Coexistence operation of wireless devices
Granted: October 26, 2021
Patent Number:
11159948
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…
Devices, systems and methods for connecting and authenticating local devices to common gateway device
Granted: October 19, 2021
Patent Number:
11153754
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…
Dual advanced audio distribution profile (A2DP) sink
Granted: October 19, 2021
Patent Number:
11153701
Wireless communication schemes and techniques are described, wherein a secondary device is configured to eavesdrop information communicated between a source and a primary device. Secondary device transmits a NACK signal to jam ACK signals from the primary device to the audio source, forcing a retransmit of audio information from the source to the primary, and available over an eavesdropping link between the secondary device and the source.
Generating and analyzing network profile data
Granted: October 19, 2021
Patent Number:
11153343
A device may generate network profile data indicating a set of network parameters detected by the device. The device may encrypt the network profile data and may transmit the encrypted network profile data to a network device, such as a router, or a server. The router or server may analyze the encrypted network profile data to determine if the device is secure. The router of server may perform one or more security measures if the device is not secure.
Devices, systems and methods for low latency data transmission in wireless network
Granted: October 5, 2021
Patent Number:
11140688
Embodiments can include a method in which a transmission duration for data frames to a plurality of different receiving devices is determined by a transmitting device. The transmission duration can include at least interframe spacings that separate the data frames from one another. The transmitting device can transmit a control message over a medium to reserve the medium for the transmission duration. The data frames can then be sequentially transmitted by the transmitting device to the…
Accurate feed-forward sensing in flyback-transformer based secondary controller
Granted: October 5, 2021
Patent Number:
11139743
An AC-DC converter with synchronous rectifier (SR) architecture and method for operating the same are described. Generally, a secondary side integrated circuit (IC) controller of the AC-DC converter includes a SR-SNS pin, a VBUS_IN pin, a first voltage-to-current converter, a sample-and-hold (S/H) circuit, a second voltage-to-current converter, and a signal generation circuit. The first voltage-to-current converter is coupled to remove a component of the output bus voltage sensed on the…
Guided placement of a wireless device for optimum performance
Granted: September 28, 2021
Patent Number:
11134391
Techniques for guided placement of a wireless device are described herein. In an example embodiment, a wi-fi wireless device comprises a radio frequency (RF) transceiver coupled to a baseband processor. The RF transceiver is configured to receive an RF signal transmitted over a wireless channel and to convert the RF signal to a modulated digital signal. The baseband processor is configured to receive the modulated digital signal from the RF transceiver, extract a wireless packet from the…
Startup regulator using voltage buffer to stabilize power supply voltage
Granted: September 28, 2021
Patent Number:
11133740
A system includes a transformer having an auxiliary coil to provide a flyback voltage to a primary side of an alternating current to direct current (AC-DC) converter. A primary side controller includes an auxiliary pin coupled to the transformer and to an external capacitor, the auxiliary pin to receive the flyback voltage after startup. a junction gate field-effect transistor (JFET) coupled to a supply voltage. A first FET is coupled in series between the JFET and the auxiliary pin, the…
Spatial-frequency-based capacitive motion sensor and method of using the same
Granted: September 21, 2021
Patent Number:
11126310
A spatial frequency based capacitive motion system and method of operating the same are disclosed. In one embodiment, the system includes an array of sense cells to sense capacitance variations induced by a detected surface in proximity to the array. The system further includes processing circuitry including one or more differential detectors and a processor to process output signals from the one or more differential detectors to measure displacement of the detected surface in a…
Accurate valley detection for secondary controlled flyback converter
Granted: September 14, 2021
Patent Number:
11121635
An AC-DC converter with synchronous rectifier (SR) architecture and method for operating the same are described. Generally, a secondary side IC controller of the AC-DC converter includes a SR-SNS pin coupled to a peak-detector block, a zero-crossing block, and a calibration block. The calibration block is configured to: measure a loop turn-around delay (Tloop), a time (Tpkpk) between two successive peak voltages detected on the SR-SNS pin, and a time (Tzpk) from when the voltage sensed…
Detecting the angle of a touch screen mounted passive dial
Granted: September 14, 2021
Patent Number:
11119602
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…
Dynamic power throttling based on system conditions in USB Type-C power delivery (USB-C/PD) ecosystem
Granted: September 14, 2021
Patent Number:
11119548
Technology to dynamically throttle power in a power delivery system is described. In one embodiment, a power delivery system includes a controller associated with a port to supply power. The controller manages a power budget available to the port based on a current state of one or more system parameters. The power budget available to the port can be throttled when the power delivery system operates under stress conditions and adjusted when the power delivery system is no longer operating…
Data-based pre-distortion for nonlinear power amplifier
Granted: September 7, 2021
Patent Number:
11115068
A system for data-based pre-distortion for a nonlinear power amplifier includes a digital pre-distortion (DPD) component, including a DPD processor and a DPD calibration engine, where the DPD processor applies a set of DPD coefficients to a digital baseband data signal, to generate a pre-distorted digital baseband data signal for conversion to a radio frequency (RF) signal and amplification by a nonlinear power amplifier (PA) to generate an RF output signal, where the DPD calibration…
Secondary-controlled active clamp implementation for improved efficiency
Granted: September 7, 2021
Patent Number:
11114945
Controlling an active clamp field effect transistor (FET) in a secondary-controlled active clamp converter is described. In one embodiment, an apparatus includes a primary-side FET coupled to a transformer, a secondary-side FET coupled to the transformer, and an active clamp FET disposed on a primary side of the transformer. A secondary-side controller is configured to control the active clamp FET across a galvanic isolation barrier.
Multiphase fingerprint sensor layout and construction
Granted: September 7, 2021
Patent Number:
11113497
A capacitive fingerprint sensor includes a set of capacitive sensor electrodes in a sensing area. The set of capacitive sensor electrodes includes a set of transmit (Tx) sensor electrodes, a set of receive (Rx) sensor electrodes, and a set of compensation electrodes. The fingerprint sensor also includes a multiphase capacitance sensor that is configured to perform a sensing scan of the capacitive sensor electrodes by applying a first Tx signal to a first subset of the Tx sensor…
Methods, systems and devices for providing differentiated quality of service for wireless communication devices
Granted: August 31, 2021
Patent Number:
11109394
A method can include, in an access point (AP) configured to control data transfers for associated stations (STAs) in time intervals, storing a unique identifier and quality-of-service (QoS) requirement for each STA of a first set in a nonvolatile memory of the AP. In response to a STA associating with the AP, if the associating STA is in the first set, allocating time for the STA in the time intervals to meet the QoS requirement of the STA without receiving transmitted QoS data from the…
Variable read latency on a serial memory bus
Granted: August 31, 2021
Patent Number:
11106604
Example apparatus, systems, and methods receive a request for data associated with an address and responsively access a memory array to obtain the data. Embodiments transition a bus from a first state to a second state and after the transitioning of the bus, drive the data onto the bus.
Combined analog architecture and functionality in a mixed-signal array
Granted: August 31, 2021
Patent Number:
11105851
A microcontroller comprises a plurality of digital peripheral blocks and a direct memory access (DMA) controller coupled thereto. The plurality of digital peripheral blocks includes a digital peripheral block that is configured to issue a DMA request. Upon receipt of the DMA request, the DMA controller is configured to retrieve configuration information and to write the configuration information to a configuration register associated with a circuit element of the microcontroller.
Dual integrated gate-driver with reverse current fault protection for USB Type-C and USB power delivery
Granted: August 24, 2021
Patent Number:
11100034
A dual-integrated gate-driver with reverse current protection (RCP) fault protection is described. A Universal Serial Bus Type-C (USB-C) controller includes a first terminal, a second terminal, and a dual-gate driver. The dual-gate driver drives a first power field effect transistor (FET) coupled to the first terminal and a second power FET coupled to the second terminal. The first power FET and the second power FET are connected in series between a voltage bus (VBUS_C) terminal of a USB…
Programmable gate driver control in USB power delivery
Granted: August 24, 2021
Patent Number:
11101673
Techniques for control of power switches in a USB Power Delivery (USB-PD) system are described herein. In an example embodiment, an integrated circuit comprises a programmable gate control circuit coupled to a provider field effect transistor (FET) and a consumer FET to provide control signals to the provider and consumer FETs in response to system conditions and application requirements of the USB-PD system. A pulldown current control circuit may provide additional control to slew rate…
