System for controlling the distribution and use of rendered digital works through watermarking
First Claim
1. A system for controlling the distribution and use of digital works comprising:
- means for creating usage rights, each instance of a usage right representing a specific instance of how a digital work may be used or distributed;
means for attaching a created set of usage rights to a digital work including a rendering right, said rendering right for permitting said digital work to be rendered, said rendering right further specifying watermark information to be embedded into a rendering of said digital work, a communication medium for coupling repositories to enable exchange of repository transaction messages, a general repository for storing and securely exchanging digital works with attached usage rights;
a rendering system comprising a rendering repository for receiving a digital work to be rendered from said general repository and a rendering device for rendering digital works, said rendering repository further comprising;
means for gathering watermark information specified in a print right associated with said digital work to be rendered; and
means for encoding said watermark information for embedding in said rendered digital work.
2 Assignments
0 Petitions
Accused Products
Abstract
A trusted rendering system for use in a system for controlling the distribution and use of digital works. A trusted rendering system facilitates the protection of rendered digital works which have been rendered on a system which controls the distribution and use of digital works through the use of dynamically generated watermark information that is embedded in the rendered output. The watermark data typically provides information relating to the owner of the digital work, the rights associated with the rendered copy of the digital work and when and where the digital work was rendered. This information will typically aid in deterring or preventing unauthorized copying of the rendered work to be made. The system for controlling distribution and use of digital works provides for attaching persistent usage rights to a digital work. Digital works are transferred between repositories which are used to request and grant access to digital works. Such repositories are also coupled to credit servers which provide for payment of any fees incurred as a result of accessing a digital work.
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Citations
22 Claims
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1. A system for controlling the distribution and use of digital works comprising:
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means for creating usage rights, each instance of a usage right representing a specific instance of how a digital work may be used or distributed;
means for attaching a created set of usage rights to a digital work including a rendering right, said rendering right for permitting said digital work to be rendered, said rendering right further specifying watermark information to be embedded into a rendering of said digital work, a communication medium for coupling repositories to enable exchange of repository transaction messages, a general repository for storing and securely exchanging digital works with attached usage rights;
a rendering system comprising a rendering repository for receiving a digital work to be rendered from said general repository and a rendering device for rendering digital works, said rendering repository further comprising;
means for gathering watermark information specified in a print right associated with said digital work to be rendered; and
means for encoding said watermark information for embedding in said rendered digital work. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. In a system for controlling the distribution and use of digital works, a method for providing a watermark on a rendered digital work comprising the steps of:
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a) a digital work creator assigning a rendering right to said digital work and storing in a distribution repository, said rendering right specifying watermark information indicating information identifying a rendering event;
b) a user obtaining an encrypted version of said digital work from said distribution repository and storing in a user repository;
c) said user requesting that said digital work be rendered;
d) said user repository determining if said digital work has the appropriate rendering right;
e) if said digital work has the appropriate rendering right, said user repository communicating with a rendering repository to establish a trusted session;
f) said user repository transferring said digital work to said rendering repository;
g) said rendering repository gathering watermark information specified in said rendering right;
h) said rendering repository encoding data for said watermark information;
i) said rendering repository decrypting said digital work and embedding said watermark information; and
j) said rendering repository transmitting said digital work with embedded watermark information to a rendering device for rendering. - View Dependent Claims (14, 15, 16, 17, 18)
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19. In a system for controlling the distribution and use of digital works, a method for providing a watermark on a rendered digital work comprising the steps of:
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a) a digital work creator assigning a rendering right to said digital work and storing in a distribution repository, said rendering right specifying criteria for a rendering system that must be satisfied before the digital work can be rendered;
watermark information indicating information identifying a rendering event;
b) a user requesting a rendered version of said digital work be rendered on a user rendering system having a rendering repository;
c) said distribution repository determining if said user rendering system mess the specified criteria in said rendering right;
d) if said rendering system satisfies said specified criteria, said distribution repository encrypting said digital work and sending to said rendering repository;
e) said rendering repository gathering watermark information specified in said rendering right;
f) said rendering repository encoding data for said watermark information;
g) said rendering repository decrypting said digital work and embedding said watermark information; and
h) said rendering repository transmitting said digital work with embedded watermark information to a rendering device for rendering. - View Dependent Claims (20, 21, 22)
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Specification