Lens AF drive control method

There is disclosed a lens AF driving control method that changes a driving current input to a driving element (VCM) for driving the lens in order to move the lens in the optical axis direction. The method comprises the step of reducing the value of the drive current input to the driving element from...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HYO JIN PARK, TAE HYUCK KIM, KYOUNG WON HYUN, BYONG ROK KIM, GYEONG BEOM SHIN, DONG WON KIM
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:There is disclosed a lens AF driving control method that changes a driving current input to a driving element (VCM) for driving the lens in order to move the lens in the optical axis direction. The method comprises the step of reducing the value of the drive current input to the driving element from the initial current value to an intermediate value larger than zero (0) when an event in which the state of the lens module including the lens is changed from the active mode to the standby mode occurs The target current value; the step of controlling the value of the drive current to maintain the intermediate target current value for a predetermined time period; and a step of reducing the value of the driving current to zero (0). In this case, the intermediate target current value has a value that is greater than the predetermined value of the preload current value of the lens module. 公开种镜头AF驱动控制方法,其改变为了使镜头沿光轴方向移动而向驱动所述镜头的驱动元件(VCM)输入的驱动电流。包括:当发生把包括所述镜头的镜头模块的状态从激活模式变更为待机模式的事件时,使输入所述驱动元件的驱动电流的值从初始电流值减小为大于零(0)的中间目标电