Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
VOICE COIL MOTOR ACTIVATION CONTROL METHOD AND APPARATUS, AND CAMERA MODULE
Document Type and Number:
WIPO Patent Application WO/2017/133219
Kind Code:
A1
Abstract:
A voice coil motor activation control method and apparatus and a camera module are provided. The method comprises: controlling a voice coil motor driver to output an activation current to a voice coil motor, wherein the activation current is the minimum electrical current required to control the voice coil motor to drive a lens assembly to move; according to an acquired current step change time and an acquired current step change value, controlling the voice coil motor driver to output a drive current to the voice coil motor until the voice coil motor drives the lens assembly to move to a target position. The drive current increases in a stepwise manner, wherein the starting current is the initial step value, the current step change period is the step length, and the current step change value is the current step height.

Inventors:
MU QIANLI (CN)
Application Number:
PCT/CN2016/095553
Publication Date:
August 10, 2017
Filing Date:
August 16, 2016
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ZTE CORP (CN)
International Classes:
H02P7/025; G02B7/09; G03B30/00
Foreign References:
CN102468803A2012-05-23
US20120063019A12012-03-15
CN104467612A2015-03-25
CN103391044A2013-11-13
CN103795320A2014-05-14
US20150116579A12015-04-30
Attorney, Agent or Firm:
AFD CHINA INTELLECTUAL PROPERTY LAW OFFICE (CN)
Download PDF: