JP4688644B2 - Drive inspection method - Google Patents

Description

  The present invention relates to a drive inspection method, and is particularly suitable for use in verifying the operation of a write-once optical disc drive.

  At present, standardization of HDDVD (High Differential Digital Versatile Disc) using a laser beam having a blue wavelength (wavelength of about 405 nm) is underway as a write-once optical disc.

  In the HDDVD standard, there are a read-only ROM (Read Only Memory) standard, a rewritable RW (ReWritable) standard, and a write-once R (Recordable) standard, and the disc area format and the type of management information are different. Also, in the HDDVD standard, information such as the disc type and compliant book information is stored in a plurality of locations so that the disc information can be easily read during reproduction. In this standard, the disk format is specified, but when the specified format information is used in the drive, the drive operation is not specified such as what information is read out and applied to the drive operation.

  In this write-once HDDVD, a border can be set for session separation. Borders in HDDVD are classified into border-out and border-in, as in DVD. Among these, unlike the DVD, information indicating whether or not additional writing can be performed can be recorded in the border-out. Note that the finalization of the session can be performed by recording information indicating that additional writing cannot be performed in the border-out. In addition, a session can be finalized by setting a terminator.

  In this write-once type HDDVD, a test writing area (drive test zone) is set in each of the data lead-in area and the data lead-out area, and after recording laser power is set using these areas, user data is recorded. Done.

  Of these two drive test zones, the drive test zone on the data lead-out area side is located on the outer periphery of the disk and the recording / reproduction characteristics are unstable, so it is difficult to use for setting the recording laser power. The recording laser power is set using only the drive test zone on the data lead-in side. However, when a file is repeatedly recorded on the HDDVD, it is assumed that the drive test zone will be used up. In the HDDVD standard, in addition to these two drive test zones, a separate operation is required. The drive test zone has been expanded. In this case, the drive test zone is expanded by a predetermined capacity to the end position of the user data recording area. Therefore, the recording capacity of user data decreases accordingly.

  When the drive test zone is expanded, information indicating that is included in the recording management information (RMD: Recording Management Data) as flag information. This RMD is normally recorded in a predetermined zone (L-RMZ: Lead-in Recording Management Zone) in the data lead-in.

  Note that the RMD is information for managing the recording state of the disc, and is updated every time file recording is performed and recorded in the L-RMZ. That is, L-RMZ is consumed every time RMD is updated. For this reason, when the update of RMD is repeated, it is assumed that the L-RMZ is used up. In order to cope with such a case, the HDDVD standard allows RMZ to be added separately in addition to L-RMZ. Here, the RMZ can be set in a border set as a session delimiter position in addition to the user data recording area.

  When the RMD is updated, the RMD before the update is invalidated and only the RMD after the update is valid. In addition, information on the position of the latest RMD is also recorded in the RMD duplication zone set for data lead-in. Therefore, the position of the latest RMD can be specified from the information recorded in the RMD duplication zone in addition to the method of following the link established between the RMDs.

  Incidentally, in the standardization of HDDVD, it has been proposed to verify the operation of the HDDVD drive.

  Among the operation verifications, in the verification of the recording operation, an important factor is whether data recording can be performed with proper signal characteristics. Another important factor is the ability to properly record file data and data lead-in data. Another important factor is the ability to properly record borders and terminators.

  In verification of the reproduction operation, an important factor is whether or not the drive can recognize the latest RMD. If the latest RMD cannot be properly recognized, the recording state of the disk cannot be grasped, and a smooth recording operation cannot be executed. For example, there is a concern that the recording operation starts from an inappropriate position.

  In this verification, an important factor is whether or not the drive test zone can be properly recognized. If this recognition is inadequate, user data may be recorded on the assumption that the normal user data capacity is maintained even though the drive test zone is expanded and the user data recording capacity is reduced. There is.

  Furthermore, an important factor in this verification is whether or not the border can be recognized properly. Borders in HDDVD are classified into border-out and border-in, as in DVD. Among these, unlike the DVD, information indicating whether or not additional writing can be performed can be recorded in the border-out. Therefore, if this cannot be properly recognized, additional writing is prohibited even though additional writing is possible, or there is a problem that additional writing is erroneously performed although additional writing is impossible. When RMZ is added to the border as described above, RMZ (B-RMZ) is set to border-in.

  Further, in the write-once type HDDVD, the size of the border differs between the inner circumference, the middle circumference and the outer circumference of the disc, and the border state in the disc is not uniform. Therefore, the drive needs to properly read the borders having different sizes from the HDDVD.

  When verifying whether the BCA, system lead-in, border status, data structure in the disk, user data, etc. can be properly recognized, the test disk is prepared for each item. There is a risk that the amount of verification becomes complicated and the verification work becomes complicated. In addition, when producing a test disc, it is necessary to provide a very ideal disc that has no errors in recording marks and recorded information. If several types of test discs are produced, the cost and time are increased accordingly. It also causes problems.

Patent Document 1 below describes that a drive is inspected using a test disk. However, the drive inspection conforming to the write-once HDDVD standard has a plurality of items, and various verifications such as a recording operation and a reproduction operation are necessary.
JP 2000-306244 A

  Therefore, the present invention is a drive inspection that can smoothly verify whether an HDDVD drive can record data with appropriate signal characteristics, and whether file data, data lead-in data, and a border and terminator can be recorded properly. It is an object to provide a method.

  Another object of the present invention is to provide a drive inspection method capable of smoothly verifying whether an HDDVD drive can properly recognize the latest RMD.

  Furthermore, an object of the present invention is to provide a drive inspection method capable of smoothly verifying whether an HDDVD drive can properly recognize whether the drive test zone is expanded.

  In addition, an object of the present invention is to provide a drive inspection method capable of smoothly verifying whether an HDDVD drive can properly recognize a border.

  Furthermore, the present invention realizes recording / playback verification of write-once type HDDVD with as few test disks as possible, reduces cost and verification time, and realizes certain compatibility between verified drives It is an object to provide a verification method that can be used.

  In view of the above problems, the present invention has the following features.

The invention of claim 1 is an inspection method for inspecting a write-once optical disc device using a recorded write-once test disc. The recorded write-once test disc has a write-once type different from the write-once optical disc device to be inspected. Test data is recorded by the optical disc device so that the entire user data area is filled, and file close data including information indicating whether additional writing is possible is recorded following the test data. Inspecting the reproduction operation of the recordable optical disc device by verifying whether the optical disc device can properly reproduce the test data from the recorded recordable test disc and whether the file close data can be properly recognized. It is characterized by.

  According to the present invention, since the test data is recorded so that the entire user data area is filled, it is possible to verify whether the user data can be properly reproduced from any area of the user data area.

  In addition, since file close data is recorded subsequent to this user data, when the drive is of a type that actually reads the file close data from this position, the reproduction characteristics are likely to be disturbed from the vicinity of the outer periphery. It is possible to verify whether the file close data can be acquired smoothly. Therefore, when this file close data is assumed to be the burst-out of the write-once HDDVD, it can be verified whether the drive can smoothly acquire a burst-out important for session division.

  According to a second aspect of the present invention, in the drive inspection method according to the first aspect, the verification of whether or not the test data can be properly reproduced is performed by reproducing the test data within a certain range near the final recording position. It is performed by checking whether or not the test data should be recorded on the recorded recordable test disk.

  According to the present invention, it is possible to verify whether user data can be acquired smoothly from a position in the vicinity of the outer peripheral portion where reproduction characteristics are likely to be disturbed. Therefore, it is possible to smoothly verify the disturbance of the reproduction characteristics due to the warpage of the disk surface.

According to a third aspect of the present invention, in the drive inspection method according to the first or second aspect, the recorded write-once test disc has information indicating that the write-once optical disc device different from the write-once optical disc device to be inspected cannot be written to The file closing data including the file closing data is recorded, and whether or not the file closing data can be properly recognized is verified by the write-once optical disc apparatus appropriately indicating information indicating that the file closing data cannot be additionally written. It is performed depending on whether it is possible.

  According to this invention, in particular, it can be verified that the file close data is set to be unable to be additionally written. Therefore, when the file close data is assumed to be the burst-out of the write-once HDDVD, it can be verified whether the drive can smoothly recognize the burst-out that cannot be written to.

According to a fourth aspect of the present invention, there is provided the drive inspection method according to any one of the first to third aspects, wherein the recorded write-once test disc is a disc by a write-once optical disc device different from the write-once optical disc device to be inspected. A burst area that holds information by intermittently erasing the recording layer along the disk circumferential direction is disposed at the innermost circumferential position, and further along the spiral track between the burst area and the user data area. A system lead-in area that holds information by arranging pit rows is arranged, and information recorded in the system lead-in area from the recorded write-once test disk is recorded by the write-once optical disk device to be inspected. The reproduction operation of the write-once optical disc apparatus is inspected by verifying whether or not the data can be properly reproduced.

  According to the present invention, it is possible to verify the characteristics at the inner circumferential position of the disc and verify whether the drive device can smoothly reproduce the system lead-in area recorded by a method different from the user data. Can do.

The invention of claim 5 is an inspection method for inspecting a write-once optical disc device using a recorded write-once test disc. The recorded write-once test disc has a write-once type different from the write-once optical disc device to be inspected. A recording management zone (RMZ) for recording information (RMD) for managing a recording state by the optical disc apparatus includes a data lead-in area, a border area at a session delimiter position, and a user data area for recording user data The management information (RMD) is set in the record management zone (L-RMZ, B-RMZ, U-RMZ) set in the data lead-in area, border area, and user data area. While maintaining the link between the management information (RMD) and the updated management information (RMD), it is updated and recorded according to the record of the user data. In addition, information for specifying the position of the management information (RMD) is recorded in the corresponding zone in the data lead-in area, and the write-once optical disc device to be inspected is the latest management information from the recorded write-once test disc. By verifying whether or not (RMD) can be properly reproduced, the reproduction operation of the write-once optical disc apparatus is inspected.

  According to the present invention, when the verification target drive is of a type that recognizes the latest management information (RMD) while following the link between the management information (RMD), the data lead-in area, the border area, and the user data area It is possible to verify whether or not the latest management information (RMD) can be properly recognized in the end while tracing the record management zones (L-RMZ, B-RMZ, U-RMZ) set in each. This processing operation is also performed when the verification target drive is of a type that recognizes the latest management information (RMD) from information recorded in another zone (RMD duplication zone) in the data lead-in area. Can verify whether the latest management information (RMD) can be properly recognized.

According to a sixth aspect of the present invention, in the drive inspection method according to the fifth aspect, the recorded write-once test disk is tested by a write-once optical disk device different from the write-once optical disk device to be inspected when setting the recording laser power. In addition to the zone that is normally set in the initial recording stage, the test zone for writing is set separately extended, and information indicating that the test zone is extended is updated at least last. The additional information is verified by verifying that the test-recordable optical disc apparatus included in the management information (RMD) can recognize that the test zone is expanded in the recorded write-once test disc. The reproduction operation of the optical disk device is inspected.

  According to the present invention, when the management information (RMD) updated last is recognizable, it is possible to properly recognize that the test zone is expanded based on the management information (RMD). Can be verified.

According to a seventh aspect of the present invention, in the drive inspection method according to the sixth aspect, the recorded write-once test disc has an area in which user data is not recorded by a write-once optical disc device different from the write-once optical disc device to be inspected. The verification of whether or not the remaining test zone can be recognized as being expanded is performed based on whether or not the write-once optical disc apparatus can properly recognize the capacity of the unrecorded area.

  According to the present invention, only by verifying the capacity of the unrecorded area, it can be verified at the same time whether the drive to be inspected can properly recognize both the start address of the unrecorded area and the expanded test zone. can do.

According to an eighth aspect of the present invention, in the drive inspection method according to any one of the fifth to seventh aspects, the recorded write-once test disc has a write-once optical disc device different from the write-once optical disc device to be inspected. Thus, a border area is set following the last user data recording position, and information indicating that additional user data can be additionally recorded is recorded in this border area, and the write-once optical disc apparatus to be inspected is recorded. However, based on the information recorded in the border area, the reproduction operation of the recordable optical disc apparatus is inspected by verifying that the recorded recordable test disc can be recognized. It is characterized by that.

  According to the present invention, it is possible to verify whether or not the border area and the information indicating whether or not the user data recorded therein can be additionally written can be properly recognized.

  According to the present invention, it is possible to inspect whether the HDDVD drive can perform data recording with proper signal characteristics, and whether file data, data lead-in data, and a border and terminator can be properly recorded.

  According to the present invention, in particular, it is possible to verify whether the border data and terminator data can be properly recorded according to the recording address.

The invention of claim 9 is an inspection method for inspecting a write-once optical disk device, wherein inspection is performed using three disks, and one of the three disks is an unrecorded write-once optical disk, A recording step of recording on a write-once optical disc with a target drive, a first inspection step of inspecting a recording state of the write-once optical disc recorded in the recording step, and one of the three discs is A recordable write-once optical disc that is recorded by a drive different from the target drive and is not recordable. The recordable optical disc that is not recordable is reproduced on the target drive, and the target drive is recorded based on the reproduced information. recording a second inspection step of inspecting the reproducing operation, one of the three discs is by a different drive than the target drive The a write once recorded write-once optical disc, said write once recordable optical disc and reproduced by the target drive, a third inspection step for inspecting the playback operation of the target drive on the basis of information reproduced It is characterized by having.

  According to the present invention, the suitability of the recording / reproducing operation of the target drive can be inspected using only three disks. In the present invention, the recording step and the inspection step shown in claims 11 and 12 can be applied as the recording step and the first inspection step. Moreover, the test disc and the inspection process shown in claim 3 and claims 4 and 5 dependent thereon can be applied as the recorded recordable optical disc and the second inspection using the same. Furthermore, the test disc and the inspection step shown in claim 9 can be applied as the recordable recordable optical disc and the third inspection using the same. In this case, the effects of the inventions of each of the applied claims are similarly achieved. Therefore, it is possible to verify a large number of items efficiently in a short time, at a low cost and with a simple operation while using only three disks.

  As described above, according to the present invention, it is possible to smoothly check whether a drive to be inspected can record data with appropriate signal characteristics, and can properly record file data, data lead-in data, and a border and terminator. Can be verified.

  In addition, it is possible to smoothly verify whether the inspection target drive can properly recognize the latest RMD.

  Furthermore, it is possible to smoothly verify whether the inspected drive can properly recognize whether the drive test zone is expanded.

  In addition, it is possible to smoothly verify whether the inspection target drive can properly recognize the border.

  Further, according to the present invention, since verification is realized by using three discs, it is possible to verify recording / reproducing operations more efficiently than when many discs are used. Further, the complexity of work and management such as disk replacement and test disk management can be avoided, and verification time can be shortened and cost increase due to disk purchase can be suppressed.

  In addition, the drive determined to be appropriate by the inspection method according to the present invention is equipped with a method of performing finalization that allows at least all-round recording and cannot be additionally written, and can additionally write to a disk that cannot be additionally written. It is recognized that the disc has a function capable of accurately discriminating. In that sense, according to the inspection method according to the present invention, it is possible to maintain compatibility between the write-once HDDVD drives that have passed the inspection method.

The significance or effect of the present invention will become more apparent from the following description of embodiments. However, the following embodiment is merely one embodiment of the present invention, and the meaning of the term of the present invention or each constituent element is not limited to that described in the following embodiment. Absent.

  Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, the present invention is applied to an inspection method for inspecting a write-once type HDDVD drive device.

  First, FIG. 1 shows a configuration of a write-once HDDVD according to the embodiment. As shown in the figure, the write-once HDDVD has a substrate 15 laminated on a substrate 11 on which a recording layer 12 and a reflective layer 13 are laminated via an adhesive layer 14, and a printed layer 16 is formed thereon. It has a configuration.

  The substrates 11 and 15 are made of polycarbonate. The substrate material is preferably a material that easily transmits laser light having a wavelength of about 400 nm used in HDDVD drives. Biodegradable materials such as polyolefin and polylactic acid can also be used as the substrate material.

  The substrates 11 and 15 are both formed by injection molding. Among these, the substrate 11 is formed using a stamper having a track pattern (pits, grooves) of a test disk. The track pattern on the stamper is transferred to the surface of the substrate 11. Both of these substrates 11 and 15 have a thickness of 0.6 mm.

  The recording layer 12 is made of an organic dye material. This organic dye material is a so-called low-to-high type organic dye material in which the reflectance of the recorded mark portion is higher than the reflectance of the unrecorded portion. The organic dye material used for the recording layer 12 may be a so-called high-to-low type organic dye material in which the reflectance of the recording mark portion is lower than the reflectance of the unrecorded portion. Moreover, a phase change type material may be sufficient and Pd-CU, Co type | system | group, Ag-Pd-Cu, etc. may be sufficient. However, the material used for the recording layer 12 is limited to a type that cannot be rewritten.

  The recording layer 12 is formed on the track pattern transfer surface of the substrate 12 by spin coating.

  The reflective layer 13 is made of a highly reflective material such as Ag. In addition, Al, Pt, etc. having high reflectivity can be used for laser light having a wavelength of about 400 nm. The reflective layer 13 is formed on the recording layer 12 by sputtering.

  FIG. 2 shows an area format of the write once HDDVD.

  The write-once HDDVD is divided into a clamp area 21, a burst cutting area (BCA) 22, a system lead-in area 23, a data area 24, and a system lead-out area 25 in order from the inner periphery.

  Predetermined information is recorded on the BCA 22 in a form according to the HDDVD-R standard. Specifically, information such as a BCA ID and a book number of a standard document to which the test disk complies is recorded by erasing the flat recording layer 12 intermittently along the disk circumferential direction. The disappearance of the recording layer 12 is performed by a method of burning the recording layer 12 using a high power laser.

  When the beam spot is positioned on the BCA 22, light and darkness is generated in the reflected light according to the disappeared portion and the non-disappeared portion of the recording layer 12. By demodulating this change in brightness, the information recorded in the BCA 22 is reproduced.

  Predetermined information is recorded in the system lead-in area 23 in a form according to the HDDVD-R standard. Specifically, information relating to physical parameters (pit size, track pitch, etc.) of the HDDVD is recorded by arranging pit rows in a spiral on the recording layer 12. Grooves are not formed in the system lead-in area 23, and only pit rows are formed.

  A spiral groove is formed in the data area 24. Various data are recorded on the groove in a format according to the HDDVD-R standard. When the HDDVD is formed as a test disk, data described later is recorded on an unrecorded groove. Further, when the recording state of the drive is inspected, data to be described later is recorded by the inspected drive. In the recordable HDDVD, since data is recorded only in the groove, the land between the grooves is formed narrow.

  The grooves meander (wobble) in the disk radial direction. The physical address is held by this wobble. Note that the recording data holds a logical address separately from the physical address.

  In the system lead-out area 24, as in the data area 24, a spiral groove is formed. Also, like the data area 24, this groove meanders (wobbles) in the disk radial direction. In the system lead-out area 24, a zone is set in a format according to the HDDVD-R standard, but normally no user data is recorded.

  FIG. 3 shows the data format of data recorded in the data area 24 of the first test disk (test disk 10) used for drive inspection. In the present embodiment, the test disk 10 is generated, for example, by recording data in the following format on an unrecorded write-once HDDVD having the above configuration. The following data format conforms to the HDDVD-R standard as described above.

  As shown, data lead-in, data (test data), border-out, and data lead-out are recorded in the data area 24 of the test disc 10.

  A drive test zone is set for data lead-in. At the time of recording test data, test writing is performed using this drive test zone, and an initial value of the recording laser power is set. Information held in the system lead-in 23 is copied and recorded in the data lead-in.

  In addition, an RMD (Recording Management Data) duplication zone and an L-RMZ (Lead-in Recording Management Zone) are set for data lead-in. In the L-RMZ, information (RMD) relating to the data recording state is recorded. In this RMD, the final recording address and the like at the time of creating the RMD are recorded. Note that the RMD is updated each time user data is recorded and added to the L-RMZ. A capacity capable of recording a predetermined number of RMDs is allocated to the L-RMZ in accordance with the HDDVD-R standard.

  In the RMD duplication zone, information related to RMD, such as information indicating the latest valid RMD and its address, is recorded. In addition, information (Unique ID) related to the drive that recorded on the test disk 10 and information such as the time (Time Stamp) when the recording was performed are recorded.

  In the present test disk 10, following the data lead-in, data (test data) is recorded so that the entire user data capacity of the data area 24 is filled, and subsequently, border-out is recorded. The test data is composed of a predetermined number of file data. Further, the information that constitutes the border-out includes information indicating “additional writing is impossible”.

  In the data lead-out, attribute information indicating that it is a data lead-out is set.

  FIG. 4 shows a data format of data recorded in the data area 24 of the second test disk (test disk 30) used for drive inspection. In the present embodiment, the test disk 30 is generated, for example, by recording data in the following format on an unrecorded write-once HDDVD having the above configuration. The following data format conforms to the HDDVD-R standard as described above.

  As shown in the drawing, data lead-in and data lead-out are recorded in the data area 24 of the test disc 30, and various data such as user data (test data) are left between them, leaving an unrecorded area of a certain capacity. It is recorded.

  A drive test zone is set for data lead-in. When the test disk 30 is formed from an unrecorded write-once type HDDVD, when user data is recorded, trial writing is performed using a drive test zone, and an initial value of the recording laser power is set. Information held in the system lead-in 23 is copied and recorded in the data lead-in. In the data lead-out, attribute information indicating that it is a data lead-out is set.

  FIG. 5 shows the data structure of the data area in the test disk 30.

  In the data lead-in, an RMD duplication zone and an L-RMZ are set. In the L-RMZ, information (RMD) relating to the data recording state is recorded as in the test disk 10.

  In this test disk 30, following the data lead-in, a user data zone, a border-out, a border-in, a user data zone, and a border-out are set in order. In addition, an unrecorded area having a certain capacity is left between the last border-out and the data lead-out.

  A predetermined number of file information of a predetermined capacity is recorded in the first user data zone. RMD related to information recorded in the user data zone is recorded in the L-RMZ of the data lead-in. Similarly, information regarding this RMD is recorded in the RMD duplication zone.

  Following this user data zone, border-out and border-in are set, and sessions are separated. Among these, the information constituting the border-out includes information indicating “possible to add”. Also, RMZ (B-RMZ) is set for the border-in. Accordingly, the data lead-in L-RMZ is closed (invalidated) so as to be linked to the B-RMZ. Information regarding this is added to the RMD duplication zone.

  Following the border-in, user data consisting of several pieces of file information having a predetermined capacity is recorded. In accordance with the recording of the file information, RMD is added to the B-RMZ in the border-in. Here, the B-RMZ is consumed by adding the RMD to a level at which the RMZ (U-RMZ) can be newly set in the user data zone. This is because U-RMZ cannot be created unless the remaining amount of RMD falls below a predetermined amount. That is, the number of pieces of file information to be recorded is set to a number that allows the B-RMZ to be consumed in this way by update addition of RMD.

  Following the recording of the file information, RMZ (U-RMZ) is set in the user data zone. Therefore, the B-RMZ in the border-in is closed (invalidated) so as to link to the U-RMZ. Information regarding this is added to the RMD duplication zone.

  Following this U-RMZ, user data consisting of a predetermined number of file information is recorded. In accordance with the recording of the file information, RMD is added to the U-RMZ in the user data zone. Information about this is also added to the RMD duplication zone.

  Following the end of the user data, a border-out is recorded. The information constituting the border-out includes information indicating “additional possible”. After such border-out, a fixed capacity unrecorded area remains.

  Following this unrecorded area, a guard zone is set in the data lead-out. Subsequently, an extended drive test zone (extended drive test zone) is set. Following this, a normal drive test zone, a disc test zone, and a guard track zone are set. As described above, in this test disc, the drive test zone is separately expanded in addition to the normal drive test zone. Information indicating that the drive test zone is expanded is held as flag information in the RMD in the U-RMZ.

  In the data lead-out, as described above, attribute information indicating that this is a data lead-out is recorded. However, no information is recorded in each zone shown in FIG. 5 in the data lead-out, and these zones may simply be set as address management information. In addition, neither the drive test zone nor the extended drive test zone is in an unused state.

  Next, an HDDVD drive inspection method will be described.

<Inspection of recording status>
FIG. 6 shows the contents of data recorded on an unrecorded write-once HDDVD by the HDDVD drive (target drive) to be inspected when the recording state is inspected.

  As shown in the figure, when the recording state is inspected, data lead-in, file data (100 files), border-in, border-out, file data (one file), border-out are stored in the data area. Terminators and data readouts are recorded in order. Note that the size (capacity) of the border-in, border-out, and terminator is a size that complies with the HDDVD-R standard. In the HDDVD-R standard, the size changes according to the arrangement position (address) of border-in, border-out, and terminator.

  After recording in this data format by the target drive, the recording state of the target drive is inspected in the inspection flow according to FIG.

  First, a write-once HDDVD recorded with a target drive is mounted on a measuring apparatus, and recording signal characteristics such as PRSNR (Partial Response Signal to Noise Ratio), asymmetry, and various parameter values related to the recording state are measured. (S101). Each measured parameter value is compared with a reference value (S102). If these parameter values are not within a certain reference value range (S103: NO), the target drive is determined as an inappropriate drive. On the other hand, if the parameter value is within a certain reference value range (S103: YES), it is determined that the target drive can perform a recording operation within a proper range of various parameter values related to the recording state (S104).

  When the inspection process is completed, the write-once type HDDVD recorded by the target drive is mounted on an HDDVD drive (reference drive) that operates properly, and the following inspection is performed.

  First, when this HDDVD is attached to the reference drive, a file data output request command is transmitted to the reference drive from the evaluation device (PC terminal, etc.) connected to the reference drive (S111). Accordingly, the evaluation device verifies the state of the file data based on the file data received from the reference drive, such as whether the number of recorded files is appropriate and whether there is an overlap between files (S112). If this verification result is defective (S113: NO), the target drive is determined as an inappropriate drive. On the other hand, if the verification result is good (S113: YES), the target drive determines that the file data can be properly recorded (S114).

  After executing the verification flow, or in parallel with the verification flow, a data lead-in data output request command is transmitted from the evaluation apparatus to the reference drive (S121). In response to this, the evaluation device compares the data lead-in data received from the reference drive with the data lead-in data that should be recorded on the HDDVD, and verifies the recording state of the data lead-in data (S122). If the verification result is bad (S123: NO), the target drive is determined as an inappropriate drive. On the other hand, if the verification result is good (S123: YES), the target drive determines that the data lead-in can be properly recorded (S124).

  Further, after executing the verification flow, or in parallel with the verification flow, an output request command for data recorded in the border and data recorded in the terminator is transmitted from the evaluation apparatus to the reference drive. (S131). In response to this, the evaluation device compares the border data and terminator data received from the reference drive with the border data and terminator data that should have been recorded on the HDDVD, and verifies the recording state of these data (S132). Specifically, the border-in and border-out data size set between sessions, the border-out data size set after the final file data, and the terminator data size set following this Verify that is appropriate. If the verification result is bad (S133: NO), the target drive is determined as an inappropriate drive. On the other hand, if the verification result is good (S133: YES), it is determined that the target drive can properly record the border and the terminator (S134).

  As described above, when the verification of each process is completed, it is finally evaluated whether or not each verification result is determined to be appropriate in S104, S114, S124, and S134, respectively (S140). If all the verification results are appropriate, the target drive can properly perform the recording operation.

  In this recording operation verification, it is confirmed with one blank disk whether the target drive has recording signal characteristics conforming to the standard, and whether the information of the border, terminator, RMZ, and data lead-in can be correctly recorded. can do.

<Reproduction state inspection 1>
FIG. 8 shows a flowchart for inspecting the playback state of the HDDVD drive using the test disk 10.

  When the test disk 10 is mounted on the HDDVD drive (target drive) to be inspected, the BCA data (BCA 22) is stored for the target drive from the evaluation device (PC terminal, etc.) connected to the target drive. (Data) output request command is transmitted (S201). If there is no response to this command (S202: NO), the target drive is regarded as an inappropriate drive. On the other hand, if there is a response from the target drive (S202: YES), the evaluation apparatus collates the BCA data received from the target drive with the BCA data (reference BCA data) that should be recorded in the BCA of the test disk 10. (S203). If the two data do not match (S204: NO), the target drive is determined as an inappropriate drive. On the other hand, if the two data match (S204: YES), the target drive determines that the BCA data can be properly recognized (S205).

  After executing the verification flow, or in parallel with the verification flow, a system lead-in data output request command is transmitted from the evaluation apparatus to the target drive (S211). If there is no response to this command (S212: NO), the target drive is regarded as an inappropriate drive. On the other hand, if there is a response from the target drive (S212: YES), the evaluation apparatus receives the system lead-in data received from the target drive and the system lead-in data that should be recorded in the system lead-in of the test disk 10 (see System lead-in data) is collated (S213). If the two data do not match (S214: NO), the target drive is determined as an inappropriate drive. On the other hand, if the two data match (S214: YES), the target drive determines that the system lead-in data can be properly recognized (S215).

  Furthermore, after executing the verification flow or in parallel with the verification flow, an output request command for user data (test data) is transmitted from the evaluation apparatus to the target drive (S221). This command is, for example, an output request command for data recorded in a certain range on the outer periphery of the disk (for example, a range that goes back by a certain capacity from the last address). In this case, the range of data to be output is specified by the address. Note that instead of a request for outputting only a part of the data as described above, a request for outputting all user data may be used.

  If there is no response to this command (S222: NO), the target drive is regarded as an inappropriate drive. On the other hand, if there is a response from the target drive (S222: YES), the evaluation apparatus collates the user data received from the target drive with the user data (reference user data) that should be recorded in the specified range of the test disk 10. (S223). If the two data do not match (S224: NO), the target drive is determined as an inappropriate drive. On the other hand, if the two data match (S224: YES), the target drive determines that the user data can be properly reproduced (S225).

  After executing the verification flow or in parallel with the verification flow, a command for inquiring the disk structure of the test disk is transmitted from the evaluation apparatus to the target drive (S231). If there is no response to this command (S232: NO), the target drive is determined as an inappropriate drive. On the other hand, if there is a response from the target drive (S232: YES), the evaluation apparatus determines the finalization format in the information regarding the disk structure received from the target drive and the finalization format that should have been set for the test disc 10. Collation is performed (S233). Specifically, it is determined whether the finalized format recognized by the target drive is border-out including information that cannot be added.

  When the finalization format received from the target drive is inappropriate (S234: NO), the target drive is regarded as an inappropriate drive. On the other hand, if the finalization format received from the target drive is appropriate (S234: YES), it is determined that the target drive can properly recognize the border-out (S235).

  Note that the collation by S233 may collate not only the finalized format but also other data structures. For example, the number of sessions existing in the data area may be checked together with the finalization format. This verifies that the drive correctly recognizes the number of sessions in the test disk.

  As described above, when the verification for each command is completed, it is finally evaluated whether each verification result is determined to be appropriate in S205, S215, S225, and S235, respectively (S240). If all the verification results are appropriate, it is determined that the target drive has passed verification using the test disk 10.

  As described above, according to the inspection according to this flowchart, it is possible to smoothly verify whether the target drive can properly reproduce from the innermost circumferential position of the disk to the outermost circumferential position and whether the border-out can be properly recognized. In addition, it is possible to smoothly verify whether the target drive can properly reproduce the data held in the BCA 22 and the system lead-in area 23. In addition, since this verification can be confirmed with only one finalized recordable HDDVD, reproduction verification can be performed very efficiently, and the cost required for disk purchase can be reduced, and the complexity of disk replacement can be reduced. It is possible to suppress the property and shorten the inspection time.

  In the above inspection flow, the collation in S203, S213, S223, S233, and S240 is performed in the evaluation apparatus. However, for this verification, for example, data received from the target drive is displayed on the monitor of the evaluation apparatus. It is also possible to display the data and the reference data that should have been recorded on the test disc 10 by the user by visually checking the data.

<Reproduction state inspection 2>
FIG. 9 shows a flowchart for inspecting the playback state of the HDDVD drive using the test disk 30.

  When the test disk 30 is mounted on the HDDVD drive (target drive) to be verified, a command for inquiring the target drive from the evaluation device (PC terminal, etc.) connected to the target drive to the target drive. Is transmitted (S301). If there is no response to this command (S302: NO), the target drive is regarded as an inappropriate drive. On the other hand, if there is a response from the target drive (S302: YES), the evaluation apparatus collates whether the information indicating whether additional writing is possible or not among the information regarding the disk structure received from the target drive is “addable” (S303). ). Specifically, it is determined whether or not the disc state recognized by the target drive is border-out including “additional recordable” information.

  When the disk structure received from the target drive is inappropriate (S304: NO), the target drive is regarded as an inappropriate drive. On the other hand, if the disk structure received from the target drive is appropriate (S304: YES), it is determined that the target drive can properly recognize that the border-out is “appendable” (S305).

  After executing the verification flow, or in parallel with the verification flow, a command for inquiring the additional write start address is transmitted from the evaluation apparatus to the target drive (S311). If there is no response to this command (S312: NO), the target drive is regarded as an inappropriate drive. On the other hand, if there is a response from the target drive (S312: YES), the evaluation apparatus collates the additional write start address received from the target drive with the additional write start address (reference start address) that should have been set in the test disk 30. (S313). If the two data do not match (S314: NO), the target drive is determined as an inappropriate drive. On the other hand, if the two data match (S314: YES), it is determined that the target drive can recognize the latest RMD and can properly recognize the additional write start address from this RMD (S315).

  Further, after executing the verification flow, or in parallel with the verification flow, a command for inquiring the remaining capacity (unrecorded capacity) that can be additionally written is transmitted from the evaluation apparatus to the target drive (S321). If there is no response to this command (S322: NO), the target drive is regarded as an inappropriate drive. On the other hand, if there is a response from the target drive (S322: YES), the evaluation apparatus collates the remaining capacity received from the target drive with the remaining capacity (reference remaining capacity) that should have been left on the test disk 30 (S323). ).

  Here, the remaining capacity is calculated in the target drive based on the additional write start address and the presence or absence of expansion of the drive test zone. That is, when the drive test zone is not expanded, the appending start address is subtracted from the final address where user data can be recorded, and when the drive test zone is expanded, the capacity used for the expansion is By further subtracting from the subtraction result, the remaining capacity of the disk is obtained. Therefore, if the target drive can recognize the write start address from the latest RMD recorded on the test disk 30 and can recognize the extension flag of the drive test zone included in the RMD, The remaining capacity can be acquired appropriately.

  If the two capacities do not match in the collation in S323 (S324: NO), the target drive is determined as an inappropriate drive. On the other hand, if the two data match (S324: YES), it is determined that the target drive can properly recognize the extension flag in the latest RMD (S325).

  As described above, when the verification for each command is completed, it is finally evaluated whether the verification results are determined to be appropriate in S305, S315, and S325 (S330). If all the verification results are appropriate, it is determined that the target drive has passed verification using the test disk 30.

  As described above, according to the inspection according to this flowchart, whether the target drive can properly recognize the latest RMD in the U-RMZ, whether the drive test zone has been expanded, -It is possible to smoothly verify whether it is possible to properly recognize that “Out” is “appendable”.

  In the above inspection flow, the collation in S303, S313, 323, and S330 is performed in the evaluation apparatus. However, for this verification, for example, the data received from the target drive is displayed on the monitor of the evaluation apparatus. It is also possible for the user to collate this data with reference data that should be recorded on the test disk 30 by visual inspection or the like.

  Further, the data format of the test disk 30 used in this processing flow can be changed as follows.

  For example, as shown in FIG. 10, border-out following the end of user data can be omitted. In this case, the target drive has no finalization flag in the latest RMD, or the area code described in the Data ID information of the final address is not a data lead-out attribute. It can be determined that the test disk is ready for additional writing. In this case as well, whether or not additional writing is possible is transmitted from the target drive to the evaluation apparatus in response to a command for inquiring about the disk structure, as in the case of S301 to S305.

  Further, the U-RMZ is not limited to one place, and may be set in the first user data zone as shown in FIG. 11, for example. In this case, the U-RMZ may not be set in the second user data zone.

  As described above, according to the present embodiment, by performing the recording state inspection and the reproduction state inspections 1 and 2 for the same target drive, it is determined whether the target drive is appropriate in both the recording operation and the reproduction operation. Can be verified.

  In particular, by using the test disk 10, it is possible to smoothly verify whether the target drive can properly reproduce from the innermost circumferential position of the disk to the outermost circumferential position and whether the border-out can be properly recognized. In addition, it is possible to smoothly verify whether the target drive can properly reproduce the data held in the BCA 22 and the system lead-in area 23.

  Also, by using the test disk 30, whether the target drive can properly recognize the latest RMD, whether the drive test zone has been expanded properly, and HDDVD can be “appendable” It is possible to smoothly verify whether or not it can be properly recognized.

  As described above, according to the inspection method according to the present embodiment, whether the target drive can perform recording properly, whether the target drive can properly recognize the finalized format of the write-once HDDVD, or recognize the HDDVD that can be written to properly. And whether the target drive can properly reproduce over the entire circumference of the disk is verified, and the drive test zone is extended to the write-once HDDVD and the HDDVD can be additionally written It is verified whether it can be recognized. Therefore, a drive that has passed the inspection method according to the present embodiment can appropriately record a finalized write-once HDDVD as long as it can be additionally written. Information can be properly reproduced from the position. Therefore, these drives can be compatible with each other. In addition, this verification can be realized by using only three disks by adopting the disk structure shown in the above-described embodiment, thereby reducing the cost and the verification time.

Needless to say, the present invention is not limited to the above embodiment. The embodiments of the present invention can be appropriately modified in various ways within the scope of the technical idea shown in the claims.

The figure which shows the layer structure of HDDVD which concerns on embodiment The figure which shows the area division | segmentation of HDDVD which concerns on embodiment The figure which shows the data format of the test disc 10 which concerns on embodiment The figure which shows the data format of the test disc 30 which concerns on embodiment The figure which shows the data format of the test disc 30 which concerns on embodiment The figure explaining the verification method of the target drive which concerns on embodiment FIG. 3 is a flowchart showing a target drive verification method according to the embodiment; FIG. 3 is a flowchart showing a target drive verification method according to the embodiment; FIG. 3 is a flowchart showing a target drive verification method according to the embodiment; The figure which shows the example of a change of the data format of the test disc 30 The figure which shows the other example of a change of the data format of the test disc 30

Explanation of symbols

10 Test disc 30 Test disc 22 BCA
23 System Lead-in Area 23
24 Data area

Claims (9)

In an inspection method for inspecting a write-once optical disc device using a recorded write-once test disc,
The recorded recordable test disc includes
Test data is recorded so that the entire user data area is filled by a write-once optical disk device different from the write-once optical disk device to be inspected, and a file close including information indicating whether additional writing is possible following the test data Data is recorded,
By verifying whether the test-recordable write-once optical disc apparatus can properly reproduce test data from the recorded write-once test disc and whether the file close data can be properly recognized, reproduction of the write-once optical disc device is performed. Check the operation,
A drive inspection method characterized by the above. In claim 1,
Verification that the test data can be properly reproduced is that the test data is reproduced within a certain range near the final recording position, and the reproduced test data matches the test data that should be recorded on the recorded recordable test disc. Done by checking what to do,
A drive inspection method characterized by the above. In claim 1 or 2,
In the recorded recordable test disk, the file close data including information indicating that write-once is impossible is recorded by a recordable optical disk device different from the recordable optical disk device to be inspected,
The verification whether the file close data can be properly recognized is performed based on whether the write-once optical disc apparatus can properly recognize information indicating that the file close data cannot be additionally written.
A drive inspection method characterized by the above. In any one of Claims 1 thru | or 3,
The recorded write-once test disc has information recorded by intermittently erasing the recording layer along the disk circumferential direction at the innermost circumferential position of the disc by a write-once optical disc device different from the write-once optical disc device to be inspected. A system lead-in area for holding information by arranging a pit row along a spiral track between the burst area and the user data area,
By verifying whether or not the recordable optical disc apparatus to be inspected can properly reproduce the information recorded in the system lead-in area from the recorded recordable test disc, the reproduction operation of the recordable optical disc apparatus is inspected. To
A drive inspection method characterized by the above. In an inspection method for inspecting a write-once optical disc device using a recorded write-once test disc,
The recorded recordable test disc includes
By a write-once optical disk device different from the write-once optical disk device to be inspected,
Recording management zones (RMZ) for recording information for managing recording status (RMD) are set in the data lead-in area, the border area at the session delimiter, and the user data area for recording user data, respectively. ,
The management information (RMD) is updated in the record management zones (L-RMZ, B-RMZ, U-RMZ) set in the data lead-in area, border area, and user data area. And updated management information (RMD) while maintaining a link, updated according to the record of user data,
Information specifying the location of the last updated management information (RMD) is recorded in the corresponding zone in the data lead-in area,
Inspecting the reproduction operation of the recordable optical disc device by verifying whether the recordable optical disc device to be inspected can properly reproduce the latest management information (RMD) from the recorded recordable test disc.
A drive inspection method characterized by the above. In claim 5,
In the recorded write-once test disc, a test zone for performing test writing at the time of setting the recording laser power by a write-once optical disc device different from the write-once optical disc device to be inspected is normally set at the initial stage of recording. The management information (RMD) updated at least lastly includes information indicating that the test zone is expanded and set separately in addition to the zone that is separately expanded,
Inspecting the reproduction operation of the write-once optical disc device by verifying whether the test-writeable optical disc device can recognize that the test zone is expanded in the recorded write-once test disc,
A drive inspection method characterized by the above. In claim 6,
In the recorded write-once test disk, an unrecorded area of user data is left by a write-once optical disk device different from the write-once optical disk device to be inspected,
Verification of whether or not the test zone can be recognized is performed based on whether or not the write-once optical disc apparatus can properly recognize the capacity of the unrecorded area.
A drive inspection method characterized by the above. In any one of Claims 5 thru | or 7,
In the recorded write-once test disc, a border area is set following the final user data recording position by a write-once optical disc apparatus different from the write-once optical disc apparatus to be inspected, and a further user is set in this border area. Information indicating that data can be appended is recorded,
By verifying whether the recordable optical disc apparatus to be inspected can recognize that the recorded recordable test disc is recordable based on the information recorded in the border area, the recordable optical disc Check the playback operation of the device,
A drive inspection method characterized by the above. In an inspection method for inspecting a write-once optical disc device,
Inspection using 3 discs,
One of the three discs is an unrecorded write-once optical disc,
A recording process for recording on the write-once optical disc with a target drive;
A first inspection step of inspecting a recording state of the write-once optical disc recorded in the recording step;
One of the three discs is a recorded write-once optical disc that is recorded by a drive different from the target drive and cannot be additionally written,
A second inspection step of reproducing the recordable optical disc that is not recordable by a target drive and inspecting the reproduction operation of the target drive based on the reproduced information;
One of the three discs is a recordable recordable optical disc recorded by a drive different from the target drive ,
A third inspection step of reproducing the recordable optical disc on the target drive and inspecting the reproduction operation of the target drive based on the reproduced information;
A drive inspection method comprising:

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