Patent ID: 7853819
Filing Date: 2010-12-14
Classification: G06F

Abstract:
1. A method for clock changeover in a system having at least two processing units, comprising: switching over, by a switchover device, between at least two operating modes of the system; and at least one of (a) activating and (b) deactivating a clock changeover in at least one processing unit in a switchover of the operating mode; wherein the at least two operating modes includes (a) a safety mode under which the at least two processing units process in synchronization with a clock offset a same program and a same data, and (b) a performance mode under which the at least two processing units process in clock edge synchronization at least one of a different program and a different data and wherein the switching over is based on whether to switch from the safety to the performance mode or from the performance to the safety mode.