Recording medium reproducing apparatus and method

A reproducing method, comprising:

• inputting a code number;
• reproducing first control information in an info file for controlling reproduction of all of a plurality of playlists recorded on a recording medium;
• reproducing second control information in a playlist for controlling reproduction of the playlist;
• and
• permitting the reproduction of data, even when the first control information and the second control information are both active, if the inputted code number is consistent with a personal identification number (PIN) which is recorded in the info file, without requiring another input of the code number.

A recording medium recorded with a computer readable program for causing a computer to execute a reproducing method, the method comprising:

• inputting a code number;
• reproducing first control information in an info file for controlling reproduction of all of a plurality of playlists recorded on a recording medium;
• reproducing second control information in a playlist for controlling reproduction of the playlist;
• and
• permitting the reproduction of data, even when the first control information and the second control information are both active, if the inputted code number is consistent with a personal identification number (PIN) which is recorded in the info file, without requiring another input of the code number.

A system for processing information, the system comprising:

• a processor operable to execute instructions;
• and
• instructions for causing the processor to execute an reproducing method, the method including:
• inputting a code number;
• reproducing first control information in an info file for controlling reproduction of all of a plurality of playlists recorded on a recording medium;
• reproducing second control information in a playlist for controlling reproduction of the playlist;
• and
• permitting the reproduction of data, even when the first control information and the second control information are both active, if the inputted code number is consistent with a personal identification number (PIN) which is recorded in the info file, without requiring another input of the code number.