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公开(公告)号：US20190207792A1
公开(公告)日：2019-07-04
申请号：US15858771
申请日：2017-12-29
Applicant: Texas Instruments Incorporated
Inventor： Wenxun Qiu , Tomas Motos
IPC: H04L27/20 , H04L27/00 , H04B1/7097 , H04L1/00
CPC classification number: H04L27/2014 , H04B1/7097 , H04B2201/709709 , H04L1/0071 , H04L27/0008
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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公开(公告)号：US12140662B2
公开(公告)日：2024-11-12
申请号：US18452087
申请日：2023-08-18
Applicant: Texas Instruments Incorporated
Inventor： Tomas Motos , Espen Wium
Abstract: Systems and methods of measuring distance between two wireless devices by combining phase shift and time-of-flight measurements. A first wireless devices sends a first packet to the second wireless device. After receiving the first packet, the second wireless device sending to the first wireless device a second packet. After sending the second packet, the second wireless device sends a first continuous wave signal to the first wireless device. After receiving the first continuous wave signal, the first wireless device sends to the second wireless device a second continuous wave signal. The first wireless device then calculates a time-of-flight measurement based on a time between the first wireless device sending the first packet and receiving the second packet, and calculates a second measurement based on a phase shift of the first continuous wave signal and the second continuous wave signal, and combines the two measurements.
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公开(公告)号：US12061274B2
公开(公告)日：2024-08-13
申请号：US18324276
申请日：2023-05-26
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：US20240121614A1
公开(公告)日：2024-04-11
申请号：US18529105
申请日：2023-12-05
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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公开(公告)号：US11774577B2
公开(公告)日：2023-10-03
申请号：US17844113
申请日：2022-06-20
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Tomas Motos , Espen Wium
CPC classification number: G01S13/84 , B60R25/245
Abstract: Systems and methods of measuring distance between two wireless devices by combining phase shift and time-of-flight measurements. A first wireless devices sends a first packet to the second wireless device. After receiving the first packet, the second wireless device sending to the first wireless device a second packet. After sending the second packet, the second wireless device sends a first continuous wave signal to the first wireless device. After receiving the first continuous wave signal, the first wireless device sends to the second wireless device a second continuous wave signal. The first wireless device then calculates a time-of-flight measurement based on a time between the first wireless device sending the first packet and receiving the second packet, and calculates a second measurement based on a phase shift of the first continuous wave signal and the second continuous wave signal, and combines the two measurements.
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Patent Agency Ranking
公开(公告)号：US20220369113A1
公开(公告)日：2022-11-17
申请号：US17308761
申请日：2021-05-05
Applicant: Texas Instruments Incorporated
Inventor： Tomas Motos
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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公开(公告)号：US10897477B2
公开(公告)日：2021-01-19
申请号：US15200896
申请日：2016-07-01
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：US20250119171A1
公开(公告)日：2025-04-10
申请号：US18650605
申请日：2024-04-30
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Danielle Griffith , Tomas Motos , Marius Moe
Abstract: A circuit includes a receiver configured to couple to an antenna, configured to have a wakeup mode and an active mode, and to transition from the wakeup mode to the active mode in response to a wakeup signal received through the antenna. The receiver includes an impedance matching circuit coupled with the antenna, a low-noise amplifier coupled with the impedance matching circuit, a mixer coupled with the low-noise amplifier, a radio-frequency reference clock generator coupled with the mixer, a low-pass filter coupled with the mixer, an analog-to digital-converter coupled with the low-pass filter, and a control circuit configured to transition the receiver from the wakeup mode to the active mode in response to the wakeup signal. The low-noise amplifier, the mixer, the radio frequency reference clock generator, and the analog-to-digital converter are configured to be duty-cycled between a sleep state and an active wakeup receive state during the wakeup mode.
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公开(公告)号：US20250110232A1
公开(公告)日：2025-04-03
申请号：US18980006
申请日：2024-12-13
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：US20250016566A1
公开(公告)日：2025-01-09
申请号：US18749237
申请日：2024-06-20
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Tomas Motos
IPC: H04W12/12 , H04B17/336 , H04L9/40 , H04L43/0864
Abstract: In an embodiment, a method includes receiving, by a first device, a first signal, determining, by the first device, a detection metric indicative of a deviation between the first signal and a reference signal, and performing, by the first device, an action based on the detection metric and a detection threshold level.
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