Optical disc reproducing apparatus

An optical disc reproducing apparatus capable of accommodating a plurality of optical discs and reproducing information recorded on an optical disc in a specified accommodation location, comprising:

• track number obtaining means for obtaining the largest track number of information recorded on an optical disc;
• disc track memory means for storing the largest track number obtained by said track number obtaining means, associated with disc accommodation location information indicating disc accommodation locations of respective discs;
• accepting means for accepting an instruction to enter the track of information recorded on said optical disc in a program to specify a reproducing order of tracks;
• output means for referring to the largest track number stored in said disc track memory means, and outputting a notification indicating that a track cannot be entered in the program when the track number of said track specified in said instruction accepted by said accepting means is larger than the largest track number.

An optical disc reproducing apparatus capable of accommodating a plurality of discs and reproducing information recorded on an optical disc in a specified accommodation location, comprising:

• disc detecting means for detecting a type of an optical disc, and deciding whether or not said optical disc can be entered in a program;
• disc type memory means for storing detection results of said disc detecting means, associated with disc accommodation location information indicating disc accommodation locations of respective discs;
• accepting means for accepting an instruction to enter information recorded on said optical disc in a program specifying a reproducing order of information;
• and
• output means for referring to said detection results stored in said disc type memory means and outputting a notification indicating that said optical disc can be entered, if the information specified by the instruction accepted by said accepting means is information recorded on an optical disc enterable in said program.

An optical disc reproducing apparatus capable of reproducing information recorded on an optical disc, comprising:

• track number obtaining means for obtaining the largest track number of information recorded on an optical disc;
• disc track memory means for storing the largest track number obtained by said track number obtaining means;
• accepting means for accepting an instruction to enter the track of information recorded on said optical disc in a program to specify a reproducing order of tracks;
• output means for referring to the largest track number stored in said disc track memory means, and outputting a notification indicating that a track cannot be entered in the program when the track number of said track specified in said instruction accepted by said accepting means is larger than largest track number.