公开(公告)号：US4589037A

公开(公告)日：1986-05-13

申请号：US713139

申请日：1985-03-18

申请人： Shen Jen ,  William J. Kabelac ,  Ian L. Sanders

发明人： Shen Jen ,  William J. Kabelac ,  Ian L. Sanders

IPC分类号： G11B5/596 ,  G11B21/10 ,  G11B5/55 ,  G11B5/56

CPC分类号： G11B5/59627

摘要： An improved magnetic recording disk drive, in particular a flexible disk drive, includes a head positioning servo system which utilizes servo information recorded on the disk by the disk drive. The servo information is located within one of the data sectors and is in the form of a pattern of radially spaced-apart segments, each segment overlapping a number of data tracks and comprising magnetic transitions which increase in frequency in the radial direction to provide a digital head position error signal (PES). A similar segment is located in each of the other data sectors around the perimeter of the disk to provide track profile information so that the head positioning system can compensate for disk runout and distortion. The disk drive includes means for eliminating the effect of the amplitude of the readback signal from the servo and profile segments on the head positioning system, thus assuring a reliable PES at all radial locations on the disk and allowing interchangeability of disks among disk drives.

摘要翻译： 改进的磁记录磁盘驱动器，特别是软盘驱动器，包括磁头定位伺服系统，其利用由磁盘驱动器记录在磁盘上的伺服信息。 伺服信息位于数据扇区之一内，并且呈径向间隔开的段的形式，每个段与数个数据轨道重叠，并且包括在径向方向上频率增加以提供数字 头部位置误差信号（PES）。 类似的片段位于围绕磁盘周边的其他数据扇区中的每一个中，以提供轨道轮廓信息，使得头部定位系统可以补偿盘的跳动和失真。 磁盘驱动器包括用于消除来自头部定位系统上的伺服和轮廓段的回读信号的幅度的影响的装置，从而确保在盘上的所有径向位置处的可靠的PES，并且允许盘驱动器之间的盘的可互换性。

公开(公告)号：US4598327A

公开(公告)日：1986-07-01

申请号：US749694

申请日：1985-06-28

申请人： Shen Jen ,  William J. Kabelac

发明人： Shen Jen ,  William J. Kabelac

IPC分类号： G11B5/596 ,  G11B21/10 ,  G11B5/56

CPC分类号： G11B5/59611 ,  G11B5/59633

摘要： An improved servo control system for data track following of the read/write head in a magnetic recording system uses a pattern of segments of servo information slanted across the data tracks. The time of flight of the servo segment from occurrence of a reference pulse until the peak servo signal is read by the head is an indication of the position of the head in a direction perpendicular to the desired track. This time is compared with the known time of flight if the head were precisely over the centerline of the desired track and the time difference is used to generate a control signal to position the head over the track centerline. In an embodiment where each segment is slanted across only one track, the reference pulse is the beginning of the servo signal and the time measurement is the number of fixed frequency magnetic transitions read by the head in the servo segment. When the system is used in flexible disk drives, the servo segments are written in one of the data sectors on the flexible disk by the user's disk drive.

摘要翻译： 用于在磁记录系统中的读/写磁头跟随的数据磁道的改进的伺服控制系统使用在数据磁道上倾斜的伺服信息的段的模式。 伺服段从参考脉冲的发生直到峰值伺服信号被头部读取的时间是头部在垂直于期望轨迹的方向上的位置的指示。 如果头部精确地位于所需轨道的中心线上，则将该时间与已知飞行时间进行比较，并且使用时间差来产生控制信号以将磁头定位在轨道中心线上。 在每个段仅跨越一个轨道倾斜的实施例中，参考脉冲是伺服信号的开始，并且时间测量是由伺服段中的磁头读取的固定频率磁转数的数量。 当系统用于软盘驱动器时，伺服段由用户的磁盘驱动器写入软盘中的数据扇区之一。

公开(公告)号：US07972438B2

公开(公告)日：2011-07-05

申请号：US11847128

申请日：2007-08-29

申请人： Yi-Ting Fei ,  Shen Jen ,  Bruce Chai

发明人： Yi-Ting Fei ,  Shen Jen ,  Bruce Chai

IPC分类号： C30B29/30

CPC分类号： G03F7/70958 ,  C30B15/00 ,  C30B29/22 ,  G02B1/02 ,  G03F7/70341

摘要： This invention is related to material for use as an ultraviolet (UV) optical element and particularly for use as a 193 nm immersion lens element. The material for use as a UV optical element includes a Lithium Magnesium Aluminate (LMAO) body. The specific compound for this application is the disordered lithium magnesium spinel, having the general composition of LixMg2(1−x)Al4+xO8 where x=0 to 1 as the high-index UV transparent material for immersion lithography. The LMAO body may include a disordered spinel, such as, for example, a single crystal that may be cubic in symmetry, optically isotropic, and having cation disorder within the structure to reduce the intrinsic birefringence (IBR). The LMAO body has certain desired material properties and may be readily made in relatively large sizes suitable for use as the UV optical element for photolithography.

摘要翻译： 本发明涉及用作紫外线（UV）光学元件并且特别用作193nm浸没透镜元件的材料。 用作UV光学元件的材料包括铝酸锂铝（LMAO）铝体。 该应用的具体化合物是具有LixMg2（1-x）Al4 + xO8的一般组成的无序的锂镁尖晶石，其中x = 0至1作为用于浸渍光刻的高折射率UV透明材料。 LMAO体可以包括无序尖晶石，例如可以是对称的立方体，光学各向同性的并且在结构内具有阳离子障碍以降低固有双折射（IBR）的单晶。 LMAO体具有一定的期望的材料性质，并且可以容易地制成适合用作光刻的UV光学元件的相对大的尺寸。

公开(公告)号：US20080055715A1

公开(公告)日：2008-03-06

申请号：US11847128

申请日：2007-08-29

申请人： Yi-Ting Fei ,  Shen Jen ,  Bruce Chai

发明人： Yi-Ting Fei ,  Shen Jen ,  Bruce Chai

IPC分类号： G03B27/54 ,  G03F1/00

CPC分类号： G03F7/70958 ,  C30B15/00 ,  C30B29/22 ,  G02B1/02 ,  G03F7/70341

摘要： This invention is related to material for use as an ultraviolet (UV) optical element and particularly for use as a 193 nm immersion lens element. The material for use as a UV optical element includes a Lithium Magnesium Aluminate (LMAO) body. The specific compound for this application is the disordered lithium magnesium spinel, having the general composition of LixMg2(1-x)Al4+xO8 where x=0 to 1 as the high-index UV transparent material for immersion lithography. The LMAO body may include a disordered spinel, such as, for example, a single crystal that may be cubic in symmetry, optically isotropic, and having cation disorder within the structure to reduce the intrinsic birefringence (IBR). The LMAO body has certain desired material properties and may be readily made in relatively large sizes suitable for use as the UV optical element for photolithography.

摘要翻译： 本发明涉及用作紫外线（UV）光学元件并且特别用作193nm浸没透镜元件的材料。 用作UV光学元件的材料包括铝酸锂铝（LMAO）铝体。 用于该应用的具体化合物是无序的锂镁尖晶石，具有一般组成为Li x2 Mg（2-x）Al 4+ x + 其中x = 0至1作为用于浸渍光刻的高折射率UV透明材料。 LMAO体可以包括无序尖晶石，例如可以是对称的立方体，光学各向同性的并且在结构内具有阳离子障碍以降低固有双折射（IBR）的单晶。 LMAO体具有一定的期望的材料性质，并且可以容易地制成适合用作光刻的UV光学元件的相对大的尺寸。

公开(公告)号：US06424081B1

公开(公告)日：2002-07-23

申请号：US09847955

申请日：2001-05-03

申请人： Bruce H. T. Chai ,  Mitch M. C. Chou ,  Haihong Qiu ,  Shen Jen

发明人： Bruce H. T. Chai ,  Mitch M. C. Chou ,  Haihong Qiu ,  Shen Jen

IPC分类号： H01L4104

CPC分类号： H03H9/64 ,  H03H9/02039 ,  H03H9/0259 ,  H03H9/56

摘要： An electronic device includes a piezoelectric layer formed of an ordered Langasite structure compound having the formula A3BC3D2E14, wherein A is calcium, B is niobium or tantalum, C is gallium, D is silicon, and E is oxygen. At least one electrode is connected to the piezoelectric layer and may be configured to define a device, such as a SAW resonator or filter, or a BAW resonator or filter. The ordered Langasite structure compound may have a substantially perfectly ordered structure.

公开(公告)号：US06455986B2

公开(公告)日：2002-09-24

申请号：US09848715

申请日：2001-05-03

申请人： Bruce H. T. Chai ,  Mitch M. C. Chou ,  Haihong Qiu ,  Shen Jen

发明人： Bruce H. T. Chai ,  Mitch M. C. Chou ,  Haihong Qiu ,  Shen Jen

IPC分类号： H01L4104

CPC分类号： H03H9/64 ,  H03H9/02039 ,  H03H9/0259 ,  H03H9/56

摘要： An electronic device includes a piezoelectric layer formed of an ordered Langasite structure compound having the formula A3BC3D2E14 wherein A is strontium, B is niobium, C is gallium, D is silicon, and E is oxygen. At least one electrode is connected to the piezoelectric layer and may be configured to define a device, such as a SAW resonator or filter, or a BAW resonator or filter. The ordered Langasite structure compound may have a substantially perfectly ordered structure.

摘要翻译： 一种电子器件包括由具有式A3BC3D2E14的有序兰格特结构化合物形成的压电层，其中A为锶，B为铌，C为镓，D为硅，E为氧。 至少一个电极连接到压电层，并且可以被配置为限定诸如SAW谐振器或滤波器或BAW谐振器或滤波器的器件。 有序的朗格列特结构化合物可以具有基本上完全有序的结构。