Invention Grant
- Patent Title: Drive system, video device, image projection device, and drive control method
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Application No.: US15234626Application Date: 2016-08-11
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Publication No.: US10048490B2Publication Date: 2018-08-14
- Inventor: Hiroyuki Takahashi
- Applicant: Hiroyuki Takahashi
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2015-161414 20150818; JP2016-121943 20160620
- Main IPC: G02B26/08
- IPC: G02B26/08 ; G02B26/10 ; H04N9/31 ; H02N2/00 ; G09G3/02
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.
Public/Granted literature
- US20170052365A1 DRIVE SYSTEM, VIDEO DEVICE, IMAGE PROJECTION DEVICE, AND DRIVE CONTROL METHOD Public/Granted day:2017-02-23
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