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. 09, 1998
Filed:
Nov. 22, 1994
Applicant:
Inventors:
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
348358 ; 348347 ; 348345 ; 2502017 ;
Abstract
Flange-back adjustment in a video camera using an inner focus lens assembly is done by detecting a position on the top of an actual zoom tracking curve and by detecting positions of end points of a variater on the basis of the top. Positions of the end points are presumed by a calculation from a position of the variater before arrival at an end. That is, by using the position of the variater in focus as a result of a movement of a focus lens from the top, and a ratio of a distance from the position of the variater in focus to one of the end points versus a distance from the position of the variater in focus to the other of the end points, positions of the end points are obtained.