Emc Corporation

Christopher A Hébert

Allen Hadden

A dynamic watermarking capability is implemented in an enterprise rights management (ERM) or similar system that comprises a central server to which end user client machines are connectable. The central server has a database in which watermark definitions created by authorized entities are centrally stored. An end user client machine is provided with a client component that typically includes wrapper code, and watermarking rendering code. The wrapper and rendering code are instantiated when a given calling application is started, or when the application initiates a given rendering function such as a print or display operation. When the calling application begins the rendering operation, the wrapper code intercepts a given rendering function call, connects to the central server and then retrieves a watermark definition. Alternatively, the watermark definition is retrieved when a document to be rendered is first accessed on the client machine. The watermark definition is then applied by the watermark rendering code, preferably using local rendering resources.

Growing community of inventors

Framingham, MA, United States of America

Christopher A Hébert