| 摘要 |
PURPOSE:To correct a sensor output accurately even if correction data read out of a memory has an error by restoring the correction data which includes the error to correct correction data by an interpolating method when the error is detected. CONSTITUTION:A sensor SNS outputs an analog signal SSNS with phi1 and phi2 and this is performed by the controller of such a camera that an image signal which is A/D-converted by the A/D converter ADC in a central processor PRS in synchronism with a clock CK is stored in a specific address of a RAM. This is different from a known shading correcting method at the stage of reading from the memory. At respective stages, the (i)th data detected with an error detection code is read and error detection is performed; when correct data having no error is obtained, an inspection bit for error detection is removed and the order of the data is judged to select adjacent data in order to interpolate the data having an error, thereby reading the data. The inspection bit for the data for interpolation is removed and the interpolation is carried out.
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