Abstract: Systems, methods, circuits and computer-readable mediums for multi-channel RAM system with error-correcting code (ECC) protection for partial writes are provided. In one aspect, a method includes accessing a plurality of bursts of partial data units from a plurality of respective bus ports, forming a plurality of memory addresses for a plurality of memory channels by interleaving addresses from the plurality of bus ports, and performing read-modify-write (RMW) error-correcting code (ECC) processes to write partial data units from the plurality of bursts into memory portions corresponding to the formed memory addresses in the plurality of memory channels.

Abstract: An antenna on integrated circuit (IC) package is disclosed. In an embodiment, an IC package comprises: a substrate; a radio frequency (RF) transceiver attached to the substrate; mold compound encapsulating the substrate; a shield layer formed on the mold compound; and one or more vias extending vertically through the shield layer and the mold compound, providing a conductive path to the RF transceiver. In another embodiment, a method comprises: attaching a radio frequency (RF) transceiver to a substrate; encapsulating the substrate with mold compound; forming a shield layer on the mold compound; and forming one or more vias through the shield layer and mold compound, providing a conductive path to the RF transceiver.

Abstract: In an embodiment, a method comprises: obtaining a virtual bus address; translating the virtual bus address to a physical address of a portion of NVM storing first data; determining that the first portion of NVM has been allocated previously; reading the first data from the first portion of NVM; determining whether writing second data to the first portion of the NVM would change one or more bits in the first data; responsive to the determining that a write operation only changes data bits in the first data from 1 to 0, writing the second data over the first data stored in the first portion of NVM; and responsive to the determining that one or more bits in the first data would be flipped from 0 to 1, reallocating the first portion of NVM to a second portion of NVM, copying the first data from the first portion of NVM to the second portion of NVM with the first data modified by the second data.

Abstract: In one embodiment, a stylus has one or more electrodes and one or more computer-readable non-transitory storage media embodying logic for transmitting signals wirelessly to a device through a touch-sensor of the device. The stylus also has an electronic circuit operable to provide an input that changes a property of one or more materials located on the body of the stylus or on the stylus tip.

Abstract: In some implementations, an automatic gain control (AGC) circuit comprises: a pre-divider circuit operable to pre-divide an input signal according to a pre-divider circuit setting and output a pre-divided signal; a pre-amplifier operable to pre-amplify the pre-divided signal and output a pre-amplified signal; a post-divider circuit operable to post-divide the pre-amplified signal according to a post-divider circuit setting; an analog-to-digital converter (ADC) operable to generate a digital data stream from the post-divided signal; logic operable to sample the digital data stream; determine a pre-divider circuit setting and a post-divider circuit setting based on the sampled data stream; set the pre-divider circuit and the post-divider circuit based on the determined settings; and generate a received signal strength value based on the pre-divider circuit setting and the post-divider circuit setting.

Abstract: In one embodiment, a stylus has one or more sensors that detect the movement of the stylus, such as an accelerometer, a gyroscope, or a magnetometer. The stylus wirelessly transmits signals to a device based on the movement of the stylus.

Abstract: In certain embodiments, a touch sensor includes first, second, and third electrode tracks. The first electrode track includes a first electrode, which has a first segment, a second segment connected to the first segment, and a third segment connected to the first segment. The second electrode track includes a second electrode, which includes a fourth segment, a fifth segment connected to the fourth segment, and a sixth segment connected to the fourth segment. A portion of the second segment extends between portions of the fifth and sixth segments from a perspective orthogonal to the surface of the touch sensor, and a portion of the fifth segment extends between portions of the second and third segments from the orthogonal perspective. The third electrode track includes a third electrode, a portion of which extends between portions of the first and second electrodes from the orthogonal perspective.

Abstract: Systems and techniques for single-wire communications are described. A described technique includes detecting transitions on a single-wire bus that are produced by a host device, determining an estimated baud rate of the host device based on the transition, and communicating with the host device based on the estimated baud rate. Determining the estimated baud rate can include charging a capacitor based on a charging rate in response to a detection of a first transition of the transitions, sampling a capacitor voltage associated with the capacitor in response to a detection of a second transition of the transitions, and adjusting the charging rate based on a comparison between the capacitor voltage and a reference voltage.

Abstract: Systems and methods for controlling small grids of appliances are described. One sample method includes receiving consumption data from a plurality of electrical appliances that are plugged into outlets at a first location and monitoring power usage at the first location. The method includes evaluating the received consumption data to identify one or more predetermined conditions in one or more of the plurality of electrical appliances and evaluating stored data related to power consumption preferences at the first location. The power consumption preferences define conditions when a consumer associated with the first location has agreed to enable remote control of at least one designated appliance upon an occurrence of one or more predetermined conditions. The method includes determining that the one or more conditions are satisfied and to provide a first secure communication to the first appliance to control the power consumption.

Abstract: The disclosed embodiments provide security extensions for memory (e.g., non-volatile memory) by means of address and data scrambling and differential data storage to minimize exposure to side channel attacks and obfuscate the stored data. The scrambling function maximizes reverse engineering costs when recovering sequences of secret keys.

Abstract: An apparatus of one embodiment includes a sensor having a plurality of electrodes and a controller having a processor and a memory. The memory includes logic operable to configure the electrodes to form a first cluster pattern having a plurality of first clusters of two or more electrodes, apply voltage to each first cluster, and determine a plurality of first values associated with a capacitance of a first cluster. The logic is further operable to configure the electrodes to form a second cluster pattern having a plurality of second clusters of two or more electrodes, apply voltage to each second cluster, and determine a plurality of second values associated with a capacitance of a second cluster. At least one second cluster is interleaved with an adjacent second cluster. The logic is further operable to determine a position of an object based at least on the second values.

Abstract: In one embodiment, an apparatus includes one or more display layers within a display stack, the one or more display layers include a plurality of crystals configured to adjust a polarization of light passing through the one or more display layers. The apparatus includes a reference voltage layer that provides the one or more display layers with a reference voltage. The apparatus includes a plurality of pixel-drive electrodes that adjust the polarization of the light passing through the one or more display layers by adjusting an electrical potential between the plurality of pixel-drive electrodes and the reference voltage layer. The pixel-drive electrodes provide drive signals for a touch sensor and the reference voltage layer provides sense signals.

Abstract: In one embodiment, a stylus includes one or more electrodes and one or more computer-readable non-transitory storage media embodying logic for transmitting signals wirelessly to a device through a touch sensor of the device. The computer-readable non-transitory storage media of the stylus further embodies logic for allocating between the stylus and the device electric energy available at the stylus or the device based on one or more first criteria.

Abstract: An antenna on integrated circuit (IC) package is disclosed. In an embodiment, an IC package comprises: a substrate; a radio frequency (RF) transceiver attached to the substrate; mold compound encapsulating the substrate; a shield layer formed on the mold compound; and one or more vias extending vertically through the shield layer and the mold compound, providing a conductive path to the RF transceiver. In another embodiment, a method comprises: attaching a radio frequency (RF) transceiver to a substrate; encapsulating the substrate with mold compound; forming a shield layer on the mold compound; and forming one or more vias through the shield layer and mold compound, providing a conductive path to the RF transceiver.

Abstract: In one embodiment, an apparatus includes a sensor having a plurality of electrodes and a controller having a processor and a memory. The memory includes logic operable, when executed by the processor, to connect each electrode of a first subset of the plurality of electrodes, apply voltage to the first subset, and determine a first value associated with a capacitance of the first subset. Based at least on the first value, the logic is further operable to connect each electrode of a second subset of the plurality of electrodes, the second subset having fewer electrodes than the first subset, apply voltage to the second subset, and determine a second value associated with a capacitance of the second subset.

Abstract: The disclosed embodiments provide a mechanism to support implementation of semaphores or messaging signals between masters in a multi-master system, or between tasks in a single master system. A semaphore flag register contains one or more bits indicating whether resources are free or busy. The register is aliased to allow atomic read-and-clear of individual bits in the register. Masters poll the status of a resource until the resource reads as free. Alternatively, interrupts or events per master can be implemented to indicate availability of a resource.

Abstract: In one embodiment, a method includes receiving, from a touch sensor of a device, one or more signals corresponding to touch or proximity inputs within a touch-sensitive area of the touch sensor. The touch sensor comprising one or more nodes. The method also includes applying an offset to one or more of the signals. The offset corresponding to a variation in a distance between a touch panel and a ground plane or display of the device. The method also includes determining whether a touch input to the touch sensor has occurred based at least in part on the signals and the offset as applied.

Abstract: Systems, methods, circuits, devices and computer-readable mediums for configuring serial devices are disclosed. In some implementations, a device comprises: an input for receiving first and second requests from a serial bus; a decoder coupled to the input and configured to determine if either of the first and second requests is a configuration mode request; a controller coupled to the decoder and configured to: in response to a determination that the first request is a configuration mode request, program a configuration block with configuration data obtained from the serial bus and alter a device behavior according to the configuration data; and in response to a determination that the second request is not a configuration mode request, perform one or more actions on the device according to the second request.

Abstract: In one embodiment, a stylus includes a first sensor disposed proximate a first end of the stylus. The first sensor is adapted to receive a first receive signal via a first capacitive coupling with a touch sensor of a device. The first end of the stylus is at a tip-end of the stylus. The stylus also includes a second sensor disposed proximate the first end of the stylus. The second sensor is adapted to receive a second receive signal via a second capacitive coupling with the touch sensor of the device. A proximity of the first sensor to the first end of the stylus is greater than a proximity of the second sensor to the first end of the stylus. A widest portion of the first sensor has a greater width than at least a portion of the second sensor.

Abstract: A system of one embodiment includes a touch-sensing device and a stylus. The touch sensing device includes an electrode array, which includes a plurality of electrode line pairs, and a controller. Each electrode line pair includes a first and second electrode line to send a first and second signal, respectively. The stylus includes a sensor to measure the first and second signals, a signal processor to determine position information, and a transmitter to send position information to the touch-sensing device. A method of another embodiment includes sending, by a first electrode line, a first signal having a first frequency. A second electrode line sends a second signal having a second frequency. A stylus receives the first and second signals. The stylus sends a response signal to the touch-sensing device based on the first and second signals. A position of the stylus is determined based on the first and second signals.