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:
Jan. 03, 2012
Filed:
Dec. 19, 2008
Yasunori Nagata, Hashima, JP;
Yasuhisa Yamada, Ame-gun, JP;
Yasunori Nagata, Hashima, JP;
Yasuhisa Yamada, Ame-gun, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Sanyo Semiconductor Co., Ltd., Gunma, JP;
Abstract
In an image stabilization control circuit of an image-capturing device, a gyro-equalizer () is used to integrate an angular velocity signal corresponding to vibration, and determine a required magnitude of displacement of a lens. The gyro-equalizer () integrates the angular velocity signal from a gyro-sensor () using an integration circuit () (LPF), and converts the result into an angular signal. A direct-current component of the angular signal is removed using a centering circuit () (HPF). Excessive phase delay of the angular signal on a high-frequency side caused by a phase characteristic of the gyro-sensor () is compensated by a phase lead compensation circuit () composed of a high-boost filter, and the phase delay of the angular signal with respect to the angular velocity signal is brought nearer to 90° by an integration process.