Abstract: A data resilience component ensures data integrity by storing a data file and a copy thereof in non-overlapping sectors along the spiral information track of an optical storage medium. The number and location of sectors of the optical storage medium are determined, and, in dependence on this data, the number and location of redundant data bits required to space the stored copy from the stored data file, such that the first sector containing the stored data file and the second sector containing the stored copy are non-adjacent, is determined. The data file, its copy and the redundant bits are then sent in a data stream in their appropriate location to prevent the files from being adjacent for recording.

Abstract: According to one embodiment, the invention provides an optical disk device having a drive and a control section. The drive applies recording processing and reproduction processing to an optical disk. When the optical disk is an unformatted blank medium, if the drive detects a medium ID and a medium key block region from the optical disk, the control section judges that there is copyright protection information and outputs display information which is used for the recording processing with respect to the optical disk together with display information showing the presence or absence of the copyright protection information.

Abstract: A molding and film forming apparatus 700 molds a disc substrate from a stamper 330 formed from an optical disc disc-master 320 and forms a coating film, for example, a reflective film onto the disc substrate, thereby forming a recorded optical disc 360. A postscript apparatus 200 writes postscript information once onto an optical disc 340 formed by the molding and film forming apparatus 700. As postscript information, a laser beam is irradiated to a predetermined interval of the optical disc 340, a portion which is detected as a pit is formed, and an optical disc 350 on which postscript information 420 has been recorded is formed. Identification information which enables each optical disc 340 to be identified can be postscribed. The postscript information is recorded in a conventional format and the postscript information can be reproduced by an existing reproducing apparatus.

Abstract: On an information record medium (10, 11), record information can be recorded one time or a plurality of times by a predetermined record format. An apparatus for manufacturing the information record medium by using a stamper (27, 28) is provided with an embossed pit array forming device (20 to 26, 50) for forming on the stamper as an embossed pit array, pre-record data (SFi) which is a predetermined data row to disable overwriting on the record information in a pre-record area, which is set in advance in a range including an area (13c) assigned to information required to control a reproduction of the record information, which is recorded by the predetermined record format.

Abstract: Additional recording is performed on a recording medium without using a VAT technique. An area including the 256th logical sector is reserved at disc initialization time, and additional recording is performed from this reserved area and after. Additional recording is performed by writing packets from a logical sector immediately after a recorded area (including the reserved area), and AVDP is recorded into two places having the last logical sector number N of a packet structure and a logical sector number less than 256 sectors from N, and thus additional recording in compliance with the UDF is possible after that. At the time of finalization, AVDP is recorded in the 256th logical sector, a surplus area in the reserved area is subjected to padding to ensure wide compatibility with playback-only apparatuses.

Abstract: A data writing device for preventing a phase-change optical disc from deteriorating due to repeated writing and for preventing the rewritable number of times of the disc from decreasing. The device writes data including synchronization frames to the disc. Each synchronization frame includes a primary or secondary synchronization signal. A comparator compares a first accumulated DSV for specifying the data including the primary synchronization signal for the synchronization frame with a second accumulated DSV for specifying the recording data including the secondary synchronization signal for the synchronization frame and generates a first selection signal based on the comparison. An inverter randomly inverts the first selection signal to generate a second selection signal. A selection circuit receives the primary and secondary synchronization signals and outputs the primary or secondary synchronization signal in response to the second selection signal.

Abstract: A method of real-time recording a file with an AVI format on an optical storage medium is provided, in which the optical storage medium is a write-once type medium and employs a file system without multi-section record. According to the method, in the AVI format, a dummy chunk is used to cover a linking loss area generated between every continuous recording area, thus avoiding the AVI format being destroyed by the linking loss area.

Abstract: The present invention relates a recording apparatus and a recording method, a reproducing apparatus and a reproducing method, and a program that make it possible to easily judge whether data was recorded in a recording medium by an apparatus of own model. An own model/another model information generating unit 41 generates, for each arbitrary recording unit, own model/another model information that is information indicating that the recording unit was recorded by an apparatus of own model. A discrimination code calculating unit 42 sets VMGI and an effective management table TV as a continuous data sequence and sets a result of calculating a hash value of the data sequence as a discrimination code. A recording and reproducing apparatus 1 records the discrimination code and the own model/another model information in a management table TV area of an optical disk 51.

Abstract: An environmental load information of an information recording medium is recorded on the information recording medium so as to recycle or dispose properly an information recording medium, which is not necessary any more. The information recording medium comprises a main information area (102) for recording or reproducing information and a recording area (101) for environmental load information, which is recorded with an environmental load information of the information recording medium.

Abstract: A backup method includes reading record information of an optical disc; when the reading operation fails, utilizing an optical disc drive to read backed up record information at a plurality of specified positions in the lead-out area; checking a status of a session as a preparation for following recording; utilizing the optical disc drive to record data into a session on the optical disc; updating record information of the optical disc to generate an updated record information when recording of the session is completed and simultaneously recording the updated record information including a TOC block within the lead-in area of the optical disc to a plurality of specified positions on the optical disc according to different data types of the record information to serve as backed up record information; and ending a recording operation of the session.

Abstract: A recording medium, and a method and apparatus for recording/reproducing data in/from the recording medium are disclosed. The recording medium includes one or more recording layers, and a management area including management information, wherein the management information includes specific information indicating a presence of different format and type of recording layer in the recording medium. The management area is located at a specific recording layer. The format represents a different category in a recording layer and the type is classified by read-only or writable in a recording layer.

Abstract: A recording apparatus that performs at least recording on a recording medium including a user-data recording area, a first temporary-management-information recording area, one or plural second temporary-management-information recording areas, and area-use-state presenting areas includes a recording unit that performs the recording on the recording medium and a controlling unit that controls the recording unit.

Abstract: A high-density read-only optical disc, and an optical disc apparatus and method using the same. The apparatus and method record data on a lead-in area of a high-density read-only optical disc such as a BD-ROM (Blu-ray disc ROM (Read Only Memory)) in the form of pre-pit strings associated with an HFM (High-Frequency Modulated) groove applied to a BD-RW (Blu-ray Disc Rewritable). Moreover, the apparatus and method continuously apply the same tracking servo operation to an entire area of the same high-density read-only optical disc or rewritable optical disc. Therefore, the apparatus and method can simplify an algorithm for controlling a plurality of tracking servo operations, and avoid an increased size of the optical disc apparatus.

Abstract: An apparatus for reading subdivided information from an optical disk, which comprises a track groove and on which information is recorded along the track groove is disclosed. The apparatus includes an optical head, which irradiates the optical disk with light and generates an electric signal responsive to part of the light that has been reflected from the optical disk, read signal processing means for generating a wobble signal which has an amplitude changing with the wobble pattern from the electric signal, rise value acquiring means for sampling and holding an absolute gradient value of the wobble signal when the signal rises, fall value acquiring means for sampling and holding an absolute gradient value of the wobble signal when the signal falls, and subdivided information detecting means for determining the subdivided information by majority by comparing the values held by the rise and fall value acquiring means with each other.

Abstract: A method and apparatus for recording or reproducing data are discussed. According to an embodiment, the invention is directed to a method for recording data onto a recording medium having a recording layer, the recording layer including an inner area, a data area and an outer area, the data area having a user data area and a spare area, the user data area consisting of a plurality of clusters, the method comprising steps of: (a) recording a first data block having a temporary defect list for managing a defective area of the data area onto a temporary defect management area allocated in the inner area or the spare area; and (b) recording a second data block having a space bitmap onto the temporary defect management area.

Abstract: A big pattern for a run-in area which allows data reproduction to be performed stably even when the recording density of an optical disc is increased is provided. An optical disc according to the present invention includes tracks, each of which divided into a plurality of recording blocks. Each of the plurality of blocks includes a run-in area and a data area. In the run-in area, a prescribed run-in bit pattern is recordable; and in the data area, bit patterns having a plurality of bit lengths obtained by modulating data as a recording target in accordance with a prescribed modulation rule are recordable. In this optical disc, at least one of spatial frequencies corresponding to the bit patterns having the plurality of bit lengths is higher than a cutoff frequency. The run-in bit pattern recordable in the run-in area includes the bit patterns having the plurality of bit lengths, from which the bit pattern corresponding to the frequency higher than the OTF cutoff frequency has been excluded.

Abstract: The present invention provides an optical information recording apparatus and method capable of effectively determining appropriate recording parameters in a short time with favorable efficiency, when recording information onto an optical disk having different information recording conditions and information recording characteristics. An information recording condition or an information recording characteristic of an optical disk 1 is identified, and a recording pulse position is corrected at a correction accuracy according to the identifies information recording condition or information recording characteristic, such that a recording mark is formed in a predetermined position.

Abstract: An optical recording medium has a user data area and a lead-out area each having grooves and lands formed thereon. Wobbles are formed on at least one lateral surface of the grooves of the user data area and the lead-out area, and configured such that wobble characteristics are made different between the user data area and the lead-out area. Different types of the wobbles are formed on the grooves of either the user data area or the lead-out area, thereby preventing an optical pickup that performs recording/reproducing, from deviating from the user data area. Also, in a multi-layer optical recording medium, a whole area of a recording layer is configured to have the same condition, thereby preventing deterioration in reproducing and/or recording due to a difference in light power transmittance of another recording layer.

Abstract: A recording medium (100) is provided with: a first recording layer (L0) including a first area; and a second recording layer (L1) including a second area, wherein an edge on one side of the second area is located at a position obtained by shifting to an other side at least by a tolerance length from an area portion in the second recording layer corresponding to an edge on the one side of the first area, or an edge on the other side of the second area is located at a position obtained by shifting to the one side at least by the tolerance length from the area portion in said second recording layer corresponding to the edge on the one side of the first area, in which the tolerance length indicates an acceptable range of a relative position shift between an address which is defined on the predetermined position in the first recording layer and an address which is related to the predetermined position in the second recording layer.

Abstract: An optical information storage medium includes a lead-in area, a lead-out area, and a user data area between the lead-in and lead-out areas and in which user data is recorded. Pits are formed in the lead-in area, the user data area, and the lead-out area, and a track pitch in all or a portion of the lead-in area is different from a track pitch in the remaining area of the optical information storage medium.

Abstract: The present invention provides a method of recording control information in a recordable optical disc including at least one recording layer. In recording control information within a management area of an optical disc including at least one or more recording layers, the present invention includes providing the control information to each of the at least one or more recording layers per recording velocity, recording an information identifying a type of the corresponding control information within the control information, and recording a write strategy (WS) interworking with the type of the control information. In recording a write strategy (WS) within disc information, CLV and CAV are separately recorded, whereby it is able to efficiently cope with the record/playback of the optical disc.

Abstract: When a data recording process fails to normally complete on an information recording medium, for example, because of a power interruption, a record controlling apparatus resumes recording immediately when power is turned back on, while protecting data that was recorded prior to the power interruption. The record controlling apparatus acquires, from a file system, a list of files that underwent a simple-salvage process, generates a tentative file name unfound in the list, and then generates a file with that tentative file name having, as the content thereof, data recorded in an area indicated by a new allocation area allocation descriptor contained in backup information in a backup memory. The file system that is updated with the generated file is recorded onto an optical disk as the information recording medium. The backup information is then deleted from the backup memory. The record controlling apparatus finds applications in video cameras, video recorders, etc.

Abstract: A write once disc allowing management of a data area, a method of managing the data area of the write once disc, an apparatus recording data on the write once disc, an apparatus and method of reproducing data from a write once disc. The write once disc, includes a lead-in zone, a data area, and a lead-out zone. The write once disc includes a predetermined area storing area allocation information which indicates whether at least one section of the data area is allocated for disc defect management. In the disc and method, area allocation information specifying a structure of the data area is recorded on the disc, thus allowing a recording/reproducing apparatus to recognize the data area structure. Therefore, allocating areas, such as a spare area, for disc defect management other than an area for storing user data, to the data area is possible. The allocation of the areas for disc defect management to the data area enables effective use of the write once disc.

Abstract: A data recording apparatus automatically displays a GUI for suggesting the finalization process when the apparatus ejects a disk which has not been finalized. Since the user can eject the disk after he determines if he will make the apparatus perform the finalization process, the user, who does not fully understand the meaning of the finalization, even can decide whether he finalizes a recording medium with the DVD-R standard to enable the recording medium to be played in a device of a different standard.

Abstract: A method and apparatus for recording data at specific locations on a DVD includes selectively detecting the occurrence of wobble sync during a window computed from previous occurrences of wobble sync and eight-to-fourteen modulation sync. The method and apparatus also uses a phase-locked loop to recover the wobble signal, including wobble sync, and computes phase drift between wobble sync and eight-to-fourteen modulation sync and applies a compensation profile, compatible with a read clock phase-locked loop, to the wobble phase-locked loop.

Abstract: A high-density read-only optical disc, and an optical disc apparatus and method using the same. The apparatus and method record data on a lead-in area of a high-density read-only optical disc such as a BD-ROM (Blu-ray disc ROM (Read Only Memory)) in the form of pre-pit strings associated with an HFM (High-Frequency Modulated) groove applied to a BD-RW (Blu-ray Disc Rewritable). Moreover, the apparatus and method continuously apply the same tracking servo operation to an entire area of the same high-density read-only optical disc or rewritable optical disc. Therefore, the apparatus and method can simplify an algorithm for controlling a plurality of tracking servo operations, and avoid an increased size of the optical disc apparatus.

Abstract: User information is encoded on a record carrier in accordance with a first record carrier standard, the encoding of the user information also being in accordance with a second record carrier standard. Also, format information is provided on the record carrier for presenting the user information in a predetermined manner, at least a portion of the format information being according to the second standard and not in accordance with the first standard so that a player in accordance with the first standard and not in accordance with the second standard can not play the user information in the predefined manner.

Abstract: A write once disc allowing management of a data area, includes a lead-in zone, a data area, and a lead-out zone. The write once disc includes a predetermined area storing area allocation information which indicates whether at least one section of the data area is allocated for disc defect management. In the disc and method, area allocation information specifying a structure of the data area is recorded on the disc, thus allowing a recording/reproducing apparatus to recognize the data area structure. Therefore, allocating areas, such as a spare area, for disc defect management other than an area for storing user data, to the data area is possible. The allocation of the areas for disc defect management to the data area enables effective use of the write once disc.

Abstract: An optical disc and a method and apparatus for recording digital data streams and management information on the disc, are provided. The method includes recording a digital data stream including at least one predetermined-sized unit, each unit carrying header information and at least one packet, the header information being represented in at least one header entry, selectively appending an additional header entry based on whether a number of the at least one header entry corresponds to a number of the at least one packet, and recording an indication information that indicates whether or not the additional header entry is appended.

Abstract: A record carrier of a disc-like optically inscribable type, has a preformed track in which an auxiliary signal including a sequence of codes recorded by a preformed track modulation. The codes include a sequence of address codes specifying the addresses of the track portions in which the address codes are recorded and special codes. The special codes can be distinguished from the address codes and specify control data for controlling a recording by a recording device. The record carrier is provided with an extended area preceding a program calibration area. The extended area includes special codes representing additional control information for controlling the recording.

Abstract: A write once disc allowing management of a data area, includes a lead-in zone, a data area, and a lead-out zone. The write once disc includes a predetermined area storing area allocation information which indicates whether at least one section of the data area is allocated for disc defect management. In the disc and method, area allocation information specifying a structure of the data area is recorded on the disc, thus allowing a recording/reproducing apparatus to recognize the data area structure. Therefore, allocating areas, such as a spare area, for disc defect management other than an area for storing user data, to the data area is possible. The allocation of the areas for disc defect management to the data area enables effective use of the write once disc.

Abstract: The recording apparatus (300A) of the present invention includes a drive apparatus (320). The drive apparatus (320) includes a head section (334) for performing a recording operation or a reproduction operation for an information recording medium (100) and a drive control section (331) for controlling the head section (334). The drive control section (331) receives an update instruction including a third address indicating at least a part of the locations of the information recording medium (100) at which the first address information is recorded and the second address information.

Abstract: A recording medium comprising a recording area, the recording area includes a first area and a second area, the first area includes a frame area, the frame area includes an area in which a second synchronization code sequence and at least a portion of data are to be recorded, and the second area includes an area in which a third synchronization code sequence and a fourth synchronization code sequence are to be recorded.

Abstract: An information recording medium includes a lead-in area and a data area for storing contents information. The lead-in area includes a first lead-in information area and a second lead-in information area. The first lead-in information area corresponds to a first playback mode. The second lead-in information area corresponds to a second playback mode different from the first playback mode. The first lead-in information area has a first depth and is designed for storing lead-in information related to the contents information stored in the data area. The second lead-in information area includes pre-pits having a second depth greater than the first depth. The pre-pits represent predetermined information, such as information of copyright protection, related to the contents information stored in the data area.

Abstract: A recording medium for recording information, a recording apparatus and a recording method, and a reproduction apparatus and a reproduction method. The recording medium includes: a first area for recording contents data of the recording medium by a predetermined code; a second area other than the first area; wherein the second area includes a block with added 16-byte parity into medium ID information, wherein the block is written multiply.

Abstract: A high-density optical disc such as BD-RE (Blu-ray Disc Rewritable) or BD-ROM, and a recording/reproducing method thereof are disclosed.

Abstract: A method for writing data to an optical storage medium which includes a storage space with blocks having hardware addresses (HA). The storage space includes a pre-embossed area, and the data to be written includes data addresses (DA). Data having data addresses DA=X are stored in storage space blocks having hardware addresses HA=X?, wherein ? is an integer equal to 1 or more.

Abstract: When a hybrid type next-generation DVD is loaded in the optical disc device, first, a red laser is turned on and parameter value and a lead-in information with respect to a DVD layer are acquired. The acquired information is stored in a memory. Next, a blue laser is turned on, parameter value and a lead-in information to a HDDVD layer are acquired, and the acquired information is stored in a memory. Then, the HDDVD layer is reproduced while lighting of the blue laser beam is maintained. Then, when a jump instruction to the DVD layer is inputted, the parameter value for the DVD layer is read from the memory and set to a process system. And the lighting laser is changed to the red laser and reproduction of the DVD layer is performed based on the lead-in information of the DVD layer stored in the memory.

Abstract: A recording medium is disclosed. In the recording medium, address information is recorded in advance, one bit of the address information recorded is represented by a modulated wobble signal obtained by modulating each of a predetermined number of modulation unit sections of a wobble waveform, and a groove is formed in association with the modulated wobble signal, wherein, in converting the one bit of the address information into a chip sequence in which a predetermined number of chips continue, the modulated wobble signal is adapted such that a code sequence is inverted when the one bit is a first value and is not inverted when the one bit is a second value, and the modulated wobble signal is generated by modulating a wobble waveform in a modulation unit section according to a value of each of the chips of the chip sequence.

Abstract: A digital data recording/reproducing method includes the steps of: interleaving data on a PI code for each PI code of a 208-row ECC block; and converting a short burst error into random errors by dispersing errors on the PI codes. Moreover, the digital data recording/reproducing method increases correction capability against several bytes to several tens bytes of errors generated at random without changing burst error correction length by performing this processing for respective PI codes by using interleave rules that are different as much as possible from one another.

Abstract: In a recordable data storage medium on which property data was recorded after having been modulated and on which data that is decodable by a cryptographic key to be generated from the property data was recorded, the property data was preferably modulated by a different method from that applied to a read-only data storage medium. Then, an optical disc drive, having no ability to distinguish the recordable data storage medium from the read-only data storage medium, cannot read the recordable data storage medium. Consequently, a greater number of drives should be equipped with the function of recognizing the type of a given data storage medium and the copyright protection function should be consolidated.

Abstract: A method of recording information on and/or reproducing information from an information storage medium that includes a user data area in which user data is recorded and which has first sync patterns and an additional data area located in at least one of areas before and after the user data area includes forming second sync patterns used in the additional data area which are different from the first sync patterns used in the user data area.

Abstract: A method of recording information to a read-only optical information storage medium comprising a plurality of areas, including: recording data in at least one of the plurality of areas in the form of pits in a first pit pattern; and recording data in others of the plurality of areas in the form of pits in a second pit pattern different from the first.

Abstract: A recording medium, such as a high-density and/or read-only recording medium, such as BD-ROM, which includes an identification information, which can identify whether optional information, such as copy protection information, is needed or not for the playback of contents stored on the recording medium, and to methods and apparatuses for forming, recording, and reproducing data on the recording medium.

Abstract: A recording medium, such as a high-density and/or read-only recording medium, such as BD-ROM, which includes an identification information, which can identify whether optional information, such as copy protection information, is needed or not for the playback of contents stored on the recording medium, and to methods and apparatuses for forming, recording, and reproducing data on the recording medium.

Abstract: An information storage medium has user data areas and additional data areas, and sync patterns to distinguish the additional data areas from the user data areas. The information storage medium includes a user data area in which user data is recorded and an additional data area located in at least one of areas before and after the user data area. Second sync patterns used in the additional data area are different from first sync patterns used in the user data area.

Abstract: A data reproducing method for reproducing data, upon an optical disk of rewritable type, having an alternated block management area, a data area, on which recording/reproducing of the information is conducted by a unit of block, and an alternation area, on which recording/reproducing of information including a defective sector therein is conducted by the unit of block, through an information recording/reproducing apparatus enabling to execute Read Modify Write operation thereon, comprising the following steps of, in case where said alternation areas are in a plural number thereof when executing Read Modify Write operation onto said optical disk of rewritable type: executing reproducing on said data area including the defective sector therein, by only one (1) time; executing reproducing on said alternation area, thereafter, so as to hold data reproduced; and thereby reproducing the data. With this, it is possible to increase speed (i.e.

Abstract: A method and device for recording multiple information volumes on a record carrier, usually called multi-session recording, has a mapping unit (31) for opening a session by recording intro data including a first buffer zone at the beginning of the start zone of the volume, and a session control block (SDCB) in a remaining blank area of the start zone after the buffer zone. The session control block includes volume data indicative of the status and the contents of the session. The session is closed by recording session control data indicating that the information volume is closed in the remaining blank area, and closure data after the last user information recorded in the data zone for constituting the end zone of the volume. Further, the device has a detecting unit (32) for retrieving the session control block from said start zone.

Abstract: Information recording media 101 and 102 usable for either a first recording density D1 or a second recording density D2 each include a user data area 106 in which user data is to be recorded, a first defect management information area 108 in which first defect management information for managing a defect area in the user data area is to be recorded, and a second defect management information area 109 in which second defect management information having an identical content to that of the first defect management information is to be recorded. The first and second defect management information areas 108 and 109 are located such that angles ?1 and ?2 made by start blocks thereof fulfill the relationships of 150°??1?210° and 150°??2?210° (?1: in the case of the first recording density, and ?2: in the case of the second recording density).

Abstract: A writable optical disc has at least two chapters comprising a first chapter and a second chapter. Management data including a partition address is written in a management area in each chapter, and information is written in an information recording area after management area in the first chapter. A partition data is written in a partition area after the information recording area of the first chapter. The partition data is erased when writing the second chapter, so that the first chapter is discriminated from the second chapter, and a partition data is written in a partition area of the second chapter after writing of information in an information recording area thereof.