公开(公告)号：US11889420B2

公开(公告)日：2024-01-30

申请号：US17501162

申请日：2021-10-14

申请人： Wiliot, Ltd.

发明人： Alon Yehezkely ,  Sagi Kupferman ,  David Lipshitz

IPC分类号： H04W52/02 ,  H04W72/0453 ,  H04W4/80

CPC分类号： H04W52/0229 ,  H04W4/80 ,  H04W72/0453

摘要： A system and method for waking up a low-power wireless device is provided. The method includes: initializing a wakeup sensitivity to minimum of a wakeup circuit of the wireless device; searching for at least one beacon by the wakeup circuit; increasing the wakeup sensitivity of the wakeup circuit when the at least one beacon is not found; and setting the wakeup sensitivity to a value at which the least one beacon is received.

公开(公告)号：US11885661B2

公开(公告)日：2024-01-30

申请号：US17171795

申请日：2021-02-09

申请人： Wiliot, Ltd.

发明人： Ido Zelman ,  Matan Epstein ,  Shay Moshe ,  Tsvika Rabkin ,  David Lipshitz ,  Tal Szpruch ,  Dotan Ziv ,  Alon Yehezkely

IPC分类号： G01F23/28 ,  G01F23/284 ,  G06N20/00 ,  G16H20/17 ,  G01F23/296 ,  G01N29/34 ,  G01N29/44 ,  G01N29/46 ,  G06F18/21

CPC分类号： G01F23/284 ,  G01F23/296 ,  G01N29/348 ,  G01N29/4454 ,  G01N29/46 ,  G06F18/217 ,  G06N20/00 ,  G16H20/17 ,  G06F2218/08 ,  G06F2218/12

摘要： A system and method for detecting material type using low-energy sensing are disclosed. The method includes receiving frequency words from a tag attached to a container containing material, wherein the tag provides a low-energy sensing configured to transmit the frequency words; extracting at least a first data feature from the received frequency words, wherein the first data feature changes in response to a type of material in the container; classifying the extracted data feature to label a type of the material in the container; and sending a notification indicating the type of material in the container.

公开(公告)号：US11303158B2

公开(公告)日：2022-04-12

申请号：US16876715

申请日：2020-05-18

申请人： Wiliot, Ltd.

发明人： Alon Yehezkely ,  Ido Yogev

IPC分类号： H02J50/20 ,  G01R19/165 ,  H02J50/80

摘要： A power management circuit is provided. The power management circuit includes a plurality of detectors, wherein each of the plurality of detectors are configured with a different reference threshold voltage level; and a controller coupled to the plurality of detectors and configured to activate a subset of the plurality of detectors at any given time, wherein a subset of the plurality of detectors, when activated, are configured to provide a multi-level voltage level indication on a state of a voltage supply.

公开(公告)号：US11281956B2

公开(公告)日：2022-03-22

申请号：US16995205

申请日：2020-08-17

申请人： Wiliot, LTD.

发明人： Sagi Kupferman ,  Alon Yehezkely

IPC分类号： G06K19/07 ,  H03F3/45

摘要： A low energy transmitter is provided. The transmitter includes an antenna circuit wherein the antenna circuit has an antenna positive node interface (Vop) and an antenna negative node interface (Von); a reference voltage source that supplies a reference voltage to the antenna circuit; and a common mode feedback (CMFB) circuit coupled to the antenna circuit that receives from the antenna circuit inputs from the Vop and the Von and supplies at least one signal to the antenna circuit.

公开(公告)号：US10769511B2

公开(公告)日：2020-09-08

申请号：US16238976

申请日：2019-01-03

申请人： Wiliot, LTD.

发明人： Sagi Kupferman ,  Alon Yehezkely

IPC分类号： G06K19/07 ,  H03F3/45

摘要： Disclosed include methods and devices for enabling a battery free Bluetooth low energy communication. Some embodiments include a transmitter and a reference voltage generator supplying a voltage to an oscillator circuit. Further, some embodiments include an oscillator circuit including two pairs of semiconductor devices, wherein each pair of a semiconductor device includes a device with a gate node coupled to an antenna positive node interface (Vop) via a capacitor and a drain connected to an antenna negative node interface (Von) and a device with a gate node coupled to an antenna positive node interface (Von) via a capacitor and a drain connected to an antenna negative node interface (Vop). Additionally, some embodiments include an oscillator circuit connected to a common mode feedback circuit.

公开(公告)号：US11985595B2

公开(公告)日：2024-05-14

申请号：US17501158

申请日：2021-10-14

申请人： Wiliot, Ltd.

发明人： Alon Yehezkely ,  Sagi Kupferman ,  Ido Yogev

IPC分类号： H04W52/02 ,  H04W4/23 ,  H04W4/80

CPC分类号： H04W52/0229 ,  H04W4/23 ,  H04W4/80 ,  H04W52/028

摘要： A wakeup circuit operable in a low-power wireless device is provided. The wakeup circuit includes at least one radio frequency rectifier configured to output a rising transient voltage in response to existence of a RF signal received at an antenna of the wireless device; and a detector configured to output a wakeup signal when an input voltage level of the detector is higher than a reference voltage signal, wherein a signal output by the detector upon detection of a wakeup signal causes resetting each of the at least one rectifier upon detection of the wakeup signal; and wherein the wakeup circuit is coupled to an antenna interface of the wireless device.

公开(公告)号：US11609128B2

公开(公告)日：2023-03-21

申请号：US16708831

申请日：2019-12-10

申请人： Wiliot, Ltd.

发明人： Alon Yehezkely ,  Yaron Elboim

IPC分类号： G01K7/32 ,  G01K15/00 ,  G01K7/34 ,  H03B5/12

摘要： An LC oscillator is provided. The LC oscillator includes a single layer inductor disposed within a single layer inlay, wherein the single layer inductor is configured in a spiral pattern within the layer of the inlay, wherein an integrated circuit is mounted on the single layer inlay; and a capacitor included in the integrated circuit, wherein the capacitor is connected to the single layer inductor.

公开(公告)号：US11342924B2

公开(公告)日：2022-05-24

申请号：US17222064

申请日：2021-04-05

申请人： Wiliot, Ltd.

发明人： Alon Yehezkely ,  Nir Shapira

IPC分类号： H03L7/099 ,  H04B1/04 ,  G06F1/3206 ,  H02J50/80 ,  G01B7/14 ,  H02J50/20 ,  H02J50/00 ,  G01B7/02 ,  G06F21/44 ,  H01Q1/38 ,  G01V3/08

摘要： A battery-less Internet of things (IoT) tag integrated with a proximity sensor is disclosed. The battery-less IoT tag includes: a transmit antenna designed to have an inductive element; an integrated circuit having a capacitive element; and an energy harvester coupled to a capacitor, wherein the capacitor is an on-die capacitor and the energy harvester is configured to harvest energy from ambient signals, wherein the inductive element and the capacitive element form the proximity sensor oscillating at a local oscillator (LO) frequency, and wherein a frequency offset from the LO frequency is indicative of a detection of a nearby object.

公开(公告)号：US11342258B2

公开(公告)日：2022-05-24

申请号：US16523015

申请日：2019-07-26

申请人： Wiliot, Ltd.

发明人： Yaron Elboim ,  Alon Yehezkely

IPC分类号： H01L23/50 ,  H01L23/64 ,  H02M3/07 ,  H02J50/80 ,  G06F1/26 ,  G01R19/165 ,  H02J50/05 ,  H02N2/18

摘要： According to the disclosed embodiments, an on-die capacitor utilized in energy-harvest based circuits is provided. In the disclosed design, the harvester is coupled to the on-die capacitor, thus there is no need to provide power interfaces and semi-conductor devices external to the IC. The disclosed design of the on-die capacitor would reduce the overall size and cost of the IC.

公开(公告)号：US10886929B2

公开(公告)日：2021-01-05

申请号：US15994388

申请日：2018-05-31

申请人： Wiliot, LTD.

发明人： Alon Yehezkely

IPC分类号： H03L7/099 ,  H03L7/08 ,  H03B28/00 ,  H03L7/181

摘要： Oscillator calibration circuits and wireless transmitters including oscillator calibration circuits. An oscillator calibration circuit includes a first frequency locking circuit (FLC) coupled to a first oscillator, wherein the first FLC calibrates the frequency of the first oscillator using an over-the-air reference signal, wherein the first FLC calibrates the first oscillator prior to a data transmission session and remains free running during the data transmission session.