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公开(公告)号：US12273852B2
公开(公告)日：2025-04-08
申请号：US17537882
申请日：2021-11-30
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Anand Dabak , Marius Moe , Charles Sestok
Abstract: Using a phase interferometry method which utilizes both amplitude and phase allows the determination and estimation of multipath signals. To determine the location of an object, a signal that contains sufficient information to allow determination of both amplitude and phase, like a packet that includes a sinewave portion, is provided from a master device. A slave device measures the phase and amplitude of the received packet and returns this information to the master device. The slave device returns a packet to the master that contains a similar sinewave portion to allow the master device to determine the phase and amplitude of the received signals. Based on the two sets of amplitude and phase of the RF signals, the master device utilizes a fast Fourier transform or techniques like multiple signal classification to determine the indicated distance for each path and thus more accurately determines a location of the slave device.
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公开(公告)号：US11255708B2
公开(公告)日：2022-02-22
申请号：US17008156
申请日：2020-08-31
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Anand Dabak , Venkata Ramanan
Abstract: A method of calculating a time difference is disclosed. The method includes sampling a first ultrasonic signal (r21) to produce a first sampled signal (y1(i)) and sampling a second ultrasonic signal (r12) to produce a second sampled signal (y2(i)). A first time (LEAD_LAG) is determined between a time the first sampled signal crosses a threshold (θ1) and a time the second sampled signal crosses the threshold. The first sampled signal is cross correlated with the second sampled signal to produce a second time (SAMP_OFFSET). The time difference is calculated in response to the first and second times.
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公开(公告)号：US11005530B2
公开(公告)日：2021-05-11
申请号：US16744376
申请日：2020-01-16
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Badri N Varadarajan , Anand Dabak , Il Han Kim
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.
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公开(公告)号：US10541727B2
公开(公告)日：2020-01-21
申请号：US16200928
申请日：2018-11-27
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Badri N Varadarajan , Anand Dabak , Il Han Kim
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.
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公开(公告)号：US20180274957A1
公开(公告)日：2018-09-27
申请号：US15708553
申请日：2017-09-19
Applicant: Texas Instruments Incorporated
Inventor： Anand Dabak , Luis Reynoso Covarrubias , Srinath Ramaswamy , Srinivas Lingam
CPC classification number: G01F1/667 , G01F1/662 , G01F1/668 , G01F15/024 , H04B11/00
Abstract: Disclosed examples include methods and systems to measure fluid flow, including a transmit circuit to provide a transducer transmit signal based on a transmit pulse signal, a receive circuit to receive a transducer receive signal, an ADC to sample a receive signal from the receive circuit and provide a sampled signal, and a processing circuit that computes a transit time based on the sampled signal, and provides the transmit pulse signal including a first portion with a frequency in a first frequency band, and a second portion with a second frequency outside the first frequency band to mitigate undesired transducer vibration, where the second frequency is outside a transducer frequency bandwidth of the transducer.
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Patent Agency Ranking
公开(公告)号：US20170207820A1
公开(公告)日：2017-07-20
申请号：US15476587
申请日：2017-03-31
Applicant: Texas Instruments Incorporated
Inventor： Badri N Varadarajan , Anand Dabak , II Han Kim
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.
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7.发明申请Ultrasonic Transducer System and Method Using Selective Interleaved Excitation Pulse Frequency 审中-公开超声波传感器系统及使用选择性交错激励脉冲频率的方法公开(公告)号：US20160080093A1
公开(公告)日：2016-03-17
申请号：US14852005
申请日：2015-09-11
Applicant: Texas Instruments Incorporated
IPC: H04B11/00
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.
Abstract translation: 具有换能器和电路的换能器系统，用于施加脉冲串来激励换能器。 用于施加脉冲串的电路选择具有第一频率的第一脉冲数的第一组和具有与第一频率不同的第二频率的第二脉冲数的第二组脉冲。 来自第一组的至少一个脉冲位于第二频率的一个或多个脉冲之间的脉冲串中。
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公开(公告)号：US20150355001A1
公开(公告)日：2015-12-10
申请号：US14300303
申请日：2014-06-10
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Anand Dabak , Venkata Ramanan
Abstract: A method of calculating a time difference is disclosed. The method includes sampling a first ultrasonic signal (r21) to produce a first sampled signal (y1(i)) and sampling a second ultrasonic signal (r12) to produce a second sampled signal (y2(i)). A first time (LEAD_LAG) is determined between a time the first sampled signal crosses a threshold (θ1) and a time the second sampled signal crosses the threshold. The first sampled signal is cross correlated with the second sampled signal to produce a second time (SAMP_OFFSET). The time difference is calculated in response to the first and second times.
Abstract translation: 公开了一种计算时差的方法。 该方法包括对第一超声波信号（r21）采样以产生第一采样信号（y1（i）），并对第二超声波信号（r12）进行采样以产生第二采样信号（y2（i））。 在第一采样信号跨越阈值（＆amp; t; 1）的时间与第二采样信号越过阈值的时间之间确定第一时间（LEAD_LAG）。 第一采样信号与第二采样信号交叉相关以产生第二时间（SAMP_OFFSET）。 响应于第一次和第二次计算时间差。
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公开(公告)号：US20140303910A1
公开(公告)日：2014-10-09
申请号：US14156388
申请日：2014-01-15
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Anand Dabak , Venkata Ramanan
Abstract: A method of calculating a time difference is disclosed. The method includes receiving a first ultrasonic signal (r21) from a first transducer (UT1) and receiving a second ultrasonic signal (r12) from a second ultrasonic transducer (UT2). The first and second ultrasonic signals are sampled to produce respective first and second sampled ultrasonic signals (502). Points having a value greater than a first threshold are selected from the first and second sampled ultrasonic signals (510). A difference in travel time between the first and second ultrasonic signals is calculated (512) in response to the selected points.
Abstract translation: 公开了一种计算时差的方法。 该方法包括从第一换能器（UT1）接收第一超声波信号（r21）并从第二超声换能器（UT2）接收第二超声波信号（r12）。 第一和第二超声波信号被采样以产生相应的第一和第二采样超声波信号（502）。 从第一和第二采样超声波信号（510）中选择具有大于第一阈值的值的点。 响应于所选择的点计算第一和第二超声波信号之间的行进时间差异（512）。
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公开(公告)号：US20130294531A1
公开(公告)日：2013-11-07
申请号：US13659870
申请日：2012-10-24
Applicant: Texas Instruments Incorporated
Inventor： Ramanuja Vedantham , Anand Dabak , Tarkesh Pande
IPC: H04B3/54
CPC classification number: H04B3/54 , H04B3/546 , H04B2203/5408 , H04B2203/5433 , H04B2203/5445 , H04L5/14
Abstract: Systems and methods for enabling co-existence among power line communications (PLC) technologies are described. In some embodiments, a method performed by a PLC device, such as a PLC gateway, may include detecting a communication from foreign PLC device on a PLC network in response to a foreign preamble received by the PLC device, terminating transmissions to the PLC network for a network-specific co-existence Extended Interframe Space (cEIFS) time period in response to the foreign preamble, and resuming transmissions to the PLC network after expiration of the network-specific time period.
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