Patent ID: 7751692

Claim:
A method of reproducing an interactive disk using a network, comprising the steps of: (a) checking whether a disk inserted in a disk device is an interactive disk, the disk having a file with contents pre-recorded therein; (b) setting a system to be suitable for a reproduction of the contents, based on a result of the checking step; (c) in response to a user's request, transmitting, to an external source, disk version information and content version information, and a demand for a file having a latest version compatible with the inserted interactive disk and including contents having a version later than a version of the contents of the pre-recorded file; (d) receiving, from the external source through the network, a subset of the contents of the file having the latest version compatible with the inserted interactive disk, and verifying that a version of the contents of the file having the latest version compatible with the inserted interactive disk is later than the version of the contents of the pre-recorded file; (e) updating the contents that are pre-recorded on the interactive disk based on the received subset if the version of the contents of the file having the latest version compatible with the inserted interactive disk is verified to be later than the version of the contents of the pre-recorded file; (f) resetting the system to be suitable for a reproduction of the updated contents; and (g) presenting the updated contents by presenting the subset synchronously with video or audio data read from the interactive disk prior to or while receiving a second subset.