Patent ID: 7743257
Filing Date: 2010-06-22
Classification: G06F

Abstract:
1. A system comprising: a main processor that is configured to effect a primary function of the system, a plurality of components that are configured to transfer data via a bus that is common to the main processor, an access controller that is configured to selectively inhibit data transfers between the main processor and one or more components of the plurality of components, based on defined access rights, and a secure block that is independent of the main processor and is configured to define the access rights; wherein, the access controller is configured to selectively inhibit the data transfers based on contents of an access control matrix whose contents define the access rights between the main processor and the one or more components, and the secure block is configured to exclusively control the contents of the access control matrix, and the access control matrix includes a definition of access rights to the access control matrix that exclusively limit a right to modify the contents of the access control matrix to the secure block.