Sound synchronisation for cine camera - has sound head controlled by film length passed through gate to permit single frame exposures

摘要

The sound/cine cassette has two separate drives for the gate and the sound head. The gate drives the film intermittently while the sound head has a controlled length loop to generate a constant film speed. The amount of film passed by the gate determines the action of the sound head for a simple synchronisation control. The system enables single shot exposures to be taken, with controlled amounts of film and without affecting the setting of the sound head, i.e. single shot exposures can be mixed with normal scenes.