CIRCUITS AND METHODS FOR MOTION DETECTION

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United States of America Patent

APP PUB NO 20120249126A1
SERIAL NO

13077127

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A circuit for detecting object movement includes one or more predetermined threshold detectors, one or more tracking threshold detectors, and an output selector to generate an output signal related to at least one of an output of a predetermined threshold detector or an output of a tracking threshold detector based on a predetermined condition. A method of detecting object movement includes generating: a magnetic field signal proportional to a magnetic field associated with the object, a tracking signal to track peaks of the magnetic field signal, a predetermined threshold output signal responsive to the magnetic field signal and to a predetermined threshold, and a tracking threshold output signal responsive to the magnetic field signal and to the tracking signal, and providing an output signal related to a selected one of the predetermined threshold output signal or the tracking threshold output signal based upon a predetermined condition.

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Patent Owner(s)

Patent OwnerAddress
ALLEGRO MICROSYSTEMS LLC955 PERIMETER ROAD MANCHESTER NH 03103-3353

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Foletto, Andrea Annecy, FR 61 1566
Friedrich, Andreas P Metz-Tessy, FR 76 1649
Vig, Ravi Bow, US 73 4448

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