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    • 1. 发明授权
    • 디스크 드라이브의 자유 낙하 검출 방법 및 그 장치
    • 디스크드라이브의자유낙하검출방법및그장치
    • KR100630762B1
    • 2006-10-04
    • KR1020050078913
    • 2005-08-26
    • 삼성전자주식회사
    • 스타로두브체프드미트리이태훈지병걸정광조
    • G11B20/10G11B20/18
    • A free fall detection method of a disc drive and an apparatus therefor are provided to prevent a detection error by an external force temporarily generated in the drive when the drive freely falls by accurately detecting whether the drive freely falls by using the first threshold value for detecting a free fall start time and the second threshold value for detecting whether the free fall of the drive is continued. An acceleration measuring unit(400) measures the instantaneous acceleration of a disc drive. If the instantaneous acceleration measured in the acceleration measuring unit(400) is greater than the first threshold value, a free fall start detecting unit(410) outputs a free fall monitoring signal. If the free fall monitoring signal is received from the free fall start detecting unit(410) and the acceleration measured in the acceleration measuring unit(400) is continuously maintained as the second threshold value or more during a certain time, a free fall progress detecting unit(420) judges that the disc drive freely falls.
    • 磁盘驱动器的自由跌落检测方法及其装置被设置用于通过利用第一检测阈值精确地检测驱动器是否自由下落来防止当驱动器自由落下时由驱动器中临时产生的外力引起的检测错误 自由下落开始时间和用于检测是否继续驱动器的自由下落的第二阈值。 加速度测量单元(400)测量磁盘驱动器的瞬时加速度。 如果在加速度测量单元(400)中测得的瞬时加速度大于第一阈值,则自由落体开始检测单元(410)输出自由落体监测信号。 如果从自由落体开始检测单元(410)接收到自由落体监测信号并且在加速度测量单元(400)中测量的加速度在特定时间内连续保持为第二阈值或更大,则自由落体进展检测 单元(420)判断磁盘驱动器自由下落。