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. 20, 2002
Filed:
Apr. 27, 2000
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Abstract
In a capacitive element driving apparatus which changes, by an output circuit, the electrode potentials of the electrostatic capacitive element of a transducer forming a capacitive load such as a piezoelectric member to drive and control the electrostatic capacitive element, when the electrode potentials start changing and simultaneously change in the same direction by the function of a same-direction detection circuit, the potentials to be applied to the electrodes are controlled with a high impedance. While a portion between the electrodes of the electrostatic capacitive element of the transducer is being charged or discharged, the potentials to be applied are controlled with a low impedance lower than the high impedance.