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    • 33. 发明授权
      US08385162B2 Shingled-writing thermal assistance recording (TAR) disk drive with avoidance of adjacent track erasure from a wide-area heater 有权
    • Shingled-writing thermal assistance recording (TAR) disk drive with avoidance of adjacent track erasure from a wide-area heater
    • 带有写字的热辅助记录（TAR）磁盘驱动器，避免了广域加热器的相邻轨道擦除
    • US08385162B2
    • 2013-02-26
    • US13192437
    • 2011-07-27
    • Hal J. Rosen , Barry Cushing Stipe , Petrus Antonius VanDerHeijden
    • Hal J. Rosen , Barry Cushing Stipe , Petrus Antonius VanDerHeijden
    • G11B11/00
    • G11B5/02 , G11B5/012 , G11B5/314 , G11B5/6088 , G11B2005/0021
    • A thermally-assisted recording (TAR) disk drive that uses “shingled” recording and a rectangular waveguide as a “wide-area” heat source includes a controller that counts the number of writes to each annular band of data tracks. The wide-area heater generates a heat spot that extends across multiple tracks, so that each time an annular band is written, the data in tracks in adjacent bands are also heated. Because the bands are written independently, the number of passes of the heat spot and thereby the number of times the data tracks in a band are exposed to elevated temperatures without being re-written is related to the number of re-writes of the adjacent bands. The number of writes to each band is counted and when that count reaches a predetermined threshold value, one or more tracks in an adjacent band are re-written to avoid reaching an unacceptable level of magnetization decay in the tracks of the adjacent band.
    • 使用带有遮蔽的记录和矩形波导作为广域热源的热辅助记录（TAR）磁盘驱动器包括对数据轨道的每个环形带的写入次数进行计数的控制器。 广域加热器产生一个延伸穿过多个轨迹的热点，因此每次写入一个环形带时，相邻带中轨道中的数据也被加热。 由于频带是独立写入的，所以热点的通过次数以及频带中数据轨迹的次数暴露于升高的温度而不被重新写入与相邻频带的重写次数有关 。 对每个频带的写入次数进行计数，并且当该计数达到预定阈值时，重新写入相邻频带中的一个或多个磁道，以避免在相邻频带的磁道中达到不可接受的磁化衰减水平。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
    • 35. 发明授权
      US5917589A Surface inspection tool 失效
    • Surface inspection tool
    • 表面检测工具
    • US5917589A
    • 1999-06-29
    • US840339
    • 1997-04-28
    • Wayne Isami Imaino , Anthony Juliana, Jr. , Milton Russell Latta , Charles H. Lee , Wai Cheung Leung , Hal J. Rosen
    • Wayne Isami Imaino , Anthony Juliana, Jr. , Milton Russell Latta , Charles H. Lee , Wai Cheung Leung , Hal J. Rosen
    • G01N21/94 , G01N21/88
    • G01N21/94
    • A laser based inspection tool (LIT) for inspecting planar surfaces is described. In a preferred embodiment the LIT can simultaneously inspect both planar surfaces of disks for use in disk drives. The LIT uses a mechanical lifter which moves the disk through the laser scan lines (i.e. perpendicular to the scan lines) to allow the entire surface on each side of the disk to be scanned. The light reflected from the surface is routed to a detector which converts the intensity of the reflected beam into an analog signal. The analog signal is sampled and digitized to generate pixel data. A data acquisition system sequentially stores the pixel data in a buffer. The edges of the planar surface in the pixel data are determined for each scan line while data acquisition is in progress. A mask is applied to direct the defect detection only to meaningful areas of the disk while data acquisition is in progress. A median filter and derivative analysis can be applied to the pixel data to detect deviations indicating defects.
    • 描述了一种用于检查平面的激光检测工具（LIT）。 在优选实施例中，LIT可以同时检查用于磁盘驱动器的磁盘的两个平面表面。 LIT使用机械升降器，其将盘移动通过激光扫描线（即垂直于扫描线），以允许扫描盘的每一侧上的整个表面。 从表面反射的光被路由到检测器，其将反射光束的强度转换成模拟信号。 模拟信号被采样并数字化以产生像素数据。 数据采集​​系统将像素数据顺序存储在缓冲器中。 在进行数据采集的同时，为每个扫描行确定像素数据中的平面的边缘。 应用掩码将缺陷检测仅指向磁盘的有意义的区域，同时数据采集正在进行。 中值滤波器和导数分析可以应用于像素数据，以检测指示缺陷的偏差。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 36. 发明授权
      US5867261A Surface inspection tool 失效
    • Surface inspection tool
    • 表面检测工具
    • US5867261A
    • 1999-02-02
    • US840352
    • 1997-04-28
    • Wayne Isami Imaino , Anthony Juliana, Jr. , Milton Russell Latta , Charles H. Lee , Wai Cheung Leung , Hal J. Rosen
    • Wayne Isami Imaino , Anthony Juliana, Jr. , Milton Russell Latta , Charles H. Lee , Wai Cheung Leung , Hal J. Rosen
    • G01N21/95 , G01N21/88
    • G01N21/9506
    • A laser based inspection tool (LIT) for inspecting planar surfaces is described. In a preferred embodiment the LIT can simultaneously inspect both planar surfaces of disks for use in disk drives. The LIT uses a mechanical lifter which moves the disk through the laser scan lines (i.e. perpendicular to the scan lines) to allow the entire surface on each side of the disk to be scanned. The light reflected from the surface is routed to a detector which converts the intensity of the reflected beam into an analog signal. The analog signal is sampled and digitized to generate pixel data. A data acquisition system sequentially stores the pixel data in a buffer. The edges of the planar surface in the pixel data are determined for each scan line while data acquisition is in progress. A mask is applied to direct the defect detection only to meaningful areas of the disk while data acquisition is in progress. A median filter and derivative analysis can be applied to the pixel data to detect deviations indicating defects. An optional calibration mirror is taught which is positioned to reflect substantially all of the incident beam during a segment of the scan line as the reflected calibration beam which is converted to an analog signal, sampled and digitized similarly to the reflected beam from the surface being inspected. By comparing the intensity of the calibration beam to the reflected beam the reflectivity of the surface can be measured.
    • 描述了一种用于检查平面的激光检测工具（LIT）。 在优选实施例中，LIT可以同时检查用于磁盘驱动器的磁盘的两个平面表面。 LIT使用机械升降器，其将盘移动通过激光扫描线（即垂直于扫描线），以允许扫描盘的每一侧上的整个表面。 从表面反射的光被路由到检测器，其将反射光束的强度转换成模拟信号。 模拟信号被采样并数字化以产生像素数据。 数据采集​​系统将像素数据顺序存储在缓冲器中。 在进行数据采集的同时，为每个扫描行确定像素数据中的平面的边缘。 应用掩码将缺陷检测仅指向磁盘的有意义的区域，同时数据采集正在进行。 中值滤波器和导数分析可以应用于像素数据，以检测指示缺陷的偏差。 可选的校准反射镜被定位成在扫描线的一段期间基本上反射所有入射光束，作为被反射的校准光束，该反射校准光束被转换成模拟信号，与来自被检测表面的反射光束类似地进行采样和数字化 。 通过比较校准光束与反射光束的强度，可以测量表面的反射率。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 37. 发明授权
      US5625609A Multiple data layer optical disk drive system with fixed aberration correction and optimum interlayer spacing 失效
    • Multiple data layer optical disk drive system with fixed aberration correction and optimum interlayer spacing
    • 具有固定像差校正和最佳层间距的多数据层光盘驱动系统
    • US5625609A
    • 1997-04-29
    • US403166
    • 1995-03-13
    • Milton R. Latta , Hal J. Rosen , Kurt A. Rubin , Wade Wai-Chung Tang
    • Milton R. Latta , Hal J. Rosen , Kurt A. Rubin , Wade Wai-Chung Tang
    • G11B7/1378 , G11B7/00 , G11B7/005 , G11B7/24 , G11B7/252
    • G11B7/24 , G11B7/005 , G11B2007/0013
    • A multiple data layer optical disk drive system has fixed aberration correction and uses a disk with maximum interlayer spacing for reduced interlayer crosstalk. In one embodiment the multiple data layer disk has a substrate with a thickness that is reduced by approximately one-half the thickness of the spacer layer that separates the first and last data layers. The disk is designed to operate with a lens that has spherical aberration correction to compensate for the thickness of a conventional single data layer disk. This allows the disk drive to handle multiple data layer disks as well as to be backward compatible and thus handle conventional single data layer disks. The thickness of the substrate material plus one-half the thickness of the spacer layer material (which may have a different index of refraction than the substrate material) is equivalent, for purposes of spherical aberration correction, to the thickness of the substrate material used in the conventional single data layer disk. The focused spot with minimum spherical aberration is thus located at the middle of the spacer layer rather than on the first data layer. The spacer layer thickness is selected so that when the focused spot is located on either the first or last data layer there is some deliberately designed spherical aberration, although an amount that is acceptable. As a result the thickness of the spacer layer can be significantly increased to thereby reduce interlayer crosstalk. In another embodiment that substrate thickness and spacer layer thickness are selected and then the lens is corrected for spherical aberration corresponding to the thickness of substrate material plus one-half the thickness of spacer layer material.
    • 多数据层光盘驱动系统具有固定的像差校正，并且使用具有最大层间距的盘来减少层间串扰。 在一个实施例中，多数据层盘具有基板，其厚度减小了分隔第一和最后数据层的间隔层的厚度的大约二分之一。 该盘被设计成与具有球面像差校正的透镜一起工作以补偿常规单个数据层盘的厚度。 这允许磁盘驱动器处理多个数据层磁盘以及向后兼容，从而处理传统的单个数据层磁盘。 衬底材料的厚度加上间隔层材料的厚度的一半（与衬底材料相比可能具有不同的折射率）相当于用于球面像差校正的基底材料的厚度 传统的单数据层磁盘。 因此，具有最小球面像差的聚焦点位于间隔层的中间而不是位于第一数据层上。 选择间隔层厚度，使得当聚焦点位于第一或最后数据层上时，存在一些故意设计的球面像差，尽管可接受的量。 结果，间隔层的厚度可以显着增加，从而减少层间串扰。 在另一个实施例中，选择衬底厚度和间隔层厚度，然后针对与衬底材料的厚度加上间隔层材料的厚度的一半的球面像差校正透镜。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
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