Patent ID: 8184949
Filing Date: 2012-05-22
Classification: G11B,H04N

Abstract:
1. A reproduction apparatus for reproducing an optical disk recording medium recorded with data management information for managing data as a data group including one or a plurality of data of N (N is an integer) pieces of data, and total management information for managing M (M is an integer) pieces of the data group, wherein the total management information includes time zone information (TM_ZONE) indicating a time difference between a world standard time (Greenwich Mean Time) and a standard time in a predetermined location, wherein the data management information includes: recording time zone information (REC_TM_ZONE) at a time of recording data, indicating a time difference between the world standard time (Greenwich Mean Time) and a standard time in a location where the data of the group data for managing the data management information has been recorded; first data recording time information indicating a recording time of data first recorded on the data group in accordance with the standard time indicated by the time zone information (TM_ZONE); and second data recording time information indicating a recording time of data last recorded on the data group in accordance with the standard time indicated by the time zone information (TM_ZONE), wherein the reproduction apparatus further includes specifying means for specifying a local recording time in a location where the data first or last was recorded on the data group has been recorded while the data is reproduced, and wherein the specifying means calculates, by (REC_TM)−(TM_ZONE)+(REC_TM_ZONE), a recording time at the local time of the data first recorded on the data group in accordance with the first data recording time information (REC_TM), the time zone information (TM_ZONE) and the recording time zone information (REC_TM_ZONE) at the data recording time; and a recording time at the local time of the data last recorded on the data group in accordance with the second data recording time information (REC_TM), the time zone information (TM_ZONE) and the recording time zone information (REC_TM_ZONE) at the data recording time, respectively.