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1. 发明授权

US5991112A Non-contact servotrack writing with phase sensitive detection 失效
标题翻译：非接触式伺服磁带写入，具有相敏检测功能
公开(公告)号：US5991112A
公开(公告)日：1999-11-23
申请号：US812998
申请日：1997-03-04
申请人： Hubert Song , John C. Tsai , Mervyn L. Hopson , Kam-Fung Yan , Jean Chi
发明人： Hubert Song , John C. Tsai , Mervyn L. Hopson , Kam-Fung Yan , Jean Chi
IPC分类号： G11B5/55 , G11B21/02 , G11B21/08 , G11B21/10 , G01B9/02
CPC分类号： G11B5/5552 , G11B21/02 , G11B21/08 , G11B21/106
摘要： A servotrack writing apparatus (10) for use on computer disk drive workpieces (12). A writer controller (58) puts the writing apparatus (10) in the role of master to direct the workpiece (12) as a slave to position its read-write head (36) and to write the servotracks. A tracking section (54) provides a modulated light beam (72) from which a reflected portion is detected by a bi-cell photo sensor (70) and processed in the writer controller (58) to determine the position of a thru-hole (40) or a detection region (42) in the actuator arm (24) of the workpiece (12). The writer controller (58) may use a lock-in amplifier (102, 104) for the processing the reflected portion of the light beam (72). A reference arm (44) is locked and moved in a synchronous relationship with the actuator arm (24). A measurement section (56) determines the position of the reference arm (44), and may include an interferometer system (122) having a differential head (128) and a differential target (124), to permit increased resolution and nulling of errors. The interferometer system (122) may also use multiple frequency techniques to further increase resolution.
摘要翻译：一种用于计算机磁盘驱动器工件（12）上的伺服磁带写入装置（10）。写入器控制器（58）将写入装置（10）置于主机的作用下，将工件（12）作为从机定位其读写头（36）并写入伺服机架。跟踪部分（54）提供调制光束（72），双重单元光电传感器（70）从该光束检测反射部分，并在写入器控制器（58）中进行处理以确定通孔的位置（ 40）或工件（12）的致动器臂（24）中的检测区域（42）。写入器控制器（58）可以使用锁定放大器（102,104）来处理光束（72）的反射部分。参考臂（44）被锁定并与致动器臂（24）同步地移动。测量部分（56）确定参考臂（44）的位置，并且可以包括具有差动头（128）和差动目标（124）的干涉仪系统（122），以允许增加的误差分辨率和归零。干涉仪系统（122）还可以使用多频技术来进一步提高分辨率。

2. 发明授权

US07268699B2 Highway-rail grade crossing hazard mitigation 失效
标题翻译：公路轨道交叉危害减轻
公开(公告)号：US07268699B2
公开(公告)日：2007-09-11
申请号：US10906800
申请日：2005-03-07
申请人： John C. Tsai
发明人： John C. Tsai
IPC分类号： G18G1/00 , G08B13/00
CPC分类号： E01B26/00 , B61L29/24 , B61L29/30 , E01C9/04
摘要： A hazard mitigation system to detect an object in a highway-railway grade crossing. A structure is provided that includes a fixed foundation and a surface layer that is cushionably placed above the foundation, such that the structure is located between tracks at the crossing. At least one sensor is mounted between the surface layer and the foundation. This sensor senses the weight of the object upon the surface layer and provides a sensor signal representative of that weight. A control unit receives the sensor signal, processes it to determine whether the object represents a potential hazard, and, if so generates a warning signal. The sensor can particularly include a pressure or strain gage, or a fiber optic sensor. When a fiber optic sensor is employed, it can particularly include a fiber Bragg grating.
摘要翻译：一种危害缓解系统，用于检测高速公路铁路路口的物体。提供了一种结构，其包括固定基座和缓冲地放置在基座之上的表面层，使得该结构位于交叉处的轨道之间。至少一个传感器安装在表面层和基础之间。该传感器感测物体在表面层上的重量，并提供表示该重量的传感器信号。控制单元接收传感器信号，处理它以确定对象是否表示潜在危险，并且如果产生警告信号。传感器可以特别包括压力或应变计或光纤传感器。当采用光纤传感器时，它可以特别包括光纤布拉格光栅。

3. 发明授权

US06561420B1 Information card system 失效
标题翻译：信息卡系统
公开(公告)号：US06561420B1
公开(公告)日：2003-05-13
申请号：US09835961
申请日：2001-04-10
申请人： Erica Tsai , John C. Tsai
发明人： Erica Tsai , John C. Tsai
IPC分类号： G06K708
CPC分类号： H04B10/572 , G01J2009/0257 , G06K7/084 , G06K19/083 , G06K19/12 , H01S3/13 , H04B10/07 , H04B10/503
摘要： A data distribution system (10) including an information card (12) and a reader (14). The information card (12) includes visible indicia (20) on its front and stripe zones (34) and a ring zone (36) on its back. The zones (34, 36) are suitable for magnetically recording data, and optional data identifiers. The reader (14) may be a linear reader (14a) or a rotary reader (14b), and optionally may act automatically in response to reading a data identifier. If the reader (14) is a rotary reader (14b) the information card (12) may be loaded into a cartridge (16) which is loaded into the rotary reader (14b).
摘要翻译：一种包括信息卡（12）和读取器（14）的数据分发系统（10）。信息卡（12）在其前面包括可见标记（20），在其背面包括条带区（34）和环形区（36）。区域（34,36）适用于磁记录数据和可选数据标识符。读取器（14）可以是线性读取器（14a）或旋转读取器（14b），并且可选地响应于读取数据标识符而自动地进行操作。如果读取器（14）是旋转读取器（14b），信息卡（12）可以被装载到装载到旋转读取器（14b）中的盒（16）中。

4. 发明授权

US5774295A Servo track writing technique 失效
标题翻译：伺服轨迹写入技术
公开(公告)号：US5774295A
公开(公告)日：1998-06-30
申请号：US818330
申请日：1997-03-14
申请人： John C. Tsai
发明人： John C. Tsai
IPC分类号： G11B5/55 , G11B5/596 , G11B21/08
CPC分类号： G11B5/59633 , G11B21/083 , G11B5/5534
摘要： A servotrack writing apparatus (10) having a reference section (30), a workpiece section (32), and a tracking section (34). With the reference section (30) a standard is established without a disk drive workpiece (12) mounted. A workpiece (12) is then mounted in the workpiece section (32) with a beamsplitter-reflector unit (52) attached to the actuator arm (20) bearing the read-write head (18) which is to be used for servotrack writing, and verification information is obtained for comparison with the standard. Based upon this comparison, correction of workpiece (12) mounting offset and eccentricity of beamsplitter-reflector unit (52) mounting may then be performed before servotracks are written, or compensation for such offset and eccentricity may be performed while servotracks are written. The tracking section (34) operates using closed-loop feedback to slave the actuator arm (20) of the workpiece (12) to a tracking arm (62) and then may use a laser interferometer (70) to precisely measure location of a tracking retro-reflector (68) mounted on the tracking arm (62), thereby permitting very accurate and controlled positioning of the synchronized read-write head (18) while servotrack writing is carried out.
摘要翻译：具有参考部分（30），工件部分（32）和跟踪部分（34）的伺服轨道写入装置（10）。使用参考部分（30），在没有安装盘驱动器工件（12）的情况下建立标准。然后将工件（12）安装在工件部分（32）中，分束器 - 反射器单元（52）附接到承载用于伺服磁带写入的读写头（18）的致动器臂（20）并获得与标准比较的验证信息。基于该比较，可以在写入伺服机架之前执行工件（12）安装偏移和分束器 - 反射器单元（52）的偏心的校正，或者可以在伺服记录被写入的同时进行这种偏移和偏心的补偿。跟踪部分（34）使用闭环反馈来操作工件（12）的致动器臂（20）从动到跟踪臂（62），然后可以使用激光干涉仪（70）来精确地测量跟踪的位置安装在跟踪臂（62）上的后向反射器（68），从而在执行伺服轨迹写入的同时允许同步读写头（18）的非常精确和受控的定位。

5. 发明授权

US5315372A Non-contact servo track writing apparatus having read/head arm and reference arm 失效
标题翻译：具有读/头臂和参考臂的非接触式伺服轨迹写入装置
公开(公告)号：US5315372A
公开(公告)日：1994-05-24
申请号：US262
申请日：1993-01-04
申请人： John C. Tsai
发明人： John C. Tsai
IPC分类号： G01D5/30 , G11B5/55 , G01B9/02
CPC分类号： G01D5/30 , G11B5/5534
摘要： A servo track writing apparatus (10, 210) for writing servo tracks (16) on a media disk (14) of a disk drive assembly (12), the servo track writing apparatus (10, 210) having a laser interferometer (30) for positioning a remote servo track positioning arm (48, 248) with a second cube corner retroreflector (46) attached thereto. A relationship determining apparatus (56, 256) determines the physical relationship between the track positioning arm (48, 248) and a head positioning arm (22) or linear head actuator (220) using a light emitting device (58) and a photosensitive diode array (60). A third light beam (62) from the light emitting device (58) is reflected from the head positioning arm (22) or linear head actuator (220) onto the photosensitive diode array (60) and variations in the position of the third light beam (62) on the photosensitive diode array (60) cause a head positioning arm servo motor (68) to move the head positioning arm (22) or linear head actuator (220)head positioning arm (22) or linear head actuator (220) as required.
摘要翻译：一种用于将磁盘驱动器组件（12）的介质盘（14）上的伺服磁道（16）写入的伺服磁道写入装置（10,210），具有激光干涉仪（30）的伺服磁道写入装置（10,210）用于将远程伺服轨道定位臂（48,248）定位成附接到其上的第二立方角后向反射器（46）。关系确定装置（56,256）使用发光装置（58）和感光二极管（58）确定轨道定位臂（48,248）和头定位臂（22）或线性头致动器（220）之间的物理关系阵列（60）。来自发光器件（58）的第三光束（62）从头定位臂（22）或线性头致动器（220）反射到光敏二极管阵列（60）上，并且第三光束（62）在光敏二极管阵列（60）上使头部定位臂伺服电动机（68）移动头部定位臂（22）或线性头部致动器（220）头部定位臂（22）或线性头部致动器（220）按要求。

6. 发明授权

US5191391A High resolution plane mirror interferometer 失效
标题翻译：高分辨率平面镜干涉仪
公开(公告)号：US5191391A
公开(公告)日：1993-03-02
申请号：US647716
申请日：1991-01-29
申请人： John C. Tsai
发明人： John C. Tsai
IPC分类号： G01B9/02 , G01P3/36 , G01S17/50
CPC分类号： G01P3/366 , G01B9/02018 , G01B9/02019 , G01S17/50 , G01B2290/70
摘要： What is disclosed is an improved high resolution laser interferometer (10) which gains an increase in available resolution by means of increasing the number of reflections of a measurement laser beam (16) from a plane mirror (20) and thus by increasing the number of Doppler shifts undergone by the measurement laser beam (16). The inventive arrangement of optics combines a polarizing cube (24), a cube corner retroreflector (28), a right angle reflector (30), and one or more quarter wave plates (32) and (34) to produce the desired result. In the practice of the present invention, the measurement laser beam (16) is directed from a laser head (12) such that it is affected four times by any movement of the objective plane mirror (20) in a measurement plane (22) before being compared to a reference laser beam (16) in a signal analysis unit (14). The reference laser beam (16) is routed in a conventional manner to the signal analysis unit (14).
摘要翻译：所公开的是改进的高分辨率激光干涉仪（10），其通过从平面镜（20）增加测量激光束（16）的反射次数而获得可用分辨率的增加，并且因此通过增加多普勒频移由测量激光束（16）进行。本发明的光学组合结合了偏振立方体（24），立体角后向反射器（28），直角反射器（30）和一个或多个四分之一波片（32）和（34）以产生期望的结果。在本发明的实践中，测量激光束（16）从激光头（12）引导，使得它在测量平面（22）内由物镜平面镜（20）的任何运动影响四次，之前与信号分析单元（14）中的参考激光束（16）进行比较。参考激光束（16）以常规方式被路由到信号分析单元（14）。

7. 发明授权

US07375822B2 Rotation and translation measurement 失效
标题翻译：旋转和平移测量
公开(公告)号：US07375822B2
公开(公告)日：2008-05-20
申请号：US11462348
申请日：2006-08-03
申请人： John C. Tsai
发明人： John C. Tsai
IPC分类号： G01B11/02
CPC分类号： G01B9/02027 , G01B9/02019 , G01B9/02045 , G01B2290/15 , G11B5/5552 , G11B21/02 , G11B21/08 , G11B21/106
摘要： A position determining system (PDS)(100) or multiple parameters measurement system (MPMS)(300) particularly useful for translation and rotation measurement of objects having up to five degrees of freedom. A light source (122, 302) provides light beams (124, 304) into at least two channels. Each channel may include an interferometer (310), reflective target (110, 314), beam splitter (128, 312), detector (132, 316), and receiver (318). In concert, the detectors (132, 316) sense horizontal, vertical, and roll position and the receivers (318) sense longitudinal and yaw position change. Optionally, modulation can be imposed on the light beams (124, 304) and phase-sensitive synchronous demodulation used to enhance accuracy.
摘要翻译：位置确定系统（PDS）（100）或多参数测量系统（MPMS）（300），对于具有至多五个自由度的物体的平移和旋转测量特别有用。光源（122,302）将光束（124,304）提供到至少两个通道中。每个通道可以包括干涉仪（310），反射目标（110,314），分束器（128,312），检测器（132,316）和接收器（318）。一致地，检测器（132,316）感测水平，垂直和滚动位置，并且接收器（318）感测纵向和偏航位置变化。可选地，可以对光束（124,304）施加调制，并且用于提高精度的相敏同步解调。

8. 发明授权

US07139295B2 Tunable wavelength locker, tunable wavelength spectrum monitor, and relative wavelength measurement system 有权
标题翻译：可调谐波长锁定器，可调波长频谱监测器和相对波长测量系统
公开(公告)号：US07139295B2
公开(公告)日：2006-11-21
申请号：US10707950
申请日：2004-01-27
申请人： John C. Tsai , David W. Wang
发明人： John C. Tsai , David W. Wang
IPC分类号： H01S3/10
CPC分类号： H01S3/1392
摘要： A system for tuning the wavelength of a beam from a tunable laser. A tunable etalon assembly includes a Fabry-Perot etalon with paired reflectors to filter the laser beam. The tunable etalon also includes a thermal unit to thermally adjust the separation of the paired responsive to an etalon tuning signal. A photodetector receives the laser beam after filtering the etalon and generates a detected signal based on intensity. A controller generates the etalon tuning signal, and receives the detected signal and generates a laser tuning signal based on it. Optionally, additional Fabry-Perot etalons, photodetectors, and one or more beamsplitters permit extending wavelength range and determining relative wavelength difference with a beam from a second laser.
摘要翻译：用于从可调激光器调谐光束的波长的系统。可调谐的标准具组件包括具有配对反射器的法布里 - 珀罗标准具以过滤激光束。可调标准具还包括热单元，用于热调节响应于标准具调谐信号的成对分离。光电检测器在过滤标准具后接收激光束，并根据强度产生检测信号。控制器产生标准具调谐信号，并接收检测到的信号，并基于此产生激光调谐信号。可选地，附加的法布里 - 珀罗标准具，光电检测器和一个或多个分束器允许扩展波长范围并且确定与来自第二激光器的光束的相对波长差异。

9. 发明授权

US06795459B2 Light frequency locker 有权
标题翻译：光频储物柜
公开(公告)号：US06795459B2
公开(公告)日：2004-09-21
申请号：US09798721
申请日：2001-03-01
申请人： John C. Tsai
发明人： John C. Tsai
IPC分类号： H01S310
CPC分类号： H04B10/572 , G01J3/26 , G01J2009/0257 , H01S3/13 , H04B10/07 , H04B10/503
摘要： A light frequency locker (10) able to accept a light beam (14) generated by a controllable light source (12) into a light diverter (16) and impart to it a transverse displacement characteristic which can be detected in a light detection unit (20) connected to a processor (22). The processor (22) then controls the light source (12). Optionally, a light diverger (18) may be provided to enhance angular resolution. The light diverter (16) and the light diverger (18) may either transmit or reflect the light. The light diverter (16) may particularly include a diffraction grating (116, 156), Fabry-Perot interferometer (216), multiple slit plate (316), or an acousto-optical unit (416).
摘要翻译：一种能够将由可控光源（12）产生的光束（14）接收到光转向器（16）中并向其赋予横向位移特性的光频锁定器（10），所述横向位移特性可在光检测单元 20）连接到处理器（22）。然后，处理器（22）控制光源（12）。可选地，可以提供光发散器（18）以增强角度分辨率。光分路器（16）和光分路器（18）可以传输或反射光。光分路器（16）可以特别地包括衍射光栅（116,156），法布里 - 珀罗干涉仪（216），多个狭缝板（316）或声光单元（416）。

10. 发明授权

US06789738B2 Information card system 失效
标题翻译：信息卡系统
公开(公告)号：US06789738B2
公开(公告)日：2004-09-14
申请号：US10371928
申请日：2003-02-21
申请人： Erica Tsai , John C. Tsai
发明人： Erica Tsai , John C. Tsai
IPC分类号： G06F700
CPC分类号： H04B10/572 , G01J2009/0257 , G06K7/084 , G06K19/083 , G06K19/12 , H01S3/13 , H04B10/07 , H04B10/503
摘要： A data distribution system (10) including an information card (12) and a reader (14). The information card (12) includes visible indicia (20) on its front and stripe zones (34) and a ring zone (36) on its back. The zones (34, 36) are suitable for magnetically recording data, and optional data identifiers. The reader (14) may be a linear reader (14a) or a rotary reader (14b), and optionally may act automatically in response to reading a data identifier. If the reader (14) is a rotary reader (14b) the information card (12) may be loaded into a cartridge (16) which is loaded into the rotary reader (14b).
摘要翻译：一种包括信息卡（12）和读取器（14）的数据分发系统（10）。信息卡（12）在其前面包括可见标记（20），在其背面包括条带区（34）和环形区（36）。区域（34,36）适用于磁记录数据和可选数据标识符。读取器（14）可以是线性读取器（14a）或旋转读取器（14b），并且可选地响应于读取数据标识符而自动地进行操作。如果读取器（14）是旋转读取器（14b），信息卡（12）可以被装载到装载到旋转读取器（14b）中的盒（16）中。

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