Abstract: The disc protection casing includes a disc protection casing body having a disc receiving space therein. A disc holder, insertable into the interior of the disc protection casing body, has an elastic member formed at one end of the same for supporting a disc. When the disc holder is inserted into the casing body, a shoulder on the elastic member contacts a guide member in the casing body and the elastic member releases a disc supported thereby.

Abstract: The method for reproducing records for the optical recording medium detects and compensates for detrack, tilt and defocus, having advantages in that: (1) the magnitude and the direction of detrack, tilt and defocus can be detected from a difference signal (for example, a read channel 2 signal or a tracking error signal obtained by processing the read channel 2 signal) between optical reflecting signals detected at the header fields staggered on the basis of the tract center, and compensates for detrack, tilt and defocus, thereby preventing deterioration of data quality caused by detrack, tilt and defocus during a recording/reproducing operation and enabling the stable operation of the system; and (2) the focus servo is rapidly stabilized to enable real-time recording as well as the stable operation of the system.

Abstract: The disc protection casing includes a disc protection casing body having a disc receiving space therein. A disc holder, insertable into the interior of the disc protection casing body, has an elastic member formed at one end of the same for supporting a disc. When the disc holder is inserted into the casing body, a shoulder on the elastic member contacts a guide member in the casing body and the elastic member releases a disc supported thereby.

Abstract: The disc protection casing includes a disc protection casing body having a disc receiving space therein. A disc holder, insertable into the interior of the disc protection casing body, has an elastic member formed at one end of the same for supporting a disc. When the disc holder is inserted into the casing body, a shoulder on the elastic member contacts a guide member in the casing body and the elastic member releases a disc supported thereby.

Abstract: The disc protection casing includes a disc protection casing body having a disc receiving space therein. A disc holder, insertable into the interior of the disc protection casing body, has an elastic member formed at one end of the same for supporting a disc. When the disc holder is inserted into the casing body, a shoulder on the elastic member contacts a guide member in the casing body and the elastic member releases a disc supported thereby.

Abstract: The disc protection casing includes a disc protection casing body having a disc receiving space therein. A disc holder, insertable into the interior of the disc protection casing body, has an elastic member formed at one end of the same for supporting a disc. When the disc holder is inserted into the casing body, a shoulder on the elastic member contacts a guide member in the casing body and the elastic member releases a disc supported thereby.

Abstract: The method for reproducing records for the optical recording medium detects and compensates for detrack, tilt and defocus, having advantages in that: (1) the magnitude and the direction of detrack, tilt and defocus can be detected from a difference signal (for example, a read channel 2 signal or a tracking error signal obtained by processing the read channel 2 signal) between optical reflecting signals detected at the header fields staggered on the basis of the tract center, and compensates for detrack, tilt and defocus, thereby preventing deterioration of data quality caused by detrack, tilt and defocus during a recording/reproducing operation and enabling the stable operation of the system; and (2) the focus servo is rapidly stabilized to enable real-time recording as well as the stable operation of the system.

Abstract: The disc protection casing includes a disc protection casing body having a disc receiving space therein. A disc holder, insertable into the interior of the disc protection casing body, has an elastic member formed at one end of the same for supporting a disc. When the disc holder is inserted into the casing body, a shoulder on the elastic member contacts a guide member in the casing body and the elastic member releases a disc supported thereby.

Abstract: The disc protection casing includes a disc protection casing body having a disc receiving space therein. A disc holder, insertable into the interior of the disc protection casing body, has an elastic member formed at one end of the same for supporting a disc. When the disc holder is inserted into the casing body, a shoulder on the elastic member contacts a guide member in the casing body and the elastic member releases a disc supported thereby.

Abstract: The method for reproducing records for the optical recording medium detects and compensates for detrack, tilt and defocus, having advantages in that: (1) the magnitude and the direction of detrack, tilt and defocus can be detected from a difference signal (for example, a read channel 2 signal or a tracking error signal obtained by processing the read channel 2 signal) between optical reflecting signals detected at the header fields staggered on the basis of the tract center, and compensates for detrack, tilt and defocus, thereby preventing deterioration of data quality caused by detrack, tilt and defocus during a recording/reproducing operation and enabling the stable operation of the system; and (2) the focus servo is rapidly stabilized to enable real-time recording as well as the stable operation of the system.

Abstract: The disc protection casing includes a disc protection casing body having a disc receiving space therein. A disc holder, insertable into the interior of the disc protection casing body, has an elastic member formed at one end of the same for supporting a disc. When the disc holder is inserted into the casing body, a shoulder on the elastic member contacts a guide member in the casing body and the elastic member releases a disc supported thereby.

Abstract: The disc protection casing includes a disc protection casing body having a disc receiving space therein. A disc holder, insertable into the interior of the disc protection casing body, has an elastic member formed at one end of the same for supporting a disc. When the disc holder is inserted into the casing body, a shoulder on the elastic member contacts a guide member in the casing body and the elastic member releases a disc supported thereby.

Abstract: A disc cartridge that can simultaneously adjust a plurality of functional holes indicating whether or not the disc cartridge for receiving a double-sided disc has an opened or closed experience, and a disc driving apparatus for sensing the open and close state of the functional holes. In the disc cartridge, a body is provided with at least one of opened or closed experience confirming hole indicating whether or not the cartridge has an opened or closed experience. An opening and closing member allows a confirmation of an opened or closed state with respect to each face of the disc by an opening or closing of any one of the opened or closed experience confirming holes. Accordingly, the opened or closed state of the plurality of opened or closed experience confirming holes corresponding to the double-sided disc can be simultaneously adjusted, so that a user's convenience can be improved.

Abstract: A disc cartridge that can provide various driving modes for a disc received within the cartridge and allows a user to select the driving modes efficiently. A disc recording/reproducing method and apparatus employing the disc cartridge is disclosed. In the disc cartridge, a recording prohibition mode, a verification preceding recording mode and a direct recording mode are used. A mode selector can select each mode. The disc cartridge can provide various driving modes at a user's request and permits a user to select the driving modes efficiently by a single selector.

Abstract: A disc cartridge that is adapted to receive a small-size optical disc and is compatible with a large-size disc cartridge. In the disc cartridge, first and second shutters open and close an opening. A connector links the first shutters to the second shutters as any one of the first and second shutters is driven.

Abstract: The disc protection casing includes a casing body and a disk holder. The casing body has a receiving space therein and an access port formed in a first side of the casing body. The disk holder is insertable into an interior of the casing body via the access port, and one of the disk holder and the first side of the casing body is structured such that the disk holder is prevented from being incorrectly inserted into the casing body.

Abstract: A disc cartridge adapter that is capable of driving a different size of disc cartridges with the same disc driver. In the adapter, a driving power transfer device absorbs a difference in a shutter travel range having a different size from each other to drive shutters of a small-scale disc cartridge. A body is provided with a receiving space for receiving the small-scale cartridge. Accordingly, the small-scale cartridge can be driven with a disc driver for driving a large-scale cartridge.

Abstract: The disc protection casing includes a casing body and a disk holder. The casing body has a receiving space therein and an access port formed in a first side of the casing body. The disk holder is insertable into an interior of the casing body via the access port, and one of the disk holder and the first side of the casing body is structured such that the disk holder is prevented from being incorrectly inserted into the casing body.