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US 7,236,867 B2Granted
Short-circuit detecting circuit device
AssigneeDenso Corporation
InventorsHidehiko Kumazawa, Tatsuki Tanaka
Life of this patent
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Abstract
In a circuit device for analyzing analog signals from first and second circuits. The first and second circuits are designed to output analog signals which are opposite to each other in the positive and negative signs of phase. When short-circuit occurs, the output signals from the first and second circuits interfere with each other and thus these signals are offset by each other, so that malfunction caused by the short-circuit can be prevented, and also neither a device not a terminal is required to be added.
Claims6
A short-circuit detecting circuit device comprising:
- a first circuit and a second circuit for outputting analog signals;
- a signal processor for processing output signals of the first and second circuits;
- a first conductive wire for connecting the first circuit and the signal processor;
- a second conductive wire for connecting the second circuit and the signal processor;
- and
- a short-circuit monitoring unit for analyzing at least one of the analog signals of the first and second circuits which are input to the signal processor and monitoring the short-circuit between the first conductive wire and the second conductive wire, wherein the analog signals output from the first and second circuits are opposite in phase to each other.
3 more elements
Dependencies are inferred from the claim text.