公开(公告)号：US12196587B2

公开(公告)日：2025-01-14

申请号：US18449463

申请日：2023-08-14

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Anand Dabak ,  Srinivas Lingam

IPC: G01F1/66 ,  G01F1/667 ,  G01F1/7082 ,  G01N29/02 ,  G01N29/024 ,  G01N29/36 ,  G01N29/44 ,  G01F1/712 ,  G01F1/74

Abstract: An integrated circuit includes one or more central processing unit (CPU) cores configured to cause a first ultrasonic transducer to generate ultrasonic signals into a fluid moving in a pipe and the first or a second ultrasonic transducer to receive the ultrasonic signals from the fluid. The CPU core(s) also compute a first value indicative of at least one of a standard deviation and a time correlation based on the received ultrasonic signals. The CPU core(s) further determine a second value indicative of a volume of gas bubbles in the fluid using the computed first value indicative of the at least one of the standard deviation and time correlation.

公开(公告)号：US12050119B2

公开(公告)日：2024-07-30

申请号：US16714983

申请日：2019-12-16

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Anand Dabak ,  Clive Bittlestone

IPC: G01F1/66 ,  G01F1/667 ,  G01F15/06 ,  G01F15/061 ,  H04Q9/00

CPC classification number: G01F1/66 ,  G01F1/667 ,  G01F15/061 ,  H04Q9/00 ,  H04Q2209/60

Abstract: A flow meter ultrasonically measures fluid velocity in a pipe and ultrasonically transmits fluid flow data along the pipe. An ultrasonic transducer used for fluid velocity measurement may optionally also be used for communication of flow data, and optionally, the ultrasonic frequency for fluid velocity measurement may be the same as the ultrasonic frequency for communication of flow data.

公开(公告)号：US11736144B2

公开(公告)日：2023-08-22

申请号：US17096886

申请日：2020-11-12

Applicant: Texas Instruments Incorporated

Inventor： Anand Dabak ,  Mahmoud Abdelmoneim Abdelmoneim Elgenedy ,  Timothy Mark Schmidl ,  Swaminathan Sankaran

IPC: H04B3/32 ,  H04L25/03

CPC classification number: H04B3/32 ,  H04L25/03057

Abstract: In described examples of a signal equalizer, a first filter stage is configured to perform adaptive equalization of crosstalk between a first signal component and a second signal component of a complex signal. A second filter stage is coupled serially to the first filter stage. The second equalizer stage is configured to perform separate adaptive equalization of the first signal component and separate adaptive equalization of the second signal component.

公开(公告)号：US20200153480A1

公开(公告)日：2020-05-14

申请号：US16744376

申请日：2020-01-16

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Badri N Varadarajan ,  Anand Dabak ,  II Han Kim

IPC: H04B3/54 ,  H04L29/08 ,  H04L1/00 ,  H04L29/06

Abstract: In a disclosed embodiment, a power line communication (PLC) transmitter includes a forward error correction (FEC) encoder that receives payload data and adds parity information to the data to create an encoded output, a fragmenter that receives the encoded output from the FEC encoder and segments the encoded output into a plurality of fragments, a fragment repetition encoder that receives the plurality of fragments from the fragmenter and copies each of the fragments a selected number of times, and an interleaver that receives the copies of the plurality of fragments from the fragment repetition encoder and interleaves the copies of the plurality of fragments for transmission on a power line.

公开(公告)号：US10508937B2

公开(公告)日：2019-12-17

申请号：US13860409

申请日：2013-04-10

Applicant: Texas Instruments Incorporated

Inventor： Anand Dabak ,  Clive Bittlestone

IPC: G01F1/66 ,  G01F15/06 ,  H04Q9/00

Abstract: A flow meter ultrasonically measures fluid velocity in a pipe and ultrasonically transmits fluid flow data along the pipe. An ultrasonic transducer used for fluid velocity measurement may optionally also be used for communication of flow data, and optionally, the ultrasonic frequency for fluid velocity measurement may be the same as the ultrasonic frequency for communication of flow data.

公开(公告)号：US10378938B2

公开(公告)日：2019-08-13

申请号：US14852005

申请日：2015-09-11

Applicant: Texas Instruments Incorporated

Inventor： Anand Dabak ,  Amardeep Sathyanarayana ,  Luis Fernando Reynoso ,  Venkataramanan Ramamurthy

IPC: H04B11/00 ,  G01F1/66 ,  G01F1/712

Abstract: A transducer system with a transducer and circuitry for applying a pulse train to excite the transducer. The circuitry for applying a pulse train selects a first set having a first number of pulses at a first frequency and a second set of pulses having a second number of pulses at a second frequency differing from the first frequency. At least one pulse from the first set is located in the pulse train between one or more of the pulses at the second frequency.

公开(公告)号：US20190199402A1

公开(公告)日：2019-06-27

申请号：US16200928

申请日：2018-11-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Badri N Varadarajan ,  Anand Dabak ,  II Han Kim

IPC: H04B3/54 ,  H04L29/06 ,  H04L1/00 ,  H04L29/08

CPC classification number: H04B3/54 ,  H04L1/0041 ,  H04L1/0071 ,  H04L69/22 ,  H04L69/323

Abstract: In a disclosed embodiment, a power line communication (PLC) transmitter includes a forward error correction (FEC) encoder that receives payload data and adds parity information to the data to create an encoded output, a fragmenter that receives the encoded output from the FEC encoder and segments the encoded output into a plurality of fragments, a fragment repetition encoder that receives the plurality of fragments from the fragmenter and copies each of the fragments a selected number of times, and an interleaver that receives the copies of the plurality of fragments from the fragment repetition encoder and interleaves the copies of the plurality of fragments for transmission on a power line.

公开(公告)号：US10006791B2

公开(公告)日：2018-06-26

申请号：US14862832

申请日：2015-09-23

Applicant: Texas Instruments Incorporated

Inventor： R Venkata Ramanan ,  Anand Dabak ,  Amardeep Sathyanarayana

IPC: G01F25/00 ,  G01F1/66

CPC classification number: G01F1/667 ,  G01F25/0007

Abstract: A method, system and apparatus is disclosed for auto-tuning a circuit associated with an upstream transducer (UPT) and a circuit associated with a downstream transducer (DNT) for reciprocal operation in an ultrasonic flowmeter. The method includes exchanging signals between the upstream transducer and the downstream transducer; comparing at least one of respective maximum amplitudes of an upstream signal and a downstream signal and respective center frequencies of a Fast Fourier Transform (FFT) of the upstream signal and the downstream signal; and responsive to determining that at least one of the respective maximum amplitudes and the respective center frequencies do not match, correcting the mismatch.

公开(公告)号：US20180159594A1

公开(公告)日：2018-06-07

申请号：US15796442

申请日：2017-10-27

Applicant: Texas Instruments Incorporated

Inventor： Badri N Varadarajan ,  Anand Dabak ,  II Han Kim

IPC: H04B3/54 ,  H04L1/00 ,  H04L29/08

CPC classification number: H04B3/54 ,  H04L1/0041 ,  H04L1/0071 ,  H04L69/22 ,  H04L69/323

Abstract: In a disclosed embodiment, a power line communication (PLC) transmitter includes a forward error correction (FEC) encoder that receives payload data and adds parity information to the data to create an encoded output, a fragmenter that receives the encoded output from the FEC encoder and segments the encoded output into a plurality of fragments, a fragment repetition encoder that receives the plurality of fragments from the fragmenter and copies each of the fragments a selected number of times, and an interleaver that receives the copies of the plurality of fragments from the fragment repetition encoder and interleaves the copies of the plurality of fragments for transmission on a power line.

公开(公告)号：USRE46774E1

公开(公告)日：2018-04-03

申请号：US14578322

申请日：2014-12-19

Applicant: Texas Instruments Incorporated

Inventor： Aris Papasakellariou ,  Timothy M. Schmidl ,  Eko N Onggosanusi ,  Anand Dabak

IPC: H04J11/00 ,  H04L5/00

CPC classification number: H04L1/06 ,  H04B7/0452 ,  H04B7/12 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0226

Abstract: A receiver in an OFDM based communication system is adapted to perform channel estimation using a received reference signal transmitted from at least one antenna The reference signal is substantially located into at least two OFDM symbols of a transmission time interval comprising of more than two OFDM symbols. A power level of said reference signal is divided into said non-consecutive OFDM symbols in said transmission time interval and adapted to use the reference signal located in a first OFDM symbol in succeeding transmission time intervals in addition to the reference symbols in a current transmission time interval and a preceding transmission time interval.