Parental blocking system in a DVD integrated entertainment system

• US 6,118,744 A
• Filed: 09/30/1997
• Issued: 09/12/2000
• Est. Priority Date: 09/30/1997
• Status: Expired due to Term

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Compaq Computer Corporation (HP Inc.)
• Inventors: Sturgeon, Derrill L., Howard, Christopher A.
• Primary Examiner(s): Tran, Thang V.
• Application Number:
  US08/940,654
• Time in Patent Office: 1,078 Days
• Field of Search: 369/54, 369/58, 369/32, 369/84, 369/47, 369/59, 360/60, 380/3, 380/4, 380/5, 380/23, 380/25
• US Class Current: 369/47.23
• 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 20/00137 involving measures which result in a restriction to contents recorded on or reproduced from a record carrier to authorised users
• CPC Class Codes: G11B 20/00159 Parental control systems
• CPC Class Codes: G11B 20/00695 said measures preventing that data are read from the recording medium
• CPC Class Codes: G11B 2220/2562 DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
• CPC Class Codes: G11B 23/284 on the record carrier
• CPC Class Codes: G11B 27/105 of operating discs

Abstract

A purchaser of DVD unit establishes a list of users who may access the DVD unit, and corresponding restrictions that apply to each user. When a user attempts to play a DVD disc, the unit examines the DVD disc for parental management information. If the DVD disc does not contain the parental management information, then the unit will only permit access if the user has no content restrictions. If the DVD disc does contain the parental management information, then the unit will compare it to the restrictions applicable to the user. Where the parental management information indicates that the material exceeds the restrictions applicable to the user, the unit will not play the DVD disc.

Claims

1. A method for selectively permitting a user to play a DVD disc received at a DVD player, the method comprising the steps of:

ascertaining whether the DVD disc lacks parental management information;

establishing an identity of the user; and

selectively permitting access to the information stored on the DVD disc based on the established identity of the user, if the DVD disc is ascertained to lack the parental management information.

2. The method of claim 1, wherein the parental management information comprises a movie rating.

3. The method of claim 1, wherein said step of selectively permitting comprises the step of:

determining whether the established identity of the user corresponds to one or more unrestricted users having an unrestricted access level.

4. The method of claim 3, wherein the step of selectively permitting further comprises the steps of:

permitting access to the information stored on the DVD disc if the established identity of the user is determined to correspond to at least one of the one or more unrestricted users; and

denying access to the information stored on the DVD disc if the established identity of the user is determined not to correspond to the at least one of the one or more unrestricted users.

5. The method of claim 3, wherein the step of determining comprises the step of:

searching restriction information associated with users of the DVD player to determine whether the established identity of the user is associated with one or more access restrictions.

6. The method of claim 1, further comprising the steps of:

determining whether the parental management information violates an access restriction associated with the established identify of the user, if the DVD disc is ascertained to contain parental management information;

permitting access to the information stored on the DVD disc if the parental management information is determined not to violate the access restriction associated with the established identity of the user; and

denying access to the information stored on the DVD disc if the parental management information is determined to violate the access restriction associated with the established identity of the user.

7. A method for selectively permitting access to information stored on a DVD disc received at a DVD player, the method comprising the steps of:

ascertaining whether the DVD disc lacks parental management information; and

selectively permitting access to the information stored on the DVD disc in response to user input of a first code, if the DVD disc is ascertained to lack the parental management information.

8. The method of claim 7, wherein the parental management information comprises a movie rating.

9. The method of claim 7, wherein the step of selectively permitting comprises the steps of:

determining whether the first code enables unrestricted access to information accessible on the DVD player;

permitting access to the information stored on the DVD disc if the first code enables the unrestricted access; and

denying access to the information stored on the DVD disc if the first code does not enable the unrestricted access.

10. The method of claim 7, further comprising the step of:

selectively permitting access to information stored on the DVD disc in response to user input of a second code, if the DVD disc is ascertained to include the parental management information.

11. The method of claim 10, wherein the step of selectively permitting access to the information stored on the DVD disc in response to the user input of the second code comprises the steps of:

determining whether the parental management information violates an access restriction associated with the second code;

permitting access to the information stored on the DVD disc if the parental management information does not violate the access restriction associated with the second code; and

denying access to the information stored on the DVD disc if the parental management information violates the access restriction associated with the second code.

12. The method of claim 10, wherein the first code and the second code are the same.

13. A method for automatically permitting access to information stored on a DVD disc, the method comprising the steps of:

storing restriction information associated with users of the DVD player;

retrieving parental management information stored on the DVD disk; and

automatically permitting access to the information stored on the DVD disc if the parental management information does not violate the stored restriction information associated with each of the users of the DVD player.

14. The method of claim 13, wherein the parental management information comprises a movie rating.

15. The method of claim 13, further comprising the step of:

requesting user input of a code for enabling access to the information stored on the DVD disc if the parental management information violates the stored restriction information associated with at least one of the users of the DVD player.

16. An apparatus for selectively permitting a user to access information stored on a DVD disc received at a DVD player, the apparatus comprising:

a processor for controlling functionalities of the DVD player; and

a memory unit coupled to the processor for storing access restrictions associated with users of the DVD player, the memory unit further for storing instructions which when executed by the processor cause the processor to;

ascertain whether the DVD disc lacks parental management information;

establish an identity of the user; and

selectively permit access to the information stored on the DVD disc based on the established identity of the user, if the DVD disc is ascertained to lack the parental management information.

17. The apparatus of claim 16, wherein the memory unit further includes instructions which when executed by the processor cause the processor to:

determine whether the established identity of the user corresponds to one or more unrestricted users having an unrestricted access level.

18. The apparatus of claim 17, wherein the memory unit further includes instructions which when executed by the processor cause the processor to:

permit access to the information stored on the DVD disc if the established identity of the user is determined to correspond to at least one of the one or more unrestricted users; and

deny access to the information stored on the DVD disc if the established identity of the user is determined not to correspond to the at least one of the one or more unrestricted users.

19. An apparatus for automatically permitting access to information stored on a DVD disc, the apparatus comprising:

circuitry for performing functionalities of the DVD player;

a processor for controlling the circuitry; and

a memory unit coupled to the processor for storing restriction information associated with users of the DVD player, the memory unit further for storing instructions which when executed by the processor cause the processor to;

retrieve parental management information stored on the DVD disk; and

automatically permit access to the information stored on the DVD disc if the parental management information does not violate the stored restriction information associated with each of the users of the DVD player.

20. The apparatus of claim 19, wherein the memory unit further includes instructions which when executed by the processor cause the processor to:

request user input of a code for enabling access to the information stored on the DVD disc if the parental management information violates the stored restriction information associated with at least one of the users of the DVD player.

21. An apparatus for selectively permitting a user to play a DVD disc received at a DVD player, the apparatus comprising:

an identifier for establishing an identity of the user;

a reader for determining whether the DVD disc contains parental management information; and

access circuitry coupled to the reader and the identifier for selectively permitting access to information stored on the DVD disc based on the established identity of the user, if the DVD disc does not include the parental management information.

22. The apparatus of claim 21 further comprising:

a memory unit for storing access restrictions associated with a plurality of users of the DVD player;

a comparator, coupled to the reader, the identifier and the memory unit, for determining whether the parental management information violates one or more of the access restrictions associated with the established identity of the user.