Patent ID: 6785199
Filing Date: 2004-08-31
Classification: G11B

Abstract:
A drive device comprising:a) a feed mechanism that causes a control object to move in order to control the positioning of said control object, b) a motor that serves as the drive source of said feed mechanism, and a control means that controls said motor, said control means including a restart drive detection element that determines whether said drive device has been restarted, c) wherein said control means further comprises an operation history memory unit that stores operation history of said motor, and a command selection unit that selects control commands and outputs them to said motor based on information stored in said operation history memory unit, and d) wherein said operation history memory unit further comprises information from said restart drive detection element about whether said drive device has been restarted, and wherein said command selection unit selects the control command to intermittently operate said motor when it is determined that said drive device has been restarted.