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. 27, 1989
Filed:
Feb. 03, 1988
Applicant:
Inventors:
Toshio Murakami, Yokohama, JP;
Takashi Azumi, Yokohama, JP;
Hiroshi Sakurai, Kamakura, JP;
Takesuke Maruyama, Yokohama, JP;
Yoshihiro Todaka, Yokohama, JP;
Assignees:
Hitachi, Ltd., both of, JP;
Hitachi Video Engineering Incorp., both of, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350429 ; 354404 ; 358227 ;
Abstract
An automatic focusing apparatus for use in a video camera and the like wherein one optical element other than a focusing lens means of an optical system is moved for focusing in the in-focus direction while being vibrated slightly by means of a motor capable of being driven by pulses.