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71. 发明授权

US09667244B1 Method of and apparatus for biasing switches 有权
公开(公告)号：US09667244B1
公开(公告)日：2017-05-30
申请号：US14942637
申请日：2015-11-16
申请人： Analog Devices Global
发明人： Bilal Tarik Cavus , Turusan Kolcuoglu , Yusuf Alperen Atesal
IPC分类号： H03B1/00 , H03K3/00 , H03K17/687
CPC分类号： H03K17/687 , H03K17/145 , H03K17/693
摘要： A control circuit is provided for controlling the voltage at the gate terminal of a field effect transistor acting as a switch. The voltage, at for example, the source terminal of the transistor can be provided to a low pass filter and is then voltage translated to provide the gate signal. The filtering can be arranged so as to compensate for the effect of parasitic capacitances within the transistor, thereby linearizing its frequency response. The voltage translation can help to limit voltage differences between the gate and channel of the transistor. This can be significant as relatively fast transistors, as might be used in microwave circuits, may fail with relatively modest voltages at their gates.

72. 发明授权

US09660848B2 Methods and structures to generate on/off keyed carrier signals for signal isolators 有权
公开(公告)号：US09660848B2
公开(公告)日：2017-05-23
申请号：US14486937
申请日：2014-09-15
申请人： Analog Devices Global
发明人： Ruida Yun , Yuanjie Sun , Baoxing Chen
IPC分类号： H04L27/04 , H03B5/12 , H03C1/60
CPC分类号： H04L27/04 , H03B5/1215 , H03B5/1228 , H03C1/60 , H04L25/0286
摘要： An oscillator for a signal isolator system includes a capacitor and an inductor connected in parallel, two pairs of cross-coupled switches and a control switch. The capacitor, the inductor and the cross-coupled switches form an oscillator. The control switch controls operation of the oscillator between an ON state and an OFF state in response to a data signal to be communicated across an isolation barrier. The inductor may be formed from a winding of an isolation transformer, which reduces component count as compared to a system that provides a separate inductor. Other embodiments may include a current-supplying kickstart circuit and a shorting transistor that can speed transition between the ON and OFF states.

73. 发明授权

US09660628B2 Resistor controlled timer circuit with gain ranging 有权
公开(公告)号：US09660628B2
公开(公告)日：2017-05-23
申请号：US14563559
申请日：2014-12-08
申请人： Analog Devices Global
发明人： Sherwin Paul Roldan Almazan , George Redfield Spalding, Jr.
IPC分类号： H03K3/00 , H03K5/1534 , H03K17/687 , H03K3/0231 , H03K5/153
CPC分类号： H03K5/1534 , H03K3/0231 , H03K5/153 , H03K17/6871
摘要： A timer circuit is provided comprising: a resistor; a programmable gain circuit coupled to amplify the reference level based upon a resistor and a selected gain; a detection circuit coupled to identify the amplified reference level based upon a resistor; a selection circuit configured to select the gain based at least in part upon the identified amplified reference level based upon a resistor; a comparator circuit configured to transition between providing a signal having a first value and providing a signal having a second value based at least in part upon comparisons of a reactive circuit element excitation level with the amplified reference level based upon a resistor and with a second reference level; and reactive circuit element excitation circuit configured to reverse excitation of the reactive circuit element in response to the comparator circuit transitioning between providing the signal having the first value and providing the signal having the second value.

74. 发明授权

US09612288B2 Voltage-based fuel gauge on battery capacity 有权
公开(公告)号：US09612288B2
公开(公告)日：2017-04-04
申请号：US14169667
申请日：2014-01-31
申请人： Analog Devices Global
发明人： Hua-Jung Yang , Janne Klemetti
IPC分类号： H02J7/00 , H02J7/14 , G01R31/36
CPC分类号： G01R31/3651 , G01R31/3624 , G01R31/3675 , H02J7/0016 , H02J7/0021 , H02J7/0031 , H02J7/0036 , H02J7/0073
摘要： A device to determine a state of a battery is disclosed. One or more transistors provide a resistance between first and second nodes. The one or more transistors are configured to conduct a supply current from a battery between the first node and the second node. A measurement circuit measures the voltage generated between the first node and the second node. The measurement circuit further measures the supply voltage. A calculation circuit generates an estimate of the supply current based on the voltage measured between the first node and the second node and the resistance of the one or more transistors. The calculation circuit generates an estimate of the state of charge of the battery based on the measured supply voltage and the estimate of the supply current.

75. 发明授权

US09600015B2 Circuit and method for compensating for early effects 有权
公开(公告)号：US09600015B2
公开(公告)日：2017-03-21
申请号：US14531541
申请日：2014-11-03
申请人： Analog Devices Global
发明人： Stefan Marinca
IPC分类号： G05F3/30
CPC分类号： G05F3/30
摘要： Early effects are intrinsically present in bipolar junction transistors (BJTs). Described are examples of complimentary to absolute temperature (CTAT) and proportional to absolute temperature (PTAT) cells that reduce errors associated with the Early effects that would otherwise be present.

76. 发明申请

US20170067962A1 REMOTE EVALUATION TOOL 有权
标题翻译：远程评估工具
公开(公告)号：US20170067962A1
公开(公告)日：2017-03-09
申请号：US14935644
申请日：2015-11-09
申请人： ANALOG DEVICES GLOBAL
发明人： Richard E. Schreier , Alexander Newcombe , Ross Willett , Andre Straker
IPC分类号： G01R31/317 , H04L29/08 , G01R31/3177
CPC分类号： G01R31/31718 , G01R31/31707 , G01R31/31724 , G01R31/3177 , G01R31/318314 , G06F11/2294 , H04L67/02 , H04L67/10 , H04L67/125
摘要： Remote evaluation, e.g., web-based evaluation, lowers the evaluation barrier by allowing an engineer to gain experience with an integrated circuit (IC) using a client (e.g. a web browser) on a remote computer (e.g., a machine remote from the IC being evaluated but local to the engineer) to activate a test set-up that is maintained at a location that is far away from the engineer.
摘要翻译：远程评估，例如基于网络的评估，通过允许工程师使用远程计算机上的客户端（例如，Web浏览器）获得集成电路（IC）的经验来降低评估壁垒（例如，远离IC的机器被评估，但工程师本地）激活在远离工程师的位置保持的测试设置。

77. 发明授权

US09577509B2 Emulated peak current limit scheme for switching regulator 有权
标题翻译：开关稳压器的模拟峰值电流限制方案
公开(公告)号：US09577509B2
公开(公告)日：2017-02-21
申请号：US14260690
申请日：2014-04-24
申请人： Analog Devices Global
发明人： Basa Wang , Zhijie Zhu
IPC分类号： H02M1/32 , H02M3/156 , H02M1/00
CPC分类号： H02M1/32 , H02M3/156 , H02M2001/0009
摘要： An apparatus comprises a switching circuit, an error amplifier circuit, a current threshold circuit, and an over-current detection circuit. The switching circuit provides a switching duty cycle that includes a charge portion and a discharge portion. The error amplifier circuit generates an error signal representative of a difference between a target voltage value and a voltage at an output of the voltage regulator circuit. The switching circuit adjusts the switching duty cycle to regulate the voltage at the output using the error signal and a reference waveform signal. The current threshold circuit generates an adaptive peak current limit threshold. The over-current detection circuit generates an over-current signal when the reference waveform signal satisfies the adaptive peak current limit threshold during the charging portion of the switching cycle. The switching circuit interrupts one or more switching cycles when the reference waveform signal satisfies the adaptive peak current limit threshold.
摘要翻译：一种装置包括开关电路，误差放大器电路，电流阈值电路和过电流检测电路。开关电路提供包括充电部分和放电部分的开关占空比。误差放大器电路产生表示目标电压值与电压调节器电路输出端的电压之差的误差信号。开关电路调整开关占空比，以使用误差信号和参考波形信号来调节输出端的电压。电流阈值电路产生自适应峰值电流限制阈值。当在开关周期的充电部分中参考波形信号满足自适应峰值电流限制阈值时，过电流检测电路产生过电流信号。当参考波形信号满足自适应峰值电流限制阈值时，开关电路中断一个或多个开关周期。

78. 发明授权

US09563938B2 System and method for removing image noise 有权
标题翻译：去除图像噪声的系统和方法
公开(公告)号：US09563938B2
公开(公告)日：2017-02-07
申请号：US14269979
申请日：2014-05-05
申请人： ANALOG DEVICES TECHNOLOGY
发明人： Raka Singh , Rajesh Mahapatra , Gaurav Malik
IPC分类号： G06T5/00 , H04N1/58 , H04N1/409 , H04N9/64 , G06K9/40 , G06T5/30
CPC分类号： G06T5/002 , G06K9/40 , G06T5/30 , G06T2207/20032 , G06T2207/20192 , H04N1/409 , H04N1/58 , H04N9/646
摘要： A system and method for removing noise from images are disclosed herein. An exemplary system includes an edge-detection-based adaptive filter that identifies edge pixels and non-edge pixels in an image and selects a filtering technique for at least one non-edge pixel based on a comparison of the at least one non-edge pixel to a neighboring pixel region, wherein such comparison indicates whether the at least one non-edge pixel is a result of low-light noise.
摘要翻译：本文公开了一种用于从图像中去除噪声的系统和方法。一个示例性系统包括基于边缘检测的自适应滤波器，其识别图像中的边缘像素和非边缘像素，并且基于至少一个非边缘像素的比较为至少一个非边缘像素选择滤波技术到相邻像素区域，其中这种比较指示至少一个非边缘像素是否是低光噪声的结果。

79. 发明申请

US20170025996A1 COMPUTATIONALLY EFFICIENT ARC DETECTOR WITH COHERENT SAMPLING 审中-公开
标题翻译：具有相关抽样功能的高效电弧探测器
公开(公告)号：US20170025996A1
公开(公告)日：2017-01-26
申请号：US14807538
申请日：2015-07-23
申请人： ANALOG DEVICES GLOBAL
发明人： GORDON CHEUNG , JOHN A. HAYDEN , HANS BRUEGGEMANN , AHMED ALI MOHAMED
IPC分类号： H02S50/10 , G01R31/40 , G01R31/02
CPC分类号： H02S50/10 , G01R19/2509 , G01R31/025 , G01R31/40 , H02H1/0015 , H02H1/0092
摘要： Switching interference is a primary artifact which affects the accuracy of arc detectors. To address switching interference, conventional arc detectors employ computationally intensive techniques which are often designed specifically for a target application. Thus, conventional arc detectors require a significant amount of hardware to accurately detect arc faults, which can increase costs of the power systems and prohibit wide deployment of arc detectors. With improved signal processing, a unique method for arc detection can accurately detect arc faults efficiently while tolerate switching interference from an inverter of the power system. Specifically, the method provides accurate but efficient arc detection by using a small Fast Fourier Transform with coherent sampling that is accomplished with a common clock generator in combination with signal conditioning. The overall system implementing the method is also programmable to suit a variety of target applications.
摘要翻译：开关干扰是影响电弧检测器精度的主要工件。为了解决切换干扰，常规电弧检测器采用通常专为目标应用设计的计算密集型技术。因此，常规的电弧检测器需要大量的硬件来精确地检测电弧故障，这可以增加电力系统的成本并且禁止电弧检测器的广泛部署。通过改进的信号处理，电弧检测的独特方法可以有效地准确检测电弧故障，同时容忍来自电力系统的逆变器的开关干扰。具体地，该方法通过使用具有相干采样的小型快速傅立叶变换来提供精确而有效的电弧检测，其通过公共时钟发生器与信号调节相结合来完成。实施该方法的整个系统也是可编程的，以适应各种目标应用。

80. 发明授权

US09553717B2 Systems and methods for clock and data recovery 有权
标题翻译：时钟和数据恢复的系统和方法
公开(公告)号：US09553717B2
公开(公告)日：2017-01-24
申请号：US14218697
申请日：2014-03-18
申请人： ANALOG DEVICES GLOBAL
发明人： Muhammad Kalimuddin Khan , Philip Quinlan , Kenneth J. Mulvaney
IPC分类号： H04L7/033 , H04L7/10 , H03L7/07 , H03L7/08 , H04L7/00
CPC分类号： H04L7/0331 , H03L7/07 , H03L7/0807 , H04L7/0016 , H04L7/046 , H04L7/10
摘要： Apparatus and method for clock and data recovery are disclosed. A reset circuit counts clock cycles between edges of an input signal and resets a signal processing circuit that performs acquisition and tracking of a data stream when the clock cycle count is outside of a range. The signal processing circuit is further configured to perform acquisition and tracking according to a corrected data rate, which can be generated by data rate adjustment through a phase error correcting control loop and/or dithering between two data rates.
摘要翻译：公开了用于时钟和数据恢复的装置和方法。复位电路对输入信号的边沿之间的时钟周期进行计数，并且当时钟周期计数超出范围时，复位执行数据流的采集和跟踪的信号处理电路。信号处理电路还被配置为根据校正的数据速率执行采集和跟踪，该数据速率可以通过相位误差校正控制环路的数据速率调整和/或两个数据速率之间的抖动来产生。

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