Abstract: The hard disc is provided with two areas for storing file system management information and content management information. The disc recorder records double file system management information and content management information onto the hard disc. Further, information indicating a procedure for updating file system management information is described in a flash descriptor, and a procedure for updating content management information is described in a robust descriptor.

Abstract: A data processing method for converting data to be recorded on a digital video disc into a record format thereof is disclosed, comprising the steps of generating source data including at least a picture signal, encoding the source data into encoded data, generating a script including at least information of the disc and playback control information in a tabular format, generating format information of the disc corresponding to at last the script and the encoded data, and generating record format data composed of the encoded data corresponding to the format information.

Abstract: The hard disc is provided with two areas for storing file system management information and content management information. The disc recorder records double file system management information and content management information onto the hard disc. Further, information indicating a procedure for updating file system management information is described in a flash descriptor, and a procedure for updating content management information is described in a robust descriptor.

Abstract: An information recording medium with recorded picture information and/or the speech information is made up of plural lists at least a portion of which record item information and playback control information. The item information indicates the one or plural items reproduced based upon the list, while the playback control information contains a pointer represented by an offset from the leading end of the playback control information indicating a connection to a separate list. An information reproducing apparatus when reproducing the picture information or the like from the information recording medium reproduces the picture information or the like from the picture recording medium responsive to the information selected under instructions by the user from among the playback control information data reproduced from the information recording medium. The information designated by the user may be reproduced or accessed easily.