Source: http://www.google.com/patents/US7525889?dq=6246862
Timestamp: 2014-04-18 08:41:21
Document Index: 450950994

Matched Legal Cases: ['Application No. 2002', 'Application No. 2002', 'Application No. 2002', 'Application No. 2002', 'Application No. 2002', 'Application No. 2002', 'Application No. 2002', 'Application No. 2003', 'Application No. 2004124954', 'Application No. 10', 'Application No. 10', 'Application No. 03800943', 'Application No. 10', 'Application No. 2004', 'Application No. 2004', 'Application No. 2005', 'Application No. 03757210', 'Application No. 94125650', 'Application No. 72907']

Patent US7525889 - Recording medium with a linking area including dummy data thereon and ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA recording medium, such as a high-density and/or read-only recording medium including a data area including at least two data sections and a linking area to link neighboring data sections, the linking area including dummy data, and to methods and apparatuses for forming, recording, and reproducing the...http://www.google.com/patents/US7525889?utm_source=gb-gplus-sharePatent US7525889 - Recording medium with a linking area including dummy data thereon and apparatus and methods for forming, recording, and reproducing the recording mediumAdvanced Patent SearchPublication numberUS7525889 B2Publication typeGrantApplication numberUS 10/753,401Publication dateApr 28, 2009Filing dateJan 9, 2004Priority dateJun 5, 2002Fee statusPaidAlso published asCA2458609A1, CA2458609C, CN1554091A, CN100514482C, EP1509917A1, EP1509917A4, EP1571664A2, EP1571664A3, EP1571665A2, EP1571665A3, EP1571666A2, EP1571666A3, EP1571667A2, EP1571667A3, EP1571668A2, EP1571668A3, US7257075, US7266075, US7542393, US7558175, US7577080, US7872960, US8014248, US8351315, US20040165512, US20040165515, US20040165516, US20040165517, US20040168010, US20040184393, US20090207706, US20090303862, US20090303863, US20100008210, WO2003105152A1Publication number10753401, 753401, US 7525889 B2, US 7525889B2, US-B2-7525889, US7525889 B2, US7525889B2InventorsJin Yong Kim, Sang Woon SuhOriginal AssigneeLg Electronics Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (100), Non-Patent Citations (37), Referenced by (3), Classifications (31), Legal Events (2) External Links: USPTO, USPTO Assignment, EspacenetRecording medium with a linking area including dummy data thereon and apparatus and methods for forming, recording, and reproducing the recording mediumUS 7525889 B2Abstract A recording medium, such as a high-density and/or read-only recording medium including a data area including at least two data sections and a linking area to link neighboring data sections, the linking area including dummy data, and to methods and apparatuses for forming, recording, and reproducing the recording medium.
a linking area to link neighboring data sections, the linking area including at least two linking frames, each linking frame including both at least one sync signal and dummy data,
wherein the dummy data is located behind the at least one sync signal in each linking frame.
2. The recording medium of claim 1, wherein the dummy data improves reproduction compatibility between the recording medium and at least one other recording media type.
3. The recording medium of claim 2, wherein the at least one other recording media type is a write-once or rewritable type.
4. The recording medium of claim 1, wherein the dummy data is located in an area of the linking area reserved for user data.
5. The recording medium of claim 1, wherein the at least two linking frames having a same size.
6. The recording medium of claim 5, wherein the at least two linking frames include a same frame pattern of dummy data.
7. The recording medium of claim 6, wherein the same frame pattern of dummy data is at least one of �00h�, �01h�, �10h�, �08h�, �AAh�, and �FFh�.
8. The recording medium of claim 6, further comprising at least one other linking area including a same area pattern of dummy data as the linking area.
9. The recording medium of claim 6, further comprising at least one other linking area including an area pattern of dummy data different from the linking area.
10. The recording medium of claim 5, wherein the at least two linking frames include different frame patterns of dummy data.
11. The recording medium of claim 10, further comprising at least one other linking area including a same area pattern of dummy data as the linking area.
12. The recording medium of claim 10, further comprising at least on other linking area including an area pattern of dummy data different from the linking area.
13. The recording medium of claim 10, wherein each of the different frame patterns of dummy data is at least one of �00h�, �01h�, �10h�, �08h�, �AAh�, and �FFh�.
14. The recording medium of claim 10, wherein one of the different frame patterns is �08h� and another of the different frame patterns is �00h�.
forming a linking area to link neighboring data sections of a data area while recording data onto the recording medium, the linking area including at least two linking frames; and
writing at least one frame sync signal and dummy data in each linking frame of the linking area, the dummy data being located behind the at least one sync signal in each linking frame.
16. The method of claim 15, wherein the writing step writes the dummy data with a same size between the recording medium and at least one other recording media type.
17. The method of claim 15, wherein the at least two linking frames include a same frame pattern of dummy data.
18. The method of claim 17, wherein the same frame pattern of dummy data is at least one of �00h�, �01h�, �10h�, �08h��AAh�, and �FFh�.
19. The method of claim 15, wherein the at least two linking frames include different frame patterns of dummy data.
20. The method of claim 19, wherein forming step forms at least one other linking area including a same area pattern of dummy data as the linking area.
21. The method of claim 19, wherein each of the different frame patterns is at least one of �00h�, �01h�, �10h�, �08h�, �AAh�, and �FFh�.
22. The method of claim 19, wherein one of the different frame patterns is �08h� and another of the different frame patterns is �00h�.
utilizing a linking area, which links neighboring data sections of a data area, to reproduce the data, the linking area including at least two linking frames, each linking frame including at least one frame sync signal and dummy data, the dummy data being located behind the at least one sync signal in each linking frame.
24. A method of recording data on a recording medium, comprising:
utilizing a linking area, which links neighboring data sections of a data area, to record the data, the linking area including at least two linking frames, each linking frame including at least one frame sync signal and dummy data, the dummy data being located behind the at least one sync signal in each linking frame.
25. The method of claim 24, wherein the utilizing step includes writing the dummy data with a same size between the recording medium and at least one other recording media type.
26. The method of claim 24, wherein the at least two linking frames include a same frame pattern of dummy data.
27. The method of claim 26, wherein the same frame pattern of dummy data is at least one �00h�, �01h�, �10h�, �08h�, �AAh�, and �FFh�.
28. The method of claim 24, wherein the at least two linking frames include different frame patterns of dummy data.
29. The method of claim 28, wherein at least one other linking area on the recording medium includes a same area pattern of dummy data as the linking area.
30. The method of claim 28, wherein each of the different frame patterns of dummy data is at least one of �00h�, �01h�, �10h�, �08h�, �AAh�, and �FFh�.
31. The method of claim 28, wherein one of the different patterns of dummy data is �08h� and another of the different patterns of data is �00h�.
32. An apparatus for reproducing data from a recording medium comprising:
an optical pickup configured to read a linking area, which links neighboring data sections of a data area, to reproduce data, the linking area including at least two linking frames, each linking frame including at least one frame sync signal and dummy data, the dummy data being located behind the at least one frame sync signal; and
a controlling unit configured to determine whether a currently read area is the linking area based on the frame sync signal read by the optical pickup, and to control a reproduction according to a result of the determination.
33. The apparatus of claim 32, wherein the controlling unit is configured to control the reproduction such that data within the neighboring data sections of the data area is reproduced continuously if the controlling unit determines the currently the currently read area is not the linking area, and the data within the neighboring data sections of the data area is reproduced excluding the dummy data if the controlling unit determines the currently read area is the linking area.
34. A recording medium, comprising:
a data area including at least two data sections, each data section including at least one sync signal; and
a linking area which links neighboring data sections of the data area and includes at least two linking frames, each linking frame including at least one frame sync signal and dummy data, wherein the sync signal precedes the dummy data in each linking frame of the linking area, and a size of the at least two linking frames is the same as that included in a write-once or rewritable medium.
35. The method of claim 23, wherein the utilizing step comprises:
detecting the at least one frame sync signal included in the linking frame of the linking area; and
determining whether a currently read area is the linking area based on the detected frame sync signal.
reproducing data within the neighboring data sections of the data area excluding the dummy data of a currently read area if the determining step determines the currently read area is the linking area.
reproducing data within the neighboring data sections of the data area continuously if the determining step determines a currently read area is not the linking area. Description
CROSS-REFERENCE TO RELATED APPLICATIONS This U.S. non-provisional application is a continuation-in-part of PCT International Application No. PCT/KR03/01096, filed on Jun. 4, 2003, the entire contents of which are incorporated by reference, which further claims priority of Korean Patent Application No. 2002-037146, filed on Jun. 5, 2002; Korean Patent Application No. 2002-067955, filed on Nov. 4, 2002; Korean Patent Application No. 2002-067956, filed on Nov. 4, 2002; Korean Patent Application No. 2002-077093, filed on Dec. 5, 2002; Korean Patent Application No. 2002-077094, filed on Dec. 5, 2002; Korean Patent Application No. 2002-079818, filed on Dec. 13, 2002; Korean Patent Application No. 2002-079819, filed on Dec. 13, 2002; and Korean Patent Application No. 2003-001858, filed on Jan. 11, 2003; all in the Korean Intellectual Property Office, the entire contents of which are hereby incorporated by reference.
TECHNICAL FIELD The present invention relates to dummy data of a linking area of a recording medium.
BACKGROUND ART A disc-type recording medium such as a compact disc (CD) can permanently store high-quality digital audio data, which makes such a medium popular. The �digital versatile disc� (referred as �DVD� hereinafter) has been developed as a new disc-type recording medium. A DVD can store much more data than a CD, thus, more high-quality moving picture and/or audio data may be recorded on a DVD, which has enabled widespread use of the DVD. There are at least three types of DVD, DVD-ROM for read-only, DVD-R for write-once, and rewritable DVD-RAM or DVD-R/W.
FIGS. 1 b and 1 c show an exemplary RUB (Recording Unit Block). A single RUB, which corresponds to a single ECC (Error Correction Code) block, is composed of Run-in, physical cluster, Run-out, and guard areas, as shown in FIG. 1 b. If more than one RUB, for example, successive RUBs, are created at one time to store real-time input data, e.g., A/V data, the set of Run-in, physical and Run-out is repeated as many times as necessary and a guard area �Guard�3� is formed at the end, as shown in FIG. 1 c. The Run-in area, as shown in FIG. 2 a, may include a 1100-channel-bit guard �Guard�1� and a 1660-channel-bit preamble �PrA�. 55 repetitions of a 20-channel-bit pattern are written in the guard �Guard�1� to indicate the head of an RUB while the first sync data �Sync�1�and the second sync data �Sync�2�, which are 30 channel bits in length, are written in the preamble �PrA�. Each sync data is composed of 24-bit sync body and 6-bit sync ID. The sync IDs of the first and the second sync data are �000 100� (FS4) and �010 000�(FS6), respectively.
The Run-out, as shown in FIG. 2 b, is composed of a 540-channel-bit guard �Guard�2� and a 564-channel-bit post-amble �PoA� including the third sync data �Sync�3�. The third sync data also includes a 24-bit sync body and 6-bit sync ID. The third sync ID is �000 001�(FS0).
The guard �Guard�2� is created to prevent overlap between previously-recorded data and new data to be recorded and may have 27 repetitions of a 20-channel-bit pattern to indicate the end of a previously-recorded area, namely, a just-recorded RUB.
SUMMARY OF THE INVENTION In exemplary embodiments, the present invention is directed to a recording medium, such as a high-density and/or read-only recording medium that has the same or similar physical recording format, including a linking area, in order to improve reproduction compatibility with a high-density and/or rewritable recording medium, and to methods and apparatuses for forming, recording, and reproducing the recording medium.
In an exemplary embodiment, the present invention is directed to a recording medium including a data area including at least two data sections and a linking area to link neighboring data sections, the linking area including dummy data.
In another exemplary embodiment, the present invention is directed to a method of forming a recording medium including forming a linking area to link neighboring data sections of a data area while recording data onto the recording medium and writing dummy data in the linking area to link the neighboring data sections.
In another exemplary embodiment, the present invention is directed to a method of reproducing data from a recording medium including utilizing a linking area, including dummy data, which links neighboring data sections of a data area, to reproduce the data.
In another exemplary embodiment, the present invention is directed to a method of recording data on a recording medium including utilizing a linking area, including dummy data, which links neighboring data sections of a data area, to record the data.
In another exemplary embodiment, the present invention is directed to an apparatus for reproducing data from a recording medium, the apparatus utilizing a linking area, including dummy data, which links neighboring data sections of a data area, to reproduce the data.
The Run-in area in accordance with an exemplary embodiment of the present invention may be, as shown in FIG. 3 a, composed of a guard �Guard�1�and a preamble �PrA� that includes two sync data. Each sync data may include 24-bit sync body and 6-bit sync ID.
While sync IDs of sync data in a preamble of a BD-RE may be �000 100� and �010 000� as shown in FIG. 2 a, the preamble of a BD-ROM structured in accordance with exemplary embodiments of the present invention may include two sync data whose IDs are FS0(�000 001�) (Sync�3) and FS6(�010 000�) (Sync�2). The sync data �Sync�3� may be placed ahead of the sync data �Sync�2�.
In addition, the post-amble �PoA� in the Run-out area of a BD-ROM structured in accordance with exemplary embodiments of the present invention, as shown in FIG. 3 b, may include sync data whose ID is FS4(�000 100�) (Sync�1). This is different from a BD-RE in that sync data with sync ID of FS0(�000 001�) is written in the post-amble of a BD-RE.
In the case of a BD-RE, if two RUBs are created, a pair of Run-in and Run-out areas are formed, as illustrated in FIG. 1 c. The pair of Run-in and Run-out areas (that correspond to a linking area) include three sync data whose recording order is �Sync�1�, �Sync�2� and �Sync�3�. The recording order of the BD-ROM may be �Sync�3�, �Sync�2� and �Sync�1� which is in a reverse order of the BD-RE.
In the above exemplary embodiment, the Run-in, Run-out and the guard �Guard�3� areas may include information similar to the corresponding recorded areas of a BD-RE.
In an exemplary embodiment of the present invention, at least one linking frame of the two shown in FIG. 4 a-4 d may use a new frame sync �FS n� that is different in sync ID from the seven frame syncs used for BD-RE. Examples of the sync ID of the new frame sync �FS n� are �100 101�(FS7), �101 010�(FS8), �010 101�(FS9), or �101 001�(FS10), as shown in FIG. 5.
The Prohibit RMTR constraint, which ensures stable detection of an RF signal, states that a minimum run length 2T, namely, �01� or �10� must not be repeated continuously more than six times. Therefore, a frame sync with a smaller transition frequency may be used, namely, �100 101�(FS7) or�101 001�(FS10) among the new frame syncs to make successive bit trains satisfy the Prohibit RMTR constraint. The usage of frame syncs is explained in more detail with reference to FIGS. 6 a-6 b. The first case illustrated in FIG. 6 b is the exemplary embodiment of FIGS. 3A and 3B. In this exemplary embodiment, two 1932-channel-bit recording frames are recorded in a linking area and each recording frame is composed of a frame sync, a physical address, user data, and parity. At least one of the two recording frames may include the newly-defined frame sync �FS n�.
For instance, the frame sync �FS0� with its identifying pattern (ID)�000 001� may be written as the first frame sync while the new frame sync �FS n�, whose sync identifying pattern is�010 101�, �101 010�, �100 101�, or �101 001� is written in the second.
A second case illustrated in FIG. 6 b is the exemplary embodiment of FIG. 4A. In this exemplary embodiment, two 1932-channel-bit recording frames may be recorded in a linking area and each recording frame may be composed of a frame sync, a physical address, user data, and parity. At least one of the two recording frames includes the frame sync FS0(�000 001�) and another one of the newly-defined frame syncs �FS n�.
For instance, the frame sync FS0 with its identifying pattern �000 001� is written as the first frame sync while the new frame sync FS 10 whose sync identifying pattern is �101 001� is written in the second.
In the event that the new frame sync �FS 10� is used, the RMTR constraint of 17PP modulation codes defined for data recording on a BD-RE is automatically satisfied. Consequently, the following physical address need not be started with �00�.
For instance, both the first and the second frame syncs use one of the new frame syncs, such as, FS7(�010 101�), FS8(�101 010�), or FS9(�100 101�).
In case that the new frame sync FS7(�100 101�) is used, the RMTR constraint can be satisfied by writing user data space following the frame sync having data other than �01 11 01 11�.
A fourth case illustrated in FIG. 6 b is the exemplary embodiment of FIG. 4C. In this exemplary embodiment, two 1932-channel-bit recording frames may be recorded in a linking area and each recording frame may be composed of a frame sync, a physical address, user data, and parity. Both recording frames may include the new frame sync FS10(�101 001�, as an example.
In the event that the new frame sync �FS 10� is used for both data frames, the RMTR constraint of 17PP modulation codes defined for data recording on a BD-RE is automatically satisfied. Consequently, the physical address following each frame sync need not be started with bits �00�.
For instance, if a current recording frame is the seventh, namely, recording frame #6, its frame sync is FS1 as shown in FIG. 1 d. However, the frame sync FS1 is also written in the frames #1, #23, and #24, so that previously-detected frame sync is used to identify the current frame. The currently-detected frame sync FS1 and the previously-detected frame sync or syncs FS4, FS 1, and/or FS3, which are respectively in the frames #5, #4, and #3, enable the current frame to be identified.
Using only FS7 is shown in FIG. 7 b. As shown in the case (1) of FIG. 7 b, the frame sync sequence before the frame #0 is FS7/FS2, FS7/FS4 and FS2/FS4 and the frame #0 is the first address unit or the middle unit of RUB. As the case (2) shows, the frame sync sequence before the frame #1 is FS0, FS7/FS2 and FS7/FS4 and the frame #1 is the first or the middle unit of RUB. In addition, as the case (3) shows, the frame sync sequence before the frame #2 is FS 1, FS0 and FS2 and the frame #2 is also the first or the middle unit of RUB.
However, as depicted in the �B�-marked case of FIG. 7 b, the first linking �frame�(frame #31) and the second linking frame (frame #32), which are in accordance with exemplary embodiments of the present invention, have the same frame sync sequence at frames N and N-3, which could cause a problem in defining a linking area. However, because the two linking frames have the newly-defined frame sync FS7, this case of FS7-FS7 would make it easier to detect a linking area, than the case of FS0-FS7 of FIG. 7 a. FIG. 7 c shows the case where FS7 and FS8 are used. As the case (1) shows, the frame sync sequence ahead of the frame #0 is FS8/FS2, FS7/FS4 and FS2/FS4 and the frame #0 is the first or the middle address unit of RUB. As the case (2) shows, the frame sync sequence before the frame #1 is FS0, FS8/FS2 and FS7/FS4 and the frame #1 is the first or the middle unit of RUB.
In addition, as the case (3) shows, the frame sync sequence ahead of the frame #2 is FS 1, FS0 and FS7/FS2 and the frame #2 is also the first and the middle unit of RUB.
As shown in FIG. 7 c, the use of FS7 and FS8 does not reveal same previous frame sync sequence before any frame, namely, the previous frame sync sequence before any frame is unique, therefore, there is no problem in detecting a linking area.
In the third alternative, an AUN of a physical cluster #k closet before the first linking frame is written in the first while an AUN of a physical cluster #k�1 closest behind the second linking frame is written in the second.
A disc player, that includes an optical pickup 11, a VDP system 12, and a D/A converter 13 as depicted in FIG. 9, can more accurately detect a physical address and user data within the first and the second linking frame (Recording Frames #k�1, #k�2) of a BD-ROM when it is placed therein. More particularly, if the user data contains useful information for anti-piracy or servo-control, the disc player can conduct an operation to use the useful information.
In the linking frame structure shown in FIG. 4 d, there are at least two alternatives for writing a physical address in each of three recording frames of a linking area as shown in FIG. 10 b. A first alternative writes in three linking frames an AUN of a physical cluster #k�1 closest behind the frames, and a second alternative writes an AUN of a physical cluster #k closest before the frames.
A disc player, that includes an optical pickup 11, a VDP system 12, and a D/A converter 13 as depicted in FIG. 9, can more accurately detect a physical address and user data within the successive three linking frames (Recording Frames #k�1, #k�2, #k�3) of a BD-ROM when it is placed therein. More particularly, if the user data contains useful information for anti-piracy or servo-control, the disc player can conduct an operation to use the useful information.
FIG. 10 c shows another exemplary embodiment of the present invention that writes an address in a recording frame. Each of the linking frames (Recording Frames #k�1, #k�2) contains a 9-byte physical address where 4-byte actual address is included. The 4-byte actual address may have same value with 16 AUNs #0�#15 written in a physical cluster before or behind the linking frames.
As previously mentioned, the 4-byte actual address of the first linking frame includes an address written in the physical address located therebefore. For example, the 4-byte actual address of the first linking frame has the address value of the closest 16-th AUN (AUN #15) of 27-bit and �11110�, as shown in FIG. 10 c. In this case, the last 1-bit�0� of the five bits �11110� to be written in the first linking frame can be replaced with �1� in order to indicate that a physical address is written in a linking area other than a physical cluster.
In addition, the 4-byte actual address of the second linking frame may include an address written in the physical address located thereafter. For example, the 4-byte actual address of the second linking frame has the address value of the closest first AUN (AUN #0) of 27-bit and �00000�, as shown in FIG. 10 c. In this case, the last 1-bit�0�of the five bits �00000� to be written in the second linking frame can be replaced with �1� in order to indicate that a physical address is written in a linking area other than a physical cluster.
Instead of a physical address, a part of frame sync pattern or some repetitions of bite �10� can be used as a scrambling key to scramble user data. Moreover, instead of a physical address to be written in a linking frame, one address among 16 addresses included in a physical cluster before or behind a current linking frame may also be used, especially, an address closest to a current linking frame can be used among the 16 addresses.
The successive 155 scrambling bytes (S0�S154) can be exclusive-ORed with successive 155 user bytes (D0�D154) by an exclusive-OR gate 102′. As a result, 155 scrambled user data (D′0D′154) are produced and they are written in a recording frame in a linking area.
A pair of �00000/11110�or �00001/11111� may be used as address identifier. In case of using the former (or the latter), �00000� (or �00001�) is inserted in a physical address in one linking frame while �11110� (or �11111�) is inserted in the other linking frame.
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