A publisher configured to record data on a medium by a first media drive and a second media drive and including a publisher controller and a publisher storage, the publisher controller being configured to detect a type of a medium on which data is recordable by the first media drive and detect a type of a medium on which data is recordable by the second media drive, the type of the medium on which data is recordable by the first media drive and the second media drive being defined as a recording target type, the type of a medium on which data is recordable by only any one of the first media drive and the second media drive being defined as a non-recording target type, and the publisher being configured to store target type information representing the recording target type and the non-recording target type.

A publisher configured to record data on a medium by a first media drive and a second media drive and including a publisher controller and a publisher storage, the publisher controller being configured to detect a type of a medium on which data is recordable by the first media drive and detect a type of a medium on which data is recordable by the second media drive, the type of the medium on which data is recordable by the first media drive and the second media drive being defined as a recording target type, the type of a medium on which data is recordable by only any one of the first media drive and the second media drive being defined as a non-recording target type, and the publisher being configured to store target type information representing the recording target type and the non-recording target type.

Provided is a disc storage apparatus that includes a case including an opening on an upper surface of the case and capable of storing N rows of stacked M disc-shaped recording media (N and M each indicate a positive integer of two or greater), a tray cover that slides from a rear end of the case and cover the opening, and a locking mechanism that locks a state of the opening being covered.

Provided is a disc storage apparatus that includes a case including an opening on an upper surface of the case and capable of storing N rows of stacked M disc-shaped recording media (N and M each indicate a positive integer of two or greater), a tray cover that slides from a rear end of the case and cover the opening, and a locking mechanism that locks a state of the opening being covered.

A waterproof module includes a housing, an optical disc drive and a seal member. The housing has an outer surface, an opening and an inner surface defining a receiving space. The opening penetrates the outer surface and communicates with the receiving space. The optical disc drive includes a disc tray and a body disposed in the receiving space. The disc tray includes a tray body and a cover plate disposed at one end of the tray body. The tray body is slidable relative to the body between a retracted position and an ejected position. The seal member includes a connecting portion and a resilient portion. The connecting portion is stacked on the cover plate. The resilient portion surrounds the connecting portion. When the disc tray moves from the ejected position to the retracted position, the resilient portion presses against the outer surface and seals the opening.

A disc storage apparatus includes: a case including an opening on an upper surface of the case and capable of storing N rows of stacked M disc-shaped recording media (N and M each indicate a positive integer of two or greater); a tray cover configured to slide from a rear end of the case and cover the opening; and a locking mechanism configured to lock a state of the opening being covered.

A disc storage apparatus includes: a case including an opening on an upper surface of the case and capable of storing N rows of stacked M disc-shaped recording media (N and M each indicate a positive integer of two or greater); a tray cover configured to slide from a rear end of the case and cover the opening; and a locking mechanism configured to lock a state of the opening being covered.

A waterproof module includes a housing, an optical disc drive and a seal member. The housing has an outer surface, an opening and an inner surface defining a receiving space. The opening penetrates the outer surface and communicates with the receiving space. The optical disc drive includes a disc tray and a body disposed in the receiving space. The disc tray includes a tray body and a cover plate disposed at one end of the tray body. The tray body is slidable relative to the body between a retracted position and an ejected position. The seal member includes a connecting portion and a resilient portion. The connecting portion is stacked on the cover plate. The resilient portion surrounds the connecting portion. When the disc tray moves from the ejected position to the retracted position, the resilient portion presses against the outer surface and seals the opening.

A disc grabbing device including a disc grabbing body, a weight sensing unit and a counter is provided. The disc grabbing body is used for grabbing or unloading at least one disc. The weight sensing unit is disposed on the disc grabbing body for sensing a weight of the at least one disc grabbed on the disc grabbing body. The counter is connected to the weight sensing unit used for obtaining a disc quantity of the discs grabbed on the disc grabbing body according to the weight.

A disc grabbing device including a disc grabbing body, a weight sensing unit and a counter is provided. The disc grabbing body is used for grabbing or unloading at least one disc. The weight sensing unit is disposed on the disc grabbing body for sensing a weight of the at least one disc grabbed on the disc grabbing body. The counter is connected to the weight sensing unit used for obtaining a disc quantity of the discs grabbed on the disc grabbing body according to the weight.