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    RADIO FREQUENCY AUTOMATIC GAIN CONTROL WITH DETECTOR FOR LINEAR MODULATION INTERFERER SIGNAL
    2.
    发明申请
    RADIO FREQUENCY AUTOMATIC GAIN CONTROL WITH DETECTOR FOR LINEAR MODULATION INTERFERER SIGNAL 有权

    公开(公告)号：US20230132055A1

    公开(公告)日：2023-04-27

    申请号：US17452372

    申请日：2021-10-26

    申请人： MOTOROLA SOLUTIONS, INC.

    发明人： Moh Lim Sim ,  Boon Heng Fong ,  Ariel L. Galan ,  Ondy Dharma Indra

    IPC分类号： H04B17/327 ,  H04B17/345 ,  H04B17/13

    摘要： One example communication device receives a radio frequency (RF) signal. The communication device may include a radio frequency integrated circuit (RFIC) that includes an internal attenuator. The RFIC and other processing circuitry may convert the received RF signal to a baseband frequency to generate a processed complex baseband signal. A digital signal processor of the communication device may determine, based on detection of or lack of detection of distortion terms in a frequency spectrum of the processed complex baseband signal at frequencies corresponding to integer multiples of a symbol rate of a linear modulation interferer, a modulation type of an interferer signal that forms at least part of the processed complex baseband signal. The digital signal processor may also control whether the internal attenuator is enabled based on a received signal strength indication (RSSI) of a desired RF signal and the modulation type of the interferer signal.

    Second order interference rejection in a radio receiver
    3.
    发明授权
    Second order interference rejection in a radio receiver 有权

    公开(公告)号：US10361734B1

    公开(公告)日：2019-07-23

    申请号：US15978512

    申请日：2018-05-14

    申请人： MOTOROLA SOLUTIONS, INC.

    发明人： Jiun How Ng ,  Dongho Han ,  Moh Lim Sim

    IPC分类号： H04B1/16 ,  H04B1/10 ,  H04B1/26

    摘要： A device and method for reducing intermodulation within a radio receiver. The device includes an intermodulation filter. The intermodulation filter is configured to receive a signal, apply a first filter and a second filter to the signal to generate a first and a second filtered signal. The intermodulation filter is configured to isolate a first intermodulation component located on a first side of a frequency spectrum of the signal within the second filtered signal, determine an estimated second intermodulation component based on a potential frequency band location, determine a correction factor based on an amplitude and phase relationship between the first and second intermodulation components, apply the correction factor to the estimated second intermodulation component, determine if the second intermodulation component exceeds a predetermined power threshold, and apply the adjusted estimated second intermodulation component to the first filtered signal, suppressing the second intermodulation component.

    Methods and systems for increasing facial recognition working rang through adaptive super-resolution
    5.
    发明授权
    Methods and systems for increasing facial recognition working rang through adaptive super-resolution 有权
    通过自适应超分辨率增加面部识别工作的方法和系统

    公开(公告)号：US09384386B2

    公开(公告)日：2016-07-05

    申请号：US14472981

    申请日：2014-08-29

    申请人： MOTOROLA SOLUTIONS, INC

    发明人： Kuan Heng Lee ,  Kevin J O'Connell ,  Moh Lim Sim ,  Yan Zhang

    IPC分类号： G06K9/00

    CPC分类号： G06K9/00295 ,  G06K9/00261 ,  G06K9/036

    摘要： Disclosed herein are methods and systems for increasing facial-recognition working range through adaptive super-resolution. One embodiment takes the form of a process that includes calculating one or more video metrics with respect to an input set of video frames. The process also includes obtaining a metric-specific weighting factor for each of the calculated video metrics. The process also includes calculating a weighted sum based on the obtained metric-specific weighting factors and the corresponding calculated video metrics. The process also includes selecting, based at least in part on the calculated weighted sum, a super-resolution technique from among a plurality of super-resolution techniques. The process also includes outputting an indication of the selected super-resolution technique.

    摘要翻译： 本文公开了通过自适应超分辨率增加面部识别工作范围的方法和系统。 一个实施例采用包括计算关于视频帧的输入集合的一个或多个视频度量的过程的形式。 该过程还包括获得针对每个计算的视频度量的度量特定加权因子。 该过程还包括基于获得的度量特定加权因子和相应计算的视频度量来计算加权和。 该过程还包括至少部分地基于所计算的加权和来从多个超分辨率技术中选择超分辨率技术。 该过程还包括输出所选择的超分辨率技术的指示。

    Very low intermediate frequency (VLIF) receiver and method of controlling a VLIF receiver
    6.
    发明授权
    Very low intermediate frequency (VLIF) receiver and method of controlling a VLIF receiver 有权
    极低中频（VLIF）接收机和控制VLIF接收机的方法

    公开(公告)号：US09042500B1

    公开(公告)日：2015-05-26

    申请号：US14109528

    申请日：2013-12-17

    申请人： MOTOROLA SOLUTIONS, INC

    发明人： Yew Leong Wong ,  Chow Loong Cheah ,  Li Choo Chen ,  Yadunandana N Rao ,  Moh Lim Sim ,  Ondy Dharma Indra Sukma

    IPC分类号： H03D1/04 ,  H04B1/12

    CPC分类号： H04B1/30 ,  H04B1/1036 ,  H04B2001/1045

    摘要： A very-low intermediate frequency (VLIF) receiver and a method of controlling a VLIF receiver. The method comprises receiving a first signal, the first signal including one or both of an on-channel signal portion and an adjacent channel interferer (ACI) portion; determining that the first signal includes a portion having a strength that is above a threshold; in response to determining that the first signal includes a portion having a strength that is above the threshold, estimating one or more IQ imbalance parameters for at least a portion of the first signal; and compensating for an IQ imbalance in at least the portion of the first signal using the one or more IQ imbalance parameters.

    摘要翻译： 一种非常低的中频（VLIF）接收机和一种控制VLIF接收机的方法。 所述方法包括：接收第一信号，所述第一信号包括通道内信号部分和相邻信道干扰源（ACI）部分中的一个或两者; 确定所述第一信号包括具有高于阈值的强度的部分; 响应于确定所述第一信号包括具有高于所述阈值的强度的部分，估计所述第一信号的至少一部分的一个或多个IQ不平衡参数; 以及使用所述一个或多个IQ不平衡参数来补偿所述第一信号的至少所述部分中的IQ不平衡。

    LOCAL OSCILLATOR SWITCHING CONTROL FOR A VERY LOW INTERMEDIATE FREQUENCY RECEIVER
    7.
    发明申请
    LOCAL OSCILLATOR SWITCHING CONTROL FOR A VERY LOW INTERMEDIATE FREQUENCY RECEIVER 有权

    公开(公告)号：US20230140647A1

    公开(公告)日：2023-05-04

    申请号：US17453144

    申请日：2021-11-01

    申请人： MOTOROLA SOLUTIONS, INC.

    发明人： Moh Lim Sim ,  Chow Loong Cheah ,  Jesus F. Corretjer ,  Kevin Doberstein ,  Boon Heng Fong ,  Ariel L. Galan

    IPC分类号： H04B1/10 ,  H03D3/00 ,  H04B1/403

    摘要： A very low intermediate frequency receiver and methods for controlling the same. One method includes providing, using a local oscillator, a first intermediate frequency, detecting, using an interferer detector, an adjacent or alternate channel interference signal and an image of the adjacent or adjacent channel interference signal causing interference with a desired signal, and determining, using an electronic processor, whether the desired signal is an analog signal. In response to determining that the desired signal is an analog signal, the method includes controlling, using the electronic processor, the local oscillator to provide a second intermediate frequency. In response to determining that the desired signal is not an analog signal, the method includes determining, using the electronic processor, a switching condition based on the desired signal, and controlling, using the electronic processor, the local oscillator to provide the second intermediate frequency in response to determining the switching condition.

    VERY LOW INTERMEDIATE FREQUENCY (VLIF) RECEIVER AND A METHOD OF CONTROLLING A VLIF RECEIVER
    9.
    发明申请
    VERY LOW INTERMEDIATE FREQUENCY (VLIF) RECEIVER AND A METHOD OF CONTROLLING A VLIF RECEIVER 有权
    非常低的中频（VLIF）接收机和控制VLIF接收机的方法

    公开(公告)号：US20150295604A1

    公开(公告)日：2015-10-15

    申请号：US14440297

    申请日：2012-11-07

    申请人： MOTOROLA SOLUTIONS, INC.

    发明人： Chow Loong Cheah ,  Kim Loy Lai ,  Kar Boon Oung ,  Moh Lim Sim ,  V. C. Prakash V K Chacko

    IPC分类号： H04B1/10

    CPC分类号： H04B1/1027 ,  H03D3/002 ,  H03D7/18 ,  H03D2200/0088 ,  H04B1/109

    摘要： A very low intermediate frequency (VLIF) receiver and a method of controlling a VLIF receiver. The method comprises estimating energy levels in first and second signals and detecting interference from a first adjacent channel interferer based upon a difference in energy in the first and second signals. The first signal comprising a first on-channel portion and an adjacent channel portion and the second signal comprises an intermediate frequency translation of the first on-channel portion. The energy levels are estimated for corresponding time instances and the adjacent channel interferer is of the adjacent channel portion. The VLIF receiver is then controlled based upon the detected interference.

    摘要翻译： 一种非常低的中频（VLIF）接收机和一种控制VLIF接收机的方法。 该方法包括基于第一和第二信号中的能量差来估计第一和第二信号中的能量水平并检测来自第一相邻信道干扰源的干扰。 第一信号包括第一通道部分和相邻通道部分，第二信号包括第一通道部分的中频转换。 对于相应的时间实例估计能级，并且相邻信道干扰源是相邻信道部分。 然后根据检测到的干扰来控制VLIF接收机。