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. 19, 1991
Filed:
Dec. 30, 1988
Applicant:
Inventor:
Isaac Richman, Newport Beach, CA (US);
Assignee:
McDonnell Douglas Corporation, Long Beach, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06G / ;
U.S. Cl.
CPC ...
364581 ; 364576 ; 364574 ; 25023114 ; 2502 / ;
Abstract
Disclosed is an apparatus and method for the measurement of weak signals in an output device, including weak signals in the presence of obscuring noise, by pseudorandom sampling of a repetitive alternating potential waveform and digitally extracting the fundamental hormonic to reconstruct an accurate transfer function for the device being measured.
Richman, Isaac. (1991). Digital synchronous detector sampling (U.S. Patent No. 4994991). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4994991
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile