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. 08, 1994
Filed:
Jul. 22, 1992
Applicant:
Inventor:
Robert M Carangelo, Glastonbury, CT (US);
Assignee:
On-Line Technologies, Inc., East Hartford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F / ; H01J / ; G01B / ;
U.S. Cl.
CPC ...
330 10 ; 2502 / ; 330110 ; 356345 ;
Abstract
The method and apparatus of the invention effects compression of an analog electrical signal (e.g., representing an interferogram) by introducing into it a component that is a cubic function thereof, normally as a nonlinear negative signal in a feedback loop of an Op Amp. The compressed signal will most desirably be digitized and then digitally decompressed so as to produce a signal that emulates the original.