Methods to remove dribble introduced and regenerate sync bits lost due to squelch delays in USB high speed packet repeating
Granted: December 13, 2022
Patent Number:
11528095
Disclosed are techniques for removing dribble bits following the end-of-packet (EOP) of a High-Speed data packet inserted by the transmission envelope detector of a repeater/hub that interconnects electronic devices compliant with Universal Serial Bus (USB) Specification Revision 2.0 or higher. A physical layer logic (PHY) of a first port of the repeater/hub receives a High-Speed data packet to store a recovered bit stream into an elastic buffer. The recovered bit stream may include…
Mode-transition architecture for buck-boost converter
Granted: December 13, 2022
Patent Number:
11527957
A mode-transition architecture for USB Type-C controllers is described herein. In an example embodiment, an integrated circuit (IC) controller includes controller includes a controller coupled to a slope compensation circuit, the controller to cause the slope compensation circuit to apply a first slope compensation to the input current in a first mode in which the buck-boost converter is operating in a discontinuous conduction mode (DCM). The controller detects a transition of the…
WLAN coexistence with other standards using communications mask aligned with target wake time
Granted: December 6, 2022
Patent Number:
11523338
A method can include negotiating a target wake time (TWT) with a TWT session period (TWT SP) duration and generating mask data that inhibits communications according to a second standard during at least a portion of TWT SP. A method can further include, by operation of second communication circuits, generating a communications mask from mask data received from WLAN circuits, in response to the timing signal, synchronizing the communications mask with the TWT SP, and in response to the…
Bootstrap voltage refresh for buck-boost converter
Granted: December 6, 2022
Patent Number:
11522458
An apparatus includes a first high-side driver of a buck-boost converter, the first high-side driver powered between a first bootstrap voltage (VBST1) and a first output voltage of a first high-side switch driven by the first high-side driver. A second high-side driver is powered between a second bootstrap voltage (VBST2) and a second output voltage of a second high-side switch driven by the second high-side driver. A comparator is to detect VBST1 drop below a threshold value with…
ESD protection circuit
Granted: December 6, 2022
Patent Number:
11521962
An electrostatic discharge protection circuit capable of clamping both positive and negative ESD events and passing signals is provided. Generally, the circuit includes a p-channel field-effect transistor (PFET) clamp coupled to a pin to be protected, the PFET clamp including a plurality of PFETs in a DN-well, an n-channel field-effect transistors (NFET) clamp coupled between ground and the pin through the PFET clamp, the NFET clamp including a plurality of NFETs coupled in series, and a…
Method and apparatus to save power in USB repeaters/re-timers
Granted: November 29, 2022
Patent Number:
11513584
Disclosed are techniques for saving power in a Universal Serial Bus (USB) repeater/re-timer between a USB host and a peripheral device by intercepting packets received from the host to predict the direction of data traffic to selectively turn off/on circuitry of a peripheral port used to receive packets from the peripheral device. If a host port determines that the host is sending a start-of-frame (SOF) packet, the direction of data flow is from the host to the peripheral device, and the…
Microwave oven coexistence with Wi-Fi/BT
Granted: November 15, 2022
Patent Number:
11503612
A wireless communication device and method for operating the same for mitigating interference in a wireless communication network are provided. Generally, the method includes sensing with the wireless communication device pulses of electromagnetic radiation recurring within a band of frequencies used by the device for communication of signals, identifying the pulses as interference, and determining a number of frequencies of the interference within the band of frequencies used by the…
Scheduling of network traffic for wireless communications devices
Granted: November 8, 2022
Patent Number:
11497040
Systems, methods, and devices schedule network traffic for wireless communications devices. Methods include identifying a plurality of stations included in a first network, and generating, using one or more processors of a first access point, a network traffic schedule configured to assign a plurality of service periods to the plurality of stations, the network traffic schedule identifying a plurality of sleep times and wake times for the plurality of stations. Methods further include…
Analog to digital converter with floating digital channel configuration
Granted: November 8, 2022
Patent Number:
11496148
One or more systems and/or methods for implementing an analog-to-digital converter system with a floating digital channel configuration are provided. An analog input component is configured to receive measured analog signals, and output analog signals, corresponding to the measured analog signals, to an analog channel coupled to the analog input component. The analog channel is coupled to a switching component connected to a first digital channel and a second digital channel. The analog…
Robust WLAN reception in WiFi-Bluetooth combination systems by interference whitening
Granted: November 1, 2022
Patent Number:
11489704
The embodiments described herein are directed at techniques to de-correlate Bluetooth interference seen across WLAN receive antennas/space in a Bluetooth transceiver/WLAN transceiver combination device. A Bluetooth interference whitening technique may be utilized, wherein a whitening matrix is computed based on a leakage signal resulting from a training signal transmitted by the Bluetooth transceiver. The leakage signal may leak in to the WLAN transceiver and a set of attributes is…
Time of arrival estimation for Bluetooth systems and devices
Granted: October 25, 2022
Patent Number:
11483691
Disclosed herein are systems, methods, and devices for time of arrival estimation in wireless systems and devices. Devices include a packet detector configured to identify a data packet included in a received signal having a symbol frequency. Devices also include a time stamping unit configured to generate an initial time stamp in response to the packet detector identifying the data packet. Devices further include an IQ capture unit configured to acquire a plurality of IQ samples…
Providing a baseline capacitance for a capacitance sensing channel
Granted: October 25, 2022
Patent Number:
11481066
A capacitance-sensing circuit may include a channel input associated with measuring a capacitance of a unit cell of a capacitive sense array. The capacitance-sensing circuit may also include a capacitive hardware baseliner that is coupled to the channel input. The capacitive hardware baseliner generates a baseline current based on a time constant of the channel input associated with the measuring of the capacitance of the element of the capacitive sense array using the programmable…
Pressure detection and measurement with a fingerprint sensor
Granted: October 18, 2022
Patent Number:
11475703
A circuit, system, and method for measuring or detecting pressure or force of a fingerprint on an array of electrodes is described. Pressure or force may be measured or detected using a processed image of the fingerprint, or by measurement of capacitance of deformed variable capacitors.
Optimized secure phase-based positioning
Granted: October 11, 2022
Patent Number:
11470450
Disclosed are techniques for time-multiplexing between sensing and adjacent signal transmission functionalities on the same hardware platform, such as a chipset supporting a main ranging device in passive entry passive start (PEPS) applications using secure multi-carrier phase-based ranging solutions to estimate the range between the main ranging device and a target device. The supporting chipset may be configured to operate as a sensor to receive continuous tone (CT) signals or…
Apparatus, systems, and methods for selecting a wireless device antenna for communication
Granted: October 11, 2022
Patent Number:
11469783
Example systems and methods of a wireless device use a signal attribute detector to determine a signal attribute value associated with a first frame received via a first antenna. Media access control (MAC) logic can detect that the first frame indicates an acknowledgement (ACK) of a second frame transmitted by the wireless device. Responsive to the detection of the ACK by the MAC logic, an antenna evaluator uses the signal attribute value to select one of the first antenna and the second…
Impedance sensing methods
Granted: October 11, 2022
Patent Number:
11467693
Apparatus and methods of impedance sensing are described. One method includes performing a first digital conversion of an attribute of a sensor electrode and performing a second digital conversion of the attribute of the sensor electrode. The second digital conversion differs by at least one characteristic from the first digital conversion. The method further includes calculating a resistance of the sensor electrode from a first and second digital value of the first and second digital…
Transmit spur detection and mitigation for wireless communications devices
Granted: September 27, 2022
Patent Number:
11456901
Systems, methods, and devices reduce and mitigate spurs that may occur in transmit waveforms of wireless communications devices. Methods include receiving a plurality of samples of a baseband transmission and generating, using a processing device, an estimated amplitude and an estimated phase of a spur component of the baseband transmission based on the received plurality of samples, the spur component being a spectral spike in a transmit waveform. Methods further include generating,…
Non-finger object rejection for fingerprint sensors
Granted: September 27, 2022
Patent Number:
11455817
A method for detecting a finger at a fingerprint sensor includes detecting a presence of an object at a fingerprint sensor and, in response to detecting the presence of the object, acquiring image data for the object based on signals from the fingerprint sensor. The method further includes, for each subset of one or more subsets of the image data, calculating a magnitude value for a spatial frequency of the subset, and identifying the object as a finger based on comparing the magnitude…
Touch surface scanning method and device
Granted: September 20, 2022
Patent Number:
11449168
A device acquires first sense data representing first electrical signals sensed from a first subset of a plurality of sensors of a touch surface. The device acquires second sense data representing second electrical signals sensed from a second subset of the plurality of sensors. The device detects a first set of one or more touches based on the first sense data and the second sense data. After the acquiring of the first sense data, the device acquires third sense data representing third…
Multi-ported nonvolatile memory device with bank allocation and related systems and methods
Granted: September 20, 2022
Patent Number:
11449441
A memory device that includes a first port and a second port. The first port includes a first clock input, at least one first command address input, and at least one data input or output configured to transfer data in relation to the memory device. The second port includes a second clock input and at least one command, address, and data input/output (I/O) configured to receive command and address information from, and to transfer data in relation to the memory device. The memory device…
