Abstract: A data communication unit receives encrypted digital data via a network and records the digital data on a primary recording medium. The digital data, having been encrypted in different encryption systems according to the distributers, include attribute information indicating the encryption systems. The encryption system of the digital data is determined and the encrypted data is decrypted by an appropriate decryption unit. Identification information of a secondary recording medium or a playback apparatus is obtained according to whether the secondary recording medium is removable from the playback apparatus. A controller selects an encryption unit among a plurality of encryption units according to the obtained identification information. The selected encryption unit creates an encryption key according to the identification information and re-encrypts the digital data. A recording unit records the digital data on the secondary recording medium.

Abstract: A data transmit/receive unit receives encrypted digital data distributed through an electronic music distribution system and records the digital data on a primary recording medium. Digital data have been encrypted in different encryption systems according to the distributers, and include attribute information indicating the encryption systems. The encryption system of digital data that has been extracted by a data extraction unit is judged by a judging unit and decrypted by an appropriate decryption unit. An inherent information obtaining unit obtains the identification information of a secondary recording medium or a playback apparatus according to whether the secondary recording medium can be removable from the playback apparatus. An encryption system designation unit selects one out of a plurality of encryption units according to the obtained identification information. The selected encryption unit creates a encryption key according to the identification information and encrypts the digital data.

Abstract: A semiconductor memory card stores a plurality of audio objects (AOBs) that compose a plurality of tracks and playlist information showing a reproduction order for the tracks. The semiconductor memory card also stores, as resume information (PLMG_RSM_PL), (1) a Playlist_Number showing which playlist information was used the last time playback was performed for the semiconductor memory card, (2) a Track_Number showing the last track to be played back, and (3) a Playback_Time showing a position at which where playback was stopped as a time expressed in relation to the start of the track.

Abstract: A plurality of audio object (AOB) files and a plurality of picture object (POB) files are stored. Default Play list Information and sets of Playlist Information each show an order in which AOBs stored in the plurality of AOB files are to be reproduced. The DPLGI includes DPLI_POB_SRPs that specify at least one POB to be displayed during the playback period of AOBs indicated by the playback order given in the Default Playlist Information. The TKGI includes TKI_POB_SRPs that specify at least one POB to be displayed only during the playback period of a particular AOB out of the AOBs indicated by the playback order given in the Default Playlist Information.

Abstract: A plurality of audio object (AOB) files and a plurality of picture object (POB) files are stored. Default Playlist Information and sets of Playlist Information each show an order in which AOBs stored in the plurality of AOB files are to be reproduced. The DPLGI includes DPLI_POB_SRPs that specify at least one POB to be displayed during the playback period of AOBs indicated by the playback order given in the Default Playlist Information. The TKGI includes TKI_POB_SRPs that specify at least one POB to be displayed only during the playback period of a particular AOB out of the AOBs indicated by the playback order given in the Default Playlist Information.

Abstract: The recording medium of this invention is recorded with a plurality of digital data and a plurality of reproduction path information defining a reproduction order of the plurality of digital data, wherein the plurality of reproduction path information includes first reproduction path information defining a reproduction order of all of the plurality of digital data recorded on the recording medium and second reproduction path information defining a reproduction order of at least one of the plurality of digital data recorded on the recording medium.

Abstract: A semiconductor memory card for storing audio information with corresponding text information and type information, the type information indicating a type of the text information. The type is classified into at least (a), (b), and (c) in which the text information respectively includes a 1-byte character code sequence, a 2-byte character code sequence, and a 1-byte character code sequence and a 2-byte character code sequence.

Abstract: The recording medium of this invention is recorded with a plurality of digital data and a plurality of reproduction path information defining a reproduction order of the plurality of digital data, wherein the plurality of reproduction path information includes first reproduction path information defining a reproduction order of all of the plurality of digital data recorded on the recording medium and second reproduction path information defining a reproduction order of at least one of the plurality of digital data recorded on the recording medium.

Abstract: A plurality of audio object (AOB) files and a plurality of picture object (POB) files are stored. Default Playlist Information and sets of Playlist Information each show an order in which AOBs stored in the plurality of AOB files are to be reproduced. The DPLGI includes DPLI_POB_SRPs that specify at least one POB to be displayed during the playback period of AOBs indicated by the playback order given in the Default Playlist Information. The TKGI includes TKI_POB_SRPs that specify at least one POB to be displayed only during the playback period of a particular AOB out of the AOBs indicated by the playback order given in the Default Playlist Information.

Abstract: A plurality of audio object (AOB) files and a plurality of picture object (POB) files are stored. Default Playlist Information and sets of Playlist Information each show an order in which AOBs stored in the plurality of AOB files are to be reproduced. The DPLGI includes DPLI_POB_SRPs that specify at least one POB to be displayed during the playback period of AOBs indicated by the playback order given in the Default Playlist Information. The TKGI includes TKI_POB_SRPs that specify at least one POB to be displayed only during the playback period of a particular AOB out of the AOBs indicated by the playback order given in the Default Playlist Information.

Abstract: A semiconductor memory card for storing audio information with corresponding text information and type information, the type information indicating a type of the text information. The type is classified into at least (a), (b), and (c) in which the text information respectively includes a 1-byte character code sequence, a 2-byte character code sequence, and a 1-byte character code sequence and a 2-byte character code sequence.

Abstract: The recording medium of this invention is recorded with a plurality of digital data and a plurality of reproduction path information defining a reproduction order of the plurality of digital data, wherein the plurality of reproduction path information includes first reproduction path information defining a reproduction order of all of the plurality of digital data recorded on the recording medium and second reproduction path information defining a reproduction order of at least one of the plurality of digital data recorded on the recording medium.

Abstract: A content copying system is formed from a host computer and connected disc drive, a removable recording medium being loaded into the latter. When the removable recording medium loaded into the disc drive is DVD-Audio, the disc drive reads a title, recorded on the recording medium and outputs it to the host computer, where it is-stored in a hard disk. When the removable recording medium loaded into the disc drive is DVD-RAM, the disc drive has the host computer read the title recorded in the hard disk, and records this title onto the DVD-RAM. The disc drive does not increment the number of copies made for a title when it is read from DVD-Audio and recorded in the hard disk in the host computer, but only when it is read from the hard disk and recorded onto DVD-RAM.

Abstract: An authoring system variously processes a bitstream carrying information about moving picture data, audio data, and subpicture data constituting titles having a sequence of related content, generates a bitstream constituting a title with content corresponding to a user selection, efficiently records the generated bitstream to a specific recording medium, and reproduces title content corresponding to a user selection from the bitstream thus generated. Editing content input by a user using a keyboard or other device for the multimedia bitstream content is the source data is converted to authoring encoding parameters. Whether certain conditions determined by the data structure and other considerations of the authoring system are met is determined, and if the conditions are not satisfied, feedback is given to the user to prompt re-entry of the editing information.

Abstract: A mobile phone 100 with music reproduction function comprising a reproduction unit 106 that reproduces music data and a ring tone which are recorded in a music data recording medium 105 and a ring tone, a communication unit 108 that detects an incoming call from outside and a control unit 103 that instructs the reproduction unit 106 to perform a fade-out process of reproducing music data and to perform a fade-in process of outputting a ring tone when the communication unit 108 detects an incoming call while the reproduction unit 106 is reproducing music data.

Abstract: The recording medium of this invention is recorded with a plurality of digital data and a plurality of reproduction path information defining a reproduction order of the plurality of digital data, wherein the plurality of reproduction path information includes first reproduction path information defining a reproduction order of all of the plurality of digital data recorded on the recording medium and second reproduction path information defining a reproduction order of at least one of the plurality of digital data recorded on the recording medium.

Abstract: The recording medium of this invention is recorded with a plurality of digital data and a plurality of reproduction path information defining a reproduction order of the plurality of digital data, wherein the plurality of reproduction path information includes first reproduction path information defining a reproduction order of all of the plurality of digital data recorded on the recording medium and second reproduction path information defining a reproduction order of at least one of the plurality of digital data recorded on the recording medium.

Abstract: The display unit displays an "Author" window and other windows that form a CUI according to control by the display control unit. The input operation unit receives inputs from the editor who views the "Author" and other windows. The window information storage unit stores the attributes of windows displayed by the display unit. The script information storage unit stores a template of scripts, including parameter strings, which conforms to the standards for multimedia optical discs and which is to be used for generating the outputted strings. The control unit interprets the operations received by the input operation unit 1501 and instructs the display control unit to display windows as required, in addition to storing variables that correspond to the parameters in the input data storage unit.

Abstract: An optical amplifier amplifies a wavelength-division-multiplexed optical input signal composed of optical signals having different wavelengths such that the output level of each of the optical signal is always optimized and such that the difference between the gains of the amplifier on the optical signals is minimized when the number of optical signals is two. The output level of the amplifier is controlled according to the number of the optical signals, to optimize the output level of each of the optical signals.

Abstract: An optical amplifier amplifies a wavelength division-multiplexed optical input signal composed of optical signals having different wavelengths such that the output level of each of the optical signal is always optimized and such that the difference between the gains of the amplifier on the optical signals is minimized when the number of optical signals is two. The output level of the amplifier is controlled according to the number of the optical signals, to optimize the output level of each of the optical signals.