COMPUTING UNIT ABNORMALITY DETERMINING APPARATUS AND METHOD
First Claim
1. A computing unit abnormality determining apparatus which determines whether there is an abnormality in a computing unit, comprising:
- a comparison operation abnormality determining part configured to perform a comparison operation using the computing unit to determine whether there is an abnormality in the comparison operation; and
an arithmetic/logical operation abnormality determining part configured to perform an arithmetic/logical operation of a predetermined operational expression using the computing unit, the predetermined operational expression including at least one of an arithmetic operation and a logical operation, and compare an operational result obtained by the arithmetic/logical operation with a corresponding stored value of a correct value to determine whether there is an abnormality in the arithmetic/logical operation.
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Abstract
According to the present invention, a computing unit abnormality determining apparatus is disclosed which determines whether there is an abnormality in a computing unit, comprising a comparison operation abnormality determining part configured to perform a comparison operation using the computing unit to determine whether there is an abnormality in the comparison operation; and an arithmetic/logical operation abnormality determining part configured to perform an arithmetic/logical operation of a predetermined operational expression using the computing unit, the predetermined operational expression including at least one of an arithmetic operation and a logical operation, and compare an operational result obtained by the arithmetic/logical operation with a corresponding stored value of a correct value to determine whether there is an abnormality in the arithmetic/logical operation.
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Citations
8 Claims
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1. A computing unit abnormality determining apparatus which determines whether there is an abnormality in a computing unit, comprising:
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a comparison operation abnormality determining part configured to perform a comparison operation using the computing unit to determine whether there is an abnormality in the comparison operation; and an arithmetic/logical operation abnormality determining part configured to perform an arithmetic/logical operation of a predetermined operational expression using the computing unit, the predetermined operational expression including at least one of an arithmetic operation and a logical operation, and compare an operational result obtained by the arithmetic/logical operation with a corresponding stored value of a correct value to determine whether there is an abnormality in the arithmetic/logical operation. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A computing unit abnormality determining method of determining whether there is an abnormality in a computing unit, comprising:
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performing a comparison operation using the computing unit to determine whether there is an abnormality in the comparison operation; and performing an arithmetic/logical operation of a predetermined operational expression using the computing unit, the predetermined operational expression including at least one of an arithmetic operation and a logical operation, and comparing an operational result obtained by the arithmetic/logical operation with a corresponding stored value of a correct value to determine whether there is an abnormality in the arithmetic/logical operation.
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Specification