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:
Jan. 03, 1989
Filed:
Dec. 14, 1987
Koushun Sun, Elgin, IL (US);
Sam Albanese, Chicago, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
For use with a reluctance sensor, a digital detector (200) accurately detects, in the presence of noise, a valid transition in the sensor's output signal (10, 202). A first flip-flop (216) is used for sensing a positive going edge (310, 334A) in the sensor signal and for providing an inhibit pulse (312, 332, 336) of a first predetermined time period in response thereto. A second flip-flop (218) responds to the end of the inhibit pulse, if the sensor signal is in the high logic state, by sensing a subsequent negative going edge (318, 334B) in the sensor signal. If the negative going edge is sensed, the digital detector indicates that a valid transition in the sensor signal occurred.