DRIVE APPARATUS

• US 20100271914A1
• Filed: 12/16/2008
• Published: 10/28/2010
• Est. Priority Date: 12/18/2007
• Status: Abandoned Application

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Faessen, Loek, Talstra, Johan Cornelis
• Application Number:
  US12/747,530
• Publication Number:
  US 20100271914A1
• Time in Patent Office: Days
• US Class Current: 369/47.150
• 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 20/0021 involving encryption or decryption of contents recorded on or reproduced from a record carrier
• CPC Class Codes: G11B 20/0084 wherein the usage restriction can be expressed as a specific time or date

Abstract

The present invention relates to a drive apparatus (20) for accessing an optical record carrier (10) carrying a time-indicative information (T) and a second ROM mark (M₂), comprising: —an access unit (21, 25) for accessing said record carrier (10) for reading data from and/or writing data to said record carrier (10), —a time-information detector (D3) for checking for the presence of time-indicative information (T) and for checking, if time-indicative information (T) is present, whether said time-indicative information (T) indicates a time that lies before a predetermined reference time, —a second ROM mark detector (D₂) for checking, if said time-indicative information (T) indicates a time that lies on or after said predetermined reference time, for the presence of said second ROM mark (M₂), and—a controlunit (23, 24) for controlling said access unit (21, 25) such that the reading and/or writing of data is inhibited if said time-indicative information (T) indicates a time that lies on or after said predetermined reference time, but said second ROM mark (M₂) is not present on said record carrier.

Claims

1. Drive apparatus (20) for accessing an optical record carrier (10) carrying a time-indicative information (T) and a second ROM mark (M₂), comprising:

an access unit (21, 25) for accessing said record carrier (10) for reading data from and/or writing data to said record carrier (10),

a time-information detector (D₃) for checking for the presence of time-indicative information (T) and for checking, if time-indicative information (T) is present, whether said time-indicative information (T) indicates a time that lies before a predetermined reference time,

a second ROM mark detector (D₂) for checking, if said time-indicative information (T) indicates a time that lies on or after said predetermined reference time, for the presence of said second ROM mark (M₂), and

a control unit (23, 24) for controlling said access unit (21, 25) such that the reading and/or writing of data is inhibited if said time-indicative information (T) indicates a time that lies on or after said predetermined reference time, but said second ROM mark (M₂) is not present on said record carrier.

2. Drive apparatus as claimed in claim 1 for accessing an optical record carrier (10) further carrying a first ROM mark (M₁), further comprising a first ROM mark detector (D₁) for checking for the presence of said first ROM mark (M₁).

3. Drive apparatus as claimed in claim 2 for accessing an optical record carrier (10) further carrying a first ROM mark (M₁), wherein said time-information detector (D₃) is adapted for checking for the presence of time-indicative information (T) in said first ROM mark (M₁).

4. Drive apparatus as claimed in claim 1, wherein said control unit (23, 24) is adapted for controlling said access unit (21, 25) such that the reading and/or writing of data is allowed if either said time-indicative information (T) is not present or if said time-indicative information (T) indicates a time that lies before said predetermined reference time, or if said second ROM mark (M₂) is present on said record carrier (10).

5. Drive apparatus as claimed in claim 1, wherein said first ROM mark detector (D₁) is adapted for checking for the presence of time-indicative information (T), which directly specifies a particular point in time, in particular the day on which the record carrier (10) or a master (3) used for manufacturing said record carrier (10) has been manufactured.

6. Drive apparatus as claimed in claim 1, wherein said time-information detector (D₃) is adapted for checking for the presence of time-indicative information (T), which indirectly specifies a particular point in time, in particular a unique information allowing to determine whether a record carrier (10) or a master (3) used for manufacturing the record carrier (10) has been manufactured before a predetermined reference point in time.

7. Drive apparatus as claimed in claim 6, further comprising a unique information storage (27) for storing all pieces of unique information that have been recorded on record carriers manufactured before, wherein said time-information detector (D₃) is adapted for checking a unique information detected on said record carrier against the pieces of unique information stored in said unique information storage (27).

8. Drive apparatus as claimed in claim 6, wherein said time-information detector (D₃) is adapted for detecting for the presence of a unique random number representing said unique information, wherein said drive apparatus (20) further comprises a random number storage (27) and wherein said time-information detector (D₃) is adapted for checking a random number detected on said record carrier against the random numbers stored in said random number storage (27).

9. Drive apparatus as claimed in claim 1, wherein said time-information detector (D3) is adapted for checking for the presence of time-indicative information (T) in a certificate stored on the record carrier (10), in particular a content certificate, content revocation list or a Blu-ray Disc certificate.

10. Drive method for accessing an optical record carrier (10) carrying a time-indicative information (T) and a second ROM mark (M₂), comprising the steps of:

accessing said record carrier for reading data from and/or writing data to said record carrier (10),

checking for the presence of time-indicative information (T),

checking, if time-indicative information (T) is present, whether the said time-indicative information (T) indicates a time that lies before a predetermined reference time,

checking, if said time-indicative information (T) indicates a time that lies on or after said predetermined reference time, for the presence of said second ROM mark (M₂), and

controlling said access unit (21, 25), such that the reading and/or writing of data is inhibited if said time-indicative information (T) indicates a time that lies on or after said predetermined reference time, but said second ROM mark (M₂) is not present on said record carrier (10).

22. Computer program comprising program code means for carrying out the steps of the method as claimed in claim 10, if said computer program is carried out on a computer.

11. Record carrier carrying a time-indicative information (T) for use by a drive apparatus (20) for checking whether said time-indicative information (T) indicates a time that lies before a predetermined reference time, and carrying a second ROM mark (M₂), said time-indicative information (T) and said second ROM mark (M₂) being provided for use by a drive apparatus (20) for deciding whether or not allowing access to said record carrier (10).

12. Record carrier as claimed in claim 11, wherein said time-indicative information (T) includes a date at which said record carrier (10) or a master (3) used for manufacturing said record carrier (10) has been manufactured.

13. Record carrier as claimed in claim 11, wherein said time-indicative information (T) includes a unique information allowing to decide whether said record carrier (10) or a master (3) used for manufacturing said record carrier (10) has been manufactured before a predetermined reference time.

14. Record carrier as claimed in claim 12, wherein said unique information includes a unique random number or a unique information.

15. Record carrier as claimed in claim 11, wherein said time-indicative information (T) is stored in a certificate, in particular a content certificate, content revocation list or a Blu-ray Disc certificate.

16. Record carrier as claimed in claim 11, wherein said time-indicative information (T) and/or said second ROM mark (M₂) rely on a variation of a physical parameter, in particular on a variation of a wobble of a pregroove of said record carrier (20).

17. Record carrier as claimed in claim 11, storing pieces of unique information used as time-indicative information (T) on other record carriers (20) manufactured before the manufacturing of the present record carrier (20) or the master (3) used for manufacturing the present record carrier (10).

18. Record carrier as claimed in claim 11, further storing content material (C) in encrypted form, which is encrypted such that time-indicative information (T) present on said record carrier (20) is to be used for decrypting said content material (C).

19. Manufacturing apparatus (30, 40) for manufacturing a record carrier (2, 3), comprising:

a time-information inserter (R₃) for inserting a time-indicative information (T) on said record carrier (2) for use by a drive apparatus (20) for checking for the presence of time-indicative information (T) on said record carrier and for checking, if time-indicative information (T) is present, whether said time-indicative information (T) indicates a time that lies before a predetermined reference time, and

a second ROM mark inserter (R₂) for inserting a second ROM mark (M₂) for use by said drive apparatus (20) for checking, if said time-indicative information (T) indicates a time that lies on or after said predetermined reference time, for the presence of said second ROM mark (M₂).

20. Manufacturing apparatus as claimed in claim 19, wherein said manufacturing apparatus (30, 40) is adapted for manufacturing a master (3) which is used for manufacturing a number of record carriers (10) having the same first and second ROM marks (M₁, M₂), wherein said time-indicative information (T) included in said first ROM marks (M₁) indicates the date at which said master (3) has been manufactured.

21. Manufacturing method for manufacturing a record carrier (2, 3), comprising the steps of:

inserting a time-indicative information (T) on said record carrier (2) for use by a drive apparatus (20) for checking for the presence of time-indicative information (T) on said record carrier and for checking, if time-indicative information (T) is present, whether said time-indicative information (T) indicates a time that lies before a predetermined reference time, and

inserting a second ROM mark (M₂) for use by said drive apparatus for checking, if said time-indicative information (T) indicates a time that lies on or after said predetermined reference time, for the presence of said second ROM mark (M₂).