CONTROL DEVICE, STORAGE DEVICE, AND CONTROL METHOD

摘要

A control device, a storage device and a control method are provided to prevent damage to a storage medium or head or protect data recorded in a disc by retracting the head is pulled back to the retracted position regardless of the falling distance. A control device for controlling the movement of a head mounted in a storage device based on the signal outputted from an acceleration sensor(170) includes a head movement control part moving the head to a target position on a storage medium; and a head retraction controller pulling the head back to the retracted position by using the elapsed time from the point of time when detecting the falling or impact for the first time, based on threshold value information including a first threshold value indicating an intensity reference of signal which is outputted from the acceleration sensor in falling and a second threshold value indicating an intensity reference of signal which is outputted from the acceleration sensor in case of getting an impact, and signal outputted from the acceleration sensor.