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:
Aug. 14, 2018
Filed:
Aug. 11, 2016
Applicant:
Hiroyuki Takahashi, Miyagi, JP;
Inventor:
Hiroyuki Takahashi, Miyagi, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B 26/08 (2006.01); G02B 26/10 (2006.01); H04N 9/31 (2006.01); H02N 2/00 (2006.01); G09G 3/02 (2006.01);
U.S. Cl.
CPC ...
G02B 26/0858 (2013.01); G02B 26/08 (2013.01); G02B 26/101 (2013.01); G09G 3/025 (2013.01); H02N 2/0095 (2013.01); H04N 9/3161 (2013.01); G09G 3/02 (2013.01); G09G 2330/028 (2013.01); G09G 2340/0464 (2013.01);
Abstract
A drive system includes an actuator, a waveform generating unit, a driving amplifier, and a bias amplifier. The actuator includes a drive unit. The waveform generating unit generates a voltage waveform for driving the drive unit. The driving amplifier amplifies the voltage waveform so as to apply a voltage to the drive unit. The bias amplifier applies a bias voltage to the drive unit. The driving amplifier and the bias amplifier are coupled to a shared power supply and the ground. The output voltage of the bias amplifier is higher than the minimum output voltage of the driving amplifier.