Circuits and methods providing bandgap calibration for multiple outputs

    公开(公告)号:US11334101B2

    公开(公告)日:2022-05-17

    申请号:US16720333

    申请日:2019-12-19

    摘要: A method and an apparatus to provide bandgap calibration for multiple outputs are disclosed. In one implementation, a computing chip includes a bandgap current generator; a first adjustable current output coupled to the bandgap current generator; a second adjustable current output coupled to the bandgap current generator; a first switch selectively coupling the first adjustable current output to a calibration circuit and to a first analog-to-digital converter (ADC); and a second switch selectively coupling the second adjustable current output to a load on the computing chip and to the ADC.

    Ring oscillator based frequency divider

    公开(公告)号:US11342927B1

    公开(公告)日:2022-05-24

    申请号:US17361217

    申请日:2021-06-28

    摘要: Aspects of the disclosure relate to a ring oscillator (RO) frequency divider configured to frequency divide an input clock by a programmable divider ratio to generate an output clock. In this regard, the RO frequency divider receives the input clock, enables each of a ring of N cascaded inverter stages substantially one at a time in response to the input clock; and outputs a second clock from an output of one of the ring of N cascaded inverter stages. In one aspect, each stage includes a p-channel metal oxide semiconductor field effect transistor (PMOS FET) coupled in series with an n-channel metal oxide semiconductor field effect transistor (NMOS FET). In another, each stage includes two PMOS FETs and an NMOS FET.

    Camera zoom based on sensor data
    3.
    发明授权

    公开(公告)号:US10397484B2

    公开(公告)日:2019-08-27

    申请号:US14861841

    申请日:2015-09-22

    IPC分类号: H04N5/232 G06T7/80 G03B5/00

    摘要: A method, an apparatus, and a computer program product for a camera zoom function are provided. The method includes associating a camera zoom with at least one sensor, detecting a physical characteristic of the camera with the at least one sensor, and adjusting the camera zoom based on the detected physical characteristic of the camera. The detecting the physical characteristic and the adjusting the camera zoom are continuous. An apparatus is provided and includes a camera, a memory, and at least one processor coupled to the memory. The at least one processor is configured to associate a camera zoom with at least one sensor, detect a physical characteristic of the camera with the at least one sensor, and adjust the camera zoom based on the detected physical characteristic of the camera. The detecting the physical characteristic and the adjusting the camera zoom are continuous.

    Audio interface circuits and methods

    公开(公告)号:US09685916B2

    公开(公告)日:2017-06-20

    申请号:US14880939

    申请日:2015-10-12

    IPC分类号: H04R29/00 H03F3/181

    摘要: In one embodiment, an electronic device includes an audio connector port comprising a ground terminal and one or more audio output terminals, a first audio amplifier coupled to one of the audio output terminals, and a multiplexer having an output terminal coupled to the input terminal of the first audio amplifier. Sense circuits inside the electronic device may be alternately coupled through the multiplexer and first audio amplifier so that, in a first mode of operation, the multiplexer couples the audio signal to the first audio output terminal, and in a second mode of operation, the multiplexer couples an analog voltage corresponding to an internally sensed value to the first audio output terminal. Use of the audio connector and audio circuitry to access internal electrical parameters may facilitate testing and analysis of internal systems.

    Faster battery charging in consumer electronic devices

    公开(公告)号:US09819206B2

    公开(公告)日:2017-11-14

    申请号:US14604605

    申请日:2015-01-23

    IPC分类号: H02J7/00

    摘要: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus detects a level of power received from each of a plurality of sources. The apparatus directs the power received from a first source to a charging circuit and directs the power received from at least a second source to the charging circuit. The apparatus directs the power received from the first source to the charging circuit by comparing the detected level of the power with a threshold and directing the power to the charging circuit based on a result of the comparison. The apparatus directs the power received from the at least a second source to the charging circuit by comparing the detected level of the power with the threshold and directing the power to the charging circuit based on a result of the comparison.

    Robust Circuitry for Passive Fundamental Components

    公开(公告)号:US20230098996A1

    公开(公告)日:2023-03-30

    申请号:US17485092

    申请日:2021-09-24

    IPC分类号: G06F11/07 G06F13/40

    摘要: An apparatus is disclosed for making circuitry with passive fundamental components more robust. In example implementations, an apparatus includes at least one passive fundamental component and at least one redundant passive fundamental component. The apparatus also includes fault tolerant circuitry coupled to the at least one passive fundamental component and the at least one redundant passive fundamental component. The fault tolerant circuitry includes fault detection circuitry configured to detect a fault of the at least one passive fundamental component. The fault tolerant circuitry also includes component repair circuitry configured to disconnect the at least one passive fundamental component based on the fault.