中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

17 records (took 0.016 seconds)

    Time-of-Flight (TOF) Receiver with High Dynamic Range
    1.
    发明申请
    Time-of-Flight (TOF) Receiver with High Dynamic Range 审中-公开

    公开(公告)号：US20200162097A1

    公开(公告)日：2020-05-21

    申请号：US16748849

    申请日：2020-01-22

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Jagannathan Venkataraman ,  Prabu Sankar Thirugnanam ,  Raja Reddy Patukuri ,  Sandeep Kesrimal Oswal

    IPC: H03M3/00

    Abstract: The disclosure provides a receiver with high dynamic range. The receiver includes a photodiode that generates a current signal. A coupling capacitor is coupled to the photodiode, and generates a modulation signal in response to the current signal received from the photodiode. A sigma delta analog to digital converter (ADC) is coupled to the coupling capacitor, and generates a digital data in response to the modulation signal. A digital mixer is coupled to the sigma delta ADC, and generates an in-phase component and a quadrature component corresponding to the digital data. A processor is coupled to the digital mixer, and processes the in-phase component and the quadrature component corresponding to the digital data.

    Optical time of flight sensor for navigation systems in robotic applications
    2.
    发明授权
    Optical time of flight sensor for navigation systems in robotic applications 有权

    公开(公告)号：US11733360B2

    公开(公告)日：2023-08-22

    申请号：US16663016

    申请日：2019-10-24

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Yichang Wang ,  Karthik Rajagopal Ganapathy ,  Raja Reddy Patukuri

    IPC: G01S7/486 ,  G05D1/00 ,  G01S17/89 ,  B25J9/16 ,  G01S7/4865

    CPC classification number: G01S7/4865 ,  B25J9/163 ,  G01S17/89 ,  G05D1/0088

    Abstract: A time of flight (ToF) system comprises three photoemitters, a photosensor, and a controller. The first photoemitter transmits light onto objects at first height, the second photoemitter onto objects at second, lower height, and the third photoemitter onto objects at third, lowest height. The controller causes one of the photoemitters to transmit modulated light and the photosensor to receive reflections from the scene. The controller determines a depth map for the corresponding height based on phase differences between the transmitted and reflected light. In some examples, the ToF system is included in an autonomous robot's navigation system. The navigation system identifies overhanging objects at the robot's top from the depth map at the first height, obstacles in the navigation route from the depth map at the second height, and cliffs and drop-offs in the ground surface in front of the robot from the depth map at the third height.

    AC-Coupled Electrocardiogram Signal Acquisition System with Enhanced Common Mode Rejection
    3.
    发明申请
    AC-Coupled Electrocardiogram Signal Acquisition System with Enhanced Common Mode Rejection 有权

    公开(公告)号：US20220416741A1

    公开(公告)日：2022-12-29

    申请号：US17362443

    申请日：2021-06-29

    Applicant: Texas Instruments Incorporated

    Inventor： Sandeep Oswal ,  Raja Reddy Patukuri ,  Aravind Miriyala ,  Anand Hariraj Udupa ,  Hari Babu Tippana ,  Aatish Chandak

    IPC: H03F3/45 ,  A61B5/308

    Abstract: An ECG signal acquisition system includes a first amplifier which has a non-inverting input adapted to be coupled to a first differential input, an inverting input adapted to be coupled to a second differential input, and an output. The system includes first and second biasing resistors coupled between the non-inverting and inverting inputs of the first amplifier. The system includes an average estimation circuit which has a first input coupled to the non-inverting input of the first amplifier and a second input coupled to the inverting input of the first amplifier. The system includes a driver amplifier which has an inverting input coupled to the output of the average estimation circuit, a non-inverting input coupled to receive a reference common-mode voltage, and an output. The system includes a low-pass filter coupled between the output of the driver amplifier and the biasing resistors.

    High accuracy impedance measurement
    6.
    发明授权
    High accuracy impedance measurement 有权

    公开(公告)号：US11579106B2

    公开(公告)日：2023-02-14

    申请号：US16852736

    申请日：2020-04-20

    Applicant: Texas Instruments Incorporated

    Inventor： Aatish Chandak ,  Raja Reddy Patukuri ,  Aravind Miriyala ,  Sandeep Oswal

    IPC: G01N27/02 ,  A61B5/053 ,  A61B5/00 ,  A61B5/11 ,  A61B5/0205 ,  A61B5/024

    Abstract: The disclosure provides a measurement circuit. The measurement circuit includes a control engine. An excitation source is coupled to the control engine. A first set of electrodes and a second set of electrodes are coupled to the excitation source and receive current from the excitation source. The control engine operates the excitation source in a first mode and a second mode. The control engine, in the first mode, measures a parasitic impedance associated with the first and the second set of electrodes, and the control engine, in the second mode, measures an impedance of the first and the second set of electrodes and of an external object.

    METHODS AND APPARATUS TO DETECT PARASITIC RESISTANCES USING DRIVER CIRCUITRY
    8.
    发明公开
    METHODS AND APPARATUS TO DETECT PARASITIC RESISTANCES USING DRIVER CIRCUITRY 审中-公开

    公开(公告)号：US20240201282A1

    公开(公告)日：2024-06-20

    申请号：US18228479

    申请日：2023-07-31

    Applicant: Texas Instruments Incorporated

    Inventor： Anand Hariraj Udupa ,  Aravind Miriyala ,  Raja Reddy Patukuri ,  Harshit Reddy Lingireddy

    IPC: G01R31/52 ,  H03K5/24

    CPC classification number: G01R31/52 ,  H03K5/24

    Abstract: An example apparatus includes: a first switch having a control terminal; a second switch having a first terminal and a control terminal; detection circuitry having a first terminal and a second terminal the detection circuitry configured to detect a parasitic resistance at the first terminal of the second switch; and controller circuitry having a first terminal and a second terminal, the first terminal of the controller circuitry coupled to the control terminal of the first switch and the control terminal of the second switch, the second terminal of the controller circuitry coupled to second terminal of the detection circuitry, the controller circuitry configured to disable the first switch responsive to the detection of the parasitic resistance.

Patent Agency Ranking