Patent ID: 8200065
Filing Date: 2012-06-12
Classification: G11B,H04N

Abstract:
1. An integrated circuit for use in a playback apparatus, the playback apparatus including a storage that stores a module having a function of a virtual machine for executing an application recorded on a recording medium, and playing a stream sequence including digital stream files that are stored on separate recording media, including a rewritable recording medium, the integrated circuit comprising: a central processing unit (CPU) that executes the module to cause the virtual machine to function; and a decoder that is distinct from the central processing unit (CPU) and that decodes a video stream and an audio stream that are included in the digital stream files stored on the recording media, wherein when the central processing unit (CPU) executes the module, the integrated circuit manages status information of the digital stream files, the status information indicating whether each of the digital stream files is in one of an enable status that is playable by the playback apparatus and a disable status that is unplayable by the playback, apparatus, if at least one of the digital stream files is in the enable status, the decoder decodes the at least one of the digital, stream files, and while the decoder decodes one of the at least one of the digital stream files that is in the enable status, the integrated circuit changes the status information of a remaining digital stream file that is recorded on the rewritable recording medium and is other than the one of the at least one of the digital stream files to one of the enable status and the disable status, according to a request from the application, the change to the enable status by the integrated circuit includes changing an attribute of the remaining digital stream file on the rewritable recording medium to a read-only attribute, and the change to the disable status by the integrated circuit includes changing the attribute of the remaining digital stream file on the rewritable recording medium to a rewritable attribute.