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    Output range for interpolation architectures employing a cascaded integrator-comb (CIC) filter with a multiplier
    31.
    发明授权
    Output range for interpolation architectures employing a cascaded integrator-comb (CIC) filter with a multiplier 有权

    公开(公告)号：US09954514B2

    公开(公告)日：2018-04-24

    申请号：US14624218

    申请日：2015-02-17

    Applicant: Texas Instruments Incorporated

    Inventor： Tarkesh Pande ,  Srinivas Lingam

    IPC: H03H17/06

    CPC classification number: H03H17/0671

    Abstract: A cascaded integrator-comb filter (CIC) that includes a differentiator, a rate changer, an integrator, and a multiplier. The differentiator is configured to differentiate an input signal to produce a differentiated input signal. The rate changer is coupled to the differentiator and is configured to interpolate the differentiated input signal based on an interpolation rate to produce an upsample signal. The integrator is coupled to the rate changer and is configured to integrate the upsample signal to produce an output signal. The multiplier is coupled to the differentiator, rate changer, and integrator and is configured to increase the output signal amplitude based on the interpolation rate.

    System and method for improving narrowband interference performance
    33.
    发明授权
    System and method for improving narrowband interference performance 有权

    公开(公告)号：US09780819B2

    公开(公告)日：2017-10-03

    申请号：US15061301

    申请日：2016-03-04

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Tarkesh Pande ,  Anuj Batra ,  Il Han Kim

    IPC: H04B1/10 ,  H04L5/00

    CPC classification number: H04J11/0066 ,  H04L25/03821 ,  H04L27/2647

    Abstract: An orthogonal frequency division multiplexing (OFDM) receiver includes detection logic, offset generation logic, tone erasure logic, and correction generation logic. The detection logic is configured to detect a signal containing a block of samples that includes a narrowband interferer from a communication channel. The offset generation logic is configured to align a frequency of the narrowband interferer to a center of a subcarrier frequency of the communication channel to produce an offset signal thereby introducing inter-carrier interference (ICI). The tone erasure logic is configured to remove the subcarrier frequency from the offset signal to produce an interferer erased offset signal. The correction generation logic is configured to remove the ICI to produce an interferer erased signal.

    Navigation assistance based on visual codes
    36.
    发明授权
    Navigation assistance based on visual codes 有权
    基于视觉代码的导航辅助

    公开(公告)号：US09557172B2

    公开(公告)日：2017-01-31

    申请号：US15054252

    申请日：2016-02-26

    Applicant: Texas Instruments Incorporated

    Inventor： Deric Wayne Waters ,  Tarkesh Pande

    IPC: G01C17/38 ,  G01C5/06 ,  G06F17/30 ,  G01C17/02 ,  G01P15/00 ,  G06K7/10 ,  G06K19/06

    CPC classification number: G01C17/38 ,  G01C5/06 ,  G01C17/02 ,  G01P15/00 ,  G06F17/30879 ,  G06K7/10792 ,  G06K7/1417 ,  G06K19/06037

    Abstract: Visual codes are scanned to assist navigation. The visual code may be a Quick Response (QR) code that contains information useful to calibrating a variety of navigation-based sensors such as gyroscopes, e-compasses, and barometric pressure sensors. In an embodiment, an imaging device, an e-compass, an accelerometer, and a processor are elements of a system. The processor is coupled to the imaging device, the e-compass, and the accelerometer. The processor causes the imaging device to scan a visual code, read a yaw angle from the visual code, and computes an estimate of a yaw angle based on magnetic field measurements taken by the e-compass. The processor generates scale factors and biases determined from measurements generated by the e-compass. Based on scanning the visual code, the processor computes a quality factor based on the yaw angle read from the visual code and the estimate of the yaw angle.

    Abstract translation: 扫描视觉代码以辅助导航。 视觉代码可以是快速响应（QR）代码，其包含用于校准各种基于导航的传感器（例如陀螺仪，电子罗盘和大气压力传感器）的信息。 在一个实施例中，成像设备，电子罗盘，加速度计和处理器是系统的元件。 处理器耦合到成像设备，电子罗盘和加速度计。 处理器使成像设备扫描视觉代码，从视觉代码读取偏航角度，并且基于由电子罗盘采集的磁场测量来计算偏航角的估计。 处理器产生由电子罗盘产生的测量确定的比例因子和偏差。 基于扫描视觉代码，处理器基于从视觉代码读取的偏航角和偏航角的估计来计算质量因子。

    ENABLING CO-EXISTENCE AMONG POWER LINE COMMUNICATION (PLC) TECHNOLOGIES
    40.
    发明申请
    ENABLING CO-EXISTENCE AMONG POWER LINE COMMUNICATION (PLC) TECHNOLOGIES 审中-公开
    实现电力线通信（PLC）技术的共存

    公开(公告)号：US20160233923A1

    公开(公告)日：2016-08-11

    申请号：US15045909

    申请日：2016-02-17

    Applicant: Texas Instruments Incorporated

    Inventor： Ramanuja Vedantham ,  Anand Dabak ,  Tarkesh Pande

    IPC: H04B3/54 ,  H04L5/14

    CPC classification number: H04B3/54 ,  H04B3/546 ,  H04B2203/5408 ,  H04B2203/5433 ,  H04B2203/5445 ,  H04L5/14

    Abstract: Systems and methods for enabling co-existence among power line communications (PLC) technologies are described. In some embodiments, a method performed by a PLC device, such as a PLC gateway, may include searching for and detecting a co-existence preamble on a PLC network while not transmitting or receiving frames. The device waits a time period before attempting transmission of a frame if the coexistence preamble is detected and is not followed by a native preamble. Transmissions are resumed to the PLC network after expiration of the time period.

    Abstract translation: 描述了实现电力线通信（PLC）技术共存的系统和方法。 在一些实施例中，由诸如PLC网关的PLC设备执行的方法可以包括在不发送或接收帧的情况下在PLC网络上搜索和检测共存前导码。 如果检测到共存前导码，则设备在尝试发送帧之前等待一段时间，并且不跟随本机前同步码。 传输在该时间段到期后恢复到PLC网络。

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