Patent ID: 7738775

Claim:
A recording and reproducing device that records and reproduces information, said device comprising: an obtainment unit operable to obtain first information; an information recording unit operable to record the first information in a first recording medium and to record second information in a second recording medium, the first information being obtained by said obtainment unit, and the second information having the same content as the first information; a management data recording medium in which management data is recorded, the management data indicating that one of the first information and the second information is valid and that the other one of the first information and the second information is invalid; a management data recording unit operable, when said information recording unit records the first information and the second information, to generate the management data indicating that the first information is valid and the second information is invalid and to record the management data in said management data recording medium; a receiving unit operable to receive a recording instruction which requests the first information recorded in the first recording medium to be recorded in the second recording medium; an invalidation unit operable to invalidate the valid first information by making said management data recording unit update the management data to indicate that the first information is invalid, in the case where said receiving unit receives the recording instruction; and a validation unit operable to validate the invalid second information by making said management data recording unit update the management data to indicate that the second information is valid, in the case where said receiving unit receives the recording instruction.