中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

34 records (took 0.024 seconds)

    Removing impulsive noise in a radio
    11.
    发明授权
    Removing impulsive noise in a radio 有权

    公开(公告)号：US09780816B1

    公开(公告)日：2017-10-03

    申请号：US15086236

    申请日：2016-03-31

    Applicant: Silicon Laboratories Inc.

    Inventor： Javier Elenes ,  Dana Taipale ,  Alex Hakkola

    IPC: H04B1/10 ,  H04L27/14

    CPC classification number: H04B1/10 ,  H04B1/1661 ,  H04L27/14

    Abstract: In one example, an apparatus includes: a delay unit to delay a demodulated signal obtained from an input radio frequency (RF) frequency modulation (FM) signal; a filter to filter the demodulated signal and output a filtered demodulated signal; an impulse detection circuit to receive the filtered demodulated signal and detect presence of an impulse in the demodulated signal; and an impulse removal circuit to remove the detected impulse from the demodulated signal.

    Antenna Diversity Combining For Differentially Modulated Orthogonal Frequency Division Multiplexed (OFDM) Signals
    13.
    发明申请
    Antenna Diversity Combining For Differentially Modulated Orthogonal Frequency Division Multiplexed (OFDM) Signals 有权
    天线分集组合用于差分调制的正交频分复用（OFDM）信号

    公开(公告)号：US20150063497A1

    公开(公告)日：2015-03-05

    申请号：US14015238

    申请日：2013-08-30

    Applicant: Silicon Laboratories Inc.

    Inventor： Javier Elenes ,  Dana Taipale

    IPC: H04L27/26

    CPC classification number: H04L27/2649 ,  H04B1/126 ,  H04B7/0845 ,  H04B7/0848 ,  H04B7/0891 ,  H04L27/2647 ,  H04L27/265

    Abstract: In an embodiment, an apparatus includes a first tuner to receive a radio frequency (RF) signal from a first antenna and to process the RF signal to generate a first time-domain quadrature signal, a second tuner to receive the RF signal from a second antenna and to process the RF signal to generate a second time-domain quadrature signal, and a combiner circuit to receive the first and second time-domain quadrature signals.

    Abstract translation: 在一个实施例中，一种装置包括：第一调谐器，用于接收来自第一天线的射频（RF）信号，并处理RF信号以产生第一时域正交信号;第二调谐器，用于从第二天线接收RF信号 天线并处理RF信号以产生第二时域正交信号，以及组合器电路以接收第一和第二时域正交信号。

    Neural Network Inference and Training Using A Universal Coordinate Rotation Digital Computer
    15.
    发明申请
    Neural Network Inference and Training Using A Universal Coordinate Rotation Digital Computer 有权

    公开(公告)号：US20210350221A1

    公开(公告)日：2021-11-11

    申请号：US16866994

    申请日：2020-05-05

    Applicant: Silicon Laboratories Inc.

    Inventor： Javier Elenes

    IPC: G06N3/08 ,  G06F7/544 ,  G06N3/04

    Abstract: A system and method of implementing a neural network with a non-linear activation function is disclosed. A Universal Coordinate Rotation Digital Computer (CORDIC) is used to implement the activation function. Advantageously, the CORDIC is also used during training for back propagation. Using a CORDIC, activation functions such as hyperbolic tangent and sigmoid may be implemented without the use of a multiplier. Further, the derivatives of these functions, which are needed for back propagation, can also be implemented using the CORDIC.

    Side-Channel Attack Mitigation For Secure Devices With Embedded Sensors
    16.
    发明申请
    Side-Channel Attack Mitigation For Secure Devices With Embedded Sensors 有权

    公开(公告)号：US20210150068A1

    公开(公告)日：2021-05-20

    申请号：US16687959

    申请日：2019-11-19

    Applicant: Silicon Laboratories Inc.

    Inventor： Javier Elenes

    IPC: G06F21/75 ,  H01L23/00 ,  H04L9/00

    Abstract: Embodiments include cryptographic circuits having isolated operation with respect to embedded sensor operations to mitigate side-channel attacks. A cryptographic circuit, a sensor, and an analog-to-digital converter (ADC) circuit are integrated into an integrated circuit along with a cryptographic circuit. A sensed signal is output with the sensor, and the sensed signal is converted to digital data using the ADC circuit. Further, cryptographic data is generated using one or more secret keys and the cryptographic circuit. The generation of the cryptographic data has isolated operation with respect to the operation of the sensor and the ADC circuit. The isolated operation mitigates side-channel attacks. The isolated operation can be achieved using power supply, clock, and/or reset circuits for the cryptographic circuit that are electrically isolated from similar circuits for the sensor and ADC circuit. The isolated operation can also be achieved using time-division multiplex operations. Other variations can also be implemented.

    Integrated circuit with tamper protection and method therefor
    17.
    发明授权
    Integrated circuit with tamper protection and method therefor 有权

    公开(公告)号：US10289840B2

    公开(公告)日：2019-05-14

    申请号：US15612841

    申请日：2017-06-02

    Applicant: Silicon Laboratories Inc.

    Inventor： Javier Elenes ,  Sebastian Ahmed ,  Lars Lydersen

    IPC: G06F21/55 ,  G06F21/72

    Abstract: An integrated circuit includes a tamper sensor that has plurality of state circuits. Each of the plurality of state circuits has a respective output that provides a respective logic state. When operating properly, the respective logic state is toggled in response to a clock signal. The respective logic state fails to toggle in response to a respective fault injection. The tamper sensor has an output that provides a fault signal in response to a difference in the respective logic state of the plurality of state circuits. Additionally, the integrated circuit includes a protected circuit, as well as a tamper response circuit. The tamper response circuit is connected to the tamper sensor and to the protected circuit. The tamper response circuit executes a protection operation to secure the protected circuit in response to the fault signal.

    Removing Impulsive Noise In A Radio
    18.
    发明申请
    Removing Impulsive Noise In A Radio 有权

    公开(公告)号：US20170288712A1

    公开(公告)日：2017-10-05

    申请号：US15086236

    申请日：2016-03-31

    Applicant: Silicon Laboratories Inc.

    Inventor： Javier Elenes ,  Dana Taipale ,  Alex Hakkola

    IPC: H04B1/10 ,  H04L27/14

    CPC classification number: H04B1/10 ,  H04B1/1661 ,  H04L27/14

    Abstract: In one example, an apparatus includes: a delay unit to delay a demodulated signal obtained from an input radio frequency (RF) frequency modulation (FM) signal; a filter to filter the demodulated signal and output a filtered demodulated signal; an impulse detection circuit to receive the filtered demodulated signal and detect presence of an impulse in the demodulated signal; and an impulse removal circuit to remove the detected impulse from the demodulated signal.

    Detecting digital radio signals
    20.
    发明授权
    Detecting digital radio signals 有权
    检测数字无线电信号

    公开(公告)号：US09124334B2

    公开(公告)日：2015-09-01

    申请号：US14283648

    申请日：2014-05-21

    Applicant: Silicon Laboratories Inc.

    Inventor： Javier Elenes ,  Brian D. Green ,  Michael R. May

    IPC: H04L27/06 ,  H04B1/08 ,  H04H20/30 ,  H04H60/12 ,  H04L27/00 ,  H04W52/02 ,  H04L25/03

    CPC classification number: H04B1/086 ,  H04H20/30 ,  H04H60/12 ,  H04H2201/18 ,  H04L25/03834 ,  H04L27/0008 ,  H04W52/0229 ,  Y02D70/00

    Abstract: In one embodiment, a receiver front end circuit can receive and process multiple radio frequency (RF) signals and output downconverted signals corresponding to these signals. In turn, multiple signal processors can be coupled to this front end. Specifically, a first signal processor can receive and process the downconverted signals to output a first signal obtained from content of a first RF signal, and a second signal processor can receive and process the downconverted signals to output a second signal obtained from content of a second RF signal. In addition, the apparatus may include a detection circuit coupled to the receiver front end circuit to detect presence of at least the second signal and enable the second signal processor responsive to the detected presence.

    Abstract translation: 在一个实施例中，接收器前端电路可以接收和处理多个射频（RF）信号并输出​​与这些信号对应的下变频信号。 反过来，多个信号处理器可以耦合到该前端。 具体地，第一信号处理器可以接收并处理下变频信号以输出从第一RF信号的内容获得的第一信号，并且第二信号处理器可以接收并处理下变频信号以输出从第二RF信号的内容获得的第二信号 射频信号。 此外，该装置可以包括耦合到接收器前端电路的检测电路，以检测至少第二信号的存在，并使第二信号处理器能够响应于检测到的存在。

Patent Agency Ranking