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1. 发明授权

US11575364B2 Apparatuses and methods for shifting a digital signal by a shift time to provide a shifted signal 有权
公开(公告)号：US11575364B2
公开(公告)日：2023-02-07
申请号：US16543756
申请日：2019-08-19
申请人： Apple Inc.
发明人： Thomas Bauernfeind , Andreas Menkhoff , Michael Bruennert
IPC分类号： H03M7/00 , H03H17/02 , H03H17/00 , H03H17/06
摘要： An apparatus for shifting a digital signal having a first sample rate by a shift time to provide a shifted signal having a second sample rate is provided. The apparatus includes a sample rate converter configured to provide a value of an interpolated signal at a compensated sample time as a sample of the shifted signal, the interpolated signal being based on the digital signal. The sample rate converter is configured to modify a time interval between a sample time of the digital signal and the compensated sample time based on the shift time.

2. 发明授权

US11514302B2 Programmable impedance 有权
公开(公告)号：US11514302B2
公开(公告)日：2022-11-29
申请号：US16806264
申请日：2020-03-02
申请人： SiliconIntervention Inc.
发明人： A. Martin Mallinson
IPC分类号： H03H17/00 , G06N3/063 , G06F30/36
摘要： A programmable impedance element consists of a plurality of nominally identical two-port elements, each two-port element having an impedance element and two switches, the two-port elements arranged in a chain fashion with a structured set of switches such that a range of impedances can be obtained from each cell by dynamically changing the connections between the impedance elements in the cell. The common cell is constructed by connecting the nominally identical two-port impedance elements in a way that the number of possible combinations of the impedance elements is reduced to the subset of all possible combinations that uses the minimum possible number of connections. This structure allows the creation of matched impedances using industry standard devices. The connections between impedance elements are switches that may be “field-programmable,” i.e., that may be set on the chip after manufacture and configured during operation of the circuit, or alternatively may be mask programmable.

3. 发明授权

US11323130B2 Infinite impulse response filters with dithering and methods of operation thereof 有权
公开(公告)号：US11323130B2
公开(公告)日：2022-05-03
申请号：US16683859
申请日：2019-11-14
申请人： STMicroelectronics KK
发明人： Ryo Tsutsui
IPC分类号： G06F7/58 , H03H17/00 , H03H17/02 , H03M3/00 , H03M1/06
摘要： A method of filtering includes generating a random value by a random number generator circuit, filtering a first signal by a first filter to form a filtered first signal, dithering the filtered first signal using the random value to form a dithered first signal, filtering a second signal by a second filter to form a filtered second signal, and dithering the filtered second signal using the random value to form a dithered second signal.

4. 发明授权

US11303295B1 SDM encoder and related signal processing system 有权
公开(公告)号：US11303295B1
公开(公告)日：2022-04-12
申请号：US17452403
申请日：2021-10-26
申请人： xMEMS Labs, Inc.
发明人： Jemm Yue Liang , Hsi-Sheng Chen
IPC分类号： H03M3/00 , H03H17/04 , H03H17/06 , G10L19/032 , H03H17/00 , H03F3/20
摘要： A signal density modulation (SDM) encoder includes a first subtractor, a sigma circuit and a multi-bit quantizer. The first subtractor is used for receiving an input signal. The sigma circuit is coupled to the first subtractor. The multi-bit quantizer, coupled to the first subtractor and the sigma circuit, is configured to generate an output signal. The sigma circuit or the multi-bit quantizer produces a first feedback signal to the first subtractor. The first subtractor performs a subtraction operation according to the first feedback signal and the input signal, and generates a delta signal. The sigma circuit performs an operation on the delta signal, such that the SDM encoder has a noise transfer function having a high pass filtering effect. The noise transfer function is a ratio of a quantization error brought by the multi-bit quantizer with respect to the input signal. The output signal has more than two levels.

5. 发明授权

US11293812B2 Adaptive filter bank for modeling a thermal system 有权
公开(公告)号：US11293812B2
公开(公告)日：2022-04-05
申请号：US16519751
申请日：2019-07-23
申请人： Schneider Electric USA, Inc.
发明人： Larry A. Turner
IPC分类号： G01K7/42 , G06F30/20 , G01F1/86 , G01K1/022 , H03H17/04 , H03H17/00
摘要： Embodiments of the disclosure implement an application of an adaptive filter bank that is used to characterize the heat transfer of a volume in a thermal system, to estimate temperature and power consumption, and to improve performance characteristics in applications including optimal temperature control and diagnostics. In some embodiments, the adaptive filter bank is an iterative solution, comprised of a collection of adaptive filters defined to consume incident signals, produce an aggregate reference signal, estimate an error relative to an observed primary signal, and modify thermal coefficients to converge on a solution. For example, the incident signals are comprised of properties related to active, passive, solar irradiance, and unobserved heat transfer. A reference signal is an estimate of a primary signal, related to the rate of heat transfer or temperature change. Thereupon, the thermal coefficients are modified in an adaptive process to include gradient descent, which minimizes estimation error.

6. 发明授权

US11190167B2 Discrete time charge sharing IIR bandpass filter incorporating clock phase reuse 有权
公开(公告)号：US11190167B2
公开(公告)日：2021-11-30
申请号：US16251227
申请日：2019-01-18
申请人： University College Dublin
发明人： Amirhossein Ansari Bozorg , Robert Bogdan Staszewski
IPC分类号： H03H17/02 , H04B1/16 , H04B1/08 , H03H15/00 , H03H19/00 , H03H17/00
摘要： A novel and useful discrete time IIR bandpass filter is disclosed that takes advantage of clock phase reuse thereby leading to significant improvements in filtering, especially stop band rejection in comparison to prior art filters. The bandpass filter of the present invention achieves improved filtering performance without adding any additional clock phases to the circuit. In particular, reuse of the already existing clock phases increases the order and performance of the filter. The invention exploits reuse of the clock phases to provide higher order filtering along with a discrete time IIR filter design which is capable of operating at high frequency. Consequently, much better filtering is achieved and the quality factor of the filter is improved leading to sharper transition bands especially for close-in band blockers in modern 4G/5G receivers.

7. 发明授权

US11057065B1 Adaptive analog parallel combiner 有权
公开(公告)号：US11057065B1
公开(公告)日：2021-07-06
申请号：US16410545
申请日：2019-05-13
申请人： Albert Vareljian , Vassili Kireev
发明人： Albert Vareljian , Vassili Kireev
IPC分类号： H04L27/08 , H04B1/10 , H04B1/16 , H03G3/20 , H03G5/16 , H03G5/00 , H03H17/00 , H03H15/00
摘要： An adaptive analog parallel combiner circuit for receiver data recovery from a communication signal is provided. The circuit includes a summer that sums outputs of a plurality of filter taps in parallel, including zeroth and first through Nth filter taps, each filter tap having as input the communication signal or a version thereof, wherein N is a finite integer greater than or equal to two. The zeroth filter tap has an amplifier with gain controlled by a zeroth adaptive gain control coefficient, and each of the first through Nth filter taps having an all pass filter and gain controlled amplification, with gain controlled by a corresponding one of a first through Nth adaptive gain control coefficients and the all pass filter implementing a transfer function having a zero and a pole equaling each other and at a base frequency divided by a corresponding integer from one through N.

8. 发明申请

US20210133551A1 Programmable Impedance 有权
公开(公告)号：US20210133551A1
公开(公告)日：2021-05-06
申请号：US16806264
申请日：2020-03-02
申请人： SiliconIntervention Inc.
发明人： A. Martin Mallinson
IPC分类号： G06N3/063 , G06F30/36 , H03H17/00
摘要： A programmable impedance element consists of a plurality of nominally identical two-port elements, each two-port element having an impedance element and two switches, the two-port elements arranged in a chain fashion with a structured set of switches such that a range of impedances can be obtained from each cell by dynamically changing the connections between the impedance elements in the cell. The common cell is constructed by connecting the nominally identical two-port impedance elements in a way that the number of possible combinations of the impedance elements is reduced to the subset of all possible combinations that uses the minimum possible number of connections. This structure allows the creation of matched impedances using industry standard devices. The connections between impedance elements are switches that may be “field-programmable,” i.e., that may be set on the chip after manufacture and configured during operation of the circuit, or alternatively may be mask programmable.

9. 发明授权

US10783430B2 Signal removal to examine a spectrum of another signal 有权
公开(公告)号：US10783430B2
公开(公告)日：2020-09-22
申请号：US15276188
申请日：2016-09-26
申请人： The Boeing Company , HRL Laboratories, LLC
发明人： Peter S. Wittenberg , Peter Petre , Shankar R. Rao
IPC分类号： G06N3/06 , G06N3/063 , G01R23/167 , G06F17/16 , G06N3/04 , G06N3/08 , H03F3/19 , H04B1/00 , H04B1/12 , H03H17/02 , H03H17/00 , H03H21/00
摘要： A method for removing an extracted RF signal to examine a spectrum of at least one other RF signal includes receiving a mixture signal by an ADC. The mixture signal includes a plurality of separate signals from different signal sources. The mixture signal is digitized by the ADC. A first digitized signal and a second digitized signal are generated that are the same. The first digitized signal is delayed a predetermined time delay and the second digitized signal is processed in a neuromorphic signal processor to extract an extracted signal. The predetermined time delay corresponds to a delay embedding in the neuromorphic signal processor. A phase delay and amplitude of the extracted signal is adjusted based on a phase delay and amplitude of the first digitized signal. An adjusted extracted signal is cancelled from the first digitized signal to provide an input examination signal for examination.

10. 发明授权

US10740410B2 Method for adding a comment to interactive content by reproducing the interactive content in accordance with a brached comment scenario 有权
公开(公告)号：US10740410B2
公开(公告)日：2020-08-11
申请号：US16156684
申请日：2018-10-10
申请人： STUDIO XID KOREA, INC.
发明人： Soo Kim , Jae Won Song
IPC分类号： H03M7/24 , H03H17/00 , G06F16/93 , H04L29/06 , H04L29/08 , G06F40/169 , H04L12/58 , G06F16/9535 , G06F3/0483 , G06F3/0481 , G06F3/0482 , G06F3/0484 , G06F3/0488
摘要： Disclosed are methods and apparatus for commenting on interactive content. One of the methods includes reproducing the interactive content in accordance with a branched scenario including a plurality of branches, each of which is matched to a trigger, receiving a touch input for inputting a comment on the interactive content, selecting a comment target trigger from the triggers, matching the comment to the selected comment target trigger, determining a comment target object, which is an object located closest to a touch point at the time when the touch input is made among candidate objects related to the comment target trigger, the candidate objects comprise objects of a response being reproduced at the time when the touch input is made, among all responses of the comment target trigger; and transmitting comment information comprising information of the comment target trigger, a trigger log and content data of the comment.

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