Abstract: A portable apparatus includes an electronic device defining a locking slot and a positioning device for detachably attached to the electronic device. The positioning device includes a cover defining an opening and a through hole; a supporting member comprising a hook protruding from the through hole to insert in the locking slot to lock in the electronic device and a supporting portion protruding from the opening of the cover to support the electronic device; and a dampening member fixed to the supporting member in the cover.

Abstract: An optical disc drive includes a housing with a protrusion and a tray capable of sliding in and out of the housing. The tray includes a first surface, and a second surface opposite to the first surface. The first surface is partially recessed to form a receiving space for accommodating an optical disc. The second surface defines a channel, and forms a blocking portion at one end of the channel. The protrusion slides in the channel to guide the tray to slide in and out of the housing, and cooperates with the channel to prevent the tray from vibrating. When the tray is fully extended from the housing, the protrusion is located at the end of the channel forming the blocking portion, thus the protrusion is blocked by the blocking portion from sliding too far so that the tray is prevented from sliding off the housing.

Abstract: A portable apparatus includes an electronic device; and a fastening device detachably attached to the electronic device. The fastening device includes a cover comprising a hook for inserting in the electronic device; a pressing member capable of being movable locked and unlocked from the cover; a locking member fastened on the cover and engaged with the pressing member, and an activating member disposed on the cover for activating the pressing portion to unlock from the cover. The locking member includes an inserting portion for inserting into the locking slot to lock the hook in the electronic device.

Abstract: According to another aspect, an optical recording and/or reproducing apparatus includes a frame, a spindle motor, a pair of parallel guide rails, an optical pickup head, and a shield mounted on the guide rails. The shield extends a protection surface higher than a lens of the optical pickup head. The protection surface is in an optical disc region and lowers than the optical disc when the optical disc is supported on the spindle motor.

Abstract: A fastening device includes a cover, an actuating member rotatably attached on the cover, and a locking member disposed on the cover and engaging with the actuating member. The cover includes a hook capable of being locked and unlocked on an electronic device, and defines a through hole near the hook and the actuating member capable of rotating around a rotating center. The actuating member is locked on the cover while being pushed. The locking member including a locking portion capable of passing through the through hole and inserting into the electronic device to lock the hook on the electronic device and withdrawing from the through hole when the actuating member is pushed to rotate.

Abstract: A portable apparatus includes an electronic device defining a locking slot and a positioning device for detachably attached to the electronic device. The positioning device includes a cover defining an opening and a through hole; a supporting member comprising a hook protruding from the through hole to insert in the locking slot to lock in the electronic device and a supporting portion protruding from the opening of the cover to support the electronic device; and a dampening member fixed to the supporting member in the cover.

Abstract: A portable apparatus includes an electronic device; and a fastening device detachably attached to the electronic device. The fastening device includes a cover comprising a hook for inserting in the electronic device; a pressing member capable of being movable locked and unlocked from the cover; a locking member fastened on the cover and engaged with the pressing member, and an activating member disposed on the cover for activating the pressing portion to unlock from the cover. The locking member includes an inserting portion for inserting into the locking slot to lock the hook in the electronic device.

Abstract: According to another aspect, an optical recording and/or reproducing apparatus includes a frame, a spindle motor, a pair of parallel guide rails, an optical pickup head, and a shield mounted on the guide rails. The shield extends a protection surface higher than a lens of the optical pickup head. The protection surface is in an optical disc region and lowers than the optical disc when the optical disc is supported on the spindle motor.

Abstract: A safety ensuring device for a disc apparatus, which includes a lid and a spindle motor for rotating a disc, includes a first switch operable by the lid, a first controller electrically coupled to the first switch, a second switch simultaneously operable by the lid when activating the first switch, and a second controller electrically coupled to the second switch. The first controller is configured for receiving signals from the first switch and controls rotation of the spindle motor based on the received signals from the first switch. The second controller is configured for receiving signals from the second switch and controls the rotation of the spindle motor based on the received signals from the second switch. A disc apparatus utilizing the safety ensuring device is also disclosed.