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. 18, 1992
Filed:
Feb. 20, 1990
Applicant:
Inventors:
Xiaoyang Lee, New York, NY (US);
Glenn M Boles, Fords, NJ (US);
Assignee:
Lunayach Communications Consultants, Arlington, VA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
324 / ; 324 / ; 324 / ; 377 19 ; 455 36 ;
Abstract
The disclosure is of a system for measuring the frequency of an audio signal by converting the signal to a rectangular wave, counting the number of oscillator pulses which can be generated during one cycle of said wave and decoding the number of pulses to obtain the frequency of the audio signal.