公开(公告)号：US06349009B1

公开(公告)日：2002-02-19

申请号：US09326069

申请日：1999-06-04

申请人： Housan Dakroub ,  Hieu V. Nguyen

发明人： Housan Dakroub ,  Hieu V. Nguyen

IPC分类号： G11B502

CPC分类号： G11B5/5521 ,  G11B5/012 ,  G11B5/02 ,  G11B5/035 ,  G11B5/4826 ,  G11B5/486 ,  G11B2005/0013

摘要： Apparatus for improving data writing operations to a disc recording surface of a disc drive. A head assembly is supported over the disc recording surface by a flexible suspension assembly of a controllably positionable actuator assembly and includes a write current shaping circuit integrated with a write element. The write current shaping circuit modifies write currents received by the head assembly via a transmission line from a preamplifier driver circuit to remove undesired characteristics from the received write currents. The write element writes data to the disc recording surface using the write currents as modified by the write current shaping circuit.

摘要翻译： 用于改善对盘驱动器的盘记录表面的数据写入操作的装置。 头组件通过可控制的致动器组件的柔性悬挂组件支撑在盘记录表面上，并且包括与写入元件集成的写入电流整形电路。 写入电流整形电路通过来自前置放大器驱动器电路的传输线修改由头部组件接收的写入电流，以从接收的写入电流去除不期望的特性。 写元件使用由写入电流整形电路修改的写入电流将数据写入盘记录表面。

公开(公告)号：US09130596B2

公开(公告)日：2015-09-08

申请号：US13172457

申请日：2011-06-29

申请人： Ara Patapoutian ,  Hieu V. Nguyen ,  Prafulla Bollampalli Reddy

发明人： Ara Patapoutian ,  Hieu V. Nguyen ,  Prafulla Bollampalli Reddy

IPC分类号： H03M13/29 ,  H03M13/00 ,  H03M13/09 ,  H03M13/11 ,  H03M13/15

CPC分类号： H04L1/0045 ,  G06F11/1072 ,  G11C29/52 ,  H03M13/09 ,  H03M13/1102 ,  H03M13/1515 ,  H03M13/2906 ,  H03M13/6516 ,  H03M13/6561

摘要： Presented is a data channel with selectable components, such as encoders or decoders. Also, data having different data signal characteristics can be processed through a data channel based on the data signal characteristics. Further, a data channel may have independent encoding path and an independent decoding path. For example, a first data transmission having first data signal characteristics may be processed via a data channel based on a first selected set of components of the data channel and a second data transmission having second data signal characteristics different than the first data signal characteristics may be processed via the data channel using a second selected set of components in the data channel. The first selected set of components may be different than the second selected set of components, but may share one or more common components.

摘要翻译： 提出了具有可选组件的数据通道，例如编码器或解码器。 此外，可以基于数据信号特性通过数据信道来处理具有不同数据信号特性的数据。 此外，数据信道可以具有独立的编码路径和独立的解码路径。 例如，具有第一数据信号特性的第一数据传输可以经由数据信道基于数据信道的第一选定组件集合进行处理，并且具有与第一数据信号特性不同的第二数据信号特性的第二数据传输可以是 通过数据信道使用数据信道中的第二组选择的组来处理。 第一选择的组件集合可以不同于第二选择的组件集合，但是可以共享一个或多个公共组件。

公开(公告)号：US20100288591A1

公开(公告)日：2010-11-18

申请号：US12464230

申请日：2009-05-12

申请人： Jason V. Drew ,  Hieu V. Nguyen

发明人： Jason V. Drew ,  Hieu V. Nguyen

IPC分类号： A45C3/02 ,  A45C13/10

CPC分类号： A45C3/02 ,  A45C7/0086 ,  A45C7/0095 ,  A45C13/1046 ,  A45C2011/003 ,  Y10T24/37 ,  Y10T29/49824

摘要： A carrying case includes a first compartment and a second compartment coupled to each other at attached ends by a hinge and detachably coupled to each other at free ends by at least one fastener. The at least one fastener includes a clip coupled to the first compartment and a cord coupled to the second compartment. The clip is configured to receive the cord to secure the free ends of the first compartment and the second compartment together.

摘要翻译： 携带箱包括第一隔室和第二隔室，第二隔室通过铰链在连接的端部处彼此连接，并且在自由端处由至少一个紧固件彼此可拆卸地联接。 所述至少一个紧固件包括联接到所述第一隔室的夹子和连接到所述第二隔室的绳索。 夹子被配置为接收绳索以将第一隔室和第二隔室的自由端固定在一起。

公开(公告)号：US06483658B1

公开(公告)日：2002-11-19

申请号：US08576397

申请日：1995-12-21

申请人： Hieu V. Nguyen

发明人： Hieu V. Nguyen

IPC分类号： G11B558

CPC分类号： G11B5/5552

摘要： A method of measuring the read-to-write offset of a track in a disc drive system having separate read and write elements by measuring read error rate as a function of incremental actuator offset. The actuator is incrementally moved from one edge of the track to the other. The two radial positions which produce read error rates within acceptable limits are identified, and the read-to-write offset is determined by subtracting the offset at which the track was written, from the midpoint of the two radial positions. The read-to-write offset for each track accessed by the transducer is calculated from the read-to-write offset measured at the track.

摘要翻译： 通过测量作为增量致动器偏移的函数的读取错误率来测量具有分离的读取和写入元件的盘驱动器系统中的轨道的读/写偏移量的方法。 致动器从轨道的一个边缘递增地移动到另一个边缘。 识别产生读取错误率在可接受限度内的两个径向位置，并且从两个径向位置的中点减去写入轨迹的偏移量来确定读/写偏移量。 由传感器访问的每个磁道的读写偏移量由磁道上测量的读写偏移量计算。

公开(公告)号：US06342986B2

公开(公告)日：2002-01-29

申请号：US09732975

申请日：2000-12-08

申请人： Hieu V. Nguyen

发明人： Hieu V. Nguyen

IPC分类号： G11B2102

CPC分类号： G11B5/59683 ,  G11B5/012 ,  G11B2005/0018

摘要： Apparatus and method for servo writing with simultaneous biasing of multiple magneto-resistive read elements in a disc drive head/disc assembly. A preamplifier circuit sequentially applies read bias currents to successive pairs of heads of the head/disc assembly, wherein the read bias current applied to a selected one of each pair of the heads is used to transduce the servo data from the associated disc recording surface, and the read bias current applied to the remaining one of each pair of the heads is used to prepare the remaining one of each pair of the heads to subsequently transduce the servo data from the associated disc recording surface. The preamplifier circuit includes at least first and second read bias current sources and a head selection circuit.

摘要翻译： 用于在盘驱动头/盘组件中同时偏置多个磁阻读取元件的伺服写入的装置和方法。 前置放大器电路依次对读/写头偏置电流施加到头/盘组件的连续对的头部，其中施加到每对头中的选定一个头的读取偏置电流被用于从相关盘记录表面转换伺服数据， 并且使用施加到每对头部中的其余一个头部的读取偏置电流来准备每对头部中的剩余的一个，以随后从相关联的盘记录表面转换伺服数据。 前置放大器电路至少包括第一和第二读取偏置电流源和磁头选择电路。