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:
Nov. 12, 2019
Filed:
Mar. 13, 2017
Applicant:
Rohm Co., Ltd., Kyoto, JP;
Inventor:
Masato Nishinouchi, Kyoto, JP;
Assignee:
Rohm Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 7/09 (2006.01); H02P 7/025 (2016.01); H02P 25/034 (2016.01);
U.S. Cl.
CPC ...
G02B 7/09 (2013.01); H02P 7/025 (2016.02); H02P 25/034 (2016.02);
Abstract
A drive circuit, which is mounted on an electronic apparatus having a voice coil motor and drives the voice coil motor, includes: an interface circuit configured to receive a first signal indicating a target position of the voice coil motor and a second signal related to a posture of the electronic apparatus; a control circuit configured to generate a current command value of a drive current in response to the first signal and the second signal; and a current driver configured to generate the drive current in response to the current command value and supply the drive current to the voice coil motor.