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System for driving actuator

A technology of actuators and drivers, applied in the field of actuator systems, can solve problems such as system performance degradation and resolution degradation

Pending Publication Date: 2022-05-13
LX SEMICON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the resolution of OIS can vary depending on the actuator, and a decrease in resolution can manifest as a decrease in system performance

Method used

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Examples

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Embodiment Construction

[0013] Reference will now be made in detail to the exemplary embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0014] In the case of using "including", "having" and "comprising" described in this specification, unless "only -" is used, another part may be added. The terms of a singular form may include a plural form unless mentioned to the contrary.

[0015] It will be understood that although the terms "first", "second", etc. are used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present disclosure.

[0016] The term "at least ...

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PUM

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Abstract

The invention relates to a system for driving an actuator. A system for driving an actuator capable of providing a constant resolution regardless of the type of actuator according to an aspect of the present invention comprises: an actuator driving circuit configured to generate a driving current for operating the actuator and output the generated driving current to the operating actuator; a current sensing unit configured to sense a current operating the actuator and generate a first sensing signal; and a gain adjustment unit configured to calculate a gain based on a first maximum driving current range of the operating actuator and a second maximum driving current range of the reference actuator and to change the first sensing signal to a second sensing signal based on the gain. A signal generated based on the second sensing signal is input to an actuator driving circuit.

Description

technical field [0001] The present disclosure relates to a system for driving an actuator, and more particularly, to a system for driving an actuator capable of compensating for shake. Background technique [0002] An electronic device embedded with a camera module may include an optical image stabilizer (OIS) to prevent shaking. OIS detects shaking and moves the lens embedded in the camera module to prevent the image from shaking due to that shaking. [0003] The OIS may use an actuator to move the lens, and the current range for moving the lens the same distance may vary depending on the actuator. Therefore, the resolution of the OIS may vary depending on the actuator, and a decrease in resolution may manifest as a decrease in system performance. Contents of the invention [0004] The present disclosure is designed to solve the above-mentioned problems and aims to provide a system for driving an actuator capable of providing constant resolution regardless of the type o...

Claims

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Application Information

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IPC IPC(8): H04N5/232
CPCH04N23/681H04N23/685G02B27/646G03B2205/0084G03B2205/0007G03B5/00H04N23/54H04N23/55H04N23/6812H04N23/687G03B2205/0015G03B2205/0053G01R7/00G01R19/0038G05F1/00H02P25/034G03B2205/0069
Inventor 郑炯吉金奎镐崔湖烈朴畅仁
Owner LX SEMICON CO LTD
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