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    • 3. 发明授权
    • Systems and methods for testing unformatted optical recording media
    • 用于测试未格式化光学记录介质的系统和方法
    • US08077566B2
    • 2011-12-13
    • US12750366
    • 2010-03-30
    • Faramarz Mahnad
    • Faramarz Mahnad
    • G11B20/10
    • G11B20/1816G11B7/268G11B2220/2537
    • Various embodiments herein include one or more of systems, methods, software, and/or data structures to test and evaluate unformatted optical media such as optical tape and optical discs. Advantageously, testing and evaluation can be performed earlier in the manufacturing process of the optical media to locate defects and/or other problems or issues with the optical media that can be addressed before additional manufacturing steps are performed and possible wasted. The systems and methods include at least two optical pickup units (OPUs), a first of which may be dedicated to writing digital data and the second of which may be dedicated to scanning, locating, tracking and/or reading the written data (when the optical media is moving in a first direction) in one of a plurality of manners. Information (e.g., optical signals such as sum, differential push pull and focus error signals) associated with the writing, scanning and retrieving of data at one or more locations or segments of the optical media may be used part of an analysis of one or more properties (e.g., signal to noise, signal jitter, thickness, roughness) of the optical media.
    • 本文的各种实施例包括用于测试和评估诸如光学带和光盘之类的无格式的光学介质的系统,方法,软件和/或数据结构中的一个或多个。 有利地,可以在光学介质的制造过程中更早地执行测试和评估,以定位在执行额外的制造步骤和可能浪费之前可以解决的光学介质的缺陷和/或其他问题或问题。 系统和方法包括至少两个光学拾取单元(OPU),其中第一个可以专用于写入数字数据,其中第二个可以专用于扫描,定位,跟踪和/或读取写入的数据(当 光学介质以第一方向移动)以多种方式之一。 可以使用与光学介质的一个或多个位置或段处的数据的写入,扫描和检索相关联的信息(例如和信号,差分推挽和聚焦误差信号),其中一个或多个 光学介质的性质(例如,信号与噪声,信号抖动,厚度,粗糙度)。
    • 6. 发明授权
    • Servo methods and systems using existing data structures and optical masks
    • 使用现有数据结构和光学掩模的伺服方法和系统
    • US07139152B2
    • 2006-11-21
    • US10929039
    • 2004-08-27
    • Faramarz MahnadGeorge A. SalibaLeo CappabiancaMitchell R. Steinberg
    • Faramarz MahnadGeorge A. SalibaLeo CappabiancaMitchell R. Steinberg
    • G11B5/584
    • G11B5/584
    • In one example, a method is provided for detecting the relative position of a transducer head with respect to a storage medium utilizing existing or previously written data structures on a magnetic storage tape and optically diffractive media. The method includes generating a read signal from a read element associated with a transducer head, the read signal generated from a reference data track stored on a magnetic storage medium, and determining a relative position of a first diffractive medium with respect to a second diffractive medium, wherein the first diffractive medium is associated with the storage medium. The transducer head is repositioned relative to the storage medium in response to the read signal and the relative position of the first diffractive medium and the second diffractive medium.
    • 在一个示例中,提供了一种用于利用磁存储带和光学衍射介质上的现有或预先写入的数据结构来检测换能器头相对于存储介质的相对位置的方法。 该方法包括从与换能器头相关联的读取元件产生读取信号,从存储在磁性存储介质上的参考数据轨道产生的读取信号,以及确定第一衍射介质相对于第二衍射介质的相对位置 ,其中所述第一衍射介质与所述存储介质相关联。 响应于读取信号和第一衍射介质和第二衍射介质的相对位置,换能器头相对于存储介质重新定位。
    • 8. 发明授权
    • Optical tape drive movable planarizer subsystem and method for minimizing damage to an optical pickup unit
    • 光学带驱动可移动平面化器子系统和用于最小化对光学拾取单元的损害的方法
    • US08520482B2
    • 2013-08-27
    • US13703102
    • 2011-06-13
    • Faramarz Mahnad
    • Faramarz Mahnad
    • G11B7/00
    • G11B15/62G11B7/003G11B15/26G11B15/60
    • In an optical tape drive system, a movable planarizer subsystem includes a tape planarizer support structure for supporting an optical tape planarizer. The support structure is moveable between an operational position and a non-operational position. The movable planarizer subsystem also includes an actuator for moving the support structure and the optical tape planarizer between the operational position and the non-operational position. The operational position of the support structure positions the optical tape planarizer to permit reading/writing of information from/to an optical tape via an optical pickup unit (OPU), and the non-operational position of the support structure positions the optical tape planarizer to permit passage of a tape leader through the tape drive system without damage to the OPU.
    • 在光带驱动系统中,可移动平面化器子系统包括用于支撑光带平面化器的带平坦化器支撑结构。 支撑结构可在操作位置和非操作位置之间移动。 可移动平面化器子系统还包括用于在操作位置和非操作位置之间移动支撑结构和光带平面化器的致动器。 支撑结构的操作位置使光带平面化器能够经由光学拾取单元(OPU)从光学带读取/写入信息,并且支撑结构的非操作位置将光学带平面化器定位到 允许磁带引导件通过磁带机系统,而不会损坏OPU。
    • 9. 发明申请
    • OPTICAL TAPE DRIVE MOVABLE PLANARIZER SUBSYSTEM AND METHOD FOR MINIMIZING DAMAGE TO AN OPTICAL PICKUP UNIT
    • 光学带驱动可移动平面设备子系统和最小化光学拾取单元损伤的方法
    • US20130086599A1
    • 2013-04-04
    • US13703102
    • 2011-06-13
    • Faramarz Mahnad
    • Faramarz Mahnad
    • G11B15/62
    • G11B15/62G11B7/003G11B15/26G11B15/60
    • In an optical tape drive system, a movable planarizer subsystem includes a tape planarizer support structure for supporting an optical tape planarizer. The support structure is moveable between an operational position and a non-operational position. The movable planarizer subsystem also includes an actuator for moving the support structure and the optical tape planarizer between the operational position and the non-operational position. The operational position of the support structure positions the optical tape planarizer to permit reading/writing of information from/to an optical tape via an optical pickup unit (OPU), and the non-operational position of the support structure positions the optical tape planarizer to permit passage of a tape leader through the tape drive system without damage to the OPU.
    • 在光带驱动系统中,可移动平面化器子系统包括用于支撑光带平面化器的带平坦化器支撑结构。 支撑结构可在操作位置和非操作位置之间移动。 可移动平面化器子系统还包括用于在操作位置和非操作位置之间移动支撑结构和光带平面化器的致动器。 支撑结构的操作位置使光带平面化器能够经由光学拾取单元(OPU)从光学带读取/写入信息,并且支撑结构的非操作位置将光学带平面化器定位到 允许磁带引导件通过磁带机系统,而不会损坏OPU。