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:
Apr. 17, 2018
Filed:
Apr. 21, 2016
Dong Woon Anatech Co., Ltd., Seoul, KR;
DONG WOON ANATECH CO., LTD., Seoul, KR;
Abstract
An apparatus for driving a voice coil actuator of a camera and a method thereof are provided. The driving apparatus performs input shaping based on a resonance frequency of a voice coil actuator and damping of vibration in the voice coil actuator to generate a control signal using a shaping signal as an initial input from an unshaped control signal, and thereby drives the voice coil actuator using the control signal subjected to input shaping. The shaping signal is provided to remove the resonance of the voice coil actuator, and may be a pure shaping signal, such as a multi-step shaping signal or a toggle shaping signal, or a convoluted shaping signal obtained by convoluting such pure shaping signals. The driving apparatus may significantly reduce residual vibration and may enhance an auto-focus function of the voice actuator using input shaping control based on damping.