Synthetic Motion Generator.
Abstract:
The patent application incorporates in a synthetic sea wave generator the provision of sawtooth generators and tuneable oscillators to modulate sweep voltages of a television camera to generate realistic wave motion in a seascape scene. Also, a video-to-logic converter is used in conjunction with a sample and hold circuit to sample the camera video output voltage, determine the horizon position, and initiate the camera sweep modulation below the horizon. The sawtooth generator changes the amplitude of the camera sweep modulation voltage from a zero modulation voltage at the distant horizon to a maximum modulation at the bottom of the display screen. The basic principal of the device wherein a stretching and distortion type of motion is provided by appropriate modulation of camera sweep signal is also applicable to any application where such motion is desirable.