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    Two step high speed auto-zero and self-calibration comparator
    1.
    发明授权
    Two step high speed auto-zero and self-calibration comparator 有权

    公开(公告)号：US11005469B1

    公开(公告)日：2021-05-11

    申请号：US16698626

    申请日：2019-11-27

    Applicant: Robert Bosch GmbH

    Inventor： Sayyed Mahdi Kashmiri ,  Rainer Blechschmidt

    IPC: H03K5/22 ,  H03K5/24

    Abstract: A method of controlling a comparator includes during a first time period, enabling an auto-zero loop to provide an initial offset calibration of a differential preamplifier that includes differential memory capacitors; and during a second time period after the first window, enabling a self-calibrating circuit to provide an offset calibration of the differential preamplifier, and minimizing an output offset of a dynamic latch. Wherein the dynamic latch is configured to latch an output of the differential preamplifier at a sampling frequency, the auto-zero loop including an auxiliary amplifier configured to inject a correction signal into the differential preamplifier based on a voltage across the differential memory capacitors, and the self-calibrating circuit including a charge pump configured to adjust the voltage across the differential memory capacitors based on an output of the dynamic latch.

    Multi-spectral imaging system and method thereof
    2.
    发明授权
    Multi-spectral imaging system and method thereof 有权

    公开(公告)号：US09871981B1

    公开(公告)日：2018-01-16

    申请号：US15630237

    申请日：2017-06-22

    Applicant: Robert Bosch GmbH

    Inventor： Pedram Lajevardi ,  Rainer Blechschmidt

    IPC: H01L27/144 ,  H04N5/33 ,  G01J3/28

    CPC classification number: H04N5/332 ,  G01J3/027 ,  G01J3/2803 ,  G01J3/2823 ,  G01J3/36 ,  G01J2003/2826

    Abstract: A multi-spectral visual light (VL) and infrared (IR) imaging system and method suitable for use in security cameras, security devices, surveillance cameras, surveillance devices, consumer digital cameras, consumer digital devices, thin clients, thick clients, industrial machine vision systems, automotive cameras, home furnishing cameras, residential cameras, commercial cameras, object detectors, as well as other markets and/or applications is provided. The multi-spectral VL and infrared IR imaging system comprises a plurality of VL imaging sensors, a plurality of infrared (IR) imaging sensors, and a readout assembly operatively connected to the CMOS imaging sensors and the IR imaging sensors, wherein the IR imaging sensors configured to generate thermal signals and operate the CMOS imaging sensors.

    Device Having A CMOS VL and IR Imaging System
    5.
    发明申请
    Device Having A CMOS VL and IR Imaging System 审中-公开

    公开(公告)号：US20180376044A1

    公开(公告)日：2018-12-27

    申请号：US15630271

    申请日：2017-06-22

    Applicant: Robert Bosch GmbH

    Inventor： Pedram Lajevardi ,  Rainer Blechschmidt

    IPC: H04N5/225 ,  H04N9/09 ,  H04N5/33

    Abstract: A device comprises a camera having a dual VL and IR imaging sensors and a readout assembly communicatively coupled to the dual VL and IR imaging sensors, an user interface for displaying an image captured by the camera, a processor for processing the captured image, and a memory for storing the processed image. The readout assembly comprises a first readout circuit and a second readout circuit. The dual VL and IR imaging sensors comprises a plurality of visual light (VL) imaging pixels for capturing first image data in response to the visual light (VL) and an infrared (IR) imaging pixels for capturing second image data in response to IR wavelength ranges between 850 nm and 14000000 nm.

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