Temporally threaded CMI watermark
View Patent ↗Disclosed is 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 computer readable medium containing at least one sequence of executable instructions, wherein execution of said “executable instructions” by one or more processors causes said “one or more processors” to apply a temporally threaded copyright management information watermark to a digital work by:
a) dividing said “digital work” into a multitude of temporally separated portions;
b) dividing copyright management information into a multitude of copyright management information sub-parts; and
c) spreading said “copyright management information” across said “digital work” by at least twice:
i) applying at least one of said “multitude of copyright management information subparts” to at least one of a multitude of fragile sub-watermarks;
ii) embedding said “at least one of a multitude of fragile sub-watermarks” in at least one of said “multitude of temporally separated portions.”
2. A computer readable medium according to claim 1 , wherein said digital work is one of the following:
a) digital video;
b) digital audio;
c) digital information; and
d) digital text.
3. A computer readable medium according to claim 1 , wherein said “multitude of temporally separated portions” spans the complete said “digital work.”
4. A computer readable medium according to claim 1 , wherein said “copyright management information” includes at least one of the following:
a) a title identifying said “digital work;”
b) other information identifying said “digital work;”
c) information set forth on a notice of copyright;
d) a name of an author of said “digital work;”
e) other identifying information about an author of said “digital work;”
f) the name of a copyright owner of said “digital work;”
g) other identifying information about a copyright owner of said “digital work;”
h) the name of a performer whose performance is fixed in said “digital work;”
i) other identifying information about, a performer whose performance is fixed in said “digital work;”
j) the name of a writer, performer, or director who is credited in the work;
k) other identifying information about, a writer, performer, or director who is credited in said “digital work;”
l) terms and conditions for use of said “digital work;”
m) identifying numbers referencing other copyright management information;
n) symbols referencing other copyright management information;
o) numbers referencing other copyright management information; and
p) links referencing other copyright management information.
5. A computer readable medium according to claim 1 , wherein at least one of said “multitude of temporally separated portions” includes at least one of the following:
a) a frame;
b) an MPEG I frame;
c) an MPEG P frame;
d) an MPEG B frame;
e) a multitude of frames;
f) a sub-frame;
g) a distribution unit; and
h) an audio segment.
6. A computer readable medium according to claim 1 , wherein said “digital work” also has at least one forensic watermark.