Koninklijke Philips Corporation N.v.

Koninklike Philips N.v.

Wouter Baks

Petrus Johannes Lenoir

Lukasz Szostek

Franciscus L A J Kamperman

Franciscus Lucas Antonius Johannes Kamperman

Petrus J Lenoir

A method of and system for digital rights management, in which access to a piece of content is granted in accordance with a license owned by a license owner to a client who is a member of a domain. This requires successfully verifying that a membership relation exists between the client and the domain as reflected in a first state variable, and that an association relation exists between the license owner and the domain as reflected in a second state variable. Both relationships are revoked by executing an online protocol between the parties in the relationship after which both remove the corresponding state variable. The domain controller propagates the state administration relating to the domain is propagated to the client so that the client can update its state administration.

Growing community of inventors

Best, Netherlands

Wouter Baks