Title:
HEAD-PART DRIVING DEVICE OF INFORMATION DEVICE
Document Type and Number:
Japanese Patent JPS6087475
Kind Code:
A
Abstract:
PURPOSE:To obtain a device which supresses oscillation of a tracking actuator without providing a special detection system with relatively inexpensive constitution by inputting a driving signal of a transmitter to a compensating circuit, and setting an output signal of the said compensating circuit to an input signal of the tracking actuator. CONSTITUTION:When a compensating circuit 12 of a transfer function of a specific equation determined by proportional gain, which converts a driving current IM to a force FM, the driving current is outputted from a linear-motor driving control circuit 8 to a linear motor 7, and an optical head 6 is transmitted. Even if this transmitting quantity xM operates the oscillating system of a tracking actuator 3 as forced displacement, the relative position between the optical head 6 and the tracking actuator 3 can be controlled at a constant value, because the force FA operates the said tracking actuator 3 so that the relative position between the optical head 6 and the tracking actuator 3 will not oscillate by the compensating circuit 12 which sets the driving current as an input, and a tracking actuator driving circuit 11.
Inventors:
ITOU OSAMU
Application Number:
JP19488083A
Publication Date:
May 17, 1985
Filing Date:
October 18, 1983
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
G11B21/10; G11B7/085; G11B7/09; (IPC1-7): G11B7/085; G11B21/10
Domestic Patent References:
| JPS58143440A | 1983-08-26 |
Attorney, Agent or Firm:
Mamoru Takada (1 person outside)