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. 05, 2011
Filed:
May. 13, 2008
Ikuo Watanabe, Yokohama, JP;
Ikuo Watanabe, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An oscillator device includes an oscillation systemhaving a plurality of oscillators and a plurality of torsion springs, a supporting member for supporting the oscillation system, driving membersand, a signal output deviceand, and a drive control unit-and, wherein the driving member drives the oscillation systemso that the oscillator provides oscillation presented by an equation including the sum of a plurality of periodic functions, wherein the signal output device produces a signal corresponding to the displacement of the oscillator, and wherein the drive control unit controls the driving member based on an output signal of the signal output device and by use of a driving signal which is expressed by an equation including the sum of a plurality of periodic functions, the drive control unit including a driving signal generation circuitfor generating a driving signal using a trigonometric function table