Robert Boschgmbh

Rainer Blechschmidt

Pedram Lajevardi

Sayyed Mahdi Kashmiri

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.

Two step high speed auto-zero and self-calibration comparator

An analog-to-digital converter (ADC) sampling system and method for imaging and non-imaging systems to conserve power consumption is provided. The ADC sampling system performs only two comparisons for each pixel based on a background value and a threshold value to determine whether the light detected by the pixel is different from a background image.

Analog-to-digital converter (ADC) sampling system

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.

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Mountain View, CA, United States of America

Rainer Blechschmidt