公开(公告)号：US20060082915A1

公开(公告)日：2006-04-20

申请号：US10966531

申请日：2004-10-15

申请人： Evangelos Eleftheriou ,  Ernest Gale ,  Robert Hutchins ,  Glen Jaquette ,  Sedat Oelcer

发明人： Evangelos Eleftheriou ,  Ernest Gale ,  Robert Hutchins ,  Glen Jaquette ,  Sedat Oelcer

IPC分类号： G11B5/02

CPC分类号： H03M1/1042 ,  G11B20/10 ,  G11B2220/90

摘要： An apparatus, system, and method are disclosed for mitigating signal asymmetry. An analog to digital converter samples an analog signal from a read head and converts the sample to a digital input signal. The digital input signal addresses a look-up module, and the look-up module outputs a modified digital signal. The modified digital signal value is a specified function of the digital input signal value, wherein the specified function is configured to mitigate the asymmetry of the digital input signal. The modified digital signal value may be periodically recalculated to adjust for read head wear.

公开(公告)号：US20070115581A1

公开(公告)日：2007-05-24

申请号：US11286808

申请日：2005-11-22

申请人： Nhan Bui ,  Ernest Gale ,  Eiji Ogura ,  David Swanson

发明人： Nhan Bui ,  Ernest Gale ,  Eiji Ogura ,  David Swanson

IPC分类号： G11B5/584

CPC分类号： G11B5/584

摘要： Selection of servo signals for peak detection of timing based servo tracks of magnetic tape for lateral positioning of heads relative to the magnetic tape. Servo signals from magneto-resistive servo read head(s) reading a magnetic tape are digitized by analog to digital converter(s); digital peak measurement apparatus is configured to sense the digital converter(s), and provide positive peak values and negative peak values of the digitized servo signals; and control apparatus is configured to determine the greater of the provided positive peak values or negative peak values, and select servo signals having the greater values for a servo channel. Servo apparatus is configured to respond to the selected servo signals to control the lateral positioning of the servo read head(s).

摘要翻译： 选择伺服信号，用于峰值检测用于磁头的定时伺服磁道，用于磁头相对于磁带的横向定位。 来自读磁带的磁阻伺服读头的伺服信号由模拟数字转换器数字化; 数字峰值测量装置被配置为感测数字转换器，并且提供数字化伺服信号的正峰值和负峰值; 并且控制装置被配置为确定所提供的正峰值或负峰值中的较大值，并且选择对伺服信道具有较大值的伺服信号。 伺服装置被配置为响应所选择的伺服信号以控制伺服读取头的横向定位。

公开(公告)号：US07280307B2

公开(公告)日：2007-10-09

申请号：US11351774

申请日：2006-02-10

申请人： Nhan Bui ,  Ernest Gale ,  Eiji Ogura ,  Kazuhiro Tsuruta

发明人： Nhan Bui ,  Ernest Gale ,  Eiji Ogura ,  Kazuhiro Tsuruta

IPC分类号： G11B21/02

CPC分类号： G11B5/584

摘要： A magnetic tape drive, having a compound servo actuator, reduces the possibility of overshoots of servo elements when a tape cartridge is loaded, thereby reducing servo failures. The coarse motor is activated, then deactivated when the servo elements locate a servo pattern on the tape. After initialization of a DAC offset in the servo controller to 0, the position of the fine actuator is read. The fine actuator is enabled, with a DAC input of 0 and, after a short wait, the position is again read. The new DAC offset equals the initial DAC offset plus the difference between the two positions. If the difference is less than a predetermined threshold, the servo controller may obtain a lock on the servo signals and commence tracking. If the difference is not less, the process is repeated, with the DAC offset being adjusted each time, until the difference is less than a predetermined threshold.

摘要翻译： 具有复合伺服致动器的磁带驱动器减少了当装入带盒时伺服元件过冲的可能性，从而减少了伺服故障。 粗电机被激活，然后当伺服元件在磁带上定位伺服模式时，停用。 在伺服控制器中DAC偏移初始化为0后，读取精细执行器的位置。 精准执行器使能，DAC输入为0，在短暂等待之后，再次读取位置。 新的DAC偏移量等于初始DAC偏移加上两个位置之间的差值。 如果差小于预定阈值，则伺服控制器可获得对伺服信号的锁定并开始跟踪。 如果差值不小于该值，则每次调整DAC偏移量，直到该差值小于预定阈值为止。

公开(公告)号：US20060285237A1

公开(公告)日：2006-12-21

申请号：US11154123

申请日：2005-06-16

申请人： Josephine Bayang ,  Ernest Gale ,  David Swanson

发明人： Josephine Bayang ,  Ernest Gale ,  David Swanson

IPC分类号： G11B5/09 ,  G11B5/03

CPC分类号： G11B5/09 ,  G11B5/00813 ,  G11B20/10009 ,  G11B2005/0013

摘要： Mitigation of distortion of read signals from magneto-resistive read head(s) are provided in various embodiments of the present invention. In one embodiment, the read signals provided to a read channel having an analog to digital converter and digital equalizer. Digital peak measurement apparatus is configured to sense the output of the digital equalizer, and provide average positive peak values and average negative peak values of the output. Control apparatus is configured to respond to the peak values, to iteratively determine asymmetry of the peak values and estimate the cancellation slope of the asymmetry and cancellation term relationship; from the measured asymmetry and estimated cancellation slope, to iteratively estimate the convergence cancellation term; and to feed back the convergence cancellation term to modify the digital read signals for the input of the digital equalizer to iteratively converge the asymmetry to substantially zero.

摘要翻译： 在本发明的各种实施例中提供了从磁阻读取头读取信号的失真的缓解。 在一个实施例中，提供给具有模数转换器和数字均衡器的读通道的读信号。 数字峰值测量装置被配置为感测数字均衡器的输出，并且提供输出的平均正峰值和平均负峰值。 控制装置被配置为响应峰值，迭代地确定峰值的不对称性并且估计不对称和消除项关系的抵消斜率; 从测量的不对称和估计的抵消斜率，迭代估计收敛消除项; 并且反馈收敛消除项以修改用于数字均衡器的输入的数字读取信号，以将不对称性迭代收敛到基本为零。

公开(公告)号：US20060072234A1

公开(公告)日：2006-04-06

申请号：US10937965

申请日：2004-09-10

申请人： Robert Biskeborn ,  Ernest Gale ,  James Karp ,  Lee Randall ,  Daniel Winarski

发明人： Robert Biskeborn ,  Ernest Gale ,  James Karp ,  Lee Randall ,  Daniel Winarski

IPC分类号： G11B19/02

CPC分类号： G11B5/41

摘要： A system, a method, and article of manufacture are employed to clean the input/output transducers on tape drives, verified by the tape drives reading alphanumeric information from data tracks and servo tracks of a cleaner tape. An aggressive cleaning frontcoat section of the cleaner tape can be used to provide additional cleaning action, and the cleanliness of the data read elements, data write elements, and the servo heads. A less-abrasive cleaning section may be used to clean less difficult types of contaminants. In this manner, the cleanliness of the data read elements, the data write elements, and the servo heads can be verified. A cleaning section may also be used as a leader section of a self-characterization section. Alternatively, a magnetic data tape section may be included for self-characterization.

摘要翻译： 采用系统，方法和制品来清理磁带驱动器上的输入/输出换能器，由磁带驱动器读取数据轨道和清洁磁带的伺服轨道的字母数字信息进行验证。 清洁器带的积极的清洁前涂层部分可用于提供额外的清洁动作，以及数据读取元件，数据写入元件和伺服头的清洁度。 较少研磨的清洁部分可用于清洁较不困难的污染物类型。 以这种方式，可以验证数据读取元件，数据写入元件和伺服磁头的清洁度。 清洁部分也可以用作自我表征部分的引导部分。 或者，可以包括磁数据带部分用于自我表征。

公开(公告)号：US20070188910A1

公开(公告)日：2007-08-16

申请号：US11351774

申请日：2006-02-10

申请人： Nhan Bui ,  Ernest Gale ,  Eiji Ogura ,  Kazuhiro Tsuruta

发明人： Nhan Bui ,  Ernest Gale ,  Eiji Ogura ,  Kazuhiro Tsuruta

IPC分类号： G11B5/584 ,  G11B5/55

CPC分类号： G11B5/584

摘要： A magnetic tape drive, having a compound servo actuator, reduces the possibility of overshoots of servo elements when a tape cartridge is loaded, thereby reducing servo failures. The coarse motor is activated, then deactivated when the servo elements locate a servo pattern on the tape. After initialization of a DAC offset in the servo controller to 0, the position of the fine actuator is read. The fine actuator is enabled, with a DAC input of 0 and, after a short wait, the position is again read. The new DAC offset equals the initial DAC offset plus the difference between the two positions. If the difference is less than a predetermined threshold, the servo controller may obtain a lock on the servo signals and commence tracking. If the difference is not less, the process is repeated, with the DAC offset being adjusted each time, until the difference is less than a predetermined threshold.

摘要翻译： 具有复合伺服致动器的磁带驱动器减少了当装入带盒时伺服元件过冲的可能性，从而减少了伺服故障。 粗电机被激活，然后当伺服元件在磁带上定位伺服模式时，停用。 在伺服控制器中DAC偏移初始化为0后，读取精细执行器的位置。 精准执行器使能，DAC输入为0，在短暂等待之后，再次读取位置。 新的DAC偏移量等于初始DAC偏移加上两个位置之间的差值。 如果差小于预定阈值，则伺服控制器可获得对伺服信号的锁定并开始跟踪。 如果差值不小于该值，则每次调整DAC偏移量，直到该差值小于预定阈值为止。

公开(公告)号：US20070014042A1

公开(公告)日：2007-01-18

申请号：US11183540

申请日：2005-07-18

申请人： Pamela Nylander-Hill ,  Ernest Gale

发明人： Pamela Nylander-Hill ,  Ernest Gale

IPC分类号： G11B27/36

CPC分类号： G11B20/1879 ,  G11B27/36 ,  G11B2220/90

摘要： Method and apparatus are provided for presenting various levels of detail about successful error recoveries and background hardware optimizations during the recording and retrieval of digital information on magnetic tape. A first, Band Summary, report presents a high-level summary of recovery methods by data band and wrap. A second, Detail Summary, report presents a mid-level summary of recovery methods by track and longitudinal position (LPOS) region within one wrap of a band on the tape. A third, ERP Summary, report presents a low-level summary of errors and specific recovery methods and optimizations by LPOS region within each wrap. Such “telescoping” views permit pattern analysis to be performed at different resolutions. Thus, correlations of possible interactions between hardware and microcode activities that result in changes of the nominal operating point of the drive may be identified. Possible failure patterns may also be identified and fed back to design personnel and incorporated in microcode design changes for more effective ERP.

摘要翻译： 提供了方法和装置，用于在记录和检索磁带上的数字信息期间呈现关于成功的错误恢复和背景硬件优化的各种细节。 第一个“乐队摘要”报告提供了数据乐队和包装的恢复方法的高级总结。 第二个“细节摘要”报告介绍了磁带上一个带的一个包裹内的轨道和纵向位置（LPOS）区域的恢复方法的中级摘要。 第三个“ERP摘要”报告介绍了每个包装内LPOS区域的错误和具体的恢复方法和优化的低级摘要。 这种“望远镜”的观点允许以不同的分辨率进行模式分析。 因此，可以识别导致驱动器的标称工作点的变化的硬件和微代码活动之间可能的相互作用的相关性。 也可能识别可能的故障模式并将其反馈给设计人员，并将其纳入微代码设计更改以实现更有效的ERP。

公开(公告)号：US20050283327A1

公开(公告)日：2005-12-22

申请号：US10932372

申请日：2004-06-21

申请人： Catherine Bowman ,  Ernest Gale

发明人： Catherine Bowman ,  Ernest Gale

IPC分类号： G06F19/00

CPC分类号： G06F19/3475

摘要： A device and method for collecting, analyzing, displaying and storing information relevant for determining the nutritional progress of a breastfed infant, including, but not limited to: time and duration of breast feedings, amount of breast milk or formula fed by bottle, time and frequency of wet and dirty diapers and length, weight and age of the infant.

摘要翻译： 一种用于收集，分析，显示和存储与确定母乳喂养婴儿的营养进展相关的信息的装置和方法，包括但不限于：母乳喂养的时间和持续时间，母乳的量或由奶瓶喂养的配方，时间和 湿肮脏尿布的频率和婴儿的长度，体重和年龄。