A DVD navigator based on a vehicle-mounted terminal is disclosed. The DVD navigator includes: a menu panel module, configured to generate a first level in response to reception of an unload instruction; and a quick-unload module, configured to acquire the first level in a sleep state of the DVD navigator and process the first level to generate a second level and a pulse signal so as to control the DVD navigator to quickly unload a disc according to the second level in the sleep state. By the aforesaid way, the present disclosure can effectively reduce the unload time of the DVD navigator by controlling the DVD navigator to quickly unload a disc in the sleep state after receiving the unload instruction.

The disc device that includes a disc tray which stores a plurality of stacked discs, a tray carrier which transports the disc tray, and a disc selector which supplies one disc of the plurality of discs stacked on the disc tray to a drive unit. The disc selector includes a disc selector spindle that supports the plurality of discs, a disc press on which an upper surface of an uppermost disc of the plurality of discs supported by the disc selector spindle abuts, a displacement amount detection mechanism that detects a displacement amount of the disc press displaced according to thicknesses of the plurality of supported discs, and a thickness detection unit that detects a thickness of each of the plurality of discs based on the detected displacement amount of the disc press.

The disc device that includes a disc tray which stores a plurality of stacked discs, a tray carrier which transports the disc tray, and a disc selector which supplies one disc of the plurality of discs stacked on the disc tray to a drive unit. The disc selector includes a disc selector spindle that supports the plurality of discs, a disc press on which an upper surface of an uppermost disc of the plurality of discs supported by the disc selector spindle abuts, a displacement amount detection mechanism that detects a displacement amount of the disc press displaced according to thicknesses of the plurality of supported discs, and a thickness detection unit that detects a thickness of each of the plurality of discs based on the detected displacement amount of the disc press.

The disc device that includes a disc tray which stores a plurality of stacked discs, a tray carrier which transports the disc tray, and a disc selector which supplies one disc of the plurality of discs stacked on the disc tray to a drive unit. The disc selector includes a disc selector spindle that supports the plurality of discs, a disc press on which an upper surface of an uppermost disc of the plurality of discs supported by the disc selector spindle abuts, a displacement amount detection mechanism that detects a displacement amount of the disc press displaced according to thicknesses of the plurality of supported discs, and a thickness detection unit that detects a thickness of each of the plurality of discs based on the detected displacement amount of the disc press.

The disc device that includes a disc tray which stores a plurality of stacked discs, a tray carrier which transports the disc tray, and a disc selector which supplies one disc of the plurality of discs stacked on the disc tray to a drive unit. The disc selector includes a disc selector spindle that supports the plurality of discs, a disc press on which an upper surface of an uppermost disc of the plurality of discs supported by the disc selector spindle abuts, a displacement amount detection mechanism that detects a displacement amount of the disc press displaced according to thicknesses of the plurality of supported discs, and a thickness detection unit that detects a thickness of each of the plurality of discs based on the detected displacement amount of the disc press.

A calibration system includes a moveable arm configured for movement within an optical disc storage system. A disc kicker device includes a stop portion, an actuator and an actuator tip that contacts an optical disc. The disc kicker device is connected to the moveable arm. The calibration system: determines an operation state based on a stop position for the actuator tip in response to an applied torque to the disc kicker device, and performs alignment of the actuator tip with the optical disc.

A calibration system includes a moveable arm configured for movement within an optical disc storage system. A disc kicker device includes a stop portion, an actuator and an actuator tip that contacts an optical disc. The disc kicker device is connected to the moveable arm. The calibration system: determines an operation state based on a stop position for the actuator tip in response to an applied torque to the disc kicker device, and performs alignment of the actuator tip with the optical disc.

An apparatus includes a motor configured to drive a driving element within a housing. A pivoting element on a shaft is connected to the housing. The pivoting element is connected to a moveable jaw device and configured to force the moveable jaw device at any given moment towards or away from a face of a storage disc, as the pivoting element pivots about a first axis. A fixed jaw device is connected to the housing. The moveable jaw device and the fixed jaw device form a gripper device configured to clamp a particular portion of opposite first and second surfaces of a storage disc.

A calibration system includes a moveable arm configured for movement within an optical disc storage system. A disc kicker device includes an actuator and an actuator tip that contacts an optical disc. The disc kicker device is connected to the moveable arm. The calibration system performs a calibration operation to calibrate the actuator at the actuator tip to correct displacement error.

There is provided an optical disc drive that can guide the center of an optical disc to the position of a spindle motor, while allowing the number of components to be reduced. A base frame includes a stopper portion that comes into contact with an outer edge of the optical disc having reached the position of a spindle motor and that restricts backward movement of the optical disc. A switch arm includes a contact portion located on a side opposite to the stopper portion across the optical disc having reached the position of the spindle motor, and the switch arm uses the contact portion to push the optical disc toward the stopper portion.