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1. 发明申请

US20090147399A1 MAGNETIC MEDIA FORMATTED WITH AN INTEGRATED THIN FILM SUBGAP SUBPOLE STRUCTURE FOR ARBITRARY GAP PATTERN MAGNETIC RECORDING HEAD 审中-公开
标题翻译：磁性介质，用于形成用于横截面图形磁记录头的集成薄膜底片结构
公开(公告)号：US20090147399A1
公开(公告)日：2009-06-11
申请号：US12268076
申请日：2008-11-10
申请人： Matthew P. Dugas , Theodore A. Schwarz
发明人： Matthew P. Dugas , Theodore A. Schwarz
IPC分类号： G11B5/33 , G11B5/78
CPC分类号： G11B5/3103 , G11B5/3163 , G11B5/3173 , G11B5/3179 , G11B5/3183 , G11B5/584
摘要： An arbitrary gap thin film magnetic recording head is fabricated by forming a substrate based on traditional vertical planar thin film head wafer technology which is designed to produce an integrated subgap and subpole substrate structure. The wafer is then processed into row bars to reveal, in a plane parallel to the transducing direction of the medium, the subgap and subpoles at the surface of the row bar and to bring the structure to a certain coil depth or gap depth. A flat or cylindrical contour may be utilized.This thin film subgap row bar is taken through a film deposition or growth process that deposits the magnetic film on a plane perpendicular to the wafer plane, horizontal planar processing, forming a surface film recording head where an arbitrary gap structure can be made in-between the subpoles and generally directly on top of the subgap. The surface thin film is deposited and patterned on the tape bearing surface of the head to optimize various element configurations, gap patterns and head-to-tape medium contact.An arbitrary gap thin film magnetic recording head is manufactured using two major thin film processing planes, one orthogonal to the other, the first major plane is wafer level and the second major plane is sub-wafer level and perpendicular to the first. The first major plane of processing defines the magnetically active substrate including coils, subgap and subpole members. The second major plane of processing defines the surface film which transmits the flux from the subpoles to the gap features contained in the surface film.This resulting structure is a recording head that is wired to the servo system electronics and will format the tape with the arbitrary gap pattern.
摘要翻译：通过基于传统的垂直平面薄膜头晶片技术形成基板来制造任意的间隙薄膜磁记录头，该技术被设计成产生集成的子间隙和亚极基底结构。然后将晶片加工成行条，以在平行于介质的转换方向的平面中显示在行条的表面处的子间隙和亚极，并使结构达到一定的线圈深度或间隙深度。可以使用平坦或圆柱形的轮廓。该薄膜底隙排条通过在垂直于晶片平面的平面上沉积磁膜的膜沉积或生长工艺，水平平面处理，形成表面胶片记录头，其中可以在其间形成任意间隙结构子笔和通常直接在子间隙的顶部。表面薄膜被沉积并图案化在头部的带状表面上，以优化各种元件构造，间隙图案和头对带介质接触。使用两个主要的薄膜处理平面制造任意的间隙薄膜磁记录头，一个正交于另一个的第一主平面是晶片级，第二主平面是次晶片级并垂直于第一主平面。第一主要处理平面定义了包括线圈，子间隙和子极构件的磁性活性衬底。第二主要处理平面限定了将来自亚极的磁通传递到包含在表面膜中的间隙特征的表面膜。这种结构的结构是连接到伺服系统电子设备的记录头，并且将以任意的间隙图形来格式化磁带。

2. 发明授权

US06091565A Head assembly having a single pass servo writer 失效
标题翻译：头组件具有单程伺服写入器
公开(公告)号：US06091565A
公开(公告)日：2000-07-18
申请号：US322879
申请日：1999-05-28
申请人： Theodore A. Schwarz , Robert J. Youngquist , Hung T. Tran
发明人： Theodore A. Schwarz , Robert J. Youngquist , Hung T. Tran
IPC分类号： G11B5/55 , G11B5/584 , G11B21/08 , G11B21/10 , G11B21/02
CPC分类号： G11B5/5508 , G11B21/083 , G11B21/103 , G11B5/5504 , G11B5/584
摘要： A tape servo system includes tape having bands of tracks including at least one data band having a plurality of data tracks of track pitch P and a servo band dedicated for servo information. The servo band includes two or more noncontiguous servo tracks with each pair of adjacent servo tracks of the two or more noncontiguous servo tracks having a center to center separation equal to M * P, wherein M for each pair of adjacent servo tracks may be any integer .gtoreq.2. The system may further include a head assembly having a single magnetoresistive read element tapped to provide at least (K+1) tapped servo read elements for use in reading servo information written to the servo band; wherein K is equal to the integer M for the pair of adjacent servo tracks having the greatest center to center separation and a repositioning assembly for repositioning the head assembly as a function of the servo information. Further, the center to center separation between pairs of adjacent servo tracks of the two or more noncontiguous servo tracks may be different for at least two pairs of adjacent servo tracks. A servo tracking data recording tape with two or more noncontiguous servo tracks having center to center separation between pairs of adjacent servo tracks being different for at least two pairs of adjacent servo tracks is also provided along with a method for servo track identification for use therewith. Further, track read/write head assemblies wherein the servo read and write elements are along the same gap lines as the data read and write assemblies, respectively, are provided.
摘要翻译：带式伺服系统包括具有轨道带的磁带，该轨道包括至少一个具有多个磁道间距P的数据磁道的数据带和专用于伺服信息的伺服带。伺服带包括两个或更多个不连续的伺服轨道，其中两个或更多个不连续的伺服轨道的每对相邻伺服轨道具有等于M * P的中心到中心间隔，其中每对相邻伺服轨道的M可以是任何整数 > / = 2。该系统还可以包括具有单个磁阻读取元件的头组件，其被抽头以提供用于读取写入伺服带的伺服信息的至少（K + 1）个抽头伺服读取元件; 其中K等于具有最大中心到中心分离的一对相邻伺服轨道的整数M.以及用于根据伺服信息重新定位头部组件的重新定位组件。此外，对于至少两对相邻的伺服磁道，两个或更多个不连续伺服磁道的相邻伺服磁道对之间的中心到中心分离可以是不同的。具有两个或更多个不连续伺服磁道的伺服跟踪数据记录磁带还提供有用于至少两对相邻伺服磁道的至少两对相邻伺服磁道不同的中心到中心分离的伺服磁道。此外，跟踪读/写头组件，其中伺服读和写元件分别与数据读写组件沿着相同的间隙线。

3. 发明授权

US5339202A Method and apparatus for amplitude compensated write equalization 失效
标题翻译：用于幅度补偿写入均衡的方法和装置
公开(公告)号：US5339202A
公开(公告)日：1994-08-16
申请号：US37285
申请日：1993-03-26
申请人： John E. Heinz , Michael E. Hamerly , Richard W. Molstad , Theodore A. Schwarz , Robert J. Youngquist
发明人： John E. Heinz , Michael E. Hamerly , Richard W. Molstad , Theodore A. Schwarz , Robert J. Youngquist
IPC分类号： G11B5/035 , G11B5/09 , G11B20/10
CPC分类号： G11B20/10194 , G11B5/035 , G11B5/09
摘要： An adjustable write-equalized recording circuit for recording data onto a magnetic tape. The circuit variably adjusts the amplitude of write-equalization pulses relative to the data waveform by an amount that can be either preset or determined during operation.
摘要翻译：一种用于将数据记录到磁带上的可调写入均衡记录电路。电路可以相对于数据波形可变地调整写入均衡脉冲的幅度，其量可以在操作期间预先设定或确定。

4. 发明授权

US5311385A Magnetoresistive head with integrated bias and magnetic shield layer 失效
标题翻译：具有集成偏置和磁屏蔽层的磁阻头
公开(公告)号：US5311385A
公开(公告)日：1994-05-10
申请号：US809678
申请日：1991-12-18
申请人： Theodore A. Schwarz , Peter G. Bischoff , Chak M. Leung , Johnny C. Chen , Pradeep Thayamballi
发明人： Theodore A. Schwarz , Peter G. Bischoff , Chak M. Leung , Johnny C. Chen , Pradeep Thayamballi
IPC分类号： G11B5/39
CPC分类号： G11B5/3912 , G11B5/3961
摘要： A thin-film magnetoresistive playback head having films providing magnetic shielding and magnetic bias. At least one of the magnetic shield layers is also conductive so that the functions of shielding and biasing are combined. Preferably, both shield layers are conductive. A multiple element channel head is disclosed in which the magnetic/conductive layers extend in series from one transducer section to the next, allowing a single bias current to bias all of the sections.
摘要翻译：具有提供磁屏蔽和磁偏置的膜的薄膜磁阻重放头。磁屏蔽层中的至少一个也是导电的，使得屏蔽和偏置的功能被组合。优选地，两个屏蔽层是导电的。公开了一种多元件通道头，其中磁/导电层从一个换能器部分串联延伸到下一个，允许单个偏置电流偏置所有部分。

5. 发明授权

US4255772A Read/write magnetic head assembly with magnetoresistive sensor 失效
标题翻译：用磁阻传感器读/写磁头组件
公开(公告)号：US4255772A
公开(公告)日：1981-03-10
申请号：US53165
申请日：1979-06-29
申请人： Henry S. Perez , Theodore A. Schwarz
发明人： Henry S. Perez , Theodore A. Schwarz
IPC分类号： G11B5/31 , G11B5/39 , G11B5/12 , G11B5/30
CPC分类号： G11B5/3967 , G11B5/313
摘要： A thin film magnetic head assembly incorporates a nonconductive magnetic substrate which serves as a first pole piece and a thin film magnetic layer for the second pole piece. A magnetoresistive (MR) element is disposed between the pole pieces. During the write mode, the MR element serves as a partial write turn to enhance the write signal current applied to a conductor means. During the read mode, the conductor means serves as a magnetic shield, and the transducing gap is effectively narrowed.
摘要翻译：薄膜磁头组件包括用作第二极靴的非导电磁性衬底和用于第二极靴的薄膜磁性层。磁阻（MR）元件设置在极片之间。在写入模式期间，MR元件用作部分写入电平，以增强施加到导体装置的写入信号电流。在读取模式期间，导体装置用作磁屏蔽，并且换能间隙被有效地变窄。

6. 发明授权

US07393066B2 Servo systems, servo heads, servo patterns for data storage especially for reading, writing, and recording in magnetic recording tape 失效
公开(公告)号：US07393066B2
公开(公告)日：2008-07-01
申请号：US11510941
申请日：2006-08-28
申请人： Matthew P. Dugas , Theodore A. Schwarz , Gregory L. Wagner
发明人： Matthew P. Dugas , Theodore A. Schwarz , Gregory L. Wagner
IPC分类号： G11B5/584 , G11B21/02
CPC分类号： G11B5/00813 , G11B5/29 , G11B5/584 , Y10T29/49032 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052 , Y10T29/4906 , Y10T29/49128
摘要： Methods and systems for data recording and reading for increasing overall tape data storage density, especially for data written in azimuth style. The principles of the invention provide servo formats and systems that allow accurate on track guidance for higher density applications and that are less sensitive to off track error. Preferred embodiments of the invention offer servo formats and systems of the invention that allows positive track and group identification at the beginning, end, and optionally periodically along the length of a tape.

7. 发明授权

US07391587B2 Servo systems, servo heads, servo patterns for data storage especially for reading, writing, and recording in magnetic recording tape 失效
标题翻译：伺服系统，伺服头，用于数据存储的伺服模式，特别用于磁记录磁带中的读，写和记录
公开(公告)号：US07391587B2
公开(公告)日：2008-06-24
申请号：US11510940
申请日：2006-08-28
申请人： Matthew P. Dugas , Theodore A. Schwarz , Gregory L. Wagner
发明人： Matthew P. Dugas , Theodore A. Schwarz , Gregory L. Wagner
IPC分类号： G11B5/584 , G11B21/02
CPC分类号： G11B5/00813 , G11B5/29 , G11B5/584 , Y10T29/49032 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052 , Y10T29/4906 , Y10T29/49128
摘要： Methods and systems for data recording and reading for increasing overall tape data storage density, especially for data written in azimuth style. The principles of the invention provide servo formats and systems that allow accurate on track guidance for higher density applications and that are less sensitive to off track error. Preferred embodiments of the invention offer servo formats and systems of the invention that allows positive track and group identification at the beginning, end, and optionally periodically along the length of a tape.
摘要翻译：用于数据记录和读取的方法和系统，用于提高整个磁带数据存储密度，特别是对于以方位角写入的数据。本发明的原理提供伺服格式和系统，其允许针对较高密度应用的准确的跟踪引导并且对偏离轨道误差较不敏感。本发明的优选实施例提供本发明的伺服格式和系统，其允许沿着磁带的长度在开始，结束和可选地周期性地进行正轨迹和组识别。

8. 发明授权

US07283317B2 Apparatuses and methods for pre-erasing during manufacture of magnetic tape 失效
标题翻译：在制造磁带期间预擦除的装置和方法
公开(公告)号：US07283317B2
公开(公告)日：2007-10-16
申请号：US10768719
申请日：2004-01-30
申请人： Matthew P. Dugas , Theodore A. Schwarz
发明人： Matthew P. Dugas , Theodore A. Schwarz
IPC分类号： G11B5/09 , G11B15/18
CPC分类号： G11B5/00813
摘要： The present invention relates to direct current (“DC”) pre-erasing servo channels of a magnetic tape prior to writing servo data in a servo channel. The present invention particularly relates to those servo recordings which were written with a uni-polar current waveform. The DC pre-erase is performed using a uni-polar direct current of a polarity that is opposite to the polarity of the direct current used to write the servo data. This pre-erase may be done with one or more heads. Also, as will be described, the pre-erase of a servo channel and writing to a servo channel may be done by making two passes over a single head or by using two or more heads to perform both steps. Also, it is within the scope of the present invention to have the heads mounted on a single mount or have the heads on separate mounts and on separate tape decks.
摘要翻译：本发明涉及在伺服信道中写入伺服数据之前磁带的直流（“DC”）预擦除伺服通道。本发明特别涉及用单极电流波形写入的那些伺服记录。使用与用于写入伺服数据的直流电的极性相反的极性的单极直流电进行直流预擦除。这种预擦除可以用一个或多个头完成。此外，如将要描述的那样，可以通过在单个头上进行两次通过或者通过使用两个或更多个头执行两个步骤来完成对伺服信道的预擦除和对伺服信道的写入。此外，将头部安装在单个安装座上或将头部安装在单独的安装件上以及在单独的磁带机上也在本发明的范围内。

9. 发明授权

US06330123B1 Head assembly having a single pass servo writer 有权
标题翻译：头组件具有单程伺服写入器
公开(公告)号：US06330123B1
公开(公告)日：2001-12-11
申请号：US09575327
申请日：2000-05-19
申请人： Theodore A. Schwarz , Robert J. Youngquist , Hung T. Tran
发明人： Theodore A. Schwarz , Robert J. Youngquist , Hung T. Tran
IPC分类号： G11B509
CPC分类号： G11B5/584
摘要： A tape servo system includes tape having bands of tracks including at least one data band having a plurality of data tracks of track pitch P and a servo band dedicated for servo information. The servo band includes two or more noncontiguous servo tracks with each pair of adjacent servo tracks of the two or more noncontiguous servo tracks having a center to center separation equal to M*P, wherein M for each pair of adjacent servo tracks may be any integer≧2. The system may further include a head assembly having a single magnetoresistive read element tapped to provide at least (K+1) tapped servo read elements for use in reading servo information written to the servo band; wherein K is equal to the integer M for the pair of adjacent servo tracks having the greatest center to center separation and a repositioning assembly for repositioning the head assembly as a function of the servo information. Further, the center to center separation between pairs of adjacent servo tracks of the two or more noncontiguous servo tracks may be different for at least two pairs of adjacent servo tracks. A servo tracking data recording tape with two or more noncontiguous servo tracks having center to center separation between pairs of adjacent servo tracks being different for at least two pairs of adjacent servo tracks is also provided along with a method for servo track identification for use therewith. Further, track read/write head assemblies wherein the servo read and write elements are along the same gap lines as the data read and write assemblies, respectively, are provided.
摘要翻译：带式伺服系统包括具有轨道带的磁带，该轨道包括至少一个具有多个磁道间距P的数据磁道的数据带和专用于伺服信息的伺服带。伺服带包括两个或更多个不连续的伺服轨道，其中两个或更多个不连续的伺服轨道的每对相邻伺服轨道具有等于M * P的中心到中心间隔，其中每对相邻伺服轨道的M可以是任何整数 > = 2。该系统还可以包括具有单个磁阻读取元件的头组件，其被抽头以提供用于读取写入伺服带的伺服信息的至少（K + 1）个抽头伺服读取元件; 其中K等于具有最大中心到中心分离的一对相邻伺服轨道的整数M.以及用于根据伺服信息重新定位头部组件的重新定位组件。此外，对于至少两对相邻的伺服磁道，两个或更多个不连续伺服磁道的相邻伺服磁道对之间的中心到中心分离可以是不同的。具有两个或更多个不连续伺服磁道的伺服跟踪数据记录磁带还提供有用于至少两对相邻伺服磁道的至少两对相邻伺服磁道不同的中心到中心分离的伺服磁道。此外，提供跟踪读/写头组件，其中伺服读和写元件分别与数据读写组件沿着相同的间隙线。

10. 发明授权

US6122147A Negative pressure head contour in a linear tape recording system with tape deforming cavity 有权
标题翻译：具有带变形腔的线性带记录系统中的负压头轮廓
公开(公告)号：US6122147A
公开(公告)日：2000-09-19
申请号：US225281
申请日：1999-01-05
申请人： A. Saeed Fahimi , Theodore A. Schwarz
发明人： A. Saeed Fahimi , Theodore A. Schwarz
IPC分类号： G11B5/53 , G11B5/187 , G11B5/60 , G11B15/60
CPC分类号： G11B5/60 , G11B5/1871 , G11B5/255 , G11B5/3106
摘要： A magnetic head assembly in a linear tape system having an interface region having a substantially flat region with a substantially square leading edge and at least one cavity in the flat region. The cavity has a depth of about 0.5 micrometers to about 20 micrometers. At least one read-write element is located on the flat region adjacent to the cavity. As a magnetic tape traversing the interface region, a sub-ambient condition is generated. The magnetic tape is bent or otherwise deformed as it passes over the cavity, thereby increase tape stability at the interface with the read-write elements. A magnetic tape system for recording, reproducing and/or erasing magnetic information in a linear tape system or for servo-writing magnetic tapes is also disclosed.
摘要翻译：一种线性带系统中的磁头组件，其具有界面区域，该界面区域具有基本上平坦的区域，具有基本上正方形的前缘和在平坦区域中的至少一个空腔。空腔具有约0.5微米至约20微米的深度。至少一个读写元件位于与腔相邻的平坦区域上。作为穿过界面区域的磁带，产生副环境条件。磁带在其通过空腔时弯曲或变形，从而在与读写元件的界面处增加磁带的稳定性。还公开了一种用于在线性带系统中记录，再现和/或擦除磁信息或用于伺服写入磁带的磁带系统。

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