Digital content management system and apparatus

• US 7,801,817 B2
• Filed: 07/20/2006
• Issued: 09/21/2010
• Est. Priority Date: 10/27/1995
• Status: Expired due to Fees

• Current Assignee: Piracy Protection LLC (LF Capital Partners, LLC)
• Original Assignee: Intarsia Software LLC (Intellectual Ventures LLC)
• Inventors: Saito, Makoto
• Primary Examiner(s): Agwumezie; Charles C
• Application Number:
  US11/491,400
• Publication Number:
  US 20070033143A1
• Time in Patent Office: 1,524 Days
• Field of Search: 705/51, 705/52, 705/59, 725/87, 725/101, 726/26, 345/741, 380/201
• US Class Current: 705/51
• CPC Class Codes: G06Q 10/10 Office automation; Time management

Abstract

There are provided a digital content management apparatus which further embodies a digital content management apparatus used with a user terminal, and a system which protects the secrets of a digital content. The system and the apparatus are a real time operating system using a micro-kernel, which is incorporated in the digital content management apparatus as an interruption process having high priority. When a user uses the digital content, whether there is an illegitimate usage or not, is watched by interrupting the usage process. In the case where illegitimate usage is carried out, a warning is given or the usage is stopped. The decryption/re-encryption functions of the digital content management apparatus having the decryption/re-encryption functions are not restricted to the inside of the user apparatus. By providing the decryption/re-encryption functions between the networks, the exchange of secret information between different networks is secured. By using this apparatus for converting a crypt algorithm, information exchange is made possible between systems which adopt different algorithms.

Claims

1. A method, comprising:

a computing device receiving, via a network, digital content and a management program;

the computing device executing a content use process of the management program;

during execution of the content use process, the computing device forcibly interrupting the content use process, wherein said interrupting permits a monitoring process of the management program to execute to monitor use of the digital content by the content use process, wherein the forcibly interrupting is based on an interruption priority of the monitoring process; and

in response to the monitoring process determining that the content use process is illegitimately using the digital content relative to usage rights associated with the digital content, the computing device stopping usage of the digital content by the content use process.

2. The method according to claim 1, wherein the digital content comprises decrypted digital copyrighted content.

3. The method according to claim 1, wherein said monitoring process is initiated by a remote device, and wherein the forcibly interrupting of the content use process occurs without the computing device requesting the interrupting.

4. The method according to claim 1, wherein the forcibly interrupting is performed by a distributed preemptive type multi-task operating system, wherein said monitoring process is incorporated into a micro-kernel of the preemptive type multi-task operating system of the computing device, and wherein the method further comprises the computing device receiving the micro-kernel from a remote device.

5. The method of claim 1, wherein the monitoring process is programmed to determine whether the digital content is being illegitimately edited.

6. The method of claim 1, wherein said monitoring process has a time slice that is approximately 1/100^th of a time slice of the content use process.

7. The method of claim 1, wherein the forcibly interrupting is caused by a preemptive type multi-task operating system that is running on the computing device and on a server coupled to the computing device via the network.

8. The method of claim 1, further comprising the computing device providing a warning that the digital content is being illegitimately used.

9. The method of claim 1, wherein the monitoring process checks to determine whether the digital content is being illegitimately edited, whether the digital content is being illegitimately stored, whether the digital content is being illegitimately copied, and whether the digital content is being illegitimately uploaded.

10. The method of claim 1, wherein performing of the monitoring process on the computing device is initiated by broadcast of a remote control signal.

11. The method of claim 1, wherein the forcibly interrupting occurs at regular intervals during time slices allotted to the monitoring process by a preemptive type multi-task operating system, wherein the time slices are allotted based on the interruption priority of the monitoring process.

12. An article comprising:

a storage medium having stored thereon instructions executable to cause the computing device to perform operations comprising;

receiving a set of content and a content management program from a remote computing device;

forcibly interrupting a content use process of the content management program executing on the computing device to permit a monitoring process of the content management program to execute to monitor use of the set of content by the content use process, wherein the forcibly interrupting is based on an interruption priority of the monitoring process;

the monitoring process checking for illegitimate usage of the set of content by the content use process, wherein the illegitimate usage is determined relative to usage rights associated with the set of content;

upon the monitoring process determining that illegitimate usage is occurring, taking one or more responsive actions.

13. The article according to claim 12, wherein the set of content comprises decrypted copyrighted content.

14. The article according to claim 12, wherein said monitoring process is performed without affecting the manner in which the content use process accesses the set of content.

15. The article according to claim 12, wherein the one or more responsive actions include one or more of the following actions:

causing further illegitimate usage of the set of content by the content use process to be stopped, warning of the illegitimate usage of the set of content.

16. The article according to claim 12, wherein the forcibly interrupting is performed by a distributed preemptive type multi-task operating system, wherein said monitoring process is performed by a micro-kernel of the preemptive type multi-task operating system, and wherein the method further comprises receiving the micro-kernel from the remote computing device.

17. The article according to claim 12, wherein said one or more responsive actions include stopping the receiving of content from the remote computing device.

18. The article according to claim 17, wherein the set of content is received in an encrypted form and subsequently decrypted by the computing device and wherein said one or more responsive actions include preventing decryption of the set of content.

19. The article according to claim 12, wherein the illegitimate usage is uploading of the set of content and wherein said one or more responsive actions include stopping the computing device from further uploading of the set of content.

20. A system, comprising:

a server programmed to provide a content management program and a set of content to a remote computing device, wherein the server is further programmed to cause a content use process of the content management program executing on the remote computing device to be forcibly interrupted by a watch process of the content management program in order to monitor usage of a set of content by the content use process, wherein the forcible interruption is based on an interruption priority of the watch process, and wherein the server is further programmed to prevent further usage of the set of content in response to the watch process detecting illegitimate usage of the set of content by the content use process.

21. The system according to claim 20, wherein the set of content comprises decrypted copyrighted content.

22. The system according to claim 20, wherein monitoring of usage of the set of content is performed without affecting regular usage of the set of content.

23. The system according to claim 20, wherein said forcibly interrupting is initiated via remote control of the computing device by the server.

24. The system according to claim 20, wherein the server is programmed to provide a warning that the set of content is being illegitimately used.

25. The system according to claim 20, wherein forcible interruption of the content use process is caused by a preemptive type multi-task operating system, wherein the preemptive type multi-task operating system is distributed operating system executing on the server and the remote computing device.

26. The system of claim 20, wherein the forcible interruption occurs at regular intervals during time slices allotted to the watch process by a preemptive type multi-task operating system, wherein the time slices are allotted based on the interruption priority of the watch process.

27. An article of manufacture comprising a computer-readable medium having program instructions stored thereon that are executable to cause the server to perform operations comprising:

providing a content management program and a set of content to a remote computing device;

forcibly interrupting a content use process of the content management program executing on the remote computing device to permit a watch process of the content management program to perform monitoring of usage of the set of content by the content use process, wherein the forcibly interrupting is based on an interruption priority of the watch process; and

upon the watch process detecting illegitimate usage of the set of content by the content use process, stopping further illegitimate usage of the set of content by the content use process.

28. The article of manufacture of claim 27, wherein the content management program is part of a preemptive type multi-task operating system.

29. The article of manufacture of claim 28, wherein the preemptive type multi task operating system includes a micro-kernel provided by the server.

30. The article of manufacture of claim 28, wherein the preemptive type multi-task operating system is a distributed operating system running on the remote computing device and on the server, wherein the server is coupled to the remote computing device via a network.

31. The article of manufacture of claim 27, wherein the forcibly interrupting occurs at regular intervals during time slices allotted to the watch process by a preemptive type multi-task operating system, wherein the time slices are allotted based on the interruption priority of the watch process.

32. An article of manufacture comprising a computer-readable medium having program instructions stored thereon that are executable to cause a computing device to perform operations comprising:

receiving a content management program and a set of content;

forcibly interrupting a content use process of the content management program that is executing on the computing device to permit a watch process of the content management program to execute, wherein the forcibly interrupting is based on an interruption priority of the watch process;

executing the watch process to monitor the content use process'"'"'s usage of the set of content, including checking for illegitimate copying of the set of content;

upon detecting usage of the set of content by the content use process that is illegitimate relative to usage rights associated with the set of content, stopping the illegitimate usage of the set of content by the content use process.

33. A method, comprising:

a user terminal receiving a content management program and a set of copyrighted content from a server, wherein a preemptive type multi task operating system is executing on the user terminal;

the user terminal executing a content use process of the content management program, wherein the content use process is using the set of copyrighted content; and

upon forcible interruption of the content use process by the preemptive type multi task operating system, the user terminal executing a watch process of the content management program to monitor usage of the set of copyrighted content by the content use process, wherein the watch program is executable to detect illegitimate copying, storing, transferring and uploading of the set of copyrighted content, and wherein the forcible interruption is based on an interruption priority of the watch process; and

wherein upon the watch process detecting illegitimate usage of the set of copyrighted content by the content use process, use of the set of copyrighted content by content use process is stopped.

34. A user terminal, comprising:

a communication interface configured to receive a content management program;

means for forcibly interrupting a content use process of the content management program that is executing on the user terminal, wherein the content use process is using a set of content having an associated set of usage rights;

means for using a watch process of the content management program to monitor whether the executing content use process is illegitimately using the set of content, wherein the forcibly interrupting is based on an interruption priority of the watch process; and

means for stopping use of the set of content by the content use process in response to the watch process determining that the content use process is illegitimately using the set of content.

35. A computer system, comprising:

one or more processors;

memory having stored thereon program instructions that are executable to cause the computer system to implement a preemptive type multi task operating system, the memory also having stored thereon program instructions that are executable to cause the computer system to perform;

receiving a content management program and a set of copyrighted content from a server computer system;

executing a content use process of the content management program that uses the set of copyrighted content; and

upon forcible interruption of the content use process by the preemptive type multi task operating system, executing a watch process of the content management program to monitor usage of the set of copyrighted content by the content use process, wherein the watch program is executable to detect illegitimate copying, storing, transferring and uploading of the set of copyrighted content, wherein the forcible interruption is based on an interruption priority of the watch process; and

upon the watch process detecting illegitimate usage of the set of copyrighted content by the content use process, stopping use of the set of copyrighted content by the content use process.