System and method to reduce latency in serial FFT based OFDM receiver systems with de-interleaver
Granted: April 29, 2025
Patent Number:
12289190
One or more devices, systems, and/or methods are provided. In an example of the techniques presented herein, a receiver has a receiver front end configured to receive time domain data in natural order, a fast Fourier transform module configured to generate frequency domain data in digit reversed order based on the time domain data, a demodulator configured to generate first demodulated data in digit reversed order based on the frequency domain data, and a de-interleaver configured to…
Higher accuracy secure phase-based ranging and direction finding
Granted: April 22, 2025
Patent Number:
12284567
A system and method for improving the accuracy of a secure phase-based ranging procedure and a Direction Finding procedure. The method includes receiving radio frequency signals from a second communication device. The method includes operating in a first mode including generating first location data based on the radio frequency signals and, transferring the first location data to a second processor in compliance with a Bluetooth Host Control Interface. The method includes comparing one…
Low-power fast-transient large current-sink with dynamic biasing
Granted: April 22, 2025
Patent Number:
12283960
A current-sink and method of using the same is provided for sinking transient load currents of a load coupled to a floating-rail. In one embodiment, the current-sink includes a latch system operable to receive a transient load current signal from the load and set a latch to apply a voltage to a gate of a current sinking switch. The current sinking switch includes a first source/drain (S/D) coupled to the floating-rail, and a second S/D coupled to ground, and is operable to sink the…
Transmit spur detection and mitigation for wireless communications devices
Granted: April 15, 2025
Patent Number:
12278720
Systems, methods, and devices reduce and mitigate spurs that may occur in transmit waveforms of wireless communications devices. Methods include beginning transmission of a portion of a data packet from a baseband layer of a wireless communications device, and generating a spur canceling signal based on an estimated magnitude and an estimated phase of a spur signal at identified spur frequencies of a frequency band used for the transmission. Methods also include subtracting the spur…
Efficient procedures to create Bluetooth LE central connection on an advertiser
Granted: April 8, 2025
Patent Number:
12273941
Disclosed are techniques for a device that wants to be a central device when creating a connection in a communication network such as Bluetooth Low Energy (BLE) to advertise information associated with a connection window to solicit a connection with a scanning peer device. When the scanning peer device receives the information, it may enter a connection as a peripheral device with the advertising device at the advertised connection window, allowing the advertising device to become the…
Multi-user communication for wireless devices
Granted: April 1, 2025
Patent Number:
12267261
Systems, methods, and devices provide multi-user communication between wireless devices. Methods include identifying, using processing elements of a software enabled access point, a plurality of wireless devices communicatively coupled to the software enabled access point, aggregating, using the processing elements, data associated with the plurality of wireless devices, and generating, using the processing elements, transmission instructions identifying transmission periods for the…
Systems, methods, and devices for direct sampling in data converters
Granted: April 1, 2025
Patent Number:
12267054
Systems, methods, and devices provide sampling for data converters. Methods include receiving a voltage from a voltage source, and identifying transconductance parameters and resistance parameters associated with a data converter, the transconductance parameters identifying a transconductance of the data converter. Methods also include selecting a resistor from a plurality of dynamically selectable resistors based on the resistance parameters, generating, using a programmable gain…
Detecting push button press of a passive rotary knob on a touch screen
Granted: March 25, 2025
Patent Number:
12261001
A touch screen device is disclosed. The touch screen device includes a touch screen panel having a capacitive sense array, and a passive dial including first, second and third conductive parts. The first conductive part and the third conductive part are in proximity to a surface of the touch screen panel, and the second conductive part is conductively coupled to the third conductive part when the passive dial is pressed and is not conductively coupled to the third conductive part when…
Ultra-low power adaptively reconfigurable system
Granted: March 25, 2025
Patent Number:
12261602
Implementations disclosed describe an integrated circuit (IC) having a plurality of reconfigurable analog circuits that include a finite state machine (FSM) logic circuit and further include an interface to receive an input signal. In a first IC configuration, with the plurality of reconfigurable analog circuits having a first configuration setting, the IC may process the input signal through the plurality of reconfigurable analog circuits to generate a first output value based on the…
Efficiency improvement for power factor correction based AC-DC power adapters
Granted: March 25, 2025
Patent Number:
12261522
Controlling power factor correction (PFC) in a secondary-controlled alternating current (AC) to direct current (DC) (AC-DC) power adapter is described. In one embodiment, an apparatus includes a transformer, a primary-side controller coupled to the transformer, a PFC component coupled to the primary-side controller, and a secondary-side controller coupled to the transformer. The secondary-side controller is configured at least to obtain data informative of an amount of power, and…
Independently clocking digital loop filter by time-to-digital converter in digital phase-locked loop
Granted: March 18, 2025
Patent Number:
12255660
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…
Synchronous rectifier scheme to avoid cross-conduction in a fly-back converter
Granted: March 18, 2025
Patent Number:
12255540
A fly-back converter and method of operating is provided to eliminate cross-conduction between a power-switch (PS) on a primary side of a transformer and a synchronous-rectifier (SR) on a secondary side when operating in continuous conduction mode. Generally, the method includes turning on the SR when a drain voltage of the SR drops to a negative voltage followed by a rise in the SR-drain-voltage at a first slope as a current is drawn from the secondary side of the transformer through…
Multipath robust antenna design for phase-based distance measurement
Granted: March 18, 2025
Patent Number:
12255405
A system and method reconfiguring an antenna for reducing and/or eliminating the effects of multipath on a phase-based measurement system. The method includes steering an antenna unit into a first direction to cause the antenna unit to generate a first constant tone (CT) signal based on a plurality of multipath signals. The method includes performing a phase measurement on the first CT signal to generate a first phase measurement value. The method includes steering the antenna unit into…
Nano-power capacitance-to-digital converter
Granted: March 18, 2025
Patent Number:
12254155
An asynchronous capacitance-to-digital conversion is described that allows for very low-power operation when during inactive periods (when no conductive object is in contact or proximity to the sensing electrodes). Asynchronous operation of a capacitance-to-digital converter (CDC) provides for capacitance-to-digital conversion without the use of system resources and more power intensive circuit elements.
Systems, methods, and devices for wireless detection of radio frequency identification devices
Granted: March 11, 2025
Patent Number:
12248836
Systems, methods, and devices detect radio frequency identification devices. Methods include transmitting a signal from a transmitter of a wireless device compatible with a wireless communications protocol, and receiving, using a receiver of the wireless device, a signal from a radio frequency identification (RFID) device, the signal comprising one or more resonance parameters. Methods also include generating sensing information and an estimated distance value based, at least in part, on…
Adaptive wireless connections in multi-mode devices
Granted: February 25, 2025
Patent Number:
12238589
Implementations disclosed describe techniques and systems that improve wireless connectivity between devices that support multiple operation modes, by monitoring a quality of the established wireless connection and performing a change of the operation mode in response to changing conditions. The disclosed techniques include obtaining metrics characterizing quality of the wireless connection, identifying a utility function that is specific to an application supported by the wireless…
System and method for high resolution, high frame rate video capture using a USB port
Granted: February 25, 2025
Patent Number:
12238369
A system and method are provided for capturing a high resolution, high frame rate video using a Universal Serial Bus (USB) port. Generally, the method involves transmitting a High-Definition Multimedia Interface (HDMI) video including a number of video frames from a HDMI-source. Receiving the HDMI video and buffering and splitting each one of the video frames into a plurality of split video frames. Each of the split video frames is converted into a number of USB data packets. USB data…
Retransmission softbit decoding
Granted: February 25, 2025
Patent Number:
12236958
Disclosed are methods and systems for using softbit decoding techniques in retransmission-based networks for error concealment of packets corrupted by bit-errors. The softbit decoding techniques derive softbit information from multiple corrupted hardbits of the retransmitted packet to aid a softbit decoder in decoding the packet. The approach realizes improved error concealment capability while maintaining a simple system architecture. A retransmission softbit module is inserted between…
High-voltage tolerant, high-speed reverse current detection and protection for buck-boost converters
Granted: February 25, 2025
Patent Number:
12235296
A controller includes a buck gate driver coupled to first high-side switch and first low-side switch of a buck-boost (BB) converter. A zero crossing detection (ZCD) comparator is coupled to first low-side switch. The ZCD comparator is to, while the BB converter operates in buck mode: detect zero current flow through inductor; and turn off first low-side switch in response to detecting the zero current. A boost gate driver is coupled to second high-side switch and second low-side switch…
Flexible and optimized power management unit (PMU) for multiple power supply scenarios
Granted: February 18, 2025
Patent Number:
12228997
Apparatuses and methods of operating a flexible and optimized power management unit (PMU) for multiple power supply scenarios are described. One integrated circuit includes a first terminal to couple to an unregulated power supply, a second terminal to couple to a regulated power supply, a first regulator, and a second regulator. The first regulator outputs a first supply voltage in a first configuration, and the second regulator outputs a second supply voltage in a second configuration.…
