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    • 3. 发明授权
    • Servo control of bi-directional reel-to-reel tape drives using fine-line
tachometers with index lines
    • 使用带索引线的细线转速计对双向卷轴到卷轴磁带机进行伺服控制
    • US5576905A
    • 1996-11-19
    • US396094
    • 1995-02-28
    • Joe L. GarciaPaul Y. HuJohn A. Koski
    • Joe L. GarciaPaul Y. HuJohn A. Koski
    • G11B15/46G11B15/54G11B15/67
    • G11B15/54
    • Air entrainment effects are avoided in a bi-directional, reel-to-reel tape transport in which magnetic tape can be moved in either of two opposing directions for data recording thereon. Control of tape position is implemented in a servo algorithm that uses tachometer inputs to determine parameter values for generating reel motor drive currents. A fine-line tachometer is mounted on each of two reels in the tape drive and multiplexing selects the fine-line output from the tachometer on the reel supplying tape for use in the servo algorithm. At least one of the tachometers is preferably of the type which generates an index line once each revolution of the motor to which it is mounted. This tachometer is coupled to the reel to which the tape is initially threaded and the index line is used to indicate that the motor is at a predetermined threading position for this operation.
    • 在双向卷轴到卷轴带传输中避免了气流夹带效应,其中磁带可以在两个相反的方向中的任一个上移动以便在其上进行数据记录。 磁带位置的控制是以伺服算法实现的,该算法使用转速计输入来确定用于产生卷轴电机驱动电流的参数值。 在磁带驱动器中的两个卷轴中的每一个上安装细线转速表,并且多路复用选择用于伺服算法的卷轴供带上的转速计的细线输出。 至少一个转速计最好是一旦它安装在其上的电机的每一转就产生一个分度线。 该转速计耦合到带初始螺纹穿过的卷轴,并且索引线用于指示马达处于用于该操作的预定螺纹位置。
    • 6. 发明授权
    • Gravity feed data storage library having magnetic picker
    • 具有磁选机的重力馈送数据存储库
    • US5508859A
    • 1996-04-16
    • US372726
    • 1995-01-17
    • Paul Y. HuDonald W. LloydJames C. Simkins
    • Paul Y. HuDonald W. LloydJames C. Simkins
    • G11B15/68G11B17/22G11B17/04
    • G11B17/225G11B15/6835Y10S414/111
    • An automated storage library having the ability to store and manipulate data storage elements in three dimensions. Data storage elements such as tape cartridges are stored in storage compartments separated by low-friction downward sloping sliding planes each capable of holding a plurality of data storage elements. The automated storage library further includes a magnetic picker apparatus having two electromagnetic coils. In one embodiment, the two coils are energized simultaneously with the first coil used to reposition an L-shaped flipper. This flipper raises a roller gate positioned at one end of a storage compartment to release a stored data storage element. The second electromagnetic coil supplements the gravitational pull on the data storage element by attracting a steel strip on the face of the data storage element and an associated coil carriage retrieves the data storage element from the compartment.
    • 具有存储和操纵三维数据存储元件的能力的自动存储库。 诸如磁带盒的数据存储元件被存储在由能够保持多个数据存储元件的低摩擦向下倾斜滑动平面分开的存储隔间中。 自动存储库还包括具有两个电磁线圈的磁选机。 在一个实施例中,两个线圈与用于重新定位L形导板的第一线圈同时通电。 该导板提升位于储藏室一端的辊栅,释放存储的数据存储元件。 第二电磁线圈通过在数据存储元件的表面上吸引钢带来补充数据存储元件上的重力拉动,并且相关联的线圈架从隔室取出数据存储元件。
    • 7. 发明授权
    • Reduced wear cable carrier and pads
    • 减少磨损电缆载体和垫片
    • US5343989A
    • 1994-09-06
    • US991687
    • 1992-12-16
    • Paul Y. HuDavid R. LymanD. Kenneth Walston
    • Paul Y. HuDavid R. LymanD. Kenneth Walston
    • H02G3/04H02G11/00H01B7/24
    • H02G11/006H02G3/0475
    • A cable carrier that slides upon itself is provided with pad and padless surfaces or a stainless steel strip therealong. The cable carrier may be connected to a fast moving robotic trolley and manipulative arm assembly in a storage library containing automated magnetic tape cartridges or optical disk cartridges or magnetic disk cartridges. The pad and padless surfaces are made of dissimilar materials, such as stainless steel and plastic respectively. When the pad and padless surfaces slide across one another, there is a minimum of wear and galling of the surfaces. Several arrangements are employed to quickly modify existing carriers to obtain the benefits of this invention. One type of discrete pad can be easily mounted to the existing carrier with double-sided tape and another type of discrete pad can be easily mounted to the existing carrier with tabs. Further, both type of pads are configured with curves to make a smooth transition of pad-to-padless surface or pad-to-pad surface. Another embodiment of the invention is a pad that consists of a stainless steel strip. The stainless steel strip can be easily attached to the carrier with doublesided tape. Since the strip is stainless steel, there is very little wear or galling as compared to that arising from plastic sliding on plastic.
    • 一个自身滑动的电缆托架设有衬垫和无衬垫表面或不锈钢带。 电缆托架可以连接到包含自动磁带盒或光盘盒或磁盘盒的存储库中的快速移动的机器人手推车和操纵臂组件。 垫和无表面分别由不同的材料制成,例如不锈钢和塑料。 当垫和无表面彼此滑动时,表面的磨损和磨损最少。 采用几种布置来快速修改现有载体以获得本发明的益处。 一种类型的离散焊盘可以容易地安装到具有双面胶带的现有载体上,并且另一种类型的离散焊盘可以容易地安装到具有突出部的现有载体上。 此外,两种类型的焊盘都配置有曲线,以使焊盘到焊盘表面或焊盘对焊盘表面平滑过渡。 本发明的另一个实施例是由不锈钢带组成的垫。 不锈钢带可以轻松地连接到载体与双面胶带。 由于钢带是不锈钢,与塑料上的塑料滑动相比,磨损或磨损非常小。
    • 10. 发明授权
    • Single magnetic tape reel with dual-sided recording capability
    • 具有双面录音功能的单磁带卷盘
    • US06246542B1
    • 2001-06-12
    • US09366101
    • 1999-08-02
    • Paul Y. Hu
    • Paul Y. Hu
    • G11B23107
    • G11B15/67G11B23/107
    • A magnetic media tape cartridge has a housing with a spool of magnetic tape wound on the spool. The tape is two-sided so that information can be recorded on both sides. The sides of the tape maintain an orthogonal planar orientation relative to the axis of the spool at all times. The housing has separate openings for accessing each side of the tape. A leading end of the tape protrudes through a third opening in the housing for offloading the tape onto a take-up reel. A door is pivotally mounted to the housing at each of the first two openings for covering and uncovering each side of the tape. The tape cartridge also has an indicator for indicating which side of the tape is being recorded or accessed.
    • 磁性介质带盒具有壳体,其具有卷绕在卷轴上的磁带卷轴。 磁带是双面的,以便信息可以记录在两边。 磁带的侧面始终保持相对于卷轴轴线的正交平面取向。 壳体具有用于接近磁带的每一侧的独立开口。 带的前端通过壳体中的第三个开口突出,以将带子卸载到卷带盘上。 在所述前两个开口中的每一个处,门被可枢转地安装到所述壳体,以覆盖和揭开所述带的每一侧。 磁带盒还具有指示磁带正在被记录或访问哪一侧的指示器。