Patent ID: 6597640
Filing Date: 2003-07-22
Classification: G11B

Abstract:
A disc device comprising:an optical pickup feed mechanism for effecting reciprocal movement of an optical pickup between the inner peripheral side and the outer peripheral side of a disc in the radial direction thereof, said optical pickup feed mechanism including a threaded shaft for screwing engagement with a thread portion formed on an optical pickup main body for effecting the reciprocal movement of the optical pickup main body in the radial direction of the disc while supporting the optical pickup main body, a rotating drive source for causing the reciprocal movement of the optical pickup main body, and a rotation transmission gear fixed to an end of the threaded shaft for transmitting the rotation of the rotating drive source to the threaded shaft; a biting determination means for determining the biting of the optical pickup main body at an end of the threaded shaft; and a biting removal means for rotating the rotating drive source in such a direction as to remove the biting of the optical pickup main body when said biting determination means determines that the optical pickup main body is bitten.