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1. 发明授权

US5363253A Tape drive fast seek to end-of-track 失效
标题翻译：磁带机快速寻求终点轨道
公开(公告)号：US5363253A
公开(公告)日：1994-11-08
申请号：US23258
申请日：1993-02-25
申请人： Mark E. Nash , John K. Moore , Kevin L. Miller
发明人： Mark E. Nash , John K. Moore , Kevin L. Miller
IPC分类号： G11B5/008 , G06F3/06 , G11B5/09 , G11B15/02 , G11B15/12 , G11B21/08 , G11B27/10 , G11B27/24 , G11B27/36 , G11B15/18
CPC分类号： G06F3/0601 , G11B15/026 , G11B15/125 , G11B21/081 , G11B27/107 , G11B27/24 , G11B27/36 , G06F2003/0698 , G11B2220/95
摘要： A tape drive control system with improved overall dam transfer rate. A streaming tape drive system for a multi-track serpentine data tape is controlled by a host computer. The data tape has a fixed number of data sectors per track. The host computer monitors tape position by observing data sector identification. The drive sends a ready/not-ready status signal to the host. The drive has a default mode. In the default mode, the drive generates an error signal if the host sends motor speed commands or head movement commands when the drive is sending a not-ready status. The host computer software can command the drive to enter a special mode. In the special mode, the drive does not generate an error if the host sends motor speed commands or head movement commands when the drive is sending a not-ready status. After placing the drive in the special mode, when the end of data for a track is reached, the host computer ignores the drive status signal and commands the tape drive to immediately set its motor to the maximum speed and to immediately move the head to the next track.
摘要翻译：一种磁带驱动器控制系统，具有改进的总体坝传输速率。用于多轨蛇形数据磁带的流式磁带驱动器系统由主机控制。数据磁带每个磁道具有固定数量的数据扇区。主机通过观察数据扇区标识来监视磁带位置。驱动器向主机发送就绪/未就绪状态信号。驱动器具有默认模式。在默认模式下，如果主机在发送未就绪状态时主机发送电机速度命令或磁头移动命令，驱动器将生成错误信号。主机软件可以命令驱动器进入特殊模式。在特殊模式下，如果主机在发送未就绪状态时主机发送电机速度命令或头部移动命令，驱动器不会产生错误。将驱动器置于特殊模式后，当达到轨道的数据结束时，主机忽略驱动器状态信号，并命令磁带机立即将其电机设置为最大速度，并立即将磁头移动到下一曲。

2. 发明授权

US5361176A Index pulse generation in a data storage tape drive 失效
标题翻译：在数据存储磁带机中产生索引脉冲
公开(公告)号：US5361176A
公开(公告)日：1994-11-01
申请号：US41080
申请日：1993-04-01
申请人： Jeffrey D. Schwartz , Mark E. Nash
发明人： Jeffrey D. Schwartz , Mark E. Nash
IPC分类号： G11B20/12 , G11B27/13 , G11B27/30 , G11B5/09
CPC分类号： G11B20/1205 , G11B27/13 , G11B27/3027 , G11B2220/90
摘要： An apparatus and method for generating an index pulse by a data storage tape drive. The tape drive is controlled by a flexible disk controller. A multi-track tape is formatted into multiple data segments per track with erased areas between segments. A digital data signal from the tape signal processor is sampled to detect a lapse in data. Then, the analog data signal is continuously monitored to detect the reappearance of data. When filtered analog signal peaks exceed a fixed threshold, a pulse is generated from the tape drive to the flexible disk controller. In an alternative embodiment, to further protect against false triggering, index pulse generation is suppressed during most of each erased area between segments. In another embodiment, index pulse generation is suppressed if an erased area exceeds a length threshold, such as at the end of the tape. In still another embodiment, index pulse generation is suppressed if digital data reappears without triggering the analog monitoring circuit.
摘要翻译：一种用于通过数据存储磁带驱动器生成索引脉冲的装置和方法。磁带驱动器由一个软盘控制器控制。多轨磁带被格式化为每个轨道的多个数据段，并且段之间具有擦除区域。来自带信号处理器的数字数据信号被采样以检测数据中的经过。然后，连续监视模拟数据信号，以检测数据的再现。当滤波模拟信号峰值超过固定阈值时，会从磁带驱动器到软盘控制器产生脉冲。在替代实施例中，为了进一步防止错误触发，在片段之间的每个擦除区域的大部分期间抑制索引脉冲生成。在另一个实施例中，如果擦除区域超过长度阈值，例如在磁带末端，则抑制索引脉冲产生。在另一个实施例中，如果数字数据重新出现而不触发模拟监视电路，则抑制索引脉冲产生。

3. 发明授权

US5852535A Accurate measurement of preformatted track servo patterns by a magnetic data tape drive 失效
标题翻译：通过磁数据磁带驱动器精确测量预格式轨道伺服模式
公开(公告)号：US5852535A
公开(公告)日：1998-12-22
申请号：US609254
申请日：1996-02-29
申请人： Kenneth G. Richardson , Mark Millican , Erik Habbinga , Mark E. Mills , Stephen G. Uhlmann , Mark E. Nash
发明人： Kenneth G. Richardson , Mark Millican , Erik Habbinga , Mark E. Mills , Stephen G. Uhlmann , Mark E. Nash
IPC分类号： G11B5/027 , G11B5/55 , G11B5/584 , G11B15/08 , G11B5/02
CPC分类号： G11B15/08 , G11B5/5508 , G11B5/584
摘要： A method for reliably measuring preformatted servo patterns, on a magnetic tape, for positioning a magnetic head. The tape has constant frequency stripes marking servo pattern areas. The drive reading the preformatted tape has a read channel amplifier with automatic gain control (AGC). When a stripe is detected, AGC is enabled. Before leaving a stripe, AGC is placed on hold. The amplitudes of two servo bursts are then measured with a gain that has been calibrated by a signal from a stripe. During the time AGC is enabled, the amplifier peak output is limited to less than half the maximum amplifier peak output. The servo pattern signal amplitude is about twice the signal amplitude of a stripe, so that servo patterns are measured with almost the maximum signal-to-noise ratio. When a stripe is detected, a counter counts pulses resulting from the stripe signal, for a fixed time, to ensure that the stripe detection is valid. If the stripe is qualified, the servo pattern measurements are used for head alignment adjustment. If the strip is not qualified, the servo pattern measurements are discarded.
摘要翻译：一种在磁带上可靠地测量用于定位磁头的预格式伺服图案的方法。磁带具有标记伺服图案区域的恒定频率条纹。读取预格式化磁带的驱动器具有带有自动增益控制（AGC）的读通道放大器。检测到条带时，启用AGC。在离开条纹之前，AGC被置于保持状态。然后用已经通过条带的信号校准的增益来测量两个伺服脉冲串的振幅。在启用AGC的时间内，放大器峰值输出被限制为小于最大放大器峰值输出的一半。伺服模式信号幅度约为条纹信号幅度的两倍，从而以几乎最大的信噪比测量伺服模式。当检测到条纹时，计数器对条带信号产生的脉冲计数一定时间，以确保条形检测有效。如果条纹合格，则使用伺服模式测量来进行头部对准调整。如果条带不合格，则丢弃伺服模式测量。

4. 发明授权

US5467231A Using recorded data for auto calibration of fixed gain of a read amplifier in a data storage device 失效
标题翻译：使用记录数据自动校准数据存储设备中读取放大器的固定增益
公开(公告)号：US5467231A
公开(公告)日：1995-11-14
申请号：US322964
申请日：1994-10-13
申请人： Mark E. Nash , Ronald R. Kennedy
发明人： Mark E. Nash , Ronald R. Kennedy
IPC分类号： G11B5/035 , G11B20/10 , G11B5/09 , G11B5/02
CPC分类号： G11B20/10027 , G11B20/10009 , G11B5/035
摘要： A method and apparatus for using a varying amplitude data signal from a data storage medium such as a magnetic disk or magnetic tape to calibrate the gain of the data signal amplifier to an optimal fixed gain. At initialization, amplified data signal peaks are detected over a data region of the data storage medium. The amplified signal peaks are compared to a predetermined reference. The signal amplifier gain is adjusted until only a few amplified signal peaks exceed the reference. The amplifier gain is then fixed at the final adjusted value.
摘要翻译：一种使用来自诸如磁盘或磁带的数据存储介质的变化幅度数据信号的方法和装置，以将数据信号放大器的增益校准为最佳固定增益。在初始化时，在数据存储介质的数据区域上检测放大的数据信号峰值。将放大的信号峰值与预定参考值进行比较。调整信号放大器增益，直到只有几个放大的信号峰值超过参考值。然后将放大器增益固定为最终调整值。

5. 发明授权

US5265208A Addressable computer tape drive activation system 失效
标题翻译：可寻址计算机磁带机激活系统
公开(公告)号：US5265208A
公开(公告)日：1993-11-23
申请号：US693677
申请日：1991-04-30
申请人： John K. Moore , Mark E. Nash
发明人： John K. Moore , Mark E. Nash
IPC分类号： G06F3/06 , G06F13/00
CPC分类号： G06F3/0601 , G06F2003/0698
摘要： A selectible computer tape drive activation and deactivation technique apparatus is disclosed. The invention integrates with existing floppy controllers in a manner which allows activation and deactivation of a computer tape drive without the need for select lines. The invention programs the floppy controller so as to generate an activation command which may be appended by an address to specify the specific drive involved. Both the command and the argument are chosen to be consistent with existing Quarter Inch Committee standards. With respect to the deselect method, additionally a failsafe, independent deactivation path exists to turn off the tape drive in the event any conflict in drive operations were to exist.
摘要翻译：公开了一种可选择的计算机磁带驱动器激活和去激活技术装置。本发明以现有的软盘控制器与允许激活和停用计算机磁带驱动器而不需要选择线路的方式集成。本发明对软盘控制器进行编程，以产生激活命令，该命令可以由地址附加以指定所涉及的特定驱动器。命令和论证都被选为符合现行的英格兰英格兰委员会标准。关于取消选择方法，另外还存在故障安全独立的停用路径，以便在驱动器操作中存在任何冲突的情况下关闭磁带机。

6. 发明授权

US5519548A Using read channel noise to initialize read channel for head position calibration in a magnetic data storage device 失效
标题翻译：使用读通道噪声来初始化磁数据存储设备中磁头位置校准的读通道
公开(公告)号：US5519548A
公开(公告)日：1996-05-21
申请号：US40798
申请日：1993-03-31
申请人： Steven F. Liepe , Jeffrey D. Schwartz , Mark E. Nash
发明人： Steven F. Liepe , Jeffrey D. Schwartz , Mark E. Nash
IPC分类号： G11B5/02 , G11B5/55 , G11B5/035
CPC分类号： G11B5/5534 , G11B5/02
摘要： A method of calibrating signal processing circuitry in a magnetic data storage device. The method ensures that an adequate signal-to-noise ratio is achieved when reading a head-position calibration signal. First, discrimination thresholds are set to an initial low value. Then, with wide bandwidth and stationary media, amplifier gain is calibrated by adjusting gain to make the amplitude of amplified background noise equal to the initial threshold value. Finally, bandwidth is reduced and the discrimination thresholds are raised to a final value. The final threshold value ensures that a signal must exceed a predetermined signal-to-noise ratio before the signal is accepted as being valid.
摘要翻译：一种校准磁数据存储装置中的信号处理电路的方法。该方法确保在读取头位置校准信号时获得足够的信噪比。首先，判别阈值设定为初始值。然后，通过宽带宽和固定介质，通过调节增益校准放大器增益，使放大背景噪声的幅度等于初始阈值。最后，减少带宽，将鉴别阈值提高到最终值。在信号被接受为有效之前，最终阈值确保信号必须超过预定的信噪比。

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