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:
Apr. 04, 1995
Filed:
Sep. 29, 1993
Applicant:
Inventor:
Neal R Butler, Acton, MA (US);
Assignee:
Loral Infrared & Imaging Systems, Inc., Lexington, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06J / ; G06F / ;
U.S. Cl.
CPC ...
364604 ; 36472807 ;
Abstract
Autocorrelation processing finds a series of equally spaced pulses and noise. Pulses that are very narrow with inter-pulsed durations of several hundred times the width of the pulse are processed. A threshold detector receives an input from a sensor, the sensor providing the pulses. The threshold detector enables a flip flop which receives the output of a free running counter. The output of the free running counter is sent to a buffer such as, for example, a first in, first out circular buffer. The events held in the buffer are processed later for further autocorrelation processing.