Patent ID: 8970724
Filing Date: 2015-03-03
Classification: G02F,H04N

Abstract:
1. A marker or comb generator for generating optical markers or optical combs for calibration during image recordation of an event: a reference signal generator configured to generate a pulse stream; a driver configured to receive and amplify the pulse stream to a magnitude for driving an optic signal generator; an optic signal generator configured to generate an optic reference signal representing the pulse stream; a bias modulator configured to generate a bias signal; a signal generator configured to generate a high frequency modulation signal; a Mach-Zehnder modulator configured to receive the optic reference signal, the bias signal, and the high frequency modulation signal to generate optical markers or combs at a higher frequency than the reference signal; and an image recording device configured to record an event to create a recorded image and superimpose the optical markers or optical combs on the recorded image to thereby establish timing calibration or temporal reference on the recorded image.