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    NAVIGATION ASSISTANCE BASED ON VISUAL CODES
    152.
    发明申请
    NAVIGATION ASSISTANCE BASED ON VISUAL CODES 审中-公开
    基于视频代码的导航辅助

    公开(公告)号：US20160195392A1

    公开(公告)日：2016-07-07

    申请号：US15054252

    申请日：2016-02-26

    Applicant: Texas Instruments Incorporated

    Inventor： Deric Wayne Waters ,  Tarkesh Pande

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

    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。

    CALIBRATING A GYROSCOPE BASED ON VISUAL CODES
    153.
    发明申请
    CALIBRATING A GYROSCOPE BASED ON VISUAL CODES 审中-公开
    基于可视代码校准GyROSCOPE

    公开(公告)号：US20160179974A1

    公开(公告)日：2016-06-23

    申请号：US15054281

    申请日：2016-02-26

    Applicant: Texas Instruments Incorporated

    Inventor： Deric Wayne Waters ,  Tarkesh Pande

    IPC: G06F17/30 ,  G01C17/38

    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 gyroscope, and a processor are elements of a system. The processor is coupled to the imaging device and the gyroscope. The processor causes the imaging device to scan a visual code. Based on scanning the visual code, the processor causes the gyroscope to be calibrated.

    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，成像装置，陀螺仪和处理器是系统的元件。 处理器耦合到成像装置和陀螺仪。 处理器使成像设备扫描可视代码。 基于扫描视觉代码，处理器使陀螺仪被校准。

    Adaptive modulation system and method to minimize energy consumption
    155.
    发明授权
    Adaptive modulation system and method to minimize energy consumption 有权
    自适应调制系统和最小化能量消耗的方法

    公开(公告)号：US09276636B2

    公开(公告)日：2016-03-01

    申请号：US14586867

    申请日：2014-12-30

    Applicant: Texas Instruments Incorporated

    Inventor： Srinivas Lingam ,  Tarkesh Pande

    IPC: H04B15/00 ,  H04B3/54

    CPC classification number: H04B3/544 ,  H04B3/542

    Abstract: A communication device includes a modulating component, a transmitting component and a controlling component. The modulating component generates a first modulated packet and a second modulated packet. The first modulated packet is based on a first modulation scheme and the second modulated packet is based on a second modulation scheme. The first modulation scheme has a first amount of energy associated therewith, and the second modulation scheme has a second amount of energy associated therewith. The first amount of energy is less than the second amount of energy. The transmitting component generates a transmit packet based on one of the first modulated packet and the second modulated packet. The controlling component generates a control signal to instruct the modulating component to generate the first modulated packet when the transmit packet will be less than a predetermined threshold. The threshold is based on the first amount of energy.

    Abstract translation: 通信装置包括调制部件，发送部件和控制部件。 调制组件产生第一调制分组和第二调制分组。 第一调制分组基于第一调制方案，第二调制分组基于第二调制方案。 第一调制方案具有与之相关联的第一量的能量，并且第二调制方案具有与其相关联的第二量的能量。 第一能量量小于第二能量。 发送组件基于第一调制分组和第二调制分组中的一个生成发送分组。 当发送分组将小于预定阈值时，控制分量产生控制信号以指示调制分量产生第一调制分组。 阈值基于第一能量量。

    Sub-Band Power Scaling Reporting and Sub-Band Transmit Power Estimation
    156.
    发明申请
    Sub-Band Power Scaling Reporting and Sub-Band Transmit Power Estimation 审中-公开
    子带功率缩放报告和子带发射功率估计

    公开(公告)号：US20160043773A1

    公开(公告)日：2016-02-11

    申请号：US14886961

    申请日：2015-10-19

    Applicant: Texas Instruments Incorporated

    Inventor： Tarkesh Pande ,  Anand Dabak ,  Kumaran Vijayasankar ,  Ramanuja Venantham ,  Il Han Kim

    IPC: H04B3/54 ,  H04L27/04

    CPC classification number: H04B3/54 ,  H04B2203/5416 ,  H04L5/0094 ,  H04L27/04 ,  H04L27/18 ,  H04L27/2602 ,  H04L27/32

    Abstract: Systems and methods for routing protocols for power line communications (PLC) are described. In some embodiments, a method performed by a PLC device, such as a PLC meter, may include selecting one or more transmit sub-bands on which to transmit frames, where the transmit sub-bands comprise groups of carrier frequencies. The PLC device then generates a frame comprising a tone map that indicates which transmit sub-bands are used to carry data for the frame. The tone map using two bits per transmit sub-band to indicate a status of each transmit sub-band. The PLC device then transmits the frame on the selected transmit sub-bands. A resolution bit and a mode bit may be used to provide additional information about the transmit sub-bands, such as an amount of power adjustment that has been applied to carrier frequencies and whether dummy bits are transmitted on unused carrier frequencies.

    Abstract translation: 描述了用于电力线通信（PLC）的路由协议的系统和方法。 在一些实施例中，由诸如PLC计量器之类的PLC设备执行的方法可以包括选择在其上发送帧的一个或多个发射子带，其中发射子带包括载波频率组。 然后，PLC设备生成包括音调映射的帧，该音调映射指示哪些发送子带被用于携带用于该帧的数据。 每个发送子带使用两位的色调映射表示每个发送子带的状态。 然后，PLC设备在所选择的发送子带上发送该帧。 可以使用分辨率位和模式位来提供关于发射子带的附加信息，例如已经应用于载波频率的功率调整量以及在未使用的载波频率上是否发送虚拟位。

    Building, transmitting, and receiving frame structures in power line communications
    157.
    发明授权
    Building, transmitting, and receiving frame structures in power line communications 有权
    在电力线通信中构建，发送和接收帧结构

    公开(公告)号：US09252841B2

    公开(公告)日：2016-02-02

    申请号：US14169773

    申请日：2014-01-31

    Applicant: Texas Instruments Incorporated

    Inventor： Anand G Dabak ,  Badri N Varadarajan ,  Il Han Kim ,  Tarkesh Pande

    IPC: H04L27/00 ,  H04J3/16 ,  H04B3/54 ,  H04B3/30 ,  H04B1/69

    CPC classification number: H04L69/22 ,  H04B3/30 ,  H04B3/54 ,  H04B3/542 ,  H04B10/11 ,  H04B2001/6912

    Abstract: Systems and methods for building, transmitting, and receiving frame structures in power line communications (PLC) are described. Various techniques described herein provide a preamble design using one or more symbols based on a chirp signal that yields a low peak-to-average power ratio (PAPR). According to some techniques, the preamble may be constructed with one or more different types and/or number of symbols configured to identify a PLC domain operating in close physical proximity to another PLC domain. According to other techniques, one or more preamble symbols may be interspersed within a header portion of a PLC frame to facilitate estimation of a frame boundary and/or sampling frequency offset, for example, in the presence of impulsive noise. According to yet other techniques, a PLC detector may be capable of receiving and decoding two or more types of PLC frames (e.g., using different PLC standards).

    Abstract translation: 描述了在电力线通信（PLC）中构建，发送和接收帧结构的系统和方法。 本文描述的各种技术基于产生低峰值与平均功率比（PAPR）的啁啾信号提供使用一个或多个符号的前导码设计。 根据一些技术，可以使用一个或多个不同类型和/或符号数来构造前导码，该符号被配置为识别在与另一个PLC域紧密物理接近的操作的PLC域。 根据其他技术，一个或多个前导符号可以散布在PLC帧的报头部分内，以便于例如在存在脉冲噪声的情况下估计帧边界和/或采样频率偏移。 根据其他技术，PLC检测器可能能够接收和解码两个或更多类型的PLC帧（例如，使用不同的PLC标准）。

    Long Preamble and Duty Cycle Based Coexistence Mechanism for Power Line Communication (PLC) Networks
    158.
    发明申请
    Long Preamble and Duty Cycle Based Coexistence Mechanism for Power Line Communication (PLC) Networks 审中-公开
    电力线通信（PLC）网络的长序列和占空比共存机制

    公开(公告)号：US20150349844A1

    公开(公告)日：2015-12-03

    申请号：US14824506

    申请日：2015-08-12

    Applicant: Texas Instruments Incorporated

    Inventor： Kumaran Vijayasankar ,  Ramanuja Vedantham ,  Tarkesh Pande

    IPC: H04B3/54

    CPC classification number: H04B3/54 ,  H04B2203/5408 ,  H04B2203/5416 ,  H04B2203/5433 ,  H04B2203/5445

    Abstract: Embodiments of methods and systems for supporting coexistence of multiple technologies in a Power Line Communication (PLC) network are disclosed. A long coexistence preamble sequence may be transmitted by a device that has been forced to back off the PLC channel multiple times. The long coexistence sequence provides a way for the device to request channel access from devices on the channel using other technology. The device may transmit a data packet after transmitting the long coexistence preamble sequence. A network duty cycle time may also be defined as a maximum allowed duration for nodes of the same network to access the channel. When the network duty cycle time occurs, all nodes will back off the channel for a duty cycle extended inter frame space before transmitting again. The long coexistence preamble sequence and the network duty cycle time may be used together.

    Abstract translation: 公开了用于支持电力线通信（PLC）网络中的多种技术共存的方法和系统的实施例。 长时间的共存前导序列可以被被强制退出PLC信道的设备多次发送。 长的共存序列为设备提供了一种使用其他技术从信道上的设备请求信道访问的方法。 在发送长共存前导序列之后，设备可以发送数据分组。 网络占空比时间也可以被定义为同一网络的节点访问信道的最大允许持续时间。 当发生网络占空比时间时，所有节点将在再次发送之前退出占空比扩展帧间间隔的信道。 长共存前序序列和网络占空比时间可以一起使用。

    Method to use a preamble with band extension in power line communications
    159.
    发明授权
    Method to use a preamble with band extension in power line communications 有权
    在电力线通信中使用带扩展的前导码的方法

    公开(公告)号：US09100102B2

    公开(公告)日：2015-08-04

    申请号：US14052913

    申请日：2013-10-14

    Applicant: Texas Instruments Incorporated

    Inventor： Il Han Kim ,  Tarkesh Pande ,  Anuj Batra

    IPC: H04B3/00 ,  H04B3/54

    CPC classification number: H04B3/542 ,  H04B2203/5433 ,  H04B2203/5466

    Abstract: Embodiments include methods of powerline communications using a preamble with band extension is provided. A method may include receiving a packet data unit PDU. Bit-level repetition is applied to at least a portion of the PDU to create a repeated portion. Interleaving is performed per a subchannel. Pilot tones are inserted in the interleaved portion. Each data tone is modulated with respect to a nearest one of the inserted pilot tones. The PDU is transmitted over a power line.

    Abstract translation: 实施例包括使用带扩展的前置码的电力线通信的方法。 一种方法可以包括接收分组数据单元PDU。 位层重复被应用于PDU的至少一部分以产生重复的部分。 每个子信道执行交织。 引导音被插入交错部分。 每个数据音调相对于插入的导频音中最接近的一个进行调制。 PDU通过电力线传输。

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