Abstract: Embodiments of the disclosure provide a computer-implemented method for data replication from a first storage to a second storage. In the method, data replication control blocks for data blocks stored in the first storage and needed to be transmitted may be generated. The data replication control blocks may be sorted in an ascending order of probabilities of expected overwrites of the respective data blocks. The data blocks may be transmitted from the first storage to the second storage according to the sorted data replication control blocks.

Abstract: An information processing apparatus includes: a first memory that stores an information processing program; a second memory that stores a file-to-be-erased; and a processor. When executing the information processing program, the processor, when the processor executes a job which requires to generate a temporary file, selects a file having a size larger than a size of the temporary file out of one or more files-to-be-erased stored in the second memory, treats the selected file as a file-to-be-unerased, divides the file-to-be-unerased stored in the second memory into a first file having a size the same as the size of the temporary file and a second file being a rest, treats the second file as a file-to-be-erased, writes the temporary file over the first file as a file-to-be-unerased to thereby generate the temporary file, and after the temporary file is used in the job, treats the temporary file as a file-to-be-erased.

Abstract: A digital jukebox (14) allows for playback of a first offering and a second offering. The contents of each offering are individually licensed for public performance at a particular location where the jukebox is found. The jukebox (14) displays advertisements that are selected in response to user interaction with the jukebox or a number of other factors. The jukebox (14) features a screen (18 and 20) that allows user to interact with the jukebox to select offerings, but also to respond to advertising. Jukebox can function in cooperation with a server (12), but in the alternate, can function as an independent and stand-alone device when connection (16) to server (12) is not available.

Abstract: Systems and methods are disclosed for configuring a non-volatile memory (“NVM”). In some embodiments, each block of the NVM can include a block table-of-contents (“TOC”), which can be encoded (e.g., run-length encoded) and dynamically-sized. Thus, as user data is being programmed to a block, the size of a block TOC can be concurrently recalculated and increased only if necessary. In some embodiments, the NVM interface can use a weave sequence stored in the context information and at least one weave sequence associated with each page of a block to determine whether to replay across the pages of the block after system boot-up.

Abstract: A digital jukebox (14) allows for playback of a first offering and a second offering. The contents of each offering are individually licensed for public performance at a particular location where the jukebox is found. The jukebox (14) displays advertisements that are selected in response to user interaction with the jukebox or a number of other factors. The jukebox (14) features a screen (18 and 20) that allows user to interact with the jukebox to select offerings, but also to respond to advertising. Jukebox can function in cooperation with a server (12), but in the alternate, can function as an independent and stand-alone device when connection (16) to server (12) is not available.

Abstract: An optical disk apparatus which conducts overwriting of data on a rewritable optical disk or conducts write-once recording of data on a write-once optical disk includes a control unit for receiving a recording command which specifies a recording area and orders recording and receiving transfer data, and a collation unit for collating existing data on the optical disk with the transfer data. Upon reception of the recording command and the transfer data by the control unit, the existing data is collated with the transfer data by the collation unit, and overwrite recording of data in places where the transfer data is different from the existing data is conducted on the rewritable optical disk, or data in places where the transfer data is different from the existing data is recorded in an unrecorded area of the write-once optical disk.

Abstract: There are provided an optical disc device and its recording/reproducing method for managing the management information about plural optical discs efficiently. In the present invention, the management information about the plural optical discs is stored in a memory. Moreover, the management information about part or all of the optical discs stored in the memory is recorded in the optical disc.

Abstract: An information erasing device includes a recording section where recording is performed with regard to a disk-shaped recording medium, and a control section which controls the recording section so that the recording section overwrites a part of a erasing target sector so as not to overlap in a radius direction of the disk-shaped recording medium.

Abstract: A storage system, which includes a plurality of ODDs, is configured so as to easily retrieving a predetermined file from files stored in a plurality of optical discs. The storage system includes a storage controller connected to the plurality of ODDs and a nonvolatile memory via a storage bus. Each of the optical discs mounted in the ODDs has a file system representing the storage structure of files stored in the optical disc. The nonvolatile memory stores copies of the file systems of all the mounted optical discs. A user refers to the file system stored in the nonvolatile memory to retrieve a file. When an optical disc is ejected, the optical disc stores copies of the file systems of the other optical discs and is ejected. If the optical disc is installed into another storage system, the user can search for a file stored in the other optical discs.

Abstract: An information processing apparatus including a reading unit, a processor, a transferring unit, and a control unit. The reading unit reads first management data from a first recording medium. The first management data identifies tracks of source data recorded on the first recording medium. The processor compares the first management data with second management data. The second management data identifies files of ripped data recorded on a second recording medium. The transferring unit transfers one of the tracks of the source data, to the second recording medium, when absent from the second recording medium. The control unit controls a display unit to display transferring status by a symbolic figure.

Abstract: A method for reproducing digital data and identifying the same by executing a software program stored in a memory of a computer is disclosed. The method includes: reading digital data; identifying total size of the digital data; saving the digital data as a temporary file; receiving a request for selecting at least one target medium, wherein the target medium is used for storing the digital data; determining a quantity of the target medium to be used for writing; writing the digital data into the target medium; generating a list text file and an index text file into each target medium, wherein the list text file includes information regarding to the content stored in each target medium respectively and the index text file includes information regarding to the content in all target medium; and building an index database of the digital data.

Abstract: A method for managing data from a host to an optical disc includes: storing data into a write data queue (WDQ) when the data of sequential write commands from the host are write-address-discontinuous; and transferring specific data from the WDQ to a write buffer when an available memory space in the WDQ is lower than a first threshold value or an available memory space in the write buffer exceeds a second threshold value.

Abstract: Disclosed is a music jukebox which is configured for storing a music library therein. The music jukebox includes a housing, audio input structure on the housing for receiving audio signals, audio output structure on the housing for outputting audio signals, and a data storage structure in the housing for storing audio signals. The music jukebox is configured such that a music library of sound tracks is storable in the data storage structure. The music jukebox includes means for selecting a sound track from the music library stored in the data storage structure to play through the audio output structure, and the housing includes a display thereon which identifies sound tracks in the music library. Preferably, the music jukebox is configured such that the sound tracks stored in the data storage structure are editable before being played through the audio output structure.

Abstract: A playback device reads a BD-J application from a BD-ROM and runs the BD-J application. The BD-J application causes, by using a socket connection API, the digital copy module of the playback device to execute copying of a protected content for portable terminals to a removable recording medium and setting of a resume playback point on the copied content. The resume playback point is specified by the BD-J application according to playback time information read from the PSR set.

Abstract: The present invention provides a reproducing apparatus for reproducing a plurality of pieces of content data stored in a content data storage unit according to a play list defining reproduction order of the content data. The apparatus includes a play list storage unit, a request information generating unit, and a play list reconstructing unit. The play list storage unit stores the play list having a play list generating rule and identifying information for identifying the content data matching the play list generating rule. The request information generating unit generates reconstruction requesting information for requesting reconstruction of the play list. The play list reconstructing unit reconstructs at least a part of the play list stored in the play list storage unit into a play list having the play list generating rule corresponding to an apparatus use condition in response to the reconstruction requesting information generated by the request information generating unit.

Abstract: An information recording apparatus for recording additional content on a medium on which a title including one or more files is already recorded, includes means for designating a title to be added on the medium; means for transmitting disc package information, the disc package information and unique IDs; means for receiving and additionally recording on the medium the title to be added generated in the content server, file names of files so as not to be the same as the file names of the files constituting the titles already recorded on the medium; means for receiving and additionally recording a new title for display of a menu screen on the medium, which is generated in the content server, so that the title to be added can be selected, on the basis of the disc package information; and means for receiving and additionally recording new disc package information on the medium.

Abstract: An operation signal corresponding to an input operation on a rotating body by a user is output to an information-processing unit 400 and the operation signal is processed by a processing condition in accordance with the condition of the input operation. Based on the information property such as sound volume processed based on the operation signal and output by the output unit 200 or a setting position such as a cue point that is set by the input operation on the switch section 340 and at which a reproducing position is changed by a processing unit 440 in accordance with a pressing operation on the rotating body 600, the location of the reproducing position that is moved in accordance with the condition of the input operation on the rotating body 600 is recognized. And the rotating body 600 is operated (conducting click-like movement restriction, vibration and the like) in accordance with output condition corresponding to the condition of the input operation based on the property.

Abstract: A recording device records contents in a plurality of recording media. While the recording device records a content in a recording medium, if a free space of the recording medium runs out, an unrecorded part of the content needs to be recorded in another recording medium. In order to play back all parts of the content, all recording media in which all the parts of the content have been separately recorded are necessary. Particularly, if an internal recording medium included in the recording device has a small space and accordingly a sufficient space is secured by connecting an external removable recording medium to the recording device after the recording has started, parts of the content are separately recorded in the internal recording medium and the external recording medium.

Abstract: An optical-disc writer writes extrinsic data to an optical disc. Extrinsic data can be written as (i) embedded marks (e.g., pits and lands) located outside the conventional readable area of a disc and/or (ii) alternative marks, such as surface marks located on a surface of the disc. In an optical-disc player having a disc-reading subsystem and a read controller, the disc-reading subsystem reads and relays the extrinsic data to the read controller, which controls the operations of the player based on the extrinsic data. For example, the writer prints extrinsic data, e.g., a barcode, on the surface of a software installation disc. The disc is inserted in the player and installation is commenced. The read controller instructs the disc-reading subsystem to read the extrinsic information. If the read controller determines that the extrinsic data was successfully read, then installation proceeds; otherwise, installation is halted.

Abstract: A technique for investigating differences of composition and structural state of a recording layer of an optical disc along with other defects, such as scratches, contamination, warp and distortion, prior to video recording and for setting up appropriate recording conditions in compliance with this result to thereby perform recording is disclosed. In an optical disc recording device capable of recording information on an optical disc, a region to be investigated is defined based on the video recording reservation contents. Then, investigate and evaluate the disc state which can affect the recording quality in a target disc region to be recorded. Next, based on investigation/evaluation results, perform recording setup, recording speed setup, servo control setup and recording position setup to thereby perform the recording. By appropriately modifying the recording setup on a case-by-case basis, it is possible to achieve high-quality recording.

Abstract: A data recording apparatus and a data reproducing apparatus which ensure security of a portable recording medium, such as an optical disk. The apparatus has a security mode and a normal mode as operation modes. In the security mode, a system controller of the apparatus records a security identification signal in an area other than a user data area of the optical disk. At the time of copying of the optical disk, the security identification signal disappears, and a limitation is imposed on reproduction, thereby preventing copying operation. In the security mode, the system controller records the security identification signal in the area other than the user data area of the optical disk, as well as recording user data by means of converting an address through use of a password. At the time of reproduction of data, absence or presence of the security identification signal is ascertained. When the security identification signal is present, the address is inversely converted, thereby reproducing data.

Abstract: The content copying system pertaining to the present invention is a content copying system in which multiple devices (11-14) cooperate to copy content to a removable recording medium (31). The first device (11) comprises a writing unit for writing first management data which includes content identifiers (hash1˜hash4) to the removable recording medium (31). A second device (12) storing content pieces (ep2, ep4) copies content pieces (ep2, ep4) corresponding to the content identifiers (hash2, hash4) included in the first management data to the removable recording medium (31). Another second device (13) which has a content piece (ep3) stored thereon copies, to the removable recording medium (31), the content piece (ep3) corresponding to the content identifier (hash 3) written to the removable recording medium (31).

Abstract: A content playing device includes: an identifying unit to identify, with regard to subsidiary contents created by secondarily using contents as editing material and having playback control information instructing playback of actual content data of source editing material contents which are primary contents serving as source editing material, lacking primary contents which are the source editing material contents that are not included in held primary contents deemed to be held by a user; a sample content obtaining unit to externally obtain sample contents corresponding to the lacking primary contents; and a playback processing unit to execute, at the time of playing subsidiary contents following playback control information, playback signal processing for actual content data of held source editing material contents currently existing as the held primary contents regarding held source editing material contents, and playback signal processing for actual content data of corresponding sample contents regarding the

Abstract: A method and an apparatus for controlling data access rate of an optical disc player are disclosed. The method includes steps of (1) utilizing a micro-controller to decide whether an action of an instruction of a predetermined data processing is an extraction operation or a play operation; (2) driving the spindle motor and a pick-up head to retrieve data from an optical disc at a first data access rate by the micro-controller while the action of the instruction of the predetermined data processing is an extraction operation; and (3) driving the spindle speed and the pick-up head to retrieve data from the optical disc at a second data access rate which is less than the first data access rate by the micro-controller while the action of the instruction of the predetermined data processing is a play operation.

Abstract: A recording apparatus having a reproduction means to play digital data from a recording medium recorded with that digital data and retrieval information, a recording means to write the digital data reproduced by the reproduction means and record the retrieval information on a control table, and a control circuit to search the control table by using the retrieval information when the digital data from the reproduction means is written by the recording means, to permit the writing of digital data recorded on the medium with the recording means when the retrieval information is not recorded on the control table, and to prohibit the writing of digital data recorded on the medium with the recording means when the retrieval information is already recorded on the control table, and also prevent the mistaken duplicate copying of the digital data with the recording means.

Abstract: An information recording apparatus for recording additional content on a medium on which a title including one or more files is already recorded, includes means for designating a title to be added on the medium; means for transmitting disc package information, the disc package information and unique IDs; means for receiving and additionally recording on the medium the title to be added generated in the content server, file names of files so as not to be the same as the file names of the files constituting the titles already recorded on the medium; means for receiving and additionally recording a new title for display of a menu screen on the medium, which is generated in the content server, so that the title to be added can be selected, on the basis of the disc package information; and means for receiving and additionally recording new disc package information on the medium.

Abstract: A reproduction system 100 includes a rotating body on which a rotary operation is conducted by a user, a rotary movement detector 810 that detects the rotation of the rotating body and outputs a detection signal in accordance with a rotary condition thereof, and a restricting unit that conducts a restriction processing for restricting the rotation of the rotating body based on the detection signal. Accordingly, different resistance feeling in accordance with the rotary operation on the rotating body is provided to a user, thereby exhibiting excellent operational feeling just like a rotation of a turntable of a record player.

Abstract: Apparatus and method for providing hidden data to a data storage medium. The hidden data are written by selectively adjusting at least one access parameter of the medium, and preferably by selectively adjusting multiple such parameters. The presence of the hidden data is preferably undetectable to the human eye during unaided visual inspection of the medium, but is revealed by a surface plot of at least a portion of the medium. The surface plot preferably provides a human detectable image of the hidden data to authenticate the medium as an authorized copy. The medium preferably comprises a pre-recorded or recordable optical disc, or a glass master from which such discs are formed. The adjusted access parameter(s) preferably include adjustments in motor velocity, data bit rate, latency time, adjusted symbol length, illegal symbol length, localized reflectivity of the medium, variations in pre-groove amplitude, error rates, and/or localized induced errors.

Abstract: The invention relates to a method for preventing interchange of a first optical information carrier (1) with a second optical information carrier in an optical drive. Initially, the light (5) is focused at the first optical information carrier (1) in the optical apparatus followed by the steps of detecting reflected light (8) from the first optical information carrier (1) and generating a plurality of signals (CA, RF, FE) from the detected light (8), such as a focus error signal (FE). Upon obtaining an indication of a signal, e.g. the focus error signal (FE), is absent or reduced below a certain level, there is a step of assessing if the first optical information carrier (1) has been removed from the optical drive. If removed, reproduction of information by the optical drive is made impossible until some pre-determined measures have been taken, e.g. restart of the optical drive or other measures.

Abstract: Disclosed are systems and methods for identifying a scene in a video or audio source containing sports content. A representative method includes: extracting audio data from a video source, the video source containing sports content, removing from the audio data sounds not producible by human, classifying scenes of the video source as important scenes of the video clip by analyzing the energy, pitch and tonality of at least one frame of the audio data and determining whether the at least one frame is an exciting scene.

Abstract: An optically-readable disk includes a device that disrupts readability of the disk when the disk is spun at an angular velocity substantially greater than required to play the disk in its intended playing device, or for when a defined integral of velocity and time is exceeded. The device may include a fluid container that disperses a data-disruptive fluid. The device may include a membrane or layer that is disrupted when the disk is rotated above a defined angular velocity, or when a defined integral of velocity and time is exceeded.

Abstract: A copy-protected compact disc includes, within a single session, a table of contents (TOC) and a Video CD index (VI). Each track (T) is prefaced by unrecoverable data (UD) at a track start position (ATOC) indicated by the table of contents (TOC). However, the Video CD index (VI) indicates the actual position (AP) of the tracks. DVD players use the Video CD index (VI) to locate the tracks, while CD-ROM drives use the table of contents (TOC) and read the unrecoverable data (UD), which prevents them from reading the subsequent track (T). The unrecoverable data (UD) may be prefaced by data pointers (DP) which cause the CD-ROM drive to load a player program in response to the error condition. The player program can be used to play the tracks (T), but restricts copying. Subchannel data (P; DX) causes audio CD players to ignore the Video CD index (VI) and the unrecoverable data (UD), and to play the tracks (T) at their actual start positions (AP).

Abstract: A system for duplication of data onto disks includes a housing, a drawer device, a transport mechanism, a set of disk holders, an arm and a control device. The housing includes a printing device and a set of copy units. The transport mechanism is connected to the arm for moving individual disks between the disk holders, the drawer device and the set of copy units. The control device automatically controls the various functions of various components of the system for duplication.

Abstract: Disclosed is a music jukebox which is configured for storing a music library therein. The music jukebox includes a housing, audio input structure on the housing for receiving audio signals, audio output structure on the housing for outputting audio signals, and a data storage structure in the housing for storing audio signals. The music jukebox is configured such that a music library of sound tracks is storable in the data storage structure. The music jukebox includes means for selecting a sound track from the music library stored in the data storage structure to play through the audio output structure, and the housing includes a display thereon which identifies sound tracks in the music library. Preferably, the music jukebox is configured such that the sound tracks stored in the data storage structure are editable before being played through the audio output structure.

Abstract: An optically-readable disk includes a device that disrupts readability of the disk when the disk is spun at an angular velocity substantially greater than required to play the disk in its intended playing device, or for when a defined integral of velocity and time is exceeded. The device may include a fluid container that disperses a data-disruptive fluid. The device may include a membrane or layer that is disrupted when the disk is rotated above a defined angular velocity, or when a defined integral of velocity and time is exceeded.

Abstract: A data storage medium, and an apparatus and method for formatting the same. The medium is preferably characterized as a hybrid or recordable optical disc, and includes a pre-recorded storage area and a recordable storage area. The pre-recorded storage area stores file system data which identifies at least one file to be stored to the recordable storage area during a subsequent recording session, with the file system data having been stored to the pre-recorded storage area during a previous recording session. The file system data further preferably identifies at least one file stored to the pre-recorded storage area during the previous recording session. The pre-recorded and subsequently stored files are preferably disposed within the same logical track on the medium. The pre-recorded file system data includes entries for the subsequently added file(s), and eliminates the need for multiple copies of the file system on the medium.

Abstract: A recording and reproducing apparatus and a recording and reproducing method capable of making correspond to original data without recording repeated data are provided. The recording and reproducing apparatus includes: reproducing element 2 for reproducing main data and TOC data for managing the main data that are recorded in CD 1; recording and reproducing element 7 for recording in and reproducing from HDD 9 the main data reproduced from CD 1 and PBLIST 11 for managing the main data; end detection element 4 for detecting an end of each track of the main data; complete reproducing detection element 3 for detecting that track has been reproduced completely; renewal element 8 for renewing PBLIST 11 to be recorded in HDD 9 based on detected results from end detection element 4 and complete reproducing detection element 3, and generating element 5 for controlling recording the main data in HDD 9 based on PBLIST 11 and controlling renewal element 8 so as to renew PBLIST 11 when the main data is recorded in HDD 9.

Abstract: A BD-ROM stores a video stream and a plurality of pieces of copy control information. The plurality of pieces of copy control information include “CCIforHD with CM”, “CCIforSD with CM”, “CCIforHD without CM”, and “CCIforSD without CM”. The video stream constitutes video composed of a plurality of video streams. Among the plurality of pieces of copy control information, “CCIforHD with CM” and “CCIforSD with CM” indicate whether recording is permitted of a video signal converted from the video stream and output with addition of supplemental information. On the other hand, “CCIforHD without CM” and “CCIforSD without CM” indicate whether recording is permitted of the video output without addition of the supplemental information.

Abstract: An information processing device performing replication of data between recording media so that valid information recorded in a first recording medium is recorded in a second recording medium, the information processing device includes a replication control unit controlling the replication of the data so that only information of an allocation space which is an area having the valid information recorded therein is read from the first recording medium serving as a replication source and the read valid information is written in the second recording medium serving as a replication destination.

Abstract: A technique for investigating differences of composition and structural state of a recording layer of an optical disc along with other defects, such as scratches, contamination, warp and distortion, prior to video recording and for setting up appropriate recording conditions in compliance with this result to thereby perform recording is disclosed. In an optical disc recording device capable of recording information on an optical disc, a region to be investigated is defined based on the video recording reservation contents. Then, investigate and evaluate the disc state which can affect the recording quality in a target disc region to be recorded. Next, based on investigation/evaluation results, perform recording setup, recording speed setup, servo control setup and recording position setup to thereby perform the recording. By appropriately modifying the recording setup on a case-by-case basis, it is possible to achieve high-quality recording.

Abstract: The continuous update of the Recorded Area Indicator on a DVD+R disc leads to a loss in performance of the recorder. If the update is not continuous, the Recorded Area Indicator on the disc may not accurately reflect the status. In order to ensure that the Recorded Area Indicator accurately reflects the status but avoids loss of performance, the update of the Recorded Area Indicator is performed when a close track session command is issued to the drive signaling the end of the recording, regardless of whether the track or session on the disc remains open. During the recording the Recorded Area Indicator is kept and updated in the memory of the recorder.

Abstract: An apparatus and a method of generating a video-reproducing clock signal from a 480p signal. The apparatus generates a video-reproducing clock signal from a 480p signal that includes a vertical synchronization signal, horizontal synchronization signals, and copy guard signals. The apparatus includes a coast signal generating unit and a clock signal generating unit. The coast signal generating unit generates a plurality of coast signals with pulse widths, each of which covers the different number of copy guard signals on the basis of the present copy guard signal in one frame signal of the 480p signal. The clock signal generating unit generates horizontal synchronization signals at the same period as that of the horizontal synchronization signals generated in a previous frame, while the corresponding coast signal is being generated.

Abstract: Disclosed is a music jukebox which is configured for storing a music library therein. The music jukebox includes a housing, audio input structure on the housing for receiving audio signals, audio output structure on the housing for outputting audio signals, and a data storage structure in the housing for storing audio signals. The music jukebox is configured such that a music library of sound tracks is storable in the data storage structure. The music jukebox includes means for selecting a sound track from the music library stored in the data storage structure to play through the audio output structure, and the housing includes a display thereon which identifies sound tracks in the music library. Preferably, the music jukebox is configured such that the sound tracks stored in the data storage structure are editable before being played through the audio output structure.

Abstract: A video playback apparatus includes: video data inputting unit; a ranking data inputting/generating unit that inputs or generates ranking data where scenes in video data are ranked according to importance; a playback scene determination parameter inputting unit that inputs parameters when determining scenes to be played back according to importance; a playback scene determining unit that determines playback scenes based on ranking data and playback scene determination parameters; and a display unit that displays playback scenes. A viewing time of video data that the user desires and a maximum time width of each playback scene are inputted to the playback scene determination parameter inputting unit, and the playback scene determining unit cuts scenes so that the playback time of the playback scenes fits the maximum time width, and determines the playback scenes so that the sum of the playback time of the playback scenes fits within the viewing time.

Abstract: A reproducing apparatus comprises storage to store a plurality of programs being managed as a group, and management information including group information of programs, an input unit, a reproduction unit, and a controller to control the reproduction unit to reproduce a highlight of a program in a group from a plurality of groups. The highlight of the program may be representative of an album. Thus, when the highlight of the program is reproduced, a user can easily search for a desired album.

Abstract: A recording/reproducing unit for recording/reproducing information data on/from a recording medium, an initialization unit for initializing the recording medium in one of a first initialization mode in which information data recorded in all recording areas of the recording media is erased and a second initialization mode in which management data for information data recorded on the recording medium is erased from certain areas of the recording medium and erasion is not performed on other recording areas, and a control unit for controlling the initialization unit in accordance with an instruction to shut off a power of the apparatus during initialization, wherein processing by the initialization unit is changed between a case where the power-off instruction is received during initialization in the first initialization mode and a case where the power-off instruction is received during initialization in the second initialization mode.

Abstract: A navigation system including a drive for reading out navigation data which is stored on a data medium. In addition to the navigation data, a pregap is present on the data medium in which identification data is stored. The drive is designed in such a way that it is able to read CD information in the pregap and compares the identification data stored in the pregap to predefined data to allow or deny access to the navigation data.

Abstract: A home entertainment network has a computer with a multi-DVD changer which holds plural DVDs onto which content from an hard disk drive (HDD) can be transferred for storage. Also, DVD content can be ripped to the HDD, and multiple copies of home videos and photographs on the HDD can be made onto several disks simultaneously.

Abstract: A highlight of a representative track of each album stored in a recording medium and a highlight of each track of a designated album are pre-set. Highlights of representative tracks of albums are successively reproduced from album 1. As a result, albums are searched for a desired track. When the desired album has been found, highlights of tracks of the album are successively reproduced from track 1. As a result, the album is searched for the desired track.

Abstract: A recording medium storing a write protection information, and a write protection method for protecting data recorded on a recordable and/or rewritable disc from unwanted overwriting or erasing. In order for write protection of a disc in a bare state that is usually used in a cartridge having a recognition switch for write-protection, such as a DVD-RAM, write protection information is recorded in a Lead-in area, a Lead-out area or a recording information area other than a user data area of the disc, and the data is protected from unwanted overwriting or erasing using the write protection information. Also, even though the write protection information stored on a disc does not match the state of a recognition switch of a case for write-protection, the data can be prevented from unwanted overwriting or erasing. Thus, the write protection can be ensured when a recordable and/or rewritable recording medium, such as DVD-RAM, DVD-R and DVD-RW, is used in a bare state.