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1.发明授权公开(公告)号：US06714338B2
公开(公告)日：2004-03-30
申请号：US10146758
申请日：2002-05-16
IPC分类号： G02B2600
CPC分类号： G02B26/0833
摘要： A technique that reduces or eliminates the non-linearities associated with the internal feedback sensor used in a micro-electro-mechanical mirror assembly. Using the relatively linear response of the mirror positioning motor, associated driver electronics, and the mirror itself, a calibration is performed that compensates for the internal feedback sensor non-linearity. An expected position can then be calculated simply by multiplying the gain of the system by the output, due to the good inherent linearity in the system. The calibration will compare measured versus expected position criteria for a predefined set of constant outputs. The data will form a look-up table that will be used to correct for the sensor non-linearities.
摘要翻译： 减少或消除与微机电反射镜组件中使用的内部反馈传感器相关联的非线性的技术。 使用反射镜定位电动机，相关联的驱动器电子装置和镜子本身的相对线性的响应，执行补偿内部反馈传感器非线性的校准。 由于系统内部线性良好，所以可以简单地通过将系统的增益乘以输出来计算预期位置。 校准将比较预定义的一组常数输出的测量与预期位置标准。 数据将形成一个查找表，用于校正传感器的非线性。
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公开(公告)号：US07352691B2
公开(公告)日：2008-04-01
申请号：US11010087
申请日：2004-12-10
申请人： Mark D. Hagen , Mark D. Heminger
发明人： Mark D. Hagen , Mark D. Heminger
CPC分类号： H04L27/261
摘要： A method that allows a digital communications system to detect the presence of transmitted messages in noisy environments. The system includes an OFDM transmitter and an OFDM receiver. The OFDM transmitter converts a digital signal to be transmitted to a plurality of sub-signals, each corresponding to a respective sub-carrier frequency. The signal is a packet including a preamble field having a known data pattern. The transmitter pre-codes the preamble data pattern, maps the data to corresponding phase information, converts the sub-signals to the time domain, and converts the sub-signals to analog form for subsequent transmission. The OFDM receiver receives the transmitted sub-signals, converts the sub-signals to digital form, converts the sub-signals to the frequency domain, and subjects the sub-signals to preamble detection processing to detect the signals' presence. By pre-coding the preamble data pattern and defining the received sub-signals in terms of the phase difference between adjacent sub-carriers, the detection of the transmitted messages can be performed in a manner that is insensitive to phase offset.
摘要翻译： 一种允许数字通信系统在嘈杂环境中检测发送的消息的存在的方法。 该系统包括OFDM发射机和OFDM接收机。 OFDM发送器将要发送的数字信号转换成多个子信号，每个子信号对应于相应的子载波频率。 信号是包括具有已知数据模式的前同步码字段的分组。 发射机预编码前导码数据模式，将数据映射到对应的相位信息，将子信号转换为时域，并将子信号转换为模拟形式用于随后的传输。 OFDM接收机接收发送的子信号，将子信号转换为数字形式，将子信号转换为频域，并对子信号进行前导码检测处理，以检测信号的存在。 通过对前导码数据模式进行预编码并根据相邻子载波之间的相位差定义接收的子信号，可以以对相位偏移不敏感的方式来执行所发送的消息的检测。
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3.发明授权System and method of implementing variable loop gain in an optical wireless link based on distance 有权基于距离的光无线链路实现可变环路增益的系统和方法公开(公告)号：US07215888B2
公开(公告)日：2007-05-08
申请号：US10103401
申请日：2002-03-21
IPC分类号： H04B10/00
CPC分类号： H04B10/1141
摘要： A system and method of varying the control loop gain of an optical wireless communication link between a transmitting station and a receiving station as an inverse function of distance between the transmitting station and the receiving station to allow the optical wireless communication link to be used reliably over a wide range of distances.
摘要翻译： 将发送站和接收站之间的光无线通信链路的控制环路增益改变为发送站与接收站之间的距离的反向函数以允许光无线通信链路可靠地使用的系统和方法 距离范围很广。
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公开(公告)号：US06847754B2
公开(公告)日：2005-01-25
申请号：US10151787
申请日：2002-05-20
CPC分类号： G02B6/359 , G02B6/3518 , G02B26/0833
摘要： A method of moving a MEM system mirror in a well defined trajectory that allows longer seeks to be used to reach a target position as compared with known methods that employ small step sizes due to lack of well defined seek trajectories. One method uses the same seek trajectory (scaled in amplitude for seek length) for both axes (x-axis and y-axis) associated with the MEM mirror. This forces both axes to take the same length of time and to use the same “shape” to perform the move, and results in a straight line path between two points. Multiple straight line moves can be employed to provide a more complex trajectory. Another method uses a different trajectory with the same length, but a different shape, for each axis to force the MEM mirror along substantially any desired path such as an arc and/or straight line, among others.
摘要翻译： 与已知方法相比，由于缺少明确的搜索轨迹，使用较小步长的方法，可以将OM系统反射镜移动到明确定义的轨迹中，该轨迹允许更长时间寻求用于达到目标位置。 对于与MEM镜相关联的两个轴（x轴和y轴），一种方法使用相同的寻道轨迹（寻道长度的幅度缩放）。 这会强制两个轴采取相同的时间长度，并使用相同的“形状”来执行移动，并导致两点之间的直线路径。 可以采用多条直线移动来提供更复杂的轨迹。 另一种方法使用具有相同长度的不同轨迹，但是不同的形状，对于每个轴来迫使MEM镜沿着基本上任何期望的路径，诸如弧和/或直线等。
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5.发明授权公开(公告)号：US06708082B2
公开(公告)日：2004-03-16
申请号：US10162482
申请日：2002-06-03
IPC分类号： G05B1500
CPC分类号： G02B26/0841
摘要： A method of adjusting a MEMS mirror control system is provided to calibrate a MEMS mirror control system to a particular MEMS mirror in a fashion that optimizes MEMS mirror control loop performance. This calibration is implemented by measuring the gain and resonant frequency of the particular MEMS mirror, and adjusting one or more of the parameters used in the implementation of a PID controller, a state estimator, and a feed forward component used to perform seeks.
摘要翻译： 提供了一种调整MEMS镜面控制系统的方法，以优化MEMS镜面控制回路性能的方式将MEMS反射镜控制系统校准到特定的MEMS反射镜。 该校准通过测量特定MEMS镜的增益和谐振频率以及调整用于执行PID控制器，状态估计器和用于执行寻找的前馈分量的一个或多个参数来实现。
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公开(公告)号：US07391975B2
公开(公告)日：2008-06-24
申请号：US10134763
申请日：2002-04-29
IPC分类号： H04B10/00
CPC分类号： H04J3/0664
摘要： A technique for synchronizing the servo control systems between two optical wireless links (OWLs) that are in communication with one another. This synchronization allows the alignment in time of the various tasks to be assigned in a desired time period. The synchronization is not intended to synchronize the two OWLs down to the processor clock level, but rather at the servo sampling level, preferably to within a few percent of the servo sampling time. This synchronization may be advantageous in improving processor efficiency and control loop performance, and or improving system calibrations.
摘要翻译： 一种用于在彼此通信的两个光无线链路（OWL）之间同步伺服控制系统的技术。 该同步允许在期望的时间段内分配各种任务的时间的对准。 同步并不旨在将两个OWL同步到处理器时钟电平，而是在伺服采样级别，优选地在伺服采样时间的百分之几内。 这种同步可能有利于提高处理器效率和控制环路性能，或改善系统校准。
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7.发明授权Disk drive with seek profile selection based on a queued vs. non-queued environment 有权基于排队和非排队环境的磁盘驱动器，具有搜索配置文件选择公开(公告)号：US06195222B1
公开(公告)日：2001-02-27
申请号：US09186786
申请日：1998-11-04
IPC分类号： G11B5596
CPC分类号： G11B5/5547
摘要： A disk drive and method of optimizing data access time by selecting a seek profile and/or settle criteria based on a queued or non-queued environment. The disk drive includes an actuator and a servo system, wherein the servo system is directed to move the actuator as a result of an input/output command received from a host by an interface processor. The disk drive may execute the input/output commands in a queued or non-queued environment. The servo system commands the actuator to perform a seek using a seek profile and defines settling criteria for the seek operation. The seek profile includes an acceleration profile and a deceleration profile. The method includes the step of providing a queued seek profile and a queued settling criteria for a seek used to position the actuator to execute a command in a queued environment. A non-queued seek profile and a non-queued settling criteria are defined for a seek used to position the actuator to execute a command in a non-queued environment, the non-queued seek profile being different than the queued seek profile. Seeks are performed using the queued seek profile and settling criteria and the non-queued seek profile and settling criteria. Optionally, the queued settling criteria is different than the non-queued settling criteria.
摘要翻译： 一种磁盘驱动器和通过基于排队或未排队的环境来选择搜索简档和/或结算标准来优化数据访问时间的方法。 磁盘驱动器包括致动器和伺服系统，其中伺服系统被引导为通过接口处理器从主机接收的输入/输出命令的结果来移动致动器。 磁盘驱动器可以在排队或未排队的环境中执行输入/输出命令。 伺服系统命令致动器使用寻道轮廓执行寻道，并定义寻道操作的稳定准则。 寻道曲线包括加速度曲线和减速曲线。 该方法包括提供排队的搜索简档和排队的建立标准的步骤，用于用于定位致动器以在排队的环境中执行命令的搜索的排队的建立准则。 对于用于定位致动器以在非排队环境中执行命令的搜索来定义非排队寻求简档和非排队的建立标准，非排队寻找简档不同于排队的搜索简档。 搜索使用排队的查询简档和结算标准以及非排队查找配置文件和结算标准来执行。 可选地，排队的结算标准与非排队的结算标准不同。
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