Abstract: An apparatus and a method of ejecting an optical disc for an optical drive. First of all, a first voltage to a tray motor for moving a tray positioned at a first position inside the optical drive is provided. Next, a time required for moving the tray from a first position to a second position is measured, wherein the second position is positioned between the first position and a complete-ejection position. After that, a second voltage according to the time is determined. Lastly, the second voltage to the tray motor for moving the tray to the complete-ejection position is provided.

Abstract: An apparatus and a method of ejecting an optical disc for an optical drive. First of all, a first voltage to a tray motor for moving a tray positioned at a first position inside the optical drive is provided. Next, a time required for moving the tray from a first position to a second position is measured, wherein the second position is positioned between the first position and a complete-ejection position. After that, a second voltage according to the time is determined. Lastly, the second voltage to the tray motor for moving the tray to the complete-ejection position is provided.

Abstract: A clamping device with variable clamping force of an optical disk drive is disclosed. The main structure consists of a base, a resilient body with restoring property, an annulus magnet (or an annulus yoke) which can exert attraction force to a turntable for clamping disk, and a linking member which can change height of the annulus magnet (or the annulus yoke) relative to base according to the centrifugal force induced by variation of rotational speed of the optical disk drive. The centrifugal force is proportional to square of angular velocity such that the gap between the annulus magnet and the annulus yoke is accordingly adjustable. Variable clamping force is thus achieved by variation of the gap.

Abstract: A clamping device with variable clamping force of an optical disk drive is disclosed. The main structure consists of a base, a resilient body with restoring property, an annulus magnet (or an annulus yoke) which can exert attraction force to a turntable for clamping disk, and a linking member which can change height of the annulus magnet (or the annulus yoke) relative to base according to the centrifugal force induced by variation of rotational speed of the optical disk drive. The centrifugal force is proportional to square of angular velocity such that the gap between the annulus magnet and the annulus yoke is accordingly adjustable. Variable clamping force is thus achieved by variation of the gap.

Abstract: A loading tray for optical disk drive in upright position is disclosed. A disk-supporting surface and a disk-contacting surface is designed on the tray as a single component. The disk-supporting surface is an upright slanting surface or a curved surface. Thereby, with the help of the special shape designed on the tray surface, the weight of a disk can be automatically guided to be as a pushing force for mounting the optical disk toward the disk contacting surface so that the disk can be attached tightly on the tray free of dropping out. The loading device can accommodate either thin or thick disk conformed to the Red Book of CD. The utility of the present design make a disk loaded more efficiently and reduce the possibility of scratching or damaging the data surface of the disk.

Abstract: An impact absorber of a gears-transmission apparatus is disclosed. A gear section in the system is consisted of two rotary units, which are rotating with each other dependently. An elastic element is mounted between these two rotary units so that the mechanism is able to restore to the original position after the external torque being released. Thereby, under the condition without increasing the room available for mechanism design, the transmission apparatus possesses nice performance as a rubber belt for impact buffer from abrupt braking, instantaneous accelerating and collision . . . etc. Therefore, damage to the gear transmission system is effectively prevented so as the whole driving movement is smoother and the noise from collision of the components are also reduced.