Optical recording medium having inaccessible restricted block(s), and systems incorporating same

• US 20040193949A1
• Filed: 02/23/2004
• Published: 09/30/2004
• Est. Priority Date: 04/06/2001
• Status: Active Grant

• Current Assignee: Hitachi Consumer Electronics Company Limited (Hitachi, Ltd.)
• Original Assignee: Akeimi Hirotsune, Harukazu Miyamoto, Yoshiko Nishi
• Inventors: Miyamoto, Harukazu, Nishi, Yoshiko, Hirotsune, Akeimi
• Granted Patent: US 7,102,988 B2
• Time in Patent Office: Days
• US Class Current: 714/6.12
• CPC Class Codes: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: G11B 20/1252 for discontinuous data, e.g. digital information signals, computer programme data
• CPC Class Codes: G11B 20/1883 Methods for assignment of alternate areas for defective areas
• CPC Class Codes: G11B 2020/10898 Overwriting or replacing recorded data
• CPC Class Codes: G11B 2020/1232 sector, i.e. the minimal addressable physical data unit
• CPC Class Codes: G11B 2020/1265 Control data, system data or management information, i.e. data used to access or process user data
• CPC Class Codes: G11B 2020/1285 Status of the record carrier, e.g. space bit maps, flags indicating a formatting status or a write permission
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• CPC Class Codes: G11B 2220/2575 DVD-RAMs
• CPC Class Codes: G11B 7/007 Arrangement of the information on the record carrier, e.g. form of tracks , actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track

Abstract

In a medium having a restriction on its function which has an extremely low overwrite cyclability as compared with a common one, information is arranged so as to allow restricted write and read operations in a commonly current write and read drive, i.e., the medium is subjected to specific formatting. It is possible to perform write and read operations with security. The specific format can be performed with parameters taking the special-purpose using conditions (i.e., overwrite cyclability) into consideration. Consequently, it becomes possible to provide a low-priced information recording medium.

Claims

1. An information recording medium, comprising:

at least two blocks of independently writeable and/or readable user recording blocks, and at least one block of the user recording blocks being an inaccessible restricted block;

ones of the recording blocks having physical address data arranged thereon, the physical address data being made up of a code indicative of an address number and an address error detection code for verifying the correctness of the address number,

wherein the code indicative of the address number is mismatched with the address error detection code for verifying the correctness of the address number in the restricted block.

2. The information recording medium according to claim 1, wherein the information recording medium is at least one of:

an optical recording medium, a CD (compact disk) optical recording medium, CD-ROM (read only memory) optical recording medium, a DVD (digital versatile disk) optical recording medium, a DVD-RAM (random access memory) optical recording medium, a DVD-ROM optical recording medium, a MO (magneto-optic) optical recording medium, a WORM (write once, read many) optical recording medium, a MO-WORM optical recording medium, and a CCW (continuous composite write) optical recording medium.

3. An information recording medium, comprising:

at least two blocks of independently writeable and/or readable user recording blocks, and at least one block of the user recording blocks being an inaccessible restricted block;

ones of the recording blocks having physical address data arranged thereon, the physical address data being made up of a code indicative of an address number and an address error detection code for verifying the correctness of the address number,

wherein the address number indicated by the physical address data is different from the address number of the restricted block in the restricted block.

4. The information recording medium according to claim 3, wherein the information recording medium is at least one of:

an optical recording medium, a CD (compact disk) optical recording medium, CD-ROM (read only memory) optical recording medium, a DVD (digital versatile disk) optical recording medium, a DVD-RAM (random access memory) optical recording medium, a DVD-ROM optical recording medium, a MO (magneto-optic) optical recording medium, a WORM (write once, read many) optical recording medium, a MO-WORM optical recording medium, and a CCW (continuous composite write) optical recording medium.

5. An information recording medium, comprising:

at least two blocks of independently writeable and/or readable user recording blocks, and at least one block of the user recording blocks being an inaccessible restricted block;

wherein the user recording block is an error correction code block including a plurality of user sectors,

wherein the user sectors individually have independent address numbers, and all the user recording blocks to which the user sectors having the smallest 257 numbers of the address numbers belong are at least inaccessible restricted blocks.

6. The information recording medium according to claim 5, wherein the user sectors individually have independent address numbers, and all the user recording blocks to which the user sectors having the smallest 513 numbers of the address numbers belong are at least inaccessible restricted blocks.

7. The information recording medium according to claim 5, wherein all the user recording blocks to which the user sectors having the largest 257 numbers of the address numbers belong are at least inaccessible restricted blocks.

8. The information recording medium according to claim 5, wherein the information recording medium is at least one of:

an optical recording medium, a CD (compact disk) optical recording medium, CD-ROM (read only memory) optical recording medium, a DVD (digital versatile disk) optical recording medium, a DVD-RAM (random access memory) optical recording medium, a DVD-ROM optical recording medium, a MO (magneto-optic) optical recording medium, a WORM (write once, read many) optical recording medium, a MO-WORM optical recording medium, and a CCW (continuous composite write) optical recording medium.

9. An information recording medium, comprising:

at least two blocks of independently writeable and/or readable user recording blocks, and at least one block of the user recording blocks being an inaccessible restricted block;

wherein a total number of the restricted blocks on the information recording medium is set to be larger than a total number of the recording blocks registrable in a defect management table.

10. The information recording medium according to claim 9, wherein the information recording medium is at least one of:

an optical recording medium, a CD (compact disk) optical recording medium, CD-ROM (read only memory) optical recording medium, a DVD (digital versatile disk) optical recording medium, a DVD-RAM (random access memory) optical recording medium, a DVD-ROM optical recording medium, a MO (magneto-optic) optical recording medium, a WORM (write once, read many) optical recording medium, a MO-WORM optical recording medium, and a CCW (continuous composite write) optical recording medium.

11. A system comprising:

an information recording medium drive having mechanical components to at least one of;

produce, read and write an information recording medium having at least one restricted block; and

at least one information recording medium including;

at least two blocks of independently writeable and/or readable user recording blocks, and at least one block of the user recording blocks being an inaccessible restricted block;

ones of the recording blocks having physical address data arranged thereon, the physical address data being made up of a code indicative of an address number and an address error detection code for verifying the correctness of the address number,

wherein the code indicative of the address number is mismatched with the address error detection code for verifying the correctness of the address number in the restricted block.

12. The system according to claim 11, wherein the information recording medium is at least one of:

an optical recording medium, a CD (compact disk) optical recording medium, CD-ROM (read only memory) optical recording medium, a DVD (digital versatile disk) optical recording medium, a DVD-RAM (random access memory) optical recording medium, a DVD-ROM optical recording medium, a MO (magneto-optic) optical recording medium, a WORM (write once, read many) optical recording medium, a MO-WORM optical recording medium, and a CCW (continuous composite write) optical recording medium.

13. A system comprising:

an information recording medium drive having mechanical components to at least one of;

produce, read and write an information recording medium having at least one restricted block; and

at least one information recording medium including;

at least two blocks of independently writeable and/or readable user recording blocks, and at least one block of the user recording blocks being an inaccessible restricted block;

ones of the recording blocks having physical address data arranged thereon, the physical address data being made up of a code indicative of an address number and an address error detection code for verifying the correctness of the address number,

wherein the address number indicated by the physical address data is different from the address number of the restricted block in the restricted block.

14. The system according to claim 13, wherein the information recording medium is at least one of:

an optical recording medium, a CD (compact disk) optical recording medium, CD-ROM (read only memory) optical recording medium, a DVD (digital versatile disk) optical recording medium, a DVD-RAM (random access memory) optical recording medium, a DVD-ROM optical recording medium, a MO (magneto-optic) optical recording medium, a WORM (write once, read many) optical recording medium, a MO-WORM optical recording medium, and a CCW (continuous composite write) optical recording medium.

15. A system comprising:

an information recording medium drive having mechanical components to at least one of;

produce, read and write an information recording medium having at least one restricted block; and

at least one information recording medium including;

at least two blocks of independently writeable and/or readable user recording blocks, and at least one block of the user recording blocks being an inaccessible restricted block;

wherein the user recording block is an error correction code block including a plurality of user sectors,

wherein the user sectors individually have independent address numbers, and all the user recording blocks to which the user sectors having the smallest 257 numbers of the address numbers belong are at least inaccessible restricted blocks.

16. The system according to claim 15, wherein the user sectors individually have independent address numbers, and all the user recording blocks to which the user sectors having the smallest 513 numbers of the address numbers belong are at least inaccessible restricted blocks.

17. The system according to claim 15, wherein all the user recording blocks to which the user sectors having the largest 257 numbers of the address numbers belong are at least inaccessible restricted blocks.

18. The system according to claim 15, wherein the information recording medium is at least one of:

an optical recording medium, a CD (compact disk) optical recording medium, CD-ROM (read only memory) optical recording medium, a DVD (digital versatile disk) optical recording medium, a DVD-RAM (random access memory) optical recording medium, a DVD-ROM optical recording medium, a MO (magneto-optic) optical recording medium, a WORM (write once, read many) optical recording medium, a MO-WORM optical recording medium, and a CCW (continuous composite write) optical recording medium.

19. A system comprising:

an information recording medium drive having mechanical components to at least one of;

produce, read and write an information recording medium having at least one restricted block; and

at least one information recording medium including;

at least two blocks of independently writeable and/or readable user recording blocks, and at least one block of the user recording blocks being an inaccessible restricted block;

wherein a total number of the restricted blocks on the information recording medium is set to be larger than a total number of the recording blocks registrable in a defect management table.

20. The system according to claim 19, wherein the information recording medium is at least one of:

an optical recording medium, a CD (compact disk) optical recording medium, CD-ROM (read only memory) optical recording medium, a DVD (digital versatile disk) optical recording medium, a DVD-RAM (random access memory) optical recording medium, a DVD-ROM optical recording medium, a MO (magneto-optic) optical recording medium, a WORM (write once, read many) optical recording medium, a MO-WORM optical recording medium, and a CCW (continuous composite write) optical recording medium.