Abstract: According to an optical disc recording control method, a drive, and a recording system of the present invention, in a drive of an optical disc, when data transfer from a host computer is interrupted while data transmitted from the host computer is being recorded in a track of the disk, the recording in the track is stopped and the recording process is switched to record data in a lead-out area, and when the recording process for the lead-out area is ended, track information (TOC data and PMA data) from the first track up to the last track is modified in accordance with the track data which has been actually recorded on the disk, and the modified track information is recorded in a lead-in area and a PMA.

Abstract: MP3 decoders decode MP3 data streams that comprise headers and signal data interspersed with each other, each header specifying a distance to a subsequent header, each header corresponding to a frame of signal data, the header being associated with a pointer that points to a starting point of the signal data for that frame relative to the header. An editing system cuts tracks from existing data streams. During editing, a user signals a header corresponding to the start of the desired track. The track is from the data stream, including a part of the data stream pointed at by the header and preceding the specified header. A new MP3 compatible data stream is written to a medium. The new data stream contains said header as first valid header and said part of the data stream preceding the header.

Abstract: A system and method for a file server to allocate spare disks in a network storage system. The method determines the available spare disks and first selects those disks that satisfy one or more required rules. The method sorts the spare disks by a set of ordered policies to determine a highest-ranked disk that is then selected as the spare to be utilized. If multiple disks are equally ranked, one of the equally ranked disks is randomly chosen to be the spare disk allocated.

Abstract: A communication system including a first apparatus having a first storage medium, and a second apparatus for transmitting data to the first apparatus. The second apparatus has a second storage medium for storing management information of data to be transferred to the first storage medium, a communicator for communicating data with the first apparatus, an editor capable of editing the management information and a controller for making a control to transfer data stored in the second storage medium to the first storage medium by way of the communicator based on the management information edited by the editor.

Abstract: A DVD-Audio which includes a data zone for storing data to be reproduced and an information zone for storing information on the data to be reproduced. The information zone includes directories of a video title set (VIDEO_TS) and an audio title set (AUDIO_TS). The AUDIO_TS directory includes information on an audio manager (AMG) having information on audio titles. The data zone includes the audio titles each having an audio title set information (ATSI) followed by a plurality of contiguous audio objects (AOBs). The ATSI includes a plurality of audio stream attributes each having an audio coding mode, first to third quantization bit numbers, first to third sampling frequencies and decoding algorithm information relating to the number of audio channels. Each of the AOBs includes a plurality of audio packs recorded with audio data corresponding to the decoding algorithm stored in the audio stream attribute.

Abstract: A player for storage media having a number of data groups is provided, which player enables a data group to be selected in a clearly organized way, particularly when a large number of data groups is stored on such a storage medium. In this context, a read head is provided for reading out the data of a first storage medium, and a read-head control is provided for positioning the read head in the area of a data group to be played, which data group is stored on the first storage medium. In addition, an input unit is provided where, on the one hand, various storage media and, on the other hand, various data groups, are selectable on a selected storage medium to be played. A conversion device is provided, which, in response to the number of data groups on the first storage medium exceeding a predefined value, forms at least two subsets from the number of data groups of the first storage medium, each of these subsets at the input unit being selectable as a different storage medium.

Abstract: A method and system for providing enhanced editing capability of media data. Media data arriving in a continuous stream is saved in a buffer. When a user enters record mode, some data received before record mode was entered is designated for permanent storage. Similarly, all data received while in record mode is designated for permanent storage. Once the user leaves record mode, additional data received after leaving record mode is also designated for permanent storage. In due course all data designated for permanent storage is stored to a mass storage device. Any data in the buffer not designated for permanent storage will be overwritten without being stored to the mass storage device. In this manner, a media file having record handles is created. The record handles permit a user to slide the nominal entry and exit from record mode to accommodate timing and synchronization errors.

Abstract: A recording and/or reproducing apparatus for causing data recorded on a first recording medium to be stored in a second recording medium. This recording and/or reproducing apparatus includes a reproducing unit for reading out data from the first recording medium at a transmission rate faster than a standard readout rate of the first recording medium, a storage unit for storing the data read out from the first reproducing unit, a recording unit for storing the data read out from this storage unit on the second recording medium and a controlling unit for controlling the operation of the reproducing unit, storage unit and the recording unit. The controlling unit causes data to be read out from the storage unit at a transmission rate equal to the standard recording rate of the second recording medium and routed to the recording unit to record the supplied data in the second recording medium.

Abstract: A DVD-Audio which includes a data zone for storing data to be reproduced and an information zone for storing information on the data to be reproduced. The information zone includes directories of a video title set (VIDEO_TS) and an audio title set (AUDIO_TS). The AUDIO_TS directory includes information on an audio manager (AMG) having information on audio titles. The data zone includes the audio titles each having an audio title set information (ATSI) followed by a plurality of contiguous audio objects (AOBs). The ATSI includes a plurality of audio stream attributes each having an audio coding mode, first to third quantization bit numbers, first to third sampling frequencies and decoding algorithm information relating to the number of audio channels. Each of the AOBs includes a plurality of audio packs recorded with audio data corresponding to the decoding algorithm stored in the audio stream attribute.

Abstract: A method of recording data to a disc shaped record medium is provided where the data corresponds to a hierarchical file system. In the method, management information for managing the hierarchical structure of the file system is recorded to a predetermined area of the disc shaped record medium. An unused area of the predetermined area is treated as a file.

Abstract: A system for managing the number of duplicates of digital data even when a variety of recording mediums capable of repeated recording are used. The statement of the values of the number of seconds of the recording time recorded in a UTOC sector 2 of a mini-disc is differentiated between a case of recording using a conventional duplication route duplicating the audio data from a CD block (4) and a case of recording using a new duplication route of duplicating audio data from a hard disc (3) through a host controller (2). The recording time the statement of which is differentiated depending on the routes of duplication or the discrimination information of the audio data is managed by the host controller (2) to perform duplication number management.

Abstract: The present invention relates to method and apparatus of recording an audio signal composed of several tracks on a recording medium in a manner that the tracks can be distinguished each other in a recorded audio signal. The present track-synchronous recording method detects a no-sound interval longer than a predetermined time that is included in an input audio signal during recording the input audio signal, and records an audio signal following the detected no-sound interval with a different track number from that of recorded audio signal preceding the detected no-sound interval. Therefore, it is possible to individually distinguish tracks on a copy medium even though those not having any track information are copied thereto from an original at a time.

Abstract: An information recording/reproducing system has an information recording/reproducing apparatus and a portable information recording/reproducing apparatus. The information recording/reproducing apparatus has: an information copying device which, when predetermined a piece of program information is reproduced from a first recording medium, copies the piece of program information and at least one piece of program information to be subsequently reproduced, from the first recording medium to the second recording medium, and an information erasing and copying device which, when the reproducing of the piece of program information is ended, erases the piece of program information from the second recording medium, and then newly copies a piece of program information to be reproduced after said at least one piece of program information, from the first recording medium to the second recording medium.

Abstract: An information recording medium 1 is provided with: a user data recording part 3 which records user data; a random-patter-information recording part 4 which records random pattern information from a random physical phenomenon; and an authentication data recording part 5 which records, as authentication data, medium identification information created on the basis of the random pattern information detected from the random-pattern-information recording part 4 and a digital signature for each manufacturer with respect to the medium identification information.

Abstract: A method and apparatus for copying/moving data on an optical recording medium is disclosed, in which data moves or copies in one disc using a memory and data transmission to a host is omitted when the data moves or copies in one optical disc. To this end, identification information is assigned to a reserved area of read/write commands generated from the host, thereby displaying data movement status or data copying status. Thus, it is possible to reduce the data transmission time when the data moves or copies in one disc. Furthermore, even if the read/write commands in one file or the whole data to move or copy occur several times, the data transmission time such as the data movement time and the data copying time can be reduced by reducing the number of physical access times of the optical disc for the data reading/writing operation.

Abstract: A method and device for recording information signals on a partly recorded writable record carrier (11), e.g., an optical disc. An information signal represents at least one information unit. The record carrier has a recording track which includes pre-formed track position information indicative of locations for recording the information units. From the information signal, a modulated signal is generated having successive frames, each frame including a synchronizing signal. The modulated signal is recorded at a one of the locations, while maintaining a fixed relationship between the track position information and the synchronizing signals. In the event that the location is after and adjacent to an already recorded location, the recording is started at a link position (31) before the end of a last frame of the earlier recorded information signal, at a predefined distance before a first synchronizing signal (30) of the modulated signal.

Abstract: An information recording disc has a burst cutting area (BCA) for recording control information for a reproducing apparatus be removing a reflective layer of the disc in a striped shape and a data recording area for recording user data. The burst cutting area includes at least one BCA control information area. The BCA control information area has an application identifier area for identifying applications of control data, a data length area for indication data length of the control data, and an application specific data area data area recording the control data. Also, an information reproducing drive reproduces data from the information recording disc.

Abstract: An operation of a recording/reproducing portion is controlled by a control portion so as to record data in a predetermined recording region on a recording medium, and perform update recording in the predetermined recording region in accordance with occurrence of update information of the data. The control portion further has a function of controlling the recording/reproducing portion so as to record an update portion of data in a temporary storage region in a part of the recording medium and record an update flag showing whether the predetermined recording region has been updated with the update portion or has not been updated with the update portion in an update flag region, and in update recording with respect to the predetermined recording medium, successively performs operations of recording the update portion in the temporary storage region, setting the update flag in a non-updated state, recording the update portion in the predetermined recording region, and setting the update flag in an updated state.

Abstract: A ping-pong recording method and apparatus is disclosed, which allows the mixing process to proceed while listening to the sounds for all of the parts. The ping-pong recording apparatus includes a hard disk-based multi-track recorder means 10, a first mixer means 20, a second mixer means 30, and a master recorder means 40. During the ping-pong recording process, the musical data for which the parts have finished the mixing may be saved in the saving area 12 that is provided in the multi-track recorder means 10. When the mixing is retried, it may be accomplished by moving the musical data that has been saved in the saving area 12 back to the appropriate tracks and reproducing the musical data from those tracks, and by reproducing other musical data for which the parts have finished the mixing.

Abstract: An optical disc recording/reproducing apparatus detects last position information of already recorded data and information of initial data recordable capacity of an optical disc that is in a state of no further writing by a recording completion process, a calculating device that calculates data recordable capacity of a free space in accordance with the last position information of already recorded data and the information of initial data recordable capacity of the optical disc and records data in the free space after the last position of already recorded data. The optical disc recording/reproducing apparatus scans the area after the last position of the already recorded data, and when the recorded data is found in the area, the data recorded after the last position is read. Data can be recorded to or reproduced from a free space of the optical disc to which the finalizing process has been executed.

Abstract: An information reproducing apparatus is provided, which has a new cue point setting function with excellent operability for enabling new application form. Specifically, a cue point for specifying a start position for playing back a disc, and additional information or disc identification information corresponding to the cue point are stored in a backup memory. The additional information or the disc identification information is associated with the cue point and shown on a display according to a proper operation of operation buttons and a turning member. When the operation buttons and the turning member are properly operated, a system controller edits and adds the additional information, or edits the disc identification information in the backup memory. When the operation buttons and the turning member are properly operated to enter retrieval information, information stored in the backup memory is compared and retrieved, and the retrieved information associated with a cue point is shown on the display.

Abstract: A method for using an optical disc apparatus to record data onto an optical disc in multiple write sessions. The optical disc apparatus includes a delay detection circuit for detecting gaps between data written to the optical disc in successive write sessions. The method includes writing a set of first data to the optical disc, searching for an ending location of the first data, writing a set of test data to the optical disc such that a beginning location of the test data is near the ending location of the first data, using the delay detection circuit to detect a gap between the first data and the test data, and writing a set of second data to the optical disc such that a beginning location of the second data is equal to the beginning location of the test data minus a value contained in the gap.

Abstract: A method and device for recording information signals on a partly recorded writable record carrier (11), e.g. an optical disc. An information signal represents at least one information unit. The record carrier has a recording track which comprises preformed track position information indicative of locations for recording the information units. From the information signal a modulated signal is generated, and the recording track is scanned for recording the modulated signal. If recording is after and adjacent an existing recorded unit, linking information is read from an end boundary area of the existing recorded unit and used for logically generating the modulated signal. If recording is before and adjacent to an existing unit, linking information is read from a begin boundary area of the existing unit and thereafter used for logically generating the modulated signal.

Abstract: A content recording/erasing apparatus includes a hard disk. An unnecessary MPEG file recorded on the hard disk is intermittently erased part by part in parallel with a normal recording process. It is noted that prior to a start of erasing the unnecessary MPEG file, time length data relating to a total amount of an actual remaining amount of the hard disk and the unnecessary MPEG file is set in a remaining amount register, and a setting value is periodically subtracted.

Abstract: An information editing apparatus for editing recording information already recorded on a write-once recording medium such as DVD-R is provided. In this apparatus, a remaining capacity in the DVD-R is detected. Then, it is determined whether the recording information can be edited or not on the basis of the detected remaining capacity and an amount of information to be recorded in the unrecorded area by editing the recording information. Further, a result of the determination is notified.

Abstract: A method for reading a table of content (TOC) of a multi-session optical medium is provided. This method includes providing a memory for storing the TOCs of sessions having stored said digital information therein, reading TOC stored in the memory out as the change of the digital information state is adding another session, and combining the stored TOCs with the TOC of the newly-added session together, and changing the digital information state of the latest-stored session at first, and then storing the changed digital information state of the latest-stored session into the memory as the change of the digital information state is not adding another session.

Abstract: Congested rewriting in the same area is to be evaded to suppress the tendency towards occurrence of defective areas. When a stream 1 has been recorded, the last written address, representing the last written position, is stored. When recording a stream 2 next, recording is started directly following the position indicated by the last written address for the stream 1. The last written address, corresponding to the last address of the recording position, is stored. If the stream 2 is erased for recording a stream 3, recording is started not at a position directly following the last written address of the stream 1, but from a position directly following the last written address of the stream 2. When the stream 3 has reached the end of a recording area, the next following data is recorded as from a position directly following the stream 1.

Abstract: A computing unit (130) controls a servo controller (114) to move an optical pickup (111) to the innermost circumference of a mounted recording disk and acquires a recording information from a lead-in area of a first session by a recording-information acquiring unit (132). When the computing unit (130) determines that the recording disk (1) is a multi-session type according to the recording information, the computing unit (130) acquires a recording information of a second session and compares the recording information by an information determining unit (133). As a result of the comparison, if the recording information is determined as abnormal on account of copy protection, the computing unit (130) does not store the recording information of the second session, but acquires a program information based on the recording information of the first session and reproduces the program information.

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.

Abstract: Theft, distribution, and piracy of digital content on optical media (software, video, audio, e-books, any content of any kind that is digitally stored and distributed) is often accomplished by copying it directly to another disc using commonly available copy tools and recordable optical media, or the copying of media to another mass manufactured disc. Methods which cause the copy process to become lengthy and inconvenient, or which produce copies that are significantly measurably different from the original and therefore be recognizable as copies, may deter or prevent an unauthorized individual from making copies. In addition, methods which generate an intended slow-down in the read process of the media can be used to authenticate the media at run time. This offers significant advantages to content creators who wish to protect their products.

Abstract: An information reproducing apparatus reproduces a plurality of information pieces recorded on a recording medium. The apparatus has: a reading device for reading the information pieces from the recording medium in accordance with a predetermined reproduction order; a linking device for linking the information pieces read by the reading device with each other, by removing either or both of a beginning and an ending of each of the information pieces; and a converting device for converting the information pieces linked by the linking device into a reproduction signal to be supplied to an output device.

Abstract: A method of managing overwrite and a method of recording management information on an optical disc write once can make it possible to perform a logical overwrite on the disc and thus heighten the use efficiency of the disc. The method includes replacement-recording data which is requested to be overwritten in a specified area of the disc where recording is completed in another data area physically separated from the specified area in the disc, and producing and recording management information for reproducing the physically replacement-recorded data.

Abstract: A video signal recording apparatus using an information recording medium, having: a unit for identifying and detecting a WO type information recording medium and a rewritable type information recording medium; a control unit for each of the WO type information recording medium and the rewritable type information recording medium; and a display apparatus for displaying a detection result of the detecting unit. In the video signal recording apparatus using the information recording medium, file management information to form a directory is recorded as intermediate information onto the information recording medium.

Abstract: There is provided an apparatus for recording and reproducing information. The apparatus comprises a reading device to read out information recorded on a recording medium, a first recording device in which the information read out by the reading device is written, an output device to output the information written in the first recording device, a second recording device in which the information read out by the reading device is recorded, and a controller. The controller controls the reading, first recording, output, and second recording devices such that an operation specified by an operation command and directed to all the information recorded on the recording medium is performed, during an operation for recording the information into the second recording device, and the recording operation is continued.

Abstract: A method of managing overwrite on an optical disc write once, makes it possible to perform a physical overwrite on the optical disc write once and maintains the continuity of a user data area after performing the physical overwrite. The method includes replacement-recording data, which is requested to be overwritten in a specified area of the disc where recording is completed, from a rear of a user data area of the disc, and recording information in a last recordable position of the user data area, which is changed in accordance with the replacement recording operation, in a management area of the disc.

Abstract: Accordingly, an improved method for recording data on an optical medium is disclosed which includes receiving and encoding a first set of data frames by a CIRC encoder to generate a second set of data frames. A control byte is then added to each of the second set of data frames to generate a third set of data frames. The third plurality of frames of data are received and encoded at an EFM encoder to generate a section comprising a plurality of Channel frames. The control byte of a sequentially first one of the third set of data frames is replaced with a SYNC 0′ byte selected from the limited group of previously unassigned fourteen-bit combinations. The control byte of a sequentially second one of the third set of data frames is also replaced with a SYNC 1′ byte selected from the same group.

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.

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.

Abstract: The rewriting counts in respective areas of a rewritable medium are uniformized. If empty areas are present on the rewritable medium rearward of a recording start position in terms of addresses, then data is recorded in those empty areas. When no empty areas become available rearward of the recording start position, data is then recorded in empty areas forward of the recording start position. The numbers of times that data is recorded in recording areas of the recording medium are thus averaged.

Abstract: The user properly operates an operating apparatus of a system controller 100 and enters an album number and a track number of a track which he wants to erase. The system controller 100 discriminates whether the track corresponding to those numbers has been registered in a play list of an HD recording and reproducing apparatus 300 or not. If it is determined that the track has been registered in the play list, a warning is displayed on a display apparatus of the system controller 100. After confirming this display, if it is possible to erase the track, the user properly operates the operating apparatus and commits the track erasure. The system controller 100 erases the track whose erasure is desired from the HD recording and reproducing apparatus 300 and erases information corresponding to the erased track from the play list.

Abstract: An information recording apparatus for recording record information onto a record medium, on which (i) a plurality of information groups each comprising one series of the record information and (ii) management information including positional information indicating a recorded area of each of the information groups are recordable, is provided with: a detecting device for detecting the management information, which is recorded in advance on the record medium, from the record medium; a recording device for newly recording the record information onto the record medium; an outputting device for outputting an identification information to identify the information groups, which are recorded in advance on the record medium, on the basis of the detected management information while the recording device is newly recording the record information; a specifying device for specifying an erasable information from among the information groups which are identified by the outputted identification information while the recordin

Abstract: An apparatus for preventing unauthorized reading/execution which does not necessarily requires such an extra storage region, but controls adverse effects to operating environment such as OS or the like, and contribute to restricting diffusion or distribution of unauthorized copies. An original CD-ROM readable by a driver stores original data, which in part contains modified data of a different value from a predetermined value to be generated by the driver. A copied CD-ROM stores copied data of the original data, and data of such predetermined value as generated by the driver at a time of making the copy.

Abstract: An operation of a recording/reproducing portion is controlled by a control portion so as to record data in a predetermined recording region on a recording medium, and perform update recording in the predetermined recording region in accordance with occurrence of update information of the data. The control portion further has a function of controlling the recording/reproducing portion so as to record an update portion of data in a temporary storage region in a part of the recording medium and record an update flag showing whether the predetermined recording region has been updated with the update portion or has not been updated with the update portion in an update flag region, and in update recording with respect to the predetermined recording medium, successively performs operations of recording the update portion in the temporary storage region, setting the update flag in a non-updated state, recording the update portion in the predetermined recording region, and setting the update flag in an updated state.

Abstract: A recording apparatus comprising a means for reading and reproducing a program recorded on a first recording medium such as a CD; a means for recording the reproduced program on a second recording medium such as an MD having at least a program area to record programs and a management area to manage the positions of the recorded programs and the program names; a means for inputting character data representative of the program name; a means for settling the program of one unit inputted by the character input means; a means for generating a partition code; a means for storing the program name as a character string after attaching a partition code to the program name inputted by the character input means; and a control means for extracting, from the character strings stored in the storage means, the program name of the relevant program with reference to the partition code, and updating the data in the management area of the second recording medium.

Abstract: This invention relates to a recording apparatus for recording a plurality of pieces of data into a recording medium is characterized in that the recording apparatus including a specifying means for specifying that a write operation over a combination of the pieces of data is prohibited, a judgment means for forming a judgment on what is specified for a predetermined piece of data by the specifying means in response to a command to perform a recording operation over the piece of data, and a control means for controlling an operation to record the pieces of data into the recording medium in accordance with a result of a judgment formed by the judgment means; and relates to a recording method adopted in a recording apparatus for recording a plurality of pieces of data into a recording medium is characterized in that the recording method including a specifying step of specifying that a write operation over a combination of the pieces of data is prohibited, a judgment step of forming a judgment on what is specifie

Abstract: A method and device for recording information signals on a partly recorded writable record carrier (11), e.g. an optical disc. An information signal represents at least one information unit. The record carrier has a recording track which comprises preformed track position information indicative of locations for recording the information units. From the information signal a modulated signal is generated having successive frames, each frame including a synchronizing signal. The modulated signal is recorded at a one of said locations, while maintaining a fixed relationship between the track position information and the synchronizing signals. In the event that the location is after and adjacent to an already recorded location, the recording is started at a link position (31) before the end of a last frame of the earlier recorded information signal at a predefined distance before a first synchronizing signal (30) of the modulated signal.

Abstract: An information recording apparatus encodes distributed information which is music information to be recorded distributed via a network in a specific encoding scheme for allowing decode by a plurality of types of information reproducing apparatuses, records the encoded music information and also records the distributed information as-is in a distribution method thereof, and further records address information indicating a position having the encoded music information recorded and address information indicating a position having the distributed information recorded as-is in the distribution method recorded. And when the distributed information is moved to the outside after being recorded, it deletes the address information corresponding to the moved distributed information.

Abstract: In the case where data are recorded in a medium, after a specific type of a medium in which recording is performed is set, if it is detected that information is recorded on an address of specific position at which decoding information is to be located, then data at a section in which the decoding information is located are replaced with predetermined information and recording is performed. Alternatively, when data are to be reproduced from a medium, after it is discriminated that data are reproduced from a medium of a specific type, if it is determined that data are reproduced from an address of specific position at which the decoding information is to be located, then reproduction data of a section in which the decoding information is located is replaced with predetermined information and outputted.

Abstract: An information recording apparatus that records information on a recording medium includes a write unit performing a write operation on the recording medium in which data continuity is maintained at an ending and an beginning point of writing information to the recording medium, a stop instruction unit instructing a temporary stop of the write operation during the write operation, a restart instruction unit instructing a restart of the write operation, and a write stop/restart control unit controlling the write unit to stop performing the write operation in response to an instruction of the temporary stop by said stop instruction unit and controlling the write unit to restart performing the write operation in response to an instruction of the restart by the restart instruction unit.

Abstract: Large characters and numerals of a lapse time, a musical program title, or the like of a musical program under the performance recorded on a photomagnetic disc can be displayed, and an inadvertent erase of a musical program can be prevented. The TNO and lapse time of each musical program during the performance are displayed on a display unit as shown in FIG. 3 at (f). Under this condition, when a title key is depressed, the title for the TNO is displayed for a predetermined time period on the display unit as shown in FIG. 3 at (g). After the predetermined time period, the lapse time for the TNO is displayed as shown in FIG. 3 at (h). When an erase key is depressed during the performance of a musical program, a controller erases the disc management information and additional information for the TNO from a RAM storing U-TOC information, and renumbers other TNOs to update the contents of RAM.