Radar detection in a wireless LAN
Granted: October 24, 2023
Patent Number:
11796627
Disclosed are methods and systems for a WLAN device operating on DFS channels to calibrate the PRI as well as delays between partial pulses of received radar pulses that are impaired due to channel and filtering effects. The calibrated PRI may approximate the PRI of the transmitted pulses. The calibrated delay between the partial pulses estimates the interval between two partial pulses that originally belong to the same transmitted pulse. Using the calibrated PRI and the calibrated delay…
Capacitive touch-sensing channel
Granted: October 24, 2023
Patent Number:
11799476
Technology directed to capacitive touch-sensing channels, including a capacitive-sensing converter based on a sigma-delta modulator, is described. One sigma-delta modulator includes a comparator, a first integrator coupled to receive an incoming signal from the input node and to provide a first output signal, a second integrator, coupled in parallel to the first integrator, to receive the incoming signal and to provide a second output signal, and switching circuitry. The switching…
Autonomous feedback for efficient allocation of wireless subcarriers
Granted: October 17, 2023
Patent Number:
11791929
Implementations disclosed describe systems and methods to optimize allocation of wireless subcarriers to station devices in wireless networks. In an example implementation, the disclosed techniques may include determining, by a station device in a wireless network, that a current set of wireless subcarriers, allocated by an access point device of the wireless network for the station device, is to be changed, generating, by the station device, a feedback information characterizing a…
Time synchronization in wireless networks
Granted: October 17, 2023
Patent Number:
11792755
Implementations disclosed describe numerous techniques and systems facilitating synchronous actions in wireless networks that have a central device (CD) and multiple peripheral devices (PDs) communicating wirelessly with the CD. The CD communicates one or more messages to the PDs and various PDs determine, using communicated messages, a time of a synchronous action to be performed by the PDs. The synchronous action includes an interaction of a respective PD with one or more associated…
Coexistence operation of wireless devices
Granted: October 10, 2023
Patent Number:
11785473
An apparatus is provided. The apparatus comprises a controller configured to operate in an access point (AP) mode. The apparatus also includes a processing device. The processing device is configured to transmit a signal to one or more stations (STAs) to prevent the one or more STAs from using a frequency band. The frequency band is shared by the one or more STAs and a radio. The processing device is also configured to detect that the frequency band is available for use by at least one…
High-distance directional proximity sensor
Granted: October 10, 2023
Patent Number:
11782517
Apparatuses and methods of high-distance directional proximity sensors are described. One apparatus includes at least three electrodes in a sensor layer, an electrode in a shield layer, and an insulator located between the layers. A processing device is configured to scan the at least three electrodes over a period of time to obtain a digital signal for each of the at least three electrodes while driving a shield signal on the electrode of the shield layer. The processing device detects…
Two stage user customizable wake word detection
Granted: October 10, 2023
Patent Number:
11783818
Described herein are devices, methods, and systems for detecting a phrase from uttered speech. A processing device may determine a first model for phrase recognition based on a likelihood ratio using a set of training utterances. The set of utterances may be analyzed by the first model to determine a second model, the second model comprising a training state sequence for each of the set of training utterances, and wherein each training state sequence indicates a likely state for each…
Devices, systems, and methods for predicting communication channel conditions
Granted: October 3, 2023
Patent Number:
11778593
A method includes tracking a geographical location of a vehicle, accessing channel map data associating a channel condition value for each of a set of wireless channels with each of a set of geographical locations during a plurality of time periods of day, and based on the channel map data, the tracked geographical location of the vehicle, and a time of day associated with the vehicle, selecting one of the set of wireless channels for communication.
Media access control (MAC) address privacy handling
Granted: September 26, 2023
Patent Number:
11770699
Implementations disclosed describe techniques to allow wireless devices to initially connect with randomized MAC addresses and send an encrypted permanent MAC for differentiated services. In one method, a first wireless device connects to an access point (AP) using a randomized MAC address. The first wireless device receives a request for a permanent MAC address from the AP. The first wireless device determines whether to send the permanent MAC address. Responsive to determining to send…
Programmable chopping architecture to reduce offset in an analog front end
Granted: September 26, 2023
Patent Number:
11770109
An integrated circuit can include an amplifier coupled to receive an analog input signal, an anti-aliasing filter (AAF) coupled to an output of the amplifier, a buffer circuit coupled to an output of the AAF, a sigma-delta modulator configured to generate a digital data stream in response to an output of the buffer, and a plurality of chopping circuits nested within one another, including a first pair of chopping circuits having at least the amplifier disposed therebetween and configured…
Low-noise, high-resolution ratiometric capacitive baseliner
Granted: September 26, 2023
Patent Number:
11768564
An apparatus includes a global baseliner circuit coupled with sensing channels of a sensing device. The global baseliner circuit has a signal generator to generate a rectified sinusoidal signal and a square wave having a frequency matching that of an excitation sinusoidal signal, and is to use the square wave to modulate the excitation sinusoidal signal provided at an output of the global baseliner circuit. A channel baseliner circuit is coupled between the global baseliner circuit and a…
Floating ground architectures in USB type-C controllers for fault detection
Granted: September 26, 2023
Patent Number:
11768253
A Universal Serial Bus Type-C (USB-C) controller with a floating ground architecture for fault detection is described. A USB-C controller includes a floating ground circuit and a fault detection circuit coupled to a power converter. The floating ground circuit provides a floating ground voltage based on a supply voltage of the power converter. The fault detection circuit includes a comparator with power rails coupled to the supply voltage and the floating ground voltage. The fault…
Sigma-delta modulator for high-resolution control of ring oscillator in digital phase-locked loop
Granted: September 19, 2023
Patent Number:
11764802
A digitally-controlled oscillator (DCO) circuit includes a digital-to-analog converter (DAC) to generate a first current based on most significant bits of a multi-bit code received from a time-to-digital converter (TDC) of a digital phase-locked loop (PLL). The DCO circuit further includes a sigma-delta modulator (SDM) to modulate least significant bits of the multi-bit code into a set of digital bits based on a first frequency of a feedback clock of the DPLL. The set of digital bits is…
Method of forming high-voltage transistor with thin gate poly
Granted: June 27, 2023
Patent Number:
11690227
A semiconductor device and method of fabricating the same are disclosed. The method includes depositing a polysilicon gate layer over a gate dielectric formed over a surface of a substrate in a peripheral region, forming a dielectric layer over the polysilicon gate layer and depositing a height-enhancing (HE) film over the dielectric layer. The HE film, the dielectric layer, the polysilicon gate layer and the gate dielectric are then patterned for a high-voltage Field Effect Transistor…
Systems, methods, and devices for supplemental scanning in wireless networks
Granted: June 13, 2023
Patent Number:
11678257
Systems, methods, and devices implement supplemental scanning for establishing network connections in wireless networks. Methods include sending a request to a wireless device, the request including a plurality of scanning parameters, the plurality of scanning parameters identifying a plurality of requested wireless network parameters. Methods also include receiving a reply from the wireless device, the reply including a result of one or more scanning operations performed based on the…
Devices, systems and methods for connecting and authenticating local devices to common gateway device
Granted: June 13, 2023
Patent Number:
11678183
Devices, systems and methods use a first communication interface to connect with a local device via a first protocol and use a second communication interface to connect with a server via a second protocol. Embodiments relay secure communications between the local device and the server for authentication of the at least one local device by the server and responsive to authentication of the local device by the server, transmit information for storage in a secure memory of the authenticated…
Independently clocking digital loop filter by time-to-digital converter in digital phase-locked loop
Granted: June 13, 2023
Patent Number:
11677404
A time-to-digital converter (TDC) circuit includes phase error calculation circuitry to: determine phase error values based on a time difference between a input reference clock and a feedback clock of a digital phase-locked loop (DPLL) circuit, the input reference clock and the feedback clock being unsynchronized; and provide the phase error values to a digital loop filter (DLF) of the DPLL circuit. The TDC circuit further includes clock generation circuitry to: generate a filter clock…
Implementation of traffic coexistence for collocated transceivers including Bluetooth transceivers
Granted: June 6, 2023
Patent Number:
11671918
Systems, methods, and devices enable coexistence of traffic for collocated transceivers. Methods may include generating a target-wake-time (TWT) agreement based on availability of a first transceiver and a plurality of wireless devices. Methods also include generating a medium access schedule for the first transceiver using a first transmission protocol based on transmission events determined based on a second transmission protocol of a second transceiver, the second transceiver being…
Control logic performance optimizations for universal serial bus power delivery controller
Granted: June 6, 2023
Patent Number:
11671013
An IC controller for USB Type-C device includes an error amplifier (EA), which includes an EA output coupled to a PWM comparator of a buck-boost converter; a first transconductance amplifier to adjust a current at the EA output, the first transconductance amplifier operating in a constant voltage mode; and a second transconductance amplifier to adjust the current at the EA output, the second transconductance amplifier operating in a constant current mode. A first set of programmable…
Detecting the angle of a touch screen mounted passive dial
Granted: June 6, 2023
Patent Number:
11669191
A touch screen display and corresponding devices and methods are disclosed, the touch screen display comprising a touchscreen having a plurality of capacitive sensors and a passive dial having one or more conductive elements, the passive dial mounted within an active area of the touchscreen such that the one or more conductive elements are proximate to the face of the touchscreen and move in conjunction with a rotation of the passive dial. The touch screen display may further include a…
