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公开(公告)号：US11349441B2
公开(公告)日：2022-05-31
申请号：US16745370
申请日：2020-01-17
发明人： Peter Holzmann
摘要： An audio driver circuit includes a modulator circuit configured to receive an audio input signal and produce a first modulated digital pulse signal. The first modulated digital pulse signal has a magnitude that switches between a supply power voltage and a supply ground voltage. The audio driver circuit also includes a switched driver circuit coupled to the modulator circuit to receive the first modulated digital pulse signal and configured to provide a second modulated digital pulse signal for driving an MOS (metal oxide semiconductor) output transistor. The second modulated digital pulse signal has a same timing pattern as the first modulated digital pulse signal and has a magnitude that tracks linearly with the magnitude of the audio input signal.
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2.发明授权Method and apparatus for encoding digital data into an oversampling digital to analog converter 有权将数字数据编码为过采样数模转换器的方法和装置公开(公告)号：US09331710B1
公开(公告)日：2016-05-03
申请号：US14751131
申请日：2015-06-26
发明人： Peter Holzmann , Yao-Ching Liu
CPC分类号： H03M1/661 , H03M1/00 , H03M1/0631 , H03M1/067 , H03M1/0673 , H03M1/12 , H03M1/687 , H03M1/747
摘要： A method for an oversampling digital-to-analog converter (DAC) includes oversampling M-bit binary data to provide N-bit oversampled binary data, wherein M and N are integers and N is greater than M, encoding the N-bit oversampled binary data to provide 2(N-1)-bit thermometer code data and a sign bit, shuffling the 2(N-1)-bit thermometer code data to provide 2(N-1)-bit shuffled data, converting the 2(N-1)-bit shuffled data and the sign bit to an analog output signal, and smoothing the analog signal to provide a smoothed analog output signal.
摘要翻译： 用于过采样数模转换器（DAC）的方法包括过采样M位二进制数据以提供N位过采样二进制数据，其中M和N是整数，N大于M，对N位过采样二进制 数据提供2（N-1）位温度计代码数据和符号位，混合2（N-1）位温度计代码数据，提供2（N-1）位混洗数据，转换2 -1）位混洗数据和符号位到模拟输出信号，并平滑模拟信号以提供平滑的模拟输出信号。
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3.发明授权公开(公告)号：US10250996B1
公开(公告)日：2019-04-02
申请号：US15803837
申请日：2017-11-06
发明人： Peter Holzmann
摘要： An acoustic energy detection circuit can include a microphone interface circuit configured for coupling to a microphone. The microphone interface circuit is configured to intermittently activate the microphone to detect acoustic energy and convert the acoustic energy to an electrical signal. The acoustic energy detection circuit also includes a comparator circuit for receiving the electrical signal and comparing the electrical signal with a threshold signal. The comparator circuit is configured to output an output signal to indicate detection of acoustic energy.
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公开(公告)号：US20210226592A1
公开(公告)日：2021-07-22
申请号：US16745370
申请日：2020-01-17
发明人： Peter Holzmann
摘要： An audio driver circuit includes a modulator circuit configured to receive an audio input signal and produce a first modulated digital pulse signal. The first modulated digital pulse signal has a magnitude that switches between a supply power voltage and a supply ground voltage. The audio driver circuit also includes a switched driver circuit coupled to the modulator circuit to receive the first modulated digital pulse signal and configured to provide a second modulated digital pulse signal for driving an MOS (metal oxide semiconductor) output transistor. The second modulated digital pulse signal has a same timing pattern as the first modulated digital pulse signal and has a magnitude that tracks linearly with the magnitude of the audio input signal.
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公开(公告)号：US10484005B1
公开(公告)日：2019-11-19
申请号：US16380968
申请日：2019-04-10
发明人： Peter Holzmann
IPC分类号： H03M1/66 , H03M7/32 , H03G3/30 , G10L21/0232 , H04R19/04 , H04R1/02 , H04R3/12 , H04R3/00 , H04R19/01 , H03F3/68
摘要： A PDM (pulse density modulation) signal energy detection circuit includes a digital-to-analog converter circuit for receiving a PDM digital input signal and producing an analog output signal based on the PDM digital input signal. The PDM signal energy detection circuit also includes a comparator circuit for receiving the analog output signal from the digital-to-analog converter circuit and producing a pulsed signal when a magnitude of the analog output signal exceeds a pre-set threshold. The PDM signal energy detection circuit also has a counter circuit for receiving the pulsed signal from the comparator circuit and producing an energy detection signal when a number of consecutive pulsed signals exceed a pre-set count.
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公开(公告)号：US09362897B2
公开(公告)日：2016-06-07
申请号：US14517775
申请日：2014-10-17
发明人： Peter Holzmann
IPC分类号： H03K3/03
CPC分类号： H03K3/0315
摘要： An integrated oscillator circuit has a plurality oscillator stages including a first oscillator stage, an odd number of intermediate oscillator stages, and a last oscillator stage arranged in series. Each of the oscillator stages has a reverse-biased diode device and a transistor coupled in series between a power supply and a ground. Each diode device has an anode and a cathode, and each transistor has a control terminal for controlling a current flow from a first terminal to a second terminal. In each oscillator stage, the anode of the diode is coupled to the first terminal of the transistor at an internal node. The control terminal of the transistor in each oscillator stage is coupled to the internal node of a proceeding oscillator stage. Further, the control terminal of the transistor in the first oscillator stage is coupled to the internal node of the last oscillator stage.
摘要翻译： 集成振荡器电路具有包括第一振荡器级，奇数个中间振荡器级和串联布置的最后一个振荡器级的多个振荡器级。 每个振荡器级具有反向偏置二极管器件和串联耦合在电源和地之间的晶体管。 每个二极管器件具有阳极和阴极，并且每个晶体管具有用于控制从第一端子到第二端子的电流的控制端子。 在每个振荡器级中，二极管的阳极在内部节点处耦合到晶体管的第一端子。 每个振荡器级中的晶体管的控制端耦合到正在进行的振荡器级的内部节点。 此外，第一振荡器级中的晶体管的控制端耦合到最后一个振荡器级的内部节点。
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7.发明授权公开(公告)号：US09287823B1
公开(公告)日：2016-03-15
申请号：US14487090
申请日：2014-09-15
发明人： Peter Holzmann
IPC分类号： H03K3/0231 , H03B1/02 , H03L1/02 , H01L29/772
CPC分类号： H01L29/772 , H03K3/0231 , H03K4/06
摘要： A self-biased RC (resistor-capacitor) oscillator and ramp generator circuit includes a combined current and voltage reference circuit for providing a reference current, a first reference voltage, and a second reference voltage. The combined current and voltage reference circuit includes a circuit branch of an NMOS transistor in a diode connection, a PMOS transistor in a diode connection, and a resistor coupled in series. The circuit also has a signal generating circuit that includes a capacitor. The signal generating circuit is configured to charge and discharge the capacitor between the first reference voltage and the second reference voltage. The self-biased RC oscillator and ramp generator circuit is configured to provide a ramp or saw tooth signal at a node of the capacitor and to provide an oscillator output signal at an output of the signal generating circuit.
摘要翻译： 自偏置RC（电阻 - 电容器）振荡器和斜坡发生器电路包括用于提供参考电流，第一参考电压和第二参考电压的组合电流和电压参考电路。 组合的电流和电压参考电路包括二极管连接中的NMOS晶体管的电路支路，二极管连接中的PMOS晶体管和串联耦合的电阻器。 电路还具有包括电容器的信号发生电路。 信号发生电路被配置为在第一参考电压和第二参考电压之间对电容器进行充电和放电。 自偏置RC振荡器和斜坡发生器电路被配置为在电容器的节点处提供斜坡或锯齿信号，并在信号发生电路的输出处提供振荡器输出信号。
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8.发明授权公开(公告)号：US09263218B2
公开(公告)日：2016-02-16
申请号：US14286941
申请日：2014-05-23
发明人： Peter Holzmann
IPC分类号： H01H85/02 , G11C13/00 , G11C17/16 , H01H85/48 , H01L23/525 , H02J7/00 , H01L27/10 , G11C17/18 , G11C29/00 , G11C11/56 , G06F12/14
CPC分类号： H01H85/0241 , G06F12/1433 , G11C11/16 , G11C11/5685 , G11C13/0002 , G11C13/0004 , G11C13/0007 , G11C13/0011 , G11C13/0014 , G11C13/003 , G11C17/16 , G11C17/18 , G11C29/76 , G11C2213/74 , G11C2213/79 , H01H85/48 , H01H2085/0283 , H01L23/5256 , H01L27/101 , H01L2924/0002 , H02J7/0036 , H01L2924/00
摘要： An integrated circuit includes an electrically resettable fuse device. The electrically resettable fuse device has a plurality of resettable fuse modules coupled in parallel. Each resettable fuse module including a fuse element characterized by a first and a second impedance states. The plurality of resettable fuse modules are configured such that when the fuse element is in the first impedance state, and a current flowing through each fuse element in a first direction exceeds a current limit, the fuse element enters into the second impedance state. When the fuse element is in the second impedance state and, in response to a global reset signal and a local reset signal, a current is applied to the fuse element in a second direction opposite the first direction, the fuse element is reset to the first impedance state.
摘要翻译： 集成电路包括电可重置保险丝装置。 电可重置保险丝装置具有并联耦合的多个可复位保险丝模块。 每个可复位保险丝模块包括以第一和第二阻抗状态为特征的熔丝元件。 多个可复位保险丝模块被构造成使得当熔丝元件处于第一阻抗状态时，并且在第一方向上流过每个熔丝元件的电流超过限流值时，熔丝元件进入第二阻抗状态。 当熔丝元件处于第二阻抗状态时，响应全局复位信号和局部复位信号，电流以与第一方向相反的第二方向施加到熔丝元件，熔丝元件被复位到第一 阻抗状态。
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