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. 14, 1992
Filed:
Mar. 09, 1989
Applicant:
Inventor:
Majed M Hamdan, North Olmsted, OH (US);
Assignee:
Allied-Signal Inc., Morristown, NJ (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395725 ; 36442601 ;
Abstract
A method and apparatus for processing two high speed signals through a single high speed input terminal of a microprocessor uses a multiplexing circuit connected between the signal conditioners from the wheel speed sensor and the microprocessor. The multiplexing circuit converts the square wave signal as generated by the signal conditioning circuits into a series of interrupts. The multiplexing circuit includes three hardware semaphores or flip-flops which are set by the interrupts generated from wheel speed signals. The semaphores or flip-flops are reset by the microprocessor.