SYSTEMS AND METHODS FOR WRITING SERVO PATTERNS

    公开(公告)号:US20190156858A1

    公开(公告)日:2019-05-23

    申请号:US16256929

    申请日:2019-01-24

    IPC分类号: G11B5/592 G11B5/008 G11B5/584

    摘要: A computer program product for writing a servo track includes a computer readable storage medium having program instructions embodied therewith. The program instructions are executable by a computer. The program instructions cause the computer to monitor a lateral position of a magnetic tape passing over a servo writing head during a servo track writing operation and write servo marks to the magnetic tape. A timing of the writing of each mark is based on the monitored position of the magnetic tape. A computer program product for writing a servo track includes a computer readable storage medium having program instructions embodied therewith. The program instructions are executable by a computer. The program instructions cause the computer to optically monitor a lateral position of a magnetic tape passing over a servo writing head during a servo track writing operation.

    MAGNETIC TAPE MEDIA HAVING SERVO PATTERNS
    2.
    发明申请

    公开(公告)号:US20180068686A1

    公开(公告)日:2018-03-08

    申请号:US15807470

    申请日:2017-11-08

    摘要: Magnetic tape media according to one embodiment includes a plurality of servo tracks having physical characteristics of being written by an apparatus that monitors a lateral position of the magnetic tape media passing over a servo writing head during a servo track writing operation and writes servo marks to the magnetic tape media. A timing of the writing of each servo mark is based on the monitored position of the magnetic tape media. Magnetic tape media according to another embodiment include a plurality of servo tracks having a plurality of consecutively-written servo marks, a distance between each consecutively-written servo mark in a tape travel direction varying in direct correlation with a distance of the respective mark, as written, from an edge of the magnetic tape media in a cross-track direction.

    CALIBRATION CORRELATION FOR CALIBRATION ASSEMBLY HAVING ELECTROMAGNETIC READ HEAD
    3.
    发明申请
    CALIBRATION CORRELATION FOR CALIBRATION ASSEMBLY HAVING ELECTROMAGNETIC READ HEAD 有权
    具有电磁读头的校准组件的校准相关性

    公开(公告)号:US20150097552A1

    公开(公告)日:2015-04-09

    申请号:US14569376

    申请日:2014-12-12

    IPC分类号: G01R35/00 G01N27/72

    摘要: According to one embodiment a method of performing a calibration correlation test for a calibration assembly includes sweeping a head module having a magnetic read sensor along a y-axis of the calibration assembly. The calibration assembly has at least one calibration trench having at least one nanoparticle at a known y-axis location in the calibration trench and the magnetic properties are known for the at least one nanoparticle. A read response of the at least one nanoparticles is obtained from the magnetic read sensor and a correlation is determined from the read response. The correlation of the read response is compared to a correlation threshold. The read response correlation is stored in memory in response to determining that the correlation of the read response is greater than the correlation threshold. When the correlation of the read response is not greater than the correlation threshold, a correlation test error is indicated.

    摘要翻译: 根据一个实施例,对校准组件执行校准相关性测试的方法包括沿着校准组件的y轴扫描具有磁读取传感器的头模块。 校准组件具有至少一个在校准沟槽中已知的y轴位置处具有至少一个纳米颗粒的校准沟槽,并且至少一个纳米颗粒的磁特性是已知的。 从磁读​​取传感器获得至少一种纳米颗粒的读取响应,并根据读取响应确定相关性。 将读取响应的相关性与相关阈值进行比较。 响应于确定读响应的相关性大于相关阈值,读响应相关被存储在存储器中。 当读取响应的相关性不大于相关阈值时,指示相关测试误差。

    MAGNETIC TAPE MEDIA HAVING SERVO PATTERNS
    4.
    发明申请
    MAGNETIC TAPE MEDIA HAVING SERVO PATTERNS 有权
    具有伺服模式的磁带介质

    公开(公告)号:US20150070797A1

    公开(公告)日:2015-03-12

    申请号:US14543799

    申请日:2014-11-17

    IPC分类号: G11B5/584

    摘要: Magnetic tape media according to one embodiment includes a servo track having a plurality of servo marks therealong. A distance of the servo marks, as originally written, from an edge of the tape media varies along the length of the magnetic tape media. Magnetic tape media according to another embodiment includes a plurality of servo tracks having physical characteristics of being written by an apparatus that monitors a lateral position of the magnetic tape media passing over a servo writing head during a servo track writing operation and writes servo marks to the magnetic tape media. A timing of the writing of each servo mark is based on the monitored position of the magnetic tape media.

    摘要翻译: 根据一个实施例的磁带介质包括具有多个伺服标记的伺服轨道。 最初写入的伺服标记距磁带介质边缘的距离沿磁带介质的长度变化。 根据另一实施例的磁带介质包括多个伺服轨道,其具有通过在伺服轨迹写入操作期间监视通过伺服写入头的磁带介质的横向位置的装置写入的物理特性,并将伺服标记写入 磁带介质。 每个伺服标记的写入定时是基于磁带介质的监视位置。

    APPROACHING HOMEOSTASIS IN A BINARY NEURAL NETWORK

    公开(公告)号:US20190197390A1

    公开(公告)日:2019-06-27

    申请号:US15853280

    申请日:2017-12-22

    IPC分类号: G06N3/04 G06N3/063

    摘要: Homeostasis-maintaining binary neural networks such as hierarchical temporal memories are provided. In various embodiments, a region of an artificial neural network is initialized. The region comprises a plurality of neurons and has a permanence value associated with each potential synaptic connection between neurons. The initialization comprises connecting a subset of the potential synaptic connections by synapses. A plurality of time-ordered inputs to the region is received. Some of the plurality of neurons are thereby caused to fire upon receipt of each time-ordered input. Upon receipt of each time-ordered input, for each potential synaptic connection between neurons, the permanence value is adjusted according to a firing sequence of the plurality of neurons. Those potential synaptic connections having a permanence value above a predetermined permanence threshold are connected when the total number of connected synapses in the region does not exceed a predetermined connectivity threshold. Synapses whose associated pre-synaptic neuron or post-synaptic neuron have more than a predetermined number of connected synapses are disconnected.

    Spring clip leader and housing for magnetic tape

    公开(公告)号:US10043547B2

    公开(公告)日:2018-08-07

    申请号:US14108279

    申请日:2013-12-16

    摘要: A spring-like clip for a spool of tape, one end of the clip being attached to one end of the tape, and another end of the clip having an engagement feature that allows the clip to be pulled from the spool. The clip is configured to curve around the spool to hold the tape in place. In one general embodiment, a product includes a reel, a tape coupled to the reel, and a spring-like clip coupled to a free end of the tape. The clip is selectively positionable in a wrapped position where the clip wraps around a portion of the tape when the tape is wound onto the reel, thereby holding the portion of the tape in place on the reel. Systems for using various types of such products are presented, and generally include a tape drive configured for reading data from tape stored on such products.

    MAGNETIC TAPE MEDIA HAVING SERVO PATTERNS
    9.
    发明申请
    MAGNETIC TAPE MEDIA HAVING SERVO PATTERNS 有权
    具有伺服模式的磁带介质

    公开(公告)号:US20170011762A1

    公开(公告)日:2017-01-12

    申请号:US15271092

    申请日:2016-09-20

    IPC分类号: G11B5/592 G11B5/008 G11B5/584

    摘要: Magnetic tape media according to one embodiment includes a plurality of servo tracks having physical characteristics of being written by an apparatus that monitors a lateral position of the magnetic tape media passing over a servo writing head during a servo track writing operation and writes servo marks to the magnetic tape media. A timing of the writing of each servo mark is based on the monitored position of the magnetic tape media.

    摘要翻译: 根据一个实施例的磁带介质包括多个伺服轨道,其具有通过在伺服轨迹写入操作期间监视通过伺服写入头的磁带介质的横向位置的装置来写入的物理特性,并将伺服标记写入 磁带介质。 每个伺服标记的写入定时是基于磁带介质的监视位置。

    Magnetic tape media having servo patterns
    10.
    发明授权
    Magnetic tape media having servo patterns 有权
    具有伺服模式的磁带介质

    公开(公告)号:US09495985B2

    公开(公告)日:2016-11-15

    申请号:US14543799

    申请日:2014-11-17

    摘要: Magnetic tape media according to one embodiment includes a servo track having a plurality of servo marks therealong. A distance of the servo marks, as originally written, from an edge of the tape media varies along the length of the magnetic tape media. Magnetic tape media according to another embodiment includes a plurality of servo tracks having physical characteristics of being written by an apparatus that monitors a lateral position of the magnetic tape media passing over a servo writing head during a servo track writing operation and writes servo marks to the magnetic tape media. A timing of the writing of each servo mark is based on the monitored position of the magnetic tape media.

    摘要翻译: 根据一个实施例的磁带介质包括具有多个伺服标记的伺服轨道。 最初写入的伺服标记距磁带介质边缘的距离沿磁带介质的长度变化。 根据另一实施例的磁带介质包括多个伺服轨道,其具有通过在伺服轨迹写入操作期间监视通过伺服写入头的磁带介质的横向位置的装置写入的物理特性,并将伺服标记写入 磁带介质。 每个伺服标记的写入定时是基于磁带介质的监视位置。