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:
Mar. 29, 1988
Filed:
Feb. 18, 1986
Theodore D Klein, Waconia, MN (US);
Michael R Oran, Chaska, MN (US);
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Abstract
Circuitry for the validation of repetitive signals including input/output circuitry providing information regarding signals received that is connected to a progammable microprocessor, a read only memory and random access memory. The microprocessor is programmed so the circuitry determines the receipt of an input signal at any one of several signal inputs. When a first signal is received at one of the signal inputs a 'lock-out' time interval is provided during which another signal cannot be received at any signal input. This is followed by a 'window' time interval during which another input signal can be received at the signal input receiving the first signal. A 'lock-out' and a 'window' time interval are provided for each signal received at the signal input during a 'window' time period at which the first input signal was received. Such signals are counted until a predetermined count is reached thereby establishing the received signals as valid signals. A new count is required is a 'window' time interval is provided and a signal is not received at the proper input during such time interval.