Patent ID: 7979913

Claim:
A method of forming a domain adopting a digital rights management (DRM) based on a predetermined protocol, the method comprising: (a) informing a control point which manages the formation of the domain that a device is connected to a network including the domain; (b) the informed control point obtaining DRM information of the device from the device; and (c) forming the domain based on the obtained DRM information of the device, wherein the DRM information includes a device mode which is a value determining whether the device operates as a certain role, including one of a slave device role, a guest device role, and a master device role, in the domain adopting the DRM, wherein, in operation (c), the domain is formed based on the device mode, wherein the domain includes at least a master device, a slave device, and the separate control point, and wherein the master device receives authentication information of at least one slave device and sends manager authentication information to the control point.