Patent ID: 8271708
Filing Date: 2012-09-18
Classification: H04L

Abstract:
1. A method for single-channel bus coupling of a safety-critical process, the method comprising: processing a data set relevant for the safety-critical process by means of at least a first redundant processing channel and a second redundant processing channel according to identical laws for a safe protocol, wherein the first redundant processing channel forms a first redundant safe protocol and the second redundant processing channel forms a second redundant safe protocol; and assembling the redundant safe protocols into an additional identical common safe protocol, in that a common buffer register is accessed by each of the first and second processing channels, wherein, for each register location in the common buffer register, a write authorization is allocated only once, such that the additional identical common safe protocol is assembled proportionally by writing different portions of each of the first and second redundant safe protocol, wherein, before a transmission of the additional identical common safe protocol from the common buffer register, for verification of the additional identical common safe protocol, the contents of each register location of the common buffer register are read by each of the first and second redundant processing channel, characterized in that the additional identical common safe protocol is released only as a reaction to a release by each of the first and second redundant processing channel for the transfer or transmission from the buffer register for further processing.