| 摘要 |
A video camera including: an image pickup unit for generating an image signal; a level changing device for changing the level of the image signal; a negative-positive switching circuit for receiving the image signal outputted from the level changing device, the negative-positive switching circuit outputting the image signal outputted from the level changing device after inverting the level change direction of the image signal in a negative mode, and outputting the image signal outputted from the level changing device without inverting the level change direction of the image signal in a positive mode; and a control circuit for controlling the level changing device, the control circuit inverting the control direction between the negative and positive modes. The same control for both the negative image pickup and positive image pickup can be carried out by similar processes and operations.
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