Source: http://www.google.com/patents/US7522501?dq=6373188
Timestamp: 2016-08-30 00:32:50
Document Index: 316662123

Matched Legal Cases: ['Application No. 60', 'Application No. 10', 'Application No. 2003', 'Application No. 2006104619', 'Application No. 2006111473', 'Application No. 09720450190', 'Application No. 07110035']

Patent US7522501 - Recording, reproducing and product for management of data having a temporary ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsThe data structure on the recording medium includes a temporary defect management area storing a data block. The data block includes sequential recording information and a temporary definition structure. The sequential recording information provides information on continuous recording areas in the data...http://www.google.com/patents/US7522501?utm_source=gb-gplus-sharePatent US7522501 - Recording, reproducing and product for management of data having a temporary defect management area containing at least one pointerAdvanced Patent SearchPublication numberUS7522501 B2Publication typeGrantApplication numberUS 10/840,264Publication dateApr 21, 2009Filing dateMay 7, 2004Priority dateMay 9, 2003Fee statusLapsedAlso published asCA2525119A1, EP1623422A1, US20040240341, US20080192596, US20080212434, WO2004100156A1Publication number10840264, 840264, US 7522501 B2, US 7522501B2, US-B2-7522501, US7522501 B2, US7522501B2InventorsYong Cheol ParkOriginal AssigneeLg Electronics Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (107), Non-Patent Citations (8), Classifications (12), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetRecording, reproducing and product for management of data having a temporary defect management area containing at least one pointer
US 7522501 B2Abstract
The data structure on the recording medium includes a temporary defect management area storing a data block. The data block includes sequential recording information and a temporary definition structure. The sequential recording information provides information on continuous recording areas in the data area of the recording medium. The temporary definition structure includes at least one pointer to information in the temporary defect management area.
1. A recording medium having a data structure for managing a data area of a recording medium, comprising:
a temporary defect management area storing a first data block, the first data block including sequential recording information and a temporary definition structure, the sequential recording information providing information on continuous recording areas in the data area of the recording medium, the temporary definition structure including at least one pointer to information in the temporary defect management area.
2. The recording medium of claim 1, wherein the first data block has a size of at least one cluster.
3. The recording medium of claim 2, wherein one sector of the first data block is devoted to the temporary definition structure and at most 31 sectors of the first data block are devoted to the sequential recording information.
4. The recording medium of claim 3, wherein a first sector of the sequential recording information is located adjacent to the temporary definition structure.
5. The recording medium of claim 1, wherein the sequential recording information includes a header, information entries for each continuous recording area and a terminator, the header identifying the sequential recording information as sequential recording information, each information entry providing information on an associated continuous recording area, and the terminator indicating an end of the sequential recording information.
6. The recording medium of claim 5, wherein the header information indicates a number of the continuous recording areas.
7. The recording medium of claim 6, wherein the header information indicates a number of the continuous recording areas open for recording.
8. The recording medium of claim 5, wherein the header information indicates a number of the continuous recording areas open for recording.
9. The recording medium of claim 5, wherein each information entry indicates whether the associated continuous recording area is a first continuous recording area in a group of continuous recording areas.
10. The recording medium of claim 5, wherein each information entry indicates whether the associated continuous recording area is open for recording.
11. The recording medium of claim 5, wherein each information entry indicates a starting physical sector number of the associated continuous recording area.
12. The recording medium of claim 5, wherein each information entry indicates a last recording address of the associated continuous recording area.
13. The recording medium of claim 5, wherein each information entry indicates a status of the associated continuous recording area, indicates a starting physical sector number of the associated continuous recording area, and indicates a last recording address of the associated continuous recording area.
14. The recording medium of claim 13, wherein the status indicates whether the associated continuous recording area is a start of a group of continuous recording areas.
15. The recording medium of claim 1, wherein the temporary definition structure includes a pointer to a temporary defect list in the temporary defect management area, the temporary defect list indicating defects in the data area.
16. The recording medium of claim 1, wherein the temporary defect management area comprises:
a second data block, the second data block including a later recorded sequential recording information as compared to the first data block, the later recorded sequential recording information including the sequential recording information of the first data block and new sequential recording information.
17. The recording medium of claim 16, wherein
the sequential recording information in the first and second data blocks each include a header, information entries for each continuous recording area and a terminator, the header identifying the sequential recording information as sequential recording information, each information entry providing information on an associated continuous recording area, and the terminator indicating an end of the sequential recording information; and
the information entries in the sequential recording information in the first and second data blocks are sorted by entry into the sequential recording information.
18. The recording medium of claim 16, wherein
each information entry in the sequential recording information in the first and second data blocks includes a status indicator indicating a status of the associated continuous recording area; and
the information entries in the sequential recording information in the first and second data blocks are sorted by status.
19. A method of recording management data on a recording medium, comprising:
recording a first data block in a temporary defect management area, the first data block including sequential recording information and a temporary definition structure, the sequential recording information providing information on continuous recording areas in the data area of the recording medium, the temporary definition structure including at least one pointer to information in the temporary defect management area.
20. A method of reproducing data from a recording medium, comprising:
reproducing at least a portion of data recorded on the recording medium based on a data block recorded in a temporary defect management area of the recording medium, the data block including sequential recording information and a temporary definition structure, the sequential recording information providing information on continuous recording areas in the data area of the recording medium, the temporary definition structure including at least one pointer to information in the temporary defect management area.
21. An apparatus for recording management data on a recording medium, comprising:
a controller, operatively coupled to the optical pickup, configured to control the optical pickup to record a first data block in a temporary defect management area, the first data block including sequential recording information and a temporary definition structure, the sequential recording information providing information on continuous recording areas in the data area of the recording medium, the temporary definition structure including at least one pointer to information in the temporary defect management area.
22. The method of claim 19, wherein the first data block has a plurality of sectors and one sector of the first data block is devoted to the temporary definition structure and remaining sectors of the first data block are devoted to the sequential recording information.
23. The method of cliam 22, wherein the temporary definition structure is recorded in a last sector of the first data block.
24. The method of claim 22, wherein the temporary definition structure is recorded in a first sector of the first data block.
25. The method of claim 19, the method further comprising:
recording a second data block, the second data block including a later recorded sequential recording information as compared to the first data block, the later recorded sequential recording information including the sequential recording information of the first data block and new sequential recording information.
26. The method of claim 20, wherein the data block has a plurality of sectors and one sector of the data block is devoted to the temporary definition structure and remaining sectors of the data block are devoted to the sequential recording information.
27. The method of claim 26, wherein the temporary definition structure is reproduced from a last sector of the data block.
28. The method of claim 26, wherein the temporary definition structure is reproduced from a first sector of the data block.
an encoder, operatively controlled by the controller, configured to receive and encode input data;
a multiplexer, operatively controlled by the controller, configured to multiplex the encoded data based on the coding information and stream attribute information to create a transport stream; and
a source packetizer, operatively controlled by the controller, configured to packetize the transport stream from the multiplexer into the source packets.
30. The apparatus of claim 21, wherein the first data block has a plurality of sectors and the controller configured to control the optical pickup to record the temporary definition structure in one sector of the first data block and the sequnetial recording information in remaining sectors of the first data block.
31. The apparatus of claim 30, the controller configured to control the optical pickup to record the temporary definition structure in a last sector of the first data block.
32. The apparatus of claim 30, the controller configured to control the optical pickup to record the temporary definition structure in a first sector of the first data block.
33. The apparatus of claim 21, the controller configured to further control the optical pickup to record a second data block, the second data block including a later recorded sequential recording information as compared to the first data block, the later recorded sequential recording information including the sequential recording information of the first data block and new sequential recording information.
34. An apparatus for reproducing data from a recording medium, comprising:
an optical pickup configured to reproduce data from the recording medium; and
a controller, operatively coupled to the optical pickup, configured to control the optical pickup to reproduce a data block in a temporary defect management area, the data block including sequential recording information and a temporary definition structure, the sequential recording information providing information on continuous recording areas in the data area of the recording medium, the temporary definition structure including at least one pointer to information in the temporary defect management area.
a source depacketizer, operatively controlled by the controller, configured to convert source packets received from the drive into a data stream;
a demultiplexer, operatively controlled by the controller, configured to demultiples the data stream into encoded data; and
a decoder, operatively controlled by the controller, configured to decode the encoded data to produce original data.
36. The apparatus of claim 34, wherein the data block has a plurality of sectors and the controller configured to control the optical pickup to reproduce the temporary definition structure from one sector of the data block and the sequential recording information from remaining sectors of the data block.
37. The apparatus of claim 36, the controller configured to control the optical pickup to reproduce the temporary definition structure from a last sector of the data block.
38. The apparatus of claim 36, the controller configured to control the optical pickup to reproduce the temporary definition structure from a first sector of the data block. Description
FOREIGN PRIORITY The present invention claims priority under 35 U.S.C. 119 on U.S. Provisional Application No. 60/469,006 filed on May 9, 2003 and Korean Application No. 10-2003-031958 filed on May 20, 2003; the contents of which are incorporated by reference in their entirety.
In one exemplary embodiment, a temporary defect management area of the recording medium stores a first data block that includes sequential recording information and a temporary definition structure. The sequential recording information provides information on continuous recording areas in the data area of the recording medium. The temporary definition structure includes at least one pointer to information in the temporary defect management area.
In one embodiment, the sequential recording information includes a header, information entries for each continuous recording area and a terminator. The header identifies the sequential recording information as sequential recording information. Each information entry provides information on an associated continuous recording area, and the terminator indicates an end of the sequential recording information.
In one embodiment, the header information indicates a number of the continuous recording areas and a number of the continuous recording areas open for recording.
In an example embodiment, each information entry indicates a status of the associated continuous recording area, indicates a starting physical sector number of the associated continuous recording area, and indicates a last recording address of the associated continuous recording area.
FIG. 1 illustrates the different kinds of basic tracks of a write-once optical disc according to an example embodiment of the present invention;
FIGS. 2A and 2B illustrate a data structure of the write-once optical disc, and more specifically, the temporary disc management information according to an embodiment of the present invention;
FIG. 3 illustrates a comparison of the disc management information of a conventional rewritable optical disc to the disc management information of the present invention;
FIGS. 4 and 5 illustrate two example embodiments of a method of updating the track information according to the present invention; and
Kinds of Tracks and Data Structure of the Recording Medium
Referring to FIGS. 1, 2A-2B and 3, the kinds of tracks and physical structure of the disc according to an example embodiment of the of the present invention will be described. A continuous recording area in which data is sequentially recorded will be referred to as a track in this disclosure. FIG. 1 illustrates the different kinds of basic tracks of a write-once optical disc according to an example embodiment of the present invention. More specifically, FIG. 1 illustrates a plurality of continuous recording areas or tracks having different status assuming use of the write-once disc over a period of time. As shown, tracks 1 and 2 correspond to open tracks that while storing data in a first area thereof, each have a later area on which additional recording is possible. The tracks 3 and 4 correspond to complete or closed tracks that are completely filled (track 4) or are closed for further recording (track 3). As shown by track 3, when a track having an unrecorded area is closed such that no further recording in the track is permitted, the unrecorded area is padded with zeros (shown as a hatched portion in FIG. 1) and changed to be a complete track. Track 3 is different from track 4 in that point.
Track 5 provides an example of the last track that includes area on which additional recording is possible. This track is called an intermediate track. Accordingly, there are three kinds of tracks—open, closed and intermediate.
FIGS. 2A and 2B illustrate a data structure of the write-once optical disc, and more specifically, temporary disc management information according to an embodiment of the present invention. The configuration of the write-once optical disc shown in FIG. 2A is described in detail in Korea Patent Application No. 2003-15634.
As shown, the write-once optical disc in this example is a single layer disc that has one recording layer. The disc includes spare areas (ISA0/ISA1) for recording data the could not be recorded in the main data area because of defects in the main data area (e.g., physical defects). Information for managing the replacement of defect portions of the data area with portions of the spare area is recorded in a temporary defect management area or areas (TDMA).
In general, a rewritable, as opposed to a write-once, optical disc has a limited defect management area (DMA) because data can be written and erased from the DMA repeatedly. A write-once optical disc needs a larger amount of to manage defects since data can be written only once and not erased. Accordingly, the TDMA is used for recording the defect management information as this information changes during use of the optical disc. Once the disc is complete, the last version of the defect management information is copied from the TDMA to a DMA on the write-once optical disc.
Referring to FIG. 2A, the TDMA includes TDMA1 allocated to a lead-in area having a fixed size and TDMA2 allocated to spare area OSA0. The TDMA2 has a size interworking with the size of the spare area. For example, the size of the spare area OSA0 is N*256 cluster, of which the TDMA2 forms P clusters. The number of clusters P may be determined according to the expression P=(N*256)/4). In each TDMA, temporary defect management information in the form of a temporary defect list (TDFL), a temporary disc definition structure (TDDS), and disc use status information may be recorded.
As discussed above, when a defect area exists in the data area, a spare area (ISA0/OSA0) is substituted for the defect area. The TDFL provides information to manage this process in the form of a list. For example, the list indicates the defect area and the spare area replacing the defect area. According to one embodiment of the present invention, the size of the TDFL, varies from 1 to 4 clusters depending on the amount of information in the TDFL. By contrast, according to one example embodiment of the present invention, the amount of space devoted to the TDDS remain fixed at one cluster. According to this embodiment, this data block includes the TDDS and disc usage status information as discussed in detail below with respect to FIGS. 3 and 2B.
Referring first to FIG. 3, the disc management information of the conventional rewritable optical disc will be compared with the contents included in the TDDS of the present invention.
In the case of a rewritable optical disk, the DDS consumes a very small portion of the disc—about 60 bytes of one cluster (one cluster having 32 sectors). The remaining area of the cluster is set by ‘zero padding’. However, according to this embodiment of the present invention, the remaining area as well as the area (60 bytes) used in the conventional rewritable optical disk is used as disc management information. Accordingly, in the TDDS of the present invention, information particular to a write-once optical disc as well as DDS as used in the conventional rewritable optical disc is recorded sequentially in one sector (2048 bytes). For example, the information particular to the write-once optical disc may be position information of the latest TDFL.
As shown in FIG. 2A and 3, the sequential recording or, more particularly, the track information according to an embodiment of the present invention is recorded on the remaining 31 sectors of one cluster that includes the TDDS. Alternatively, the track information may be configured in 31 sectors in the front of TDDS and the TDDS may be configured on the last, 32nd sector.
First, the present invention does not limit the number of the open tracks. Accordingly, there may exist a plurality of open tracks and complete tracks. The present invention provides a data structure on the recording medium for managing this potential in an efficient manner. An embodiment of this track information data structure will now be described in detail with respect to FIG. 2B.
In the example of FIG. 2B, the first address information of an entry is a ‘start physical sector number (PSN) of track’ field. This field provides the sector address of the first sector forming the track. The last recorded address information in the example of FIG. 3B is the LRA of the track. Accordingly, if one entry is read, the kind of track, the start position and LRA of the track may be determined.
The track status information in each entry may also include a session start status (e.g., one of the bits in the track status information in each entry may be used as the session start bit). The session status indicates if the track is the first track or not the first track in a session. Here, the clustering of tracks into a group is called a session.
When to update the track information may be a design parameter established according to the system or system designer. However, examples of events triggering update will be described in detail below.
When a new track is generated or a track is closed, since the track information is newly generated, the track information may be updated. When a disc is ejected from a driver or the power to the driver is turned off, use of the disc is stopped at least temporarily. At these times, the track information is updated.
FIGS. 4 and 5 illustrate two example embodiments of a method of updating the track information according to the present invention. As shown in FIG. 4, the track information in a preceding step and the track information to be updated now are separate and recorded separately. In this method, the track information previously recorded is included in the current recording such that the track information is recorded cumulatively.
More specifically, to record the track information updated at time n+1, the track information recorded at time n and the track information at time n+1 are recorded sequentially. In other words, the track information in the preceding track recording step is included, but recorded separately from current track information. Similarly when updating the track information at time n+2, the track information recorded at time n and n+1 is included, but recorded separately.
The advantage of this embodiment is that the contents of the track information at each stage of disc usage is recorded in sequential order. It is easy to confirm the usage status of the disc. If only the latest track information is recorded, it would be more difficult to access the previous track information and require a longer time to access this information.
FIG. 5 illustrates another embodiment of a method of updating the track information according to the present invention. The track information previously recorded and the track information to be updated now are included and recorded cumulatively. However, prior to recording, the track information list is sorted and recorded in a specific order.
More specifically, to record the track information updated at time n+1, the track information recorded at time n and the track information to be updated now at time n+1 are considered as one track information list and sorted. The sorted version of the track information is then recorded in a specific order.
For example, the track information list entries may be sorted by track status (i.e., the kind of track). Using the format of the track status information described above with respect to FIG. 2B as an example, the entries of the open tracks that have ‘0000b’ as track status information come first. Next, entries of the complete tracks that have ‘1000b’ as the track status information are recorded, and last, the entries of the intermediate track that have ‘0001b’ as track status information are recorded. For entries having the same track status information, the entries are sorted by the first address information such that the entries having smaller addresses are recorded first.
Another method is also possible. For example at first the track information list entries may be sorted by the first address information such that the entries having smaller addresses are recorded first. It should be understood that these are merely examples of the sorting that may take place, and that a system designer may adopt other basis for sorting that fall within the spirit and scope of the present invention.
The advantage of this embodiment of the present invention is that information on the tracks in a disc are sorted according to their kind so that the information related to a kind of track (e.g., open track) may be easily obtained. Also, because the track information for each track is recorded in the updating, the track information for the data area is easily and quickly accessible.
The two embodiments described above are complementary to each other. The system or user may select and use the method suitable to their environment.
The controller 10 also creates the navigation and management information for managing reproduction of the data being recorded on the optical disk. For example, the controller 10 controls the drive 3 to record one or more of the data structures of FIGS. 1-3 on the optical disk.
The write-once optical disc management data structure and method of recording and reproducing this data structure as well as updating the management data provide information regarding the use of the recording medium to sequentially store data in continuous recording areas (e.g., tracks). This data structure and these methods remain applicable for the case where the number of the open tracks, in which additional recording is possible, is not limited.
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areas* Cited by examinerNon-Patent CitationsReference1"JIS Handbook Data Processing for Hardware," Japanese Standards Association Inc., Japan, Apr. 21, 1999, pp. 1064-1070.2International Search Report and Written Opinion dated Aug. 31, 2004.3International Search Report and Written Opinion dated Jan. 13, 2006.4International Search Report and Written Opinion dated Mar. 8, 2007.5Office Action for corresponding Russian Application No. 2006104619/28 dated Jun. 26, 2008.6Office Action for corresponding Russian Application No. 2006111473/28(012477) dated Dec. 26, 2008.7Office Action for corresponding Taiwanese Application No. 09720450190 dated Aug. 25, 2008.8Search Report for corresponding European Application No. 07110035.8 dated Jun. 5, 2008.Classifications U.S. Classification369/53.15, 369/275.3, 369/53.17, 714/6.32International ClassificationG11B20/18, G11B5/09, G06F11/10, G11B7/00, G11B7/007, G11B20/10Cooperative ClassificationG11B20/1883European ClassificationG11B20/18SLegal EventsDateCodeEventDescriptionJul 30, 2004ASAssignmentOwner name: LG ELECTRONICS INC., KOREA, REPUBLIC OFFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PARK, YONG-CHEOL;REEL/FRAME:015625/0540Effective date: 20040406Dec 3, 2012REMIMaintenance fee reminder mailedApr 21, 2013LAPSLapse for failure to pay maintenance feesJun 11, 2013FPExpired due to failure to pay maintenance feeEffective date: 20130421RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services