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1. 发明授权

US08847531B2 Sample and hold time stamp for sensing zero crossing of back electromotive force in 3-phase brushless DC motors 有权
标题翻译：用于感应三相无刷直流电机中反电动势过零点的采样和保持时间戳
公开(公告)号：US08847531B2
公开(公告)日：2014-09-30
申请号：US13740066
申请日：2013-01-11
申请人： IXYS CH GmbH
发明人： Rex L. Allison, III
IPC分类号： H02P6/18
CPC分类号： H02P6/182
摘要： A microcontroller determines the position of the rotor of a brushless, direct-current motor by determining the time of zero crossing of back electromotive force (EMF) emanating from the non-driven phase winding. The zero crossing point is determined by interpolating voltage differentials that are time stamped. Each voltage differential is the difference between the phase voltage of the phase winding and the motor neutral point voltage. The time of zero crossing is determined without using a comparator and without interrupting the processor at each zero crossing point. The processor interpolates the time of zero crossing independently of when the zero crossing point occurs. A hold signal conductor is connected both to a sample and hold circuit and to the load input lead of a time stamp register. The microcontroller simultaneously captures a phase voltage in the sample and hold circuit and a timer count in the time stamp register.
摘要翻译：微控制器通过确定从非驱动相绕组发出的反电动势（EMF）的零交叉时间来确定无刷直流电动机的转子的位置。通过内插时间戳的电压差来确定过零点。每个电压差是相绕组的相电压和电机中性点电压之间的差值。在不使用比较器的情况下确定过零时间，并且在每个过零点处不中断处理器。该处理器独立于过零点发生时内插过零时间。保持信号导体连接到采样保持电路和时间戳寄存器的负载输入引线。微控制器同时捕获采样和保持电路中的相电压以及时间戳寄存器中的定时器计数。

2. 发明授权

US08358093B1 Sample and hold time stamp for sensing zero crossing of back elecromotive force in 3-phase brushless DC motors 有权
标题翻译：用于感应三相无刷直流电动机中背电动势的零交叉的采样和保持时间戳
公开(公告)号：US08358093B1
公开(公告)日：2013-01-22
申请号：US13134141
申请日：2011-05-31
申请人： Rex L. Allison, III
发明人： Rex L. Allison, III
IPC分类号： H02P6/18
CPC分类号： H02P6/182
摘要： A microcontroller determines the position of the rotor of a brushless, direct-current motor by determining the time of zero crossing of back electromotive force (EMF) emanating from the non-driven phase winding. The zero crossing point is determined by interpolating voltage differentials that are time stamped. Each voltage differential is the difference between the phase voltage of the phase winding and the motor neutral point voltage. The time of zero crossing is determined without using a comparator and without interrupting the processor at each zero crossing point. The processor interpolates the time of zero crossing independently of when the zero crossing point occurs. A hold signal conductor is connected both to a sample and hold circuit and to the load input lead of a time stamp register. The microcontroller simultaneously captures a phase voltage in the sample and hold circuit and a timer count in the time stamp register.
摘要翻译：微控制器通过确定从非驱动相绕组发出的反电动势（EMF）的零交叉时间来确定无刷直流电动机的转子的位置。通过内插时间戳的电压差来确定过零点。每个电压差是相绕组的相电压和电机中性点电压之间的差值。在不使用比较器的情况下确定过零时间，并且在每个过零点处不中断处理器。该处理器独立于过零点发生时内插过零时间。保持信号导体连接到采样保持电路和时间戳寄存器的负载输入引线。微控制器同时捕获采样和保持电路中的相电压以及时间戳寄存器中的定时器计数。

3. 发明授权

US08320428B1 Spread spectrum clock generator with controlled delay elements 有权
标题翻译：具有受控延迟元件的扩频时钟发生器
公开(公告)号：US08320428B1
公开(公告)日：2012-11-27
申请号：US12803100
申请日：2010-06-19
申请人： Hide Hattori
发明人： Hide Hattori
IPC分类号： H04B1/69
CPC分类号： H04B15/02 , H04B2215/067
摘要： A programmable spread spectrum clock generator (SSCG) reduces electromagnetic interference by spreading the frequency bandwidth of an output signal. The rate at which the frequency of the output signal changes, as well as other aspects of the output signal, are software programmable. The programmable SSCG receives a periodic signal whose cycles have substantially identical periods and outputs the output signal whose cycles have periods that vary smoothly over a plurality of cycles of the periodic signal. The programmable SSCG generates a control signal using the periodic signal. The programmable SSCG includes a variable delay element that generates the output signal by delaying the periods of the periodic signal based on the magnitude of the control signal. The output signal is generated without using a phase locked loop. Moreover, successive cycles of the output signal rarely have identical periods.
摘要翻译：可编程扩频时钟发生器（SSCG）通过扩展输出信号的频率带宽来降低电磁干扰。输出信号频率变化的速率以及输出信号的其他方面都是可编程的。可编程SSCG接收周期信号，其周期具有基本相同的周期，并输出周期具有在周期信号的多个周期内平滑变化的周期的输出信号。可编程SSCG使用周期信号产生控制信号。可编程SSCG包括可变延迟元件，其通过基于控制信号的幅度延迟周期信号的周期来产生输出信号。在不使用锁相环的情况下生成输出信号。此外，输出信号的连续周期很少具有相同的周期。

4. 发明申请

US20120235740A1 Low-Cost Magnetic Stripe Reader Using Independent Switching Thresholds 有权
标题翻译：低成本磁条读取器使用独立的开关阈值
公开(公告)号：US20120235740A1
公开(公告)日：2012-09-20
申请号：US13482991
申请日：2012-05-29
申请人： Hoang Minh Pinai
发明人： Hoang Minh Pinai
IPC分类号： H03G3/20 , H03F1/00
CPC分类号： G06K7/084
摘要： A F/2F waveform generator has a comparator and an analog multiplexer. In a low-cost magnetic card reader application, a magnetic track signal is amplified, filtered, and compared with a threshold signal to create a digital signal output. The analog multiplexer detects changes in state of the digital signal. When a change of state is detected, the analog multiplexer switches among dynamically tunable threshold signals. The selected threshold signal is used for comparison with the magnetic track signal. Switching level detection enables accurate F/2F waveform generation from relatively noisy magnetic track signals, thus improving the robustness of magnetic card readers. The analog implementation eliminates the need for expensive A/D conversion and processing and the design can be readily implemented in a very compact and low-cost package.
摘要翻译： F / 2F波形发生器具有比较器和模拟多路复用器。在低成本的磁卡阅读器应用中，磁道信号被放大，滤波，并与阈值信号进行比较以产生数字信号输出。模拟多路复用器检测数字信号状态的变化。当检测到状态改变时，模拟多路复用器在动态可调阈值信号之间切换。选择的阈值信号用于与磁道信号进行比较。开关电平检测可以从相对嘈杂的磁道信号产生精确的F / 2F波形，从而提高磁卡读卡器的鲁棒性。模拟实现消除了昂贵的A / D转换和处理的需要，并且可以以非常紧凑和低成本的封装容易地实现设计。

5. 发明授权

US08269562B1 Open-loop transimpedance amplifier for infrared diodes 有权
公开(公告)号：US08269562B1
公开(公告)日：2012-09-18
申请号：US11479037
申请日：2006-06-30
申请人： David R. Staab
发明人： David R. Staab
IPC分类号： H03F3/08
CPC分类号： H03F3/082
摘要： A microcontroller integrated circuit includes an open-loop transimpedance amplifier (OLTA). An input lead of the OLTA is a terminal of the microcontroller. The cathode of a photodiode is connected to VDD and the anode is connected to the terminal. The OLTA maintains the photodiode in a strongly reverse-biased condition, thereby keeping diode capacitance low and facilitating rapid circuit response. The input of the OLTA involves a diode-connected field effect transistor that provides a low impedance. This low impedance decreases as the diode current increases, thus providing effective clamping of the voltage on the terminal. By this clamping, the amount of photodiode capacitance discharging necessary when transitioning from a high input current condition to a low input current condition is reduced, thereby further improving amplifier response time. The OLTA is small and consumes less than thirty microamperes and functions to mirror photodiode current and compare to a predetermined level.

6. 发明授权

US08184674B2 Time-hopping low-power wireless network for turning off and on fluorescent lamps 有权
标题翻译：跳时低功率无线网络，用于关闭和关闭荧光灯
公开(公告)号：US08184674B2
公开(公告)日：2012-05-22
申请号：US12587106
申请日：2009-09-30
申请人： Steven M. Pope
发明人： Steven M. Pope
IPC分类号： H04B1/00
CPC分类号： H04W52/0229 , G08C17/02 , G08C2201/12 , H04W74/085 , H04W84/20 , H05B37/0272 , Y02D70/142 , Y02D70/144 , Y02D70/162
摘要： A low-power wireless network involves a master and a plurality of RF-enabled fluorescent lamp starter units. In each of a plurality of intervals, a starter wakes up and listens for a beacon, regardless of whether a beacon is transmitted during that interval or not. The starter operates in a low power sleep mode during the majority of the interval. The master can transmit during the beacon slot time of any interval, but typically only transmits frequently enough to maintain starter synchronization. If the master wishes to communicate with the starters with reduced latency, then the master can transmit a beacon in the next interval. Beacon slot time is varied within the interval (for example, from interval to interval or from group of intervals to group of intervals) in a pseudo-random time-hopping fashion known to both the starters and the master, thereby reducing persistence of collisions with similar networks.
摘要翻译：低功率无线网络涉及主机和多个启用RF的荧光灯起动器单元。在多个间隔的每一个中，启动器唤醒并监听信标，而不管在该间隔期间是否发送信标。在大部分间隔期间，起动器工作在低功耗睡眠模式。主机可以在任何间隔的信标时隙期间进行传输，但通常只能频繁地传输以维持起动器同步。如果主机希望与降低延迟的启动器通信，则主机可以在下一个间隔中发送信标。信标时隙时间在间隔（例如，从间隔到间隔或从间隔组到间隔组之间）以起始器和主器件已知的伪随机时间跳跃方式变化，由此减少与类似的网络。

7. 发明授权

US08058893B1 Frequency trimming for internal oscillator for test-time reduction 有权
标题翻译：用于内部振荡器的频率修整以减少测试时间
公开(公告)号：US08058893B1
公开(公告)日：2011-11-15
申请号：US12927843
申请日：2010-11-27
申请人： Paul G. Clark
发明人： Paul G. Clark
IPC分类号： G01R31/26 , G01R31/02
CPC分类号： G01R31/31908
摘要： An internal precision oscillator (IPO) is trimmed within a microcontroller integrated circuit. The microcontroller integrated circuit receives a test program into flash memory on the microcontroller integrated circuit from a tester. The microcontroller integrated circuit also receives a reference signal from the tester. The IPO generates a clock signal having a frequency that depends upon a trim value. A general purpose timer on the microcontroller integrated circuit counts the number of cycles of the clock signal during a time period defined by the reference signal and outputs a digital value. A processor on the microcontroller integrated circuit executes the test program, reads the digital output, and adjusts the trim value such that the frequency of the clock signal is calibrated with respect to the reference signal. Test-time on the tester is reduced because the decision making during the frequency trimming process is made by the processor instead of the tester.
摘要翻译：内部精密振荡器（IPO）在微控制器集成电路内进行微调。微控制器集成电路从测试仪接收到微控制器集成电路上的闪存中的测试程序。微控制器集成电路还接收来自测试仪的参考信号。 IPO产生具有取决于修整值的频率的时钟信号。微控制器集成电路上的通用定时器在由参考信号定义的时间段内对时钟信号的周期数进行计数，并输出数字值。微控制器集成电路上的处理器执行测试程序，读取数字输出，并调整修整值，使得相对于参考信号校准时钟信号的频率。测试仪上的测试时间缩短了，因为在修整过程中的决策是由处理器而不是测试仪进行的。

8. 发明授权

US07884489B1 Press-fit integrated circuit package involving compressed spring contact beams 有权
标题翻译：压入式集成电路封装，包括压缩弹簧接触梁
公开(公告)号：US07884489B1
公开(公告)日：2011-02-08
申请号：US12657094
申请日：2010-01-12
申请人： Thomas Stortini , John A. Ransom
发明人： Thomas Stortini , John A. Ransom
IPC分类号： H01L23/52 , H01L23/48 , H01L29/40 , H01L23/495 , H01L23/485 , H01L23/498
CPC分类号： H01L23/49506 , H01L23/13 , H01L23/49541 , H01L23/49811 , H01L24/05 , H01L24/45 , H01L24/48 , H01L24/72 , H01L24/90 , H01L2224/0401 , H01L2224/16 , H01L2224/45144 , H01L2224/48091 , H01L2224/48247 , H01L2224/73251 , H01L2224/81901 , H01L2924/01005 , H01L2924/01006 , H01L2924/01013 , H01L2924/01029 , H01L2924/01033 , H01L2924/01047 , H01L2924/01074 , H01L2924/01077 , H01L2924/01079 , H01L2924/01082 , H01L2924/01327 , H01L2924/014 , H01L2924/14 , H01L2924/15747 , H01L2924/181 , H01L2924/00014 , H01L2924/00 , H01L2224/72
摘要： An insulative substrate includes a plurality of flexible retaining clips and a plurality of alignment and retaining pins. A metal leadframe includes a plurality of leads. Each lead terminates in a spring contact beam portion. The leadframe is attached to the substrate (for example, by fitting a hole in each lead over a corresponding alignment and retaining pin and then thermally deforming the pin to hold the lead in place). An integrated circuit is press-fit down through the retaining clips such that pads on the face side of the integrated circuit contact and compress the spring contact beams of the leads. After the press-fit step, the retaining clips hold the integrated circuit in place. The resulting assembly is encapsulated. In a cutting and bending step, the leads are singulated and formed to have a desired shape. The resulting low-cost package involves no wire-bonding and no flip-chip bond bump forming steps.
摘要翻译：绝缘衬底包括多个柔性保持夹和多个对准和保持销。金属引线框架包括多个引线。每个引线终止于弹簧接触梁部分。引线框架连接到基板上（例如，通过在相应的对准和固定销中的每个引线中安装一个孔，然后使引脚热变形以将引线保持在适当位置）。集成电路通过固定夹压配合使得集成电路的正面侧的焊盘接触并压缩引线的弹簧接触梁。在压配合步骤之后，固定夹将集成电路固定到位。所得组件被封装。在切割和弯曲步骤中，引线被切割并形成为具有期望的形状。所得到的低成本封装不涉及引线接合和没有倒装芯片接合凸块形成步骤。

9. 发明授权

US07865443B1 Method and system for electronic data sales and distribution over wide area networks 有权
标题翻译：广域网电子数据销售和分销方法与系统
公开(公告)号：US07865443B1
公开(公告)日：2011-01-04
申请号：US09654858
申请日：2000-09-05
申请人： Tony Altwies , Raymond Chock
发明人： Tony Altwies , Raymond Chock
IPC分类号： G06F17/00
CPC分类号： G06Q30/06
摘要： An Improved Method and System for Electronic Data Sales and Distribution over Wide Area Networks is disclosed. The preferred system and method divides the software or other data to be distributed into a separate licensing module and a program module, with each module being distributed separately. The preferred licensing module can be distributed by an e-commerce server over a wide-area network, while the program module is distributed by a separate server computer over the wide-area network (or other method). Furthermore, the software or other electronic data can be updated easily by simply updating the single repository of the program module, while leaving the licensing module(s) at each e-commerce server unchanged.
摘要翻译：公开了一种改进的广域网电子数据销售和分销方法与系统。首选的系统和方法将软件或其他数据分成单独的许可模块和程序模块，每个模块分开分发。首选的许可模块可以由电子商务服务器通过广域网分发，而程序模块由单独的服务器计算机通过广域网（或其他方法）分发。此外，通过简单地更新程序模块的单个存储库，同时将每个电子商务服务器处的许可模块保持不变，可以容易地更新软件或其他电子数据。

10. 发明授权

US09048949B1 Controlling transmission power in an IrDA/RC transmitter circuit 有权
标题翻译：控制IrDA / RC发射机电路中的发射功率
公开(公告)号：US09048949B1
公开(公告)日：2015-06-02
申请号：US13975299
申请日：2013-08-24
申请人： IXYS CH GmbH
发明人： Daniel SauFu Mui
IPC分类号： H04B10/114 , H04B10/11
CPC分类号： H04B10/11 , H04B10/114 , H04B10/1141
摘要： An infrared LED of an IrDA transceiver module is usable to transmit IrDA signals as well as RC control signals. When making an IrDA transmission, the IrDA LED is driven with a lower amount of current. When making an RC transmission, the IrDA LED is driven with an increased amount of current such that infrared emissions received by an RC receiver are of adequate power to be received as RC control signals. A current-limiting circuit allows more LED current to flow the longer current is allowed to flow through the IrDA LED. By controlling the durations of infrared bursts in the RC transmission, the average LED current during infrared bursts of RC transmissions is controlled. Using this technique allows the IrDA module to be used to transmit RC signals at different transmission power settings. To reduce power consumption, the minimum transmission power necessary to engage in RC communications is used.
摘要翻译： IrDA收发器模块的红外LED可用于传输IrDA信号以及RC控制信号。当进行IrDA传输时，IrDA LED以较低的电流驱动。当进行RC传输时，IrDA LED以增加的电流驱动，使得由RC接收器接收到的红外发射具有作为RC控制信号被接收的足够的功率。限流电路允许更多的LED电流流动，允许更长的电流流过IrDA LED。通过控制RC传输中的红外脉冲串的持续时间，控制RC传输的红外脉冲串期间的平均LED电流。使用这种技术允许IrDA模块用于以不同的传输功率设置传输RC信号。为了降低功耗，使用进行RC通信所需的最小传输功率。

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