Abstract: A method of recording information in an information recording medium having a user data area and a management information area is disclosed. The method includes the steps of: (a) obtaining division information in at least a specified portion of the user data area; and (b) recording, in the management information area, information on the correspondence between multiple partial areas into which the specified portion of the user data area is divided based on the division information and multiple information parts in a management table, the information parts each storing information on the presence or absence of data.

Abstract: A method of recording control information in a recording medium, such as an optical disc, including at least one recording layer is provided Velocity information and per recording velocity write strategy (write strategy parameters) is included in control information, such that standardized control information can be uniformly applied to cope with the playback of a recorded optical disc. The method includes steps of recording, per applicable recording velocity, the control information within a management area of the at least one recording layer of the optical disc; and recording at least one write strategy information per the applicable recording velocity within the control information.

Abstract: The present invention allows the compatibility with general-purpose data recording/reproducing by use of conventional media systems, and at the same time, allows the construction of a recording/reproducing system which satisfies the demands for the increase in storage capacity, the construction of a proper management system, the compatibility with special information recording, and the solving of problems with conventional models (recording/reproducing apparatuses). The audio track and data track in the data area are managed by the second management data in the management area on the recording medium and the data track records data and the first management data for managing the se data. In addition, the audio track and the second management data are modulated by the first modulating scheme and the data track is modulated by the second modulating scheme before being recorded.

Abstract: A data-arranging method similar to that of a RAM disk is adopted for a ROM disk to make the ROM disk highly compatible with the RAM disk. According to this method, buffer areas are allocated as a data run-in and a data run-out respectively preceding and succeeding a RUB (Recording Unit Block) used as a recording/reproduction unit. In addition, at locations separated from each other in the buffer areas by a distance equal in length to a sync-data gap in successive frames in the RUB, pieces of sync data (SA) are provided so that the sync data always appears at equal intervals in a signal reproduced from the ROM disk, providing a feature advantageous to establishment and protection of synchronization. It is thus possible to implement a ROM disk that is highly compatible with the RAM disk and advantageous to a synchronization system.

Abstract: A recording medium read/write method and apparatus are disclosed. The present invention records version information of a corresponding recording medium as read/write control information within the recording medium. The version information includes write compatibility version information and read compatibility version information. The read/write apparatus efficiently performs the read/write of the recording medium with reference to the version informations recorded within the recording medium.

Abstract: An information recording medium (100) is provided with: a first recording layer (L0 layer) and a second recording layer (L1 layer) in each of which record information can be recorded, the information recording medium includes a plurality of block areas, each of which is a unit of recording the record information and each of which includes a partial recording area of the first recording layer (105a) and a partial recording area of the second recording layer (115a) located in a position facing the partial recording area of the first recording layer.

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 recording method for an optical disk drive is implemented by the following steps. First, one or more data blocks are encoded and recorded sequentially, and it detects if a buffer under run occurs. If a buffer under run occurs, the recording does not stop immediately until at least the main data of the data block being currently recorded have been recorded completely. Afterwards, it restarts to encode and record from the data block next to the data block where the recording stops. Moreover, the recording also can stops if a servo error is detected, and the data restart to encode and record from the data block where the recording stops or at least one data block preceding the data block where the recording stops.

Abstract: At startup when reproduction from a recording medium such as an optical disc is started, search time for searching for management information to manage recording states of user data is shortened to reduce startup waiting time. The present invention provides a recording/reproducing method for performing recording/reproducing onto/from a recording medium having a first recording area to record user data, a second recording area to record management information to manage a recording state of the user data, and a third recording area to record non-user data other than the management information, wherein recording position information of the newest management information within the second recording area is recorded at a predetermined position in the third recording area.

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. Diverse additional information such as disc reflectivity information, disc layer information or disc type information is efficiently recorded in a particular information field included in a data unit recorded on the burst cutting area of a high-density optical disc or a particular 1-byte address field included in an address unit recorded on the high-density optical disc so that it can be read when the high-density optical disc is loaded in an optical disc apparatus or when a data recording or reproducing operation for the high-density optical disc is carried out. Accordingly, it is possible to achieve optimal optical power control and automatic gain control or identification of a current position, while enabling a normal data recording or reproducing operation corresponding to the type of the optical disc.

Abstract: The same contents having different recording rates are recorded on a multi-layer disk. A plurality of contents or the same contents having different recording rates are independently recorded respectively in different layers of an optical disk having a plurality of recording layers. In order to record a plurality of contents or the same contents having different recording rates in parallel at that time, recording on the multi-layer optical disk is conducted by repeating an operation of dividing each content into recording units, recording a recording unit of one kind of information in a recording layer, and recording a recording unit of the other kind of information in a different recording layer.

Abstract: A user data area of the recording medium is at least partially divided into separate recording areas such that data recorded in a separate recording area is of a same type. For example, at least one of the separate recording areas may be storing managing information for managing the recording medium. Additionally, at least two separate recording areas may be for recording different types of data. For example, at least one of the separate recording areas may be storing managing information for managing the recording medium, and at least another one of the separate recording areas is for storing a copy of the data in the at least one of the separate recording areas for storing management information.

Abstract: A method of recording control information in a recording medium, such as an optical disc, including at least one recording layer is provided Velocity information and per recording velocity write strategy (write strategy parameters) is included in control information, such that standardized control information can be uniformly applied to cope with the playback of a recorded optical disc. The method includes steps of recording, per applicable recording velocity, the control information within a management area of the at least one recording layer of the optical disc; and recording at least one write strategy information per the applicable recording velocity within the control information.

Abstract: The present invention relates to a reproducing apparatus which, in a case where a burst error has occurred, corrects an error preceding a synchronization pattern detected thereafter to have less errors. A bit slip judging section 81 in a bit slip correcting section 53 calculates a bit slip correction amount and a bit slip correction position on the basis of phase error signals detected by a phase error detecting section 51, synchronization pattern signals detected by a synchronization detecting section 52, reproduced clocks and detected data. A FIFO control section 82 controls a FIFO buffer 83 on the basis of the bit slip correction amount and the bit slip correction position, to perform bit slip correction. As a result, in the case where a burst error has occurred, an error preceding a synchronization pattern detected thereafter is corrected, whereby an error reduction can be implemented. The present invention is applicable to a reproducing apparatus.

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 clock mark for extracting a clock when reproducing information from a recording medium and a synchronization mark for detection a bit-slip are recorded so that a part of the synchronization mark is identical to a pattern of the clock mark. A bit-slip detection and a clock detection are performed simultaneously with a single mark by multi-value recording.

Abstract: An audio encoding method and apparatus for electronic shock protection (ESP) function in an audio player. A method of generating a frame structure for an electronic shock protection function of an audio player, includes: encoding original data of a frame and locating the encoded data in a first area that is a start part of the frame structure; and encoding frame length information indicating a size of the encoded data in the frame, and locating the encoded frame length information in a second area that is an end part of the frame structure.

Abstract: A method of recording disc control information in a recordable optical disc including at least one recording layer is provided. Writing speed information and per writing speed write strategy are included in disc control information. The specified disc control information can be uniformly applied to efficiently cope with the record/playback of the optical disc. In configuring disc control information within a management area of an optical disc, the method includes recording a plurality of recording speed informations and a plurality of write strategies respectively associated with corresponding recording speeds within the disc control information wherein one of the recording speed informations is a basic recoding speed information.

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: An audio disk has a first audio zone and a second audio zone. In the first audio zone, both of a plurality of tracks each including a single piece of music and a first management information including first control information for allowing each track to be reproduced are recorded. The music is composed of audio data produced from either a linear PCM signal or a signal produced by applying lossless compression to the linear PCM signal. In the second audio zone, music composed of audio signal produced under lossy compression, a plurality of files each storing a signal of a single piece of music subjected to the lossy compression, and second management information including second control information for allowing each file to be reproduced are recorded. Each piece of music stored in each file corresponds to the music included in any one of the tracks in the first audio zone.

Abstract: The present invention is directed to a data recordable optical disc (2), wherein buffer areas for random access (Data Run-in DRi, Data Run-out DRo) for random access are respectively disposed before and after respective blocks (BLK, BLK1, BLK2), whereby when recording of new block is started, the block is recorded in the state where respective buffer areas overlap with each other with respect to new block and existing block so that no gap takes place. Signal patterns for Phase Locked Loop (PLL) at the time of data reproduction, Auto Gain Control (AGC), and automatic adjustment of light source power, synchronization pattern, and/or signal patterns used for generation of reproduction clock, and detection of block reproduction end, etc. are recorded within the buffer area.

Abstract: A high-density multi-layer optical disc and a method for managing layer formatting thereof. A high-density multi-layer optical disc such as a Blu-ray disc rewritable (BD-RE) dual layer includes management information, additionally recorded in a lead-in area, needed for identifying formatting status of a plurality of recording layers. After the management information is referred to, at least one unformatted recording layer is automatically formatted. Optionally, the unformatted recording layer is formatted on the basis of a formatting method selected by a user. The multiple recording layers formed on the high-density multi-layer optical disc can be conveniently and effectively formatted.

Abstract: A reproducing method and apparatus are discussed. According to an embodiment, the method includes checking whether or not a current position is a linking data area based on an identifier to identify the linking data area, the linking data area preceded and followed by a real data area and removing invalid data in the linking data area and outputting continuously the real data in the real data area before and behind the linking data area, when the identifier is detected.

Abstract: A recording and reproducing area and a reproduction-only area are formed by wobbling a groove formed in a spiral fashion to form a track to be tracked on a disk. The recording and reproducing area has address information recorded by wobbling of the groove and information recorded and reproduced by phase change marks on the track formed by the groove where the address information is recorded. The reproduction-only area has prerecorded information recorded by wobbling of the groove.

Abstract: An optical read/write apparatus causes a read/write light beam from illuminating means to strike only one side of an optical storage medium including stacked data storage layers each of which is readable/writeable separately from the other layers. In this case, the optical read/write apparatus operates so that data is read/written from/into a second data storage layer after fully recording a recordable area of a first data storage layer. Thus, light can be shone with uniform intensity across the substantially entire recordable area of the second data storage layer without using a complex read/write system even under such conditions that the transmittance to light of the first data storage layer in the recordable area may vary depending on whether any data is recorded in the recordable area.

Abstract: A recording medium, such as a high-density and/or read-only recording medium, such as BD-ROM, which contains a control information, such as copy protection information, encoded in intermittent or alternate wobbled pits, and to methods and apparatuses for forming, recording, and reproducing data on the recording medium.

Abstract: Hybrid optical disc has a DVD layer and a HDDVD layer in a laminating direction. When regional assignments as shown in FIGS. 5A and 5B are applied to these layers, regional information in the DVD layer contains “1” in the bit position corresponding to Code 2 and Code 3, and the HDDVD layer contains “1” in the bit position corresponding to Code p, Code q, and Code r+1 through r+4. Thereby, any one of contents recorded in the two layers can be reproduced in Japan, Greenland, Korea, and Southeast Asia nations.

Abstract: On a disc master DS, a record mark having a variable length according to the first data is formed at a displaced position to which the record mark is displaced, in a direction crossing the reading direction thereof, according to a wobble signal obtained by modulating the second data in a predetermined modulating method. A second start position at which the head of the second data is recorded is away from a first start position at which the head of the first data is recorded by a predetermined value.

Abstract: A recording medium, and a method and apparatus for recording data in the same are disclosed. The method for recording data in a write-once recording medium includes the steps of (a) allocating a plurality of record areas to a user data area contained in the recording medium, (b) recording file system information in a first record area from among the plurality of record areas, and changing the first record area to an unrecordable area, (c) recording user data in a second record area from among the plurality of record areas, and (d) recording file entry (FE) information capable of managing the user data recorded in the second record area in a third record area from among the plurality of record areas. Therefore, the recording medium can be efficiently used, and a preferred data record method is provided.

Abstract: This invention provides an information processing method and apparatus, which can set all extent sizes of data divisionally recorded on a disk to be equal to or larger than the minimum recording unit, and can guarantee continuous reproduction of the divisionally recorded data. Of data divisionally recorded on a recording medium (5), data which corresponds to an end portion of that data and cannot be recorded as a recording area equal to or larger than a minimum recording unit specified in the recording medium (5) due to the presence of a recording area (6) of another data, that has already been recorded on the recording medium (5), is re-recorded on a recording area equal to or larger than the minimum recording unit. At this time, new data is generated by combining data less than the minimum recording unit, and data recorded in another recording area, and the new data is re-recorded on a new recording area.

Abstract: A simultaneous recording and reproduction method for recording a first real time data in an information recording medium while reproducing a second real time data recorded in the information recording medium, including the steps of: searching for unallocated areas on the information recording medium and allocating at least one unallocated area, each having a size which is greater than or equal to a minimum size Y, as an area in which the first real time data is to be recorded: selecting at least one area in which each area includes a non-used area having a size which is less than or equal to K from among the allocated at least one area, wherein K denotes the size of non-used area which is allowed within a window having the same size as the minimum size Y: recording the first real time data in the selected at least one area; and reading the second real time data from at least one area in which the second real time data has been recorded, whereby each of the at least one area has a size which is greater than eq

Abstract: A recording medium, such as a high-density and/or read-only recording medium, such as BD-ROM, which contains a control ionformation, such as copy protection information, encoded in intermittent or alternate wobbled pits, and to methods and apparatuses for forming, recording, and reproducing data on the recording medium.

Abstract: A method of recording control information in a recording medium, such as an optical disc, including at least one recording layer is provided Velocity information and per recording velocity write strategy (write strategy parameters) is included in control information, such that standardized control information can be uniformly applied to cope with the playback of a recorded optical disc. The method includes steps of recording, per applicable recording velocity, the control information within a management area of the at least one recording layer of the optical disc; and recording at least one write strategy information per the applicable recording velocity within the control information.

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: A method for recording data on a recording medium having one or more recording layers. The method includes reading control information including a plurality of control information units for controlling recording/reproducing of data from the recording medium. The control information unit includes a recording speed, an identifier of the recording layer, and a write strategy information depending on the recording speed, where a sequence of the information units is ordered according to the recording speed. The method further provides for recording the data on the recording layer based on the read control information unit including the identifier of the corresponding recording layer on which the data is to be recorded.

Abstract: An optical disc apparatus allows an optical pickup to seek to a physical address 30000Hex, and controls high-speed CLV of a spindle motor to be 1.04-multiple speed of CLV so as to set rotational speed of the spindle motor at 1440 rpm, before reproducing information from NBCA. The optical disc apparatus acquires spindle output for the spindle motor during the CLV control, and calculates an average value of the acquired spindle output, and further stores the calculated average value. When reproducing the information of NBCA, the optical disc apparatus controls the spindle output to be the average value of the spindle output so as to control the rotational speed of the spindle motor at 1440 rpm. This makes it possible for the optical disc apparatus to reproduce the information of NBCA without using an FG.

Abstract: To reduce influence of errors on the outer periphery side of a multi-layer recording disc, a first shifted middle area is assured at a predetermined position nearer to the inner periphery side than the last position of layer on the outer periphery side of a single-sided, multi-layer recording disc, and a second shifted middle area is assured at the position of layer that opposes the shifted middle area assured on layer. A recording layer extending from layer to layer may be shifted in the first and second shifted middle areas, and an area in which errors relatively readily occur on the outer periphery side of the first and second shifted middle areas may not be used.

Abstract: In order to help maximize the capacity of an optical storage device, and increase the efficiency of addressing, a unique addressing scheme is utilized to provide addressing for an optical storage disk. Importantly, this scheme is compatible with multilayer disks and helps to minimize the potential for errors. In the addressing scheme of the present invention, the storage media is provided with a wobbled groove, which includes addressing information for the media. More specifically, the surface of the media is divided into predetermined sections, or portions, each portion having a selected number of wobble periods. Within these wobble periods, the amplitude of one single wobble period is either reduced or eliminated. The location of this reduced or eliminated wobble signal can then be determined by the readout system of the present invention and utilized to provide addressing information.

Abstract: A method of managing defects considering compatibility with a rewritable disc, a reproducing and/or recording apparatus implementing the same, a write-once recording medium therefore, and a medium including computer readable code controlling the implementation of defect management. The method includes providing a plurality of temporary defect management areas on the write-once recording medium; performing defect management using the plurality of temporary defect management areas; and when one among the plurality of temporary defect management areas is exhausted, writing full flag information indicating that the one temporary defect management area is exhausted to at least one among remaining temporary defect management areas. Accordingly, defect management can be efficiently performed.

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 sub data recorder to record sub data on an optical-disk recording medium is provided. In one example, a sub data recorder records sub data by forming marks on a reflective layer of an optical-disk recording medium to which main data is recorded as a combination of pits and lands by irradiating laser light having a writing power to the reflective layer, the sub data can be recorded stably.

Abstract: An information recording medium is provided, which comprises a plurality of recording layers and a first disc information area for storing parameters relating to access to the plurality of recording layers and formats relating to the plurality of recording layers. The first disc information area is provided in a first recording layer which is one of the plurality of recording layers.

Abstract: A multi-layer optical writable disc (D) comprises at least two layers (L1, L2, . . . ) and at least two defect management areas (DF1, DF2, . . . ). A first defect management area (DF1) is positioned on a first layer (L1) of the at least two layers at a first radial position (RP1), and a second defect management area (DF2) is positioned on a second layer (L2) of the at least two layers at a second radial position (RP2). The first radial position (RP1) and second radial position (RP2) are different.

Abstract: A recording medium, such as a high-density and/or read-only recording medium including a data area including at least two data sections and a linking area to link neighboring data sections, the linking area including user data and parity data, and to methods and apparatuses for forming, recording, and reproducing the recording medium.

Abstract: In a method for writing data to an information recording medium having a plurality of recording layers, user data is written across between a plurality of the recording layers, and data other than the user data is written in a predetermined zone of the recording layer. Thereby, since the user data is written continuously upon switching of a recording layer without data other than the user data being written, it is possible to avoid interruption of writing of the user data to the recording layers.

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: By decoding a formatted 1-77PP signal 22 outputted from a BD-ROM formatter 20 at a high speed, comparing it with original data 34 in a comparator unit 30 and checking authenticity of data from the BD-ROM formatter 20 in real time, it is possible to carry out a check of data outputted from the RD-ROM formatter in real time when exposing the 1-77PP data from the BD-ROM formatter.

Abstract: In carrying out PWM-recording on optical disks, RESYNC BYTES including a bit compensation part, RESYNC detection part, and bit synchronization part are periodically inserted in the recorded data code stream. After encoding and at the time of decoding, RESYNC BYTES are detected by detection of the RESYNC detection part. The decoder is initialized by detecting the position of the bit synchronization part, and decoding is performed satisfactorily free from error. With this configuration, even for synchronization bytes having a comparatively long portion of consecutive code values, bit resynchronization is enabled free from mis-detection caused by peak shift. Even with the recording and reproducing characteristics with an un-symmetrical unerased area of the mark and space parts, the RESYNC detection part is fixed to either mark or space and RESYNC BYTES with little influence on an unerased area can be realized.

Abstract: In carrying out PWM-recording on optical disks, RESYNC BYTES including a bit compensation part, RESYNC detection part, and bit synchronization part are periodically inserted in the recorded data code stream. After encoding and at the time of decoding, RESYNC BYTES are detected by detection of the RESYNC detection part. The decoder is initialized by detecting the position of the bit synchronization part, and decoding is performed satisfactorily free from error. With this configuration, even for synchronization bytes having a comparatively long portion of consecutive code values, bit resynchronization is enabled free from mis-detection caused by peak shift. Even with the recording and reproducing characteristics with an un-symmetrical unerased area of the mark and space parts, the RESYNC detection part is fixed to either mark or space and RESYNC BYTES with little influence on an unerased area can be realized.

Abstract: An information recording medium is provided, which comprises a plurality of recording layers and a first disc information area for storing parameters relating to access to the plurality of recording layers and formats relating to the plurality of recording layer. The first disc information area is provided in a first recording layer which is one of the plurality of recording layers.