Patent ID: 8639098

Claim:
An information processing apparatus comprising a controller for controlling data recording to an information recording medium, the controller updating a command storage file storing a command set in response to AV stream data to be recorded on the information recording medium and an index file storing at least index information, last update and time information, information indicating a person last updating data recorded on the information recording medium and information indicating an ID of a maker of an apparatus having performed a last update process, and then recording the updated command storage file and the updated index file on the information recording medium, the command storage file and the index file being updated and recorded in response to a determination that a predetermined update process event is detected, the predetermined update process event not being the recording of the AV stream data onto the information recording medium and the editing of the recorded AV stream data at which the controller does not update the command storage file and the index file, wherein the predetermined update process event is executed after the command storage file and the index file are updated and recorded by the controller responsive to the determination that the predetermined update process event is detected.