Patent ID: 7733378

Claim:
An image pick-up device comprising: control means for generating a synchronizing signal; image signal pick-up means, connected to the control means, for picking up an image signal with a varied frame-rate; frame-addition processing means, connected to the image signal pick-up means and the control means, for generating a first image signal, from the variable frame-rate picked-up image signal, with a selected output frame rate based upon the synchronization signal; frame rate conversion means connected to the control means and an external device, the frame rate conversion means for converting a frame rate of a second image signal, supplied from the external device, to the output frame rate of the first image signal based upon the synchronization signal; and monitor image generation means, connected to the frame-addition processing means and the frame rate conversion means, for generating a monitor image signal for display by a monitor by using the first image signal and the second image signal.