Management system for digital broadcast rights and a method thereof

• US 20070189530A1
• Filed: 03/08/2006
• Published: 08/16/2007
• Est. Priority Date: 10/18/2005
• Status: Abandoned Application

• Current Assignee: National Taiwan University (Government of The Republic of China)
• Original Assignee: National Taiwan University (Government of The Republic of China)
• Inventors: Liang, Chia-Kai, Liu, Chia-Chu, Chen, Homer
• Application Number:
  US11/370,056
• Publication Number:
  US 20070189530A1
• Time in Patent Office: Days
• US Class Current: 380/200
• CPC Class Codes: H04N 2005/91335 the copy protection signal being a watermark
• CPC Class Codes: H04N 2005/91364 the video signal being scrambled
• CPC Class Codes: H04N 21/2541 Rights Management protecting software against unauthorised usage in a vending or licensing environment G06F21/10; security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08
• CPC Class Codes: H04N 21/4433 Implementing client middleware, e.g. Multimedia Home Platform [MHP]
• CPC Class Codes: H04N 21/4627 Rights management associated to the content security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08
• CPC Class Codes: H04N 21/4753 for user identification, e.g. by entering a PIN or password cryptographic authentication protocols H04L9/32; networks authentication protocols H04L63/08
• CPC Class Codes: H04N 21/835 Generation of protective data, e.g. certificates protecting software against unauthorised usage in a vending or licensing environment G06F21/10
• CPC Class Codes: H04N 21/8355 involving usage data, e.g. number of copies or viewings allowed
• CPC Class Codes: H04N 21/8358 involving watermark protecting executable software by watermarking G06F21/16; image watermarking in general G06T1/0021; watermarks inserted in still images for transmission purposes H04N1/32144; inserting watermarks during video coding H04N19/467
• CPC Class Codes: H04N 5/913 for scrambling ; for copy protection
• CPC Class Codes: H04N 9/8205 involving the multiplexing of an additional signal and the colour video signal

Abstract

A management system for digital broadcast rights and a method thereof, which applies to a digital video broadcasting system and utilizes the function of a multimedia home platform; when the multimedia data is intended to record or replay, the user'"'"'s data will be analyzed to determine whether the user is allowed to use the multimedia data; further, encryption and decryption processes are used to monitor and control the record and replay processes of the multimedia data and protect the digital broadcast rights of the multimedia data lest it be unrestrictedly used or duplicated as one pleases.

Claims

1. A management system for digital broadcast rights, comprising:

a digital video receiving unit, receiving at least one multimedia data, which comprises a rights expression data;

a user authentication unit, storing a user authentication data;

a digital monitoring unit, used to determine whether said user authentication data of said user authentication unit conforms to said rights expression data of said multimedia data, encrypting said multimedia data, creating an encryption key corresponding to said multimedia data, and providing said encryption key and said rights expression data for said user authentication unit; and

a storage unit, used to store said encrypted multimedia data.

2. The management system for digital broadcast rights of claim 1, wherein said storage unit is a hard disc or a Digital Video Disc.

3. The management system for digital broadcast rights of claim 1, wherein said digital monitoring unit can put a digital watermark on said multimedia data.

4. The management system for digital broadcast rights of claim 1, wherein said user authentication unit is a Smart Card.

5. The management system for digital broadcast rights of claim 1, wherein said digital video receiving unit is a Set Top Box of a digital television.

6. The management system for digital broadcast rights of claim 1, wherein said digital monitoring unit further comprises a record manager program and a display manager program.

7. The management system for digital broadcast rights of claim 6, wherein said record manager program confirms that said user authentication data of said user authentication unit conforms to said rights expression data of said multimedia data and then to encrypt said multimedia data and save the encrypted multimedia data into said storage unit.

8. The management system for digital broadcast rights of claim 6, wherein before replaying said encrypted multimedia data stored in said storage unit, said display manager program reads said user authentication data, said rights expression data of said multimedia data, and said encryption key, which are stored in said user authentication unit and determines whether said user authentication data conforms to said multimedia data, and if it is confirmed, said display manager program utilizes said encryption key to decrypt said encrypted multimedia data.

9. The management system for digital broadcast rights of claim 6, wherein said record manager program and said display manager program together with said multimedia data are simultaneously received by said digital video receiving unit in order to control the record and replay of said multimedia data.

10. A management method for digital broadcast rights, comprising the following steps:

receiving at least one multimedia data, which comprises a rights expression data, and reading a user authentication data from a user authentication unit;

determining whether said user authentication data conforms to said rights expression data of said multimedia data;

confirming that said user authentication data conforms to said rights expression data of said multimedia data, encrypting said multimedia data, creating an encryption key corresponding to said multimedia data, and providing said encryption key and said rights expression data for said user authentication unit; and

storing said encrypted multimedia data.

11. The management method for digital broadcast rights of claim 10, further comprising a step of putting a digital watermark on said multimedia data after said step of confirming that said user authentication data conforms to said rights expression data of said multimedia data.

12. The management method for digital broadcast rights of claim 10, wherein said user authentication unit is a Smart Card.

13. The management method for digital broadcast rights of claim 10, further comprising a step of reading said user authentication data, said rights expression data of said multimedia data, and said encryption key, which are stored in said user authentication unit after said step of storing said encrypted multimedia data.

14. The management method for digital broadcast rights of claim 13, further comprising a step of determining whether said user authentication data conforms to said multimedia data after said step of reading said user authentication data of said user authentication unit, said rights expression data of said multimedia data, and said encryption key, which are stored in said user authentication unit.

15. The management method for digital broadcast rights of claim 14, further comprising a step of utilizing said encryption key to decrypt said encrypted multimedia data after said step of determining whether said user authentication data conforms to said multimedia data.

16. The management method for digital broadcast rights of claim 15, further comprising a step of replaying the decrypted multimedia data after said step of utilizing said encryption key to decrypt said encrypted multimedia data.

17. The management method for digital broadcast rights of claim 15, wherein said step of receiving at least one multimedia data includes a step of receiving a display manager program in order to control the replay of said encrypted multimedia data.

18. The management method for digital broadcast rights of claim 17, wherein the step of before replaying said encrypted multimedia data stored in said storage unit, said display manager program reads said user authentication data, said rights expression data of said multimedia data, and said encryption key, which are stored in said user authentication unit and determines whether said user authentication data conforms to said multimedia data, and if it is confirmed, said display manager program utilizes said encryption key to decrypt said encrypted multimedia data.

19. The management method for digital broadcast rights of claim 10, wherein said step of receiving at least one multimedia data includes a step of receiving a record manager program in order to control the record of said multimedia data.

20. The management method for digital broadcast rights of claim 19, wherein said record manager program is used to execute said steps of determine whether said user authentication data conforms to said rights expression data of said multimedia data and encrypting said multimedia data, and is used to control said step of storing said encrypted multimedia data.