Patent ID: 8200069

Claim:
A data reproducing method of reproducing data having been recorded on a recording medium, comprising the steps of: recording data on said recording medium, said data including a first data group and a second data group, said first data group being recorded under a subdirectory, which is under an upper directory higher than the subdirectory, onto said recording medium in accordance with a BDAV recording format, said second data group being recorded under another subdirectory, which is under the upper directory higher than the other subdirectory, onto said recording medium in accordance with a BDMV recording format different from said BDAV recording format, said first recording data group including first list indication data which is used for a first list indicating method applicable to data under the BDAV recording format, said second recording data group including second list indication data which is used for a second list indicating method applicable to data under the BDMV recording format, different from said first list indicating method, said first list indication data corresponding to said first data group, and said second list indication data corresponding to said second data group recording, on the recording medium, information on a flag for performing the first data group and the second data group to be list-indicated, wherein the flag includes a coexistence flag which indicates coexistence of the subdirectory and the other subdirectory, and the coexistence flag is stored as a file under the subdirectory or the other subdirectory; reproducing the information on the flag; and list-indicating said first data group and said second data group according to the information reproduced, wherein said first data group and said second data group are collectively list-indicated if the coexistence flag is detected.