公开(公告)号：US20170366230A1

公开(公告)日：2017-12-21

申请号：US15695983

申请日：2017-09-05

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Tarkesh Pande ,  Anand G. Dabak ,  Il-Han Kim

IPC: H04B3/54

CPC classification number: H04B3/542 ,  H04B2203/5408 ,  H04B2203/5416

Abstract: Embodiments of the invention provide multiple cyclic prefix lengths for either both the data-payload and frame control header or only the data payload. Frame control header (FCH) and data symbols have an associated cyclic prefix. A table is transmitted in the FCH symbols, which includes a cyclic prefix field to identify the cyclic prefix length used in the data payload. A receiver may know the cyclic prefix length used in the FCH symbols in one embodiment. In other embodiments, the receiver does not know the FCH cyclic prefix length and, therefore, attempts to decode the FCH symbols using different possible cyclic prefix lengths until the FCH symbols are successfully decoded.

公开(公告)号：US20170199034A1

公开(公告)日：2017-07-13

申请号：US15472602

申请日：2017-03-29

Applicant: Texas Instruments Incorporated

Inventor： Deric Wayne Waters ,  Tarkesh Pande

IPC: G01C17/38 ,  G06K7/14 ,  G06K7/10 ,  G01C17/02 ,  G06K19/06

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

Abstract: In a disclosed embodiment, a system includes a digital imaging device, an electronic compass (e-compass), and a processor coupled to the digital imaging device and the e-compass. The processor is operable to execute instructions that cause the image device to scan a visual code, read a yaw angle from the visual code, cause the e-compass to obtain magnetic field measurements, estimate a yaw angle based on the magnetic field measurements, compare the yaw angle read from the visual code and the estimated yaw angle to determine a quality factor; and determine whether the e-compass is calibrated based at least partially upon the quality factor.

公开(公告)号：US09503156B2

公开(公告)日：2016-11-22

申请号：US15045909

申请日：2016-02-17

Applicant: Texas Instruments Incorporated

Inventor： Ramanuja Vedantham ,  Anand Dabak ,  Tarkesh Pande

IPC: H04B3/00 ,  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。

公开(公告)号：US20160330213A1

公开(公告)日：2016-11-10

申请号：US15216291

申请日：2016-07-21

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Kumaran Vijayasankar ,  Ramanuja Vedantham ,  Tarkesh Pande

IPC: H04L29/06

CPC classification number: H04L63/123 ,  G06F15/177 ,  H04B3/54 ,  H04B3/542 ,  H04B2203/5408 ,  H04L9/0819 ,  H04L9/30 ,  H04L9/3242 ,  H04L63/0428 ,  H04L63/061 ,  H04L63/0876 ,  H04L2209/24

Abstract: Embodiments of the invention provide systems and methods for a cipher then segment approach in a Power Line Communication (PLC). A node or device generates frames to be transmitted to a destination node in the PLC network. A processor in the node is configured to generate a data payload comprising data to be sent to the destination node. The processor divides the data payload into two or more payload segments and encrypts the payload segments. The processor creates a frame for each of the encrypted payload segments, wherein each frame comprises a message integrity code. The processor creates a segment identifier for each frame using the message integrity code and an authentication key that is shared with the destination PLC node. The segment identifier is added to each frame.

公开(公告)号：US09438310B2

公开(公告)日：2016-09-06

申请号：US13781452

申请日：2013-02-28

Applicant: Texas Instruments Incorporated

Inventor： Tarkesh Pande ,  Anand G. Dabak ,  Il-Han Kim

IPC: H04L12/28 ,  H04B3/54

CPC classification number: H04B3/542 ,  H04B2203/5408 ,  H04B2203/5416

Abstract: Embodiments of the invention provide multiple cyclic prefix lengths for either both the data-payload and frame control header or only the data payload. Frame control header (FCH) and data symbols have an associated cyclic prefix. A table is transmitted in the FCH symbols, which includes a cyclic prefix field to identify the cyclic prefix length used in the data payload. A receiver may know the cyclic prefix length used in the FCH symbols in one embodiment. In other embodiments, the receiver does not know the FCH cyclic prefix length and, therefore, attempts to decode the FCH symbols using different possible cyclic prefix lengths until the FCH symbols are successfully decoded.

Abstract translation: 本发明的实施例为数据有效载荷和帧控制报头或仅数据有效载荷提供多个循环前缀长度。 帧控制报头（FCH）和数据符号具有关联的循环前缀。 在FCH符号中发送表，其包括循环前缀字段以标识在数据有效载荷中使用的循环前缀长度。 在一个实施例中，接收机可以知道在FCH符号中使用的循环前缀长度。 在其他实施例中，接收机不知道FCH循环前缀长度，因此，尝试使用不同的可能循环前缀长度对FCH符号进行解码，直到FCH符号被成功解码。

公开(公告)号：US09360560B2

公开(公告)日：2016-06-07

申请号：US14686310

申请日：2015-04-14

Applicant: Texas Instruments Incorporated

Inventor： Goutam Dutta ,  Tarkesh Pande ,  Sandeep Rao ,  Deric W. Waters

IPC: G01S19/47 ,  G01C21/16 ,  G01S19/20 ,  G01S19/49 ,  G01S19/52

CPC classification number: G01S19/47 ,  G01C21/165 ,  G01S19/20 ,  G01S19/49 ,  G01S19/52

Abstract: Embodiments of the disclosure provide a cross coupled position engine architecture for sensor integration in a Global Navigation Satellite System. In one embodiment, a data processing engine for processing inertial sensor data within a positioning system receiver is disclosed. The data processing engine includes a first input for receiving the sensor data, and a second input for receiving a positioning data. The data processing system also includes a memory and a processor. The processor of the data processing system is coupled to the memory and to the first and second input. The processor of the data processing system is configured to calculate a net acceleration profile data from the inertial sensor data and from the positioning data. The net acceleration profile data calculated by the processor of the data processing system is used for the Global Positioning System (GPS) receiver to subsequently calculate a position and a velocity data.

Abstract translation: 本公开的实施例提供了用于全球导航卫星系统中的传感器集成的交叉耦合位置引擎结构。 在一个实施例中，公开了一种用于在定位系统接收器内处理惯性传感器数据的数据处理引擎。 数据处理引擎包括用于接收传感器数据的第一输入端和用于接收定位数据的第二输入端。 数据处理系统还包括存储器和处理器。 数据处理系统的处理器耦合到存储器和第一和第二输入端。 数据处理系统的处理器被配置为从惯性传感器数据和定位数据计算净加速度曲线数据。 由数据处理系统的处理器计算的净加速度曲线数据用于全球定位系统（GPS）接收机，以随后计算位置和速度数据。

公开(公告)号：US20150358050A1

公开(公告)日：2015-12-10

申请号：US14586867

申请日：2014-12-30

Applicant: Texas Instruments Incorporated

Inventor： Srinivas Lingam ,  Tarkesh Pande

IPC: 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生成第一调制分组。 阈值基于第一能量量。

公开(公告)号：US20150341084A1

公开(公告)日：2015-11-26

申请号：US14816671

申请日：2015-08-03

Applicant: Texas instruments incorporated

Inventor： Il Han Kim ,  Tarkesh Pande ,  Anuj Batra

IPC: 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 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

公开(公告)号：US20150236670A1

公开(公告)日：2015-08-20

申请号：US14624218

申请日：2015-02-17

Applicant: Texas Instruments Incorporated

Inventor： Tarkesh Pande ,  Srinivas Lingam

IPC: H03H17/02

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.

Abstract translation: 包括微分器，变换器，积分器和乘法器的级联积分器梳状滤波器（CIC）。 微分器被配置为区分输入信号以产生微分输入信号。 速率变换器耦合到微分器，并且被配置为基于插值速率内插差分输入信号以产生上采样信号。 积分器耦合到速率变换器，并被配置为集成上采样信号以产生输出信号。 乘法器耦合到微分器，变换器和积分器，并且被配置为基于插值速率来增加输出信号幅度。

公开(公告)号：US20150160350A1

公开(公告)日：2015-06-11

申请号：US14604102

申请日：2015-01-23

Applicant: Texas Instruments Incorporated

Inventor： Deric Wayne Waters ,  Tarkesh Pande

IPC: G01S19/24

CPC classification number: G01S19/36 ,  G01S19/24 ,  H01Q3/12

Abstract: Embodiments of the invention provide a system and method to improve the performance of a GNSS receiver using antenna switching. The system has a plurality of antennas and at least one radio frequency RF chain. There are fewer RF chain(s) than antennas. A receiver processes a plurality of signals sent by a plurality of transmitters. The system also includes antenna switches and switch controller. The method includes processing signals from a plurality of satellite vehicles SVs using an antenna selected from a plurality of antennas.

Abstract translation: 本发明的实施例提供了一种使用天线切换来提高GNSS接收机的性能的系统和方法。 该系统具有多个天线和至少一个射频RF链。 射频链比天线少。 接收机处理由多个发射机发送的多个信号。 该系统还包括天线开关和开关控制器。 该方法包括使用从多个天线中选择的天线处理来自多个卫星载波SV的信号。