Patent ID: 8843777

Claim:
A system comprising: first and second busses; a plurality of modules hierarchically, and sequentially, interconnected with the first and second busses in a dual bus chain, each module having first and second bus input terminals and first and second bus output terminals, the modules connected with the output terminals of modules to the beginning of the chain connected to the input terminals of a next module further along in the chain, each of the modules also including circuits to generate a command determined by an operation carried out by the module to one of the module bus output terminals, each of the modules also configured to utilize a superior command further forward in a chain to be overwritten by an inferior command issued at the same time to selectively switch the input received from the first bus input to the second bus output or the second bus input to the first bus output to bypass selected modules further forward in the chain so that their commands are not visible for following modules, each module having a local output; and a signal output module connected to a selected bus to produce an updated temporal signal.