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    System and method for off-track write prevention and data recovery in multiple head optical tape drives
    1.
    发明授权
    System and method for off-track write prevention and data recovery in multiple head optical tape drives 有权
    用于多头磁带驱动器中的非磁道写入防止和数据恢复的系统和方法

    公开(公告)号：US08811131B2

    公开(公告)日：2014-08-19

    申请号：US14050884

    申请日：2013-10-10

    Applicant: Oracle International Corporation

    Inventor： Faramarz Mahnad

    IPC: G11B7/00

    CPC classification number: G11B21/103 ,  G11B7/003 ,  G11B7/14

    Abstract: In an optical tape drive having optical heads for writing data in tracks on an optical tape, each track having an off-track threshold, a system and method are disclosed for off-track write prevention. The system includes multiple actuators, each actuator configured to control a position of an associated optical heads. The system also includes a controller configured to determine a position of each of the optical heads relative to an associated track on the optical tape and to prevent, in response to an event causing an optical heads to have a position outside the off-track threshold of the associated track, only that optical head from writing data to the optical tape and to buffer a stream of data for that optical head for later processing.

    Abstract translation: 在具有用于在光带上的磁道中写入数据的光学头的光学磁带驱动器中，每个磁道具有偏离磁道阈值，系统和方法被公开用于非磁道写入预防。 该系统包括多个致动器，每个致动器被配置为控制相关联的光学头的位置。 该系统还包括控制器，该控制器被配置为确定每个光头相对于光带上的相关轨道的位置，并且响应于导致光头位于偏离轨道阈值以外的位置的事件 相关联的轨道，只有该光头从写入数据到光带并且缓冲该光头的数据流以供稍后处理。

    System and Method for Off-Track Write Prevention and Data Recovery in Multiple Head Optical Tape Drives
    2.
    发明申请
    System and Method for Off-Track Write Prevention and Data Recovery in Multiple Head Optical Tape Drives 有权
    多磁头磁带驱动器中的非磁道写入预防和数据恢复的系统和方法

    公开(公告)号：US20140036649A1

    公开(公告)日：2014-02-06

    申请号：US14050884

    申请日：2013-10-10

    Applicant: Oracle International Corporation

    Inventor： Faramarz Mahnad

    IPC: G11B21/10

    CPC classification number: G11B21/103 ,  G11B7/003 ,  G11B7/14

    Abstract: In an optical tape drive having optical heads for writing data in tracks on an optical tape, each track having an off-track threshold, a system and method are disclosed for off-track write prevention. The system includes multiple actuators, each actuator configured to control a position of an associated optical heads. The system also includes a controller configured to determine a position of each of the optical heads relative to an associated track on the optical tape and to prevent, in response to an event causing an optical heads to have a position outside the off-track threshold of the associated track, only that optical head from writing data to the optical tape and to buffer a stream of data for that optical head for later processing.

    Abstract translation: 在具有用于在光带上的磁道中写入数据的光学头的光学磁带驱动器中，每个磁道具有偏离磁道阈值，系统和方法被公开用于非磁道写入预防。 该系统包括多个致动器，每个致动器被配置为控制相关联的光学头的位置。 该系统还包括控制器，该控制器被配置为确定每个光头相对于光带上的相关轨道的位置，并且响应于导致光头位于偏离轨道阈值以外的位置的事件 相关联的轨道，只有该光头从写入数据到光带并且缓冲该光头的数据流以供稍后处理。

    Optical media servo tracking
    3.
    发明授权
    Optical media servo tracking 有权
    光盘伺服跟踪

    公开(公告)号：US08593921B1

    公开(公告)日：2013-11-26

    申请号：US13731384

    申请日：2012-12-31

    Applicant: Oracle International Corporation

    Inventor： Faramarz Mahnad

    IPC: G11B7/00

    CPC classification number: G11B7/0901 ,  G11B7/003 ,  G11B7/0906

    Abstract: An optical media storage system includes an optical pickup that unit that reads data marks from a track of optical media, detects a relative position between the optical pickup unit and the data marks, and detects a relative position between the optical pickup unit and the track. The storage system further includes an actuator and a controller that commands the actuator to position the optical pickup unit based on both of the detected relative positions.

    Abstract translation: 光学媒体存储系统包括从光学介质的轨道读取数据标记的光学拾取单元，检测光学拾取单元和数据标记之间的相对位置，并且检测光学拾取单元和轨道之间的相对位置。 存储系统还包括致动器和控制器，其指令致动器基于检测到的相对位置两者来定位光学拾取单元。

    Optical tape embosser drum with shim identification
    4.
    发明授权
    Optical tape embosser drum with shim identification 有权

    公开(公告)号：US10350792B2

    公开(公告)日：2019-07-16

    申请号：US16023372

    申请日：2018-06-29

    Applicant: Oracle International Corporation

    Inventor： Faramarz Mahnad

    IPC: B29C33/38 ,  B29C33/42 ,  B29C43/46 ,  B29C59/04 ,  G11B7/26 ,  B44B5/00 ,  C25D7/00 ,  B29D17/00 ,  G11B7/24009

    Abstract: A method is provided for making stamper plates for an embossing drum for embossing tape media. At least one first stamper plate is formed using a master template. The at least one first stamper plate includes first land and groove patterns that are an inverse of the master template land and groove patterns. At least one second stamper plate is formed from the at least one first stamper plate. The at least one second stamper plate includes second land and groove patterns that are an inverse of the first land and groove patterns. Furthermore, the first stamper plates and the second stamper plates have four sections arranged in a travel direction of the tape media, a first and a fourth of the four sections having land and groove patterns that are laterally mirrored with respect to each other. A first stamper plate is coupled to a second stamper plate to form part of the drum for embossing tape media.

    Quadrature track error signal for optical recording media and devices
    5.
    发明授权
    Quadrature track error signal for optical recording media and devices 有权

    公开(公告)号：US10079037B2

    公开(公告)日：2018-09-18

    申请号：US15600624

    申请日：2017-05-19

    Applicant: Oracle International Corporation

    Inventor： Faramarz Mahnad

    IPC: G11B7/085 ,  G11B7/095 ,  G11B7/005

    CPC classification number: G11B7/08505 ,  G11B7/0053 ,  G11B7/095

    Abstract: A method for providing tracking error signals in an optical data storage system includes a step of receiving a wobble signal having a first frequency from the wobble detection system. The wobble detection system includes an optical pick up unit that detects positions of the head relative to lands and grooves. Characteristically, the wobble signal is amplitude modulated for positions intermediate between the land and the groove. The method further includes a step of receiving a primary tracking error signal from the wobble detection system. The wobble signal is multiplied with a synchronous signal to about a product signal. The product signal is positive for a first direction of motion and negative for a second direction of motion that is opposite that of the first direction. The product signal is integrated to obtain a quadrature track error signal.

    Methods for Manufacturing an Embosser Drum for Use In Pre-Formatting Optical Tape Media
    8.
    发明申请
    Methods for Manufacturing an Embosser Drum for Use In Pre-Formatting Optical Tape Media 有权
    制造用于预格式化光学胶带介质的压花鼓的方法

    公开(公告)号：US20160001511A1

    公开(公告)日：2016-01-07

    申请号：US14851110

    申请日：2015-09-11

    Applicant: Oracle International Corporation

    Inventor： Faramarz Mahnad ,  Joseph J. Kozak

    IPC: B29D11/00

    CPC classification number: B29D11/00788 ,  B29C33/424 ,  B29C59/04 ,  B29C59/046 ,  B29C2059/023 ,  B29D17/005 ,  B29K2101/00 ,  B29K2905/00 ,  G11B7/24009 ,  G11B7/263

    Abstract: Various embodiments herein include utilities for generating embosser drums that are used to pre-format optical media such as optical tape with a pattern of nanostructures such as wobbled grooves. One utility includes generating a plurality of replicas from an embossing master, bonding the replicas together to form a bonded replica structure having a surface with the nanostructure pattern imprinted therein, creating a replica of the bonded replica structure and electroforming a metallic layer onto the bonded replica structure replica to create a single, one piece, metallic shim which can be used to create a weld-less embosser drum.

    Abstract translation: 本文中的各种实施例包括用于产生用于预先格式化光学介质（例如具有诸如摆动凹槽的纳米结构的图案的光学带）的打浆鼓的实用程序。 一个实用程序包括从压印母版产生多个复制品，将复制品粘合在一起以形成具有其中印有纳米结构图案的表面的粘合复制结构，产生粘合复制结构的复制品，并将金属层电铸在粘合复制品上 结构复制品，以创建一个单件，一件，金属垫片，可用于创建无焊缝卷筒。

    QUADRATURE TRACK ERROR SIGNAL FOR OPTICAL RECORDING MEDIA AND DEVICES
    10.
    发明申请
    QUADRATURE TRACK ERROR SIGNAL FOR OPTICAL RECORDING MEDIA AND DEVICES 审中-公开

    公开(公告)号：US20170256279A1

    公开(公告)日：2017-09-07

    申请号：US15600624

    申请日：2017-05-19

    Applicant: Oracle International Corporation

    Inventor： Faramarz Mahnad

    IPC: G11B7/085

    CPC classification number: G11B7/08505 ,  G11B7/0053 ,  G11B7/095

    Abstract: A method for providing tracking error signals in an optical data storage system includes a step of receiving a wobble signal having a first frequency from the wobble detection system. The wobble detection system includes an optical pick up unit that detects positions of the head relative to lands and grooves. Characteristically, the wobble signal is amplitude modulated for positions intermediate between the land and the groove. The method further includes a step of receiving a primary tracking error signal from the wobble detection system. The wobble signal is multiplied with a synchronous signal to about a product signal. The product signal is positive for a first direction of motion and negative for a second direction of motion that is opposite that of the first direction. The product signal is integrated to obtain a quadrature track error signal.

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