The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 03, 2001
Filed:
Dec. 17, 1998
Eric DeWilde, Fountain Valley, CA (US);
Kenneth Brown, Banning, CA (US);
Donald Rimlinger, Bloomfield, NY (US);
Optek Technology, Inc., Carrolton, TX (US);
Abstract
A magnetic sensing device comprising a magnetic sensor and a digital circuit is disclosed. The magnetic sensor is operable to output an analog signal as an indication of any movement of an object. The digital circuit can include a dynamic reference threshold generator to output a reference signal in response to a detection of a signal feature of the analog signal and to a detection of a diametric signal feature of the analog signal, and an output format generator to output a digital signal in response to a comparison of the analog signal and the reference signal. The digital circuit can include a dynamic reference threshold generator to output a reference signal in response to a detection a first pair of quadrants of the analog signal and a detection of a second pair of quadrants of the analog signal, and an output format generator to output a digital signal in response to a comparison of the analog signal and the reference signal. The digital circuit can include a dynamic dual reference threshold generator to output a first reference signal as a percentage of a positive peak amplitude of the analog signal and second reference signal as a percentage of a negative peak amplitude of the analog signal, and an output format generator to output a digital signal in response to a comparison of the analog signal to the first reference signal and the second reference signal.