Patent ID: 6985185

Claim:
A method of producing a video recording with improved dynamic range comprising: providing a video camera comprising a video detector capable of converting an optical image into a sequence of video fields or frames, and an electronic shutter for adjusting the amount of light received by said detector from an optical image viewed by said camera; operating said camera to capture an optical image; commanding said electronic shutter to vary the amount of light received by said video detector from said captured optical image whereby to produce from said detector an output video signal constituting a sequence of video fields or frames representing the captured optical image, with said sequence comprising at least first and second fields or frames representing different exposure values of the captured image occurring repetitively in said sequence according to a predetermined repetition frequency; processing said output video signal so as to produce a modified video signal consisting of a continuous sequence of said first fields or frames or a continuous sequence of said second fields or frames; and selectively applying said modified video signal as an input signal to a video display apparatus whereby to cause said apparatus to display said captured optical image according to the first or second fields or frames contained in said modified video signal.