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Publication numberUS20040004921 A1
Publication typeApplication
Application numberUS 10/418,300
Publication dateJan 8, 2004
Filing dateApr 18, 2003
Priority dateApr 24, 2002
Also published asCA2483163A1, CA2483163C, CN1321409C, CN1659633A, EP1497826A1, EP1497826A4, US7804749, US20060050619, US20060203662, WO2003091998A1
Publication number10418300, 418300, US 2004/0004921 A1, US 2004/004921 A1, US 20040004921 A1, US 20040004921A1, US 2004004921 A1, US 2004004921A1, US-A1-20040004921, US-A1-2004004921, US2004/0004921A1, US2004/004921A1, US20040004921 A1, US20040004921A1, US2004004921 A1, US2004004921A1
InventorsKyung-geun Lee, Jung-Wan Ko, In-sik Park
Original AssigneeLee Kyung-Geun, Jung-Wan Ko, Park In-Sik
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Optical information storage medium and method of and apparatus for recording data thereon
US 20040004921 A1
Abstract
An optical information storage medium and a method of recording thereon. The optical information storage medium has a lead-in area, a user data area and a lead-out area, and data indicating a maximum and/or a minimum writing speed, maximum and minimum writing speeds, or compatible writing speeds is recorded in a recordable region of at least one of the lead-in area and the lead-out area. The optical information storage medium and the method of recording on the media enable a disc drive to reliably record data on a disc which cannot achieve a prescribed recording speed due to manufacturing conditions, at an optimal speed considering the pre-recorded writing speed data.
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Claims(86)
What is claimed is:
1. An optical information storage medium having a lead-in area, a user data area, and a lead-out area, wherein a maximum writing speed is recorded in at least one of the lead-in area and the lead-out area.
2. The medium of claim 1, wherein the at least one of the lead-in area and the lead-out area comprises a recordable region, and the maximum writing speed is recorded in the recordable region.
3. The medium of claim 2, wherein the other one of the lead-in area and the lead-out area comprises another recordable region, and the maximum writing speed is recorded in the recordable region and the another recordable region of both the lead-in area and the lead-out area.
4. The medium of claim 2, wherein the recordable region comprises a disc ID zone in which disc ID information is recorded, and which comprises at least one disc ID information region and a reserved region, and the maximum writing speed is recorded in the at least one disc ID information region or the reserved region.
5. The medium of claim 4, wherein the recordable region comprises a predetermined byte, and the maximum writing speed is recorded as a speed flag by using at least one bit of the predetermined byte of the recordable region.
6. The medium of claim 2, wherein the recordable region comprises a predetermined byte, and the maximum writing speed is recorded as a speed flag by using at least one bit of the predetermined byte of the recordable region.
7. The medium of claim 2, wherein a minimum writing speed is further recorded in the recordable region of the at least one of the lead-in area and the lead-out area.
8. The medium of claim 7, wherein the recordable region comprises a disc ID zone in which disc ID information is recorded, and which comprises at least one disc ID information region and a reserved region, and the maximum writing speed and the minimum writing speed are recorded in the at least one disc ID information region or the reserved region.
9. The medium of claim 7, wherein the recordable region comprises a predetermined byte, and the maximum writing speed and the minimum writing speed are each recorded as a speed flag by using at least one bit of the predetermined byte of the recordable region.
10. The medium of claim 7, wherein the other one of the lead-in area and the lead-out area comprises another recordable region, and the maximum writing speed and the minimum writing speed are recorded in the recordable region and the another recordable region of both the lead-in area and the lead-out area.
11. An optical information storage medium having a lead-in area, a user data area and a lead-out area, wherein information indicating compatible writing speeds is recorded in at least one of the lead-in area and the lead-out area.
12. The medium of claim 10, wherein the at least one of the lead-in area and the lead-out area comprises a recordable region, and the information indicating the compatible writing speeds is recorded in the recordable region.
13. The medium of claim 12, wherein the recordable region comprises a predetermined byte, and the information on each of the compatible writing speeds is recorded by a corresponding bit of the predetermined byte of the recordable region.
14. The medium of claim 13, wherein the recordable region comprises a disc ID zone in which disc ID information is recorded, and which has at least one disc ID information region and a reserved region, and the information indicating the compatible writing speeds is recorded in the at least one disc ID information region or the reserved region.
15. The medium of claim 13, wherein the other one of the lead-in area and the lead-out area comprises another recordable region, and the information indicating the compatible writing speeds is recorded in the recordable region and the another recordable region of both the lead-in area and the lead-out area.
16. The medium of claim 12, wherein the recordable region comprises a disc ID zone in which disc ID information is recorded and which has at least one disc ID information region and a reserved region, and the information indicating the compatible writing speeds is recorded in the at least one disc ID information region or the reserved region.
17. A method of recording data on an optical information storage medium having a lead-in area, a user data area, and a lead-out area, the method comprising:
recording a maximum writing speed in at least one of the lead-in area and the lead-out area; and
recording the data on the optical information storage medium at an optimal speed determined based on the maximum wiring speed.
18. The method of claim 16, wherein the at least one of the lead-in area and the lead-out area comprises a recordable region, and the recording of the maximum writing speed comprises:
recording the maximum writing speed in the recordable region.
19. The method of claim 18, wherein the other one of the lead-in area and the lead-out area comprises another recordable region, and the recording of the maximum writing speed comprises:
recording the maximum writing speed in the recordable region and the another recordable region of both the lead-in area and the lead-out area.
20. The method of claim 18, wherein the recordable region comprises a disc ID zone in which disc ID information is recorded, and which has at least one disc ID information region and a reserved region, and the recording of the maximum writing speed comprises:
recording the maximum writing speed in the at least one disc ID information region or the reserved region.
21. The method of claim 18, wherein the recordable region comprises a predetermined byte, and the recording of the maximum writing speed comprises:
recording the maximum writing speed as a speed flag by using at least one bit of the predetermined byte of the recordable region.
22. The method of claim 18, wherein the recordable region comprises a predetermined byte, and the recording of the maximum writing speed comprises:
recording the maximum writing speed as a speed flag by using at least one bit of the predetermined byte of the recordable region.
23. The method of claim 18, wherein the recording of the maximum writing speed comprises:
recording a minimum writing speed in the recordable region of the at least one of the lead-in area and the lead-out area.
24. The method of claim 23, wherein the other one of the lead-in area and the lead-out area comprises another recordable region, and the recording of the maximum writing speed and the minimum writing speed comprises:
recording the maximum writing speed and the minimum writing speed in the recordable region and the another recordable region of both the lead-in area and the lead-out area.
25. The method of claim 23, wherein the recordable region comprises a disc ID zone in which disc ID information is recorded, and which comprises at least one disc ID information region and a reserved region, and the maximum writing speed and the minimum writing speed are recorded in the at least one disc ID information region or the reserved region.
26. The method of claim 23, wherein the recordable region comprises a predetermined byte, and the recording of the maximum writing speed and the minimum writing speed comprises:
recording the maximum writing speed and the minimum writing speed as a speed flag by using at least one bit of a predetermined byte of the recordable region.
27. A method of recording data on an optical information storage medium having a lead-in area, a user data area and a lead-out area, the method comprising:
recording information indicating compatible writing speeds in a recordable region of at least one of the lead-in area and the lead-out area; and
recording the data on the optical information storage medium at an optimal speed determined based on a maximum writing speed corresponding to one of the compatible writing speeds.
28. The method of claim 24, wherein the at least one of the lead-in area and the lead-out area comprises a recordable region, and the recording of the information indicating the compatible writing speeds comprises:
recording the information indicating the compatible writing speeds in the recordable region.
29. The method of claim 28, wherein the recordable region comprises a predetermined byte, and the recording of the information indicating each of the compatible writing speeds comprises:
recording a corresponding bit of the predetermined byte of the recordable region.
30. The method of claim 28, wherein the recordable region comprises a disc ID zone in which disc ID information is recorded, and which has at least one disc ID information region and a reserved region, and the recording of the information indicating the compatible writing speeds comprises:
recording the information in the at least one disc ID information region or the reserved region.
31. A method of recording data on an optical information storage medium having a lead-in area, a user data area, and a lead-out area in a reproducing apparatus, the method comprising:
reading information representing a writing speed from a recordable region of at least one of the lead-in area and the lead-out area; and
recording the data on the optical information storage medium at the writing speed of the information.
32. The method of claim 31, wherein the at least one of the lead-in area and the lead-out area comprises a recordable region, and the reading of the information representing the writing speed comprises:
reading the information representing the writing speed from the recordable region.
33. The method of claim 32, further comprising:
recording the information in the recordable region of at least one of the lead-in area and the lead-out area.
34. The method of claim 32, wherein the at least one of the lead-in area and the lead-out area comprises an embossed data zone, a mirror zone, and a rewriting data zone, and the recordable region is disposed in the rewriting data zone, and the method further comprises:
recording the information in the rewriting data zone of at least one of the lead-in area and the lead-out area at the writing speed.
35. The method of claim 34, wherein the embossed data zone of the at least one of the lead-in area and the lead-out area comprises another information representing another writing speed, and the recording of the data comprises:
recording the data at the writing speed instead of the another writing speed.
36. The method of claim 32, wherein the writing speed comprises a maximum writing speed and a minimum writing speed, and the recording of the data comprises:
recording the data on the optical information storage medium at one of the maximum writing speed and the minimum writing speed.
37. The method of claim 32, wherein the writing speed comprises a maximum writing speed and a minimum writing speed, and the recording of the data comprises:
recording the data on the optical information storage medium at a speed between the maximum writing speed and the minimum writing speed.
38. The method of claim 32, wherein the recording of the data comprises:
rotating the optical information storage medium at the writing speed according to the read information.
39. The method of claim 32, wherein the recordable region of the at least one of the lead-in area and the lead-out area comprises a byte representing the writing speed, and the reading of the information comprises:
reading the byte from the recordable region of the at least one of the lead-in area and the lead-out area to obtain the information.
40. The method of claim 32, wherein the recordable region of the at least one of the lead-in area and the lead-out area comprises at least two bits representing the writing speed, and the reading of the information comprises:
reading the at least two bits from the recordable region of the at least one of the lead-in area and the lead-out area to obtain the information.
41. The method of claim 32, wherein the writing speed comprises a maximum writing speed and a minimum writing speed, the recordable region of the at least one of the lead-in area and the lead-out area comprises first bits representing the maximum writing speed and second bits representing the minimum writing speed, and the reading of the information comprises:
reading the first bits and the second bits from the recordable region of the at least one of the lead-in area and the lead-out area to obtain the information.
42. The method of claim 41, wherein the number of the first bits and the number of the second bits are the same.
43. The method of claim 41, wherein a sum of the number of the first bits and the number of the second bits is 8 bits.
44. The method of claim 41, wherein the recording of the data on the optical information storage medium comprises:
recording the data in the user data area of the optical information storage medium at one of the first and second writing speeds according to the first and second information.
45. The method of claim 32, wherein the reproducing apparatus comprises a disc drive able to rotate the optical information storage medium at a speed between a maximum writing speed and a maximum writing speed to record the data on the optical information storage medium, and the writing speed is the maximum writing speed of the disc drive.
46. The method of claim 32, wherein the writing speed comprises a plurality of sub-writing speeds, the recordable region of the at least one of the lead-in area and the lead-out area comprises a plurality of bits each representing a corresponding one of the sub-writing speeds, and the reading of the information comprises:
reading the bits from the recordable region of the at least one of the lead-in area and the lead-out area to obtain the sub-writing speeds.
47. The method of claim 46, wherein the reading of the bits comprises:
recording the data on the optical information storage medium at one of the sub-writing speeds corresponding to one of the bits.
48. The method of claim 46, wherein the bits are arranged to represent corresponding ones of the sub-writing speeds according to a bit position of the bits in the recordable region.
49. The method of claim 48, wherein the bits each have a writing characteristic of the corresponding one of the sub-writing speeds.
50. The method of claim 49, wherein each of the bits comprises one of a first state and a second state, the first state indicates that the reproducing apparatus records the data on the optical information storage medium at the corresponding sub-writing speed according to the first state, and the second state indicates that the reproducing apparatus does not record the data on the optical information storage medium at the corresponding sub-writing speed according to the second state.
51. The method of claim 50, wherein the recording of the data on the optical information storage medium at the one of the sub-writing speeds corresponding to one of the bits, comprises:
preventing the reproducing apparatus to record the data at the one of the sub-writing speeds corresponding to one of the bits when the one of the bits is the second state.
52. The method of claim 32, wherein the writing speed comprises first through Nth sub-writing speeds, the recordable region of the at least one of the lead-in area and the lead-out area comprises first through Nth bits representing the first through N sub-writing speeds according to bit positions of the first through Nth bits, respectively, N is a natural number, and the reading of the information comprises:
reading the first through Nth bits from the recordable region of the at least one of the lead-in area and the lead-out area to obtain the first through Nth sub-writing speeds.
53. The method of claim 52, wherein each of the first through Nth bits comprises one of a first state and a second state, the first state indicates that the data is recorded on the optical information storage medium at one of the first through Nth sub-writing speeds corresponding to one of the first through Nth bits, and the second state indicates that the data is recorded on the optical information storage medium at one of the first through Nth sub-writing speeds corresponding to one of the first through Nth bits.
54. The method of claim 53, wherein the recording of the data comprises:
preventing the reproducing apparatus from recording the data at the one of the first through Nth sub-writing speeds corresponding to the one of the first through Nth bits when the one of the first through Nth bits is the second state.
55. The method of claim 53, wherein the recording of the data comprises:
allowing the reproducing apparatus to record the data at one of the first through Nth sub-writing speeds corresponding to the one of the first through Nth bits having the first state.
56. A method of reading data from an optical information storage medium having a lead-in area, a user data area, and a lead-out area in a reproducing apparatus, the method comprising:
reading information representing a writing speed from a recordable region of at least one of the lead-in area and the lead-out area; and
rotating the optical information storage medium at the writing speed according to the read information.
57. A method of reading data from an optical information storage medium having a lead-in area, a user data area, and a lead-out area in a reproducing apparatus, one of the lead-in and lead-in areas having an embossed data zone, a mirror zone, and a rewriting data zone, the method comprising:
reading information representing a writing speed from the one of the lead-in area and the lead-out area; and
rotating the optical information storage medium at the writing speed according to the read information
58. The method of claim 57, wherein the reading of the information representing the writing speed comprises:
reading the information representing the writing speed from the rewriting data zone of the one of the lead-in area and the lead-out area.
59. The method of claim 58, wherein the rewriting data zone of the one of the lead-in and lead-out areas comprises a disc test zone, a drive test zone, a disc ID zone, and a defect management zone, and the reading of the information comprises:
reading the information from one of the disc test zone, the drive test zone, the disc ID zone, and the defect management zone
60. The method of claim 59, wherein the disc ID zone of the rewriting data zone of the one of the lead-in and lead-out areas comprises at least one of disc ID information regions and a reserved region, and the reading of the information comprises:
reading the information from the at least one of the at least one of the disc ID information regions and the reserved region.
61. A method of reading data from an optical information storage medium having a lead-in area, a user data area, and a lead-out area in a reproducing apparatus, one of the lead-in and lead-in areas having an embossed data zone, a mirror zone, and a rewriting data zone, the method comprising:
reading first information representing a first writing speed from the embossed data zone of the lead-in area;
reading second information representing a second writing speed from the one of the lead-in area and the lead-out area; and
rotating the optical information storage medium at the writing speed according to the read second information instead of the first writing speed of the first information.
62. The method of claim 61, wherein the reading of the second information representing the second writing speed comprises:
reading the second information representing the second writing speed from the rewriting data zone of the one of the lead-in area and the lead-out area.
63. A method of reading data from an optical information storage medium having a lead-in area, a user data area, and a lead-out area in a reproducing apparatus, one of the lead-in and lead-in areas having an embossed data zone having first information representing a first writing speed, a mirror zone, and a rewriting data zone, the method comprising:
reading second information representing a second writing speed from the one of the lead-in area and the lead-out area; and
rotating the optical information storage medium at the writing speed according to the read second information instead of the first writing speed of the first information.
64. The method of claim 63, wherein the reading of the second information representing the second writing speed comprises:
reading second information representing the second writing speed from the rewriting data zone of the one of the lead-in area and the lead-out area.
65. A method of recording data on an optical information storage medium having a lead-in area, a user data area, and a lead-out area in a reproducing apparatus, one of the lead-in and lead-in areas having an embossed data zone having first information representing a first writing speed, a mirror zone, and a rewriting data zone, the method comprising:
reading second information representing a second writing speed from the one of the lead-in area and the lead-out area; and
recording the data on the optical information storage medium at the second writing speed according to the read second information instead of the first writing speed of the first information.
66. The method of claim 65, wherein the reading of the second information representing the second writing speed comprises:
reading second information representing the second writing speed from the rewriting data zone of the one of the lead-in area and the lead-out area.
67. A method of recording data from an optical information storage medium having a lead-in area, a user data area, and a lead-out area in a reproducing apparatus, one of the lead-in and lead-out areas having an embossed data zone having first information representing a first writing speed, a mirror zone, and a rewriting data zone, the method comprising:
recording information representing a writing speed in the writing data zone of at least one of the lead-in area and the lead-out area.
68. The method of claim 67, wherein the writing data zone of the at least one of the lead-in area and the lead-out area comprises a recordable region, and the recording of the information representing the writing speed comprises:
recording the information representing the writing speed in the recordable region of the rewriting data zone of the one of the lead-in area and the lead-out area.
69. A method of recording data from an optical information storage medium having a lead-in area, a user data area, and a lead-out area in a reproducing apparatus, one of the lead-in and lead-out areas having an embossed data zone having first information representing a first writing speed, a mirror zone, and a rewriting data zone, the method comprising:
erasing first information representing a first writing speed, which is recorded in the writing data zone of at least one of the lead-in area and the lead-out area; and
recording second information representing a second writing speed in the writing data zone of the at least one of the lead-in area and the lead-out area.
70. The method of claim 69, wherein the writing data zone of the at least one of the lead-in area and the lead-out area comprises a recordable region, and the erasing of the first information representing the first writing speed and the recording of the second information comprise:
erasing the first information representing the first writing speed, which is recorded in a recordable region of the writing data zone of the at least one of the lead-in area and the lead-out area; and
recording second information representing a second writing speed in the recordable region of the writing data zone of the at least one of the lead-in area and the lead-out area.
71. An optical information storage medium having a lead-in area having an embossed data zone, a mirror zone, and a rewriting data zone, a user data area, and a lead-out area, wherein at least one of the lead-in area and the lead-out area comprises an embossed data zone, a mirror zone, and a rewriting data zone, and a writing speed is recorded in the at least one of the lead-in area and the lead-out area.
72. The medium of claim 71, wherein another writing speed is recorded in the embossed data zone.
73. The medium of claim 72, wherein the writing speed and the another writing speed are different.
74. The medium of claim 71, wherein the embossed data zone is not a rewratable region.
75. The medium of claim 71, wherein the rewriting data zone comprises a rewratable region, and the writing speed is recorded in the recordable region of the at least one of the lead-in area and the lead-out area.
76. The medium of claim 75, wherein:
the writing speed comprises,
a plurality of sub-writing speeds; and
the recordable region comprises,
a plurality of bits representing one of the sub-writing speeds.
77. The medium of claim 75, wherein the recordable region comprises:
first bits representing a maximum writing speed of the writing speed.
78. The medium of claim 77, wherein the recordable region comprises:
second bits representing a minimum writing speed of the writing speed.
79. The medium of claim 75, wherein:
the writing speed comprises,
a plurality of sub-writing speeds; and
the recordable region comprises,
a plurality of bits each representing a corresponding one of the sub-writing speeds.
80. The medium of claim 79, wherein the bits each has a writing characteristic corresponding to one of the sub-writing speeds.
81. The medium of claim 75, wherein the rewriting data zone of the one of the lead-in and lead-out areas comprises a disc test zone, a drive test zone, a disc ID zone, and a defect management zone, and the recordable region is included in the one of the disc test zone, the drive test zone, the disc ID zone, and the defect management zone.
82. The medium of claim 81, wherein the disc ID zone of the rewriting data zone of the one of the lead-in and lead-out areas comprises at least one of disc ID information region and a reserved region, and the recordable region is included in one of the at least one disc ID information region or the reserved region.
83. An apparatus of reading data from an optical information storage medium having a lead-in area, a user data area, and a lead-out area in a reproducing apparatus, comprising:
a servo unit reading information representing a writing speed from at least one of the lead-in area and the lead-out area, and rotating the optical information storage medium at the writing speed.
84. The apparatus of claim 83, wherein the at least one of the lead-in area and the lead-out area comprises a recordable region, and the servo unit reads the information representing the writing speed from the recordable region of the at least one of the lead-in area and the lead-out-area.
85. The apparatus of claim 83, wherein the data is read from the optical information storage medium at the writing speed.
86. The apparatus of claim 83, wherein the data is recorded on the optical information storage medium at the writing speed.
Description
    CROSS-REFERENCE TO RELATED APPLICATIONS
  • [0001]
    This application claims the priority of Korean Patent Application No. 2002-22460, filed on Apr. 24, 2002, Korean Patent Application No. 2002-24830, filed on May 6, 2002, and Korean Patent Application No. 2002-25679, filed on May 9, 2002 in the Korean Intellectual Property Office, the disclosures of which are incorporated herein in their entirety by reference.
  • BACKGROUND OF THE INVENTION
  • [0002]
    1. Field of the Invention
  • [0003]
    The present invention relates to an optical information storage medium and a method of recording data thereon, and more particularly, to an optical information storage medium in which data indicating a maximum writing speed, maximum and/or minimum writing speeds, or compatible writing speeds is recorded in a recordable region other than a user data area so that a disc drive can recognize the data and record information on the optical information medium at an optimal speed, and a method of recording the data on the medium.
  • [0004]
    2. Description of the Related Art
  • [0005]
    An optical information storage medium, e.g., an optical disc, is generally employed as an information storage medium of an optical pick-up device that records and reproduces information on and from the optical disc without contacting the optical disc. Optical discs include compact discs (CDs) and digital versatile discs (DVDs), which have different storage capacities. In addition, various sub-categories of the optical discs include CD-Recordables (CD-Rs), CD-Rewritables (CD-RWs), Digital Versatile Disc-rewritables (DVD−RWs), Digital Versatile Disc-Random Access Memories (DVD-RAMs), and Digital Versatile Disc Rewritables (DVD+RWs).
  • [0006]
    As a recording speed of the optical discs increases, performance of disc drives has been improved to record data on the optical disc at the increased recording speed. In order to perform reliable recording, the disc drives operate such that they can satisfy recording characteristics accompanying the recording speed of the optical disc. However, while general disc drives reliably record data on low-speed discs, they do not satisfy the recording characteristics of high-speed discs, and thus they frequently cause damage to user data. Likewise, the disc drives for the high-speed discs can cause the damage to the user data when recording the information on the low-speed discs.
  • [0007]
    Accordingly, information on the recording speed of the optical disc is necessary for reliably recording data. The information is recorded in a predetermined region of the optical disc, and the disc drive recognizes the prescribed recording speed of the optical disc and records data on the optical disc at an optimal speed. For example, in a case of a 2-speed disc, the information on the recording speed of the 2-speed disc is recorded on a predetermined region of the 2-speed disc when the 2-speed disc is manufactured, and thus a disc drive can refer to the prescribed recording speed and the accompanying recording characteristics and thus can record the data on the 2-speed disc at a speed of 2.
  • [0008]
    However, the prescribed recording speed of a disc is not sometimes satisfied in a disc test. For example, a 4-speed disc is manufactured, and the information on the recording speed of the 4-speed disc, i.e., 4, is recorded on a predetermined region of the 4-speed disc, but due to various factors during manufacturing the 4-speed disc, the recording speed of the 4-speed disc does not reach the prescribed 4 speed. Such a disc cannot be used as the 4-speed disc, but it may be appropriate to be used at an actual recording speed, such as a 3-speed disc or a 2-speed disc. If the above-described disc is used, the disc drive recognizes the disc as the 4-speed disc because the recording speed is recorded as the 4 speed, and thus the disc drive records the data on the 4-speed disc at the prescribed 4 speed. However, the actual recording speed is not 4, and thus the recorded data can be damaged. Therefore, such discs which are manufactured to be 4-speed discs but turn out to be 3-speed discs or 2-speed discs, cannot be used and are discarded.
  • [0009]
    It is very wasteful to discard the discs which fail to achieve a desired recording speed due to various manufacturing conditions but achieve a lower recording speed.
  • SUMMARY OF THE INVENTION
  • [0010]
    The present invention provides an optical information storage medium which is capable of reliably recording user data at an optimal speed according to information indicating the medium's maximum writing speed, maximum and minimum writing speeds, or compatible writing speeds stored in a recordable region other than a user data area, and a method of recording on the medium.
  • [0011]
    Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
  • [0012]
    According to one aspect of the present invention, an optical information storage medium includes a lead-in area, a user data area, and a lead-out area, wherein a maximum writing speed is recorded in a recordable region of at least one of the lead-in area and the lead-out area.
  • [0013]
    The maximum writing speed is recorded in recordable regions of both the lead-in area and the lead-out area.
  • [0014]
    The recordable region includes a disc ID zone in which disc ID information is recorded and which has at least one disc ID information region and a reserved region, and the maximum writing speed is recorded in at least one disc ID information region or the reserved region.
  • [0015]
    A minimum writing speed is further recorded in the recordable region of at least one of the lead-in area and the lead-out area.
  • [0016]
    According to another aspect of the present invention, an optical information storage medium includes a lead-in area, a user data area and a lead-out area, wherein information indicating compatible writing speeds is recorded in a recordable region of at least one of the lead-in area and the lead-out area.
  • [0017]
    Information on each of the compatible writing speeds is recorded by a corresponding bit of a predetermined byte of the recordable region.
  • [0018]
    According to yet another aspect of the present invention, a method of recording on an optical information storage medium having a lead-in area, a user data area, and a lead-out area includes recording a maximum writing speed in a recordable region of at least one of the lead-in area and the lead-out area; and recording data on the optical information storage medium at an optimal speed determined based on the maximum wiring speed.
  • [0019]
    According to yet another aspect of the present invention, a method of recording on an optical information storage medium having a lead-in area, a user data area and a lead-out area includes recording information indicating compatible writing speeds in a recordable region of at least one of the lead-in area and the lead-out area; and recording data on the optical information storage medium at an optimal speed determined based on the maximum writing speed.
  • [0020]
    According to another aspect to the present invention, a method of recording data on an optical information storage medium having a lead-in area, a user data area, and a lead-out area in a reproducing apparatus includes reading information representing a writing speed from a recordable region of at least one of the lead-in area and the lead-out area, and recording the data on the optical information storage medium at the writing speed of the information.
  • [0021]
    According to another aspect to the present invention, a method of reading data from an optical information storage medium having a lead-in area, a user data area, and a lead-out area in a reproducing apparatus includes reading information representing a writing speed from a recordable region of at least one of the lead-in area and the lead-out area, and rotating the optical information storage medium at the writing speed according to the read information.
  • [0022]
    According to another aspect to the present invention, a method of recording data from an optical information storage medium having a lead-in area, a user data area, and a lead-out area in a reproducing apparatus, one of the lead-in and lead-in areas having an embossed data zone having first information representing a first writing speed, a mirror zone, and a rewriting data zone includes erasing first information representing a first writing speed, which is recorded in a recordable region of the writing data zone of at least one of the lead-in area and the lead-out area, and recording second information representing a second writing speed in the recordable region of the writing data zone of the at least one of the lead-in area and the lead-out area.
  • [0023]
    According to another aspect to the present invention, an optical information storage medium having a lead-in area having an embossed data zone, a mirror zone, and a rewriting data zone, a user data area, and a lead-out area, wherein at least one of the lead-in area and the lead-out area includes an embossed data zone, a mirror zone, and a rewriting data zone having a rewratable region, and a writing speed is recorded in the recordable region of the at least one of the lead-in area and the lead-out area.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0024]
    These and/or other aspects and advantages of the invention will become apparent and more readily appreciated from the following description of the preferred embodiments, taken in conjunction with the accompanying drawings of which:
  • [0025]
    [0025]FIG. 1 is a diagram of a structure of a lead-in area of an optical information storage medium according to an embodiment of the present invention;
  • [0026]
    [0026]FIG. 2 is a diagram of a structure of a part of the lead-in area of the optical information storage medium shown in FIG. 1;
  • [0027]
    [0027]FIG. 3A is a diagram explaining an optical information storage medium and a method of recording information thereon according to an embodiment of the present invention;
  • [0028]
    [0028]FIG. 3B is a diagram explaining an optical information storage medium and a method of recording information thereon according to another embodiment of the present invention;
  • [0029]
    [0029]FIG. 4 is a diagram explaining an optical information storage medium and a method of recording information thereon according to another embodiment of the present invention;
  • [0030]
    [0030]FIG. 5 is a block diagram of an apparatus for recording data and/or reproducing data on the optical information storage medium shown in FIGS. 1 through 4.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • [0031]
    Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. The embodiments are described in order to explain the present invention by referring to the figures.
  • [0032]
    [0032]FIG. 1 shows a lead-in area of an optical information storage medium, such as an optical disc, (hereinafter, collectively called “disc”), according to an embodiment of the present invention. The optical information storage medium includes the lead-in area, a user data area and a lead-out area. The lead-in area includes an embossed data zone 10 in which basic disc information is recorded in an innermost area of the disc in a form of pits, a mirror zone 20, and a rewritable (recordable) data zone 30.
  • [0033]
    The embossed data zone 10 includes a control data zone 10 a in which a prescribed recording speed of the disc is recorded. The prescribed recording speed represents a recording speed, such as a 2 speed, a 3 speed or a 4 speed, which is predetermined when the disc is designed, and the prescribed recording speed is one piece of the basic disc information recorded in the control data zone 10 a. A disc drive recognizes the prescribed recording speed when recording data on the disc, and the disc drive records the data on the disc at an optimal speed considering the prescribed recording speed recorded on the disc.
  • [0034]
    The mirror zone 20 may be a connection zone which connects the embossed data zone 10 with the rewritable data zone 30.
  • [0035]
    The rewritable data zone 30 may include a disc test zone 30 a, a drive test zone 30 b, a disc ID zone 30 c and a defect managing zone 30 d. The disc ID zone 30 c includes at least one disc ID information region in which disc ID information is recorded. In the present embodiment, first through fourth disc ID information regions 30 c-1, 30 c-2, 30 c-3 and 30c-4 are included in the disc ID zone 30 c. Also, reserved regions 30 c-5 and 30 c-6 can be further included as regions in which other information can be recorded. The lead-out area has a similar structure to the lead-in area, and thus a detailed description of the lead-out area will be omitted.
  • [0036]
    It is possible that optical information storage media satisfy the prescribed recording speed recorded in the control data zone 10 a. However, an actual recording speed may be lower than the prescribed recording speed due to disc manufacturing conditions. In this case, it is possible that information on the actual recording speed is recorded on the disc and referred to as a driving (rotation) speed of the disc in the disc drive instead of the prescribed recording speed. This is accomplished by the present invention.
  • [0037]
    A method of recording (writing) the information on the optical information storage medium (disc) according to an embodiment of the present invention includes recording a maximum writing speed of the medium in at least one recordable (rewritable) region of the lead-in area and the lead-out area. For example, the maximum writing speed can be recorded in a predetermined region of the rewritable data zone 30.
  • [0038]
    Referring to FIG. 2, the predetermined region of the writable data zone 30 includes a plurality of bytes, and the maximum writing speed can be recorded as one of the bytes. For example, a speed flag for the maximum writing speed can be recorded in a 0 byte position BP 35 of the predetermined region of the writable data zone 30. Alternatively, the maximum writing speed can be recorded in a desired byte position such as a 1-byte position BP of FIG. 2.
  • [0039]
    The 0 byte position BP 35 includes 8 bits from bit 0 through bit 7, i.e., b0 through b7, as shown in FIG. 3A, and a speed flag for the maximum writing speed can be recorded in the bit b7 and the bit b6. Other bits are left as reserved regions. More specifically, the following speed flags for the maximum writing speed can be recorded in the bit b7 and the bit b6.
  • [0040]
    In a case of a 5-speed disc, if the speed flag is 00 b, it is possible to record data on the 5-speed disc at a 5 speed. If the speed flag is 01 b, the maximum writing speed of the disc is a 2 speed. If the speed flag is 10 b, the maximum writing speed of the disc is a 3 speed. Finally, if the speed flag is 1 b, the maximum writing speed of the disc is a 4 speed.
  • [0041]
    In a 3-speed disc, if the speed flag is 00 b, it is possible to record data on the 3-speed disc at the 3 speed. If the speed flag is 01 b, the maximum recording speed is a 2-speed.
  • [0042]
    In addition, the speed flag can be includes 3 bits for the discs having a disc speed of more than a 6 speed. For example, in a 6-speed disc, if the speed flag is 000 b, it is possible to record data on the 6-speed disc at the 6 speed. If the speed flag is 001 b, the maximum writing speed is the 2 speed. If the speed flag is 010 b, the maximum writing speed is the 3 speed.
  • [0043]
    In the above examples, the speed flag of 2 or 3 bits is used to record the maximum writing speed in the recordable region. However, in some cases, the speed flag of 4-8 bits can be used. Also, it is sometimes possible to record the maximum writing speed using at least one bit of one byte of the recordable region.
  • [0044]
    The maximum writing speed is recorded in the predetermined region of the writable data zone 30 of the lead-in area, and disc drives record the data on the disc at an optimal recording speed considering the maximum writing speed of the disc.
  • [0045]
    According to an aspect of the invention, the maximum writable speed can be recorded in one of the disc ID information regions 30 c-1, 30 c-2, 30 c-3, and 30 c-4 of the disc ID zone 30 c, or one of the reserved regions 30 c-5 or 30 c-6 of the disc ID zone 30 c. In the above description, the maximum writing speed is recorded in the recordable region of the lead-in area. However, it can alternatively be recorded in a recordable region of the lead-out area at an outer portion of the medium, or in the recordable regions of both the lead-in area and the lead-out area.
  • [0046]
    In the optical information storage medium and method of recording the information on the same according to this embodiment of the present invention, the maximum writing speed is recorded in a predetermined region of the recordable region of at least one of the lead-in area and/or the lead-out area. Here, the maximum writing speed can be recorded as the speed flag by using at least one bit of predetermined bytes.
  • [0047]
    In the above description, the maximum writing speed is recorded in the 0 byte position BP. However, the maximum writing speed may be recorded in another byte position BP.
  • [0048]
    A method of recording the information on the optical information storage medium according to another embodiment of the present invention includes recording the maximum writing speed and a minimum writing speed of the medium in the recordable region of at least one of the lead-in area and the lead-out area. For example, the maximum writing speed and the minimum writing speed can be recorded in the predetermined region of the rewritable data zone 30. Here, the rewritable data zone 30 is included in the lead-out area as well as in the lead-in area.
  • [0049]
    The maximum writing speed and the minimum writing speed can be recorded in the predetermined region of the rewritable data zone 30, e.g., the disc ID information regions 30 c-1, 30 c-2, 30 c-3, 30 c-4 or the reserved regions 30 c-5 or 30 c-6. The disc ID information regions 30 c-1, 30 c-2, 30 c-3, 30 c-4 or the reserved regions 30 c-5 or 30 c-6 include a plurality of bytes, and the maximum writing speed and the minimum writing speed are recorded in one byte position BP of the bytes, as shown in FIG. 3B.
  • [0050]
    In addition, it is possible that the maximum writing speed and minimum writing speed are recorded in recordable regions of both the lead-in area and the lead-out area, in order to reliably record the data.
  • [0051]
    For example, when an 8-speed disc is found to actually be capable of recording at only 5-7 speeds in a test of its recording characteristics, the maximum writing speed is the 7 speed, and the minimum writing speed is the 5 speed. FIG. 3B shows a case where the maximum writing speed is recorded in the bits b7, b6, b5 and b4, and the minimum writing speed is recorded in the bits b3, b2, b1 and b0. The maximum writing speed and the minimum writing speed recorded by using 4 bits can be expressed as follows:
    TABLE 1
    bits Recording speed
    0000b 2 speed
    0001b 3 speed
    0010b 4 speed
    0011b 5 speed
    0100b 6 speed
    0101b 7 speed
    0110b 8 speed
    0111b 9 speed
  • [0052]
    Referring to table 1, the 5-7 speeds can be expressed by 01010011 b. Here, the maximum writing speed and the minimum writing speed are each indicated by using the 4 bits. However, the maximum writing speed and the minimum writing speed can be indicated by using 3 bits each or 2 bits each.
  • [0053]
    In this method of recording the information on the optical information storage medium, the maximum writing speed and the minimum writing speed are recorded in the recordable region of at least one of the lead-in area and the lead-out area. And, the maximum writing speed and the minimum writing speed can be recorded by using 2 through 4 bits each.
  • [0054]
    Hereinafter, a method of recording the information on the optical information storage medium, according to another embodiment of the present invention will be described. According to this embodiment of the present invention, the method includes recording the information on writing speeds in one of predetermined regions of the recordable region of at least one of the lead-in area and the lead-out area by using one bit per writing speed.
  • [0055]
    For example, the writing speed can be recorded by using one bit of the one of the predetermined regions of the rewritable data zone of FIG. 1. The writing speed is recorded in at least one of the disc ID information regions 30 c-1, 30 c-2, 30 c-3, 30 c-4 or the reserved regions 30 c-5 or 30 c-6 of the rewritable data zone 30. The disc ID information regions 30 c-1, 30 c-2, 30 c-3, 30 c-4 or the reserved regions 30 c-5 or 30 c-6 include a plurality of bytes, and the writing speed is recorded by using one of 8 bits of one byte of the bytes.
  • [0056]
    Specifically, each bit of a predetermined bite position corresponds to a respective one of different writing speeds, and any given writing speed is recorded by a corresponding bit. For example, each bit can correspond to the respective writing speed as follows:
    TABLE 2
    Bit Position (BP) Writing speed
    7 b 9 speed
    6 b 8 speed
    5 b 7 speed
    4 b 6 speed
    3 b 5 speed
    2 b 4 speed
    1 b 3 speed
    0 b 2 speed
  • [0057]
    Referring to table 2, if a bit 0 is recorded in a bit position 7b of the bit positions BPs, it is impossible to record data on the medium at a 9 speed. If a bit 1 is recorded in the bit position 7 b of the bit positions BPs, it is possible to record data on the medium at the 9 speed. If the bit 0 is recorded in a bit position 6 b of the bit positions BPs, it is impossible to record data on the medium at an 8 speed. If the bit 1 is recorded in the bit position 6 b of the bit positions BPs, it is possible to record data on the medium at the 8 speed. The same goes for bit positions 5 b, 4 b, 3 b, 2 b, 1 b, and 0 b of the bit positions BPs, and thus each bit represents the information on a corresponding one of the different writing speeds and above-described recording characteristic according to one of the 0 b and the 1 b.
  • [0058]
    According to this embodiment of the present invention, when a 9-speed disc is found to be actually capable of recording the data on the 9-speed disc at only 5-7 speeds in the test of its recording characteristics, the writing speed can be recorded as 00111000 b.
  • [0059]
    Here, the writing speed information can be recorded in the recordable regions of both the lead-in area and the lead-out area in order to reliably record the data on the medium.
  • [0060]
    According to the second and third embodiments, all writing speeds can be expressed as described above, and by the recording speed information on the all writing speeds, a high-speed disc can be compatible with a disc drive for a low-speed disc.
  • [0061]
    The writing speed information is recorded only by disc manufacturers and cannot be changed or deleted once the disc is manufactured or shipped.
  • [0062]
    As described above, the optical information storage medium and the method of recording the writing speed information thereon according to the present invention enable the disc drive to record data on the disc which cannot achieve its prescribed recording speed due to manufacturing conditions, at an optimal speed according to the information on at least one of the maximum, minimum, and compatible writing speeds of the disc. The present invention may be very important considering a current trend on higher and higher speed discs.
  • [0063]
    [0063]FIG. 5 is a block diagram of an apparatus for recording and/or reproducing data on/from the optical information storage medium according to the present invention. During recording, an AV codec 110 compression-codes an externally applied AV signal according to a predetermined compression scheme to generate compressed A/V data and supplies size information for the compressed A/V data. A digital signal processor (DSP) 120 receives the compressed A/V data supplied from the AV codec 110, adds additional data for error correction code (ECC) processing thereto, and performs modulation using a predetermined modulation scheme. A radio frequency amplifier (FR AMP) 130 converts the modulated data from the DSP 120 into a radio frequency (RF) signal. Then, a pickup 140 records the RF signal supplied from the RF AMP 130 on the optical information storage medium mounted on a turntable of the pickup 140. A servo 150 receives information necessary for servo control from a system controller 160 and stably performs a servo function for the mounted the optical information storage medium.
  • [0064]
    During playback of information data stored on the optical information storage medium, the pickup 140 picks up an optical signal from the optical information storage medium having the information data stored therein, and the information data is extracted from the optical signal. The RF AMP 130 converts the optical signal into an RF signal, and extracts a servo signal for performing the servo function, and modulated data. The DSP 120 demodulates the modulated data supplied from the RF AMP 130 corresponding to the modulation scheme used during modulation, performs an ECC process to correct errors, and eliminates added data. The servo unit 150 receives information necessary for the servo control from the RF AMP 130 and the system controller 160, and stably performs the servo function. The AV codec 110 decodes the compressed A/V data supplied from the DSP 120 to output an A/V signal. The system controller 160 controls the overall system for recording and reproducing the information data on and from the optical information storage medium mounted on the turntable of the pickup 140. The system controller 160 reads the writing speed information and records data on the optical information storage medium at an optimal speed determined based on the writing speed information.
  • [0065]
    In addition, according to the optical information storage medium and the method of recording thereon of the present invention, it is possible to reduce the number of discs that are discarded as being defective and to prevent damage to user data due to recoding the data on the discs at an unsuitable recording speed.
  • [0066]
    While this invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
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Classifications
U.S. Classification369/47.39, G9B/19.046, G9B/7.005, G9B/19.017, 369/275.3, G9B/7.033, G9B/7.01
International ClassificationG11B20/12, G11B19/28, G11B7/007, G11B19/12, G11B11/00, G11B7/0045, G11B7/0037
Cooperative ClassificationG11B19/12, G11B7/0045, G11B19/28, G11B19/122, G11B7/00736, G11B7/0037, G11B19/26
European ClassificationG11B19/26, G11B19/12C, G11B7/0037, G11B19/12, G11B19/28, G11B7/0045, G11B7/007R
Legal Events
DateCodeEventDescription
Jul 10, 2003ASAssignment
Owner name: SAMSUNG ELECTRONICS CO., LTD., KOREA, REPUBLIC OF
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LEE, KYUNG-GEUN;KO, JUNG-WAN;PARK, IN-SIK;REEL/FRAME:014251/0589
Effective date: 20030506