit for at least a majority of a time of illumination. Additional embodiments are also presented.

摘要翻译： 根据一个实施例的装置包括朝向装置的空气轴承表面侧定位的近场换能器; 以及用于引起近场换能器加热的至少一个导体或电路。 根据一个实施例的方法包括通过使电流通过至少一个导体或电路来加热近场换能器; 以及在写入操作期间照亮所述近场换能器，其中所述电流在所述照明时间的至少大部分时间内不通过所述至少一个导体或电路。 还提供了另外的实施例。

公开(公告)号：US08049984B2

公开(公告)日：2011-11-01

申请号：US12328483

申请日：2008-12-04

申请人： John Contreras ,  Luiz Franca-Neto ,  Bernhard Knigge

发明人： John Contreras ,  Luiz Franca-Neto ,  Bernhard Knigge

IPC分类号： G11B5/03 ,  G11B5/48 ,  G11B21/16

CPC分类号： G11B5/6011 ,  G11B5/6017

摘要： In a method of biasing a slider, a bias voltage is generated for biasing a slider. The bias voltage is integratedly coupled to a conductive body of the slider via an existing signal path of the slider such that the slider is biased with the bias voltage. The existing signal path is primarily used for conveying another signal to or from the slider but at least sometimes conveys the bias voltage to the conductive body in an integral fashion along with another signal.

摘要翻译： 在偏置滑块的方法中，产生用于偏置滑块的偏置电压。 偏置电压经由滑块的现有信号路径一体地耦合到滑块的导电体，使得滑块以偏置电压偏置。 现有信号路径主要用于向滑块传送另一信号或从滑块传送另一信号，但是至少有时将偏置电压与另一个信号一起以整体方式传送到导电体。