Redundancy-based electronic device having certified and non-certified channels
AssigneeSiemens Aktiengesellschaft
InventorsHerbert Barthel, Hartmut Von Krosigk
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Abstract
An at least dual-channel homogeneous-redundancy-based electronic device, preferably a dual-channel homogeneous-redundancy-based central processing unit of a stored-program control, that has at least one certified channel and at least one non-certified channel. The at least one, and certified channel is a channel that is sufficiently free of systematic errors. Components that have not been proven sufficiently free of systematic errors can be used in the at least one non-certified channel.
Claims8
An at least dual-channel homogeneous-redundancy-based electronic device, comprising:
- at least one certified channel;
- and
- at least one non-certified channel sufficiently free of systematic errors, a queriable signal provided for each of the at least one certified channel and the at least one non-certified channel, one of a first flag and a second flag being detectable when the signal is queried, the first flag denoting a certified channel, the second flag denoting a non-certified channel, the electronic device operating only if the first flag is detected at least once.
A method for operating an at least dual-channel homogeneous-redundancy-based electronic device, comprising the steps of:
- querying a signal corresponding to each of at least one certified channel and at least one non-certified channel, the at least one certified channel being sufficiently free of systematic errors;
- detecting one of a first flag and a second flag via the signal, the first flag denoting a certified channel, the second flag denoting a non-certified channel;
- and
- starting the electronic device only after detecting the first flag at least once.
Dependencies are inferred from the claim text.