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1. 发明授权

US5828630A Diffraction-based direct read during write using magneto-optic recording media 失效
$Diffraction-based direct read during write using magneto-optic recording media$
标题翻译：使用磁光记录介质进行写入时的基于衍射的直接读取
公开(公告)号：US5828630A
公开(公告)日：1998-10-27
申请号：US852975
申请日：1997-05-07
申请人： Edward C. Gage , Clarke K. Eastman , Steven C. Dohmeier , James A. Barnard
发明人： Edward C. Gage , Clarke K. Eastman , Steven C. Dohmeier , James A. Barnard
IPC分类号： G11B7/09 , G11B7/125 , G11B7/135 , G11B11/105 , G11B7/00
CPC分类号： G11B7/1356 , G11B11/1053 , G11B11/10534 , G11B11/10545 , G11B7/126 , G11B11/10576 , G11B11/10595 , G11B7/0901
摘要： A magneto-optic head for reading and writing information on a magneto-optic recording medium so that diffraction effects can be monitored during writing is disclosed. The magneto-optic head includes a source of laser light for projecting a laser light beam during writing and reading, a first partial polarizing beamsplitter disposed in the beam of light for causing one beam of light to be transmitted to the recording medium and for receiving reflected light and for projecting such light in a first direction, a second polarizing beamsplitter for receiving polarized light in the first direction from the first partial polarizing beamsplitter and projecting such polarized light in second and third directions, a first detector for receiving light in the second direction from the second polarizing beamsplitter and a second detector for receiving light in the second direction from the second polarizing beamsplitter, each detector including at least two photosensitive elements being split in the in-track direction so that in-track diffraction effects can be determined.
摘要翻译：公开了一种用于在磁光记录介质上读取和写入信息以便在写入期间可以监视衍射效应的磁光头。磁光头包括用于在写入和读取期间投射激光束的激光源，设置在光束中的第一部分偏振分束器，用于使一束光被传输到记录介质并用于接收反射用于沿第一方向投射这样的光;第二偏振分束器，用于从第一部分偏振分束器沿第一方向接收偏振光并在第二和第三方向上投射这种偏振光;第一检测器，用于接收第二方向的光从第二偏振分束器和第二检测器接收来自第二偏振分束器的第二方向的光，每个检测器包括沿轨道内方向分割的至少两个光敏元件，从而可以确定轨道内衍射效应。

2. 发明授权

US5561655A Apparatus and method for differential tracking in a magneto-optic data storage system using mark edge detection 失效
标题翻译：在使用标记边缘检测的磁光数据存储系统中进行差分跟踪的装置和方法
公开(公告)号：US5561655A
公开(公告)日：1996-10-01
申请号：US349162
申请日：1994-12-02
申请人： Edward C. Gage , James A. Barnard
发明人： Edward C. Gage , James A. Barnard
IPC分类号： G11B7/09 , G11B7/135 , G11B11/105 , G11B7/00
CPC分类号： G11B7/1356 , G11B11/10543 , G11B11/10576 , G11B7/0901
摘要： An apparatus and method for providing a tracking error signal in an optical system in which a radiation beam is applied to an optical storage medium having a number of marks formed thereon. A return beam resulting from application of the incident radiation beam to the medium is separated into a first polarization component and a second polarization component. First and second detectors detect the first and second polarization components and generate first and second detected signals therefrom. A tracking error signal is generated from the first and second detected signals, and is responsive to variations in the return beam arising from diffraction of the incident beam from, for example, cross-track edges of the marks on the medium. The marks may be previously-recorded data marks or preformatted tracking marks, and the medium may be a non-grooved magneto-optic medium.
摘要翻译：一种用于在光学系统中提供跟踪误差信号的装置和方法，其中辐射束被施加到在其上形成有多个标记的光学存储介质。将入射辐射束施加到介质而产生的返回光束被分离为第一偏振分量和第二偏振分量。第一和第二检测器检测第一和第二偏振分量并从其产生第一和第二检测信号。从第一和第二检测信号产生跟踪误差信号，并且响应于来自例如介质上的标记的交叉轨道边缘的入射光束的衍射引起的返回光束的变化。标记可以是先前记录的数据标记或预先格式化的跟踪标记，并且介质可以是非槽的磁光介质。

3. 发明授权

US5598386A Optimized linear motors for focus/tracking actuators in optical disk drives 失效
标题翻译：优化的线性电机用于光盘驱动器中的焦点/跟踪执行器
公开(公告)号：US5598386A
公开(公告)日：1997-01-28
申请号：US376567
申请日：1995-01-23
申请人： Boris A. Shtipelman , James A. Barnard
发明人： Boris A. Shtipelman , James A. Barnard
IPC分类号： G11B7/09 , H02K41/035
CPC分类号： G11B7/0935 , H02K41/0354 , G11B7/093 , G11B7/0932 , H02K2201/18
摘要： A focus/tracking actuator for controlling the respective focus and tracking positions of a lens used to direct a focused beam of radiation onto a desired data track on a moving recording element comprises a pair of moving coil-type linear motors. Each of the motors comprises a coil of wire disposed in a magnetic air gap and adapted to move therein in response to an applied current flow. According to the invention, the respective masses of the motor coils are optimized to achieve maximum acceleration with minimum power comsumption. Preferably, the coils have a combined mass substantially equal to the mass of the moving payload, which includes the lens assembly and its movable support.
摘要翻译：用于控制用于将聚焦射束辐射引导到移动记录元件上的所需数据轨道的透镜的各个聚焦和跟踪位置的对焦/跟踪致动器包括一对动圈式线性马达。每个电动机包括设置在磁性空气间隙中并适于在其中响应于所施加的电流流动而在其中移动的线圈。根据本发明，电机线圈的各个质量被优化以在最小功率消耗下实现最大加速度。优选地，线圈具有基本上等于移动有效载荷的质量的组合质量，其包括透镜组件及其可移动支撑件。

4. 发明授权

US5215808A Optical tape recording media with integral dust-defocusing transparent film 失效
标题翻译：带有整体除尘透明胶片的光带记录介质
公开(公告)号：US5215808A
公开(公告)日：1993-06-01
申请号：US577373
申请日：1990-09-04
申请人： James A. Barnard
发明人： James A. Barnard
IPC分类号： G11B7/003 , G11B7/24 , G11B11/105 , G11B23/50 , G11B33/14
CPC分类号： G11B7/003 , G11B23/505 , G11B7/24 , G11B11/10582 , G11B33/14 , Y10S428/913 , Y10S430/146 , Y10T428/24661 , Y10T428/24793 , Y10T428/31507
摘要： An optical tape recording medium is provided with a transparent flexible membrane which covers the recording surface of the tape and is bonded to its edges so as to trap a small bubble of fluid, e.g., gas or liquid. During recording, the trapped bubble displaces dust particles resting on the film's upper surface to a location out of the zone of focus of a read/write beam. As the tape is longitudinally transported, the trapped bubble is held stationary at the read/write station of the recording apparatus. In a tape cassette, the optically writable tape is wound around two reels with sufficient tension to trap the bubble in that portion of the tape stretched between the supply and take-up reels. In one embodiment of the invention, the bubble contains a transparent magnetic liquid which can be properly positioned by a magnet when the cassette is first inserted into an optical recording or playback apparatus. The invention is generally useful with any optically writable media, including optical and magneto-optical write/read media.
摘要翻译：光带记录介质设置有透明柔性膜，该透明柔性膜覆盖带的记录表面并且被结合到其边缘以便捕获诸如气体或液体的流体的小气泡。在记录期间，被捕获的气泡将沉积在胶片上表面上的灰尘颗粒置于读/写光束的焦点区域之外的位置。当带被纵向输送时，被捕获的气泡保持在记录装置的读/写站处。在磁带盒中，可光学写入的磁带以足够的张力缠绕在两个卷轴上，以将磁带捕获在供带卷轴和卷取卷轴之间拉伸的磁带部分。在本发明的一个实施例中，气泡包含透明磁性液体，当磁带首次插入到光学记录或重放装置中时，可以通过磁体适当地定位透明磁性液体。本发明对于包括光学和磁光写入/读取介质的任何光学可写介质通常是有用的。

5. 发明授权

US5152597A Magneto-optic readout using a polarization-preserving optical fiber 失效
标题翻译：使用偏振光保护光纤进行磁光读出
公开(公告)号：US5152597A
公开(公告)日：1992-10-06
申请号：US620803
申请日：1990-12-03
申请人： James A. Barnard
发明人： James A. Barnard
IPC分类号： G11B7/135 , G11B11/10 , G11B11/105
CPC分类号： G11B7/1384 , G11B11/10545
摘要： Apparatus for reading out information magneto-optically recorded in a magnetic layer comprises a single, polarization-preserving optical fiber for transmitting plane-polarized readout radiation from a source to the recording layer, as well as for transmitting such radiation, upon being reflected by the recording layer, toward a pair of photodetectors for the differential detection of the Kerr rotation angles (.+-..THETA..sub.k) produced by the up/down orientation of the vertically oriented magnetic domain in the recording layer. Optical feedback of the reflected readout radiation to the readout source is minimized by the provision of a pair of polarization beam-splitters having a 45 degree magneto-optic polarization-rotator (e.g. a Faraday rotator) positioned therebetween. The polarization beam-splitters and retardation plate are positioned in the optical path between the readout source and the optical fiber.
摘要翻译：用于读出磁光记录在磁层中的信息的装置包括用于将平面偏振读出辐射从源传输到记录层的单一的偏振保留光纤，以及用于在由记录层，朝向一对光电检测器，用于差分检测由记录层中垂直取向的磁畴的上/下取向产生的克尔旋转角（+/- THETA k）。通过提供一对具有位于它们之间的45度磁光偏振旋转器（例如法拉第旋转器）的偏振光束分离器，将反射的读出辐射到读出源的光学反馈最小化。偏振光束分离器和延迟板位于读出光源和光纤之间的光路中。

6. 发明授权

US5774448A Air sandwiched optical discs with closable pressure relief holes 失效
标题翻译：空气夹芯光盘，带有可关闭的卸压孔
公开(公告)号：US5774448A
公开(公告)日：1998-06-30
申请号：US756197
申请日：1996-11-22
申请人： Boris A. Shtipelman , James A. Barnard
发明人： Boris A. Shtipelman , James A. Barnard
IPC分类号： G11B7/24 , G11B23/00 , G11B23/03 , G11B33/14
CPC分类号： G11B7/24015 , G11B23/0021 , G11B23/0316
摘要： An optical disc is disclosed having a substrate in which data can be written on or read from, such optical disc being adapted to be inserted and clamped onto a spindle in a disc drive and having a transparent cover sheet disposed over the substrate surface. The cover sheet is held at inner and outer radii so that it is positioned to have a desired spacing from the substrate to prevent contaminants from passing to the substrate surface. A plurality of air passages are formed in the optical disc to prevent the transparent cover sheet from deflecting due to pressure differences between the outside atmosphere and the air in the space between the substrate surface and the transparent cover sheet.
摘要翻译：公开了一种光盘，其具有可以将数据写入或读取的基板，该光盘适于插入并夹紧在盘驱动器中的主轴上，并且具有设置在基板表面上方的透明盖板。覆盖片保持在内半径和外半径处，使得它被定位成与基底具有期望的间隔，以防止污染物通过到基底表面。在光盘中形成多个空气通道，以防止透明覆盖片由于基板表面和透明盖板之间的空间中的外部气氛和空气之间的压力差而偏转。

7. 发明授权

US4819218A Quasi-constant linear-velocity disk having corresponding radii of adjacent annular zones related by a rational number for distributing prerecorded indicia to form a coherent write clock signal 失效
标题翻译：准恒定线速度盘，其相应的相邻环形区域的半径与用于分配预先记录的标记的有理数量相关联以形成相干写入时钟信号
公开(公告)号：US4819218A
公开(公告)日：1989-04-04
申请号：US943396
申请日：1986-12-19
申请人： James A. Barnard
发明人： James A. Barnard
IPC分类号： G11B7/013 , G11B20/12 , H04N5/76
CPC分类号： G11B7/24085 , G11B20/1258
摘要： A disk (magnetic, magneto-optical or optical) includes information-bearing tracks having prerecorded indicia, preferably tracking pads, distributed uniformly along each track for phase locking a write clock so as to write user data subsequently between the tracking pads, in the presence of random fluctuations in disk speed. The tracks are grouped into a plurality of annular zones encircling the center of the disk, wherein the ratio of the inner radius (or outer radius) of a given zone to the corresponding radius of the adjacent inner zone is a rational number, n/d, which is the same for each adjacent pair of zones. Each track within a given zone, i, has a fixed number of radially aligned tracking pads, P.sub.i, calculated from:P.sub.i =(n/d).sup.i-1 .times.(d).sup.N-1where i is 1 for the innermost zone and is N for the outermost zone.
摘要翻译：磁盘（磁性，磁光学或光学）包括具有预记录标记的信息载体轨道，优选跟踪焊盘，沿着每个轨迹均匀分布，用于锁定写时钟，以便在存在时在跟踪焊盘之间写入用户数据的磁盘速度的随机波动。轨道被分组成围绕盘的中心的多个环形区域，其中给定区域的内半径（或外半径）与相邻内区域的相应半径的比率是有理数，n / d ，对于每个相邻的一对区域是相同的。给定区域内的每个轨道i具有固定数量的径向对准的跟踪焊盘Pi，由Pi =（n / d）i-1x（d）N-1计算，其中i对于最内区域为1，并且是 N为最外层。

8. 发明授权

US4228573A Method for assembling heat exchangers 失效
标题翻译：组装热交换器的方法
公开(公告)号：US4228573A
公开(公告)日：1980-10-21
申请号：US53361
申请日：1979-06-29
申请人： James A. Barnard
发明人： James A. Barnard
IPC分类号： B21D53/08 , B23P15/26
CPC分类号： B21D53/085 , Y10T29/49368 , Y10T29/4938
摘要： Method and apparatus are disclosed for rapidly assembling a heat exchanger comprised of perforated fins, a pair of perforated headers and a plurality of reverse bent tubes as the fins are being stamped from sheet stock. The parts are assembled on a pallet fixture which is advanced by a continuously moving conveyor to various work stations. At each work station, the pallet fixture is lifted and then held in a predetermined position overhead the conveyor while an assembly operation operated from one side of the conveyor is performed thereon whereafter the pallet fixture is lowered onto the conveyor.
摘要翻译：公开了用于快速组装由多孔翅片组成的热交换器的方法和装置，一对穿孔的集管和多个反向弯曲的管，因为翅片被片材冲压。部件组装在托盘固定装置上，该托盘固定装置由连续移动的输送机推进到各种工作站。在每个工作站，托盘夹具被提起，然后被保持在传送器顶部的预定位置，而从输送机的一侧操作的组装操作在其上执行，之后托盘固定件下降到输送机上。

9. 发明授权

US5872768A Optical discs with cover sheets and pressure equalization of the enclosed air 失效
标题翻译：带盖的光盘和封闭空气的压力均衡
公开(公告)号：US5872768A
公开(公告)日：1999-02-16
申请号：US755747
申请日：1996-11-22
申请人： Boris A. Shtipelman , James A. Barnard , Charles J. Simpson
发明人： Boris A. Shtipelman , James A. Barnard , Charles J. Simpson
IPC分类号： G11B7/24 , G11B3/70
CPC分类号： G11B7/24015 , G11B7/24056
摘要： An optical disc is disclosed having a substrate in which data can be written on or read from, such optical disc has a transparent cover sheet which is held at a desired spacing from the substrate at least at an inner radius and an outer radius. In order to prevent the transparent cover sheet from deflecting due to pressure differences between the outside atmosphere and the air in the space between the substrate surface and the transparent cover sheet, a plurality of air passages in the transparent cover sheet are provided near an inflection point where on one lateral side of the point the transparent sheet will bulge and on the other lateral side it will be depressed due to centrifugal force acting upon air entrapped between the transparent cover sheet and the substrate surface during disc rotation in an optical disc drive. This arrangement equalizes the pressure in the air space between the transparent cover sheet and the substrate surface and the outside atmosphere.
摘要翻译：公开了一种光盘，其具有数据可写入或读取的基板，该光盘具有至少在内半径和外半径处以与基板保持期望间隔的透明盖板。为了防止透明覆盖片由于基板表面和透明盖板之间的空间中的外部气氛和空气之间的压力差而偏转，透明盖板中的多个空气通道设置在拐点附近在该点的一个侧面上，透明片材将凸出并且在另一侧面上将由于在光盘驱动器中的盘旋转期间作用于夹在透明覆盖片和基板表面之间的空气的离心力而被压下。这种布置使得透明覆盖片和基板表面之间的空气空间和外部气氛的压力相等。

10. 发明授权

US5859830A Dynamic tracking control in an optical recording system by diffraction-based mark formation detection 失效
$Dynamic tracking control in an optical recording system by diffraction-based mark formation detection$
标题翻译：通过基于衍射的标记形成检测在光学记录系统中的动态跟踪控制
公开(公告)号：US5859830A
公开(公告)日：1999-01-12
申请号：US925826
申请日：1997-09-05
申请人： Clarke K. Eastman , James A. Barnard
发明人： Clarke K. Eastman , James A. Barnard
IPC分类号： G11B7/09 , G11B7/00
CPC分类号： G11B7/0904
摘要： An apparatus and method for providing dynamic tracking error detection and control in an optical recording system in which an incident beam records data on a medium in the form of marks. A diffraction-based mark formation effectiveness (MFE) signal is generated by monitoring a reflected write signal in part of the return beam aperture or in multiple zones of the return beam aperture and is indicative of a characteristic of the marks formed on the medium. A position signal is generated to provide an indication of cross-track movement of the incident beam relative to a tracking structure on the medium. The tracking structure may be a wobbled groove on an optical disk recording medium. Variations in the diffraction-based MFE and position signals are correlated to provide a dynamic tracking error signal (TES). The diffraction-based MFE and position signal variations may be correlated by, for example, multiplying the two signals together in a multiplier circuit, or using the position signal to control application of the diffraction-based MFE signal to particular inputs of a signal difference circuit. The dynamic TES may be utilized in a servo loop with or without a push-pull signal or other conventional tracking signal.
摘要翻译：一种用于在光学记录系统中提供动态跟踪误差检测和控制的装置和方法，其中入射光束以标记的形式将数据记录在介质上。通过在返回光束孔径的一部分或返回光束孔径的多个区域中监视反射的写入信号来产生基于衍射的标记形成有效性（MFE）信号，并且指示在介质上形成的标记的特征。生成位置信号以提供入射光束相对于介质上的跟踪结构的横向轨道移动的指示。跟踪结构可以是光盘记录介质上的摆动凹槽。基于衍射的MFE和位置信号的变化被相关以提供动态跟踪误差信号（TES）。基于衍射的MFE和位置信号变化可以通过例如在乘法器电路中将两个信号相乘在一起，或者使用位置信号来控制将衍射基MFE信号施加到信号差分电路的特定输入端。动态TES可以用于具有或不具有推挽信号或其它常规跟踪信号的伺服环路。

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