Patent ID: 7580328

Claim:
A method for reproducing data, including changing a play mode for an optical player, comprising: discriminating whether an optical disc loaded in the optical player is of a first type and a second type; determining which of a plurality of sub-types of the first type the optical disc corresponds to by performing a focus search mode, when the optical disc is discriminated to be the first type; setting the play mode of the optical player to a first play mode corresponding to the determined sub-type of the first type of the optical disc; reading and reproducing data recorded in the loaded optical disc; and changing the play mode of the optical player to a second play mode corresponding to a predetermined sub-type of the second type of the optical disc, upon the optical player being unable to reproduce the data recorded in the optical disc using the first play mode, wherein the reproducing of data is performed whenever the play mode is changed, with the changing of the play mode including changing the play mode to the first play mode and successively changing the play mode according to a set order of same type mode changes, until reproduction of data is possible, upon the optical player being unable to reproduce the data recorded in the optical disc even after the mode has already been changed to the second play mode from the first play mode.