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. 06, 2012
Filed:
Jul. 13, 2010
Hiroki Nagai, Aichi, JP;
Takeshi Kura, Ogaki, JP;
Tomonori Kamiya, Ichinomiya, JP;
Sanyo Semiconductor Co., Ltd., Gunma, JP;
Semiconductor Components Industries, LLC, Phoenix, AZ (US);
Abstract
A focus control circuit is installed in an image pickup apparatus including a lens, a driver element for adjusting the position of the lens, and a position detecting element for detecting the position of the lens. An equalizer included in the focus control circuit generates a drive signal used to adjust the position of the lens to a position to be set, based on a difference between the position of the lens identified by the position detecting element and the set position. When an instruction to vary a target position of the lens is received externally, a position setting unit included in the focus control circuit sets sequentially a plurality of positions in a range covering a new target position and a previous target position, to the equalizer before the new target position is reached from the previous target position.