公开(公告)号：US09258107B1

公开(公告)日：2016-02-09

申请号：US14580595

申请日：2014-12-23

Applicant: Texas Instruments Incorporated

Inventor： Nirmal C. Warke ,  Lars Morten Jorgensen ,  Srinath Hosur

IPC: H04L7/00 ,  H04L7/02

CPC classification number: H04L27/0014 ,  H04L2027/0053 ,  H04L2027/0093

Abstract: A system and method for tracking noise in a received signal uses a forward/backward Decision-Directed Phase Tracking Loop to generate a phase-noise compensation signal that removes phase noise from received single-carrier signals.

Abstract translation: 用于在接收信号中跟踪噪声的系统和方法使用前向/后向决策定向相位循环来产生从接收的单载波信号中去除相位噪声的相位噪声补偿信号。

公开(公告)号：US09166270B2

公开(公告)日：2015-10-20

申请号：US13683735

申请日：2012-11-21

Applicant: Texas Instruments Incorporated

Inventor： Swaminathan Sankaran ,  Brian P. Ginsburg ,  Vijay B. Rentala ,  Srinath M. Ramaswamy ,  Eunyoung Seok ,  Baher Haroun ,  Bradley A. Kramer ,  Hassan Ali ,  Nirmal C. Warke

IPC: H01P5/10 ,  H05K1/02 ,  H03H1/00

CPC classification number: H01P5/10 ,  H03H1/0007 ,  H05K1/0216

Abstract: An apparatus is provided. Transmission line cells are formed in a first region. A first metallization layer is formed over the transmission line cells within a portion of the first region. At least a portion of the first metallization layer is electrically coupled to the plurality of transmission line cells. A second metallization layer is formed over the first metallization layer with an interconnect portion, and overlay portion, and a first balun. The interconnect portion at least partially extends into the first region, and the overlay portion is within the first region. The first balun winding is electrically coupled to the overlay portion and partially extends into a second region. The first region partially surrounds the second region. A third metallization layer is formed over the second metallization layer having a second balun winding within the second region, where the second winding is generally coaxial with the first balun winding.

Abstract translation: 提供了一种装置。 传输线路单元形成在第一区域中。 在第一区域的一部分内的传输线单元上形成第一金属化层。 第一金属化层的至少一部分电耦合到多个传输线单元。 在第一金属化层上形成第二金属化层，其具有互连部分，覆盖部分和第一平衡 - 不平衡变换器。 互连部分至少部分地延伸到第一区域中，并且覆盖部分在第一区域内。 第一平衡 - 不平衡变压器绕组电耦合到覆盖部分并且部分地延伸到第二区域中。 第一区域部分地围绕第二区域。 在第二金属化层上形成第三金属化层，该第二金属化层在第二区域内具有第二平衡 - 不平衡变压器绕组，其中第二绕组大体上与第一平衡 - 不平衡变压器绕组同轴。

公开(公告)号：US08837561B2

公开(公告)日：2014-09-16

申请号：US13683826

申请日：2012-11-21

Applicant: Texas Instruments Incorporated

Inventor： Nirmal C. Warke ,  Bradley A. Kramer ,  Robert F. Kramer

IPC: H04L5/16 ,  H04L7/10

CPC classification number: H04L7/10 ,  H04L27/34

Abstract: A method is provided. An initial bit sequence is received by a receiver. A local oscillator is locked initially to a local reference and subsequently to the received signal using the initial bit sequence, and automatic gain control (AGC) is performed once the local oscillator is locked to the local reference. A Costas loop is then activated so as to achieve carrier frequency offset (CFO) lock, and sign inversion is detected. The receiver then synchronized with an end-of-training pattern.

Abstract translation: 提供一种方法。 初始位序列由接收器接收。 本地振荡器最初被锁定到本地参考，然后使用初始位序列被锁定到接收到的信号，并且一旦本地振荡器被锁定到本地参考，就执行自动增益控制（AGC）。 然后激活科斯塔斯循环，以实现载波频率偏移（CFO）锁定，并且检测到符号反转。 接收器然后与训练结束模式同步。

公开(公告)号：US11754905B2

公开(公告)日：2023-09-12

申请号：US16586644

申请日：2019-09-27

Applicant: Texas Instruments Incorporated

Inventor： Jeffrey Matthew Kempf ,  Nirmal C. Warke ,  David P. Magee ,  Rahmi Hezar ,  Baher S. Haroun

IPC: G01S17/08 ,  G02F1/29 ,  G01S7/481

CPC classification number: G02F1/292 ,  G01S7/4814 ,  G01S17/08

Abstract: In described examples, a system (e.g., a security system or a vehicle operator assistance system) is configured to configure a phased spatial light modulator (SLM) to generate a diffraction pattern. A coherent light source is optically coupled to direct coherent light upon the SLM. The SLM is configured to project diffracted coherent light toward a region of interest. An optical element is configured to focus the diffracted coherent light toward the at least one region of interest.

公开(公告)号：US11460551B2

公开(公告)日：2022-10-04

申请号：US16287411

申请日：2019-02-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Baher Haroun ,  Rahmi Hezar ,  Srinath Ramaswamy ,  Nirmal C. Warke ,  David Magee ,  Ting Li

IPC: G01S7/481 ,  G01S17/10 ,  G01S7/4865 ,  G01S7/484

Abstract: A pulsed light source illuminates a scene with a virtual array of points. Light reflected by the scene is detected by a small pixel array, allowing generation of a three-dimensional map of the scene. A processing element processing data output by the small pixel array uses a multipath resolution algorithm to resolve individual objects in the scene.

公开(公告)号：US11333760B2

公开(公告)日：2022-05-17

申请号：US15649493

申请日：2017-07-13

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Nirmal C. Warke ,  David P. Magee ,  Baher S. Haroun

IPC: G01S17/26 ,  G01S7/481

Abstract: An optical time of flight system includes a transmitter and a receiver. The transmitter is configured to generate a modulation signal having a modulation signal frequency that varies as a function of time, generate an optical waveform with amplitude modulation corresponding to the modulation signal, and direct the optical waveform toward a field of view (FOV). The receiver is configured to receive the optical waveform reflected off of an object within the FOV and determine a distance to the object based on a time of flight from the transmitter to the object and back to the receiver.

公开(公告)号：US11106030B2

公开(公告)日：2021-08-31

申请号：US15592884

申请日：2017-05-11

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： David P. Magee ,  Nirmal C. Warke ,  Stephen Aldridge Shaw ,  Terry Alan Bartlett ,  Rick Oden

IPC: G02B26/08 ,  G01S7/484 ,  G01S17/10 ,  G01S7/481

Abstract: An optical distance measuring system includes a first transmitter, a first solid state device, and a receiver. The first transmitter is configured to generate a first optical waveform. The first solid state device is configured to receive the first optical waveform and steer the first optical waveform toward a target object. The receiver is configured to receive the first optical waveform reflected off of the first target object and determine a distance to the first target object based on a time of flight from the transmitter to the first target object and back to the receiver.

公开(公告)号：US10690756B2

公开(公告)日：2020-06-23

申请号：US15484975

申请日：2017-04-11

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Nirmal C. Warke ,  David P. Magee ,  Baher S. Haroun

IPC: G01S7/487 ,  G01S17/10

Abstract: Described examples include an integrated circuit that includes an encoder configured to modulate a driving signal for an optical transmitter with a plurality of encoded pulses corresponding to a code, in which the driving signal is transmitted to the optical transmitter periodically. The integrated circuit also includes a demodulator configured to receive a received signal from an optical receiver that is configured to receive a reflection of light transmitted by the optical transmitter off an object, the demodulator configured to discriminate the plurality of encoded pulses in the received signal and estimate a distance of the object.

公开(公告)号：US09484630B2

公开(公告)日：2016-11-01

申请号：US14734371

申请日：2015-06-09

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Baher S. Haroun ,  Marco Corsi ,  Siraj Akhtar ,  Nirmal C. Warke

IPC: H01Q1/24 ,  H01Q3/44 ,  H01L23/66 ,  H01Q3/26 ,  H01Q9/04 ,  H01L23/31 ,  H01L23/00

CPC classification number: H01Q3/44 ,  H01L23/3107 ,  H01L23/66 ,  H01L24/16 ,  H01L24/48 ,  H01L24/49 ,  H01L2223/6677 ,  H01L2224/16225 ,  H01L2224/16227 ,  H01L2224/16245 ,  H01L2224/48227 ,  H01L2224/48247 ,  H01L2224/49175 ,  H01L2924/00014 ,  H01L2924/12041 ,  H01L2924/12042 ,  H01L2924/12043 ,  H01L2924/14 ,  H01L2924/3011 ,  H01Q3/26 ,  H01Q9/0407 ,  H01L2924/00 ,  H01L2224/45099 ,  H01L2224/45015 ,  H01L2924/207

Abstract: In some developing interconnect technologies, such as chip-to-chip optical interconnect or metal waveguide interconnects, misalignment can be a serious issue. Here, however, a interconnect that uses an on-chip directional antenna (which operates in the sub-millimeter range) to form a radio frequency (RF) interconnect through a dielectric waveguide is provided. This system allows for misalignment while providing the increased communication bandwidth.

公开(公告)号：US09425808B1

公开(公告)日：2016-08-23

申请号：US14732300

申请日：2015-06-05

Applicant: Texas Instruments Incorporated

Inventor： Bradley Allen Kramer ,  Swaminathan Sankaran ,  Hassan Ali ,  Nirmal C. Warke

IPC: H03L7/06 ,  H03L7/085 ,  H03L7/099

CPC classification number: H03L7/085 ,  H03L7/087

Abstract: A frequency detection technique includes generating first and second signals such that a frequency of the first signal is the same as a frequency of the second signal and such that the second signal is phase-shifted by a fixed amount with respect to the first signal. The technique further includes generating a third signal having a frequency that corresponds to an absolute value of a difference between the frequency of the first signal and an integer multiple of a frequency of the reference signal. The technique further includes generating a fourth signal having a frequency that corresponds to an absolute value of a difference between the frequency of the second signal and an integer multiple of the frequency of the reference signal. The technique further includes generating an fifth signal indicative of whether a phase relationship between the third and fourth signals is a leading phase relationship, a lagging phase relationship, or an in-phase relationship.

Abstract translation: 频率检测技术包括产生第一和第二信号，使得第一信号的频率与第二信号的频率相同，并且使得第二信号相对于第一信号相移固定的量。 该技术还包括产生具有与第一信号的频率和参考信号的频率的整数倍之间的差的绝对值相对应的频率的第三信号。 该技术还包括产生具有对应于第二信号的频率与参考信号的频率的整数倍的差的绝对值的频率的第四信号。 该技术还包括产生指示第三和第四信号之间的相位关系是否是前导相位关系，滞后相位关系或同相关系的第五信号。