公开(公告)号：US10599518B2

公开(公告)日：2020-03-24

申请号：US14985851

申请日：2015-12-31

Applicant: Texas Instruments Incorporated

Inventor： Sandeep Rao ,  Karthik Ramasubramanian ,  Brian Paul Ginsburg

IPC: G06F11/10 ,  G01S13/42 ,  G01S13/34 ,  G01S13/93 ,  G01S13/58 ,  G01S7/35 ,  G06F3/06 ,  G01S13/931

Abstract: Data memory protection is provided for a signal processing system such as a radar system in which the data memory is protected with a common set of parity bits rather than requiring a set of parity bits for each memory word as in Error Correction Coded (ECC) memories. The common set of parity bits may be updated as memory words in the data memory are accessed as part of signal processing of one or more digital signals. The memory protection ensures that in the absence of memory errors the common parity bits are zero at the end of processing the digital signals as long as each word in the data memory that is used for storing the signal processing data is written and read an equal number of times.

公开(公告)号：US10598767B2

公开(公告)日：2020-03-24

申请号：US16253790

申请日：2019-01-22

Applicant: Texas Instruments Incorporated

Inventor： Karthik Subburaj ,  Brian Paul Ginsburg ,  Daniel Colum Breen ,  Sandeep Rao ,  Karthik Ramasubramanian

IPC: G01S7/40 ,  G01S7/03 ,  G01S7/35 ,  G01S13/93 ,  G01S13/02 ,  G01S13/931

Abstract: Methods for monitoring of performance parameters of one or more receive channels and/or one or more transmit channels of a radar system-on-a-chip (SOC) are provided. The radar SOC may include a loopback path coupling at least one transmit channel to at least one receive channel to provide a test signal from the at least one transmit channel to the at least one receive channel when the radar SOC is operated in test mode. In some embodiments, the loopback path includes a combiner coupled to each of one or more transmit channels, a splitter coupled to each of one or more receive channels, and a single wire coupling an output of the combiner to an input of the splitter.

公开(公告)号：US10234542B2

公开(公告)日：2019-03-19

申请号：US14870129

申请日：2015-09-30

Applicant: Texas Instruments Incorporated

Inventor： Karthik Subburaj ,  Brian Paul Ginsburg ,  Daniel Colum Breen ,  Sandeep Rao ,  Karthik Ramasubramanian

IPC: G01S7/03 ,  G01S7/35 ,  G01S7/40 ,  G01S13/02 ,  G01S13/93

Abstract: Methods for monitoring of performance parameters of one or more receive channels and/or one or more transmit channels of a radar system-on-a-chip (SOC) are provided. The radar SOC may include a loopback path coupling at least one transmit channel to at least one receive channel to provide a test signal from the at least one transmit channel to the at least one receive channel when the radar SOC is operated in test mode. In some embodiments, the loopback path includes a combiner coupled to each of one or more transmit channels, a splitter coupled to each of one or more receive channels, and a single wire coupling an output of the combiner to an input of the splitter.

公开(公告)号：US20190004167A1

公开(公告)日：2019-01-03

申请号：US16121689

申请日：2018-09-05

Applicant: Texas Instruments Incorporated

Inventor： Sandeep Rao ,  Karthik Subburaj ,  Brian Ginsburg ,  Karthik Ramasubramanian ,  Jawaharlal Tangudu ,  Sachin Bharadwaj

IPC: G01S13/58 ,  G01S13/34 ,  G01S7/35 ,  G01S13/93

Abstract: The disclosure provides a radar apparatus for estimating a range of an obstacle. The radar apparatus includes a local oscillator that generates a first ramp segment and a second ramp segment. The first ramp segment and the second ramp segment each includes a start frequency, a first frequency and a second frequency. The first frequency of the second ramp segment is equal to or greater than the second frequency of the first ramp segment when a slope of the first ramp segment and a slope of the second ramp segment are equal and positive. The first frequency of the second ramp segment is equal to or less than the second frequency of the first ramp segment when the slope of the first ramp segment and the slope of the second ramp segment are equal and negative.

公开(公告)号：US20180292510A1

公开(公告)日：2018-10-11

申请号：US15692010

申请日：2017-08-31

Applicant: Texas Instruments Incorporated

Inventor： Sandeep Rao ,  Brian Ginsburg

IPC: G01S7/40 ,  H01Q3/26

Abstract: A cascaded radar system includes a device that is cascaded to another device to form a virtual antenna array, which may be used by each cascaded device to receive a return-microwave radar signal. A determination of a common dominant signal from the cascaded devices may be used to determine a phase mismatch, which is further utilized as a basis for adjusting a signal phase of the formed virtual antenna of the cascaded radar system.

公开(公告)号：US20180172813A1

公开(公告)日：2018-06-21

申请号：US15665663

申请日：2017-08-01

Applicant: Texas Instruments Incorporated

Inventor： Sandeep Rao ,  Karthik Subburaj ,  Sriram Murali ,  Karthik Ramasubramanian

IPC: G01S13/28 ,  G06F17/14

CPC classification number: G01S13/282 ,  G01S7/354 ,  G01S7/415 ,  G01S13/343 ,  G01S13/536 ,  G01S13/931 ,  G01S2007/356 ,  G06F17/13 ,  G06F17/142 ,  H04N5/23296

Abstract: A radar system is provided that includes a radar transceiver integrated circuit (IC) configurable to transmit a first frame of chirps, and another radar transceiver IC configurable to transmit a second frame of chirps at a time delay ΔT, wherein ΔT=Tc/K, K≥2 and Tc is an elapsed time from a start of one chirp in the first frame and the second frame and a start of a next chirp in the first frame and the second frame, wherein the radar system is configured to determine a velocity of an object in a field of view of the radar system based on first digital intermediate frequency signals generated responsive to receiving reflected chirps of the first frame and second digital IF signals generated responsive to receiving reflected chirps of the time delayed second frame, wherein the maximum measurable velocity is increased by a factor of K.

公开(公告)号：US09829566B2

公开(公告)日：2017-11-28

申请号：US14552505

申请日：2014-11-25

Applicant: Texas Instruments Incorporated

Inventor： Sandeep Rao ,  Karthik Subburaj

IPC: G01S7/02 ,  G01S7/28 ,  G01S13/58 ,  G01S13/34 ,  G01S13/38 ,  G01S13/93

CPC classification number: G01S7/023 ,  G01S7/28 ,  G01S7/354 ,  G01S13/34 ,  G01S13/343 ,  G01S13/38 ,  G01S13/583 ,  G01S13/931

Abstract: Radar detection of an object is achieved by identifying a first range associated with a possible object based on a first return from a first radar transmission having a first chirp rate, and identifying a second range associated with the possible object based on a second return from a second radar transmission having a second chirp rate that differs from the first chirp rate. The first and second ranges are evaluated together to determine whether the possible object is a true object.

公开(公告)号：US09759807B2

公开(公告)日：2017-09-12

申请号：US14329446

申请日：2014-07-11

Applicant: Texas Instruments Incorporated

Inventor： Sandeep Rao ,  Saurabh Khanna

IPC: G01S13/93 ,  G01S7/35 ,  G01S7/03 ,  G01S13/34 ,  G01S13/42 ,  H01Q3/26 ,  H01Q1/32 ,  H01Q3/24 ,  H01Q21/08

CPC classification number: G01S7/032 ,  G01S7/354 ,  G01S13/34 ,  G01S13/42 ,  G01S13/931 ,  H01Q1/3233 ,  H01Q3/247 ,  H01Q3/2629 ,  H01Q21/08

Abstract: A radar apparatus for estimating position of a plurality of obstacles. The radar apparatus includes a receive antenna unit. The receive antenna unit includes a linear array of antennas and an additional antenna at a predefined offset from at least one antenna in the linear array of antennas. The radar apparatus also includes a signal processing unit. The signal processing unit estimates an azimuth frequency associated with each obstacle of the plurality of obstacles from a signal received from the plurality of obstacles at the linear array of antennas. In addition, the signal processing unit estimates an azimuth angle and an elevation angle associated with each obstacle from the estimated azimuth frequency associated with each obstacle.

公开(公告)号：US20160252607A1

公开(公告)日：2016-09-01

申请号：US14633684

申请日：2015-02-27

Applicant: Texas Instruments Incorporated

Inventor： Krishnakant Vijay Saboo ,  Sandeep Rao

IPC: G01S13/02 ,  G01S13/58

CPC classification number: G01S13/02 ,  G01S7/415 ,  G01S13/58 ,  G01S13/584 ,  G01S2007/356 ,  G06F3/011 ,  G06F3/017

Abstract: A method for operating a frequency modulated continuous wave (FMCW) radar system is provided that includes generating digital intermediate frequency (IF) signals from radio frequency signals received by a small receive antenna array in the FMCW radar system and processing the digital IF signals to determine whether or not a gesture was performed.

Abstract translation: 提供了一种用于操作调频连续波（FMCW）雷达系统的方法，其包括从由FMCW雷达系统中的小接收天线阵列接收的射频信号产生数字中频（IF）信号，并处理数字IF信号以确定 是否执行手势。

公开(公告)号：US20160061942A1

公开(公告)日：2016-03-03

申请号：US14470414

申请日：2014-08-27

Applicant: Texas Instruments Incorporated

Inventor： Sandeep Rao ,  Karthik Subburaj ,  Brian Ginsburg ,  Karthik Ramasubramanian ,  Jawaharlal Tangudu ,  Sachin Bharadwaj

IPC: G01S13/02 ,  G01S13/58 ,  G01S7/35

CPC classification number: G01S13/583 ,  G01S7/35 ,  G01S13/343 ,  G01S2013/9314

Abstract: The disclosure provides a radar apparatus for estimating a range of an obstacle. The radar apparatus includes a local oscillator that generates a first ramp segment and a second ramp segment. The first ramp segment and the second ramp segment each includes a start frequency, a first frequency and a second frequency. The first frequency of the second ramp segment is equal to or greater than the second frequency of the first ramp segment when a slope of the first ramp segment and a slope of the second ramp segment are equal and positive. The first frequency of the second ramp segment is equal to or less than the second frequency of the first ramp segment when the slope of the first ramp segment and the slope of the second ramp segment are equal and negative.

Abstract translation: 本公开提供了一种用于估计障碍物的范围的雷达装置。 雷达装置包括产生第一斜坡段和第二斜坡段的本地振荡器。 第一斜坡段和第二斜坡段各自包括起始频率，第一频率和第二频率。 当第一斜坡段的斜率和第二斜坡段的斜率相等且为正时，第二斜坡段的第一频率等于或大于第一斜坡段的第二频率。 当第一斜坡段的斜率和第二斜坡段的斜率相等且为负时，第二斜坡段的第一频率等于或小于第一斜坡段的第二频率。