Information processing method, information processing apparatus, information processing system, multimedia presentation system, file update method, multimedia presentation method, and storage medium

An information processing apparatus comprising:

• storage means for recording material files and scenario files for controlling the material files;
• file update means for updating the file in said storage means;
• and
• control means for controlling, when the predetermined scenario file in said storage means is processed to be nonreadable by said file update means, said file update means to process the unnecessary material files in said storage means to be nonreadable.

A presentation system comprising:

• means for editing material files;
• means for forming a scenario file to control the material files;
• storage means for recording the material files and the scenario file;
• reproduction means for reproducing data of the material files on the basis of the scenario file in said storage means;
• and
• control means for processing the unnecessary material files in said storage means to be nonreadable, the unnecessary material files concerning the predetermined scenario file in said storage means processed to be nonreadable.

A multimedia presentation method comprising:

• an editing step of editing a multimedia material file including image data, voice data or character data, and a scenario file for controlling the multimedia material file;
• a storage step of recording the multimedia material file and the scenario file;
• a reproduction step of reproducing data of the multimedia material file on the basis of the scenario file stored in said storage step;
• and
• a processing step of processing, when the predetermined scenario file in storage means is processed to be nonreadable, the unnecessary material files in the storage means to be nonreadable.

An information processing method, comprising:

• a deletion designation step of designating, in a storage medium which stores a main file executed by an application program and a sub file related to the main file and used when the main file is executed, the file to be deleted, so as to control various file operations;
• and
• a deletion step of deleting the file designated in said deletion designation step,
• wherein said deletion step includes a control step of performing, when the main file designated in said deletion designation step is deleted, controlling to delete the sub file used by the main file and not used by another main file remaining in the storage medium.