WO1998014938A1 - Procede d'enregistrement et de lecture servant a enregistrer des donnees audiovisuelles sur des disques et a lire ces donnees a partir de disques, enregistreur et lecteur de realisation de ce procede, disque d'enregistrement d'informations et systeme processeur d'informations - Google Patents
Procede d'enregistrement et de lecture servant a enregistrer des donnees audiovisuelles sur des disques et a lire ces donnees a partir de disques, enregistreur et lecteur de realisation de ce procede, disque d'enregistrement d'informations et systeme processeur d'informations Download PDFInfo
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- WO1998014938A1 WO1998014938A1 PCT/JP1997/003473 JP9703473W WO9814938A1 WO 1998014938 A1 WO1998014938 A1 WO 1998014938A1 JP 9703473 W JP9703473 W JP 9703473W WO 9814938 A1 WO9814938 A1 WO 9814938A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
- H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
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- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
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- G11B2020/1218—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc
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- G11B2020/1291—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting serves a specific purpose
- G11B2020/1294—Increase of the access speed
- G11B2020/1295—Increase of the access speed wherein the focus is on the read access speed
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Definitions
- the present invention relates to an information recording disk for recording digital data including AV data, a recording method thereof, a reproducing method, a recording apparatus, and a reproducing apparatus. , And information processing systems. Background art
- optical disk for recording information such as computer data, for example, there is a PD.
- PD is a rewritable optical disk using the phase change method, and data is recorded and reproduced in sector units.
- a sector in which such data cannot be normally recorded and reproduced is called a defective sector, and such a defective sector is generally replaced and recorded using a linear replacement method.
- the linear replacement method guarantees the reliability of input data by setting a large number of alternative areas in a specific area on the disk and, if a defective sector is detected, replacing the data in an appropriate sector in the alternative area. It is.
- this problem is particularly prominent. For example, if a defective sector occurs on the innermost circumference of the disk and a replacement area is provided on the outermost circumference of the disk, the head moves from the innermost circumference of the disk to the outermost circumference in accessing the replacement area, so that several hundred millimeters are required. A second seek time will occur. Since video requires picture playback at 30 frames per second, if a seek time of several hundred milliseconds occurs, the video being played will be interrupted.
- the present invention provides a data recording method and a recording apparatus capable of real-time recording of AV data on a rewritable optical disc and continuous reproduction of recorded AV data, and a reproducing method thereof. It is an object of the present invention to provide a playback device, an information recording disk thereof, and an information processing system including the same. Disclosure of the invention
- the recording method according to the present invention provides an information recording disk on which data is recorded and reproduced in sector units.
- a recording method of an AV file including AV data comprising: determining whether input data is AV data; and recording data allocated to record the input data. Detecting a defective sector existing in an area; and allocating a defective event including the defective sector when the input data is determined to be AV data and a defective sector is detected from the data recording area. Recording the AV data in a continuous sector while skipping the defect extent; and allocating a continuous area in which the sector in which only the AV data is recorded is allocated as one AV extent. And when the information recording disk includes a defective sector in the data recording area.
- the defective sector only a sector in which an address defect is detected in a data recording operation may be detected.
- the defective sectors may include a sector in which an address defect is detected in a data recording operation and a sector in which a data defect is detected in a data verification operation.
- the defect extent may be allocated in ECC block units.
- the AV file does not include AV data, and may further include a step of allocating a padding extension.
- the method may further include a step of recording attribute information for identifying the AV file containing the AV data as a part of file management information.-
- File management information in a format that corresponds one-to-one with each extent that makes up the V-file
- the method may further include recording as part of the information.
- a recording apparatus is a recording apparatus that records AV data in an information recording in which data is recorded and reproduced in sector units.
- the recording apparatus determines whether input data is AV data.
- the defective sectors may include a sector in which an address defect is detected in a data recording operation and a sector in which a data defect is detected in a data verification operation.
- An information processing system is an information processing system including the recording device described above and a control device that controls the recording device, wherein the information processing system detects the recording of an AV file, Means for allocating the defective sector as a defective extent, and means for allocating, as an AV extent, a sector in which the recording apparatus has continuously recorded only AV data, wherein the information recording disk has a defective sector in the data recording area. Is recorded, an AV file including a defective extent including the defective sector and one or more AV extents having a plurality of continuous sectors is recorded, whereby the object is achieved.
- the control device When using an information recording disk in which an ECC block has a plurality of sectors, the control device reads the defective extent in units of ECC blocks including a defective sector. May be attached:
- control device may further include means for allocating a padding dentist that does not include AV data as a part of the AV file.
- control device further comprises also be Yo Le a means for recording attribute information for identifying the AV file including the AV data as part of the file management information, 3 the control instrumentation ⁇ , the defect
- the extent may further include means for recording the attribute information for identifying the AV extent in a format corresponding to each extent in the AV file as one part of the file management information.
- the control device further comprises means for setting, in the recording device, an allowable value of the total number of sectors to be skipped due to detection of a defective sector in the recording operation of the AV data.
- the recording apparatus further comprises: means for notifying the control means of the detection of the defective sector including the position information of the defective sector each time a defective sector is detected during the recording operation of the AV data.
- a unit may be provided for setting a new recording start position of AV data in the recording device each time a detection of a sector is notified.
- a reproduction method is a reproduction method for performing data reproduction from the information recording disc on which the AV file is recorded by using the above-described recording method.
- the method includes a step of ignoring the position information of the recorded defective sector and executing a continuous data reproducing operation without performing a recovery process even if an error occurs during the data reproducing. Achieved.
- the playback device of the present invention is a playback device that executes data playback from the information recording disc on which the AV file has been recorded by using the above-described recording method.
- An information recording disc is an information recording disc in which an AV file including AV data is recorded and reproduced in sector units, and the AV file includes a defective sector in a data recording area allocated to file recording.
- the defective sector may include a sector in which an address defect has been detected in a data recording operation and a sector in which a data defect has been detected in a data verification operation.
- the above-mentioned AV file may include a padding extent that does not contain AV data-
- Attribute information for identifying the AV file containing the AV data may be further recorded as a part of the file management information.
- the defect extent—attribute information for identifying the AV extent may be further recorded as a part of file management information in a format corresponding to each extent constituting the AV file on a one-to-one basis.
- FIG. 1 is a flowchart showing an AV data recording operation of the present invention.
- FIG. 2 is a flowchart showing an operation of recording an AV file including creation of file management information.
- FIG. 3 is a diagram showing a data structure of a file and file management information.
- FIGS. 4A to 4D are diagrams showing the physical structure of an optical disc such as a DVD-RAM, etc. c FIG.
- FIG. 6 is a diagram showing the structure of a physical sector.
- FIG. 7 is a configuration diagram of the ECC block.
- FIG. 8 is a diagram showing a directory structure.
- FIG. 9 is a diagram showing a recording state of an AV file.
- FIG. 10 is a data structure diagram of the allocation descriptor.
- FIGS. 11A to 11B are diagrams showing the interpretation of the upper two bits of the extent length included in the allocation descriptor.
- FIG. 12 is a diagram showing a recording state of a disc on which an AV file and a computer file are mixedly recorded.
- FIG. 13 shows a data structure for free space management in the recording of an AV file.
- FIG. 14 is a flowchart showing a method of reproducing an AV file.
- FIG. 15 is a block diagram showing the configuration of the information processing system of the present invention.
- FIG. 16 is a diagram showing a protocol between a control unit and a disk recording drive when AV data received from a broadcast wave is recorded in real time on an information recording disk.
- FIG. 17 is a diagram showing a protocol between the control unit and the disk reproduction drive in the operation of reproducing the AV data recorded on the information recording disk.
- FIG. 18 is a block diagram showing another configuration of the information processing system of the present invention.
- Fig. 19 shows the protocol between the control unit and the disk recording drive when asynchronously recording AV data received via the Internet on an information recording disk.
- FIGS. 2OA to 2OB are diagrams showing processing contents executed by the control unit and the microphone processor in the real-time recording of the AV data.
- FIG. 21 is a diagram showing the content of processing executed by the control unit in asynchronous recording of AV data.
- FIG. 22 is a diagram showing an example of a file / directory structure.
- Fig. 23 is a diagram showing the data structure of the main file management information defined in the ISO 13346 standard and its logical relationship.
- Fig. 24 is a diagram of defect management data used for recording nyputer files.
- FIG. 25 is a diagram showing the data structure of the ICB tag.
- FIG. 26 is a diagram showing a data structure of a flag field included in the ICB tag. BEST MODE FOR CARRYING OUT THE INVENTION
- the DVD-RAM disk has a read-in area, a data area, and a It consists of one door area. Digital data is recorded in each area,
- FIG. 6 shows the structure of a sector.
- Data to be recorded in each sector is optically recorded by a phase change recording method as recording marks on lands and groups, and the physical address corresponding to each sector is physically recorded as a pit in the header area. . 2 Kbyte data is stored in the sector.
- an ECC (Error Correcting Code) process which is a process of adding a parity code for error correction, is performed with 16 sectors as one group. This group is hereinafter referred to as ECC block.
- DVD-RA.M doubles the amount of information that can be exchanged for DVD-RA.M by allowing data to be recorded not only in the land but also in the group. It is a disk medium more suitable for recording video information.
- the data area is further divided into 24 zones from 0 to 23, and in each zone, data is recorded in physical units of 24048 bytes.
- a defect management area (DMA) is provided in the lead-in area and the read-out area, and the replacement location information of the ECC Buccou which is replaced by the linear replacement method is recorded. Will be.
- each zone of the data area includes a user area for recording user data and an alternative area for replacing a defective sector.
- the physical sector of the user area is assigned a logical sector number (LSN) in order from the inner circumference. That is, a volume area for recording user data is configured as shown in FIG. 4D.
- LSN logical sector number
- Fig. 5 shows the structure of the volume space composed of the user area power of each zone.
- a volume structure for recording a disk as a logical volume is recorded on the inner and outer peripheries, respectively.
- a partition space in which a user records a file is allocated between them.
- a logical block number (LBN) is assigned in sector units from the first sector.
- Figure 8 shows the directory structure after the AV file is recorded: directory A below the directory, file B and the AV file under directory A. .
- C2 in FIG. 3 shows the data structure of the partition question data in which the file shown in FIG. 8 is recorded.
- Space bitmap descriptors are recorded in LBN 0 to 79.
- This single bitmap descriptor has a space bitmap indicating whether each sector can be allocated.
- the operation ip (x) performs the integer part of X
- the operation rem (a, b) performs abXip ( When defined as a / b), the allocation information of the sector having LBN 's is registered in bit rem (s, 8) of Byte ip (s / 8) in the space bitmap.
- this bit value is 1, the sector is unallocated, and when it is 0, it is allocated.
- the bits corresponding to the unallocated sectors from LBN 84 to 583, 586 to 3584, 3888 to the end are set to 1 respectively.
- the file set descriptor is recorded in LBN 80.
- the termination descriptor indicates the end of the fileset descriptor.
- the file entry is recorded in LBN 82.
- the IS ⁇ 1 3346 standard requires a rewritable disc in addition to a read-only disc.
- file entry various attribute information unique to the file and the recording position of the file are recorded.
- directory the file name of the file included in the directory and the location information of the file entry are recorded.
- the file entry stores the recording address of the file existing in the partition space in the allocation descriptor file. Indicated by one field.
- C 6 shows the structure of the file entry.
- the descriptor tag is used to determine a descriptor such as a file entry descriptor or a base bit map descriptor.
- a descriptor such as a file entry descriptor or a base bit map descriptor.
- 261 indicating the file entry is described as the descriptor tag. .
- the ICB tag is for indicating attribute information about the file entry itself.
- FIG. 25 is a diagram showing the structure of the ICB tag
- FIG. 26 is a diagram showing the structure of the flag field of the ICB tag.
- FIG. 25 there is a 2-byte flag field at RBP 18 of the ICB tag.
- the ninth bit of the flag field is assigned a flag indicating whether or not it is an AV file. When it is identified from this flag that the file is an AV file, AV data is recorded in the sectors constituting the file.
- Extended attributes describe attribute information that is more advanced than the content specified in the attribute information field in the file entry.
- the allocation descriptor manages the area of consecutive sectors as one extent. As shown in FIG. 10, the allocation descriptor has an extension length and its position information.
- Figure 11A shows the interpretation of the upper two bits of the extent length in the allocation descriptor of a non-AV file, which indicates whether the extent is allocated or recorded. be able to.
- Figure 11B shows the upper 2 bits of the extent length included in the location descriptor of the AV file.
- Figure 22 shows an example of the file / directory structure.
- the oval indicates the directory, and the rectangle indicates the file.
- the DVD-VIDEO directory also has three final files: -Movieel.VOB, ovie2.VOB, ovie3.V eB.
- Figure 23 shows the logical relationship of the data in the file management information according to the IS01 3346 standard-
- the recording position of a file is stored and managed using information called a file entry.
- the recording position of the VOB file entry is stored as a File Identify Descriptor in the DVD-VIDEO directory file.
- the recording position of the file entry for the DVD-VIDEO directory file is stored as a file identification descriptor in the ROOT directory file.
- the recording position of the file entry for the ROOT directory file is stored in the file set descriptor (File Set Descriptor).
- the file group descriptor is recorded at a predetermined position as a part of the file management information. From such a structure, the recording position of the target file can be obtained by starting with the reference to the file group descriptor and then entering the file entries sequentially from the ROOT directory according to the directory hierarchical structure.
- the directory file has a plurality of file identification descriptors, and each file identification descriptor includes a file managed by the directory or a recording address and a file name of a directory file.
- a linear displacement method is employed as a defect management method.
- the linear rehabilitation method first, the ninja data is recorded in the user area. If a defective sector is detected during this recording due to the detection of an address error or a verify error, the ECC block containing the defective sector is recorded in the alternative area shown in Fig. 4C, and the replacement of the ECC block is performed. Position information is recorded as defect management information in a defect management area (DMA) in the lead-in area and the read-out area.
- DMA defect management area
- the defect management area includes a disk definition sector and a defect list.
- the disk definition sector position information of the defect list is stored: the defect list is, ECC to replace the first address (address A and address C) Toko of ECC Bukokku the ECC block including the defective sector A defect entry having a pair of the first address of the block (address B and address D) is included.
- Such a defective sector is detected at the time of formatting a disk or recording data on a disk.
- the ECC block starting at address A is replaced by the ECC block starting at address B
- the ECC block starting at address C is replaced by the ECC block starting at address D. It indicates that.
- defective sectors are centrally managed by the defect management information recorded in the defect management area.
- the AV data is data including, for example, audio and video compressed by MPEG.
- the ECC block including this defective sector is skipped and recorded from the beginning of the succeeding ECC block.
- the recording position of the ECC block including the defective sector is registered in the file entry as one accommodation descriptor.
- the position information of the defective sector is registered in the AV file file / entry using the individual location descriptor. Therefore, such a defect management method differs from the conventional linear replacement method in that the position information of the replaced ECC block is recorded in a defect management area provided in the lead-in area or the lead-art area.
- the defective sector is skipped while referring to the allocation descriptor of the file entry to reproduce the AV data, so that the disk playback drive manages the defective sector without managing the address of the defective sector. It is possible to avoid it and play AV data-
- Figure 1 is a flow chart showing a recording operation of the AV data of the present invention ⁇
- step A1 it is determined whether or not the input data is AV data (step A1). 3 This determination is based on the type of command sent from the host and the transfer of data sent from the host in the recording device. It is determined by the mode or the like. For example, when a Write-AV command is sent for recording AV data, it is determined to be AV data, and when a normal Write command is sent, it is determined to be normal computer data.
- Step A3 asynchronous recording with emphasis on reliability, such as AV data that requires real-time interrogation sent from digital video movies or digital broadcasts, or data downloaded from the Internet
- the synchronous mode is set as the data transfer mode from the host computer to the recording device, it is determined that the recording is a real-time interrogation, and the asynchronous mode is used. Is set as non-real-time recording, or depending on the type of equipment connected to this recording device, real-time recording and data transfer from digital video movie etc. to network equipment such as the Internet It can also be determined that data transfer from a non-real-time record.
- Steps A4 to A6 By recording data while skipping ECC blocks containing defective sectors as shown in Fig. 2, unlike the alternative recording of computer data shown in Fig. Even if a sector is detected, the data recording operation can be continued without performing the seek operation.- In the case of AV data recording operation where asynchronous recording with an emphasis on reliability is applied, a defect with an address error as described above If a sector is detected during data recording, the ECC block containing the defective sector is skipped and the next sector from the first sector of the ECC block is skipped. To record over data (A 9 from Step A 7). Next, by reading and verifying the recording data, if a defective sector including a data error is detected, the recording data is recorded in a subsequent ECC block (steps A10 to A1).
- the first continuous area from 592 to 3567 of unallocated LBN and the second continuous area from LBN 3888 to the last are specified in advance. Have been.
- AV data recording is performed from the first sector of the first continuous area. Then, since an addressless error was detected from the sector having LBN 1600, the ECC block (16 sectors) containing this defective sector was skipped, and the AV data was recorded in the subsequent ECC block starting from LBN 1616 I do. Following the completion of the data recording operation on the first continuous area, the data recording operation on the second continuous area starting with LBN 3888 is performed.
- the file to be recorded is an AV file: This determination is made based on, for example, an application program, an extension of a file name given by a user, or the like, a file attribute, and the like.
- the file is file management information such as a directory file or a data file for a ninhinita
- the file recording operation and the registration of the file management information are executed in accordance with the conventional ISO 3346 file system (step).
- a continuous free area of, for example, 5 MB or more in ECC block units is checked from the contents of the base bitmap (step B3). For example, in C4 of FIG.
- step B4 the position information of the area where only the AV data is recorded is used as the AV extent, and the position information of the skipped ECC block is used as the defect extent.
- this AV attribute bit is defined as the control attribute defined in the ICB tag.
- the bits corresponding to Extents A, S, B, C, and E in the space bitmap have been allocated to make the area where the AV file was recorded allocated. Is set to 0 (step B 7). For example, in C5 in Figure 3, bit 7 of byte 73, bit 7 of byte 445, bit 7 of byte 486, and bit 7 of byte 799, respectively.
- the reproduction operation may be performed using only the position information of the AV extent registered in the file entry, ignoring the defect management information recorded in the defect management area. '' In the data playback operation, Extent S and Extent E are not used because no AV data is recorded.
- each AV file '' Starts from the first sector of the ECC block, defective sectors are skipped in ECC block units, and sectors where no AV data is recorded are padded so that the AV file is allocated to the end of the ECC block.
- a padding extension filled with data is allocated.
- FIG. 14 is a flowchart showing a method of reproducing an AV file.
- the AV tropism bit is read from the file entry of the file to be played back (Step Dl) ::
- the AV attribute bit is included in the ICB tag shown in C6 in Fig. 3, and As described above, it is a contiguous bit recorded in FIG. 26, and is attribute information for determining whether or not it is an AV fanol. When this bit is 1, it indicates an AV file, and when this bit is 0, it indicates a non-AV file such as a computer file. From the value of the AVfU raw bit, it is determined whether or not the file is an AV file (step D2).
- step D3 In the case of a computer file, it is read out by the conventional method for a convenience file (step D3): On the other hand, in the case of an AV file, the application descriptor field registered in the file entry of the AV file is read, and the positional information of each AV extension included in the AV file is read in order. (Step D4). Further, it instructs the playback device to read AV data from each AV extension (step D5). At this time, the playback device ignores the substitute sector information registered in the defect list on the disk, and does not execute any recovery processing even when an address error or data error is detected during the playback operation.
- the present invention is applicable to any recording medium having a large capacity capable of recording an AV file that describes a recording / reproducing operation using a DVD-RAM disk, such as a magnetic disk or a magneto-optical disk. It is clear that similar recording and playback operations can be performed.
- the AV extent, the defect extent, and the padding extent are identified by using a part of the allocation descriptor as described in FIG. 11B. It is obvious that the present invention is not limited to information only and may be assigned to other descriptors or other bits.
- the data structure of the new location descriptor may be defined, and a field indicating the attribute information of the next sentence may be provided. ''
- the badging extent is not limited to being provided at the end of the file.
- the padding extent is allocated at the beginning or middle of the file.
- an area including a defective sector detected during the recording operation of the AV file is registered as a defect extent included in the AV file.
- a special file for managing defect extents and its file attribute information are defined, and a file consisting only of defect extents is assigned.
- a space bitmap is used as information for managing an unallocated area on the disk, but it is also possible to manage the area using a space table.
- the size of the continuous free space allocated to the recording of the AV file is set to 5 MB or more.
- the size varies depending on the buffer capacity access performance of the playback device and the like:
- the AV reservation file is registered in order to allocate a continuous free area for recording the AV file in advance, but the continuous free area is previously registered by using a new bit maptable or the like. It is also possible to assign
- FIG. 15 is a block diagram showing the configuration of the information processing system of the present invention.
- R1 is the control unit
- R2 is the MPEG encoder
- R3 is the disk recording / playback drive
- R4 is the MPEG decoder
- R5 is the video signal processing unit
- R6 is the hard disk drive
- R7 is the I / O.
- a bus R8 is an input unit
- R9 is a rewritable phase-change optical disc
- R10 is a receiver.
- the control unit R1 includes a CPUR 1a, a main memory R1d, a bus interface R1c, and a port processor bus R1b. Then, the control unit R1 performs AV file identification processing and readout as shown in FIG. 20A in accordance with the program stored in the main memory Rid.
- R3 is a micro-processor that controls the entire drive R3d, IDE (Intelligent) Drive Electronics)
- a bus control circuit R3a that controls transmission and reception of command data to and from the control unit R1 via the bus. Data recording / playback to be performed.
- the microprocessor R 3 d performs a squib recording control process as shown in FIG. 20B.
- the phase-change optical disk R 9 is the DVD-RAM disk described in the first embodiment.
- the recording area search processing of the control unit R 1 is performed by referring to the file system information stored in the main memory R 1 d read out in advance when the phase-change optical disc R 9 is mounted. Select a continuous free area for recording the file.
- the number of ECC blocks that can be skipped by the disk recording drive R3 is calculated from the file system information.
- control unit R1 Upon receiving detailed error information indicating Recovered Error, the control unit R1 issues a command "SEND SKIPPED SECTOR" requesting address information on the skipped ECC block.
- the control unit R1 determines that the file requested to be read is an AV file from the file system information.
- the control unit R1 issues a "READ A V" command to request reading of AV data from the AV extension included in the AV file ::
- the control unit R1 sequentially transfers the read data to the MPEG denier R4, so that the analog AV signal is output from the monitor or the speaker.
- data is recorded in the ECC block while skipping the ECC block including the defective sector, so that real-time recording can be performed.
- AV data from the required broadcast waves can be recorded in real time.
- the disc recording drive R3 can execute the recording operation while skipping the ECC block within the area up to the end address.
- a third embodiment of the present invention will be described with reference to a recording / reproducing apparatus for recording / reproducing data on / from the above-mentioned DVD-RA.M disc and a control system for controlling the recording / reproducing apparatus.
- the difference from the second embodiment described above is that AV data is manually input via the Internet instead of broadcast waves.Therefore, real-time interrogation is not performed, and more reliable and asynchronous recording is performed. Is rushed:
- FIG. 18 is a Bukok diagram showing the configuration of the information processing system of the present invention:
- ⁇ 1 is a control unit
- ⁇ 2 is a network drive
- ⁇ 3 is a disk recording / playback drive
- ⁇ 4 is an IPEG decoder
- ⁇ 5 is a video signal processing unit
- ⁇ 6 is a hard disk drive
- ⁇ 7 is an I / An O bus
- # 8 is an input unit
- # 9 is a rewritable phase-change optical disk
- # 10 is the Internet
- Nil is a server.
- the configuration of the control unit N1 is the same as the configuration of the control unit R1 shown in FIG.
- the control unit N1 operates according to a program stored in the main memory N1d, and performs an AV file identification process, a read position designation process, a recording area search process, a recording control process, a file control process as shown in FIG. Perform system information creation processing.
- the configuration of the disk recording / playback drive N3 is the same as the configuration of the disk recording / playback drive R3 shown in FIG.
- phase change optical disk N 9 is the DVD-RAM disk described in the first embodiment.
- FIG. 19 shows the AV data received via the internet N10 as phase-change optical data.
- the following shows the protocol between the control unit N1 and the disk recording drive N3 in the asynchronous recording operation on the disk N9:
- the recording control process of the control unit N1 issues a "WRITE & VERIFY AV (ADR2, LEX2)" command, and requests the recording of AV data in the area selected in (P301).
- ADR indicates the start address at which data recording is started
- LEX indicates the number of blocks to be recorded.
- This "WRITE & VERIFY AV @" command requests that the defect list be ignored and that if a defective sector is detected during the recording operation, the error status and address information of the defective sector be returned without performing the replacement operation.
- the disk recording drive N3 continuously records AV data in the designated area without referring to the defect list. Defective sector with address error or data error during disk drive N 3
- the control unit N1 stores the address information of the defective sector in the main memory N1d.
- the recording control processing of the control unit N1 is based on the address information stored in (P308), and the ECC block following the ECC block including the defective sector is read from the address information. Issuing the "WRITE & VERIFY AV (ADR: 3, LE ⁇ 3) ⁇ command, the data which has not been recorded yet (including the data to be recorded in the ECC block including the defective sector) is recorded on the disc. Resend to drive N 3
- the disk recording drive N3 records AV data continuously in the designated area according to the newly set head address without referring to the defect list. Upon completion of the specified data recording operation without error, the disk recording drive N3 returns a normal completion status to the control unit N1.
- the control unit N1 Prior to the recording operation of the AV data described with reference to FIG. 19, the control unit N1 requests the reading of the file system information “READ ( ADR1, LED "is issued.
- the" READ "command is executed from the sector having the address specified by the first and lame ADR while executing the alternative processing using the defect list. Requests that the number of blocks specified in is read out.
- the disk recording drive N3 when receiving the "READ" command, the disk recording drive N3 reads out the specified file system information while referring to the defect list. 2 In other words, if there is a defective block in the recording area of the file system information, the data is reproduced in ECC units from the replacement block allocated to the replacement area. 3 transfers the file system information read from the phase-change optical disk N9 to the control unit N1.
- control unit N After the recording operation of the AV data described with reference to FIG. 19 is completed, the control unit N
- the file system information creation process 1 is based on the defective section stored in (P307).
- the "WRITE Si VERIFY (ADR4, LEN4)" command requests that the file system information registered in the disk recording drive N3 be updated. I do.
- the “WRITE & VER I FY” command is a command that verifies that guest reproduction can be performed under more severe conditions than normal life after the data recording is completed. If a defective sector is detected even if the deviation of the processing and verification processing is not correct, it is registered in the defect list and the execution of alternative processing is requested. If an ECC block including the already detected defective sector exists in the specified recording area, the replacement destination is requested to execute the recording and verification operations for the ECC block.
- the disk recording drive N3 controls the data recording / verification unit N13 while referring to the defect list, and executes the specified data recording and verification processing. Then, after the disk recording drive N 3 ⁇ ⁇ normally processes the “WRITE i VERIFY” command, the normal completion status is returned to the control unit N 1.
- the recording sector is inspected after recording the AV data in order to improve the reliability of the recording data
- the data reliability exactly the same as the conventional recording method can be secured. As well as guaranteeing uninterrupted video and audio playback during data playback.
- Control unit for example, personal computer
- the present invention even if a defective sector is detected during the recording of AV data, the subsequent ECC block data including the defective sector is recorded while scanning the ECC block. As a result, since no access is made to the alternative area, it is possible to record AV data on the information recording disk in real time or to continuously reproduce the AV data recorded on the information recording disk.
- the 3 which the AV data recorded on the information recording disc can verify whether it is correctly recorded, while ensuring exactly the same data reliability as conventional recording method, a data reproducing At times, continuous playback of video and audio can be guaranteed.
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Management Or Editing Of Information On Record Carriers (AREA)
- Television Signal Processing For Recording (AREA)
- Optical Recording Or Reproduction (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69712307T DE69712307T2 (de) | 1996-09-30 | 1997-09-30 | Aufzeichnungs-/wiedergabeverfahren zur aufzeichung/wiedergabe von audio-/videodaten auf/von einer platte, aufzeichnungs- und wiedergabegerät dafür sowie informationsverarbeitungssystem |
KR1019980704146A KR100278892B1 (ko) | 1996-09-30 | 1997-09-30 | 디스크에 대한 에이 브이 데이터의 기록 및 재생에 적합한 기록 및 재생 방법, 그 기록 장치 및 재생 장치, 정보 기록 디스크 및 정보 처리 시스템 |
US09/077,473 US6292625B1 (en) | 1996-09-30 | 1997-09-30 | Recording/reproducing method suitable for recording/reproducing AV data on/from disc, recorder and reproducer for the method, information recording disc and information processing system |
EP97941275A EP0866456B1 (en) | 1996-09-30 | 1997-09-30 | Recording/reproducing method suitable for recording/reproducing av data on/from disc, recorder and reproducer for the method, and information processing system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25807896 | 1996-09-30 | ||
JP8/258078 | 1996-09-30 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/551,781 Continuation US6282365B1 (en) | 1996-09-30 | 2000-04-18 | Recording/reproducing method suitable for recording/reproducing AV data on/from disc, recorder and reproducer for the method, information recording disc and information processing system |
Publications (1)
Publication Number | Publication Date |
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WO1998014938A1 true WO1998014938A1 (fr) | 1998-04-09 |
Family
ID=17315225
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP1997/003473 WO1998014938A1 (fr) | 1996-09-30 | 1997-09-30 | Procede d'enregistrement et de lecture servant a enregistrer des donnees audiovisuelles sur des disques et a lire ces donnees a partir de disques, enregistreur et lecteur de realisation de ce procede, disque d'enregistrement d'informations et systeme processeur d'informations |
Country Status (8)
Country | Link |
---|---|
US (10) | US6292625B1 (ja) |
EP (5) | EP1096490B1 (ja) |
JP (4) | JP3098237B1 (ja) |
KR (1) | KR100278892B1 (ja) |
CN (2) | CN1296931C (ja) |
DE (5) | DE69718355T2 (ja) |
ID (1) | ID21144A (ja) |
WO (1) | WO1998014938A1 (ja) |
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