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:
Jun. 29, 1999
Filed:
Oct. 07, 1993
Applicant:
Inventors:
Jean Francois Depatie, Albion, NY (US);
J Kelly Lee, Rochester, NY (US);
Allan MacGregor Waugh, Rochester, NY (US);
James Joseph Parker, Jr, Hamlin, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05B / ;
U.S. Cl.
CPC ...
318685 ;
Abstract
A device for controlling a stepper motor that drives a plurality of shutter blades. The movement and position of the movement of the rotor of the stepper motor is monitored to determine when the next step of the stepper motor should be stepped so that the rotation of the rotor will be known to cause the shutter blades to form the correct aperture size. The device may also be used to drive an automatic focusing mechanism and/or zoom.