-
公开(公告)号：US10748557B2
公开(公告)日：2020-08-18
申请号：US16460651
申请日：2019-07-02
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ganesan Thiagarajan , Tarkesh Pande , David Patrick Magee
Abstract: In described examples, a method for detecting voice activity includes: receiving a first input signal containing noise; sampling the first input signal to form noise samples; determining a first value corresponding to the noise samples; subsequently receiving a second input signal; sampling the second input signal to form second signal samples; determining a second value corresponding to the second signal samples; forming a ratio of the second value to the first value; comparing the ratio to a predetermined threshold value; and responsive to the comparing, indicating whether voice activity is detected in the second input signal.
-
公开(公告)号：US10729381B2
公开(公告)日：2020-08-04
申请号：US15192456
申请日：2016-06-24
Applicant: Texas Instruments Incorporated
Inventor： Tarkesh Pande , David Patrick Magee
Abstract: A photoplethysmogram system includes a plurality of sensors, each sensor capable of providing a sensor signal, and an adaptive filter capable of receiving a first input signal and computing an output. The photoplethysmogram system is capable of operating the filter in sequential stages, such that at each different stage the first input signal is a different sensor signal.
-
公开(公告)号：US20200233208A1
公开(公告)日：2020-07-23
申请号：US16834632
申请日：2020-03-30
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Stephen John Fedigan , David Patrick Magee , Yunhong Li
Abstract: A lens structure system includes a lens structure and a multi-segmented transducer coupled to the lens structure. The multi-segmented transducer includes segments. Each segment is electrically coupled to a respective first conductor and a respective second conductor.
-
公开(公告)号：US10696163B2
公开(公告)日：2020-06-30
申请号：US16366263
申请日：2019-03-27
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Aravind Samba Murthy , David Patrick Magee
Abstract: A method of regenerative braking includes providing an electric motor including at least one stator and a rotor, a speed of the rotor, a motor controller that regulates a current level in the stator winding, a power inverter which controls an energy flow to the stator terminal, and an energy storage system (ESS) which exchanges energy with the motor. A battery management circuit is between the power inverter and the ESS, and a processor has an associated memory storing a regenerative braking (RB) algorithm. The RB algorithm during braking causes the motor controller to execute determining an RB torque value from the rotor speed that maximizes regenerative braking current, and the power inverter is used to redirect the RB current to maximize a power transfer from the motor to the ESS.
-
公开(公告)号：US10591548B2
公开(公告)日：2020-03-17
申请号：US16154451
申请日：2018-10-08
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Rajan Lakshmi Narasimha , David Patrick Magee
Abstract: A controller for driving a motor includes a multiphase driver, an analog-to-digital converter (ADC), impedance estimation circuitry, and fault detection circuitry. The multiphase driver is configured to generate drive signals for energizing each motor phase winding. The ADC is configured to digitize voltage and current from each motor phase winding. The impedance estimation circuitry is configured to determine a phasor value for the digitized voltages and for the digitized currents at a predetermined harmonic frequency, and to determine a sequence impedance value based on the phasor values. The fault detection circuitry is configured to identify a fault in the windings of the motor based on the sequence impedance value.
-
Patent Agency Ranking
公开(公告)号：US20190298198A1
公开(公告)日：2019-10-03
申请号：US16442845
申请日：2019-06-17
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Tarkesh Pande , David Patrick Magee , Rajan Narasimha
Abstract: Disclosed examples include heart rate monitor systems and methods to estimate a patient heart rate or rate of another pulsed signal, in which rate hypotheses or states, are identified for a current time window according to digital sample values of the pulsed signal for a current sample time window, and a rate change value is computed for potential rate transitions between states of the current and previous time windows. Transition pair branch metric values are computed as a function of the rate change value and a frequency domain amplitude of the corresponding rate hypothesis for the current time window, and the pulsed signal rate estimate is determined according to a maximum path metric computed according to the branch metric value and a corresponding path metric value for the previous time window.
-
公开(公告)号：US10339962B2
公开(公告)日：2019-07-02
申请号：US15485165
申请日：2017-04-11
Applicant: Texas Instruments Incorporated
Inventor： Ganesan Thiagarajan , Tarkesh Pande , David Patrick Magee
Abstract: In described examples, a method for detecting voice activity includes: receiving a first input signal containing noise; sampling the first input signal to form noise samples; determining a first value corresponding to the noise samples; subsequently receiving a second input signal; sampling the second input signal to form second signal samples; determining a second value corresponding to the second signal samples; forming a ratio of the second value to the first value; comparing the ratio to a predetermined threshold value; and responsive to the comparing, indicating whether voice activity is detected in the second input signal.
-
公开(公告)号：US10263555B2
公开(公告)日：2019-04-16
申请号：US15916945
申请日：2018-03-09
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Eric James Thomas , David Patrick Magee
Abstract: A method of determining angular position (0) of a rotor of an N-phase permanent magnet motor (PMM). A processor having an associated stored angular position determination (APD) algorithm is programmed to implement the algorithm to cause an associated motor controller to execute steps including forcing one vector at a time a phase vector set of current or voltage vectors to stator terminals of windings for the N-phases a positive and negative magnitude vector, wherein the vector magnitude is sufficiently small to not move the rotor, and a time duration for the forcing current or voltage vectors is essentially constant. The resulting stator current or voltage levels are measured for each current or voltage vector. An N-dimension current vector or voltage vector is generated from superposition of the resulting stator current levels or resulting stator voltage levels. The N-dimension current vector or voltage vector is used to determine angular position.
-
公开(公告)号：US20180304318A1
公开(公告)日：2018-10-25
申请号：US15492433
申请日：2017-04-20
Applicant: Texas Instruments Incorporated
Abstract: Methods and apparatus for surface wetting control are disclosed. In certain described examples, an apparatus can expel fluid from a droplet on a surface using a transducer mechanically coupled to the surface. A first area of the surface can have a first wettability for the fluid, and a second area of the surface can have a second wettability for the fluid. The first wettability of the first area of the surface can be greater than the second wettability of the second area of the surface. The first area and the second area can be arranged in a patterned arrangement.
-
公开(公告)号：US20180293998A1
公开(公告)日：2018-10-11
申请号：US15485165
申请日：2017-04-11
Applicant: Texas Instruments Incorporated
Inventor： Ganesan Thiagarajan , Tarkesh Pande , David Patrick Magee
CPC classification number: G10L25/84 , G10L15/00 , G10L25/09 , G10L25/21 , G10L2025/783
Abstract: In described examples, a method for detecting voice activity includes: receiving a first input signal containing noise; sampling the first input signal to form noise samples; determining a first value corresponding to the noise samples; subsequently receiving a second input signal; sampling the second input signal to form second signal samples; determining a second value corresponding to the second signal samples; forming a ratio of the second value to the first value; comparing the ratio to a predetermined threshold value; and responsive to the comparing, indicating whether voice activity is detected in the second input signal.
-
-
-
-
-
-
-
-
-
Search Results
134
records
(took 0.025 seconds)
