Method for generating a temporally threaded CMI watermark
Disclosed is a method for generating a temporally threaded copyright management information watermark where fragile watermarks containing CMI are spread throughout a digital work temporally. In one embodiment of this invention, the copyright management information is divided into a multitude of copyright management information subparts; the copyright management subparts are applied to fragile sub-watermarks; and fragile watermarks are applied to temporally separated portions of the digital work.
1. A method for applying a copyright management information watermark to a digital work comprising:
dividing, using a processor, said digital work into a multitude of temporally separated portions;
dividing copyright management information into a multitude of copyright management information sub-parts; and
spreading said copyright management information across said digital work by at least twice:
applying at least one of said multitude of copyright management information sub-parts to at least one of a multitude of sub-watermarks; and
embedding said at least one of a multitude of sub-watermarks in at least one of said multitude of temporally separated portions.
2. The method according to claim 1 , wherein said digital work is one of the following:
digital video;
digital audio;
digital information; or
digital text.
3. The method according to claim 1 , wherein said multitude of temporally separated portions span the entirety of said digital work.
4. The method according to claim 1 , wherein said multitude of temporally separated portions span a part, but not the entirety, of said digital work.
5. The method according to claim 1 , wherein said copyright management information includes at least one of the following:
a title identifying said digital work;
information identifying said digital work;
information set forth on a notice of copyright;
a name of an author of said digital work;
identifying information about an author of said digital work;
a name of a copyright owner of said digital work;
other identifying information about a copyright owner of said digital work;
a name of a performer whose performance is fixed in said digital work;
identifying information about a performer whose performance is fixed in said digital work;
a name of a writer, or director who is credited in said digital work;
identifying information about a writer or director who is credited in said digital work;
terms and conditions for use of said digital work;
identifying numbers referencing copyright management information;
symbols referencing copyright management information;
numbers referencing copyright management information; or
links referencing copyright management information.
6. The method according to claim 1 , wherein at least one of said multitude of temporally separated portions includes at least one of the following:
a frame;
an MPEG I frame;
an MPEG P frame;
an MPEG B frame;
a multitude of frames;
a sub-frame;
a distribution unit; or
an audio segment.
7. The method according to claim 1 , wherein at least one of said multitude of sub-watermarks contains a uniquely identifying symbol or code.
8. The method according to claim 1 , wherein at least one of said multitude of sub-watermarks was created using non-optimum motion vector technique.
9. The method according to claim 1 , wherein at least one of said multitude of sub-watermarks was created using a minor rate control variation technique.
10. The method according to claim 1 , wherein at least one of said multitude of sub-watermarks was created using a noise-tolerant watermark technique.
11. The method according to claim 1 , wherein at least one of said multitude of sub-watermarks was created using a watermarking technique that uses low-order bit variation in AC or DC coefficients.
12. The method according to claim 1 , wherein at least one of said multitude of sub-watermarks was created using a watermarking technique that uses low amplitude blurry symbols.
13. The method according to claim 1 , wherein said digital work also has at least one forensic watermark.
14. A non-transitory computer readable medium comprising: a digital work having a copyright management information watermark created using the method of claim 1 ;
wherein said digital work includes:
a plurality of substantial portions, each of said substantial portions having:
a beginning,
an end; and
a multitude of portions distributed between said beginning and said end; and
a multitude of sub-watermarks embedded in the substantial portions, wherein each of said sub-watermarks includes one of a multitude of copyright management information parts.
15. The non-transitory computer readable medium according to claim 14 , wherein said digital work is one of the following:
digital video;
digital audio;
digital information; or
digital text.
16. The non-transitory computer readable medium according to claim 14 , wherein said multitude of temporally separated portions span the entirety of said digital work.
17. The non-transitory computer readable medium according to claim 14 , wherein said copyright management information includes at least one of the following:
a title identifying said digital work;
information identifying said digital work;
information set forth on a notice of copyright;
a name of an author of said digital work;
identifying information about an author of said digital work;
a name of a copyright owner of said digital work;
identifying information about a copyright owner of said digital work;
a name of a performer whose performance is fixed in said digital work;
identifying information about a performer whose performance is fixed in said digital work;
a name of a writer, or director who is credited in the work;
identifying information about a writer, or director who is credited in said digital work;
terms and conditions for use of said digital work;
identifying numbers referencing copyright management information;
symbols referencing copyright management information;
numbers referencing copyright management information; or
links referencing copyright management information.
18. The non-transitory computer readable medium according to claim 14 , wherein at least one of said multitude of temporally separated portions includes at least one of the following:
a frame;
an MPEG I frame;
an MPEG P frame;
an MPEG B frame;
a multitude of frames;
a sub-frame;
a distribution unit; or
an audio segment.
19. The non-transitory computer readable medium according to claim 14 , wherein said digital work also has at least one forensic watermark.
20. A non-transitory computer readable medium having instructions stored thereon for applying a copyright management information watermark to a digital work, the instructions comprising:
instructions for dividing said digital work into a multitude of temporally separated portions;
instructions for dividing copyright management information into a multitude of copyright management information sub-parts; and
instructions for spreading said copyright management information across said digital work by at least twice:
applying at least one of said multitude of copyright management information sub-parts to at least one of a multitude of sub-watermarks; and
embedding said at least one of a multitude of sub-watermarks in at least one of said multitude of temporally separated portions.
21. The non-transitory computer readable medium according to claim 20 , wherein said digital work is one of the following:
digital video;
digital audio;
digital information; or
digital text.
22. The non-transitory computer readable medium according to claim 20 , wherein said copyright management information watermark includes copyright management information selected from at least one of the following:
a title that identifies said digital work;
information that identifies said digital work;
information set forth on a notice of copyright;
a name of an author of said digital work;
identification information about an author of said digital work;
a name of a copyright owner of said digital work;
identification information about a copyright owner of said digital work;
a name of a performer whose performance is fixed in said digital work;
identification information about a performer whose performance is fixed in said digital work;
a name of a writer or director who is credited in the work;
identification information about a writer or director who is credited in said digital work;
terms and conditions for use of said digital work;
identification numbers that reference copyright management information;
symbols that reference copyright management information;
numbers that reference copyright management information; or
links that reference copyright management information.