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14 条记录 (耗时 0.044 秒)

    Laser power-drive circuit having a scaling DAC supplying a scaled reference signal to a plurality of scaled DAC's that supply a plurality of scaled output signals
    1.
    发明授权
    Laser power-drive circuit having a scaling DAC supplying a scaled reference signal to a plurality of scaled DAC's that supply a plurality of scaled output signals 失效
    具有缩放DAC的激光功率驱动电路为缩放的DAC提供缩放的参考信号，所述缩放的DAC提供多个缩放的输出信号

    公开(公告)号：US5640381A

    公开(公告)日：1997-06-17

    申请号：US612993

    申请日：1996-03-08

    申请人： David Ernest Call ,  Stephen J. Hrinya ,  Jerry Elden Hurst, Jr. ,  Glen Alan Jaquette ,  Anthony Juliana, Jr.

    发明人： David Ernest Call ,  Stephen J. Hrinya ,  Jerry Elden Hurst, Jr. ,  Glen Alan Jaquette ,  Anthony Juliana, Jr.

    IPC分类号： G11B7/0045 ,  G11B7/125 ,  G11B20/18 ,  H01S5/0683 ,  G11B7/00

    CPC分类号： G11B7/126 ,  H01S5/0683 ,  G11B20/182 ,  G11B7/0045

    摘要： An optical disk recorder employs laser drive signals having diverse current or power levels. A scaling digital-analog-converter (DAC) supplies a scaled reference signal to a plurality of scaled DACs. The scaled DACs supply the diverse laser drive signals. Calibrating the scaling DAC calibrates the scaled DACs. A base array of DACs include not only the scaling DAC but a plurality of base array DACs. Such base array DACs control reading operations as well as supplying a threshold current. The threshold current is that laser drive signal current level below which laser 25 does not emit a laser beam. During writing, the CUT current is added to the laser drive currents supplied by the scaled DACs. A desired CUT current is determined by calculating a slope of the laser drive current to emission of radiation. Then the slope is extrapolated to a zero emission point below which no coherent emission of radiation occurs.

    摘要翻译： 光盘记录器采用具有不同电流或功率电平的激光驱动信号。 缩放数字模拟转换器（DAC）将缩放的参考信号提供给多个缩放的DAC。 缩放的DAC提供多种激光驱动信号。 校准缩放DAC校准缩放的DAC。 DAC的基本阵列不仅包括缩放DAC，而且包括多个基本阵列DAC。 这种基本阵列DAC控制读取操作以及提供阈值电流。 阈值电流是激光器驱动信号电流水平低于激光器25不发射激光束。 在写入期间，CUT电流被添加到由缩放DAC提供的激光驱动电流。 通过计算激光驱动电流对发射辐射的斜率来确定期望的CUT电流。 然后将斜率外推到零点以下，不超过辐射发生相干发射。

    Voltage modulated drop-on-demand ink jet method and apparatus
    2.
    发明授权
    Voltage modulated drop-on-demand ink jet method and apparatus 失效
    电压调制按需喷墨方法和装置

    公开(公告)号：US4266232A

    公开(公告)日：1981-05-05

    申请号：US53468

    申请日：1979-06-29

    申请人： Anthony Juliana, Jr. ,  Richard W. Koepcke ,  Ross N. Mills ,  Frank E. Talke

    发明人： Anthony Juliana, Jr. ,  Richard W. Koepcke ,  Ross N. Mills ,  Frank E. Talke

    IPC分类号： B41J2/045 ,  B41J2/055 ,  G06K15/10 ,  G01D15/18

    CPC分类号： B41J2/04581 ,  B41J2/04588 ,  B41J2/04596 ,  B41J2002/14387

    摘要： A drop-on-demand ink jet printer in which the print head includes a cavity having a nozzle portion at one end and a transducer mounted to contract a wall portion of the cavity when energized by a suitable voltage drive pulse. The drive pulses are produced at a predetermined rate but at a selectively controlled amplitude in response to the print data. In cases where no drop is required to print the data, the drive pulse is at a lower amplitude than the threshold voltage level, and for the first drop to be formed following a time at which no drop was formed, the amplitude of the drive pulse is greater than the threshold voltage level. At steady state operation of producing drops in sequence, the amplitude of the drive pulses equals the threshold voltage level.

    摘要翻译： 一种按需喷墨打印机，其中打印头包括在一端具有喷嘴部分的空腔和安装成在通过合适的电压驱动脉冲激励时收缩空腔的壁部分的换能器。 驱动脉冲以预定速率产生，但是响应于打印数据以选择性控制的幅度产生。 在不需要打印数据的情况下，驱动脉冲处于比阈值电压电平更低的幅度，并且在没有形成液滴的时间之后形成第一液滴，驱动脉冲的幅度 大于阈值电压电平。 在依次产生液滴的稳态运行中，驱动脉冲的幅度等于阈值电压电平。

    Surface inspection tool
    3.
    发明授权
    Surface inspection tool 失效
    表面检测工具

    公开(公告)号：US06624884B1

    公开(公告)日：2003-09-23

    申请号：US08840351

    申请日：1997-04-28

    申请人： Wayne Isami Imaino ,  Anthony Juliana, Jr. ,  Milton Russell Latta ,  Charles H. Lee ,  Wai Cheung Leung ,  Hal J. Rosen ,  Steven Meeks ,  Richard Sonningfeld

    发明人： Wayne Isami Imaino ,  Anthony Juliana, Jr. ,  Milton Russell Latta ,  Charles H. Lee ,  Wai Cheung Leung ,  Hal J. Rosen ,  Steven Meeks ,  Richard Sonningfeld

    IPC分类号： G01N2188

    CPC分类号： G01N21/88

    摘要： 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. In an embodiment of the invention, light reflected from the surface at an angle slightly offset from perpendicular is routed through a telecentric lens 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. A median filter and derivative analysis can be applied to the pixel data to detect deviations indicating defects. An optional calibration system periodically reflects the scanning beam back to a detector to form a reference signal for use in absolute reflectivity measurements.

    摘要翻译： 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。 在本发明的一个实施例中，从表面以从垂直方向稍微偏离的角度反射的光通过远心透镜被路由到检测器，该检测器将反射光束的强度转换为模拟信号。 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。 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。 可选的校准系统周期性地将扫描光束反射回检测器以形成用于绝对反射率测量的参考信号。

    Glass substrate inspection tool having a telecentric lens assembly
    4.
    发明授权
    Glass substrate inspection tool having a telecentric lens assembly 失效
    具有远心透镜组件的玻璃基板检查工具

    公开(公告)号：US5945685A

    公开(公告)日：1999-08-31

    申请号：US974272

    申请日：1997-11-19

    申请人： Wayne Isami Imaino ,  Anthony Juliana, Jr. ,  Milton Russell Latta ,  Charles Cheng-Hsing Lee ,  Wai Cheung Leung ,  Hal Jervis Rosen

    发明人： Wayne Isami Imaino ,  Anthony Juliana, Jr. ,  Milton Russell Latta ,  Charles Cheng-Hsing Lee ,  Wai Cheung Leung ,  Hal Jervis Rosen

    IPC分类号： G01N21/94 ,  G01N21/86

    CPC分类号： G01N21/94

    摘要： A glass disk substrate inspection tool uses a polarized laser beam that is directed to the first surface of the disk substrate at Brewster's angle and is then transmitted through the disk substrate to a light detector that generates a signal representative of the intensity of the light received. Because the light polarized parallel to the plane of incidence, i.e., the plane formed by the line of the incident beam and a line perpendicular to the surface of the disk substrate, is completely transmitted, there is no surface reflection at either the first or second surfaces of the disk substrate. The polarized beam is directed by a first rotating scanner to the input of a telecentric lens assembly that provides an output beam parallel to its optical axis as the beam is being scanned. The beam is then directed by a first fixed mirror to strike the first surface of the disk substrate at Brewster's angle as the beam is scanned along a line across the first disk surface. The beam is then transmitted through the substrate to the second surface of the disk substrate to a second fixed mirror that redirects the beam to a second telecentric lens assembly. The light passes through the second telecentric lens assembly in the direction reverse to the direction of passage through the first telecentric lens assembly so that the output beam from the second telecentric lens assembly is directed to its focal point. This focal point coincides with the point of contact of a second rotating scanner synchronized for rotation with the first scanner. The second scanner directs the transmitted beam to the light detector.

    摘要翻译： 玻璃盘基板检查工具使用以布鲁斯特角度指向盘基片的第一表面的偏振激光束，然后通过盘基片传输到产生表示所接收光的强度的信号的光检测器。 因为平行于入射平面的光，即由入射光束的线形成的平面和垂直于盘基片的表面的一条线被完全透射，所以在第一或第二处没有表面反射 盘基片的表面。 偏振光束由第一旋转扫描器引导到远心透镜组件的输入端，当远射镜被扫描时，其提供平行于其光轴的输出光束。 然后，当沿着穿过第一盘表面的线扫描光束时，光束由第一固定镜引导以以布鲁斯特角冲击盘基片的第一表面。 然后将光束通过基板传送到盘基板的第二表面，到第二固定反射镜，其将光束重定向到第二远心透镜组件。 光穿过第二远心透镜组件的方向与穿过第一远心透镜组件的通过方向相反，使得来自第二远心透镜组件的输出光束被引导到其焦点。 该焦点与第一旋转扫描器的接触点重合，该第二旋转扫描器与第一扫描器旋转同步。 第二扫描器将透射光束引导到光检测器。

    Surface inspection tool
    5.
    发明授权
    Surface inspection tool 失效
    表面检测工具

    公开(公告)号：US5917589A

    公开(公告)日：1999-06-29

    申请号：US840339

    申请日：1997-04-28

    申请人： Wayne Isami Imaino ,  Anthony Juliana, Jr. ,  Milton Russell Latta ,  Charles H. Lee ,  Wai Cheung Leung ,  Hal J. Rosen

    发明人： Wayne Isami Imaino ,  Anthony Juliana, Jr. ,  Milton Russell Latta ,  Charles H. Lee ,  Wai Cheung Leung ,  Hal J. Rosen

    IPC分类号： G01N21/94 ,  G01N21/88

    CPC分类号： G01N21/94

    摘要： 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.

    摘要翻译： 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。

    Surface inspection tool
    6.
    发明授权
    Surface inspection tool 失效
    表面检测工具

    公开(公告)号：US5867261A

    公开(公告)日：1999-02-02

    申请号：US840352

    申请日：1997-04-28

    申请人： Wayne Isami Imaino ,  Anthony Juliana, Jr. ,  Milton Russell Latta ,  Charles H. Lee ,  Wai Cheung Leung ,  Hal J. Rosen

    发明人： Wayne Isami Imaino ,  Anthony Juliana, Jr. ,  Milton Russell Latta ,  Charles H. Lee ,  Wai Cheung Leung ,  Hal J. Rosen

    IPC分类号： G01N21/95 ,  G01N21/88

    CPC分类号： G01N21/9506

    摘要： 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.

    摘要翻译： 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。

    Surface inspection tool
    8.
    发明授权
    Surface inspection tool 失效
    表面检测工具

    公开(公告)号：US5969370A

    公开(公告)日：1999-10-19

    申请号：US840358

    申请日：1997-04-28

    申请人： Wayne Isami Imaino ,  Anthony Juliana, Jr. ,  Milton Russell Latta ,  Charles H. Lee ,  Wai Cheung Leung ,  Hal J. Rosen

    发明人： Wayne Isami Imaino ,  Anthony Juliana, Jr. ,  Milton Russell Latta ,  Charles H. Lee ,  Wai Cheung Leung ,  Hal J. Rosen

    IPC分类号： G01N21/88 ,  G11B7/0037 ,  G11B7/26

    CPC分类号： G01N21/88 ,  G11B7/00375 ,  G11B7/26

    摘要： 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. In one embodiment of the invention, a disk is moved into an inspection subcompartment between a pair of air knives which blow partially ionized air onto the planar sides of the disk to remove loose particles adhering thereto. After the disk moves through the air knife streams, the two laser beams scan the two sides of the disk. Preferably the scan occurs after the air knives have been turned off and as the disk moves out of the inspection subcompartment. The subcompartment may optionally have an air source which forces air to flow out of the subcompartment to aid in maintaining a clean environment for inspection.

    摘要翻译： 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。 在本发明的一个实施例中，盘被移动到一对气刀之间的检查子舱中，所述气刀将部分电离空气吹送到盘的平面侧以除去附着在其上的松散颗粒。 在磁盘移动通过气刀流之后，两个激光束扫描磁盘的两侧。 优选地，扫描发生在气刀已经关闭之后并且当盘移出检查子舱室时。 子舱可以可选地具有迫使空气流出子舱的空气源，以帮助保持清洁的环境以供检查。

    Surface inspection tool
    9.
    发明授权
    Surface inspection tool 失效
    表面检测工具

    公开(公告)号：US5933230A

    公开(公告)日：1999-08-03

    申请号：US840354

    申请日：1997-04-28

    申请人： Wayne Isami Imaino ,  Anthony Juliana, Jr. ,  Milton Russell Latta ,  Charles H. Lee ,  Wai Cheung Leung ,  Hal J. Rosen

    发明人： Wayne Isami Imaino ,  Anthony Juliana, Jr. ,  Milton Russell Latta ,  Charles H. Lee ,  Wai Cheung Leung ,  Hal J. Rosen

    IPC分类号： G01N21/88 ,  G01N21/94 ,  G01N21/00

    CPC分类号： G01N21/94 ,  G01N21/8806

    摘要： 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 choice of a polygon scanner is preferred, but other scanning means such as a galvonometer mirror could be used. A separate polygon scanner is used for each side of the disk. The polygons are arranged in a common plane, but rotate in opposite directions to reduce the inteference which might otherwise result when the beams pass through the central hole in the disk and impinge on the detection channel for the other side. Preferably the rotation of the polygons is synchonized and angularly offset so that the two beams are synchonized and offset. The rotating polygons may conveniently be included in a system which scans each of the two laser beams through a telecentric lens assembly onto the surface and which routes the reflected light which passes back through the telecentric lens and is reflected from the polygons to the detection component.

    摘要翻译： 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。 多边形扫描器的选择是优选的，但是可以使用诸如电流计镜之类的其它扫描装置。 磁盘的每一侧都使用单独的多边形扫描器。 多边形布置在公共平面中，但是沿相反方向旋转以减小当光束通过盘中的中心孔并且撞击到另一侧的检测通道时可能导致的干涉。 优选地，多边形的旋转被同步并且成角度地偏移，使得两个光束被同步和偏移。 旋转的多边形可以方便地包括在将两个激光束中的每一个通过远心透镜组件扫描到表面上并且将穿过远心透镜返回的反射光路由并从多边形反射到检测部件的系统中。