Coarse position sensor, and method for locating same, in an optical disk
drive
    1.
    发明授权
    Coarse position sensor, and method for locating same, in an optical disk drive 失效
    粗位置传感器及其在光盘驱动器中的定位方法

    公开(公告)号:US5553054A

    公开(公告)日:1996-09-03

    申请号:US384176

    申请日:1995-02-06

    IPC分类号: G11B21/08 G11B7/085 G11B7/00

    CPC分类号: G11B7/08588

    摘要: A coarse position sensor is provided for an optical recording device to generate a substantially linear coarse position signal, indicative of the position of a coarse carriage along the range of its travel, and which also is substantially immune to environmental and device variations. The sensor includes a light source mounted to a drive frame at one end of the range of travel, a position sensitive device fixed to the frame at the opposite end of the range of travel and facing the light source, and a deflecting optical element mounted to the coarse carriage in the path of the light. As the coarse carriage travels along its stroke between the inner and outer diameters of the optical disk, the amount of deflection of the light beam on the position sensitive device from a reference location will change. Based upon a trigonometric equation, a coarse position signal generator receives the output of the position sensitive device and generates a substantially linear coarse position signal indicative of the position of the coarse carriage.

    摘要翻译: 提供了一种用于光学记录装置的粗略位置传感器,以产生一个基本上线性的粗略位置信号,指示粗略支架沿其行程范围的位置,并且基本上不受环境和装置变化的影响。 所述传感器包括安装在所述行程范围的一端的驱动框架的光源,位于所述移动范围的相对端并面向所述光源的所述框架的位置敏感装置以及安装到 在光的路径上的粗车。 当粗滑架沿着光盘的内径和外径之间的行程行进时,来自参考位置的位置敏感装置上的光束的偏转量将改变。 基于三角方程,粗略位置信号发生器接收位置敏感装置的输出并产生指示粗滑架的位置的基本线性的粗略位置信号。

    Optical disk with marks used for calibrating an optical detector to
minimize noise from undesired perturbations in disk surfaces
    2.
    发明授权
    Optical disk with marks used for calibrating an optical detector to minimize noise from undesired perturbations in disk surfaces 失效
    带有标记的光盘,用于校准光学检测器,以最小化磁盘表面不期望的扰动的噪音

    公开(公告)号:US5627818A

    公开(公告)日:1997-05-06

    申请号:US250320

    申请日:1994-05-27

    摘要: A magnetooptical disk recording device has a far-field detector for detecting radial position of a laser beam with respect to tracks on the disk. The far-field detector has a reference line dividing first and second photo detectors. The reference line is centered radially with respect to center lines of the tracks. The reference line is also center lengthwise to be tangentially center with respect to a tangential point on the track. The detector is adjustable both radially and tangentially. The tangential adjustment is based upon sensing two low reflective calibration marks on the disk that indicate centering the laser beam, hence the track tangent point, on the reference line. The calibration is based upon obtaining minimum noise in the detector output signal that signifies that the laser beam is centered on the length of the detector reference line. The calibration marks are in a mirror area disposed at one radial extremity of the disk. The marks are radially elongate and disposed in a radially outward diverge with respect to each other. The marks are disposed at 45 degrees with respect to two circumferentially spaced apart radial lines of the disk.

    摘要翻译: 磁光盘记录装置具有用于检测激光束相对于盘上的轨迹的径向位置的远场检测器。 远场检测器具有划分第一和第二光电检测器的参考线。 参考线相对于轨道的中心线径向对中。 参考线也是纵向中心地相对于轨道上的切线点切向中心。 检测器径向和切向可调。 切向调整基于感测盘上的两个低反射校准标记,其指示将参考线上的激光束定心,从而对准轨道切线点。 校准基于获得检测器输出信号中的最小噪声,其表示激光束以检测器参考线的长度为中心。 校准标记位于设置在盘的一个径向末端处的镜像区域中。 标记是径向伸长的并且相对于彼此径向向外发散设置。 标记相对于盘的两个周向间隔开的径向线设置成45度。

    Optical device for compensation of multiple wavelengths and working distances in dual-fiber collimators
    3.
    发明授权
    Optical device for compensation of multiple wavelengths and working distances in dual-fiber collimators 失效
    用于补偿双光纤准直器中多个波长和工作距离的光学装置

    公开(公告)号:US06839485B2

    公开(公告)日:2005-01-04

    申请号:US10207564

    申请日:2002-08-29

    IPC分类号: G02B6/32 G02B6/34

    摘要: A particular focusing arrangement in a dual fiber collimator improves the transmission efficiency and ease of alignment of the collimator. In particular, the collimator includes two optical fibers mounted in a dual-fiber ferrule. The fiber end-faces are co-planar with the angle-polished end-face of the ferrule and displaced along the optical axis of the ferrule. The collimator unit also includes a first focusing element centered along the optical axis of the ferrule and positioned such that its back front focal point is between the two end faces of the fibers. An advantage provided by this arrangement is that by changing the fiber polish angle and polish azimuth, relative to a line connecting the fiber centers, superior coupling from one fiber to the other can be achieved, even with different working distances and at various wavelengths.

    摘要翻译: 双光纤准直仪中的特定聚焦装置提高了准直仪的传输效率和对准方便性。 特别地,准直器包括安装在双光纤套圈中的两根光纤。 纤维端面与套圈的角度抛光端面共面并且沿着套圈的光轴移位。 准直器单元还包括沿着套圈的光轴居中的第一聚焦元件并且被定位成使得其后前焦点位于光纤的两个端面之间。 通过这种布置提供的优点是,通过相对于连接纤维中心的线改变纤维抛光角度和抛光方位角,即使具有不同的工作距离和各种波长,也可以实现从一个光纤到另一个光纤的优良耦合。

    Multi-element prism for optical heads
    4.
    发明授权
    Multi-element prism for optical heads 失效
    光学头的多元素棱镜

    公开(公告)号:US5793719A

    公开(公告)日:1998-08-11

    申请号:US742237

    申请日:1996-10-31

    IPC分类号: G11B7/09 G11B7/135 G11B7/085

    摘要: An apparatus for providing focus and tracking error signals for controlling an application of a radiation beam to a data track of an optical storage medium is disclosed. The present invention describes a multi-element optical prism used in the optical head, which permits for a single return path, a reduced cross talk between focus and tracking error signals, and a reduced track offset.

    摘要翻译: 公开了一种用于提供用于控制对光存储介质的数据轨道的辐射束的应用的聚焦和跟踪误差信号的装置。 本发明描述了在光头中使用的多元件光学棱镜,其允许单个返回路径,减少焦点和跟踪误差信号之间的串扰以及减小的轨道偏移。

    Focus error detection using an equal path length lateral shearing
interferometer
    5.
    发明授权
    Focus error detection using an equal path length lateral shearing interferometer 失效
    使用等径长度横向剪切干涉仪进行聚焦误差检测

    公开(公告)号:US5446710A

    公开(公告)日:1995-08-29

    申请号:US972578

    申请日:1992-11-06

    IPC分类号: G11B7/09 G11B7/00

    CPC分类号: G11B7/0908 G11B7/0917

    摘要: This invention provides an equal path length lateral shearing interferometer and its implementation in focus detection devices, particularly for optical data storage devices. The interferometer comprises a beamsplitter and two abutting roof prisms. Shifting the placement of a roof prism along an axis orthogonal to the direction of light propagation and to the peak of the roof creates a lateral shear between the two output beams. Rotation a roof prism about this axis produces a tilt between the two output beams. This creates an interference pattern with a rotational orientation which is a function of the focus of the beam impinging on the optical storage medium. A pattern sensor is provided to adjust the focus of the beam in an accurate and dynamic manner.

    摘要翻译: 本发明提供了一种相等的路径长度横向剪切干涉仪及其在焦点检测装置中的实现,特别是用于光学数据存储装置。 干涉仪包括分束器和两个邻接的屋顶棱镜。 沿着与光传播方向正交的轴线和屋顶的顶部位置移动屋顶棱镜在两个输出光束之间产生横向剪切。 围绕该轴旋转屋顶棱镜在两个输出光束之间产生倾斜。 这产生具有旋转取向的干涉图案,旋转取向是光束入射在光学存储介质上的焦点的函数。 提供图案传感器以精确和动态的方式调整光束的焦点。

    Relative position sensing calibration for optical storage device
    6.
    发明授权
    Relative position sensing calibration for optical storage device 失效
    光存储设备的相对位置传感校准

    公开(公告)号:US5425013A

    公开(公告)日:1995-06-13

    申请号:US151238

    申请日:1993-11-12

    IPC分类号: G11B7/085 G11B7/00

    CPC分类号: G11B7/08505

    摘要: A relative position error signal is calibrated in an optical storage device in which a tracking error signal (TES) varies as the light beam shifts its position through the objective lens. The calibration is performed by moving the coarse carriage to a predetermined region of the optical disk and measuring the TES. The fine actuator is adjusted until the tracking error signal equals a predetermined value. Then, the relative position error signal is read and an adjustment to the RPE gain is calculated to bring the gain to a predetermined value. The adjusted gain is used during normal disk access operations.

    摘要翻译: 相对位置误差信号在光存储装置中被校准,其中跟踪误差信号(TES)随着光束将其位置偏移通过物镜而变化。 通过将粗滑架移动到光盘的预定区域并测量TES来执行校准。 微调致动器被调整直到跟踪误差信号等于预定值。 然后,读取相对位置误差信号,并计算对RPE增益的调整,以使增益达到预定值。 在正常磁盘访问操作期间使用调整后的增益。

    Method to determine transcriptional regulation pathways in organisms
    7.
    发明授权
    Method to determine transcriptional regulation pathways in organisms 有权
    确定生物体内转录调控途径的方法

    公开(公告)号:US08306752B1

    公开(公告)日:2012-11-06

    申请号:US12271944

    申请日:2008-11-17

    IPC分类号: G06F7/00

    CPC分类号: G06F19/24 G06F19/20

    摘要: The invention relates to computer-implemented methods and systems for identifying regulatory relationships between expressed regulating polypeptides and targets of the regulatory activities of such regulating polypeptides. More specifically, the invention provides a new method for identifying regulatory dependencies between biochemical species in a cell. In particular embodiments, provided are computer-implemented methods for identifying a regulatory interaction between a transcription factor and a gene target of the transcription factor, or between a transcription factor and a set of gene targets of the transcription factor. Further provided are genome-scale methods for predicting regulatory interactions between a set of transcription factors and a corresponding set of transcriptional target substrates thereof.

    摘要翻译: 本发明涉及用于鉴定表达的调节多肽与这些调节多肽的调节活性的靶标之间的调节关系的计算机实现的方法和系统。 更具体地,本发明提供了用于鉴定细胞中生物化学物质之间的调节依赖性的新方法。 在特定实施方案中,提供了用于鉴定转录因子与转录因子的转录因子和基因靶标之间或转录因子与转录因子的一组基因靶标之间的调节相互作用的计算机实现的方法。 还提供了用于预测一组转录因子与其相应的一组转录靶标底物之间的调节相互作用的基因组大小的方法。

    Angle tuning wavelength sensitive filters using a variable focal length lens
    8.
    发明授权
    Angle tuning wavelength sensitive filters using a variable focal length lens 失效
    使用可变焦距镜头的角度调谐波长敏感滤光片

    公开(公告)号:US06950574B2

    公开(公告)日:2005-09-27

    申请号:US10207573

    申请日:2002-07-29

    IPC分类号: G02B6/32 G02B6/34

    摘要: The invention relates to an approach to angle tuning a thin film, interference filter device in which light is delivered to the filter from a fiber lying off-axis relative to the filter, and to a method of optically coupling such a device. The optical device comprises a lens unit having an optical axis and an adjustable effective focal length. The device also includes a first port disposed on a first side of the lens unit and on a first side of the optical axis, and an optical element disposed on the second side of the lens unit. The optical element has an optical characteristic that is dependent on the angle of incidence on the optical element. The lens unit has an adjustable focal length so light from the first port is incident on the optical element at a desired angle.

    摘要翻译: 本发明涉及一种角度调整薄膜干涉滤光器装置的方法,其中光从相对于滤光片离轴的光纤传送到滤光器,以及光学耦合这种装置的方法。 光学装置包括具有光轴和可调节的有效焦距的透镜单元。 该装置还包括设置在透镜单元的第一侧上并且在光轴的第一侧上的第一端口和设置在透镜单元的第二侧上的光学元件。 光学元件具有取决于光学元件上的入射角的光学特性。 透镜单元具有可调节的焦距,使得来自第一端口的光以期望的角度入射在光学元件上。

    Laser power control independent of beamsplitter transmissivity
    9.
    发明授权
    Laser power control independent of beamsplitter transmissivity 失效
    激光功率控制独立于分光器透射率

    公开(公告)号:US5233175A

    公开(公告)日:1993-08-03

    申请号:US934704

    申请日:1992-08-24

    CPC分类号: G11B7/1356 G11B7/126

    摘要: An optoelectronic system for controlling laser drive current to produce a power level at the target independent of changes in the transmissivity of a beamsplitter positioned in the optical path between the laser source and the target. A second beamsplitter with transmissivity and reflectivity factors matched to the first beamsplitter is used to direct portions of light to two photodetectors. The two photodetectors are connected to circuits which produce a signal proportional to the power transmitted by the first beamsplitter divided by the power reflected by the second beamsplitter, that quotient multiplied by the sum of the photodetector signals to produce a final detection signal which is used as input to the servo control of laser drive current.

    摘要翻译: 一种光电子系统,用于控制激光驱动电流,以产生位于激光源和目标之间的光路中的分束器的透射率变化的目标处的功率电平。 具有与第一分束器匹配的透射率和反射率因子的第二分束器用于将部分光引导到两个光电检测器。 两个光电检测器连接到电路,其产生与由第一分束器传输的功率成比例的信号除以由第二分束器反射的功率的信号,该商与光电检测器信号的和乘以产生最终检测信号,其被用作 输入到激光驱动电流的伺服控制。