Patent ID: 7130530

Claim:
A recording apparatus for recording, on an optical disk recording medium, N (N is an integer) pieces of data, data management information for each of the N pieces of data and total management information for managing the N pieces of data, comprising: means for recording, on the total management information area of the optical disk recording medium, time zone information (TM_ZONE) indicating a time difference between a world standard time and a standard time in a predetermined location; and means for recording, on the data management information area of the optical disk recording medium, recording time zone information (REC_TM_ZONE) at a time of recording data, indicating a time difference between the world standard time and the standard time at a location where the data have been recorded, and data recording time information (REC_TM) indicating a time when the data is recorded in accordance with the standard time indicated by the time zone information (TM_ZONE), wherein the data recording time information (REC_TM) is obtained by a calculation of (CUR_TM)+(TM_ZONE)−(REC_TM_ZONE) using a recording time (CUR_TM) at a local time, the time zone information (TM_ZONE) and the recording time zone information (REC TM_ZONE) at recording the data.