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:
Aug. 19, 1986
Filed:
Aug. 26, 1983
Applicant:
Inventor:
John A Geen, Berkshire, GB;
Assignee:
British Aerospace Public Limited Company, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01C / ;
U.S. Cl.
CPC ...
356350 ;
Abstract
A ring laser gyroscope has noise reduction means which removes or compensates for errors which result when a bias or dither is imparted to the gyroscope in order to reduce or avoid lock-in. In one embodiment the gyroscope has processing means (25) including two photodiodes (26,27) which are exposed to the fringe pattern of the gyroscope output beams and which, by the use of a Norton input operational amplifier (30) configured as an electronic integrator, produce a signal which is algebraically summed with the uncorrected gyroscope output signal to produce a corrected gyroscope output signal.