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:
Feb. 24, 1976
Filed:
Sep. 29, 1972
Applicant:
Inventor:
Pierre Desarzens, Bienne, CH;
Assignee:
Omega, Louis Brandt & Frere S.A., Bienne, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G04B / ;
U.S. Cl.
CPC ...
73-6 ;
Abstract
A method and apparatus for detection whether an input signal is periodic or aperiodic, wherein reference pulses at a constant frequency are added during a first interval determined by a number of cycles of the input signal and reference pulses at the same frequency are substracted during a second interval determined by an equal number of cycles of the input signal. If the input signal is periodic, the counting result is zero or nearly zero since the counting intervals have been of equal duration. If the input signal is aperiodic, the counting result differs from zero because the counting intervals have not been of equal duration.