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:
Mar. 02, 1976
Filed:
Oct. 25, 1974
Applicant:
Inventors:
Kenneth D Stumpf, Chelmsford, MA (US);
John T Watson, Lexington, MA (US);
Assignee:
Itek Corporation, Lexington, MA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
250578 ; 178-68 ;
Abstract
An improved system for detecting movement of an image formed by a reconnaissance optical system. A photodiode array is placed in the focal plane of the optical system to detect the image. The photodiode array is first read out at a time T into a shift register where the signal is stored. After passage of a time .DELTA.T the photodiode array is read out a second time. The first and second read out signals are then correlated to determine the amount of movement of the image between times T and T + .DELTA.T.