Patent ID: 7764405

Claim:
An image processing device, comprising: an analog processing unit configured to perform line-clamping on an analog electric signal representing image data and to output the line-clamped analog electric signal as an analog image signal, wherein a clamp level voltage for the line-clamping and a reference voltage of the analog processing unit are the same; a fixed electric potential supplying unit configured to supply a fixed electric potential; a variable electric potential supplying unit configured to supply a variable electric potential; a first switch configured to start and stop the line-clamping; and a second switch configured to select the fixed electric potential or the variable electric potential as the clamp level voltage and the reference voltage; wherein the image processing device is configured to turn on the first switch at such a timing that an influence of a distorted response waveform, which distorted response waveform is generated when the variable electric potential is switched to the fixed electric potential by the second switch, is reduced.