| 摘要 |
PURPOSE:To securely prevent fatal failure caused by an abnormal correction value from occurring by previously setting a correction value for correcting an error quantity that an externally inputted measured value has and obtaining a correct measured value by correction arithmetic using the correction value. CONSTITUTION:For the measured value which is inputted from outside, the correction value for correcting the error quantity that the measured value has is set in advance and the correct measured value is obtained by the correction arithmetic using the corrected value. When the correction arithmetic is performed, the correction value read out of a storage means 12 is compared with a prepared specific data range and it is judged that only the value in the data range is the correction value, thereby performing the correction arithmetic. Consequently, the fatal failure of camera operation due to an abnormal correction value can securely be precluded. |
