Patent ID: RE41201

Claim:
A reproduction method of a reproduction apparatus, which reproduces one of an optical audio disc and a DVD-Video disc, wherein the optical audio disc comprises a first identifier information for identifying the optical audio disc and a first pack containing a first audio data and a second pack containing other data than said first audio data and a first navigation pack, which is defined by the DVD Video Specifications, and wherein said first navigation pack contains a first reproduction control information for controlling reproduction of data, which are contained in said first and second packs, and wherein said optical audio disc comprises a first management information for managing the data, which are contained in said first and second packs and a managing area containing a second management information, which are defined by the DVD-Video Specifications, and said managing area manages the data, which are included in said first and second packs, and wherein the DVD-Video disc comprises a second identifier information for identifying the DVD-Video disc and a third pack containing a second audio data and a fourth pack containing video data and a second navigation pack, which is defined by the DVD-Video Specifications, said second navigation pack containing a second reproduction control information for controlling reproduction of data, which are contained in said third and fourth packs, said reproduction method comprising steps of: identifying the disc as said optical audio disc in accordance with the first identifier information; and reproducing the first audio data included in said first pack and the other data included in said second pack of said optical audio disc in accordance with the first management information, said step of reproducing further identifying the disc as said DVD-Video disc in accordance with the second identifier information and reproducing the second audio data included in said third pack and the video data included in said fourth pack of said DVD-Video disc in accordance with the second management information.