Electricity: motive power systems – Reciprocating or oscillating motor – Energizing winding circuit control
Reexamination Certificate
2011-03-22
2011-03-22
Benson, Walter (Department: 2837)
Electricity: motive power systems
Reciprocating or oscillating motor
Energizing winding circuit control
C318S119000, C318S126000, C310S036000, C310S040500
Reexamination Certificate
active
07911160
ABSTRACT:
An oscillation device capable of generating a drive signal waveform with a sufficiently small number of harmonic components is provided. The oscillation device includes an oscillation system, a supporting unit configured to support the oscillation system, a drive unit configured to drive the oscillation system, and a drive control unit configured to control the drive unit by supplying a drive signal. The oscillation system includes a torsion spring and an oscillator. The drive control unit includes a drive-signal generating circuit configured to generate the drive signal using an address generator configured to generate an address to which a predetermined variable is added at a frequency higher than a frequency of the drive signal and using a trigonometric-function table indexed by an output of the address generator. The frequency of the drive signal is adjusted by adjusting the predetermined variable.
REFERENCES:
patent: 4317611 (1982-03-01), Petersen
patent: 4859846 (1989-08-01), Burrer
patent: 5047630 (1991-09-01), Confer et al.
patent: 6803843 (2004-10-01), Kato et al.
patent: 6961257 (2005-11-01), Garvreick et al.
patent: 7088070 (2006-08-01), Hagen
patent: 7474165 (2009-01-01), Kato et al.
patent: 2006/0152785 (2006-07-01), Yasuda et al.
patent: 2006/0243886 (2006-11-01), Nomura et al.
patent: 2007/0008600 (2007-01-01), Okada
patent: 57-8520 (1982-01-01), None
patent: 2-216583 (1990-08-01), None
patent: 9-230277 (1997-09-01), None
patent: 2005-292627 (2005-10-01), None
Benson Walter
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Luo David S
LandOfFree
Oscillation device, optical deflection apparatus, and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Oscillation device, optical deflection apparatus, and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oscillation device, optical deflection apparatus, and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2672903