Method of and apparatus for creating image processing program, computer program for creating image processing program

• US 20040184612A1
• Filed: 01/29/2004
• Published: 09/23/2004
• Est. Priority Date: 03/10/2003
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Kohiyama, Kiyoshi, Komazaki, Hiroshi
• Granted Patent: US 7,471,806 B2
• Time in Patent Office: Days
• US Class Current: 380/217
• CPC Class Codes: G06T 1/0071 using multiple or alternating watermarks
• CPC Class Codes: G06T 2201/0064 for copy protection or copy management, e.g. CGMS, copy only once, one-time copy
• CPC Class Codes: H04N 19/467 characterised by the embedded information being invisible, e.g. watermarking
• CPC Class Codes: H04N 19/61 in combination with predictive coding
• CPC Class Codes: H04N 2005/91335 the copy protection signal being a watermark
• CPC Class Codes: H04N 21/2347 involving video stream encryption
• CPC Class Codes: H04N 21/4143 embedded in a Personal Computer [PC]
• CPC Class Codes: H04N 21/42684 Client identification by a unique number or address, e.g. serial number, MAC address, socket ID network arrangements, protocols or services for addressing or naming H04L61/00
• CPC Class Codes: H04N 21/4405 involving video stream decryption
• 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 5/9305 involving the mixing of the reproduced video signal with a non-recorded signal, e.g. a text signal
• CPC Class Codes: H04N 7/163 by receiver means only
• CPC Class Codes: H04N 7/1675 Providing digital key or authorisation information for generation or regeneration of the scrambling sequence pseudo-random number generators in general G06F7/58

Abstract

At every reproduction of a moving image, a tamper resistant module (TRM) randomly selects any one of plural electronic watermark inserting modules, and incorporates the module selected into an area randomly selected from among plural non-operation (NOP) areas in an MPEG expansion module. The module can be switched for each image in a series of the moving images. Since an algorithm for inserting the electronic watermark differs for each moving image or each image, elimination of the electronic watermark by means of analysis, particularly, complete elimination from all the images, is extremely difficult.

Claims

1. An apparatus for creating image processing program, comprising:

a program selecting unit that selects at least one watermarking program from among a plurality of watermarking programs for inserting electronic watermark data into moving image data that are encrypted, compressed, or both encrypted and compressed;

an area selecting unit that selects at least one area for inserting the selected grogram from among a plurality of areas in a processing program that performs decrypting, expanding, or both decrypting and expanding the moving image data; and

a program inserting unit that inserts the watermarking program selected into the area selected.

2. The apparatus according to claim 1, wherein

the program selecting unit selects the watermarking program at random, and

the area selecting unit selects the area at random.

3. The apparatus according to claim 1, wherein the electronic watermark data include information unique to an image processing apparatus that executes the processing program.

4. The apparatus according to claim 1, wherein the electronic watermark data include a unique number of a tamper resistant module composing an image processing apparatus that executes the processing program, and the unique number encrypted by a unique encryption key of the tamper resistant module.

5. The apparatus according to claim 1, further comprising:

a parameter determining unit that randomly determines a parameter necessary to operate the watermarking program selected.

6. The apparatus according to claim 1, further comprising:

a program rewriting unit that rewrites a jump destination specified by a jump instruction in the processing program from any one of the watermarking programs inserted by the program inserting unit into another watermarking program.

7. The apparatus according to claim 6, wherein the program rewriting unit rewrites the jump destination during an execution of the processing program.

8. A method of creating image processing program, comprising:

selecting at least one watermarking program from among a plurality of watermarking programs for inserting electronic watermark data into moving image data that are encrypted, compressed, or both encrypted and compressed;

selecting at least one area from among a plurality of areas in a processing program that performs decrypting, expanding, or both decrypting and expanding the moving image data; and

inserting the watermarking program selected into the area selected.

9. The method according to claim 8, wherein

the selecting at least one watermarking program includes selecting the watermarking program at random, and

the selecting at least one area includes selecting the area at random.

10. The method according to claim 8, wherein the electronic watermark data include information unique to an image processing apparatus that executes the processing program.

11. The method according to claim 8, wherein the electronic watermark data include a unique number of a tamper resistant module composing an image processing apparatus that executes the processing program, and the unique number encrypted by a unique encryption key of the tamper resistant module.

12. The method according to claim 8, further comprising:

determining randomly a parameter necessary to operate the watermarking program selected.

13. The method according to claim 8, further comprising:

rewriting a jump destination specified by a jump instruction in the processing program from any one of the watermarking programs inserted by the program inserting unit into another watermarking program.

14. The method according to claim 13, wherein the rewriting is performed during an execution of the processing program.

15. A computer program for creating image processing program, making a computer execute:

selecting at least one watermarking program from among a plurality of watermarking programs for inserting electronic watermark data into moving image data that are encrypted, compressed, or both encrypted and compressed;

selecting at least one area from among a plurality of areas in a processing program that performs decrypting, expanding, or both decrypting and expanding the moving image data; and

inserting the watermarking program selected into the area selected.

16. The computer program according to claim 15, wherein

the selecting at least one watermarking program includes selecting the watermarking program at random, and

the selecting at least one area includes selecting the area at random.

17. The computer program according to claim 15, wherein the electronic watermark data include information unique to an image processing apparatus that executes the processing program.

18. The computer program according to claim 15, wherein the electronic watermark data include a unique number of a tamper resistant module composing an image processing apparatus that executes the processing program, and the unique number encrypted by a unique encryption key of the tamper resistant module.

19. The computer program according to claim 15, further making the computer execute:

determining randomly a parameter necessary to operate the watermarking program selected.

20. The computer program according to claim 15, further making the computer execute:

rewriting a jump destination specified by a jump instruction in the processing program from any one of the watermarking programs inserted by the program inserting unit into another watermarking program.

21. The computer program according to claim 20, wherein the rewriting is performed during an execution of the processing program.