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:
Oct. 20, 1992
Filed:
Jan. 12, 1990
Applicant:
Inventor:
Tae Hahn, Chatsworth, CA (US);
Assignee:
Litton Systems, Inc., Beverly Hills, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B / ; H01S / ;
U.S. Cl.
CPC ...
356350 ; 372 94 ;
Abstract
A rotational sensing system for a split gain, multi-mode ring laser gyroscope is disclosed herein that can operate with a simple upright symmetric optics mechanism, where the required signal separation is performed fully electronically. In a preferred embodiment, signal separation circuitry is provided which performs a 180.degree. or .pi. radians phase shift to one of a set of heterodyned signals, A.sub.in, and B.sub.in, with respect to a second set of Split Gain frequency signals, A.sub.out and B.sub.out, in order to extract these Split Gain frequency signals.