Abstract: 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 the passive dial is not pressed. A position of the first conductive part above the capacitive sense array corresponds to a touch index in the capacitive sense array and a position the third conductive part above the capacitive sense array corresponds to a button press index in the capacitive sense array. The first, second and third conductive parts are movable in conjunction with a rotation of the passive dial.

Abstract: 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 the received signal, the sensing information representing a sensed condition at the RFID device, and the estimated distance value representing an estimate of a distance between the wireless device and the RFID device.

Abstract: Implementations disclosed describe devices for improving wireless localization and ranging operations. In an example embodiment, a circuit includes a receive chain configured to receive a first signal of a first frequency in a first frequency band. The circuit includes a transmit chain configured to transmit a second signal of a second frequency in a second frequency band. The circuit includes an active reflection circuit coupled between the receive and transmit chains. The active reflection circuit includes a frequency conversion scheme. The frequency conversion scheme is configured to receive an input signal from the RX chain at the first frequency, convert the input signal to an output signal at the second frequency, and provide the output signal to the TX chain.

Abstract: Systems, methods, and devices implement channel scanning for establishing connections between wireless devices. Methods include selecting a first plurality of channels of a wireless device, the first plurality of channels being sub-bands of a wireless device, scanning the first plurality of channels for a transmission from an access point, the first plurality of channels being scanned in parallel, and selecting a second plurality of channels of the wireless device, the second plurality of channels being sub-bands of the wireless device. Methods further include scanning the second plurality of channels for the transmission from the access point, the second plurality of channels being scanned in parallel.

Abstract: 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, receiving, using a receiver of the wireless device, an encoded signal from a radio frequency identification (RFID) device, and determining a plurality of data values based, at least in part, on the received encoded signal. Methods further include generating an estimated distance value based, at least in part, on the received encoded signal, the estimated distance value representing an estimate of a distance between the wireless device and the RFID device.

Abstract: A system includes a transformer, a first controller, a discharge circuit to discharge an external capacitor based on an undervoltage threshold, and a second controller. The second controller is coupled to the discharge circuit, and is also coupled to receive a rectified Ac voltage and to receive control signals from the first controller. The second controller includes a gate driver to turn on a primary field effect transistor (FET). The second controller also includes a startup controller coupled to the gate driver. The startup controller is configured to increase a duty cycle of the primary FET based on whether a control signal is received from the first controller. The startup controller is also configured to determine a current duty cycle of the primary FET and to turn off the primary FET based on whether the voltage of the AC-DC converter is above an undervoltage threshold.

Abstract: A multi-protocol network and methods for operating the same are provided. The method begins with establishing a wireless-connection between a first transceiver in a first device and a second-transceiver in a second device using a wireless-protocol. First, wired-protocol packets and non-packet data are received and converted in the first device to second-packets compatible with the wireless-protocol by inserting synchronization-bits non-packet data in a preamble field. This is initiated by sensing arrival of the preamble without waiting for a start of data. The second-packets are transmitted from the first transceiver to the second, and converted to third-packets compatible with the wired-protocol by removing the synchronization-bits. Latency is improved by initiating/starting a packet to the wired controller before a data portion of the packet is received. The number of synchronization bits is selected so the second-packets are aligned and synchronized with wireless-protocol packets.

Abstract: An error amplifier includes an output pin coupled to a pulse width modulation (PWM) comparator of a buck-boost converter. A first transconductance amplifier adjusts an output current at the output pin and operates in a constant voltage mode. The first transconductance amplifier includes a first positive input to receive a first voltage reference and a first negative input coupled to a tap point of a voltage divider coupled between a voltage bus and a ground of the buck-boost converter. A second transconductance amplifier also adjusts the output current at the output pin and operates in a constant current mode. The second transconductance amplifier includes a second positive input to receive a second voltage reference and a second negative input coupled to a current sense amplifier, the current sense amplifier being coupled to a sense resistor positioned inline along the voltage bus.

Abstract: Apparatuses and methods of differential driving of adjacent electrodes for low electromagnetic interference (EMI) for scanning a touch panel are described. One apparatus generates an in-phase drive signal and an opposite-phase drive signal and applies, at a substantially same time, the in-phase drive signal to a first transmitter electrode and the opposite-phase drive signal to a second transmitter electrode adjacent to the first transmitter electrode. The apparatus receives a first sense signal from a first receiver electrode and a second sense signal from a second receiver electrode adjacent to the first receiver electrode. The apparatus combines the first sense signal and the second sense signal to obtain a third sense signal. The third sense signal represents a first self capacitance associated with the first receiver electrode. The apparatus detects a presence of an object on a touch panel using at least the first self capacitance.

Abstract: A method is disclosed to estimate energy consumed by a component in a microcontroller during operation including identifying “event” activities, where the energy consumed by the component may be determined by the number of events executed by the component, and “duration” activities, where the energy consumed may be determined by the duration of time required to execute of the activity, and determining the energy consumed by the component based on the number of events/duration of time and an energy coefficient which corresponds to the amount of energy consumed by the component to execute the activity, under given operating conditions. In an embodiment, data transfers at a bus interface may represent event activities. Apparatus to estimate the energy consumed is disclosed including bus monitors to receive signals representing data transfers at a bus interface and provide signals indicating the number of data transfers executed.

Abstract: A method of foreign object detection by a wireless power delivery system is disclosed. A decaying coil voltage signal of a transmitting coil of the wireless power delivery system is detected. A first comparator is used to trigger a cycle count of the decaying coil voltage signal. When the first comparator triggers the cycle count, a second comparator is used to count a number of cycles of the decaying coil voltage signal. A quality factor (Q-factor) of the transmitting coil is determined based on the number of cycles of the decaying coil voltage signal, a reference signal of the first comparator, and a reference signal of the second comparator. Whether a foreign object is present is determined based on the Q-factor and a foreign object detection (FOD) threshold level.

Abstract: An apparatus comprises a sensor array of capacitive sensors. A capacitive sensor of the sensor array is connected to a transmitting pin and a receiving pin, and the sensing pin and the receiving pin are connected to a sensing device. The apparatus includes the sensing device configured to perform a liquid sensing operation during runtime operation of the apparatus by dynamically ganging together a set of capacitive sensors of the sensor array as a combined capacitive sensor node, wherein the combined capacitive sensor node is connected to the sensing device by transmitting pins and receiving pins of the set of capacitive sensors, sensing the combined capacitive sensor node to create a sensing result, and evaluating the sensing result to determine whether liquid is present on the sensor array.

Abstract: Systems, methods, and devices estimate timing values for data transmission associated with wireless communications devices. Methods include receiving, at a transceiver of a wireless communications device, at least one symbol included in a data transmission, obtaining a plurality of samples of the at least one symbol, and generating, using one or more processors, a plurality of correlation values for each of the plurality of samples. Methods further include generating, using the one or more processors, a multi-sample interpolation model based on at least some of the plurality of correlation values and determining, using the one or more processors, an estimated maximum correlation value and a temporal offset value based on the multi-sample interpolation model, the temporal offset value being used for a time of arrival computation.

Abstract: One or more computing devices, systems, and/or methods are provided. In an example, a method comprises storing a first application image and a second application image in an application image memory, designating the first application image as active, receiving a first address for accessing the application image memory from a processor, modifying the first address based on a first offset between a base starting address of the first application image and a starting physical address of the first application image in the application image memory to generate a second address, and accessing the application image memory using the second address.

Abstract: A scanning operation is performed to measure a first capacitance of a first sensor arrangement located proximate a capacitive sensor that corresponds to a function of a device. In response to the first capacitance not exceeding a first threshold, the scanning operation measures a second capacitance of the capacitive sensor to create an output used to control the function of the device. In response to the first capacitance exceeding the first threshold, operation of the scanning operation is modified to skip measuring of the second capacitance or to refrain from transmitting the output to a host of the device for controlling the function.

Abstract: Systems, methods, and devices detect defects in touch panels. Methods include scanning, using a designated integration window, a plurality of electrodes of a sensing device to obtain a plurality of measurements and determining a plurality of variance values for the plurality of electrodes based on the plurality of measurements, the plurality of variance values identifying variances in the plurality of measurements between adjacent sense locations of the sensing device. Methods also include determining if a defect is present in the sensing device based, at least in part, on a comparison of the plurality of difference values with the plurality of threshold values.

Abstract: A wireless device includes a transmitter adapted with Bluetooth® low energy (BLE) capability and logic at least one of coupled to or integrated within the transmitter. The logic randomly generates a frequency offset based on bits within a frame synch packet to be transmitted during a keyless access attempt of an enclosure having a receiver. The logic causes the bits of the frame synch packet to be encrypted with an encryption key. The logic causes a frequency of the frame synch packet to modified by the frequency offset before the transmitter transmits the frame synch packet to the receiver.

Abstract: 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 the permanent MAC address, the first wireless device encrypts the permanent MAC address to obtain an encrypted MAC address and sends a response to the request, including the encrypted MAC address, to the AP.

Abstract: Techniques are described for using one or more wireless host devices to perform tire localization of TPMS sensor data by determining received signal strength indicator (RSSI) signatures that are unique to the wireless communication channel between a host device and each TPMS sensor. RSSI signatures represents a periodic variation of the wireless communication channel between a host device on the car body and a TPMS sensor in a rotating tire. Characteristics of the communication channel is a function of the wheel angle and is periodic with wheel rotations. The RSSI signatures may be created by matching RSSI measurements of packets received by the host device from a TPMS sensor with wheel angles derived from wheel speed sensor (WSS) data of the anti-lock braking system (ABS). The RSSI signatures are a unique marker of each wheel that may be used to identify the locations of the TPMS sensors for tire localization.

Abstract: Systems, methods, and devices detect wake signals included in audio signals. Methods include receiving a dataset including raw audio data, the raw audio data comprising a plurality of audio samples and associated metadata, and generating, using one or more processing elements, an augmented dataset based on the raw audio data, the augmented dataset comprising a plurality of annotations identifying types of raw audio data. Methods further include generating, using the one or more processing elements, a feature dataset by extracting features from the augmented dataset based, at least in part, on the plurality of annotations, and generating, using the one or more processing elements, a wake signal detection model based, at least in part, on the feature dataset, the wake signal detection model being a machine learning model trained based on the feature dataset.