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公开(公告)号：US11743283B2
公开(公告)日：2023-08-29
申请号：US17113521
申请日：2020-12-07
Applicant: Texas Instruments Incorporated
Inventor： Tomas Motos , Khanh Tuan Le
CPC classification number: H04L63/1433 , G07C9/00309 , H04L63/08 , H04L63/1416 , H04L63/1441 , H04L63/1466 , H04L67/12 , H04W12/122 , H04W56/001 , H04L5/16 , H04L7/033 , H04W84/20
Abstract: A method of relay-attack resistant communications in a wireless communications system that includes a master wireless device (Master) sending a synchronization signal to a slave wireless device (Slave). The synchronization signal includes timing information including a common time reference and a timeslot duration for interlocking Master communication timeslots for Master and Slave communication timeslots so that an alternating TX and RX role pattern is provided. The Master analyzes Slave packet data received from the Slave to identify overlaps of a transmission from the Master and the slave packet data, and in a case of detecting overlap, suspends communications from Master to Slave to prevent a relay-attack.
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公开(公告)号：US11165555B2
公开(公告)日：2021-11-02
申请号：US17028328
申请日：2020-09-22
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Wenxun Qiu , Tomas Motos , Marius Moe
IPC: H04L7/04 , H04L27/34 , H04L27/38 , H04B1/7073
Abstract: A technique of separating a sequence of modulation shift keying (MSK) symbols into a first portion and a second portion and separately comparing the first portion of the sequence of MSK symbols and the second portion of the sequence of MSK symbols against a first portion of a reference sequence of MSK symbols and a second portion of the reference sequence of MSK symbols allows a low complexity detection of a start field delimiter in a wireless communication packet.
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公开(公告)号：US20190187262A1
公开(公告)日：2019-06-20
申请号：US15845290
申请日：2017-12-18
Applicant: Texas Instruments Incorporated
Inventor： Marius Moe , Espen Wium , Tomas Motos , Hagen Clemens Graf
IPC: G01S11/08
CPC classification number: G01S11/08
Abstract: Electronic devices and methods to provide wireless ranging are shown. A first electronic device includes a memory containing stored instructions that can perform a method for determining a distance between the first electronic device and a second electronic device. For each frequency in a selected set of frequencies, the method sets the transceiver to the respective frequency, sends a first tone having the frequency and a first phase to the second electronic device and receives a second tone having the first frequency and a second phase. For each selected frequency, the first electronic device determines the phase difference between the second tone and the controllable oscillator, receives a phase difference from the second electronic device, and calculates a phase delay for the frequency. The first electronic device calculates a phase delay difference for pairs of the frequencies; and determines the distance using these phase delay differences.
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公开(公告)号：US12143416B2
公开(公告)日：2024-11-12
申请号：US18352504
申请日：2023-07-14
Applicant: Texas Instruments Incorporated
Inventor： Tomas Motos , Khanh Tuan Le
Abstract: A method of relay-attack resistant communications in a wireless communications system that includes a master wireless device (Master) sending a synchronization signal to a slave wireless device (Slave). The synchronization signal includes timing information including a common time reference and a timeslot duration for interlocking Master communication timeslots for Master and Slave communication timeslots so that an alternating TX and RX role pattern is provided. The Master analyzes Slave packet data received from the Slave to identify overlaps of a transmission from the Master and the slave packet data, and in a case of detecting overlap, suspends communications from Master to Slave to prevent a relay-attack.
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公开(公告)号：US11863992B2
公开(公告)日：2024-01-02
申请号：US17308761
申请日：2021-05-05
Applicant: Texas Instruments Incorporated
Inventor： Tomas Motos
CPC classification number: H04W12/50 , H04L9/0618 , H04W4/80 , H04W56/001 , H04W84/12
Abstract: Sequences to synchronize devices and related methods are disclosed herein including an access address generator to cryptographically generate a first bit sequence, an access address selector to read a first portion of the first bit sequence and read a second portion of the first bit sequence, the second portion different than the first portion, an access address analyzer to identify a first access address from a first section of the first portion based on a first criteria, the first criteria a function of a first autocorrelation function and identify a second access address from a second section of the second portion based on a second criteria, the second criteria a function of a second autocorrelation function.
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Patent Agency Ranking
公开(公告)号：US11736269B2
公开(公告)日：2023-08-22
申请号：US17488364
申请日：2021-09-29
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Wenxun Qiu , Tomas Motos , Marius Moe
IPC: H04L7/04 , H04L27/34 , H04L27/38 , H04B1/7073
CPC classification number: H04L7/042 , H04B1/70735 , H04L27/3405 , H04L27/3455 , H04L27/3836 , H04B2201/7073 , H04L2212/00
Abstract: A technique of separating a sequence of modulation shift keying (MSK) symbols into a first portion and a second portion and separately comparing the first portion of the sequence of MSK symbols and the second portion of the sequence of MSK symbols against a first portion of a reference sequence of MSK symbols and a second portion of the reference sequence of MSK symbols allows a low complexity detection of a start field delimiter in a wireless communication packet.
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公开(公告)号：US11709276B2
公开(公告)日：2023-07-25
申请号：US17241938
申请日：2021-04-27
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Tomas Motos
CPC classification number: G01S19/256 , G01S19/35 , H04W4/80
Abstract: A circuit includes a first wireless radio frequency (RF) transceiver and a time-of-flight estimator included with or coupled to the first wireless RF transceiver. The time-of-flight estimator estimates a time-of-flight between the first wireless RF transceiver and a second wireless RF transceiver using: a first interval value that indicates an amount of time between when the second wireless RF transceiver received the message and when the second wireless RF transceiver transmitted the response; a first error value that indicates an offset between when the second wireless RF transceiver sampled the message and a target sampling point for the message; a second interval value that indicates an amount of time between when the TX chain sent the message and when the RX chain received the response; and a second error value that indicates an offset between when the RX chain sampled the response and a target sampling point for the response.
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公开(公告)号：US20230068613A1
公开(公告)日：2023-03-02
申请号：US17463297
申请日：2021-08-31
Applicant: Texas Instruments Incorporated
Inventor： Tomas Motos , Espen Wium
Abstract: An example apparatus includes target signal generator circuitry to generate a target signal having a first center frequency and a bandwidth. The example apparatus additionally includes companion signal generator circuitry to generate a companion signal having a second center frequency that is less than (a) the first center frequency adjusted by a first threshold and greater than (b) the first center frequency adjusted by a second threshold, the first threshold being a first multiple of the bandwidth, the second threshold being a second multiple of the bandwidth, the first multiple different than the second multiple. In some examples, the example apparatus includes adder circuitry to combine the target signal and the companion signal to form a composite signal. Additionally, the example apparatus includes transmitter circuitry to transmit the composite signal to a target device.
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公开(公告)号：US20220365201A1
公开(公告)日：2022-11-17
申请号：US17869865
申请日：2022-07-21
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Tomas Motos , Espen Wium , Trond Meckelborg Rognerud , Aslak Ringvoll Normann , Oskar Gustaf Fredrik Von Heideken , Reidar Myhr
Abstract: Techniques related to measuring a time-of-flight (ToF), comprising switching a first measuring station to a main operating mode, transmitting, by the first measuring station, a first ToF packet to a remote device, switching the first measuring station to a receive mode to receive a first ToF response packet from the remote device, receiving, by the first measuring station, the first ToF response packet, determining, a time interval between transmitting of the first ToF packet and receiving the first ToF response packet, receiving a plurality of time intervals from one or more other measuring stations, determining a ToF measurement based on the first time interval and the plurality of time intervals, switching the first measuring station to a secondary operating mode, and transmitting to a second measuring station, an indication to switch to the main operating mode.
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公开(公告)号：US10432439B2
公开(公告)日：2019-10-01
申请号：US15858771
申请日：2017-12-29
Applicant: Texas Instruments Incorporated
Inventor： Wenxun Qiu , Tomas Motos
IPC: H04L27/20 , H04L27/00 , H04L1/00 , H04B1/7097
Abstract: A wireless transmitter for transmitting bits to a wireless receiver. The wireless transmitter comprises: (i) circuitry for generating binary data bits; and (ii) circuitry for providing a first spreading sequence for a first bit in the binary data bits and for providing a second spreading sequence for a second bit in the binary data bits, wherein the second bit is complementary to the first bit. Each spreading sequence consists of an integer number N of bits, and the circuitry for providing provides a same bit value in an integer number M of bit positions in the first and second spreading sequences, where M
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