Abstract: A voltage stacked system that includes a stack of near threshold computing (NTC) chips for achieving inter-chip communication with simple wires as interconnections is disclosed. The chips include at least two secondary supply voltages and at least a secondary ground voltage electrically coupled to the stack of the chips arranged in series. The secondary supply and ground voltages are tapped in a predefined sequence at one or more predefined access points in the stack to generate two versions of an internal voltage within each of the chips. Each of the two versions of the internal voltage is a voltage difference between respective supply voltages and ground voltages, and the two have a set voltage shift such that the chips in the stack have supply voltages overlapping with those in the neighboring chips. Optionally, the two voltages are boosted to further higher voltages as needed using charge pumps.

Abstract: A voltage stacked system that includes a stack of near threshold computing (NTC) chips for achieving inter-chip communication with simple wires as interconnections is disclosed. The chips include at least two secondary supply voltages and at least a secondary ground voltage electrically coupled to the stack of the chips arranged in series. The secondary supply and ground voltages are tapped in a predefined sequence at one or more predefined access points in the stack to generate two versions of an internal voltage within each of the chips. Each of the two versions of the internal voltage is a voltage difference between respective supply voltages and ground voltages, and the two have a set voltage shift such that the chips in the stack have supply voltages overlapping with those in the neighboring chips. Optionally, the two voltages are boosted to further higher voltages as needed using charge pumps.

Abstract: An electronic biasing circuit for memory operating in a high temperature environment, comprising a first memory cell and a second memory cell, a first MOSFET transistor electrically coupled in series with the first memory cell, wherein the first MOSFET transistor is configured as a switch, a second MOSFET transistor electrically coupled in series with the second memory cell, wherein the second MOSFET transistor is configured as a switch, a DC bias current source configured to generate a negative DC bias voltage signal, a first read/word line electrically coupled to a gate of the first MOSFET transistor, and a second read/word line electrically coupled to a gate of the second MOSFET transistor, wherein in response to a read operation of the first memory cell, the second read/word line is configured to deliver the negative DC bias voltage signal to the gate of the second MOSFET transistor.

Abstract: A touch panel sensor system configured to measure mutual-capacitance and self-capacitance is disclosed. The touch panel sensor system includes a sensor configured to detect a change in capacitance associated with a touch event upon a touch panel and a measuring component. The measuring component is configured to detect mutual-capacitance during the first mode of operation and to detect self-capacitance during the second mode of operation. The system also includes a selection component that is configured to receive a selection signal to cause selection of the mode of operation. The system also includes a driver component coupled to the selection component and configured to generate a drive signal, which is furnished to the sensor during the first mode of operation and furnished to the measuring module during the second mode of operation. The amplitude characteristic of the drive signal may have differing values for the first and second modes of operation.

Abstract: A system for a power supply, wherein the power supply is configured to receive an alternating current voltage and supply an output voltage, the system including a switch and a control circuit. The switch receives the alternating current voltage and charges, in response to the power supply receiving the alternating current voltage and not supplying the output voltage, a capacitance to a first voltage. The first voltage is output to a first circuit controlling the power supply while the power supply is receiving the alternating current voltage and not supplying the output voltage. The control circuit deactivates the switch in response to the power supply receiving the alternating current voltage and supplying the output voltage. In response to the control circuit deactivating the switch, the switch stops charging the capacitance, and the first circuit receives the output voltage of the power supply.

Abstract: A capacitive touch panel includes sense electrodes arranged next to one another and drive electrodes arranged next to one another across the sense electrodes. The drive electrodes and the sense electrodes define a coordinate system where each coordinate location comprises a capacitor formed at a junction between one of the drive electrodes and one of the sense electrodes via mutual capacitance between the electrodes. The drive electrodes are configured to receive a first signal from a driver coupled with the drive electrodes for powering the drive electrodes to sense passive input to the capacitive touch panel at each coordinate location. Passive input can also be sensed via self-capacitance of the capacitive touch panel sensors. The drive electrodes and the sense electrodes are configured to receive a second signal from an active stylus to sense active input to the capacitive touch panel at each coordinate location.

Abstract: Various embodiments of the invention use the characteristics of BJTs to compute parameter values required to de-embed the effects of non-idealities including BJT's-mismatch in the reverse saturation current and process-dependent injection factor. In some embodiments, a temperature sensor circuit and method provide high temperature accuracy in a low-cost way by individually calibrating each part, thereby, eliminating the need to accurately measure temperature with a precision temperature sensor.

Abstract: A capacitive touch panel includes sense electrodes arranged next to one another and drive electrodes arranged next to one another across the sense electrodes. The drive electrodes and the sense electrodes define a coordinate system where each coordinate location comprises a capacitor formed at a junction between one of the drive electrodes and one of the sense electrodes via mutual capacitance between the electrodes. The drive electrodes are configured to receive a first signal from a driver coupled with the drive electrodes for powering the drive electrodes to sense passive input to the capacitive touch panel at each coordinate location. Passive input can also be sensed via self-capacitance of the capacitive touch panel sensors. The drive electrodes and the sense electrodes are configured to receive a second signal from an active stylus to sense active input to the capacitive touch panel at each coordinate location.

Abstract: Aspects of the disclosure provide method and apparatus for detecting attributes of an input power supply. The method includes receiving a first signal generated based on a second signal that is predictive. The first signal includes a portion that substantially corresponds to the second signal. Further, the method includes detecting attributes of the portion of the first signal that substantially corresponds to the second signal, and determining attributes of the second signal based on the attributes of the portion of the first signal that substantially corresponds to the second signal.

Abstract: A system for a power supply, wherein the power supply is configured to receive an alternating current voltage and supply an output voltage, the system including a switch and a control circuit. The switch receives the alternating current voltage and charges, in response to the power supply receiving the alternating current voltage and not supplying the output voltage, a capacitance to a first voltage. The first voltage is output to a first circuit controlling the power supply while the power supply is receiving the alternating current voltage and not supplying the output voltage. The control circuit deactivates the switch in response to the power supply receiving the alternating current voltage and supplying the output voltage. In response to the control circuit deactivating the switch, the switch stops charging the capacitance, and the first circuit receives the output voltage of the power supply.

Abstract: In one embodiment, an apparatus includes a transistor having a gate, a drain, and a source. The drain is coupled to receive an AC power supply signal. A component is coupled between an output node and the gate of the transistor. The component couples an output voltage from the output node to charge a gate-source capacitor during a first portion of the AC power supply signal. The transistor is configured to turn on during a second portion of the AC power supply signal to send a charge to the output node where the charge is used to power a circuit of a power supply.

Abstract: Methods and systems for converting analog signals to digital signal using a cyclic analog-to-digital converter are disclosed. For example, such a cyclic analog-to-digital converter may include digitization circuitry configured to digitize either an input signal or an amplified feedback residue signal to produce first digital signals, digital accumulator circuitry configured to produce N-bits of digital information based on the first digital signals over N consecutive cycles, where N is a positive integer, and a residue amplifier configured to amplify a residue signal to produce the amplified feedback residue signal, wherein for at least M cycles, the residue amplifier operates using a capacitor averaging technique, where M is a positive integer and less than N, and wherein for P cycles the residue amplifier operates using a simple gain amplification technique, where P is a positive integer and less than N.

Abstract: Aspects of the disclosure provide method and apparatus for detecting attributes of an input power supply. The method includes receiving a first signal generated based on a second signal that is predictive. The first signal includes a portion that substantially corresponds to the second signal. Further, the method includes detecting attributes of the portion of the first signal that substantially corresponds to the second signal, and determining attributes of the second signal based on the attributes of the portion of the first signal that substantially corresponds to the second signal.

Abstract: In one embodiment, an apparatus includes a transistor having a gate, a drain, and a source. The drain is coupled to receive an AC power supply signal. A component is coupled between an output node and the gate of the transistor. The component couples an output voltage from the output node to charge a gate-source capacitor during a first portion of the AC power supply signal. The transistor is configured to turn on during a second portion of the AC power supply signal to send a charge to the output node where the charge is used to power a circuit of a power supply.