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. 02, 2002
Filed:
Sep. 15, 2000
Applicant:
Inventors:
Assignee:
Fuji Photo Optical Co., Ltd., Saitama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 2/764 ;
U.S. Cl.
CPC ...
G02B 2/764 ;
Abstract
In an image stabilizing apparatus in which an actuator for pivoting a gimbal suspension is driven under PWM control by way of a driving circuit, the pulse width of waveform outputted from a CPU to the driving circuit is enhanced when the power voltage V in the driving circuit drops. The CPU reads out the power voltage V and enhances the pulse width of output waveform from W to W as the power voltage V decreases from its rated voltage V to a lower voltage V . The correction rate (W /W ) is set to the reciprocal (V /V ) of the drop rate of power voltage V , so as to yield an appropriate actuator driving power in response to the drop in power voltage V .