Source: http://www.google.com/patents/US7970988?ie=ISO-8859-1&dq=5251294
Timestamp: 2015-01-27 09:35:52
Document Index: 775816118

Matched Legal Cases: ['Application No. 200710138431', 'Application No. 2006136920', 'Application No. 2007', 'Application No. 2007', 'Application No. 2007', 'application No. 2006136909', 'Application No. 2', 'Application No. 2', 'Application No. 2007', 'Application No. 2007', 'Application No. 04808643', 'Application No. 2004317315', 'Application No. 2006136920', 'Application No. 2006136914', 'Application No. 2006136909', 'Application No. 07111355', 'Application No. 07110264', 'Application No. 07150328']

Patent US7970988 - Recording medium with status information thereon which changes upon ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA recording medium, such as a high-density and/or optical recording medium and apparatus and methods for recording to and reproducing from the recording medium, in order to initialize, reinitialize, format, and/or re-format the high-density and/or optical recording medium....http://www.google.com/patents/US7970988?utm_source=gb-gplus-sharePatent US7970988 - Recording medium with status information thereon which changes upon reformatting and apparatus and methods for forming, recording, and reproducing the recording mediumAdvanced Patent SearchPublication numberUS7970988 B2Publication typeGrantApplication numberUS 11/061,891Publication dateJun 28, 2011Filing dateFeb 22, 2005Priority dateMar 19, 2004Also published asUS7975098, US20050210362, US20070226234Publication number061891, 11061891, US 7970988 B2, US 7970988B2, US-B2-7970988, US7970988 B2, US7970988B2InventorsYong Cheol ParkOriginal AssigneeLg Electronics Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (103), Non-Patent Citations (30), Classifications (26), Legal Events (1) External Links: USPTO, USPTO Assignment, EspacenetRecording medium with status information thereon which changes upon reformatting and apparatus and methods for forming, recording, and reproducing the recording mediumUS 7970988 B2Abstract A recording medium, such as a high-density and/or optical recording medium and apparatus and methods for recording to and reproducing from the recording medium, in order to initialize, reinitialize, format, and/or re-format the high-density and/or optical recording medium.
CROSS-REFERENCE TO RELATED APPLICATIONS This U.S. non-provisional application claims priority of U.S. provisional application Ser. No. 60/554,356 filed on Mar. 19, 2004 and U.S. provisional application Ser. No. 60/577,181 filed on Jun. 7, 2004 and Korean Application Nos. 10-2004-0051610, filed on Jul. 2, 2004 and 10-2004-0053617, filed on Jul. 9, 2004, in the Korean Intellectual Property Office, the entire contents of each of which are hereby incorporated by reference.
SUMMARY OF THE INVENTION Example embodiments of the present invention provide a PAC on a medium, such as a high density optical disc, and apparatus and methods for recording data to and reproducing data from the medium using the PAC, where the PAC may be initialized, re-initialized, formatted, and/or reformatted.
Furthermore, a PAC according to example embodiments of the present invention may include an �unknown rule�, which may restrict read/write of data for the entire disc or a specific segment, for a drive having a specifically unknown PAC_ID and including a drive of a previous version (for example, a �legacy version�). A PAC having an �unknown rule� applied thereto may be referred to as an �Unknown PAC�. Similarly, a known specific PAC_ID recorded on the PAC may be referred to as a �known rule� and �PAC specific information� that is applied to the PAC may be referred to as a �Known PAC�.
In an example embodiment, a �Known PAC� may be a PAC having information related to a date of disc initialization and information (for example, Recorder ID, if one disc is recorded with many recorders, this may be useful information) on a recorder (which may be an optical disc drive) of each cluster on the disc and may be referred to as a �Primary PAC�.
In areas of the disc managed by the �unknown rule�, there are a DMA (Disc Management Area), a Spare Area, a User Data Area, and the like, and particularly, with regard to the User Data Area, segment areas which are predetermined areas on the disc the �unknown rule� is applicable thereto can be designated thereto. (The segment will be described in more detail, later.)
That is, by using the �unknown rule�, rules and/or other operations for controlling predictable operations of the above areas, such as, starting from basic operations of recording and reproducing, linear replacement of a defective area, logical overwrite of the BD-WO, and/or other similar operations may be defined.
An example header portion may include 4 bytes of �PAC_ID�, 4 bytes of �Unknown PAC Rules�, 1 byte of �Entire Disc Flag�, 1 byte of �Number of Segments�, and/or 32 �segments Segment_0�Segment_31 each with 8 bytes.
Referring to FIG. 5, a degree of controllability of various areas on the disc may be enabled by the �Unknown PAC Rules�. In this example, the �Area� column in FIG. 5 represents the controllable areas on the disc, the �Control Type� column represents control types, such as read/write etc., and �Bits� column represents a number of bits required for control. The additional bits in the �Bits� column may represent cases of dual layer disc with two recording/reproduction sides.
�Unknown PAC Rules� may be used to control a number of areas on a disc. For example, �Unknown PAC Rules� can indicate recording controllability on Disc Management Area (DMA) zones (which may or may not include a Disc Definition Structure (DDS) in the INFO 1, 2, 3 and/or 4 zones, can indicate recording controllability on the Spare Areas in the Data Zone, can indicate recording and/or reproducing controllability on the Control Data (CD) Zone in the INFO1, 2, 3, and/or 4 zones, can indicate recording and/or reproducing controllability on the User Data Area in the Data Zone, and/or can indicate recording and/or reproducing controllability on the �PAC cluster� in the INFO1 and/or 2 zone.
The following example rule may be applicable to areas (except the �PAC cluster� area. In the case where the control type is write, for example, for Bits=b3, b5, b6, b7, etc., if an allocated bit is set to �0�, this may be used to indicate an area relevant thereto is writable and if an allocated bit is set to �1�, this may be used to indicate an area relevant thereto is not writable.
In the case where the control type is read, for example, for Bits=b2, b4, etc., if an allocated bit is set to �0�, this may be used to indicate an area relevant thereto is readable, and if an allocated bit is set to �1�, this may be used to indicate an area relevant thereto is not readable.
With regard to the �PAC cluster� zone, in a case where the control type is write (Bits=b1), and if an allocated bit is �0�, this may be used to indicate that overwrite on the present PAC is possible or status bits of a Disc Definition Structure (DDS) is changeable. If an allocated bit is �1�, this may be used to indicate overwrite on the present PAC is not possible or status bits of the DDS are not changeable. The DDS will be described in more detail below.
Also, with regard to the �PAC cluster� zone, in a case where the control type is read (Bits=b0), and if an allocated bit is �0�, this may be used to indicate that the �PAC cluster� zone is readable and contents of the present cluster are transferable externally (for example, to a host or other similar device) of a drive. If the allocated bit is �1�, this may be used to indicate that contents (so called known rule) of the present PAC cluster are not transferable except the first 384 bytes (a header) of a first data frame, which is settable only when it is intended to control the disc by an unknown rule.
In an example, even in the case of b0=0 when re-initialization is allowed, if writing is not allowed by another write inhibition mechanism (for an example, a write protect (WP) flag of DDS), the initialization is inhibited. That is, the �Entire Disc Flag� may be operative in an OR-function with other write inhibition mechanisms.
The �Entire Disc Flag� field can be used as a field applicable, not only to a case of an unknown PAC, but also to a case of a known PAC. That is, allowability of re-initialization of even a known PAC which understands the PAC_ID enabling to apply the known rule may be controlled through the �Entire Disc Flag� field.
In another example, without providing the �Entire Disc Flag� field as described above, it may also be possible that the allowability of re-initialization may be indicated with one extra bit (for example, of the 32 bits of the �Unknown PAC Rule� field) as a �re-initialization flag� for indicating the allowability of re-initialization.
Moreover, it should be apparent that functions of the �Entire Disc Flag� field are not limited to flag named as such. As is clear, the function of the �Entire Disc Flag� field is applicable to the re-initialization of a PAC, and the field may be identified as a �Initialization bit of PAC� field.
Further, in FIG. 4, the �Number of Segments� field is a field that may represent a number of segment areas to which the PAC is applicable.
Referring to FIG. 7, a �Primary PAC� may include 4 bytes of �PAC_ID�, 4 bytes of �PAC Update Count�, 4 bytes of �Unknown PAC Rules�, 1 byte of �Entire_Disc_Flag�, 1 byte of �number of Segments�, a total of 32 �Segment_0 Segment_31 each with 8 bytes, 2 bytes of �number of Recorder ID entries�, 4 bytes of �Year/Month/Date of initial recording�, 2 bytes of �Re-initialization Count�, and/or a plurality of �Recorder ID for RID_Tag xxxh� fields each with 128 bytes.
The �number of Recorder ID entries�, the �Year/Month/Date of initial recording�, the �Re-initialization Count�, and the �Recorder ID for RID_Tag xxh� fields of the �Primary PAC� may be referred to as a �known rule�, which is PAC specific Info characterizing A �Primary PAC�. A �Primary PAC� having such a structure is discussed below.
As described above, the �PAC_ID� field may be used as a field for providing a status and identification code of the present PAC and be recorded in �50 52 4D 00h� for indicating the Primary PAC, specifically. �50 52 4D 00h� represents characters �PRM�, and the last 00h bit indicates that a version of the Primary PAC is �0�.
The �PAC Update Count� field may be used to indicate a number of updates of the Primary PAC, may be written as, 00h at the time of initialization, and may be incremented by one every time the Primary PAC is re-written.
The �Unknown PAC Rules� field is a field that may be used for designating an operation range of a drive that does not understand the Primary PAC identified by �PAC_ID� having a structure as shown in FIG. 5, and may be set to control the DMA area, the spare area, the control data area, the user data area, the PAC cluster area, and/or other similar data.
The �Entire_Disc_Flag� field of the Primary PAC may be set to 00h for allowing initialization, and, if no segment area is allocated, the �Number of Segments� field, and the �Segment_i� fields may be set to 00h.
The �number of Recorder ID entries� field is a field that may be used to indicate a number of recorder IDs of 128 byte size and/or a maximum allowable number in the Primary PAC of 252.
The �Year/Month/Date of initial recording� field is a field that may be used for recording a Year, a Month, and a date of initial recording of the disc thereon and the �Re-initialization Count� field is a field that may be used for indicating a number of re-initialization of the disc.
The �Recorder ID for RID_Tag xxh� field is a field having 128 bytes allocated thereto that may be used for recorder ID information for recording drive signatures of all recorders thereon. The 128 bytes of drive signature may include 48 bytes of a manufacturer's name, 48 bytes of additional identification information, and/or 32 bytes of serial number.
Referring to FIG. 9, the DDS may include a �DDS identifier� field, a �DDS format� field, a �First PSN of Drive Area (P_DA)� field representing the first physical sector number of a drive area, a �First PSN of Defect List (P_DFL)� field representing the first PSN of the defect list, a �Location of LSN 0 of User Data Area� field representing a position of an LSN (logical sector number) of the user data area, an �Inner Spare Area 0 size (ISA0_size)� field representing a size of an inner spare area 0, an �Outer Spare Area size (OSA_size)� field representing a size of an outer spare area 0, an �Inner Spare Area 1_size (ISA1_size)� field representing a size of an inner spare area 1, a �Status bits of INFO1/PAC1 location on L0� field having status information on the PAC1 in the INFO1 zone of the first recording layer L0 recorded thereon, a �Status bits of INFO2/PAC2 location on L0� field having status information on the PAC2 in the INFO2 zone of the first recording layer L0 recorded thereon, a �Status bits of INFO1/PAC1 location on L1� field having status information on the PAC1 in the INFO1 zone of the second recording layer L1 recorded thereon, and/or a �Status bits of INFO2/PAC2 location on L1� field having status information on the PAC2 in the INFO2 zone of the second recording layer L1 recorded thereon.
A defect is not the only reason a PAC cluster may be identified as invalid. For example, when the PAC cluster is not readable due to �Unknown PAC Rules� too, the PAC cluster may also be identified as an invalid PAC, with 10. That is, as described above, the bit b0 of �Unknown PAC Rule� may be used as a bit for indicating if the PAC cluster is readable, wherein even if the PAC cluster is re-writable in a case where the bit is set to 1, the PAC cluster is indicated as an invalid PAC.
FIG. 1A illustrates a structure of �Status bits of INFO1/PAC1 location on L0� field for indicating status information of the PAC1 zone designated to the INFO1 zone of the first recording layer L0.
Referring to FIG. 11A, the �Status bits of INFO1/PAC1 location on L0� field may have a total 8 bytes (64 bits) allocated thereto starting from a byte position of 64 (for example) to a byte position of 71 (for example), wherein by indicating status information with two bits for each of PAC clusters, information on a total number (for example, 32) of PAC clusters may be indicated.
Also, the �Status bits of INFO2/PAC2 location on L0� field may be recorded by the same method for the PAC2 zone on the INFO2 zone on the first recording layer, which is shown in FIG. 11B.
FIG. 11C illustrates an example structure of a �Status bits of INFO1/PAC1 location on L1� field having status information on a PAC1 in the INFO1 zone of the second recording layer L1, and FIG. 11D an example structure of a �Status bits of INFO2/PAC2 location on L1� field having status information on a PAC2 in the INFO2 zone of the second recording layer L1, wherein information on the PAC cluster is indicated as described above.
In valid PACs, there may be �Unknown PAC� and �Known PAC� depending on whether the valid PAC understands a PAC_ID, or not, wherein the �Unknown PAC� has recording and/or reproducing control information on certain areas on the disc (for example, the DMA area, the spare area, the user data area, the PAC cluster, and/or other similar areas). The recording and/or reproducing control information on the user data area may be used as recording and/or reproducing control information on the segment area, if the segments are allocated to the user data area.
The �Known PAC� may include specific information, specific to the PAC, and a �Primary PAC� may be defined as a type of �Known PAC�, having disc initialization date information, recorder ID information, and/or other similar information.
(For the initialization of a re-writable high density optical disc (for example, BD-RE), it may be necessary to first verify if an inserted disc can be initialized. Verification of whether the disc can be initialized can be made using the �Entire disc Flag� field (which may also be termed an �initialization bit of PAC�) and/or a disc recording inhibition mechanism (for an example, a write protect (WP_flag) of a DDS). In an example, if a bit, b0 of the �Entire disc Flag� field is set (for example, to �1�) or if the recording inhibition mechanism inhibits the recording on the disc, initialization is not permitted.
In a case where the �Entire disc Flag� field that indicates if the initialization is allowed or not is applicable to a �Known PAC�, the �Known PAC� can be initialized if the �Entire disc Flag� field allows initialization.
In a case where the disc is controlled by an unknown PAC, initialization may not be possible if the �Unknown PAC Rule� inhibits recording on a data zone.
Referring to FIGS. 13A-13B, the �Known PAC� including the �Primary PAC� is initialized and the �unknown PAC� is left as is. As described, initialization of a �Primary PAC� which may be considered a type of �Known PAC� may be possible because the �Entire disc flag� may be set to �0� (discussed below).
When there is no �Primary PAC� on the disc, the disc may be initialized by setting the �PAC Update Count� field and the �Re-initialization Count� field to �0� at the �Primary PAC�, to produce a new �Primary PAC�. In this case, a Year/Month/Day of recording initialization may be recorded on the �Year/Month/Day of initial recording� field, and the recorder ID at the time of initialization may be recorded on the �Recorder ID for RID_Tag01� field.
If there is a �Primary PAC� on the disc, the new �Primary PAC� increments a �PAC Update Count� field value by one and sets the Year/Month/Day of recording initialization on the �Year/Month/Day of initial recording� field. Moreover, all the recorder ID lists recorded already are erased, and a recorder ID of initial recording may be recorded on the �Recorder ID for RID_Tag01� field, and the �Re-initialization Count� field may be incremented by one.
If the �Primary PAC� is initialized by an above method, while the �Unknown PAC� is left as is, all information on a valid PAC in the DDS remains intact, as shown in FIG. 13B.
An �Unknown PAC� may be left as is at the time of disc initialization because the PAC has information not only on the user area, but also other areas (for example, the DMA area, the spare area, the control data area, and/or other similar areas) on the disc. As a result, initialization leaving the �Unknown PAC� as is, regardless of user data, is possible.
Referring to FIGS. 14A-14B, both the �Known PAC� and the �Unknown PAC� may be initialized, including the �Primary PAC�.
Accordingly, referring to FIG. 14A, both an �Unknown PAC� with a PAC_ID=A (where �A� is an arbitrary designator), and an �Unknown PAC� with a PAC_ID=B (also an arbitrary designator) are initialized into next writable areas PAC_ID=00 00 00 00h or PAC_ID=FF FF FF FFh. The �Primary PAC� may be initialized, for example, using the technique shown in FIGS. 13A-13B.
Referring to FIG. 14B, bits 11 may be used to indicate a valid PAC of the �Unknown PAC� and PAC related information of the DDS may be changed to 01.
Referring to FIGS. 15A-15B, similar to FIGS. 14A-14B, both the �Known PAC� and the �Unknown PAC� may be initialized, including the �Primary PAC�, while accounting for bit b1 of the �Unknown PAC Rule� into account.
That is, as described above, if bit b1 of the �Unknown PAC Rule�, a recording control bit for the PAC cluster area, is set to 1 (for example), to inhibit rewriting on the PAC cluster, initialization of the �Unknown PAC� is inhibited, and if bit b1 of the �Unknown PAC Rule� is set to 0 (for example), to allow rewriting on the PAC cluster, initialization of the �Unknown PAC� is made possible.
Therefore, if it is desired to leave an �Unknown PAC� as is, regardless of the User data, it is possible to leave the �Unknown PAC� as is by using bits b1, and, for the �Unknown PAC� to be left as is, DDS information is left as 11 as a valid PAC.
Referring to FIG. 16, the optical recording/reproducing apparatus may include a recording/reproducing device 10 for performing recording/reproduction on the optical disc and a host, or controller 20 for controlling the recording/reproducing device 10. In an example embodiment, the recording/reproducing device 10 may act as the �optical disc drive� discussed above in conjunction with many example embodiments of the present invention.
Moreover, the microcomputer 16 of the recording/reproducing device 10 may also write a PAC_ID and segment information on a particular area of the disc as PAC information. The recorder ID information may be recorded on the �Recorder ID for RID_Tag of the �Primary PAC�.
Initialization of a high density optical disc having a PAC recorded thereon by the above-described method may be performed as described above under the control of the microcomputer 16 of the recording and reproducing device 10. In a example embodiment, an �Unknown PAC� may be initialized when a cluster having the PAC recorded thereon is writable and initialization of the �Primary PAC� of the �Known PAC� may be made by recording information on a recorder ID and date of the initialization, and updating related count information.
If the PAC_ID is not identifiable, determining that it is a case when there are recording and reproducing restrictions for entire disc or a segment area, the recording/reproduction may be performed according to an instruction from the host 20 from with reference to recording/reproduction restriction areas on the disc written as the �Unknown PAC rule� and/or the �Segment�.
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No. 11/802,477.Classifications U.S. Classification711/112, 711/115International ClassificationG11B20/12, G11B7/24, G11B7/00, G11B7/007, G11C29/00, H03M13/00, G11B27/30, G06F12/00, G11B20/10Cooperative ClassificationG11B2020/1221, G11B7/00736, G11B20/10, G11B2020/1285, G11B2007/0013, G11B20/1217, G11B2220/2541, G11B2020/1288, G11B7/24038, G11B2220/2537, G11B27/3027European ClassificationG11B20/10, G11B20/12D, G11B27/30C, G11B7/007RLegal EventsDateCodeEventDescriptionFeb 22, 2005ASAssignmentOwner name: LG ELECTRONICS, INC., KOREA, REPUBLIC OFFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PARK, YONG CHEOL;REEL/FRAME:016311/0410Effective date: 20050214RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services