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:
Jul. 13, 1999
Filed:
Mar. 27, 1995
Applicant:
Inventor:
Ryunosuke Iijima, Ebina, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
348356 ; 348351 ; 396 79 ; 396 96 ;
Abstract
An automatic focus adjusting apparatus comprises: a focus detecting circuit for detecting a focusing state and generating a signal according to the focusing state; a speed control circuit to switch a focus adjusting speed to a plurality of stages on the basis of an output of the focus detecting circuit; a depth detecting circuit to detect a depth of field; and a control circuit to change a threshold value of a speed switching point in the speed control circuit on the basis of an output of the depth detecting circuit.