Patent ID: 8032696
Filing Date: 2011-10-04
Classification: G11B

Abstract:
1. A decoding device comprising: an interface to which an external recording medium in which recording medium management information and an encoded file are stored is connected, said recording medium management information includes file rewriting discrimination information used for discrimination of a rewriting state of the file stored in the external recording medium; a processor for decoding the file read from the external recording medium using file analysis information obtained by analyzing data recorded on the external recording medium; and a memory in which the file analysis information generated by the processor and the recording medium management information read from the external recording medium are stored, wherein when the external recording medium connected to the interface is removed therefrom and a new external recording medium is thereafter connected to the interface, the processor selects either first file analysis information read from the memory or second file analysis information generated based on analysis of data recorded on the new external recording medium as the file analysis information to be used for decoding the file stored in the new external recording medium, the processor further makes such a selection based on a comparison between first recording medium management information stored in the memory and second recording medium management information read from the new external recording medium.