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1. 发明授权

US06583964B1 Disk drive with mode canceling actuator 失效
标题翻译：带有取消执行器的磁盘驱动器
公开(公告)号：US06583964B1
公开(公告)日：2003-06-24
申请号：US09272941
申请日：1999-03-18
申请人： Fu-Ying Huang , Wayne Isami Imaino , Jiann-Chang Lo , Matthew T. White
发明人： Fu-Ying Huang , Wayne Isami Imaino , Jiann-Chang Lo , Matthew T. White
IPC分类号： G11B2110
CPC分类号： G11B5/4833 , G11B5/4813 , G11B33/08
摘要： A disk drive having an arm assembly equipped with a primary actuator such as a VCM and a mode-canceling actuator such as a PZT mounted at a location selected in such a way that the strain in the mode-canceling actuator is in phase with sway deformations of the primary actuator produced by the vibrational modes of the arm assembly. The primary actuator is driven to exert a primary force, f ⋁ pm , on the arm assembly while the secondary driver ensures that the mode-canceling actuator applies a mode-canceling force, f ⋁ m ⁢ ⁢ c , on arm assembly such that the gain and phase of one or more vibrational modes are canceled.
摘要翻译：具有臂组件的盘驱动器，其具有诸如VCM的主要致动器和诸如PZT的模式消除致动器，其安装在以使得模式消除致动器中的应变与摇摆变形相同的位置通过臂组件的振动模式产生的主致动器。主辅助致动器被驱动以在臂组件上施加一次力，而次级驾驶员确保模式消除致动器在臂组件上施加减震力，使得一个或多个振动模式的增益和相位被取消。

2. 发明授权

US6104581A Dual coil rotary actuator 有权
标题翻译：双线圈旋转执行器
公开(公告)号：US6104581A
公开(公告)日：2000-08-15
申请号：US167127
申请日：1998-10-05
申请人： Fu-Ying Huang , Wayne Isami Imaino , Jiann-Chang Lo , Roger William Wood
发明人： Fu-Ying Huang , Wayne Isami Imaino , Jiann-Chang Lo , Roger William Wood
IPC分类号： G11B21/02 , G11B5/48 , G11B5/55 , G11B21/08
CPC分类号： G11B5/5521 , G11B5/4806
摘要： An actuator assembly having two coils disposed between the poles of a voice coil motor (VCM) magnet for improved dynamic performance during settling and tracking operations in a disk drive. The two coils in the VCM are connected to separate current sources to allow the current flow in the two coils to have the same sense (clockwise or counterclockwise) or the opposite sense with respect to each other. When the current flows in the two coils have the opposite sense, excitation of the principal in-plane bending mode resonance of the actuator assembly is suppressed allowing the use of an increased servo bandwidth for settling and tracking operations of the disk drive. During seek operations of the disk drive, where maximum torque on the actuator is desirable, the coil currents in the two coils are chosen to have the same sense so that the forces on the actuator from the two coils are additive.
摘要翻译：具有设置在音圈电机（VCM）磁体的极之间的两个线圈的致动器组件，用于在磁盘驱动器中的稳定和跟踪操作期间改善动态性能。 VCM中的两个线圈连接到单独的电流源，以允许两个线圈中的电流具有相同的感测（顺时针或逆时针）或相对于彼此的相反感。当两个线圈中的电流流动具有相反的感觉时，致动器组件的主要的平面内弯曲模式谐振的激励被抑制，从而可以使用增加的伺服带宽来进行磁盘驱动器的稳定和跟踪操作。在磁盘驱动器的寻道操作期间，在执行器上的最大扭矩是期望的，两个线圈中的线圈电流被选择为具有相同的感测，使得来自两个线圈的致动器上的力是相加的。

3. 发明授权

US6100623A Piezoelectric actuator for control and displacement sensing 失效
标题翻译：用于控制和位移检测的压电致动器
公开(公告)号：US6100623A
公开(公告)日：2000-08-08
申请号：US139541
申请日：1998-08-25
申请人： Fu-Ying Huang , Wayne Isami Imaino , Jiann-Chang Lo
发明人： Fu-Ying Huang , Wayne Isami Imaino , Jiann-Chang Lo
IPC分类号： G11B5/55 , H01L41/04 , H02N2/06 , H01L41/08
CPC分类号： G11B5/4873 , H02N2/062 , G11B5/5552
摘要： A system and method for using a piezoelectric (PZT) element to simultaneously actuate and sense a displacement of an arm assembly; e.g., an assembly for reading and writing data in a storage medium. The simultaneous actuating and sensing function of the PZT is achieved by adding a high-frequency excitation to a control signal which actuates the PZT. The control signal and the high-frequency excitation cause deformation of the PZT translating into arm displacement and cause the generation of an electrical response signal by the PZT. A bridge which simulates the reactance/resistance of the PZT receives the response signal and derives from it the displacement of the arm assembly. Suitable compensation techniques for active control of the PZT and for mitigation of mechanical vibrations and other disturbances experienced by the arm assembly may then be implemented based on the displacement.
摘要翻译：一种用于使用压电（PZT）元件来同时致动并感测臂组件的位移的系统和方法; 例如用于在存储介质中读取和写入数据的组件。通过向驱动PZT的控制信号增加高频激励来实现PZT的同时启动和检测功能。控制信号和高频激励导致PZT转变为臂位移的变形，并引起PZT产生电响应信号。模拟PZT的电抗/电阻的桥梁接收响应信号，并从其中得出臂组件的位移。然后可以基于位移来实现用于PZT的主动控制和用于减轻臂组件经历的机械振动和其他干扰的合适的补偿技术。

4. 发明授权

US06667998B1 Thermoelectric cooler linearization in a tunable laser 有权
标题翻译：可调谐激光器中的热电冷却器线性化
公开(公告)号：US06667998B1
公开(公告)日：2003-12-23
申请号：US10396930
申请日：2003-03-24
申请人： Jiann-Chang Lo , Mark S. Rice
发明人： Jiann-Chang Lo , Mark S. Rice
IPC分类号： H01S304
CPC分类号： H01S5/02415 , H01S5/02248 , H01S5/02438 , H01S5/06837 , H01S5/0687 , H01S5/141
摘要： A method for tuning a laser via a temperature control loop that linearizes a non-linear characteristic of a thermal electric cooler (TEC) element used to adjust the temperature of tuning components and corresponding laser apparatus. One or more TEC elements are thermally coupled to respective tuning components, such as etalon filters. The TEC elements provide a heat transfer function (cooling rate) in response to a received electrical input (drive signal), wherein the relationship between the cooling rate and the drive signal is non-linear. An un-compensated drive signal produced by the control loop is compensated such that the open loop gain of the control loop is linearized via a linearizer control block. In effect, the non-linear transfer function of the TEC element is cancelled out by the linearizer control block to produce a linear relationship between the cooling rate and the drive signal. This open loop gain linearization enables tuning events such as channel slewing, and laser start-up operations to be performed with reduced tuning overshoots and undershoots that would otherwise result from the non-linear TEC transfer function characteristic.
摘要翻译：一种用于通过线性化用于调节调谐组件和对应的激光装置的温度的热电冷却器（TEC）元件的非线性特性的温度控制回路来调谐激光的方法。一个或多个TEC元件热耦合到相应的调谐组件，例如标准具过滤器。 TEC元件响应于接收的电输入（驱动信号）提供传热功能（冷却速率），其中冷却速率与驱动信号之间的关系是非线性的。由控制环路产生的未补偿的驱动信号被补偿，使得控制回路的开环增益通过线性化控制块线性化。实际上，TEC元件的非线性传递函数被线性化器控制块消除，以产生冷却速率和驱动信号之间的线性关系。这种开环增益线性化使得可以执行调谐事件，例如通道回转和激光启动操作，同时以非线性TEC传递功能特性导致的调谐过冲和欠冲调降。

5. 发明授权

US5804982A Miniature probe positioning actuator 失效
标题翻译：微型探头定位执行器
公开(公告)号：US5804982A
公开(公告)日：1998-09-08
申请号：US451634
申请日：1995-05-26
申请人： Jiann-Chang Lo , Michael Servedio , James Michael Hammond
发明人： Jiann-Chang Lo , Michael Servedio , James Michael Hammond
IPC分类号： G01L1/00 , G01R1/06 , G01R1/067 , G01R31/28 , G05D3/00 , H01L21/66
CPC分类号： G01R1/06705
摘要： Disclosed is a Mini Probe Positioning Actuator which is low in cost and mass, capable of high accelerations, relatively long stroke and compact packaging. The probe positioning actuator is composed of a pair of substantially parallel cantilevered beams, each beam being comprised of flexible, signal carrying cable formed of a polyimide composition which allows for the probe tip to be suspended from and form part of the armature of the actuator. The armature also includes a pair of oppositely wound coils intermediate the beams, which coils coact electromagnetically with a pair of spaced apart but fixedly positioned (relative to the coils/armature) magnets forming a motor for effecting armature and thus probe tip movement. The light mass of the coils and armature and the dual functional purpose of the suspension beams serves to make the probe actuator highly accurate and sensitive while allowing for reliable operation.
摘要翻译：公开了一种小型探头定位致动器，其成本和质量低，能够高加速度，相对较长的行程和紧凑的包装。探针定位致动器由一对基本上平行的悬臂梁组成，每个梁由柔性的由聚酰亚胺组合物形成的信号承载电缆组成，其允许探针尖端悬挂在驱动器的电枢上并形成其一部分。电枢还包括一对相对缠绕的线圈，该线圈在电磁线圈共同电磁地与一对间隔开但固定地定位（相对于线圈/电枢）磁体形成用于实现电枢并因此探测尖端运动的电动机。线圈和电枢的轻质量以及悬挂梁的双重功能用于使探头致动器高度精确和灵敏，同时允许可靠的操作。

6. 发明授权

US5631856A Test sequence optimization process for a circuit tester 失效
标题翻译：电路测试仪的测试序列优化过程
公开(公告)号：US5631856A
公开(公告)日：1997-05-20
申请号：US373338
申请日：1995-01-17
申请人： Steven A. Keller , Jiann-Chang Lo , James C. Mahlbacher
发明人： Steven A. Keller , Jiann-Chang Lo , James C. Mahlbacher
IPC分类号： G01R1/04 , G01R1/067 , G01R15/12
CPC分类号： G01R1/04 , G01R1/06705
摘要： The sequential order of movements of a number of probes within a circuit test fixture is optimized through the use of an algorithm which sequentially orders test configurations provided in an input list. Each test configuration corresponds to the locations of probes within the fixture as a particular test is performed. In a first pass of the algorithm, for each test configuration, every other test configuration is considered as a next move candidate for which a weighted distance is calculated from the test configuration. Weighting factors reflect the degree of difficulty in moving one direction instead of another. A need to move one probe before another or to move in one direction before another, in order to prevent a collision within the test fixture, is also considered. A predetermined number of next move candidates having the lowest weighted distances are placed in an intermediate list for the test configuration. In a second pass of the algorithm, test configurations are linked, one to another, to form a list reflecting a preferred order of probe movement. In the process of linking with a test configuration, the available next move candidate having the shortest weighted distance is chosen from the intermediate list of the test configuration. If no available next move candidates remain in the intermediate list, the process returns to the first pass of the algorithm to get more next move candidates. Additionally, the algorithm is used to sequentially order individual points for a test fixture having only a single probe.
摘要翻译：通过使用顺序地对输入列表中提供的测试配置进行排序的算法来优化电路测试夹具内的多个探针的顺序顺序。执行特定测试时，每个测试配置对应于夹具内探头的位置。在算法的第一遍中，对于每个测试配置，每个其他测试配置被认为是从测试配置计算加权距离的下一个移动候选。加权因素反映了移动一个方向而不是另一个方向的困难程度。还需要将一个探针移动到另一个之前或者在另一个方向上移动到另一个之前，以便防止测试夹具内的碰撞。具有最低加权距离的预定数量的下一移动候选者被放置在测试配置的中间列表中。在算法的第二遍中，测试配置彼此相连，以形成反映探测器移动的优选顺序的列表。在与测试配置链接的过程中，从测试配置的中间列表中选择具有最短加权距离的可用下一移动候选。如果没有可用的下一个移动候选者保留在中间列表中，则该过程返回到算法的第一遍，以获得更多的下一移动候选。另外，该算法用于顺序地排列仅具有单个探针的测试夹具的单个点。

7. 发明授权

US06252414B1 Method and apparatus for testing circuits having different configurations with a single test fixture 失效
标题翻译：用单个测试夹具测试具有不同结构的电路的方法和装置
公开(公告)号：US06252414B1
公开(公告)日：2001-06-26
申请号：US09140225
申请日：1998-08-26
申请人： James Edward Boyette, Jr. , Jiann-Chang Lo , Yuet-Ying Yu
发明人： James Edward Boyette, Jr. , Jiann-Chang Lo , Yuet-Ying Yu
IPC分类号： G01R3102
CPC分类号： G01R31/2884
摘要： A fixture for testing circuits includes a rectangular array of conductive test pads, alternating with insulating areas in a checkerboard-like pattern. In a first embodiment, the entire array is printed on a central portion of a plastic membrane, with outer portions of the membrane carrying electrical lines from the test pads to connectors. In a second embodiment, the rectangular array is formed on surfaces of a number of closely packet plastic membranes, each of which has tabs extending away from the testing surface to connectors. The test fixture is generic, not being configured for testing a particular circuit configuration. To compensate for conditions of linear misalignment, the rectangular array is moved in a raster pattern having a size equal to the cell size of the rectangular array. To compensate for conditions of angular misalignment, the array may be rotated after such misalignment is measured, or test results may be compared with exemplary data for a number of misalignment conditions.
摘要翻译：用于测试电路的夹具包括导电测试焊盘的矩形阵列，与棋盘状图案的绝缘区域交替。在第一实施例中，整个阵列印刷在塑料膜的中心部分上，膜的外部部分将电线从测试垫传送到连接器。在第二实施例中，矩形阵列形成在多个紧密包装的塑料膜的表面上，每个塑料膜具有从测试表面延伸到连接器的突出部。测试夹具是通用的，未配置用于测试特定的电路配置。为了补偿线性未对准的条件，矩形阵列以尺寸等于矩形阵列的单元大小的光栅图案移动。为了补偿角度未对准的情况，可以在测量这种不对准之后旋转阵列，或者可以将测试结果与许多不对准条件的示例性数据进行比较。

8. 发明授权

US06201383B1 Method and apparatus for determining short circuit conditions using a gang probe circuit tester 失效
标题翻译：使用组合探头电路测试仪确定短路条件的方法和装置
公开(公告)号：US06201383B1
公开(公告)日：2001-03-13
申请号：US09010910
申请日：1998-01-22
申请人： Jiann-Chang Lo , James Christopher Mahlbacher
发明人： Jiann-Chang Lo , James Christopher Mahlbacher
IPC分类号： G01R1900
CPC分类号： G01R1/07385 , G01R31/024
摘要： A method for determining whether short circuits exist among networks within a circuit under test includes bringing test probes into contact with each such network and switching groups of the test probes among two sides of a test circuit so that current flows through the testing circuit only when one of the test probes connected to one side of the testing circuit is connected by means of a short circuit to one of the test probes connected to the other side of the test circuit. This first test process establishes the fact that a short circuit exists without determining which networks are connected by the short circuit. A version of this method subsequently applies tests to individual networks to make this determination, in the event that a short circuit is found to exist by the first test process. Other versions of this method additionally determine which networks are connected to which other networks by short circuits.
摘要翻译：一种用于确定被测电路内的网络之间是否存在短路的方法，包括使测试探针与每个这样的网络接触，并且在测试电路的两侧之间切换测试探针组，使得电流仅在一个连接到测试电路一侧的测试探头通过短路连接到连接到测试电路另一侧的测试探头之一。该第一测试过程确定了短路存在而不确定通过短路连接哪些网络的事实。该方法的一个版本随后在第一个测试过程发现存在短路的情况下，将测试应用于各个网络进行此确定。该方法的其他版本另外确定哪些网络通过短路连接到哪个其他网络。

9. 发明授权

US5775567A Apparatus for wirebonding using a tubular piezoelectric ultrasonic transducer 失效
标题翻译：使用管状压电超声换能器进行引线接合的装置
公开(公告)号：US5775567A
公开(公告)日：1998-07-07
申请号：US616128
申请日：1996-03-14
申请人： Jiann-Chang Lo , Michael Servedio
发明人： Jiann-Chang Lo , Michael Servedio
IPC分类号： B23K20/00 , B23K20/10
CPC分类号： H01L24/85 , B23K20/005 , H01L24/78 , H01L2224/45144 , H01L2224/48091 , H01L2224/48472 , H01L2224/78302 , H01L2224/78347 , H01L2224/85203 , H01L2224/85205 , H01L24/45 , H01L2924/01006 , H01L2924/01013 , H01L2924/01015 , H01L2924/01023 , H01L2924/01028 , H01L2924/01033 , H01L2924/01074 , H01L2924/01079 , H01L2924/01082 , H01L2924/14 , H01L2924/19041 , H01L2924/19043
摘要： In ultrasonic wirebonding apparatus, vibrations produced using a tubular piezoelectric (piezoceramic) actuator, driven by electrical current at an ultrasonic frequency, are used to provide energy for the wirebonding process. An assembly including means for mounting the actuator at a proximal end, the actuator itself, and a bonding tip extending from a distal end of the actuator, are moved by a carrier between the various points at which wirebonding is to occur. The bonding wire is fed through a passageway in this assembly. The carrier slides on a first carriage for movement into engagement with the workpiece. The first carriage slides in a first direction on a second carriage, which in turn slides in a second direction, to move between points at which wirebonding is to occur. The workpieces, such as circuit chips being manufactured, are moved into a workspace for wirebonding, are held therein during processing, and are subsequently removed from the workspace.
摘要翻译：在超声波引线接合装置中，使用由超声频率的电流驱动的管状压电（压电陶瓷）致动器产生的振动用于为引线接合工艺提供能量。包括用于将致动器安装在近端的装置，致动器本身以及从致动器的远端延伸的接合末端通过载体在要发生引线接合的各个点之间移动。接合线通过该组件中的通道进给。载体在第一滑架上滑动以与工件接合。第一托架在第二托架上沿第一方向滑动，第二托架又沿第二方向滑动，以在要进行引线接合的点之间移动。工件（例如制造的电路芯片）被移动到用于引线接合的工作空间中，在处理期间被保持在其中，并随后从工作空间中移除。

10. 发明申请

US20080159340A1 External cavity laser tuning element dither servo control 有权
标题翻译：外腔激光调谐元件抖动伺服控制
公开(公告)号：US20080159340A1
公开(公告)日：2008-07-03
申请号：US11647783
申请日：2006-12-29
申请人： Andrew Daiber , Anand S. Ramalingam , Jiann-Chang Lo , Douglas A. Sprock , William B. Chapman
发明人： Andrew Daiber , Anand S. Ramalingam , Jiann-Chang Lo , Douglas A. Sprock , William B. Chapman
IPC分类号： H01S3/106
CPC分类号： H01S5/141 , H01S3/1062 , H01S5/02248 , H01S5/02415 , H01S5/02438 , H01S5/0617 , H01S5/06804 , H01S5/0687
摘要： According to embodiments of the present invention, an external cavity laser includes one or more tuning elements. At least one modulated voltage signal or dither is used to lock the transmission peak of the two tuning elements to each other. The wavelength of the laser also may lock onto the lock transmission peaks. In embodiments in which two dither signals are used, the dither signals may be orthogonal to or independent of each other. The two dither signals may produce two control signals to align the transmission peak of one filter to the transmission peak of another filter and the lasing mode of the laser to the aligned filters.
摘要翻译：根据本发明的实施例，外腔激光器包括一个或多个调谐元件。使用至少一个调制电压信号或抖动来将两个调谐元件的传输峰值彼此锁定。激光器的波长也可能锁定在锁定传输峰值上。在使用两个抖动信号的实施例中，抖动信号可以彼此正交或彼此独立。两个抖动信号可以产生两个控制信号，以将一个滤波器的传输峰值与另一个滤波器的传输峰值对齐，并将激光器的激光模式对齐到对准的滤波器。

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