Patent ID: 8578503
Filing Date: 2013-11-05
Classification: G06F

Abstract:
1. A method of managing a resource of a portable storage device which is connected to a host device, the method comprising: changing a status of a first Digital Rights Management (DRM) application into a ready status from an idle status by the portable storage device if task processing of the first DRM application is required by the host device; and changing the status of the first DRM application into a pending status and a status of a second DRM application into the ready status from the idle status by the portable storage device if task processing of the second DRM application is required by the host device, wherein the changing of the status the first DRM application into the ready status comprises: allotting a first memory space in a main memory for task processing of the first DRM application; establishing a first security session for the first DRM application; and transmitting and receiving messages to and from the host device through the first security session, and performing a DRM task of the first DRM application using the first memory space and in accordance with the messages transmitted and received through the first security session.