公开(公告)号：US20160267938A1

公开(公告)日：2016-09-15

申请号：US15067636

申请日：2016-03-11

Applicant: Texas Instruments Incorporated

Inventor： Rida S. Assaad ,  William M. Torres Escajadillo ,  Mark A. Wolfe

IPC: G11B20/18 ,  G11B5/09

CPC classification number: G11B20/18 ,  G11B5/012 ,  G11B5/09 ,  G11B20/10018 ,  G11B20/182 ,  G11B2220/2516

Abstract: A system and method for Flex Over or On Suspension (FOS) fault detection under a write gate for magnetic disk drives may employ a flex over suspension fault comparator that compares a predetermined reference threshold to a positive delta of a disk drive write head data stream and outputs a positive or negative FOS fault indication. A max/min buffer detects polarity of a disk drive read/write head and applies a positive buffered delta to the fault comparator. A transition-free window detector triggers the fault comparator to output the fault indication when a transition-free window of zero-value data bits of a predetermined length is detected from the disk drive head, and the transition-free window detector provides a fault validation signal to validate output of the fault comparator when the transition-free window of zero-value data bits of the predetermined length is detected from the disk drive head.

Abstract translation: 用于磁盘驱动器的写入口下的用于Flex Over或On Suspension（FOS）故障检测的系统和方法可以采用将预定参考阈值与磁盘驱动器写入头数据流的正增量进行比较的弯曲过载故障比较器， 输出正或负FOS故障指示。 最大/最小缓冲区检测磁盘驱动器读/写头的极性，并向故障比较器应用正缓冲增量。 当从磁盘驱动器头检测到预定长度的零值数据位的无转换窗口时，无转换窗口检测器触发故障比较器输出故障指示，并且无转换窗口检测器提供故障验证 当从磁盘驱动器头检测到预定长度的零值数据位的无转换窗口时，用于确认故障比较器的输出的信号。

公开(公告)号：US08508876B2

公开(公告)日：2013-08-13

申请号：US13712363

申请日：2012-12-12

Applicant: Texas Instruments Incorporated

Inventor： Arup Polley ,  Rajarshi Mukhopadhyay ,  Reza Sharifi ,  Mark A. Wolfe

IPC: G11B20/10

CPC classification number: G11B21/21 ,  G11B5/6029 ,  G11B5/6076

Abstract: A data storage system for detecting a location of a head relative to a magnetic media is described. This system comprises arms, a preamplifier circuit coupled to the arms for controlling the arms, a proximity sensing system positioned within the preamplifier circuit, the proximity sensing system comprising: an input stage for transmitting an input sense signal; a programmable gain stage coupled to receive the input sense signal and operative for transmitting a gain signal in response to receiving the input sense signal; a multiplexer coupled to receive the gain signal and at least one control signal, the multiplexer operative for transmitting a multiplexed signal; a detector coupled to receive the multiplexed signal and a second control signal, the detector operative for transmitting an output signal; wherein an amplitude associated with the output signal enables detecting the location of the head.

Abstract translation: 描述了一种用于检测头相对于磁性介质的位置的数据存储系统。 该系统包括臂，耦合到用于控制臂的臂的前置放大器电路，位于前置放大器电路内的接近感测系统，所述接近感测系统包括：用于传输输入感测信号的输入级; 可编程增益级，其被耦合以接收所述输入检测信号并且用于响应于接收所述输入检测信号而发送增益信号; 多路复用器，其耦合以接收增益信号和至少一个控制信号，多路复用器用于发送多路复用信号; 耦合以接收所述多路复用信号的检测器和第二控制信号，所述检测器用于发送输出信号; 其中与输出信号相关联的振幅使得能够检测头部的位置。

公开(公告)号：US20130176639A1

公开(公告)日：2013-07-11

申请号：US13712363

申请日：2012-12-12

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Arup Polley ,  Rajarshi Mukhopadhyay ,  Reza Sharifi ,  Mark A. Wolfe

IPC: G11B21/21

CPC classification number: G11B21/21 ,  G11B5/6029 ,  G11B5/6076

Abstract: A data storage system for detecting a location of a head relative to a magnetic media is described. This system comprises arms, a preamplifier circuit coupled to the arms for controlling the arms, a proximity sensing system positioned within the preamplifier circuit, the proximity sensing system comprising: an input stage for transmitting an input sense signal; a programmable gain stage coupled to receive the input sense signal and operative for transmitting a gain signal in response to receiving the input sense signal; a multiplexer coupled to receive the gain signal and at least one control signal, the multiplexer operative for transmitting a multiplexed signal; a detector coupled to receive the multiplexed signal and a second control signal, the detector operative for transmitting an output signal; wherein an amplitude associated with the output signal enables detecting the location of the head.

Abstract translation: 描述了一种用于检测头相对于磁性介质的位置的数据存储系统。 该系统包括臂，耦合到用于控制臂的臂的前置放大器电路，位于前置放大器电路内的接近感测系统，所述接近感测系统包括：用于传输输入感测信号的输入级; 可编程增益级，其被耦合以接收所述输入检测信号并且用于响应于接收所述输入检测信号而发送增益信号; 多路复用器，其耦合以接收增益信号和至少一个控制信号，多路复用器用于发送多路复用信号; 耦合以接收所述多路复用信号的检测器和第二控制信号，所述检测器用于发送输出信号; 其中与输出信号相关联的振幅使得能够检测头部的位置。

公开(公告)号：US20240178825A1

公开(公告)日：2024-05-30

申请号：US18462733

申请日：2023-09-07

Applicant: Texas Instruments Incorporated

Inventor： Mark A. Wolfe ,  Harsh D. Jhaveri

IPC: H03K5/14 ,  H03K5/1252 ,  H03K19/003

CPC classification number: H03K5/14 ,  H03K5/1252 ,  H03K19/00346

Abstract: A circuit including a device including a receiver having a receiver input, a receiver output, and a bias current input and a bias generator having a bias current output coupled to the bias current input. The device also includes a buffer having a buffer input, an enable input, and a buffer output, the buffer input coupled to the receiver output and a delay circuit having a delay output coupled to the enable input.

公开(公告)号：US09564170B2

公开(公告)日：2017-02-07

申请号：US15067636

申请日：2016-03-11

Applicant: Texas Instruments Incorporated

Inventor： Rida S. Assaad ,  William M. Torres Escajadillo ,  Mark A. Wolfe

IPC: G11B5/09 ,  G11B20/18

CPC classification number: G11B20/18 ,  G11B5/012 ,  G11B5/09 ,  G11B20/10018 ,  G11B20/182 ,  G11B2220/2516

Abstract: A system and method for Flex Over or On Suspension (FOS) fault detection under a write gate for magnetic disk drives may employ a flex over suspension fault comparator that compares a predetermined reference threshold to a positive delta of a disk drive write head data stream and outputs a positive or negative FOS fault indication. A max/min buffer detects polarity of a disk drive read/write head and applies a positive buffered delta to the fault comparator. A transition-free window detector triggers the fault comparator to output the fault indication when a transition-free window of zero-value data bits of a predetermined length is detected from the disk drive head, and the transition-free window detector provides a fault validation signal to validate output of the fault comparator when the transition-free window of zero-value data bits of the predetermined length is detected from the disk drive head.

Abstract translation: 用于磁盘驱动器的写入口下的用于Flex Over或On Suspension（FOS）故障检测的系统和方法可以采用将预定参考阈值与磁盘驱动器写入头数据流的正增量进行比较的弯曲过载故障比较器， 输出正或负FOS故障指示。 最大/最小缓冲区检测磁盘驱动器读/写头的极性，并向故障比较器应用正缓冲增量。 当从磁盘驱动器头检测到预定长度的零值数据位的无转换窗口时，无转换窗口检测器触发故障比较器输出故障指示，并且无转换窗口检测器提供故障验证 当从磁盘驱动器头检测到预定长度的零值数据位的无转换窗口时，用于确认故障比较器的输出的信号。